Combining multiscale niche modeling, landscape connectivity, and gap analysis to prioritize habitats for conservation of striped hyaena (Hyaena hyaena)

PLoS ONE, Год журнала: 2022, Номер 17(2), С. e0260807 - e0260807

Опубликована: Фев. 10, 2022

Identifying spatial gaps in conservation networks requires information on species-environment relationships, and prioritization of habitats corridors. We combined multi-extent niche modeling, landscape connectivity, gap analysis to investigate scale-dependent environmental identify core corridors for a little-known carnivore Iran, the striped hyaena (Hyaena hyaena). This species is threatened Iran by road vehicle collisions direct killing. Therefore, understanding factors that affect its habitat suitability, pattern distribution, connectivity among them are prerequisite steps delineate strategies aiming at human-striped co-existence. The results showed highest predictive power extent was obtained sizes 4 2 km, respectively. Also, revealed number changed with increasing dispersal distance, approximately 21% found support 15-17% overlapped areas. Given body size species, mobility, lack significant specialization we conclude this would be more strongly influenced changes amount rather than configuration. Our approach scale variables ability must accounted efforts prioritize corridors, designing could facilitate through identification habitats, establishment areas, mitigating conflicts

Язык: Английский

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On the elephant trails: habitat suitability and connectivity for Asian elephants in eastern Indian landscape

PeerJ, Год журнала: 2024, Номер 12, С. e16746 - e16746

Опубликована: Март 29, 2024

Identifying suitable habitats and conserving corridors are crucial to the long-term conservation of large conflict-prone animals. Being a flagship species, survival Asian elephants is threatened by human-induced mortality habitat modification. We aimed assess suitability connectivity elephant Elephas maximus Linnaeus, 1758 in state Odisha eastern India. followed ensemble spatial prediction models using species presence data five environmental variables. used least-cost path circuit theory approaches identify between core for elephants. The results revealed that normalized difference vegetation index (NDVI; variable importance 42%) terrain ruggedness (19%) most influential variables predicting within study area. Our map estimated 14.6% Odisha’s geographical area (c. 22,442 km 2 ) as highly 13.3% 20,464 moderate suitable. identified 58 potential linkages maintain across Furthermore, we pinch points, bottlenecks, high centrality links habitats. offers management implications landscape highlights priority zones can help

Язык: Английский

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Water‐controlled ecosystems as complex networks: Evaluation of network‐based approaches to quantify patterns of connectivity

Ecohydrology, Год журнала: 2024, Номер 17(7)

Опубликована: Июль 10, 2024

Abstract This study provides a new perspective on understanding the intricacies of water‐mediated connectivity in ecosystems, bridging landscape ecology and geomorphology through network science. We highlight dryland river‐floodplain ecosystems as distinct examples contrasting water‐controlled systems. (1) discuss central considerations developing structural functional networks connectivity; (2) quantify emergent patterns these networks; (3) evaluate capacity science tools for investigating characteristics. With focus strength (weights) direction, is quantified using seven parameters at both node levels. find that link density, betweenness centrality page rank are highly sensitive to directionality; global efficiency degree particularly weights; relative remains unaffected by weights directions. Our underscores how approaches can transform we understand connectivity, especially consideration role(s) directionality. interdisciplinary perspective, linking ecology, hydrology geomorphology, has implications theoretical insights practical applications environmental management conservation efforts.

Язык: Английский

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Simulating impacts of rapid forest loss on population size, connectivity and genetic diversity of Sunda clouded leopards (Neofelis diardi) in Borneo

PLoS ONE, Год журнала: 2018, Номер 13(9), С. e0196974 - e0196974

Опубликована: Сен. 12, 2018

Habitat loss is the greatest threat to biodiversity in Borneo, and anticipate combat its effects it important predict pattern of consequences. Borneo a region extremely high from which forest being lost faster than any other. The little-known Sunda clouded leopard (Neofelis diardi) top predator likely depend critically on habitat connectivity that currently rapidly deforestation. We modeled landscape fragmentation population size, genetic diversity for across entirety Borneo. modelled impacts land use change between years 2000, 2010 projected forwards 2020. found substantial reductions all metrics 2000 2010: proportion connected by dispersal fell approximately 12.5% largest patch size declined around 15.1%, leading predicted 11.4% decline numbers. also these trends will accelerate greatly towards 2020, with percentage falling about 57.8%, 62.8% 62.5% large declines substantially reduce remaining population.

Язык: Английский

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Incorporating spatio-temporal connectivity for prioritized conservation of individual habitat patches in a dynamic landscape

Ecological Indicators, Год журнала: 2021, Номер 124, С. 107414 - 107414

Опубликована: Янв. 27, 2021

Habitat fragmentation has largely reduced biodiversity in the urban fringe. The prioritization of individual habitat patches can provide spatially explicit guidance for ecological conservation and restoration. Numerous studies discussed effectiveness purely spatial connectivity metrics to rank priority habitats, but hardly resolved this issue a dynamic landscape context. Meanwhile, spatio-temporal were usually applied at scale, are rarely extended determine patch scale. As such, we extend generalized betweenness centrality metric into networks evaluate priorities from perspective. contribution rates examined varying dispersal distances target species. Caidian District, fringe Wuhan City central China, is taken as case study. results illustrate that net decrease amounts quality 2005 2015 was mainly caused by expansion agricultural production. positive observed distance thresholds exceeding 200 m which allows us capture response dynamics. Accordingly, develop balanced strategy multiple species targeted measures based on coupled analysis patches. Our findings expected solid support growth.

Язык: Английский

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