Scales matter: regional environment factors affect α diversity but local factors affect β diversity of macroinvertebrates in Thousand Islands Lake catchment area

Ecological Indicators, Год журнала: 2024, Номер 158, С. 111561 - 111561

Опубликована: Янв. 1, 2024

A more profound comprehension of various facets biodiversity is essential for advancing sustainable governance and its associated ecosystem services. In this study, we delved into the composition beta diversity within macroinvertebrates communities in Thousand Islands Lake catchment area. Subsequently, investigated factors influencing diverse alpha diversity, ultimately employed structural equation modeling to analyze pathways through which both regional environmental factors, like climate land use, local variables collectively impact distinct ecosystem. Our results showed that (i) taxonomic phylogenetic diversities were primarily determined by turnover, while functional predominantly nestedness; (ii) are influenced spatial variables, with environment ranking second, use explaining lowest proportion according variance partitioning; (iii) mainly affected especially climatic (precipitation) hydrological (depth) revealed modeling. These offer compelling evidence composition, ecological drivers, specific influence vary across different scales. Future studies could focus on as well consider effects at scales, would provide new insights potential patterns community associations.

Язык: Английский

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Historical and dispersal processes drive community assembly of multiple aquatic taxa in glacierized catchments in the Qinghai-Tibet plateau

Environmental Research, Год журнала: 2024, Номер 251, С. 118746 - 118746

Опубликована: Март 19, 2024

Язык: Английский

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Spatial patterns of site and species contributions to β diversity in riverine fish assemblages

Ecological Indicators, Год журнала: 2022, Номер 145, С. 109728 - 109728

Опубликована: Ноя. 25, 2022

Understanding the patterns and ecological determinants of β diversity in freshwater ecosystems is fundamental to biogeography, conservation biology, environmental management. It has been proposed that can be divided into contributions individual sites (LCBD) or species (SCBD) total diversity. However, underlying mechanisms LCBD SCBD remain understudied fish. Here, using fish assemblages sampled from Chishui River basin, we analysed based on both abundance presence-absence data. We also examined relationships between with site (i.e., community abundance, richness, functional indices, factors, spatial variables) occupancy, niche position breadth, traits) characteristics, respectively. Our results revealed basin was well explained by factors. Fish negatively related richness showing high uniqueness generally supported low abundance. Furthermore, features were significantly associated LCBD, specialization, originality, uniqueness, but divergence, dispersion. Abundance-based showed positive occupancy whereas there hump-shaped Niche correlated SCBD, breadth traits not significant correlates SCBD. Overall, this study suggests understanding key biodiversity variation its applied repercussions. advocate importance conditions between-site connectivity for effective riverine Moreover, a simultaneous application rare would most suitable approach conservation.

Язык: Английский

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Hydraulic characteristics in channel confluence affect the nitrogen dynamics through altering interactions among multi-trophic microbiota

Water Research, Год журнала: 2023, Номер 235, С. 119882 - 119882

Опубликована: Март 15, 2023

Язык: Английский

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Impact of anthropogenic activities on the biodiversity of macrobenthos and benthic ecological quality in the mudflats of Hwangdo Island, South Korea: field surveys and remote sensing assessments

Frontiers in Marine Science, Год журнала: 2025, Номер 12

Опубликована: Фев. 5, 2025

Introduction As coastal urbanization progresses, anthropogenic activities have significantly impacted mudflats. In South Korea, land reclamation and aquaculture drastically altered mudflat ecosystems. Methods our study, we utilized five remote sensing indices to assess the impact of on Hwangdo Island. We supplemented this with field surveys evaluate macrobenthic biodiversity benthic ecological quality, investigating their relationship activities. Results discussion Spearman’s correlation analysis revealed that terrestrial quality influences biodiversity. The abundance predominant species, Pirenella sp., was primarily influenced by normalized differential build-up bare soil index (NDBSI). Furthermore, biota-environment matching (BIO-ENV) analysis, distance-based multivariate for a linear model (DisLM), redundancy (dbRDA) all pinpointed NDBSI as factor impacting communities in mudflats Seasonal changes were mainly attributed variations area resulting from agricultural Overall, Island are indirectly affected Moreover, study offers fresh perspective conservation Island’s provides critical references Korean government crafting implementing protection policies.

Язык: Английский

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Effects of long-term floodplain disconnection on multiple facets of lake fish biodiversity: Decline of alpha diversity leads to a regional differentiation through time

The Science of The Total Environment, Год журнала: 2020, Номер 763, С. 144177 - 144177

Опубликована: Дек. 17, 2020

Язык: Английский

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The role of environmental conditions, climatic factors and spatial processes in driving multiple facets of stream macroinvertebrate beta diversity in a climatically heterogeneous mountain region

Ecological Indicators, Год журнала: 2021, Номер 124, С. 107407 - 107407

Опубликована: Янв. 27, 2021

There is a growing recognition that examining patterns of ecological communities and their underlying determinants not only feasible based on taxonomic data, but also functional phylogenetic approaches. This because these additional facets can enhance the understanding relative contribution multiple processes in shaping biodiversity. However, few studies have focused multifaceted beta diversities lotic macroinvertebrates, especially when considering driving factors operating at spatial scales. Here, we examined multi-faceted (i.e., taxonomic, phylogenetic) diversity components turnover nestedness) macroinvertebrates 50 sites 10 streams situated north south slope Qinling Mountains, geographical dividing line Northern Southern China. We found draining showed significantly lower values all three than slope. Such north-to-south increases were caused by distinct climatic local environmental conditions between sides mountain range. Moreover, variables generally played most important role structuring diversity, followed variables, whereas catchment less important. Despite similar results explanatory each facet, details community-environment relationships (e.g., power) among different components. In conclusion, measuring provides complementary information to traditional approach. Therefore, an integrative approach embracing better reveal mechanisms biodiversity, which essential assessing valuing aquatic ecosystems for biodiversity management conservation.

Язык: Английский

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Loss of lateral hydrological connectivity impacts multiple facets of molluscan biodiversity in floodplain lakes

Journal of Environmental Management, Год журнала: 2022, Номер 320, С. 115885 - 115885

Опубликована: Авг. 11, 2022

Язык: Английский

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Anthropogenic impacts on multiple facets of macroinvertebrate α and β diversity in a large river-floodplain ecosystem

The Science of The Total Environment, Год журнала: 2023, Номер 874, С. 162387 - 162387

Опубликована: Фев. 25, 2023

Язык: Английский

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Environmental filtering, spatial processes and biotic interactions jointly shape different traits communities of stream macroinvertebrates

Frontiers in Ecology and Evolution, Год журнала: 2023, Номер 11

Опубликована: Июнь 19, 2023

The metacommunity concept has been widely used to explain the biodiversity patterns at various scales. It considers influences of both local (e.g., environmental filtering and biotic interactions) regional processes dispersal limitation) in shaping community structures. Compared spatial processes, influence interactions on streams received limited attention. We investigated relative importance three ecological namely (including geo-climatic factors), (represented by macroinvertebrates diatom), different traits macroinvertebrate communities subtropical streams, Eastern China. applied variance partitioning uncover pure shared effects explaining variation. results showed that filtering, jointly determined taxonomic trait compositions stream macroinvertebrates. Spatial a stronger than filtering. contribution variables was, albeit significant, rather small, which was likely result insufficient representation (by diatom traits) trophic associated with Moreover, impact depends traits, especially terms processes. For example, have strongest effect strong ability groups; greater scrapers other functional feeding groups. Overall, our integration theory provides valuable framework for understanding drivers structuring will facilitate development effective bioassessment management strategies.

Язык: Английский

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