Extinction debt in lake fish due to river–lake disconnection
After habitat loss and fragmentation, some species may persist for some period, but eventually become extinct, resulting in the so-called extinction debt. Understanding extinction debt can help depict biodiversity change processes and prevent underestimating biodiversity loss in conservation practic...
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| Format: | Article |
| Language: | English |
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Elsevier
2024-12-01
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| Series: | Ecological Indicators |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S1470160X24013694 |
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| author | Yuan Yuan Zhijun Xia Mingzheng Li Tao Chang Kunyu Shang Dekui He Pengcheng Lin Xin Gao |
| author_facet | Yuan Yuan Zhijun Xia Mingzheng Li Tao Chang Kunyu Shang Dekui He Pengcheng Lin Xin Gao |
| author_sort | Yuan Yuan |
| collection | DOAJ |
| description | After habitat loss and fragmentation, some species may persist for some period, but eventually become extinct, resulting in the so-called extinction debt. Understanding extinction debt can help depict biodiversity change processes and prevent underestimating biodiversity loss in conservation practices. River-lake disconnection has reduced fish diversity in lakes within the middle and lower Yangtze River basin, and may cause extinction debt as well after river–lake disconnection, which has not been noticed so far. This study collected fish species occurrence data from the 1950s to 2020, along with data on lake area and disconnection time. Taxonomic (TD), functional (FD), and phylogenetic (PD) diversity indices were calculated and analyzed to test the hypothesis using three methods: time series analysis, equilibrium methods, and past habitat analysis. The results showed that extinction debt was detected in TD across all methods, whereas FD did not exhibit extinction debt and PD demonstrated the presence of extinction debt by time series analysis. Furthermore, the decline in TD correlated with both lake area and disconnection time, while PD decline was associated with disconnection time. These results revealed extinction debt in the taxonomic and phylogenetic diversity of fish due to river–lake disconnection, but not in functional traits. Our findings provided empirical evidence of extinction debt and emphasize the importance of considering long-term species loss when assessing the cumulative impacts of habitat loss and fragmentation. |
| format | Article |
| id | doaj-art-ee64e8d6bffd4504a3463ba4a2860fd8 |
| institution | DOAJ |
| issn | 1470-160X |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Ecological Indicators |
| spelling | doaj-art-ee64e8d6bffd4504a3463ba4a2860fd82025-08-20T02:49:04ZengElsevierEcological Indicators1470-160X2024-12-0116911291210.1016/j.ecolind.2024.112912Extinction debt in lake fish due to river–lake disconnectionYuan Yuan0Zhijun Xia1Mingzheng Li2Tao Chang3Kunyu Shang4Dekui He5Pengcheng Lin6Xin Gao7Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR ChinaInstitute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR ChinaInstitute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR ChinaInstitute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR ChinaInstitute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR ChinaInstitute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR ChinaInstitute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China; Research Center for Yangtze River Ecological and Environmental Engineering, China Three Gorges Corporation, Beijing 100038, PR China; Corresponding authors at: No. 7 Donghu South Road, Wuhan, Hubei Province 430072, PR China.Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China; Corresponding authors at: No. 7 Donghu South Road, Wuhan, Hubei Province 430072, PR China.After habitat loss and fragmentation, some species may persist for some period, but eventually become extinct, resulting in the so-called extinction debt. Understanding extinction debt can help depict biodiversity change processes and prevent underestimating biodiversity loss in conservation practices. River-lake disconnection has reduced fish diversity in lakes within the middle and lower Yangtze River basin, and may cause extinction debt as well after river–lake disconnection, which has not been noticed so far. This study collected fish species occurrence data from the 1950s to 2020, along with data on lake area and disconnection time. Taxonomic (TD), functional (FD), and phylogenetic (PD) diversity indices were calculated and analyzed to test the hypothesis using three methods: time series analysis, equilibrium methods, and past habitat analysis. The results showed that extinction debt was detected in TD across all methods, whereas FD did not exhibit extinction debt and PD demonstrated the presence of extinction debt by time series analysis. Furthermore, the decline in TD correlated with both lake area and disconnection time, while PD decline was associated with disconnection time. These results revealed extinction debt in the taxonomic and phylogenetic diversity of fish due to river–lake disconnection, but not in functional traits. Our findings provided empirical evidence of extinction debt and emphasize the importance of considering long-term species loss when assessing the cumulative impacts of habitat loss and fragmentation.http://www.sciencedirect.com/science/article/pii/S1470160X24013694Extinction debtFishRiver-lake disconnectionSpecies diversity |
| spellingShingle | Yuan Yuan Zhijun Xia Mingzheng Li Tao Chang Kunyu Shang Dekui He Pengcheng Lin Xin Gao Extinction debt in lake fish due to river–lake disconnection Ecological Indicators Extinction debt Fish River-lake disconnection Species diversity |
| title | Extinction debt in lake fish due to river–lake disconnection |
| title_full | Extinction debt in lake fish due to river–lake disconnection |
| title_fullStr | Extinction debt in lake fish due to river–lake disconnection |
| title_full_unstemmed | Extinction debt in lake fish due to river–lake disconnection |
| title_short | Extinction debt in lake fish due to river–lake disconnection |
| title_sort | extinction debt in lake fish due to river lake disconnection |
| topic | Extinction debt Fish River-lake disconnection Species diversity |
| url | http://www.sciencedirect.com/science/article/pii/S1470160X24013694 |
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