Loading...
Please wait, while we are loading the content...
Similar Documents
Habitat Partitioning by the Wolf Spider ( Araneae , Lycosidae ) Guild in Streamsid E and Riparian Vegetation Zones of the Conejos River , Colorado
| Content Provider | Semantic Scholar |
|---|---|
| Author | Moring, James B. Stewart, Kenneth W. |
| Copyright Year | 2004 |
| Abstract | Members of a guild of cursorial spiders (Pardosa spp . and Alopecosa spp .) spatially segregate among five discrete habitats, ranging from a streamside cobble habitat extending laterally along a successiona l gradient to the leaf litter zone of a transition or climax high elevation (2348 m) riparian coniferous forest i n Colorado. Seasonal activity peaked in midsummer for all guild members . Spiders were diurnally active earlier in streamside habitats, and levels of activity were positively correlated with light intensity . Guild members Pardosa tristis and P . uncata were most different in habitat selection and periods of diurnal activity . Males and females of all guild species differed in their distribution among habitats and over months of collection. Measure s of guild species diversity and evenness were variable between habitats, and were largely influenced by th e relatively high abundance of one or two guild species, particularly in the streamside habitats . Several workers have reported that vegetativ e diversity and structural complexity are important determinants of spider community structure (Luczak 1959, 1963 ; Duffey 1966, 1970 ; Hatley & MacMahon 1980 ; Bultman et al . 1982 ; Abraham 1983; Greenstone 1984 ; Rypstra 1986; Uet z 1991), yet little is known about species composition or diversity of spiders associated with individual forest stands, forest stand types, or forest communities in North America (Jennings e t al . 1988) . The relatively open-canopied river ecosystem s of western North America typically have an unvegetated streamside zone characterized by erosional or depositional materials, grading laterally into floodplain successional zones culminating in a transition or climax riparian forest. Because of the biological and physical differences of these zones and the probable species-specific differences in habitat, trophic, and reproduction requirements of spiders, we expected to find a partitioning of the available microhabitats in thes e |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://americanarachnology.org/joa_free/joa_v22_n3/joa_v22_p205.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
