Impact of hydrological processes on the benthic macroinvertebrate biodiversity in floodplain wetlands: A regional study of Poyang lake
Study region: Poyang Lake, China's largest freshwater lake and a renowned floodplain wetland, is enlisted in the Ramsar Convention. Study focus: The hydrological process (HP), a vital part of the hydrological regime, notably affects biodiversity patterns in floodplain wetlands. However, the pat...
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2025-08-01
|
| Series: | Journal of Hydrology: Regional Studies |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214581825003349 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849731662741504000 |
|---|---|
| author | Siyang Yao Xinyuan Liu Jutao Liu Siyu Wan |
| author_facet | Siyang Yao Xinyuan Liu Jutao Liu Siyu Wan |
| author_sort | Siyang Yao |
| collection | DOAJ |
| description | Study region: Poyang Lake, China's largest freshwater lake and a renowned floodplain wetland, is enlisted in the Ramsar Convention. Study focus: The hydrological process (HP), a vital part of the hydrological regime, notably affects biodiversity patterns in floodplain wetlands. However, the pathways through which hydrological process impacts the benthic macroinvertebrate biodiversity remain ambiguous. New hydrological insights for the region: Across the rising, flooding, and falling water level stages, HP indicators exhibited diverse relationships with biodiversity. During the rising and falling stages, the relationship manifested as an inverted U-shaped trend; in the flooding stage, the biodiversity exhibited a U-shaped decreasing trend. The impact of HPs on biodiversity was complex. In the rising stage, the HP exerted a direct influence on biodiversity, with a path coefficient of −0.633. Additionally, it indirectly affected biodiversity through water quality indicators, with an indirect path coefficient of −0.773. In the flooding stage, the HP exerted an indirect influence on biodiversity via water temperature and landscape indicators, with the corresponding path coefficients of 0.185 and −0.367, respectively. During the falling stage, the HP directly affected biodiversity, as indicated by a path coefficient of −0.564, and also indirectly influenced it through water temperature, with an indirect path coefficient of −0.799. Overall, the indirect effect was more prominent in the rising and falling stages, while the direct impact was insignificant in the flooding stage. |
| format | Article |
| id | doaj-art-a4d12e7b27594988bbb2a7986990cac7 |
| institution | DOAJ |
| issn | 2214-5818 |
| language | English |
| publishDate | 2025-08-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Hydrology: Regional Studies |
| spelling | doaj-art-a4d12e7b27594988bbb2a7986990cac72025-08-20T03:08:28ZengElsevierJournal of Hydrology: Regional Studies2214-58182025-08-016010250910.1016/j.ejrh.2025.102509Impact of hydrological processes on the benthic macroinvertebrate biodiversity in floodplain wetlands: A regional study of Poyang lakeSiyang Yao0Xinyuan Liu1Jutao Liu2Siyu Wan3Jiangxi Academy of Water Science and Engineering, Nanchang 330029, China; State Key Laboratory of Lake and Watershed Science for Water Security, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China; Jiangxi Provincial Technology Innovation Center for Ecological Water Engineering in Poyang Lake Basin, Nanchang 330029, ChinaJiangxi Academy of Water Science and Engineering, Nanchang 330029, China; Jiangxi Provincial Technology Innovation Center for Ecological Water Engineering in Poyang Lake Basin, Nanchang 330029, ChinaJiangxi Academy of Water Science and Engineering, Nanchang 330029, China; Jiangxi Provincial Technology Innovation Center for Ecological Water Engineering in Poyang Lake Basin, Nanchang 330029, China; Corresponding author at: Jiangxi Academy of Water Science and Engineering, Nanchang 330029, China.Nanchang Institute of Science and Technology, Nanchang 330108, ChinaStudy region: Poyang Lake, China's largest freshwater lake and a renowned floodplain wetland, is enlisted in the Ramsar Convention. Study focus: The hydrological process (HP), a vital part of the hydrological regime, notably affects biodiversity patterns in floodplain wetlands. However, the pathways through which hydrological process impacts the benthic macroinvertebrate biodiversity remain ambiguous. New hydrological insights for the region: Across the rising, flooding, and falling water level stages, HP indicators exhibited diverse relationships with biodiversity. During the rising and falling stages, the relationship manifested as an inverted U-shaped trend; in the flooding stage, the biodiversity exhibited a U-shaped decreasing trend. The impact of HPs on biodiversity was complex. In the rising stage, the HP exerted a direct influence on biodiversity, with a path coefficient of −0.633. Additionally, it indirectly affected biodiversity through water quality indicators, with an indirect path coefficient of −0.773. In the flooding stage, the HP exerted an indirect influence on biodiversity via water temperature and landscape indicators, with the corresponding path coefficients of 0.185 and −0.367, respectively. During the falling stage, the HP directly affected biodiversity, as indicated by a path coefficient of −0.564, and also indirectly influenced it through water temperature, with an indirect path coefficient of −0.799. Overall, the indirect effect was more prominent in the rising and falling stages, while the direct impact was insignificant in the flooding stage.http://www.sciencedirect.com/science/article/pii/S2214581825003349Hydrological processBenthic macroinvertebrate biodiversityFloodplain wetlandStructural equation modelingPoyang lake |
| spellingShingle | Siyang Yao Xinyuan Liu Jutao Liu Siyu Wan Impact of hydrological processes on the benthic macroinvertebrate biodiversity in floodplain wetlands: A regional study of Poyang lake Journal of Hydrology: Regional Studies Hydrological process Benthic macroinvertebrate biodiversity Floodplain wetland Structural equation modeling Poyang lake |
| title | Impact of hydrological processes on the benthic macroinvertebrate biodiversity in floodplain wetlands: A regional study of Poyang lake |
| title_full | Impact of hydrological processes on the benthic macroinvertebrate biodiversity in floodplain wetlands: A regional study of Poyang lake |
| title_fullStr | Impact of hydrological processes on the benthic macroinvertebrate biodiversity in floodplain wetlands: A regional study of Poyang lake |
| title_full_unstemmed | Impact of hydrological processes on the benthic macroinvertebrate biodiversity in floodplain wetlands: A regional study of Poyang lake |
| title_short | Impact of hydrological processes on the benthic macroinvertebrate biodiversity in floodplain wetlands: A regional study of Poyang lake |
| title_sort | impact of hydrological processes on the benthic macroinvertebrate biodiversity in floodplain wetlands a regional study of poyang lake |
| topic | Hydrological process Benthic macroinvertebrate biodiversity Floodplain wetland Structural equation modeling Poyang lake |
| url | http://www.sciencedirect.com/science/article/pii/S2214581825003349 |
| work_keys_str_mv | AT siyangyao impactofhydrologicalprocessesonthebenthicmacroinvertebratebiodiversityinfloodplainwetlandsaregionalstudyofpoyanglake AT xinyuanliu impactofhydrologicalprocessesonthebenthicmacroinvertebratebiodiversityinfloodplainwetlandsaregionalstudyofpoyanglake AT jutaoliu impactofhydrologicalprocessesonthebenthicmacroinvertebratebiodiversityinfloodplainwetlandsaregionalstudyofpoyanglake AT siyuwan impactofhydrologicalprocessesonthebenthicmacroinvertebratebiodiversityinfloodplainwetlandsaregionalstudyofpoyanglake |