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Liu Y, Yan Y, Lin L, Wang L, Zhang Y, Kang B. Prioritizing the multifaceted community and species uniqueness for the conservation of lacustrine fishes in the largest subtropical floodplain, China. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 363:121301. [PMID: 38850912 DOI: 10.1016/j.jenvman.2024.121301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2023] [Revised: 05/19/2024] [Accepted: 05/30/2024] [Indexed: 06/10/2024]
Abstract
Hydrological variations affect habitat characteristics and fish distribution in floodplain lakes. Assessing the contributions of the local community (i.e., LCBD, community uniqueness) and species to overall β diversity (i.e., SCBD, species uniqueness) of fish assemblages is valuable for habitat and species conservation planning, particularly from functional and phylogenetic perspectives. We examined the changes in multifaceted LCBD and SCBD of fish across different hydrological periods in the Poyang Lake, China, and analyzed their responsive mechanisms using regression models, based on which the conservation priorities of habitats and species were evaluated. The findings revealed that taxonomic, functional, and phylogenetic LCBD and SCBD were lowest during the wet season compared to the normal and dry seasons, emphasizing the regulatory effects of hydrological regimes on fish assemblages. Taxonomic and functional LCBD were significantly impacted by the mean abundance of migratory fish, highlighting the importance of specific species combinations on community uniqueness. Taxonomic and functional SCBD exhibited positive correlations primarily with mean abundance, suggesting the potential uniqueness of certain common species. Additionally, we identified the river-lake junction (Hukou station) and natural reserve (Xingzi and Nanjishan stations) with high overall community uniqueness as critical habitats. We also emphasized the necessity for increased conservation efforts for species having high overall species uniqueness during different hydrological periods, including Coilia brachygnathus, Ctenopharyngodon idella, Coilia nasus, Saurogobio dabryi, Hypophthalmichthys molitrix, Megalobrama amblycephala, and Parabramis pekinensis. This research underscores the significance of integrating multiple ecological perspectives to manage biodiversity changes and maintain ecological conservation values effectively.
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Affiliation(s)
- Yang Liu
- Key Laboratory of Mariculture (Ocean University of China), Ministry of Education, Qingdao, 266003, Shandong, China; Fisheries College, Ocean University of China, Qingdao, 266003, China
| | - Yang Yan
- Key Laboratory of Mariculture (Ocean University of China), Ministry of Education, Qingdao, 266003, Shandong, China; Fisheries College, Ocean University of China, Qingdao, 266003, China
| | - Li Lin
- Key Laboratory of Mariculture (Ocean University of China), Ministry of Education, Qingdao, 266003, Shandong, China; Fisheries College, Ocean University of China, Qingdao, 266003, China; Department of Animal Husbandry and Fisheries, Guizhou Vocational College of Agriculture, Guiyang, 550000, Guizhou, China
| | - Linlong Wang
- Key Laboratory of Mariculture (Ocean University of China), Ministry of Education, Qingdao, 266003, Shandong, China; Fisheries College, Ocean University of China, Qingdao, 266003, China
| | - Yanping Zhang
- Department of Fishery Resources, Jiangxi Fisheries Research Institute, Nanchang, 330000, Jiangxi, China
| | - Bin Kang
- Key Laboratory of Mariculture (Ocean University of China), Ministry of Education, Qingdao, 266003, Shandong, China; Fisheries College, Ocean University of China, Qingdao, 266003, China.
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Chen C, Yin G, Hou L, Jiang Y, Sun D, Liang X, Han P, Zheng Y, Liu M. Reclamation of tidal flats to paddy soils reshuffles the soil microbiomes along a 53-year reclamation chronosequence: Evidence from assembly processes, co-occurrence patterns and multifunctionality. ENVIRONMENT INTERNATIONAL 2023; 179:108151. [PMID: 37603994 DOI: 10.1016/j.envint.2023.108151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Revised: 07/17/2023] [Accepted: 08/13/2023] [Indexed: 08/23/2023]
Abstract
Coastal soil microbiomes play a key role in coastal ecosystem functioning and are intensely threatened by land reclamation. However, the impacts of coastal reclamation on soil microbial communities, particularly on their assembly processes, co-occurrence patterns, and the multiple soil functions they support, remain poorly understood. This impedes our capability to comprehensively evaluate the impacts of coastal reclamation on soil microbiomes and to restore coastal ecosystem functions degraded by reclamation. Here, we investigated the temporal dynamics of bacterial and fungal communities, community assembly processes, co-occurrence patterns, and ecosystem multifunctionality along a 53-year chronosequence of paddy soil following reclamation from tidal flats. Reclamation of tidal flats to paddy soils resulted in decreased β-diversity, increased homogeneous selection, and decreased network complexity and robustness of both bacterial and fungal communities, but caused contrasting α-diversity response patterns of them. Reclamation of tidal flats to paddy soils also decreased the multifunctionality of coastal ecosystems, which was largely associated with the fungal network complexity and α-diversity. Collectively, this work demonstrates that coastal reclamation strongly reshaped the soil microbiomes at the level of assembly mechanisms, interaction patterns, and functionality level, and highlights that soil fungal community complexity should be considered as a key factor in restoring coastal ecosystem functions deteriorated by land reclamation.
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Affiliation(s)
- Cheng Chen
- Key Laboratory of Geographic Information Science (Ministry of Education), East China Normal University, Shanghai 200241, China; School of Geographic Sciences, East China Normal University, Shanghai 200241, China; Key Laboratory of Spatial-temporal Big Data Analysis and Application of Natural Resources in Megacities, Ministry of Natural Resources, Shanghai 200241, China
| | - Guoyu Yin
- Key Laboratory of Geographic Information Science (Ministry of Education), East China Normal University, Shanghai 200241, China; School of Geographic Sciences, East China Normal University, Shanghai 200241, China; Key Laboratory of Spatial-temporal Big Data Analysis and Application of Natural Resources in Megacities, Ministry of Natural Resources, Shanghai 200241, China.
| | - Lijun Hou
- State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200241, China
| | - Yinghui Jiang
- School of Geography and Environment, Jiangxi Normal University, Nanchang, 330022 Jiangxi, China
| | - Dongyao Sun
- School of Geography Science and Geomatics Engineering, Suzhou University of Science and Technology, Suzhou 215009, China
| | - Xia Liang
- State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200241, China
| | - Ping Han
- Key Laboratory of Geographic Information Science (Ministry of Education), East China Normal University, Shanghai 200241, China; School of Geographic Sciences, East China Normal University, Shanghai 200241, China; Key Laboratory of Spatial-temporal Big Data Analysis and Application of Natural Resources in Megacities, Ministry of Natural Resources, Shanghai 200241, China
| | - Yanling Zheng
- Key Laboratory of Geographic Information Science (Ministry of Education), East China Normal University, Shanghai 200241, China; School of Geographic Sciences, East China Normal University, Shanghai 200241, China; Key Laboratory of Spatial-temporal Big Data Analysis and Application of Natural Resources in Megacities, Ministry of Natural Resources, Shanghai 200241, China
| | - Min Liu
- Key Laboratory of Geographic Information Science (Ministry of Education), East China Normal University, Shanghai 200241, China; School of Geographic Sciences, East China Normal University, Shanghai 200241, China; Key Laboratory of Spatial-temporal Big Data Analysis and Application of Natural Resources in Megacities, Ministry of Natural Resources, Shanghai 200241, China.
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Li X, Hu W, Bleisch WV, Li Q, Wang H, Ti B, Qin Z, Sun J, Zhang F, Jiang X. Disproportionate loss of threatened terrestrial mammals along anthropogenic disturbance gradients. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 850:158038. [PMID: 35981589 DOI: 10.1016/j.scitotenv.2022.158038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Revised: 08/10/2022] [Accepted: 08/11/2022] [Indexed: 06/15/2023]
Abstract
Tens of thousands of species are increasingly confronted with habitat degradation and threatened with local extirpation and global extinction as a result of human activities. Understanding the local processes that shape the regional distribution patterns of at-risk species is useful in safeguarding species against threats. However, there is only limited understanding of the processes that shape the regional distribution patterns of threatened species. We explored the drivers and patterns of species richness of threatened, non-threatened and total terrestrial mammals by employing multi-region multi-species occupancy models based on data from a broad camera trapping survey at 1096 stations stratified across different levels of human activities in 54 mountain forests in southwest China. We compared correlates between total and threatened species richness and examined relationships of human impact variables with the proportion of threatened species and the site's local contribution to β diversity (LCBD). We found that threatened species richness was negatively related to human modification and human presence. However, both non-threatened and total species richness increased as human modification increased. Predicted proportions of threatened species were strongly and positively related to LCBD but negatively related to human modification and human presence. Our results indicate that human impacts can lead to disproportionate loss of threatened terrestrial mammals and highlight the importance of considering threatened species diversity independently from total species richness for directing conservation resources. Our approach represents one of the highest-resolution analyses of different types of human impacts on regional diversity patterns of threatened terrestrial mammals available to inform conservation policy.
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Affiliation(s)
- Xueyou Li
- State Key Laboratory of Genetic Resources and Evolution & Yunnan Key Laboratory of Biodiversity and Ecological Security of Gaoligong Mountain, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650201, China
| | - Wenqiang Hu
- State Key Laboratory of Genetic Resources and Evolution & Yunnan Key Laboratory of Biodiversity and Ecological Security of Gaoligong Mountain, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650201, China
| | - William V Bleisch
- China Exploration and Research Society, 2707-08 SouthMark, Wong Chuk Hang, Hong Kong, China
| | - Quan Li
- State Key Laboratory of Genetic Resources and Evolution & Yunnan Key Laboratory of Biodiversity and Ecological Security of Gaoligong Mountain, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650201, China
| | - Hongjiao Wang
- State Key Laboratory of Genetic Resources and Evolution & Yunnan Key Laboratory of Biodiversity and Ecological Security of Gaoligong Mountain, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650201, China
| | - Bu Ti
- Deqan Administrative Sub-Bureau of Baimaxueshan National Nature Reserve, Diqing 674500, China
| | - Zhongyi Qin
- Chuxiong Administrative Sub-Bureau of Ailaoshan National Nature Reserve, Chuxiong 675000, China
| | - Jun Sun
- Gongshan Administrative Sub-Bureau of Gaoligongshan National Nature Reserve, Nujiang 673500, China
| | - Fuyou Zhang
- Baoshan Administrative Bureau of Gaoligongshan National Nature Reserve, Baoshan 678000, China
| | - Xuelong Jiang
- State Key Laboratory of Genetic Resources and Evolution & Yunnan Key Laboratory of Biodiversity and Ecological Security of Gaoligong Mountain, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650201, China.
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Duarte C, Farago TLB, dos Anjos CS, dos Santos NR, do Nascimento LM, Cella-Ribeiro A, de Deus CP. Spatial and seasonal variation of benthic fish assemblages in whitewater rivers of Central Amazon. BIOTA NEOTROPICA 2022. [DOI: 10.1590/1676-0611-bn-2021-1312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Abstract Despite the high number of fish species described for the Amazon region, the ichthyofauna that inhabits the depths of the main channels of large tropical rivers is one of the least known. In order to know the diversity patterns of these fish in whitewater rivers of the Central Amazon, we used data from the main channel benthic fish assemblage of the Japurá, Purus and Madeira rivers and tested the hypothesis that there are marked spatial and seasonal differences in the composition of the fish community among them. For this, we used a multivariate dispersion test, total β diversity and its decomposition into local (LCBD) and species contribution to β diversity (SCBD). Additionally, we tested for relationships between LCBD values and richness, total abundance, and environmental variables. We categorized species with higher SCBD values into resident or migratory to investigate the potential importance of floodplains to benthic fish assemblage of the main channel of whitewater rivers. Our results corroborate the proposed hypothesis, showing that there are seasonal and inter-river differences in benthic ichthyofauna, being more evident for the Purus River. LCBD showed strong negative relationships with species richness and total abundance, particularly in the Japurá and Madeira rivers in rising season, indicating that rivers and season with high uniqueness in their composition also had low richness and abundance. LCBD was negatively correlated with conductivity and pH, which increased with declining these environmental variables, as observed mainly in Japurá River in both seasons. Approximately one third of the species had higher than average SCBD values and were considered major contributors to β diversity, as well as classified as migratory. This demonstrates the importance of conducting studies that use spatial and seasonal variables, in addition to including the background fish fauna in conservation studies, expanding the protected area and taking into account the different patterns of diversity between rivers. Furthermore, these differences in assemblage composition might be explained by the asymmetrical spatial use of habitats during different seasons, strongly suggesting the importance of the flood-pulse cycle for maintaining diversity in this environment.
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Affiliation(s)
- Cleber Duarte
- Instituto Nacional de Pesquisas da Amazônia, Brasil; Universidade Estadual da Paraíba, Brasil
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García‐Navas V, Martínez‐Núñez C, Tarifa R, Molina‐Pardo JL, Valera F, Salido T, Camacho FM, Rey PJ. Partitioning beta diversity to untangle mechanisms underlying the assembly of bird communities in Mediterranean olive groves. DIVERS DISTRIB 2021. [DOI: 10.1111/ddi.13445] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
Affiliation(s)
- Vicente García‐Navas
- Department of Integrative Ecology Estación Biológica de Doñana EBDCSIC Seville Spain
- Department of Evolutionary Biology and Environmental Studies University of Zurich Zurich Switzerland
| | - Carlos Martínez‐Núñez
- Departamento de Biología Animal Biología Vegetal y EcologíaUniversidad de Jaén Jaén Spain
| | - Rubén Tarifa
- Departamento de Biología Animal Biología Vegetal y EcologíaUniversidad de Jaén Jaén Spain
- Departamento de Biología Animal IVAGROUniversidad de CádizPuerto Real Cádiz Spain
| | - José L. Molina‐Pardo
- Departamento de Biología Animal Biología Vegetal y EcologíaUniversidad de Jaén Jaén Spain
- Centro de Investigación de Colecciones Científicas de la Universidad de Almería Almería Spain
| | - Francisco Valera
- Departamento de Ecología Funcional y Evolutiva Estación Experimental de Zonas Áridas EEZACSIC Almería Spain
| | - Teresa Salido
- Departamento de Biología Animal Biología Vegetal y EcologíaUniversidad de Jaén Jaén Spain
| | - Francisco M. Camacho
- Departamento de Biología Animal Biología Vegetal y EcologíaUniversidad de Jaén Jaén Spain
| | - Pedro J. Rey
- Departamento de Biología Animal Biología Vegetal y EcologíaUniversidad de Jaén Jaén Spain
- Instituto Interuniversitario del Sistema Tierra de AndalucíaUniversidad de Jaén Jaén Spain
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