Reversing net loss but aggravating fragmentation of habitat in the global Asian elephant range in the mid-2010s

Biological Conservation, Год журнала: 2025, Номер 307, С. 111189 - 111189

Опубликована: Апрель 26, 2025

Язык: Английский

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Barriers and corridors: Assessment of gene flow and movement among red panda populations in eastern Himalayas

The Science of The Total Environment, Год журнала: 2024, Номер 931, С. 172523 - 172523

Опубликована: Апрель 22, 2024

Язык: Английский

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Assessing Global Efforts in the Selection of Vertebrates as Umbrella Species for Conservation

Biology, Год журнала: 2023, Номер 12(4), С. 509 - 509

Опубликована: Март 28, 2023

The umbrella-species strategy has been proposed as an attainable tool to achieve multi-species and community conservation with limited investment. There have many umbrella-related studies since the concept's inception; thus, a summary of global study efforts recommended umbrella species is important for understanding advances in field facilitating applications. Here, we collated 213 terrestrial vertebrates from 242 scientific articles published during 1984-2021 analyzed their geographic patterns, biological features, statuses identify trends selection species. We found considerable bias: most and, consequently, are Northern Hemisphere. also strong taxonomic bias, grouses (order Galliformes) large carnivores being popular amphibians reptiles largely overlooked. In addition, wide-ranging non-threatened were frequently Given observed biases trends, caution that appropriate need be chosen each location, it confirm popular, effective Moreover, should investigated potential strengths if applied appropriately, may one best options today's research funding landscape.

Язык: Английский

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Identifying umbrella and indicator species to support multispecies population connectivity in a Himalayan biodiversity hotspot

Frontiers in Conservation Science, Год журнала: 2024, Номер 5

Опубликована: Янв. 25, 2024

Successful conservation hinges on the reliable prediction and prioritisation of population core habitats dispersal corridors. However, reliance single-species connectivity has produced mixed results and, in most cases, failed to protect other species under appealing but often unfulfilled guise umbrella protection. The main objectives this study were: (1) identify corridors for 15 terrestrial mammal across Bhutan, (2) indicator wildlife connectivity, (3) prioritise areas focal species, (4) develop composite multispecies maps evaluate effectiveness existing protected area network. We used kernel density (KD) habitat factorial least-cost path (LCP) map correlation cluster analyses quantitative ranking these species. Finally, we corridors, identified gaps network (PAN). found that ungulates were generally more effective than carnivores serving as protection, with Asian elephant ( Elephas maximus ) emerging muntjac Muntiacus six Bhutan: tiger Panthera tigris ), dhole Cuon alpinus clouded leopard Neofelis nebulosa Asiatic black bear Ursus thibetanus elephant, sambar deer Rusa unicolor ). Most species’ outside PAN southern indicating opportunities increased through expanding region. A total 40% 24% PAN, large parts Bhutan offering suitable conservation. Core considered only partially overlapped, stressing importance multi-species consideration designating

Язык: Английский

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Differentially biased sampling strategies reveal the non-stationarity of species distribution models for Indian small felids

Ecological Modelling, Год журнала: 2024, Номер 493, С. 110749 - 110749

Опубликована: Май 11, 2024

Язык: Английский

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Seeing the Big‐ to Fine‐Grained Picture: Exploring the Baseline Status of Mammal Occupancy Across Myanmar Using Scale‐Optimised Modelling

Diversity and Distributions, Год журнала: 2024, Номер 30(11)

Опубликована: Окт. 15, 2024

ABSTRACT Aim Myanmar, an Indo‐Burmese biodiversity hotspot, lacks baseline data on species occurrence and distribution. This hinders monitoring optimisation of conservation development plans. We aim to document mammal occupancy, interactions with environmental factors scale‐dependent responses. Location Hkakaborazi National Park, Htamanthi Wildlife Sanctuary, Alaungdaw Kathapa Rakhine Yoma Elephant Range, Say Taung Myinmoletkhat Key Biodiversity Areas distributed across Myanmar. Methods Camera trap throughout Myanmar were used analyse occupancy. conducted a multiscale hierarchical spatial modelling process, using local pooled also optimised scale five scales six predictors, univariate occupancy models. then selected scale‐optimised variables for multivariate modelling, repeating this process each local, regional national datasets. Results The study identified 47 terrestrial observed strong nonstationarity in estimates. Relationships differed among highly dependent. Importantly, estimates produced by pooling sites greatly different from any the individual sites, suggesting that high heterogeneity abundance requires or nested account variation. Main Conclusions Future efforts should focus Northern if range‐restricted rare are be protected, while still given common which serve as potential indicators overall community structure. results datasets underscores misleading interpretations aggregated nonstationary ecological systems. Metareplicated analyses geographically ecologically proximal provide important view variation patterns guiding design improving understanding drivers change large regions, such Southeast Asia.

Язык: Английский

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Assessment of the population and suitable habitat for a leopard (Panthera pardus) in the urban landscapes of Central India

European Journal of Wildlife Research, Год журнала: 2024, Номер 70(6)

Опубликована: Ноя. 16, 2024

Язык: Английский

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Habitat Suitability Modeling to Inform Seascape Connectivity Conservation and Management

Diversity, Год журнала: 2021, Номер 13(10), С. 465 - 465

Опубликована: Сен. 26, 2021

Coastal habitats have experienced significant degradation and fragmentation in recent decades under the strain of interacting ecosystem stressors. To maintain biodiversity functioning, coastal managers restoration practitioners face urgent tasks identifying priority areas for protection developing innovative, scalable approaches to habitat restoration. Facilitating these efforts are models seascape connectivity, which represent ecological linkages across heterogeneous marine environments by predicting species-specific dispersal between suitable patches. However, defining patches migratory pathways required construct ecologically realistic connectivity remains challenging. Focusing on two reef-associated fish species Florida Keys, United States America (USA), we compared methods constructing species- life stage-specific spatial suitability—penalized logistic regression maximum entropy (MaxEnt). The goal model comparison was identify modeling algorithm that produced most detailed products use subsequent assessments. Regardless species, MaxEnt’s ability distinguish unsuitable locations exceeded penalized regressions. Furthermore, suitability predictions more closely aligned with known ecology study revealing environmental conditions patterns best support each seascape, implications distribution key processes. Our research demonstrates promise as a scalable, species-specific, spatially explicit tool informing guiding conservation efforts.

Язык: Английский

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Conservation potential of non-protected area for sympatric carnivores in Bhutan

Global Ecology and Conservation, Год журнала: 2023, Номер 42, С. e02392 - e02392

Опубликована: Фев. 1, 2023

Carnivore conservation in Bhutan is mainly focused on charismatic species such as the tiger and snow leopard inside protected areas. Little known about status of small medium-sized sympatric carnivores outside We aim to investigate effects environmental anthropogenic variables occupancy three carnivores: dhole (Cuon alpinus), Asiatic golden cat (Catopuma temminckii), (Prionailurus bengalensis) predict their distribution a key non-protected area Bhutan. used detection/non-detection data from camera trap survey conducted 2019–2020 Sarpang, employed detection-corrected models assess species-habitat relationship spatial distribution. The responses were nuanced among individuals at different scales. Elevation was associated with decline habitat use probability cats cats. Forest cover positively influenced but negatively for dholes. Dholes less likely habitats close human settlement. Our results indicate that forests areas could offer high potential carnivore conservation. findings suggest patterns sympatry are also mediated by prey abundance variables. Taken together, we show affected settlement density relatively fine-scale (1 km) particularly dholes avoid interspersed Multi-carnivore can be achieved minimizing land change, limiting forest conversion protecting species. A holistic approach management balances development may needed an increasingly human-modified landscape.

Язык: Английский

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Urban expansion and infrastructure development reduce habitat suitability for Asian elephants in southwestern China

Journal of Wildlife Management, Год журнала: 2022, Номер 86(4)

Опубликована: Март 7, 2022

Abstract Conservation interventions for threatened species must be based on accurate assessments of the effects anthropogenic pressures habitat suitability. We used multiscale multivariable species‐distribution modeling to evaluate suitability an Asian elephant ( Elephas maximus ) population in Shangyong Reserve, Yunnan Province, southwestern China. investigated scales at which measurements environmental variables best reflected selection, and examined whether these responses changed over 2 decades (2000–2010 2011–2020) response 20 variables, including 14 reflecting landscape fragmentation, extent buildings, transport infrastructure. Elephant presence was sensitive scale each variable, differed among within between decades. More than half influenced coarse 8 or 16 km, 12 2000–2010 10 2011–2020. Overall, multivariate models with their optimal had higher discrimination uniformly fine 1 km km. The suitable elephants declined by 24% Less located Reserve (49% 2000–2010, 40% 2011–2020), indicating importance managing beyond reserve boundaries. Roads buildings reduced probability presence, that extended immediate footprint. advocate infrastructure planned buffers, ≥8 wide, roads core habitat. Multiscale should employed ensure all remaining fragmented populations is identified, mapped, protected.

Язык: Английский

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