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(a) Ratio of CWD to EucD for ecological corridors; (b) Ratio of CWD to LCP for ecological corridors; (c) Current density of ecological corridors; (d) Ecological pinch points and barrier points.
Contexts in source publication
Context 1
... corridor length (56.82 km). The longest corridor, measuring 215.01 km, connects the Fuhai Jintasi Mountain Steppe Grassland State Nature Reserve with the Wulunguhe National Wetland Park. Russia had the greatest number of high-quality ecological corridors, whereas Mongolia had the lowest, particularly near the Gobiin Ikh/B Strict Nature Reserve (Fig. ...
Context 2
... the current density map generated by the PinchPoint Mapper tool (Fig. 4(c)), 76 ecological pinchpoints cover an area of 59.50 km 2 . The ecological pinch points primarily involve grasslands (42.75 km 2 ), bare land (6.75 km 2 ), forests (6.25 km 2 ), cropland (3.50 km 2 ), and shrubland (0.25 km 2 ). Ecological pinch points were primarily distributed in northwest Kazakhstan, the southern part of the ...
Context 3
... km 2 ), bare land (6.75 km 2 ), forests (6.25 km 2 ), cropland (3.50 km 2 ), and shrubland (0.25 km 2 ). Ecological pinch points were primarily distributed in northwest Kazakhstan, the southern part of the Katon-Karagay National Park, and eastern Mongolia. A total of 28 ecological barrier points were determined, covering an area of 513.25 km 2 (Fig. 4(d)). In the northwestern part of the study area, ecological barriers were concentrated near urban and cropland areas, likely due to urban expansion and cropland development, which disrupted the previously continuous corridors. In the southern region, particularly near Mongolia's Gobiin Ikh/B Strict Nature Reserve, barriers and pinch ...
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... Given the ongoing global decline in biodiversity, mammal populations are increasingly impacted by both environmental changes and direct and indirect anthropogenic pressures [81]. Moreover, the transboundary regions are particularly sensitive to these human-induced disturbances, necessitating collaborative conservation efforts among neighboring nations [82]. Therefore, the implementation of a well-coordinated transboundary conservation management plan, involving multiple stakeholders working in unison, is critical for ensuring effective biodiversity protection. ...
Global warming and anthropogenic threats are significant drivers of biodiversity loss, particularly impacting smaller mammalian species. Hence, this study assessed two overlooked giant flying squirrel species, Petaurista magnificus and Petaurista nobilis, distributed across the transboundary regions of the Eastern Himalayas and Indo-Burma biodiversity hotspots. Utilizing a maximum entropy (MaxEnt) species distribution model, this study delineated suitable habitats within the IUCN-defined extent of both Petaurista species based on two modeling approaches: the habitat–climate model (HCM) and the climate-only model (COM). The models identified suitable habitat coverage of only 3.92% (HCM) and 3.75% (COM) for P. magnificus and 14.17% (HCM) and 10.04% (COM) for P. nobilis. However, as the HCM integrates both environmental and habitat variables, providing a more holistic assessment, it revealed limited biological corridor connectivity within the IUCN-defined extent for both species. Furthermore, the future projections based on the HCM indicate habitat loss of up to 81.90% for P. magnificus and 89.88% for P. nobilis due to climate change, alongside severe fragmentation, leading to the disappearance of viable habitat patches. These remaining suitable patches are expected to shrink and become increasingly isolated in the future due to climate change. Furthermore, centroid shift analyses based on the HCM predict a northwestward shift for P. magnificus and a westward shift for P. nobilis under different climate scenarios. Hence, to address these conservation challenges, the study underscores the necessity for extensive field surveys, genetic assessments, habitat corridor evaluations, and the establishment of transboundary conservation frameworks to formulate an evidence-based species management strategy for both Petaurista species.
