Full-Text Search:
Home|Journal Papers|About CNKI|User Service|FAQ|Contact Us|中文
《Acta Zoologica Sinica》 2005-06
Add to Favorite Get Latest Update

Correlates of microhabitat use and density of Clethrionomys gapperi and Peromyscus keeni in temperate rain forests of Southeast Alaska

Winston P. SMITH 1** , Scott M. GENDE2, Jeffrey V. NICHOLS31. USDA Forest Service, Pacific Northwest Research Station, Forestry Sciences Laboratory, 2770 Sherwood Lane-Suite 2A, Juneau, Alaska 99801, USA 2. National Park Service, Glacier Bay Field Station, 3100 National Park Road, Juneau, Alaska 99801, USA 3. Alaska Department of Fish and Game, Sport Fish Division, 802 Third Street, Douglas, Alaska 99824, USA  
We studied red-backed vole Clethrionomys gapperi and Keen’s mouse Peromyscus keeni populations in the Alexander Archipelago to test predictions regarding habitat relations in temperate rain forest of southeastern Alaska during August-September 1998 and 2000 and April-May 1999 and 2000. We measured 26 vegetative and structural features to correlate abundance among and microhabitat use within gap-phase old growth, multi-cohort old growth, pre-commercially thinned young (23-yr-old) growth, and peatland mixed-conifer forests. Populations of both species were higher in 1998 than 1999 and 2000. Both species used microhabitats randomly in 1998, but were highly selective in 1999-2000. Correlates of microhabitat use varied between seasons and among habitats, but C.gapperi captures were most often positively correlated with the percent cover of deciduous shrubs in the understory. Microhabitats used by P.keeni had less moss cover on the forest floor, but in gap-phase were directly related to the probability of capturing a C.gapperi. Density of both species during both seasons was directly correlated with decayed downed wood in the understory. Density of P.keeni in spring explained 62% of the variation in C.gapperi density, which in turn explained 89% of the variation in P.keeni density. Our results corroborate the findings of earlier studies that P.keeni in southeastern Alaska flourishes in a variety of habitats, especially early seral forests; but, departed from the general conclusion that C.gapperi populations in western landscapes achieve their highest densities in late-seral coniferous forests. Unlike populations elsewhere in northwestern North America, C.gapperi may be able to persist in rain forest patches where the overstory has been removed. Peatland mixed-conifer forest contributed little to breeding populations of C.gapperi or P.keeni and thus is unlikely to mitigate any impacts of broad-scale clearcut logging of productive old-growth rainforests.
【Key Words】: Alexander Archipelago Clethrionomys gapperi Density Ecological correlates Habitat distribution Microhabitat use Peromyscus keeni Population ecology Southeast Alaska Temperate rain forest Wrangell Island
【Fund】: ThisresearchwasfundedfromtheUnitedStatesDepartmentofAgriculture ForestService AlaskaRegionandPacificNorthwestResearchStation.
【CateGory Index】: S718.5
Download(CAJ format) Download(PDF format)
CAJViewer7.0 supports all the CNKI file formats; AdobeReader only supports the PDF format.
【Co-references】
Chinese Journal Full-text Database 4 Hits
1 ZHONG Hua ① LAI Xu Long ② WEI Rong Ping ③ LIU Zhong Lai ①** (① College of Life Science,Central China Normal University,Wuhan 430079, China) (② Faculty of Earth Sciences,China University of Geosciences,Wuhan 430074, China) (③ China Conservation and Research Center for the Giant Panda,Wolong 623006, Sichuan, China);An improved protocol for DNA extraction from the faeces of the giant panda[J];Acta Zoologica Sinica;2003-05
2 ZHANG Bao Wei,WEI Fu Wen ** ,LI Ming,L U ·· Xiao Ping Institute of Zoology, the Chinese Academy of Sciences, Beijing 100080, China;A simple protocol for DNA extraction from faeces of the giant panda and lesser panda[J];Acta Zoologica Sinica;2004-03
3 LI Wan-shui,CHEN Song,TU Zheng/Institute of Forensic Sciences,Ministry of Public Security,Beijng 100038);DNA extraction from Human feces and analysis[J];Chinese Journal of Forensic Medicine;2004-04
4 LI Na, LI Di-qiang, WANG Xiu-lei, LIU Yi . (The Veterinary Medicine College of hunan Agricultural University ,Changsha 410128;Institute of Forest Ecology, Environment and Protection, Chinese Academy of Forestry, Beijing 100091 , P. R. China);The Effect of Different Preservation Methods of Faeces on Genomic DNA Extraction from Animal[J];International Journal of Genetics;2006-05
©2006 Tsinghua Tongfang Knowledge Network Technology Co., Ltd.(Beijing)(TTKN) All rights reserved