TITLE:
Study on the Classification and Diversity of Zonal Rodent Community in Semi-Desert and Desert Areas of China
AUTHORS:
Xiaodong Wu, Heping Fu, Shuai Yuan, Quanrong Gao, Xiuxian Yue
KEYWORDS:
Rodent Community, Classification, Desert Ecosystem
JOURNAL NAME:
Open Journal of Ecology,
Vol.5 No.3,
March
5,
2015
ABSTRACT: Many studies focus on rodent community pattern and
changing at present in the world, but most of them are conducted in small
plots. Few studies investigated the rodent community classification and
diversity in semi-desert and desert areas at regional scale, although some researchers
started to study the change of animal community patterns on a large scale. We
investigated rodent communities in desert, non-irrigated farming land and
desert steppe of Inner Mongolia, covering an area of 380,000 km2 from May to August in 1988-1993 and in 1998-2003, respectively, in order to
reveal the changing characteristics of zonal rodent communities. The community
classification and diversity of rodents were analyzed in research areas. The
results suggested that the communities could be classified in 9 zonal types. Spermophilus dauricus, Cricetulus longicaudatus and Eutamias sibiricus were dominant species
in Community I; Phodopus roborovskii, Cricetulus barabansis and Cricetulus longicaudatus were dominant
in Community II; Meriones unguiculatus, Phodopus roborovskii and Cricetulus longicaudatus were dominant
in Community III; Allactaga sibirica, Allactaga bullata and Spermophilus dauricus were dominant in Community
IV; Allactaga bullata, Dipus sagitta and Meriones unguiculatus were dominant in Community V; Meriones meridianus, Spermophilus dauricus and Allactaga bullata were dominant in Community
VI; Allactaga sibirica, Allactaga bullata and Dipus sagitta were dominant in Community
VII; Phodopus roborovskii, Dipus sagitta and Allactaga sibirica were dominant in Community VIII; Meriones meridianus, Dipus sagitta and Allactaga sibirica were dominant in Community IX. The community
diversity and evenness analysis showed that the edge effect of community, the
effect of disturbance and habitat fragmentation and scale effect were
significantly correlated with community diversity in the semi-desert and desert
regions. The ordinal results of 9 zonal rodent communities were in accordance
with the results analyzed with similar community indices, showing the habitat
change in the characteristics of the above-mentioned groups.