Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/gcb.14090 |
Anthropogenic disturbance homogenizes seagrass fish communities | |
Iacarella, Josephine C.1; 39;Connor, Mary I.2 | |
2018-05-01 | |
发表期刊 | GLOBAL CHANGE BIOLOGY |
ISSN | 1354-1013 |
EISSN | 1365-2486 |
出版年 | 2018 |
卷号 | 24期号:5页码:1904-1918 |
文章类型 | Article |
语种 | 英语 |
国家 | Canada |
英文摘要 | Anthropogenic activities have led to the biotic homogenization of many ecological communities, yet in coastal systems this phenomenon remains understudied. In particular, activities that locally affect marine habitat-forming foundation species may perturb habitat and promote species with generalist, opportunistic traits, in turn affecting spatial patterns of biodiversity. Here, we quantified fish diversity in seagrass communities across 89 sites spanning 6 degrees latitude along the Pacific coast of Canada, to test the hypothesis that anthropogenic disturbances homogenize (i.e., lower beta-diversity) assemblages within coastal ecosystems. We test for patterns of biotic homogenization at sites within different anthropogenic disturbance categories (low, medium, and high) at two spatial scales (within and across regions) using both abundance- and incidence-based beta-diversity metrics. Our models provide clear evidence that fish communities in high anthropogenic disturbance seagrass areas are homogenized relative to those in low disturbance areas. These results were consistent across within-region comparisons using abundance- and incidence-based measures of beta-diversity, and in across-region comparisons using incidence-based measures. Physical and biotic characteristics of seagrass meadows also influenced fish beta-diversity. Biotic habitat characteristics including seagrass biomass and shoot density were more differentiated among high disturbance sites, potentially indicative of a perturbed environment. Indicator species and trait analyses revealed fishes associated with low disturbance sites had characteristics including stenotopy, lower swimming ability, and egg guarding behavior. Our study is the first to show biotic homogenization of fishes across seagrass meadows within areas of relatively high human impact. These results support the importance of targeting conservation efforts in low anthropogenic disturbance areas across land- and seascapes, as well as managing anthropogenic impacts in high activity areas. |
英文关键词 | anthropogenic impact beta-diversity biotic homogenization community turnover marine fishes nearshore seagrass species richness |
领域 | 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000428879800008 |
WOS关键词 | BIOTIC HOMOGENIZATION ; BETA-DIVERSITY ; THREESPINE STICKLEBACK ; SPECIES ASSEMBLAGES ; NUTRIENT ENRICHMENT ; BIRD COMMUNITIES ; ZOSTERA-MARINA ; NURSERY ROLE ; NULL MODEL ; FOOD WEBS |
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/17483 |
专题 | 气候变化 资源环境科学 |
作者单位 | 1.Univ Victoria, Dept Biol, Victoria, BC, Canada; 2.Univ British Columbia, Dept Zool, Vancouver, BC, Canada; 3.Comox Valley Project Watershed Soc, Courtenay, BC, Canada; 4.Gulf Isl Natl Pk Reserve Canada, Sidney, BC, Canada; 5.Hakai Inst, Vancouver, BC, Canada; 6.Univ British Columbia, Inst Ocean & Fisheries, Vancouver, BC, Canada; 7.Univ British Columbia, Dept Earth Ocean & Atmospher Sci, Vancouver, BC, Canada; 8.Cooper Beauchesne & Associates Ltd, Qualicum Beach, BC, Canada; 9.Univ Victoria, Dept Geog, Victoria, BC, Canada; 10.Pacific Rim Natl Pk Reserve Canada, Ucluelet, BC, Canada |
推荐引用方式 GB/T 7714 | Iacarella, Josephine C.,39;Connor, Mary I.. Anthropogenic disturbance homogenizes seagrass fish communities[J]. GLOBAL CHANGE BIOLOGY,2018,24(5):1904-1918. |
APA | Iacarella, Josephine C.,&39;Connor, Mary I..(2018).Anthropogenic disturbance homogenizes seagrass fish communities.GLOBAL CHANGE BIOLOGY,24(5),1904-1918. |
MLA | Iacarella, Josephine C.,et al."Anthropogenic disturbance homogenizes seagrass fish communities".GLOBAL CHANGE BIOLOGY 24.5(2018):1904-1918. |
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