Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/gcb.14119 |
Mass coral bleaching causes biotic homogenization of reef fish assemblages | |
Richardson, Laura E.1; Graham, Nicholas A. J.2; Pratchett, Morgan S.1; Eurich, Jacob G.1,3; Hoey, Andrew S.1 | |
2018-07-01 | |
发表期刊 | GLOBAL CHANGE BIOLOGY |
ISSN | 1354-1013 |
EISSN | 1365-2486 |
出版年 | 2018 |
卷号 | 24期号:7页码:3117-3129 |
文章类型 | Article |
语种 | 英语 |
国家 | Australia; England |
英文摘要 | Global climate change is altering community composition across many ecosystems due to nonrandom species turnover, typically characterized by the loss of specialist species and increasing similarity of biological communities across spatial scales. As anthropogenic disturbances continue to alter species composition globally, there is a growing need to identify how species responses influence the establishment of distinct assemblages, such that management actions may be appropriately assigned. Here, we use trait-based analyses to compare temporal changes in five complementary indices of reef fish assemblage structure among six taxonomically distinct coral reef habitats exposed to a system-wide thermal stress event. Our results revealed increased taxonomic and functional similarity of previously distinct reef fish assemblages following mass coral bleaching, with changes characterized by subtle, but significant, shifts toward predominance of small-bodied, algal-farming habitat generalists. Furthermore, while the taxonomic or functional richness of fish assemblages did not change across all habitats, an increase in functional originality indicated an overall loss of functional redundancy. We also found that prebleaching coral composition better predicted changes in fish assemblage structure than the magnitude of coral loss. These results emphasize how measures of alpha diversity can mask important changes in the structure and functioning of ecosystems as assemblages reorganize. Our findings also highlight the role of coral species composition in structuring communities and influencing the diversity of responses of reef fishes to disturbance. As new coral species configurations emerge, their desirability will hinge upon the composition of associated species and their capacity to maintain key ecological processes in spite of ongoing disturbances. |
英文关键词 | assemblage structure beta diversity climate change coral reefs coral species composition functional redundancy scales traits |
领域 | 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000437281500031 |
WOS关键词 | GREAT-BARRIER-REEF ; FUNCTIONAL HOMOGENIZATION ; TAXONOMIC HOMOGENIZATION ; EXTINCTION VULNERABILITY ; STRUCTURAL COMPLEXITY ; OCEAN ACIDIFICATION ; RESPONSE DIVERSITY ; BIODIVERSITY LOSS ; DISTURBANCES ; ANTHROPOCENE |
WOS类目 | Biodiversity Conservation ; Ecology ; Environmental Sciences |
WOS研究方向 | Biodiversity & Conservation ; Environmental Sciences & Ecology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/17596 |
专题 | 气候变化 资源环境科学 |
作者单位 | 1.James Cook Univ, ARC Ctr Excellence Coral Reef Studies, Townsville, Qld, Australia; 2.Univ Lancaster, Lancaster Environm Ctr, Lancaster, England; 3.James Cook Univ, Coll Sci & Engn, Townsville, Qld, Australia |
推荐引用方式 GB/T 7714 | Richardson, Laura E.,Graham, Nicholas A. J.,Pratchett, Morgan S.,et al. Mass coral bleaching causes biotic homogenization of reef fish assemblages[J]. GLOBAL CHANGE BIOLOGY,2018,24(7):3117-3129. |
APA | Richardson, Laura E.,Graham, Nicholas A. J.,Pratchett, Morgan S.,Eurich, Jacob G.,&Hoey, Andrew S..(2018).Mass coral bleaching causes biotic homogenization of reef fish assemblages.GLOBAL CHANGE BIOLOGY,24(7),3117-3129. |
MLA | Richardson, Laura E.,et al."Mass coral bleaching causes biotic homogenization of reef fish assemblages".GLOBAL CHANGE BIOLOGY 24.7(2018):3117-3129. |
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