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, Journal Year: 2024, Volume and Issue: 70(3)

Published: May 31, 2024

Language: 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, Journal Year: 2022, Volume and Issue: 837, P. 155753 - 155753

Published: May 6, 2022

Language: 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, Journal Year: 2024, Volume and Issue: 14(5), P. 672 - 672

Published: Feb. 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.

Language: 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, Journal Year: 2024, Volume and Issue: 81, P. 102558 - 102558

Published: March 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.

Language: 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, Journal Year: 2024, Volume and Issue: 13(1)

Published: May 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

Language: 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, Journal Year: 2021, Volume and Issue: 8(2), P. 2051 - 2063

Published: June 13, 2021

Language: Английский

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

Global Ecology and Conservation, Journal Year: 2022, Volume and Issue: 38, P. e02241 - e02241

Published: July 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.

Language: 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, Journal Year: 2022, Volume and Issue: 71, P. 101765 - 101765

Published: Aug. 8, 2022

Language: Английский

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

Ecological Informatics, Journal Year: 2023, Volume and Issue: 77, P. 102247 - 102247

Published: Aug. 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

Language: Английский

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Applying a Random Encounter Model to Estimate the Asiatic Black Bear (Ursus thibetanus) Density from Camera Traps in the Hindu Raj Mountains, Pakistan

Biology, Journal Year: 2024, Volume and Issue: 13(5), P. 341 - 341

Published: May 14, 2024

Estimating the population density of vulnerable species, such as elusive and nocturnal Asiatic black bear (Ursus thibetanus), is essential for wildlife conservation management. We used camera traps a Random Encounter Model (REM) to estimate U. thibetanus during autumn winter seasons in Hindu Raj Mountains. installed 23 from October December 2020 acquired 66 independent pictures bears over 428 trap nights. Our results showed that preferred lowland areas with presence Quercus spp. estimated, using REM, 1.875 (standard error = 0.185) per square kilometer, which significantly higher than other habitats. winter, tends concentrate at lower elevations. Forest cover positive correlation rates encounters unlike Euclidean distance human settlements, altitude, aspect variables. The approaches here are cost-effective estimating rare species thibetanus, can be their Pakistan. Population estimation identify where live human–bear conflicts occurred use this information future management plans.

Language: Английский

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