02302nas a2200253   4500008004100000020001400041245008200055210006900137260000900206300001200215490000700227520151900234653002501753653007101778653004001849653001201889653001501901653002001916653001801936653000801954100002401962700002101986856004102007       2005                        eng d  a0096-378X00aSpider biodiversity at Oak Lake field station, Brookings County, South Dakota0 aSpider biodiversity at Oak Lake field station Brookings County S  c2005  a171-1800 v843 aA spider biodiversity study was conducted at Oak Lake Field Station, Brookings County, during the summers of 2003 and 2004 in order to collect and inventory spider families found in eastern South Dakota. Pitfall traps were set at nine site locations with the following categorized habitats: lakeside elevated woodland, midslope woodland, mesic meadow, xeric prairie, xeric exotic-grass prairie, and coniferous windbreak. A total of 1053 specimens were identified, representing 49 genera in the following 21 families: Agelenidae, Amaurobiidae, Araneidae, Clubionidae, Corinnidae, Cybaeidae, Dictynidae, Gnaphosidae, Linyphiidae, Liocranidae, Lycosidae, Micryphantidae, Nesticidae, Oxyopidae, Philodromidae, Pholcidae, Pisauridae, Salticidae, Tetragnathidae, Theridiidae, and Thomisidae. The ratio of males (47.2%) to females (47.4%) collected was near equal. The mesic meadow was sampled both years, and in 2004 the area was subjected to a prescribed burn resulting in a lower number of spiders collected and a lower diversity of spider families. The coniferous windbreak site yielded high numbers of wolf spiders (Lycosidae) relative to other sites. Combined data show a clear pattern in weekly capture rates, with numbers steadily decreasing throughout the summer. Nine families previously unrecorded from South Dakota were collected. The spider fauna of eastern South Dakota is considered incompletely inventoried, even at the family level, and continued efforts are expected to prove productive and informative.10aAraneae (Arachnida).10aAraneae [Ecology / / Biodiversity study] [South Dakota / Brookings10aCounty, Oak Lake Field Station / ].10aEcology10aLand zones10aNearctic region10aNorth America10aUSA1 aOkins, Katherine, E1 aJohnson, Paul, J  u<Go to ISI>://ZOOREC:ZOOR14210063168