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| DOI | 10.1002/ece3.10930 |
| Potential extinction cascades in a desert ecosystem: Linking food web interactions to community viability | |
| 发表日期 | 2024 |
| ISSN | 2045-7758 |
| 起始页码 | 14 |
| 结束页码 | 2 |
| 卷号 | 14期号:2 |
| 英文摘要 | Desert communities are threatened with species loss due to climate change, and their resistance to such losses is unknown. We constructed a food web of the Mojave Desert terrestrial community (300 nodes, 4080 edges) to empirically examine the potential cascading effects of bird extinctions on this desert network, compared to losses of mammals and lizards. We focused on birds because they are already disappearing from the Mojave, and their relative thermal vulnerabilities are known. We quantified bottom-up secondary extinctions and evaluated the relative resistance of the community to losses of each vertebrate group. The impact of random bird species loss was relatively low compared to the consequences of mammal (causing the greatest number of cascading losses) or reptile loss, and birds were relatively less likely to be in trophic positions that could drive top-down effects in apparent competition and tri-tropic cascade motifs. An avian extinction cascade with year-long resident birds caused more secondary extinctions than the cascade involving all bird species for randomized ordered extinctions. Notably, we also found that relatively high interconnectivity among avian species has formed a subweb, enhancing network resistance to bird losses. This study explores the potential cascading effects of bird extinctions on the Mojave Desert terrestrial community compared to losses of mammals and lizards. Bird species, which are already disappearing from the area, showed relatively low impacts on the modeled network compared to mammal or reptile loss. Avian extinction cascades with year-long resident birds resulted in more secondary extinctions than cascades involving all bird species, with the network's high interconnectivity among avian species enhancing comparative resistance to bird losses.image |
| 英文关键词 | biodiversity; climate change; community viability analysis; CVA; ecological networks; Mojave Desert; secondary extinction; trophic cascade |
| 语种 | 英语 |
| WOS研究方向 | Environmental Sciences & Ecology ; Evolutionary Biology |
| WOS类目 | Ecology ; Evolutionary Biology |
| WOS记录号 | WOS:001162535300001 |
| 来源期刊 | ECOLOGY AND EVOLUTION
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/287156 |
| 作者单位 | Tufts University; University of Tennessee System; University of Tennessee Knoxville; Tufts University |
| 推荐引用方式 GB/T 7714 | . Potential extinction cascades in a desert ecosystem: Linking food web interactions to community viability[J],2024,14(2). |
| APA | (2024).Potential extinction cascades in a desert ecosystem: Linking food web interactions to community viability.ECOLOGY AND EVOLUTION,14(2). |
| MLA | "Potential extinction cascades in a desert ecosystem: Linking food web interactions to community viability".ECOLOGY AND EVOLUTION 14.2(2024). |
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