the irish naturalists' journal

THE IRISH NATURALISTS’ JOURNAL Registered Office, Ulster Museum, Belfast BT9 5AB. UK Company No. NI 027133

www.irishnaturalistsjournal.org

INJ Article Offprint This document is a copy of the following article published by Irish Naturalists’ Journal Ltd. It is provided for non-commercial research and educational use. Copyright of this article remains with INJ Ltd. Other uses, including reproduction and distribution, or selling or licensing copies, or posting to personal, institutional or third party websites are prohibited unless agreed in advance with INJ Ltd. This cover page must be included as an integral part of any copies of this document. Any enquiries should be addressed to [email protected]

This article should be cited as:

Arroyo, J., Keith, A.M., Schmidt, O. and Bolger, T. (2013) Mite abundance and richness in an Irish survey of soil biodiversity with comments on some newly recorded species. Irish Naturalists' Journal 33 (1): 19-27

Date of publication: 12 December 2013

Buckley, K.P. et al.

McDonald, R.A., Day, M.J. and BIRTLES, R.J. (2001) Histological evidence of disease in wild stoats (Mustela erminea) in England. Veterinary Record 149: 671-675. Nieberding, C., Libois, R., Douady, C.J., Morand, S. and Michaux, J.R. (2005) Phylogeography of a nematode (Heligomosomoides polygrus) in the western Palearctic region: persistence of northern cryptic populations during ice ages. Molecular Ecology 14: 765-779. Sleeman, D.P. (1987) The ecology of the Irish stoat. Unpublished PhD thesis. University College Cork. Sleeman, D.P. (1988) Skrjabingylus nasicola (Leuckhart) (Metastrongyloidae) as a parasite of the Irish stoat. Irish Naturalists’ Journal 22: 525-527. Sleeman, D.P. (1989) Ectoparasites of the Irish stoat. Medical and Veterinary Entomology 3: 213-218. Sleeman, D.P. (1992) Diet of Irish stoats. Irish Naturalists’ Journal 24: 151-153.

Sleeman, D.P. (1997) Records of lice (Phthiraptera) from stoats and badgers in Ireland. Bulletin of the Irish Biogeographical Society 20: 100-102. Sleeman, D.P. (2004) Reproduction in the Irish stoat. Irish Naturalists’ Journal 27: 344-348. Telfer, S., Bown, K.J., Sekules, R., Begon, M., Hayden, T. and Birtles, R. (2005) Disruption of a host-parasite system following the introduction of an exotic host species. Parasitology 130: 661-668. Tosh, D.G., Lusby, J., Montgomery, W.I. and O’Halloran, J. (2008) First record of greater white-toothed shrew Crocidura russula in Ireland Mammal Review 38: 321-326. Weber, J-M., and Mermod, C., (1985) Quantitative aspects of the life cycle of Skrjabingylus nasicola, a parasitic nematode of the frontal sinuses of mustelids. Zeitschrift für Parasitenkunde 71: 631-638.

Mite abundance and richness in an Irish survey of soil biodiversity with comments on some newly recorded species. *Julio Arroyo1, Aidan M. Keith2,3, Olaf Schmidt3 and Thomas Bolger1

UCD School of Biology and Environmental Science, University College Dublin, Belfield, Dublin 4 2 Centre for Ecology & Hydrology, Lancaster Environment Centre, Library Avenue, Bailrigg, Lancaster, LA14AP, U.K. 3 UCD School of Agriculture and Food Science, University College Dublin, Belfield, Dublin 4 1

The CréBeo project investigated biodiversity in Irish soils and provided data on the distribution, diversity and indicator value of a range of micro- and macro-organisms. In this paper we present data on the oribatid and gamasid (or mesostigmatid) mites (Arachnida, Acari) found in the survey. More than 100 taxa of mites were collected from 48 sites distributed across Ireland. The sites were selected to represent the major soil types and land uses (i.e. arable, pasture, forest, rough grazing and bogs). Mite abundance and species richness varied significantly between land uses but the pattern across land uses differed between oribatids and mesostigmatids. Oribatid abundance also differed between soil types and was positively correlated with soil organic matter. The genus Astegistes, as well as the species Limnozetes amnicus and Quadroppia pseudocircumita (all oribatids), are recorded for the first time in Ireland and some comments on their biology and distribution are provided. Keywords: gamasid, oribatid, soil mites, Ireland, land use, microarthropods, new records, soil type Introduction Oribatid mites (Oribatida, Acari) are important decomposers in almost all terrestrial habitats and they play an important role in ecosystem functions. They are found in a wide range of habitats, from arid coniferous forests over floodplain forests to salt marshes (Weigmann 1971, Mitchell 1979), and are the dominant component of the microarthropod fauna in most forest soils (Petersen and Luxton 1982). More than 9 000 oribatid mites have been described worldwide but the total species number is estimated to be up to 100 000 (Schatz 2002). Though gamasid mites or Mesostigmata (Gamasida, Acari) are usually less abundant than oribatids they are still abundant and diverse in soil and litter. The number of new mite species recorded in Ireland continues to increase (Arroyo and Bolger 2007, Arroyo et al. 2008, 2009 and 2010, Moraza et al. 2009). In addition, there is a need for systematic research to understand how land management may affect the abundance and richness of soil mite assemblages. *Corresponding author – [email protected]

18 Irish Naturalists’ Journal Vol. 33 Part 1

The CréBeo project investigated biodiversity in Irish soils and provided data on the distribution, diversity and indicator value of a range of microand macro-organisms (soil bacteria and fungi, mycorrhizal fungi, nematodes, micro-arthropods, earthworms, ants). This large-scale survey, with samples taken from a representative sub-set of the National Soil Database reference locations, afforded the opportunity to uncover patterns in the biodiversity of mirco-arthropod assemblages across a range of environments. In this paper we focus on oribatid and mesostigmatid mites, examining differences in the abundance and taxonomic richness between the major land uses and soil types of the Republic of Ireland, and testing correlations between these assemblage measures and soil characteristics. We also discuss a number of new records of this invertebrate subclass for Ireland and comment on their distribution and biology. Methods Site distribution and information The CréBeo survey sampled a total of 61 sites of Irish Naturalists’ Journal Vol. 33 Part 1 19

Arroyo, J. et al.

Mite abundance and richness in an Irish survey of soil biodiversity Figure 1. National Soil Database (NSD) sites sampled for microarthropods during the CréBeo soil biodiversity baseline survey.

and identified to species level. The systematic ordination used follows Balogh and Balogh (1992) and Subias (2004) for oribatid mites and Karg (1993) for gamasid mites. All voucher specimens are deposited in the Terrestrial Ecology Laboratory at the School of Biology and Environmental Science (University College Dublin). Data treatment and statistical analysis The effects of land use and soil type on the abundance and taxon richness of both oribatid and mesostigmatid mites were analysed using the non-parametric Kruskal-Wallis test due to the unbalanced nature of the replication. Spearman correlations between selected soil properties and microarthropod abundance and richness were calculated to examine potential environmental relationships across sites. Results and Discussion

Table 1. Number of sites in each land use × soil type combination sampled for microarthropods during the CréBeo soil biodiversity baseline survey. Soil type Acid brown earth

Land use Arable

Pasture

Forest

Rough grazing

Bog

3

2

-

-

-

Shallow brown earths 1

2

-

-

-

Gley

2

2

2

-

-

Brown podzolic

3

3

2

-

-

Grey-brown podzolic

3

7

2

-

-

Podzol

-

1

-

-

-

Peaty podzol

-

-

1

2

-

Peat

-

-

2

2

4

Lithosol

-

1

-

1

-

which 48 were sampled for microarthropods (Fig. 1). Sites were selected to represent the major soil types and land uses in Ireland. These included 12 arable, 18 pasture, 9 forest (5 coniferous plantations and 4 broadleaved forests), 5 rough grazing and 4 bog sites (Fig. 1, Table 1). The soil types represented were: acid brown earths, shallow brown earths, gleys, brown podzolics, grey-brown podzolics, podzols, peaty podzols, peats and lithosols (Table 1). Samples were taken between late summer and autumn in 2006. Soil properties were measured and data kindly made available by a related project (Kiely et al. 2009). 20 Irish Naturalists’ Journal Vol. 33 Part 1

Microathropod sampling, extraction and identification Microarthropods were sampled by taking four cores from each site, within 10 m of the GPS location of the National Soil Database sampling site. The soil cores were taken to 5 cm depth using a serrated coring device with a 5 cm diameter. These were placed in sample cups with a mesh screen bottom, and into plastic screw-cap jars for transport to the laboratory. The microarthropods were extracted using Tullgren funnels for 7 days into 70 per cent ethanol. All adult Oribatida and Gamasida were slidemounted in Hoyers medium (Krantz 1978)

A total of 108 mite taxa was recorded from 48 sites with 65 oribatid and 43 mesostigmatid taxa (Annex I). The most frequently recorded oribatid and mesostigmatid species were Heminothrus peltifer (Koch, 1839), and Uropoda minima Kramer, 1882, respectively. The most frequent oribatid, H. peltifer, is a primitive oribatid that is very common, especially in grasslands and forestry. The second most widely found oribatid species was Oppiella nova (Oudemans, 1902) and was present in almost all kinds of environments which is not surprising given its eurytopic ecological niche (Schatz 1983). Another oppid, Medioppia subpectinata (Oudemans, 1900) also occurred frequently. The most frequently found mesostigmatids were Uropoda minima and members of the family Ascidae which are both commonly found in most edaphic habitats in temperate regions. Within the oribatid taxa found in the survey, 19 (29.2%) occurred only in a single land use. Some of these species are well known habitat specialists e.g. Carabodes affinis Berlese, 1913, and C. labyrynthicus (Michael, 1879) that have only been found in forestry sites and Ceratozetes peritus Grandjean, 1951, which is also a typical forest inhabitant. Our records support these species’ preference for inhabiting arboreal environments (Bernini 1970, Rajski 1968). Other species may appear in a single land use because of the sampling intensity, e.g. Phauloppia lucorum (Koch, 1841), is usually recorded as inhabiting arboreal and forestry habitats but its dispersive behaviour means that it can often be found in a wide range of habitats (see Arroyo and Bolger 2007, 2010). For the gamasids, 16 out of 43 species (37.2 %) were collected in a single land use, as often occurs

with typical predatory species e.g. Pachylaelaps spp. and Macrocheles spp. Land use and management, particularly disturbance, are well known to influence mite abundance and diversity (e.g. Crossley et al. 1992, Behan-Pelletier 1999) and in this survey, land use had a significant effect on the total abundance of soil mites (H = 16.8, P = 0.002; data not shown). Furthermore, the significant effect of land use was evident in the abundance of both the oribatid mites (H = 15.1, P = 0.005; Fig. 2a) and mesostigmatid mites (H = 12.7, P = 0.013; Fig. 2b). Oribatid mites were most abundant in the coniferous plantation and rough grazing with 74.9 and 90.2 individuals per 100 cm3, respectively. Mesostigmatid mites were most abundant in broadleaved woodland with 12.7 individuals per 100 cm3, and were almost absent from peat sites (Fig. 2b). Mean mite taxon richness was also significantly different among land uses (H = 20.2, P < 0.001; data not shown). As with abundance, the oribatid species richness was greatest in the coniferous plantation and rough grazing land with 12 and 11 taxa per soil core, respectively (Land use: H = 20.0, P < 0.001; Fig. 3a). However, the total number of oribatid taxa recorded in each land use was similar in the coniferous plantation, rough grazing and pasture (Fig. 3b). Mean mesostigmatid taxa richness was lowest in the arable and peat, and greater in all other land uses (Land use: H = 12.6, P = 0.013; Fig. 3a). The total number of mesostigmatid taxa recorded was similar in all land uses except peat where only one species was recorded (Fig. 3b). There was no significant influence of soil type on total mite abundance (H = 14.7, P = 0.066), neither was there a significant influence of soil type on mesostigmatid abundance (H = 4.4, P = 0.820), taxon richness of oribatids (H = 4.8, P = 0.778) or mesostigmatids (H = 13.6, P = 0.09) (data not shown). However, oribatid abundance differed between soil types (H = 16.5, P = 0.036; data not shown). This was largely due to greater oribatid abundance in peat soils. Indeed, both oribatid mite abundance and taxon richness were significantly negatively correlated with bulk density and soil pH, and significantly positively correlated with organic matter (Table 2). Mesostigmatid abundance or taxon richness was not significantly correlated with any of the selected soil properties (Table 2). Several studies have found similar correlations between organic matter content and oribatid abundance (i.e. Black et al. 2003, Salmon et al. 2006, Gergócs and Hufnagel 2010) or species richness (Scheu and Schultz 1996).

Irish Naturalists’ Journal Vol. 33 Part 1 21

Arroyo, J. et al.

Mite abundance and richness in an Irish survey of soil biodiversity Figure 1. National Soil Database (NSD) sites sampled for microarthropods during the CréBeo soil biodiversity baseline survey.

and identified to species level. The systematic ordination used follows Balogh and Balogh (1992) and Subias (2004) for oribatid mites and Karg (1993) for gamasid mites. All voucher specimens are deposited in the Terrestrial Ecology Laboratory at the School of Biology and Environmental Science (University College Dublin). Data treatment and statistical analysis The effects of land use and soil type on the abundance and taxon richness of both oribatid and mesostigmatid mites were analysed using the non-parametric Kruskal-Wallis test due to the unbalanced nature of the replication. Spearman correlations between selected soil properties and microarthropod abundance and richness were calculated to examine potential environmental relationships across sites. Results and Discussion

Table 1. Number of sites in each land use × soil type combination sampled for microarthropods during the CréBeo soil biodiversity baseline survey. Soil type Acid brown earth

Land use Arable

Pasture

Forest

Rough grazing

Bog

3

2

-

-

-

Shallow brown earths 1

2

-

-

-

Gley

2

2

2

-

-

Brown podzolic

3

3

2

-

-

Grey-brown podzolic

3

7

2

-

-

Podzol

-

1

-

-

-

Peaty podzol

-

-

1

2

-

Peat

-

-

2

2

4

Lithosol

-

1

-

1

-

which 48 were sampled for microarthropods (Fig. 1). Sites were selected to represent the major soil types and land uses in Ireland. These included 12 arable, 18 pasture, 9 forest (5 coniferous plantations and 4 broadleaved forests), 5 rough grazing and 4 bog sites (Fig. 1, Table 1). The soil types represented were: acid brown earths, shallow brown earths, gleys, brown podzolics, grey-brown podzolics, podzols, peaty podzols, peats and lithosols (Table 1). Samples were taken between late summer and autumn in 2006. Soil properties were measured and data kindly made available by a related project (Kiely et al. 2009). 20 Irish Naturalists’ Journal Vol. 33 Part 1

Microathropod sampling, extraction and identification Microarthropods were sampled by taking four cores from each site, within 10 m of the GPS location of the National Soil Database sampling site. The soil cores were taken to 5 cm depth using a serrated coring device with a 5 cm diameter. These were placed in sample cups with a mesh screen bottom, and into plastic screw-cap jars for transport to the laboratory. The microarthropods were extracted using Tullgren funnels for 7 days into 70 per cent ethanol. All adult Oribatida and Gamasida were slidemounted in Hoyers medium (Krantz 1978)

A total of 108 mite taxa was recorded from 48 sites with 65 oribatid and 43 mesostigmatid taxa (Annex I). The most frequently recorded oribatid and mesostigmatid species were Heminothrus peltifer (Koch, 1839), and Uropoda minima Kramer, 1882, respectively. The most frequent oribatid, H. peltifer, is a primitive oribatid that is very common, especially in grasslands and forestry. The second most widely found oribatid species was Oppiella nova (Oudemans, 1902) and was present in almost all kinds of environments which is not surprising given its eurytopic ecological niche (Schatz 1983). Another oppid, Medioppia subpectinata (Oudemans, 1900) also occurred frequently. The most frequently found mesostigmatids were Uropoda minima and members of the family Ascidae which are both commonly found in most edaphic habitats in temperate regions. Within the oribatid taxa found in the survey, 19 (29.2%) occurred only in a single land use. Some of these species are well known habitat specialists e.g. Carabodes affinis Berlese, 1913, and C. labyrynthicus (Michael, 1879) that have only been found in forestry sites and Ceratozetes peritus Grandjean, 1951, which is also a typical forest inhabitant. Our records support these species’ preference for inhabiting arboreal environments (Bernini 1970, Rajski 1968). Other species may appear in a single land use because of the sampling intensity, e.g. Phauloppia lucorum (Koch, 1841), is usually recorded as inhabiting arboreal and forestry habitats but its dispersive behaviour means that it can often be found in a wide range of habitats (see Arroyo and Bolger 2007, 2010). For the gamasids, 16 out of 43 species (37.2 %) were collected in a single land use, as often occurs

with typical predatory species e.g. Pachylaelaps spp. and Macrocheles spp. Land use and management, particularly disturbance, are well known to influence mite abundance and diversity (e.g. Crossley et al. 1992, Behan-Pelletier 1999) and in this survey, land use had a significant effect on the total abundance of soil mites (H = 16.8, P = 0.002; data not shown). Furthermore, the significant effect of land use was evident in the abundance of both the oribatid mites (H = 15.1, P = 0.005; Fig. 2a) and mesostigmatid mites (H = 12.7, P = 0.013; Fig. 2b). Oribatid mites were most abundant in the coniferous plantation and rough grazing with 74.9 and 90.2 individuals per 100 cm3, respectively. Mesostigmatid mites were most abundant in broadleaved woodland with 12.7 individuals per 100 cm3, and were almost absent from peat sites (Fig. 2b). Mean mite taxon richness was also significantly different among land uses (H = 20.2, P < 0.001; data not shown). As with abundance, the oribatid species richness was greatest in the coniferous plantation and rough grazing land with 12 and 11 taxa per soil core, respectively (Land use: H = 20.0, P < 0.001; Fig. 3a). However, the total number of oribatid taxa recorded in each land use was similar in the coniferous plantation, rough grazing and pasture (Fig. 3b). Mean mesostigmatid taxa richness was lowest in the arable and peat, and greater in all other land uses (Land use: H = 12.6, P = 0.013; Fig. 3a). The total number of mesostigmatid taxa recorded was similar in all land uses except peat where only one species was recorded (Fig. 3b). There was no significant influence of soil type on total mite abundance (H = 14.7, P = 0.066), neither was there a significant influence of soil type on mesostigmatid abundance (H = 4.4, P = 0.820), taxon richness of oribatids (H = 4.8, P = 0.778) or mesostigmatids (H = 13.6, P = 0.09) (data not shown). However, oribatid abundance differed between soil types (H = 16.5, P = 0.036; data not shown). This was largely due to greater oribatid abundance in peat soils. Indeed, both oribatid mite abundance and taxon richness were significantly negatively correlated with bulk density and soil pH, and significantly positively correlated with organic matter (Table 2). Mesostigmatid abundance or taxon richness was not significantly correlated with any of the selected soil properties (Table 2). Several studies have found similar correlations between organic matter content and oribatid abundance (i.e. Black et al. 2003, Salmon et al. 2006, Gergócs and Hufnagel 2010) or species richness (Scheu and Schultz 1996).


Arroyo, J. et al.

Mite abundance and richness in an Irish survey of soil biodiversity

at Moorepark (CO. CORK) by Piotrowska (2009) and in peatlands samples from Clara (CO. OFFALY), Sharavogue (CO. OFFALY), Carrowbehy (CO. ROSCOMMON), Owenirragh (CO. MAYO) and Bellacorrick (CO. MAYO) by Wisdom (2010). The identification of this species was confirmed by Behan-Pelletier, the author of the species description. This species has a Holartic distribution (north Neartic and Iberian Peninsula), living in freshwater environments such as streams and in wet moss in peats and bogs areas (Pérez Íñigo 1997). Only females of the species have been found.

Figure 2. a) Oribatida and b) Mesostigmatida mite abundance by land use class. BL = Broadleaved forest, C = Coniferous plantation. Data are means; error bars = 1 s.e.

Figure 3. Mite species richness by land use class a) mean number of taxa, and b) total number of taxa recorded within land use class. BL = Broadleaved forest, C = Coniferous plantation. Total number of taxa is the sum of taxa recorded within a land use class; other data are means; error bars = 1 s.e

Table 2. Spearman correlations between selected soil properties and mite abundance and richness. Orib. = Oribatid, Meso. = Mesostigmatid. ** P P < 0.05 Soil property

Abundance

Taxa richness

Total

Orib.

Meso.

Total

Orib.

Meso.

Bulk density

-0.51**

-0.51**

-0.26

-0.43**

0.11

-0.26

pH

-0.34*

-0.38*

-0.03

-0.26

-0.34*

0.02

% organic matter

0.45**

0.44**

0.21

0.38*

0.43**

0.20

C:N ratio

0.17

0.23

-0.09

0.11

0.18

-0.09

First record for Ireland All the new records of mite species for Ireland offered in the next section of the paper were contrasted with the checklist of Luxton (1998) as well as with later works on mites in Ireland done by our team (Arroyo and Bolger 2007, 2010, Arroyo et al. 2009) Astegistidae Balogh, 1961 Astegistes pilosus (Koch, 1841) This is the first record for Ireland of the genus Astegistes. One individual of the species Astegistes pilosus was found in pasture near Annaghdown, CO. GALWAY (NSD 811, M310407), 18 August 22 Irish Naturalists’ Journal Vol. 33 Part 1

2006. The species has a Palaearctic distribution and also occurs in north-east China. Weigmann (2008) found the species in salt marsh-dune complexes in sand rich soils in Sylt (Germany) New species records Limnozetidae Thor, 1937 Limnozetes amnicus Behan Pelletier, 1989 First record for Ireland Thirteen individuals were collected from a raised peat south of Maam Cross, CO. GALWAY (NSD 784, L960360), 17 August 2006. There are also two recent records reported in PhD theses: from improved grasslands

Quadroppiidae Balogh, 1983 Quadroppia (Coronoquadroppia) pseudocircumita Minguez, Ruiz and Subías, 1985 First record for Ireland One individual was collected in a coniferous plantation forest on the Arra Mountains, CO. TIPPERARY (NSD 650, R761760), 7 September 2006. There are subsequent, as yet unpublished records from forest sites in Ireland (Arroyo et al. 2013). This species has a Holartic distribution (Western Palaearctic and Canada) and has been found in Peru. Monson (1998) also recorded this oribatid species in England. It shows wide tolerance to soil humidiy conditions having been found in cultivated lands and in wet habitats with a large amount of decomposing organic matter (Subías and Arillo 2001) Nothridae Berlese, 1896 Nothrus biciliatus Koch, 1841 ‘sp. inq.’ Earliest record for Ireland One adult was collected in a pasture near Stonehouse, CO. WATERFORD (NSD 9, S510110), 21 August 2006. In addition, two juveniles were recovered from a pasture at Ratoath, CO. MEATH (NSD 876, O010510), 14 June 2006 and one juvenile from calcareous grassland on Omey Island in CO. GALWAY (NSD 879, L560560), 17 August 2006, was found. The species has more recently been found in Irish forestry by Arroyo et al. (2013), and by Arroyo and Bolger (2010) in Machair habitat. This species has been reported from Germany by Subías (2004) and was also found in the Galapagos Islands sensu Schatz (1998). Because of its status as species inquirenda the records of this taxon should be carefully considered (i.e. Nothrus borussicus Sellnick, 1928 is Nothrus biciliatus sensu Trägårdh, 1904, Hammer 1946, non C. L. Koch, 1841).

Acknowledgements This study was funded by the Environmental ERDTI Programme 2000-2006, financed by the Irish Government under the National Development Plan and administered on behalf of the Department of Environment and Local Government by the Environmental Protection Agency (“CréBeo: Baseline data, response to pressures, functions and conservation of keystone micro- and macro-organisms in Irish soils”, 2005-S-LS-8). We acknowledge the constructive comments and valuable suggestions of the anonymous referee and the editor of the INJ. References Arroyo, J. and Bolger, T. (2007) Oribatid (Acari, Oribatida) and gamasid (Acari: Gamasida) mite communities in an Irish Sitka spruce (Picea sitchensis (Bong.) Carr.) with three first records for Ireland. Irish Naturalists’ Journal 28: 452-458. Arroyo, J. and Bolger, T. (2010) The mite (Arachnida: Acari) fauna inhabiting Irish machair: a European Union priority coastal habitat. Journal of Coastal Conservation: Planning and Management 15: 181-194. Arroyo, J., Kenny, J. and Bolger (2013) Variation between mite communities in Irish forest types – importance of bark and moss cover in canopy. Pedobiologia 56: 233-239. Arroyo J., Moraza, M.L. and Bolger, T. (2008) First records of Leptogamasus (Leptogamasus) obesus (Holzmann, 1969) and Leptogamasus (Valigamasus) pannonicus (Willmann, 1951) (Acari: Gamasida: Parasitidae) in Ireland. Bulletin of the Irish Biogeographical Society 32: 212-215. Arroyo J., Moraza M.L. and Bolger T. (2010) The mesostigmatid mite (Acari, Mesostigmata) community in canopies of Sitka spruce in Ireland and a comparison with ground moss habitats. Graellsia 66: 29-37. Arroyo, J., Neville, P. and Bolger, T. (2009) Mites occurring in the canopy of Sitka spruce growing in Ireland. Proceedings of the XII International Congress of Acarology, Amsterdam, The Netherlands. In Sabelis, M. W. and Bruin, J. (eds) Trends in Acarology: 105-109. Springer Science, Dordrecht. Balogh, J. and Balogh, P. (1992) The oribatid mite genera of the world. 1 and 2. Hungarian Natural History Museum, Budapest. Behan-Pelletier, V.M. (1999) Oribatid mite biodiversity in agroecosystems: role for bioindication. Agriculture, Ecosystems and Environment 74: 411-423. Irish Naturalists’ Journal Vol. 33 Part 1 23

Arroyo, J. et al.


at Moorepark (CO. CORK) by Piotrowska (2009) and in peatlands samples from Clara (CO. OFFALY), Sharavogue (CO. OFFALY), Carrowbehy (CO. ROSCOMMON), Owenirragh (CO. MAYO) and Bellacorrick (CO. MAYO) by Wisdom (2010). The identification of this species was confirmed by Behan-Pelletier, the author of the species description. This species has a Holartic distribution (north Neartic and Iberian Peninsula), living in freshwater environments such as streams and in wet moss in peats and bogs areas (Pérez Íñigo 1997). Only females of the species have been found.

Figure 2. a) Oribatida and b) Mesostigmatida mite abundance by land use class. BL = Broadleaved forest, C = Coniferous plantation. Data are means; error bars = 1 s.e.

Figure 3. Mite species richness by land use class a) mean number of taxa, and b) total number of taxa recorded within land use class. BL = Broadleaved forest, C = Coniferous plantation. Total number of taxa is the sum of taxa recorded within a land use class; other data are means; error bars = 1 s.e

Table 2. Spearman correlations between selected soil properties and mite abundance and richness. Orib. = Oribatid, Meso. = Mesostigmatid. ** P P < 0.05 Soil property

Abundance

Taxa richness

Total

Orib.

Meso.

Total

Orib.

Meso.

Bulk density

-0.51**

-0.51**

-0.26

-0.43**

0.11

-0.26

pH

-0.34*

-0.38*

-0.03

-0.26

-0.34*

0.02

% organic matter

0.45**

0.44**

0.21

0.38*

0.43**

0.20

C:N ratio

0.17

0.23

-0.09

0.11

0.18

-0.09

First record for Ireland All the new records of mite species for Ireland offered in the next section of the paper were contrasted with the checklist of Luxton (1998) as well as with later works on mites in Ireland done by our team (Arroyo and Bolger 2007, 2010, Arroyo et al. 2009) Astegistidae Balogh, 1961 Astegistes pilosus (Koch, 1841) This is the first record for Ireland of the genus Astegistes. One individual of the species Astegistes pilosus was found in pasture near Annaghdown, CO. GALWAY (NSD 811, M310407), 18 August 22 Irish Naturalists’ Journal Vol. 33 Part 1

2006. The species has a Palaearctic distribution and also occurs in north-east China. Weigmann (2008) found the species in salt marsh-dune complexes in sand rich soils in Sylt (Germany) New species records Limnozetidae Thor, 1937 Limnozetes amnicus Behan Pelletier, 1989 First record for Ireland Thirteen individuals were collected from a raised peat south of Maam Cross, CO. GALWAY (NSD 784, L960360), 17 August 2006. There are also two recent records reported in PhD theses: from improved grasslands

Quadroppiidae Balogh, 1983 Quadroppia (Coronoquadroppia) pseudocircumita Minguez, Ruiz and Subías, 1985 First record for Ireland One individual was collected in a coniferous plantation forest on the Arra Mountains, CO. TIPPERARY (NSD 650, R761760), 7 September 2006. There are subsequent, as yet unpublished records from forest sites in Ireland (Arroyo et al. 2013). This species has a Holartic distribution (Western Palaearctic and Canada) and has been found in Peru. Monson (1998) also recorded this oribatid species in England. It shows wide tolerance to soil humidiy conditions having been found in cultivated lands and in wet habitats with a large amount of decomposing organic matter (Subías and Arillo 2001) Nothridae Berlese, 1896 Nothrus biciliatus Koch, 1841 ‘sp. inq.’ Earliest record for Ireland One adult was collected in a pasture near Stonehouse, CO. WATERFORD (NSD 9, S510110), 21 August 2006. In addition, two juveniles were recovered from a pasture at Ratoath, CO. MEATH (NSD 876, O010510), 14 June 2006 and one juvenile from calcareous grassland on Omey Island in CO. GALWAY (NSD 879, L560560), 17 August 2006, was found. The species has more recently been found in Irish forestry by Arroyo et al. (2013), and by Arroyo and Bolger (2010) in Machair habitat. This species has been reported from Germany by Subías (2004) and was also found in the Galapagos Islands sensu Schatz (1998). Because of its status as species inquirenda the records of this taxon should be carefully considered (i.e. Nothrus borussicus Sellnick, 1928 is Nothrus biciliatus sensu Trägårdh, 1904, Hammer 1946, non C. L. Koch, 1841).

Acknowledgements This study was funded by the Environmental ERDTI Programme 2000-2006, financed by the Irish Government under the National Development Plan and administered on behalf of the Department of Environment and Local Government by the Environmental Protection Agency (“CréBeo: Baseline data, response to pressures, functions and conservation of keystone micro- and macro-organisms in Irish soils”, 2005-S-LS-8). We acknowledge the constructive comments and valuable suggestions of the anonymous referee and the editor of the INJ. References Arroyo, J. and Bolger, T. (2007) Oribatid (Acari, Oribatida) and gamasid (Acari: Gamasida) mite communities in an Irish Sitka spruce (Picea sitchensis (Bong.) Carr.) with three first records for Ireland. Irish Naturalists’ Journal 28: 452-458. Arroyo, J. and Bolger, T. (2010) The mite (Arachnida: Acari) fauna inhabiting Irish machair: a European Union priority coastal habitat. Journal of Coastal Conservation: Planning and Management 15: 181-194. Arroyo, J., Kenny, J. and Bolger (2013) Variation between mite communities in Irish forest types – importance of bark and moss cover in canopy. Pedobiologia 56: 233-239. Arroyo J., Moraza, M.L. and Bolger, T. (2008) First records of Leptogamasus (Leptogamasus) obesus (Holzmann, 1969) and Leptogamasus (Valigamasus) pannonicus (Willmann, 1951) (Acari: Gamasida: Parasitidae) in Ireland. Bulletin of the Irish Biogeographical Society 32: 212-215. Arroyo J., Moraza M.L. and Bolger T. (2010) The mesostigmatid mite (Acari, Mesostigmata) community in canopies of Sitka spruce in Ireland and a comparison with ground moss habitats. Graellsia 66: 29-37. Arroyo, J., Neville, P. and Bolger, T. (2009) Mites occurring in the canopy of Sitka spruce growing in Ireland. Proceedings of the XII International Congress of Acarology, Amsterdam, The Netherlands. In Sabelis, M. W. and Bruin, J. (eds) Trends in Acarology: 105-109. Springer Science, Dordrecht. Balogh, J. and Balogh, P. (1992) The oribatid mite genera of the world. 1 and 2. Hungarian Natural History Museum, Budapest. Behan-Pelletier, V.M. (1999) Oribatid mite biodiversity in agroecosystems: role for bioindication. Agriculture, Ecosystems and Environment 74: 411-423. Irish Naturalists’ Journal Vol. 33 Part 1 23

Arroyo, J. et al.

Bernini, F. (1970) Notulae Oribatologicae II. Gli Oribatei (Acarida) delle Alpi Apuane (1º serie). Lavori della Societá Italiana di Biogeografia, Nuova Serie 1: 389-429. Black, H.I.J., Parekh, N.R., Chaplow, J.S., Monson, F., Watkins, J., Creamer, R., Potter, E.D., Poskitt, J.M., Rowland, P., Ainsworth, G., and Hornung, M. (2003): Assessing soil biodiversity across Great Britain: national trends in the occurrence of heterotrophic bacteria and invertebrates in soil. Journal of Environmental Management 67: 255-266. Crossley Jr., D.A., Mueller, B.R. and Perdue, J.C. (1992) Biodiversity of microarthropods in agricultural soils: relations to processes. Agriculture, Ecosystems and Environment 40: 37-46. Gergócs, V. and Hufnagel, L. (2010) Application of oribatid mites as indicators (review). Applied Ecology and Environmental Research 7: 79-98. Karg, W. (1993) Acari (Acarina), Milben Parasitoformes (Anactinochaeta) Cohors Gamasina Leach Raubmilben. Gustav Fischer Verlag, Jena. Kiely, G., McGoff, N.M., Eaton, J.M., Xu, X., Leahy, P. and Carton, O. (2009) SoilC: Measurement and modelling of soil carbon stocks and stock changes in Irish soils. Environmental Protection Agency, Johnstown Castle, Wexford, Ireland, STRIVE Report 2005-S-MS-26-M1. Krantz, G.W. (1978) A manual of acarology. Second edition. Oregon State University Book Stores, Corvallis, Oregon. Luxton, M. (1998) The oribatid and parasitiform mites of Ireland, with particular reference to the work of J. N. Halbert (1872-1948). Bulletin of the Irish Biogeographical Society 22: 1-72. Mitchell, J.M. (1979) Energetics of oribatid mites (Acari: Cryptostigmata) in an aspen woodland soil. Pedobiologia 19: 89-98. Monson, F.D. (1998) Oribatid mites (Acari: Crytostigmata) from Slapton wood and the vicinity of Slapton ley. Field Studies 9: 325336. Moraza, M. L., Arroyo, J. and Bolger, T. (2009) Three new species of mites (Acari: Zerconidae) from canopy habitats in Irish forests. Zootaxa 2019: 29-39. Perez Iñigo, C. (1997) Acari, Oribatei, Gymnonota I. In Ramos, M. A. et al. (eds) Fauna Ibérica Vol. 9. Museo Nacional de Ciencias Naturales. CSIC. Madrid. Petersen, H. and Luxton, M. (1982) A comparative analysis of soil fauna populations and their role in decomposition processes. Oikos 39: 287-388. Piotrowska, K. (2009) The effects of grassland plant 24 Irish Naturalists’ Journal Vol. 33 Part 1


species composition and diversity on earthworm, mite and soil microbial communities. Unpublished PhD thesis. University College Dublin. Rajski, A. (1968) Autoecological – zoogeographical analysis of moss mites (Acari, Oribatei) on the basis of fauna in the Poznan environs. Part II. Fragmenta faunistica 14: 277-405. Salmon, S., Mantel, J., Frizzera, L. snd Zanella, A. (2006) Changes in humus forms and soil animal communities in two developmental phases of Norway spruce on an acidic substrate. Forest Ecology and Management 237: 47-56. Schatz, H. (1983) Oribatei, Hornmilben. Catalogous Faunae Austriae 9i: 1-118. Schatz, H. (1998) Oribatid mites of the Galapagos Islands – faunistics, ecology and speciation. Experimental and Applied Acarology 22: 373-409. Schatz, H. (2002) Die Oribatidenliteratur und die beschriebenen Oribatidenarten (17582001) – Eine Analyse. Abhandlungen und Berichte des Naturkundemuseums Görlitz 74: 37-45. Scheu, S. and Schulz, E. (1996) Secondary succession, soil formation and development of a diverse community of oribatids and saprophagous soil macro-invertebrates. Biodiversity and Conservation 5: 235-250. Subías, L.S. (2004) Listado sistemático, sinonímico y biogeográfico de los ácaros oribátidos (Acariformes, Oribatida) del mundo (1758–2002). Graellsia 60: 3-305. Subías, L.S. and Arillo, A. (2001) Acari, Oribatei, Gymnonota II. In Ramos, M. A. et al. (eds) Fauna Ibérica 15, MNCN, CSIC, Madrid. Weigmann, G. (1971) Collembolen und Oribatiden in Salzwiesen der Ostseeküste und des Binnenlandes von Norddeutschland (Insecta: Collembola - Acari: Oribatei). Faunistisch-Ökologische Mitteilungen 4: 11-20. Weigmann, G. (2008) Oribatid mite communities in Atlantic salt marshes: an ecological and biogeographical comparison between German and Portuguese sea shores. In Bertrand, M., Kreiter, S., McCoy, K. D., Migeon, A., Navajas, M., Tixier, M-S. and Vial, L. (eds). Integrative Acarology. Proceedings of the 6th European Congress, 2008: 275-283. European Association of Acarologists, Vienna. Wisdom, R. (2010) Biodiversity of some of the terrestrial invertebrate taxa occurring in terrestrial habitats in different types of Irish peatland. Unpublished PhD thesis. University College Dublin.

Annex I. Oribatid and Mesostigmatid taxa recorded in the CréBeo survey, the number of sites at which they were recorded and percentage occurrence across sites. (BL = Broadleaved forest, C = Coniferous plantation, RG = Rough Grazing) No. sites

(%)

Presence/absence by land use Arable

Pasture

Forest BL

Forest C

RG

Peat

X

X

X

ORIBATIDA Heminothrus peltifer (Koch, 1839)

17

35.4

Oppiella nova (Oudemans, 1902)

14

29.2

X

X

X

X

Banksinoma lanceolata (Michael, 1885)

13

27.1

X

X

X

X

X

Medioppia subpectinata (Oudemans, 1900)

13

27.1

X

X

X

X

X

Minunthozetes semirufus (Koch, 1841)

13

27.1

X

X

X

X

X

Nanhermannia dorsalis (Banks, 1896)

12

25.0

X

X

X

X

X

Tectocepheus velatus (Michael, 1880)

12

25.0

X

X

X

X

X

Parachipteria punctata (Nicolet, 1855)

10

20.8

X

X

X

X

Ramusella (R.) clavipectinata (Michael, 1885)

10

20.8

X

X

X

X

Pantelozetes paolii (Oudemans, 1913)

9

18.8

X

X

X

X

Achipteria coleoptrata (Linnaeus, 1758)

8

16.7

X

Eupelops nepotulus (Berlese, 1916)

7

14.6

X

Liebstadia similis (Michael, 1888)

7

14.6

X

X

X

X

Ramusella (I.) elliptica (Berlese, 1908)

7

14.6

X

X

X

X

Tectocepheus minor Berlese, 1903

7

14.6

X

X

Disorrhina ornata (Oudemans, 1900)

5

10.4

X

X

Hypochtnonius rufulus Koch, 1835

5

10.4

Inigozetes sp

5

10.4

X

Malaconothrus sp

5

10.4

X

Pthiracarus (P.) affinis (Hull, 1914)

5

10.4

X

Suctobelbella (S.) longicuspis Jacot, 1937

5

10.4

X

Trimalaconothrus sp

5

10.4

X

X

X

Hemileius initialis (Berlese, 1908)

4

8.3

X

X

X

X

Punctoribates punctum (Koch, 1839)

4

8.3

X

X

X

Chamobates cuspidatus (Michael, 1884)

3

6.3

X

Chamobates schuetzi (Oudemans, 1902)

3

6.3

X

Edwardzetes (E.) edwardsi (Nicolet, 1855)

3

6.3

X

Nanhermannia nana (Nicolet, 1855)

3

6.3

X

Scheloribates laevigatus (Koch, 1835)

3

6.3

X

Suctobelba trigona (Michael, 1888)

3

6.3

X

X

X

Suctobelbella (S.) acutidens (Forsslund, 1941)

3

6.3

X

X

Suctobelbella sp

3

6.3

X

S. (S.) subcornigera (Forsslund, 1941)

3

6.3

X

Carabodes willmanni Bernini, 1975

2

4.2

Inigozetes reticulatus (Pérez-Íñigo, 1969)

2

4.2

Medioppia obsoleta (Paoli, 1908)

2

4.2

X

X

X

X X

X X

X X X

X

X

X X

X

X

X

X

X

X

X X

X X X

X X

X

X

X

X X X

X


Arroyo, J. et al.

Bernini, F. (1970) Notulae Oribatologicae II. Gli Oribatei (Acarida) delle Alpi Apuane (1º serie). Lavori della Societá Italiana di Biogeografia, Nuova Serie 1: 389-429. Black, H.I.J., Parekh, N.R., Chaplow, J.S., Monson, F., Watkins, J., Creamer, R., Potter, E.D., Poskitt, J.M., Rowland, P., Ainsworth, G., and Hornung, M. (2003): Assessing soil biodiversity across Great Britain: national trends in the occurrence of heterotrophic bacteria and invertebrates in soil. Journal of Environmental Management 67: 255-266. Crossley Jr., D.A., Mueller, B.R. and Perdue, J.C. (1992) Biodiversity of microarthropods in agricultural soils: relations to processes. Agriculture, Ecosystems and Environment 40: 37-46. Gergócs, V. and Hufnagel, L. (2010) Application of oribatid mites as indicators (review). Applied Ecology and Environmental Research 7: 79-98. Karg, W. (1993) Acari (Acarina), Milben Parasitoformes (Anactinochaeta) Cohors Gamasina Leach Raubmilben. Gustav Fischer Verlag, Jena. Kiely, G., McGoff, N.M., Eaton, J.M., Xu, X., Leahy, P. and Carton, O. (2009) SoilC: Measurement and modelling of soil carbon stocks and stock changes in Irish soils. Environmental Protection Agency, Johnstown Castle, Wexford, Ireland, STRIVE Report 2005-S-MS-26-M1. Krantz, G.W. (1978) A manual of acarology. Second edition. Oregon State University Book Stores, Corvallis, Oregon. Luxton, M. (1998) The oribatid and parasitiform mites of Ireland, with particular reference to the work of J. N. Halbert (1872-1948). Bulletin of the Irish Biogeographical Society 22: 1-72. Mitchell, J.M. (1979) Energetics of oribatid mites (Acari: Cryptostigmata) in an aspen woodland soil. Pedobiologia 19: 89-98. Monson, F.D. (1998) Oribatid mites (Acari: Crytostigmata) from Slapton wood and the vicinity of Slapton ley. Field Studies 9: 325336. Moraza, M. L., Arroyo, J. and Bolger, T. (2009) Three new species of mites (Acari: Zerconidae) from canopy habitats in Irish forests. Zootaxa 2019: 29-39. Perez Iñigo, C. (1997) Acari, Oribatei, Gymnonota I. In Ramos, M. A. et al. (eds) Fauna Ibérica Vol. 9. Museo Nacional de Ciencias Naturales. CSIC. Madrid. Petersen, H. and Luxton, M. (1982) A comparative analysis of soil fauna populations and their role in decomposition processes. Oikos 39: 287-388. Piotrowska, K. (2009) The effects of grassland plant 24 Irish Naturalists’ Journal Vol. 33 Part 1


species composition and diversity on earthworm, mite and soil microbial communities. Unpublished PhD thesis. University College Dublin. Rajski, A. (1968) Autoecological – zoogeographical analysis of moss mites (Acari, Oribatei) on the basis of fauna in the Poznan environs. Part II. Fragmenta faunistica 14: 277-405. Salmon, S., Mantel, J., Frizzera, L. snd Zanella, A. (2006) Changes in humus forms and soil animal communities in two developmental phases of Norway spruce on an acidic substrate. Forest Ecology and Management 237: 47-56. Schatz, H. (1983) Oribatei, Hornmilben. Catalogous Faunae Austriae 9i: 1-118. Schatz, H. (1998) Oribatid mites of the Galapagos Islands – faunistics, ecology and speciation. Experimental and Applied Acarology 22: 373-409. Schatz, H. (2002) Die Oribatidenliteratur und die beschriebenen Oribatidenarten (17582001) – Eine Analyse. Abhandlungen und Berichte des Naturkundemuseums Görlitz 74: 37-45. Scheu, S. and Schulz, E. (1996) Secondary succession, soil formation and development of a diverse community of oribatids and saprophagous soil macro-invertebrates. Biodiversity and Conservation 5: 235-250. Subías, L.S. (2004) Listado sistemático, sinonímico y biogeográfico de los ácaros oribátidos (Acariformes, Oribatida) del mundo (1758–2002). Graellsia 60: 3-305. Subías, L.S. and Arillo, A. (2001) Acari, Oribatei, Gymnonota II. In Ramos, M. A. et al. (eds) Fauna Ibérica 15, MNCN, CSIC, Madrid. Weigmann, G. (1971) Collembolen und Oribatiden in Salzwiesen der Ostseeküste und des Binnenlandes von Norddeutschland (Insecta: Collembola - Acari: Oribatei). Faunistisch-Ökologische Mitteilungen 4: 11-20. Weigmann, G. (2008) Oribatid mite communities in Atlantic salt marshes: an ecological and biogeographical comparison between German and Portuguese sea shores. In Bertrand, M., Kreiter, S., McCoy, K. D., Migeon, A., Navajas, M., Tixier, M-S. and Vial, L. (eds). Integrative Acarology. Proceedings of the 6th European Congress, 2008: 275-283. European Association of Acarologists, Vienna. Wisdom, R. (2010) Biodiversity of some of the terrestrial invertebrate taxa occurring in terrestrial habitats in different types of Irish peatland. Unpublished PhD thesis. University College Dublin.

Annex I. Oribatid and Mesostigmatid taxa recorded in the CréBeo survey, the number of sites at which they were recorded and percentage occurrence across sites. (BL = Broadleaved forest, C = Coniferous plantation, RG = Rough Grazing) No. sites

(%)


Pasture

Forest BL

Forest C

RG

Peat

X

X

X

ORIBATIDA Heminothrus peltifer (Koch, 1839)

17

35.4

Oppiella nova (Oudemans, 1902)

14

29.2

X

X

X

X

Banksinoma lanceolata (Michael, 1885)

13

27.1

X

X

X

X

X

Medioppia subpectinata (Oudemans, 1900)

13

27.1

X

X

X

X

X

Minunthozetes semirufus (Koch, 1841)

13

27.1

X

X

X

X

X

Nanhermannia dorsalis (Banks, 1896)

12

25.0

X

X

X

X

X

Tectocepheus velatus (Michael, 1880)

12

25.0

X

X

X

X

X

Parachipteria punctata (Nicolet, 1855)

10

20.8

X

X

X

X

Ramusella (R.) clavipectinata (Michael, 1885)

10

20.8

X

X

X

X

Pantelozetes paolii (Oudemans, 1913)

9

18.8

X

X

X

X

Achipteria coleoptrata (Linnaeus, 1758)

8

16.7

X

Eupelops nepotulus (Berlese, 1916)

7

14.6

X

Liebstadia similis (Michael, 1888)

7

14.6

X

X

X

X

Ramusella (I.) elliptica (Berlese, 1908)

7

14.6

X

X

X

X

Tectocepheus minor Berlese, 1903

7

14.6

X

X

Disorrhina ornata (Oudemans, 1900)

5

10.4

X

X

Hypochtnonius rufulus Koch, 1835

5

10.4

Inigozetes sp

5

10.4

X

Malaconothrus sp

5

10.4

X

Pthiracarus (P.) affinis (Hull, 1914)

5

10.4

X

Suctobelbella (S.) longicuspis Jacot, 1937

5

10.4

X

Trimalaconothrus sp

5

10.4

X

X

X

Hemileius initialis (Berlese, 1908)

4

8.3

X

X

X

X

Punctoribates punctum (Koch, 1839)

4

8.3

X

X

X

Chamobates cuspidatus (Michael, 1884)

3

6.3

X

Chamobates schuetzi (Oudemans, 1902)

3

6.3

X

Edwardzetes (E.) edwardsi (Nicolet, 1855)

3

6.3

X

Nanhermannia nana (Nicolet, 1855)

3

6.3

X

Scheloribates laevigatus (Koch, 1835)

3

6.3

X

Suctobelba trigona (Michael, 1888)

3

6.3

X

X

X

Suctobelbella (S.) acutidens (Forsslund, 1941)

3

6.3

X

X

Suctobelbella sp

3

6.3

X

S. (S.) subcornigera (Forsslund, 1941)

3

6.3

X

Carabodes willmanni Bernini, 1975

2

4.2

Inigozetes reticulatus (Pérez-Íñigo, 1969)

2

4.2

Medioppia obsoleta (Paoli, 1908)

2

4.2

X

X

X

X X

X X

X X X

X

X

X X

X

X

X

X

X

X

X X

X X X

X X

X

X

X

X X X

X


Arroyo, J. et al.


Annex I. (cont.) Oribatid and Mesostigmatid taxa recorded in the CréBeo survey, the number of sites at which they were recorded and percentage occurrence across sites. (BL = Broadleaved forest, C = Coniferous plantation, RG = Rough Grazing) No. sites

(%)


Pasture

Forest BL

No. sites Forest C

Nothrus biciliatus Koch, 1841 “sp. inq.”

2

4.2

X

Nothrus palustris Koch, 1839

2

4.2

X

Nothrus silvestris Nicolet, 1855

2

4.2

X

Phthiracarus nr nitens (Nicolet, 1855)

2

4.2

X

Phthiracarus sp 2

2

4.2

Quadroppia (Q.) quadricarinata (Michael, 1885)

2

4.2

Acrotritia duplicata (Grandjean, 1953)

2

4.2

X

Serratoppia serrata (Mihelčič, 1956)

2

4.2

X

Suctobelbella (S.) sarekensis (Forsslund, 1941)

2

4.2

Xenillus tegeocranus (Hermann, 1804)

2

4.2

X

Adoristes poppei (Oudemans, 1906)

1

2.1

X

Ceratozetes peritus Grandjean, 1951

1

2.1

Carabodes affinis Berlese, 1913

1

2.1

X

Carabodes labyrynthicus (Michael, 1879)

1

2.1

X

Hermannia gibba (Koch, 1839)

1

2.1

Humerobates rostrolamellatus Grandjean, 1936

1

2.1

Hypochthoniella cf

1

2.1

Lauroppia fallax (Paoli, 1908)

1

2.1

Astegistes pilosus (Koch, 1841)

1

2.1

Liochthonius sp.

1

2.1

Annex I. (cont.) Oribatid and Mesostigmatid taxa recorded in the CréBeo survey, the number of sites at which they were recorded and percentage occurrence across sites. (BL = Broadleaved forest, C = Coniferous plantation, RG = Rough Grazing)

RG

X


Pasture

Forest BL

X

X

Dynichus perforatus Kramer, 1886

7

14.6

Laelapidae

6

12.5

X

X

Paragamasus robustus (Oudemans, 1902)

6

12.5

X

X

Pergamasus crassipes (Linnaeus, 1758)

6

12.5

X

X

X

Veigaia nemorensis (C.L. Koch, 1839)

6

12.5

X

X

Lysigamasus celticus Bhattacharyya, 1963

5

10.4

X

X

Lysigamasus sp. 1

5

10.4

X

X

Uropoda orbicularis (Müller, 1776)

5

10.4

Leptogamasus sp. 2

4

8.3

X

Lysigamasus sp. 3

4

8.3

X

Pachylaelaps longisetis Halbert, 1915

3

6.3

Dynichus sp.

2

4.3

Eviphis sp.

2

4.2

Lysigamasus nr runciger (Berlese, 1904)

2

4.2

X

Macrocheles submotus Falconer, 1924

2

4.2

X

Olodiscus minima (Kramer, 1882)

2

4.2

X

Pachyseius sp.

2

4.2

Paragamasus sp. 1

2

4.2

X

Rhodocarellus sp. 1

2

4.2

X

Trachytes aegrota (C. L. Koch, 1839)

2

4.2

Veigaia kochi (Trägardh, 1901)

2

4.2

Zerconopsis sp.

2

4.2

X

Amblyseius sp.

1

2.1

X

Arctoseius sp.

1

2.1

X X

X

X

(%)

Peat

X

X

X

X X

X X X X X X

X X

X

Epicriopsis horridus Kramer, 1876

1

2.1

2.1

X

Geholaspis mandibularis (Berlese, 1904)

1

2.1

Phthiracarus (A.) anonymus Grandjean, 1933

1

2.1

Hypoaspis oblonga (Halbert, 1915)

1

2.1

X

Phthiracarus sp. 1

1

2.1

Lysigamasus nr vagabundus (Karg, 1968)

1

2.1

X

Quadroppia (C.) pseudocircumita Mínguez et al., 1985

1

2.1

Macrocheles opacus (C.L. Koch, 1839)

1

2.1

Macrocheles sp.

1

2.1

Pachylaelaps sp. 1

1

2.1

Pachylaelaps sp. 2

1

2.1

X

Paragamasus sp. 2

1

2.1

X

Pergamasinae

1

2.1

Parazercon cf.

1

2.1

Polyaspis sp.

1

2.1

Veigaia planicola Berlese, 1892

1

2.1

Zercon sp.

1

2.1

2.1

X

MESOSTIGMATA Uropoda minima Kramer, 1882

10

20.8

X

Ascidae

9

18.8

X

Leptogamasus sp.1

9

18.8

Paragamasus similis (Willmann, 1953)

9

Rhodacarus roseus Oudemans, 1902

8


X

X

X

X

X

X

X

X

18.8

X

X

X

X

16.7

X

X

X

X

X

X X

2.1

1

X

X

1

Zygoribatula sp.

X

X

1

X

X

X

Phauloppia lucorum (Koch, 1841)

2.1

X X

X

Nothrus pratensis Sellnick, 1928

1

Peat

X

X

2.1

Scutovertex sculptus Michael, 1879

X

X

2.1

X

X

X

1

X

X

X

1

X

X

X

Nothrus anauniensis Canestrini & Fanzao, 1876

X

RG

X X

Limnozetes amnicus Behan-Pelletier, 1989

X

Forest C

X

X X

X

X X X

X X X X X


Arroyo, J. et al.


Annex I. (cont.) Oribatid and Mesostigmatid taxa recorded in the CréBeo survey, the number of sites at which they were recorded and percentage occurrence across sites. (BL = Broadleaved forest, C = Coniferous plantation, RG = Rough Grazing) No. sites

(%)


Pasture

Forest BL

No. sites Forest C

Nothrus biciliatus Koch, 1841 “sp. inq.”

2

4.2

X

Nothrus palustris Koch, 1839

2

4.2

X

Nothrus silvestris Nicolet, 1855

2

4.2

X

Phthiracarus nr nitens (Nicolet, 1855)

2

4.2

X

Phthiracarus sp 2

2

4.2

Quadroppia (Q.) quadricarinata (Michael, 1885)

2

4.2

Acrotritia duplicata (Grandjean, 1953)

2

4.2

X

Serratoppia serrata (Mihelčič, 1956)

2

4.2

X

Suctobelbella (S.) sarekensis (Forsslund, 1941)

2

4.2

Xenillus tegeocranus (Hermann, 1804)

2

4.2

X

Adoristes poppei (Oudemans, 1906)

1

2.1

X

Ceratozetes peritus Grandjean, 1951

1

2.1

Carabodes affinis Berlese, 1913

1

2.1

X

Carabodes labyrynthicus (Michael, 1879)

1

2.1

X

Hermannia gibba (Koch, 1839)

1

2.1

Humerobates rostrolamellatus Grandjean, 1936

1

2.1

Hypochthoniella cf

1

2.1

Lauroppia fallax (Paoli, 1908)

1

2.1

Astegistes pilosus (Koch, 1841)

1

2.1

Liochthonius sp.

1

2.1

Annex I. (cont.) Oribatid and Mesostigmatid taxa recorded in the CréBeo survey, the number of sites at which they were recorded and percentage occurrence across sites. (BL = Broadleaved forest, C = Coniferous plantation, RG = Rough Grazing)

RG

X


Pasture

Forest BL

X

X

Dynichus perforatus Kramer, 1886

7

14.6

Laelapidae

6

12.5

X

X

Paragamasus robustus (Oudemans, 1902)

6

12.5

X

X

Pergamasus crassipes (Linnaeus, 1758)

6

12.5

X

X

X

Veigaia nemorensis (C.L. Koch, 1839)

6

12.5

X

X

Lysigamasus celticus Bhattacharyya, 1963

5

10.4

X

X

Lysigamasus sp. 1

5

10.4

X

X

Uropoda orbicularis (Müller, 1776)

5

10.4

Leptogamasus sp. 2

4

8.3

X

Lysigamasus sp. 3

4

8.3

X

Pachylaelaps longisetis Halbert, 1915

3

6.3

Dynichus sp.

2

4.3

Eviphis sp.

2

4.2

Lysigamasus nr runciger (Berlese, 1904)

2

4.2

X

Macrocheles submotus Falconer, 1924

2

4.2

X

Olodiscus minima (Kramer, 1882)

2

4.2

X

Pachyseius sp.

2

4.2

Paragamasus sp. 1

2

4.2

X

Rhodocarellus sp. 1

2

4.2

X

Trachytes aegrota (C. L. Koch, 1839)

2

4.2

Veigaia kochi (Trägardh, 1901)

2

4.2

Zerconopsis sp.

2

4.2

X

Amblyseius sp.

1

2.1

X

Arctoseius sp.

1

2.1

X X

X

X

(%)

Peat

X

X

X

X X

X X X X X X

X X

X

Epicriopsis horridus Kramer, 1876

1

2.1

2.1

X

Geholaspis mandibularis (Berlese, 1904)

1

2.1

Phthiracarus (A.) anonymus Grandjean, 1933

1

2.1

Hypoaspis oblonga (Halbert, 1915)

1

2.1

X

Phthiracarus sp. 1

1

2.1

Lysigamasus nr vagabundus (Karg, 1968)

1

2.1

X

Quadroppia (C.) pseudocircumita Mínguez et al., 1985

1

2.1

Macrocheles opacus (C.L. Koch, 1839)

1

2.1

Macrocheles sp.

1

2.1

Pachylaelaps sp. 1

1

2.1

Pachylaelaps sp. 2

1

2.1

X

Paragamasus sp. 2

1

2.1

X

Pergamasinae

1

2.1

Parazercon cf.

1

2.1

Polyaspis sp.

1

2.1

Veigaia planicola Berlese, 1892

1

2.1

Zercon sp.

1

2.1

2.1

X

MESOSTIGMATA Uropoda minima Kramer, 1882

10

20.8

X

Ascidae

9

18.8

X

Leptogamasus sp.1

9

18.8

Paragamasus similis (Willmann, 1953)

9

Rhodacarus roseus Oudemans, 1902

8


X

X

X

X

X

X

X

X

18.8

X

X

X

X

16.7

X

X

X

X

X

X X

2.1

1

X

X

1

Zygoribatula sp.

X

X

1

X

X

X

Phauloppia lucorum (Koch, 1841)

2.1

X X

X

Nothrus pratensis Sellnick, 1928

1

Peat

X

X

2.1

Scutovertex sculptus Michael, 1879

X

X

2.1

X

X

X

1

X

X

X

1

X

X

X

Nothrus anauniensis Canestrini & Fanzao, 1876

X

RG

X X

Limnozetes amnicus Behan-Pelletier, 1989

X

Forest C

X

X X

X

X X X

X X X X X
