Two new species of the subgenus Oxyporus of the genus Oxyporus Fabricius,1775,Oxyporus(Oxyporus)jiangi sp.nov.and O.(O.)wenchuanus sp.nov.from Wolong Natural Reserve,Sichuan Province,China,are described.Thus,the speci...Two new species of the subgenus Oxyporus of the genus Oxyporus Fabricius,1775,Oxyporus(Oxyporus)jiangi sp.nov.and O.(O.)wenchuanus sp.nov.from Wolong Natural Reserve,Sichuan Province,China,are described.Thus,the species of the genus Oxyporus is up to 133 worldwide.Images of the dosal habitus and male sexual characters of the new species are provided.A key to the species of subgenus Oxyporus of Sichuan Province is provided.All type specimens are deposited in College of Life Science,China West Normal University,Sichuan.展开更多
From July to September in 2005,the resources of Staphylinidae in four types of human disturbance regions( human gathering area,grain for green region,grazing region and rare disturbance region) in Erlang Mountain,Sich...From July to September in 2005,the resources of Staphylinidae in four types of human disturbance regions( human gathering area,grain for green region,grazing region and rare disturbance region) in Erlang Mountain,Sichuan were investigated,and the individual number,species composition and diversity characteristics were analyzed. The result showed that the individual number,species diversity index( H') and the evenness index( J) decreased with the decreasing intensity of human disturbance. The species diversity index and the evenness index in human gathering area were the highest of 4. 001 6 and 0. 850 2,respectively. Simpson predominant index( λ) enhanced with the decreasing intensity of human disturbance,which reached the peak of 0. 199 6 in rare disturbance region. The community similarity index β of Staphylinidae at different human disturbance regions ranged from 0- 0. 25,indicating that the species compositions were extremely different among this four types of regions. Based on these results,it was found that human activities were closely related to individuals number and species diversity of Staphylinidae in Erlang Mountain,and human disturbance may add habitat heterogeneity and facilitate to the species diversity of Staphylinidae communities.展开更多
Disentangling the relative roles of environmental and spatial processes in community assembly is a major task of community ecology.It is necessary to uncover this question at multiple spatial scales;however,the relati...Disentangling the relative roles of environmental and spatial processes in community assembly is a major task of community ecology.It is necessary to uncover this question at multiple spatial scales;however,the relative importance of spatial and environmental processes on ground-dwelling beetle assembly at a small scale is still unclear.Based on two permanent plots(each 300 m)located in primary mixed broadleaved-Korean pine forests,the topographic,soil,and plant factors were collected,and the spatial variables(MEMs,distancebased Moran’s eigenvector maps)were calculated.A redundancy analysis(RDA)was used to evaluate the influence of topographic,soil,and plant variables on ground-dwelling beetle compositions.A variation partitioning analysis was used to quantify the relative contributions of environmental and spatial processes on the assembly of ground-dwelling beetles.The results of the RDA reported that the soil,plant,and topographic variables affected Staphylinidae and Silphidae beetle compositions in both plots.According to the results of variation partitioning,pure soil and plant variables were important for the assembly of Silphidae beetles in the LS plot.The contributions of pure topographic,soil,and plant variables were significantly lower than those of pure spatial variables.The contributions of pure spatial variables were significant for the assembly of Staphylinidae and Silphidae beetles in both plots.In addition,the relative importance of environmental and spatial processes was not significantly changed after including more environmental variables and the unexplained variations.Finally,this study suggests that both spatial and environmental variables are important for the assembly of ground-dwelling beetle communities,while pure spatial variables are more important than pure environmental variables at a small scale(300 m).展开更多
基金supported by China West Normal University(17YC352)
文摘Two new species of the subgenus Oxyporus of the genus Oxyporus Fabricius,1775,Oxyporus(Oxyporus)jiangi sp.nov.and O.(O.)wenchuanus sp.nov.from Wolong Natural Reserve,Sichuan Province,China,are described.Thus,the species of the genus Oxyporus is up to 133 worldwide.Images of the dosal habitus and male sexual characters of the new species are provided.A key to the species of subgenus Oxyporus of Sichuan Province is provided.All type specimens are deposited in College of Life Science,China West Normal University,Sichuan.
基金Supported by Open Fund of Ecological Environmental Research Center in the Chinese Academy of Sciences(SKLURE2011-2-3)Special Fund for Returned Overseas Students in China West Normal University(14B01)Project of HongK ong Ocean Park(HK09)
文摘From July to September in 2005,the resources of Staphylinidae in four types of human disturbance regions( human gathering area,grain for green region,grazing region and rare disturbance region) in Erlang Mountain,Sichuan were investigated,and the individual number,species composition and diversity characteristics were analyzed. The result showed that the individual number,species diversity index( H') and the evenness index( J) decreased with the decreasing intensity of human disturbance. The species diversity index and the evenness index in human gathering area were the highest of 4. 001 6 and 0. 850 2,respectively. Simpson predominant index( λ) enhanced with the decreasing intensity of human disturbance,which reached the peak of 0. 199 6 in rare disturbance region. The community similarity index β of Staphylinidae at different human disturbance regions ranged from 0- 0. 25,indicating that the species compositions were extremely different among this four types of regions. Based on these results,it was found that human activities were closely related to individuals number and species diversity of Staphylinidae in Erlang Mountain,and human disturbance may add habitat heterogeneity and facilitate to the species diversity of Staphylinidae communities.
基金supported by the National Natural Sciences Foundations of China(grant nos.41871042,41471037,41430857,and 41501263)by the Excellent Youth Scholars of Harbin Normal University(grant no.XKYQ201401)by the Program of Introducing Talents of Discipline to Universities(grant no.B16011).
文摘Disentangling the relative roles of environmental and spatial processes in community assembly is a major task of community ecology.It is necessary to uncover this question at multiple spatial scales;however,the relative importance of spatial and environmental processes on ground-dwelling beetle assembly at a small scale is still unclear.Based on two permanent plots(each 300 m)located in primary mixed broadleaved-Korean pine forests,the topographic,soil,and plant factors were collected,and the spatial variables(MEMs,distancebased Moran’s eigenvector maps)were calculated.A redundancy analysis(RDA)was used to evaluate the influence of topographic,soil,and plant variables on ground-dwelling beetle compositions.A variation partitioning analysis was used to quantify the relative contributions of environmental and spatial processes on the assembly of ground-dwelling beetles.The results of the RDA reported that the soil,plant,and topographic variables affected Staphylinidae and Silphidae beetle compositions in both plots.According to the results of variation partitioning,pure soil and plant variables were important for the assembly of Silphidae beetles in the LS plot.The contributions of pure topographic,soil,and plant variables were significantly lower than those of pure spatial variables.The contributions of pure spatial variables were significant for the assembly of Staphylinidae and Silphidae beetles in both plots.In addition,the relative importance of environmental and spatial processes was not significantly changed after including more environmental variables and the unexplained variations.Finally,this study suggests that both spatial and environmental variables are important for the assembly of ground-dwelling beetle communities,while pure spatial variables are more important than pure environmental variables at a small scale(300 m).
