Application of species distribution models to estimate and manage the Asiatic black bear (Ursus thibetanus) habitat in the Hindu Kush Mountains, Pakistan

European Journal of Wildlife Research, Год журнала: 2024, Номер 70(3)

Опубликована: Май 31, 2024

Язык: Английский

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Modeling climate change impacts on the distribution of an endangered brown bear population in its critical habitat in Iran

The Science of The Total Environment, Год журнала: 2022, Номер 837, С. 155753 - 155753

Опубликована: Май 6, 2022

Язык: Английский

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Impact of Climate Change on the Distribution of Three Rare Salamanders (Liua shihi, Pseudohynobius jinfo, and Tylototriton wenxianensis) in Chongqing, China, and Their Conservation Implications

Animals, Год журнала: 2024, Номер 14(5), С. 672 - 672

Опубликована: Фев. 21, 2024

The Wushan Salamander (Liua shihi), Jinfo (Pseudohynobius jinfo), and Wenxian Knobby (Tylototriton wenxianensis) are rare national Class II protected wild animals in China. We performed MaxEnt modeling to predict analyze the potential distribution trends of these species Chongqing under current future climate conditions. Species data were primarily obtained from field surveys, supplemented by museum collections existing literature. These efforts yielded 636 records, including 43 for P. jinfo, 23 T. wenxianensis, 570 L. shihi. Duplicate records within same 100 m × grid cell removed using ENMTools, resulting 10, 12, 58 valid points shihi, respectively. optimization feature class parameters (FC) regularization multiplier (RM) applied R package “ENMeval 2.0” establish optimal model with MaxEnt. refined models simulate suitable areas three species. results indicate that habitat area shihi accounted 9.72% whole region municipality. It is projected that, 2050, proportion will increase 12.54% but decrease 11.98% 2070 further decline 8.80% 2090. jinfo 1.08% municipality, which expected 0.31%% 0.20% 2070, 0.07% wenxianensis 0.81% anticipated 0.37% 0.21% 0.06% Human disturbance, variables, characteristics primary factors influencing salamander Chongqing. proximity roads significantly impacts while conditions mainly affect distance water sources crucial wenxianensis. following suggestions made based on key variables identified each species: (1) For it imperative minimize human disturbances preserve without vegetation nature reserves ensure their continued existence. (2) conservation high-altitude habitats utmost importance, along reduction caused maintain species’ ecological niche. (3) protection aquatic crucial. Additionally, mitigate road construction enhance public awareness essential preservation this connectivity its habitats.

Язык: Английский

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Identifying human-caused mortality hotspots to inform human-wildlife conflict mitigation

Global Ecology and Conservation, Год журнала: 2022, Номер 38, С. e02241 - e02241

Опубликована: Июль 22, 2022

Humans are responsible for over a quarter of all wildlife mortality events across the globe. The pressure this puts on populations contributes to decline many at-risk species. To minimize human-caused and reverse population declines in species world, we first need know where these happening or likely occur since managers public agencies often have limited resources devote problem. As such, our objective was develop modeling approach delineate hotspots regions with data. We used internet search engines national media collect data brown bear (Ursus arctos) Iran from 2004 2019. then developed spatially-explicit Maximum Entropy (MaxEnt) model using anthropogenic environmental variables predict probability mortality. were able 7000 km2 as hotspots, along geographical locations those hotspots. This provides information that can help identify critical conflict mitigation efforts be implemented reduce potential However, more targeted studies such surveys local people will needed inside identified methodology assess attitudes humans toward different species, informing specific actions made. Finally, suggest systematic is lacking.

Язык: Английский

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Climate change may improve the habitat suitability and connectivity of sika deer (Cervus nippon) in the Shennongjia area of China

Ecological Informatics, Год журнала: 2024, Номер 81, С. 102558 - 102558

Опубликована: Март 12, 2024

In order to effectively conserve a species and manage its population, it is critical understand the impact of climate change on habitat quality connectivity. The sika deer (Cervus nippon) ungulate endemic East Asia listed as Category I State Key Protected Wild Animals under Chinese law. C. nippon population was established in Shennongjia area 30 years ago, there an urgent need analyse environmental quality. this study, we compared suitable habitats connectivity by utilizing ecological niche model that integrated set factors combined with cost-distance approach for both present time well future. most encouraging findings were may be obviously enlarged improved change. limited at present; however, possible total number patches can increase twenty- thirty-fold quadruple sextuple, respectively, future (2050–2070). We detected clear trend expansion into northeast. interpatch least-cost paths dramatically (up six twelve times higher), lengths movement costs decrease half. Based these results, several conservation recommendations have been suggested. Our study provides valuable reference protective actions taken serve template establishing strategies other species.

Язык: Английский

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Modeling the distribution of Aloe ankoberensis and A. debrana under different climate change scenarios in North Shewa Zone, Amhara National Regional State, Ethiopia

Ecological Processes, Год журнала: 2024, Номер 13(1)

Опубликована: Май 17, 2024

Abstract Background Aloe ankoberensis M.G. Gilbert & Sebsebe and A. debrana Christian are Ethiopian endemic species currently classified as endangered least concern, respectively under International Union for Conservation of Nature (IUCN) categories. Recent studies indicate that climate change is anticipated to significantly influence the distribution plant species. Therefore, this study aimed model different scenarios in North Shewa Zone, Amhara National Regional State Ethiopia. Thirty-six 397 georeferenced presence points , respectively, 12 environmental variables were used simulate their current future distributions. The ensemble approach was examine (2050 2070) climatic suitability both three shared socio-economic pathway (SSP) (SSP 2.6, 4.5 8.5). Results performance excellent with score area curve (AUC) 0.96 true skill statistics (TSS) 0.88, good AUC 0.87 TSS 0.63. main affected species' distributions mean diurnal range temperature, annual precipitation, elevation. According model, conditions, 98.32%, 1.01%, 0.52%, 0.15% not suitable, lowly, moderately, highly suitable areas, 63.89%, 23.35%, 12.54%, 0.21% moderately . Under scenarios, habitats these could shrink. In addition, all it areas will be lost completely unless crucial interventions done on time. Conclusions results may witness a decline habitat which leads increasing threat extinction. develop conservation plan enhance adaptation strategies mitigate loss highland sub-Afroalpine

Язык: Английский

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MaxEnt modeling to predict the current and future distribution of Clerodendrum infortunatum L. under climate change scenarios in Dehradun district, India

Modeling Earth Systems and Environment, Год журнала: 2021, Номер 8(2), С. 2051 - 2063

Опубликована: Июнь 13, 2021

Язык: Английский

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Impact of climate change on Asiatic black bear (Ursus thibetanus) and its autumn diet in the northern highlands of Pakistan

Global Change Biology, Год журнала: 2021, Номер 27(18), С. 4294 - 4306

Опубликована: Июнь 9, 2021

Abstract Approximately 20%–30% of plant and animal species are at risk extinction by the end 21st century owing to climate change. Range shifts range contractions in will dramatically affect distribution animals relying on them for food shelter. The negative impacts change forested landscapes northern highlands Pakistan (NHP) could composition distribution. Asiatic black bear ( Ursus thibetanus ), a forest‐dwelling species, primarily depends plants foraging, is assumed be affected NHP. Scat analyses indigenous knowledge from Machiara National Park revealed maximum consumption Quercus (natural food) Zea mays (human grown autumn season. We collected occurrence data its commonly used (three spp.) MaxEnt model simulate current future (in 2050 2070) under RCP4.5 (medium carbon emission scenario) RCP8.5 (extreme scenario). results predict reduction extreme fragmentation habitats all spp. Besides, dramatic decrease suitable (SH) very highly (HSH) was predicted future. shift may interrupt denning chronology bears, escalate human‐black conflicts local extirpation species. Given extent magnitude change, it likely not enough focus solely conservation bear. need more dynamic planning aiming mitigating effect including forests.

Язык: Английский

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Modeling impacts of climate change on the potential distribution of three endemic Aloe species critically endangered in East Africa

Ecological Informatics, Год журнала: 2022, Номер 71, С. 101765 - 101765

Опубликована: Авг. 8, 2022

Язык: Английский

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Climate change induces habitat shifts and overlaps among carnivores in an arid and semi-arid ecosystem

Ecological Informatics, Год журнала: 2023, Номер 77, С. 102247 - 102247

Опубликована: Авг. 6, 2023

Distribution range shift is inevitable for many species as climate change continues to shape and alter their habitat. Predicting where these shifts occur can help us know what anticipate thus design better programs strategies management. Due projected extreme in arid semi-arid ecosystems, we hypothesized that adapted systems would experience considerable spatial shifts. To test our hypothesis, modelled current future habitats under different scenarios three iconic carnivores (grey wolf, golden jackal, striped hyaena) central of Iran calculated overlaps. Our models predict although each responds differently environmental changes, are heavily influenced by climatic variables, water resources, roads. also suggest the high-quality grey wolves hyaenas will probably expand, while jackals, it decrease. Significant overlap highly suitable habitat exist among species, particularly between jackal hyaena. The overlapped areas all cover 9% 10% whole region at present future. Because decrease rainfall future, may face competition due change. findings crucial establishing conservation conserve carnivore

Язык: Английский

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