Species abundance-distribution relationship: the differences among oak (Quercus liaotungensis Koidz) forest layers

• Autorzy: Feng Y. , Ma K. , Zhang Y. , Anand M. , He K.
• Języki publikacji: EN

Abstrakty

EN

Species abundance-distribution relationship is currently a hot topic in community ecology. Previous studies have suggested that a positive abundance-distribution relationship is a widespread feature of ecological assemblage across a wide variety of organisms, but how this relationship varies among different functional groups remains unclear. In this study, the species abundance-distribution relationship in the tree layer, shrub layer, and herb layer were analyzed respectively in an oak forest (Quercus liaotungensis Koidz.), Beijing region, China. Ten transects were set up from the foot to the top of every west slope to create a continuous altitude gradient (1020– 1770 m). The width of each transect was 10 m and the length of each transect ranged from 80–200 m, depending on the altitude range and slope degree. This study area consisted of 119 quadrats, each 10 × 10 m2. Within each quadrat, three sub-quadrats (1m × 1m) were randomly selected for the inventory of herb layer. Our results showed that the relationship between local species abundance and the regional distribution was significantly positive while the frequency distribution was unimodal in the three layers, indicating that locally abundant species were widely spread whereas locally rare species had restricted regional distributions. Variance partitioning of species abundance showed that the contribution of environmental variation and spatial variation to regulating the species abundance-distribution relationship of different layers are different: the pure geographical variation decreased and the pure soil variation increased in the order of tree layer, shrub layer, to herb layer, while the response due to total soil variation was similar in all three layer communities. The distribution of tree layer and shrub layer are mainly influenced by large-scale factors while herb layer distribution is more likely determined by local-scale factors.

Słowa kluczowe

EN

oak; Quercus liaotungensis; oak forest; species distribution; forest layer; shrub layer; herb layer; spatial heterogeneity; variation partitioning; community ecology

• Wydawca: -
• Czasopismo: Polish Journal of Ecology
• Rocznik: 2011
• Tom: 59
• Numer: 1
• Opis fizyczny: p.55-62,fig.,ref.

Twórcy

autor

Feng Y.

• State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Science, Beijing 100085, China

autor

Ma K.

autor

Zhang Y.

autor

Anand M.

autor

He K.

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