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SPIDERS (ARANEAE) OF SIX SMALL PEATLANDS IN SOUTHERN ONTARIO OR SOUTHWESTERN QUEBEC

Published online by Cambridge University Press:  31 May 2012

Charles D. Dondale  and
James H. Redner
Charles D. Dondale
Affiliation:
Biological Resources Division (CLBRR), Agriculture Canada Research Branch, K.W. Neatby Building, Ottawa, Ontario, Canada K1A 0C6
James H. Redner
Affiliation:
Biological Resources Division (CLBRR), Agriculture Canada Research Branch, K.W. Neatby Building, Ottawa, Ontario, Canada K1A 0C6
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Abstract

Six small peatlands, comprising three bogs and three fens, were surveyed for spiders in southern Ontario or southwestern Quebec. Collections from the Mer Bleue bog contained representatives of 108 species (54.6% of the total), those from the Crieff fen 97 (49.0%), those from the Wylde Lake bog 77 (38.9%), those from the Oliver bog 76 (38.4%), those from the Richmond fen 59 (29.8%), and those from the Poltimore fen 49 species (24.8% of the total). The family Erigonidae had 24.8% of the total 198 species, Lycosidae had 11.1%, Linyphiidae had 10.6%, and Salticidae had 9.1%, Web-building species outnumbered hunting species by 118 to 80. The majority of species in these peatlands are wide-ranging litter inhabitants, about one-third are tree, shrub, or herb inhabitants, and one-tenth were found only in or on the surface of the peat itself. Nine of the last-named group appear to be restricted to bogs, but none appear to be restricted to fens.

Résumé

Les araignées ont été échantillonnées dans six petites tourbières, trois ombrotrophes et trois minérotrophes, du sud de l’Ontario et du sud-ouest du Québec. Les récoltes de la tourbière ombrotrophe Mer Bleue contenaient 108 espèces (54,6% du total), celles de la tourbière minérotrophe Crieff, 97 (49,0%), celles du lac Wylde, un lac de tourbière ombrotrophe, 77 (38,9%), celle de la tourbière ombrotrophe Oliver, 76 (38,4%), celle de la tourbière minérotrophe Richmond, 59 (29,8%) et celle de la tourbière minérotrophe Poltimore, 49 espèces (24,8% du total). Les Erigonidae représentaient 24,8% des 198 espèces récoltées, les Lycosidae, 11,1%, les Linyphiidae, 10,6% et les Salticidae, 9,1%. Les espèces qui construisent des toiles sont plus abondantes que les espèces chasseresses (118 vs 80). La majorité des espèces de ces milieux sont des organismes de litière à vaste répartition, environ un tiers habitent dans des arbres, des arbustes ou des herbes, et un dixième ne se retrouvent que dans la tourbe ou à sa surface : neuf d’entre elles sont restreintes aux tourbières ombrotrophes, mais aucune ne semble vivre exclusivement dans les tourbières minérotrophes. [Traduit par la Rédaction]

Type
Research Article
Information
The Memoirs of the Entomological Society of Canada , Volume 126 , Supplement S169 , 1994 , pp. 33 - 40
Copyright
Copyright © Entomological Society of Canada 1994

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References

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