Tawqir Bashir

In the Indian Trans-Himalaya, Pallas’s cat Otocolobus manul is reported exclusively from Ladakh, Himachal Pradesh, Uttarakhand and Sikkim. In Ladakh, it has been reported primarily from the south-east, with no prior evidence of its occurrence in the north. In this study, we documented the first record of Pallas’s cat in the Karakoram Wildlife Sanctuary in the Nubra Valley, northern Ladakh. We identified the species based on the non-invasive genetic analysis of a morphologically ambiguous scat sample collected during a study on dietary patterns of sympatric carnivores. DNA-based species identification confirmed the presence of Pallas’s cat. We also identified prey remains, of pika Ochotona spp. and Himalayan marmot Marmota himalayana , in the scat. Our record extends the known range of Pallas’s cat into northern Ladakh and adds a new mammal species to the documented fauna of the Karakoram Wildlife Sanctuary. We recommend a comprehensive assessment of distribution, population, diet, habitat and potential threats to this elusive species to ensure its long-term survival in this landscape.

Comprehensive species distribution data is crucial for assessing threat levels, conservation status and formulating effective conservation strategies. Globally, over half of the primate species remain unstudied, particularly those inhabiting challenging and remote environments. Endemic to the North-Western Himalayas, the Kashmir gray langur (Semnopithecus ajax) is a primarily arboreal forest-dwelling folivorous primate. Its shy behavior and the steepness of the inhabiting terrain in the high-altitude ecosystem makes it highly elusive and challenging to study. We employed an ensemble modeling approach to (i) predict the distribution of species in the Kashmir Himalayas and, (ii) gain insight into the importance of various environmental factors that influence the occurrence of the Kashmir gray langur. Our model, based on 35 environmental variables and 144 occurrence points, depicted forested mountainous areas with moderate slopes at mid elevations and with low human disturbance as suitable habitats for the Kashmir gray langur. The model showed strong discrimination (mean AUC = 0.926; mean TSS = 0.78), with predicted areas corresponding to the observed species locations, thereby supporting both its validity and ecological relevance. Variable response curves indicated a strong association of the species with areas characterized by pronounced precipitation seasonality, moderately sloping terrain, and optimal diurnal temperature ranges. These conditions typify temperate deciduous and coniferous forests, and these forests are increasingly threatened by ongoing climate change and require climate-adaptive management strategies for their conservation. We recommend integrating the findings of this preliminary yet important study into devising effective conservation and management strategies, as well as enhancing regular population monitoring to generate a comprehensive database on the species for long-term conservation implications.

The snow leopard Panthera uncia is categorized as Vulnerable on the IUCN Red List. It is the least well-known of the large felids because of its shy and elusive nature and the inaccessible terrain it inhabits across the mountains of Central and South Asia. We report the first photographic record of the snow leopard in Kishtwar High Altitude National Park, India. During our camera-trapping surveys, conducted using a grid-based design, we obtained eight photographs of snow leopards, the first at 3,280 m altitude on 19 September 2022 and subsequent photographs over 3,004–3,878 m altitude. We identified at least four different individuals, establishing the species’ occurrence in Kiyar, Nanth and Renai catchments, with a capture rate of 0.123 ± SE 0.072 captures/100 trap-nights. We also recorded the presence of snow leopard prey species, including the Siberian ibex Capra sibirica, Himalayan musk deer Moschus leucogaster, long-tailed marmot Marmota caudata and pika Ochotona sp., identifying the area as potential snow leopard habitat. Given the location of Kishtwar High Altitude National Park, this record is significant for the overall snow leopard conservation landscape in India. We recommend a comprehensive study across the Kishtwar landscape to assess the occupancy, abundance, demography and movement patterns of the snow leopard and its prey. In addition, interactions between the snow leopard and pastoral communities should be assessed to understand the challenges facing the conservation and management of this important high-altitude region.

Primates are among the most threatened taxa globally, therefore, there is a need to estimate and monitor their populations. Kashmir Gray Langur Semnopithecus ajax is an endangered species for which there is no population estimate. We used double‐observer method to estimate its population size in the Kashmir region of North‐Western Himalaya. We walked 1284 km across 31 survey blocks spanning all three divisions of Kashmir viz., North, Central, and South Kashmir, covering an area of 411 km². We counted a minimum of 1367 individual langurs from 27 groups. The detection probability for observer 1 (0.719) and observer 2 (0.656) resulted in a population estimate of 1496 (95% confidence interval [CI] 1367–1899) across 30 groups (with a mean group size of 51), giving a density estimate of 3.64 (3.33–4.62) langurs/km². We found double‐observer surveys to be suitable for the population estimation of langurs, and we make recommendations on how to effectively conduct primate surveys, especially in mountainous ecosystems. Our records extend the species distribution range beyond stated by the International Union for Conservation of Nature. Our findings also highlight that the Kashmir Himalaya is a stronghold of the species, where conservation efforts should focus.

Population size and geographical range are the key quantitative criteria used by the IUCN to assess the conservation status of a species. However, such information is often incomplete and inconsistent, even for seemingly abundant species. To assess the population and conservation status of Indian primates, we conducted a systematic review of recent research using the searching, appraisal, synthesis and analysis (SALSA) approach. We reviewed a total of 41 studies on Indian primates conducted during the last 2 decades (2000–2021) for information on various parameters that influence their conservation. We found that 20 out of a total of 26 primate species were evaluated for their population status, and the majority of these studies (71%) showed an overall declining population trend. Remarkably, all but one of the studies conducted exclusively within protected areas revealed declining population trends, whereas trends were more variable for primate populations in non-protected areas. Our data indicate that only 27% (n = 7) of Indian primate species have been surveyed or re-surveyed to assess their population status within the last 5 years. Although threats vary in time and space from species to species, 78% of the studies recorded natural system modifications including habitat loss and fragmentation among the main threats to the survival of Indian primates. Most studies on the population status of Indian primates have either been spatially limited or used outdated methods. We recommend that future studies adopt robust techniques to estimate populations and work across larger geographical scales to develop effective management strategies for the conservation of primates in India.

Physiographic and hydrologic complexities play major role in determining the habitat suitability for river dolphins. However, dams and other water development structures alter hydrologic regimes that degrade habitat conditions. For the three extant species of obligate freshwater dolphins, namely: Amazon dolphin (Inia geoffrensis), Ganges dolphin (Platanista gangetica), and Indus dolphin (Platanista minor), the threat is high as dams and water‐based infrastructure dotted throughout their distribution range impact dolphin populations by restricting their movement. But there is also evidence of localized increase in dolphin population in certain segments of habitats affected by such hydrologic alterations. Hence, the impacts of hydrologic alterations on dolphin distribution are not as binary as it seems. We aimed to ascertain the role of hydrologic and physiographic complexities in determining the distribution of the dolphins in their geographic ranges using density plot analysis and also to understand how hydrologic alterations in the rivers affect their distribution using a combination of density plot analysis and review of literature. The influence of some of the study variables such as distance to confluence and sinuosity was similar across species—for instance, all three dolphin species preferred slightly sinuous river segments and habitats near confluences. However, varying influences across species were observed for some other variables such as river order and river discharge. We assessed 147 cases of impacts of hydrological alterations on dolphin distribution by categorizing the reported impacts in nine broad types out of which habitat fragmentation accounted for the majority of the impacts (35%) followed by habitat reduction (24%). These endangered species of freshwater megafauna will experience further intensified pressures as more large‐scale hydrologic modifications such as damming and diversion of rivers are underway. In this context, basin‐scale water‐based infrastructural development planning should take into consideration the salient ecological requirements of these species to ensure their long‐term survival.