Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.2307/1552128 |
Distribution, community structure, and microhabitats of soil invertebrates along an elevational gradient in Taylor Valley, Antarctica | |
Powers, LE; Ho, MC; Freckman, DW; Virginia, RA | |
通讯作者 | Powers, LE |
来源期刊 | ARCTIC AND ALPINE RESEARCH
![]() |
ISSN | 0004-0851 |
出版年 | 1998 |
卷号 | 30期号:2页码:133-141 |
英文摘要 | Soils in the Antarctic Dry Valleys have been significantly influenced by soil formation factors such as parent material, climate, and topography. Factors common in more temperate zones, including chemical weathering and leaching of minerals, occur to a much lesser extent in these cold arid soils, leading to an accumulation of salts and bases, which will likely affect the distribution of soil biota. Since the intensity of these factors may vary with topography, this study examined the soil properties and soil invertebrate communities along an elevational gradient in Taylor Valley, Antarctica. We sampled from two spatial scales (1 X 1 m and 10 X 10 m) at three sites (83, 121, and 188 m a.s.l) on the south side of Lake Hoare in Taylor Valley, and examined soil moisture, nitrogen, carbon, pH, and electrical conductivity (which provides an estimation of soil salinity), as well as the distribution and community structure of soil invertebrates. We found significant differences in soil properties with elevation, along with associated differences in soil communities. Biodiversity was greatest at the lowest elevation, closest to the shore of Lake Hoare, where soil moisture, carbon, and nitrogen were highest, and salinity was lowest. Scottnema lindsayae dominated the nematode communities found at all sites. Electrical conductivity was higher and carbon and nitrogen contents were lower at the upper elevations. The distribution of both Eudorylaimus and Plectus appeared to be influenced by soil moisture; electrical conductivity affected the mortality of all three nematode genera found. Soil properties did differ with sampling scale, suggesting that changes in microhabitats not detected at sampling intervals of a meter or more may be more reliably detected by sampling at a smaller scale. |
类型 | Article |
语种 | 英语 |
国家 | USA |
收录类别 | SCI-E |
WOS记录号 | WOS:000073952600005 |
WOS关键词 | DESERT ECOSYSTEM ; COLD-HARDINESS ; NEMATODES ; DIVERSITY ; WATER |
WOS类目 | Environmental Sciences ; Geography |
WOS研究方向 | Environmental Sciences & Ecology ; Geography |
来源机构 | Colorado State University |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/135362 |
作者单位 | (1)Eastern Mennonite Univ, Dept Biol, Harrisonburg, VA 22802 USA;(2)Harvard Univ, Sch Publ Hlth, Boston, MA 02115 USA;(3)Colorado State Univ, Nat Resource Ecol Lab, Ft Collins, CO 80523 USA;(4)Dartmouth Coll, Environm Studies Program, Hanover, NH 03755 USA |
推荐引用方式 GB/T 7714 | Powers, LE,Ho, MC,Freckman, DW,et al. Distribution, community structure, and microhabitats of soil invertebrates along an elevational gradient in Taylor Valley, Antarctica[J]. Colorado State University,1998,30(2):133-141. |
APA | Powers, LE,Ho, MC,Freckman, DW,&Virginia, RA.(1998).Distribution, community structure, and microhabitats of soil invertebrates along an elevational gradient in Taylor Valley, Antarctica.ARCTIC AND ALPINE RESEARCH,30(2),133-141. |
MLA | Powers, LE,et al."Distribution, community structure, and microhabitats of soil invertebrates along an elevational gradient in Taylor Valley, Antarctica".ARCTIC AND ALPINE RESEARCH 30.2(1998):133-141. |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。