DOI: 10.1016/j.foreco.2017.02.034
Scopus记录号: 2-s2.0-85013627735
论文题名: Management implications of bird responses to variation in non-native/native tree ratios within central European forest stands
作者: Kroftová M. ; Reif J.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2017
卷: 391 起始页码: 330
结束页码: 337
语种: 英语
英文关键词: Biological invasions
; Birds
; Diversity
; Exotic species
; Forest management
; Niche breadth
Scopus关键词: Biodiversity
; Birds
; Conservation
; Ecosystems
; Food supply
; Vegetation
; Biological invasion
; Bird community compositions
; Central European forests
; Conditional autoregressive models
; Diversity
; Exotic species
; Management implications
; Niche breadth
; Forestry
; biodiversity
; biological invasion
; bird
; community composition
; deciduous tree
; forest edge
; forest management
; generalist
; invasive species
; native species
; niche breadth
; species diversity
; species richness
; stand dynamics
; Europe
; Aves
; Robinia pseudoacacia
英文摘要: Plant invasions are a serious threat for global biodiversity and various studies have reported their impacts on forest bird populations. However, a majority of these studies involved comparisons of sites covered solely by invaded or native forest habitats, whereas the real world is dominated by habitat gradients. To address this issue, we counted birds in central European forest stands differing in the coverage of an invasive woody plant, Robinia pseudoacacia L., a major global tree invader. This species significantly affects the vegetation composition in invaded habitats, resulting in shifts in bird community compositions toward a dominance of generalist species at the expense of specialists. Here we ask: (i) how the bird species richness changes with the increasing relative coverage of R. pseudoacacia, recognizing several bird groups represented by all species, habitat specialists, habitat generalists and forest specialists, (ii) to what extent the alteration of vegetation composition accounts for these changes. By employing conditional autoregressive models, and by taking forest stand area and distance to the forest edge into account, we found that the numbers of all bird species, habitat specialists and forest specialists were highest in stands with intermediate coverage of R. pseudoacacia. This result indicates that the non-native tree was not detrimental for bird biodiversity, and that birds indeed benefited from its presence in focal forest stands, but only if native and non-native trees were present in approximately equal proportions, which was particularly true for forest specialists. The effect of R. pseudoacacia on bird species richness was significant even after taking changes in vegetation composition into account, suggesting that this invasive species affects birds not only by altering structural components of the habitat, but also by some other factors that might include food supply for birds or nest-holes. Our sampling was quite limited, particularly with respect to the range of structures and management types typically encountered in native trees, and results must be treated accordingly. However, our results appear to suggest that eradication of R. pseudoacacia from forest within our study area may not be necessary for achieving bird conservation aims, because this species does not markedly depress bird species richness, including specialists. However, the generality of our findings require further testing across other forests affected by R. pseuadoacacia invasion, to examine whether retention of this non-native tree is more widely justified. © 2017 Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/64409
Appears in Collections: 影响、适应和脆弱性
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作者单位: Institute for Environmental Studies, Faculty of Science, Charles University, Prague, Benátská 2, Czech Republic
Recommended Citation:
Kroftová M.,Reif J.. Management implications of bird responses to variation in non-native/native tree ratios within central European forest stands[J]. Forest Ecology and Management,2017-01-01,391