Technical Reports/Books/Manuals

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    Assessment of aquatic resources of Askot landscape with reference to the human foot Prints - Phase 2
    (Wildlife Institute of India, Dehradun, 2018) Rajpur, V.; Johnson, J.A.; Srivastava, Ajay
    The aim of the report is to give an overview regarding the areas in Askot landscape which are in need for conservation in terms of aquatic habitat. This study is a part of the project Biodiversity Conservation and Rural Livelihood Improvement (BCRLIP) in Askot landscape. This report deals with the assessment of aquatic resources of Askot landscape with reference to human footprints available there. The focus is mainly on the assessment of fish density and people dependency on fishes along with the caused disturbances. People were-highly dependent on stream Rautis which is located at lower altitude of the landscape. Several human disturbances were identified in the landscape which is electrofishing, bleaching, water diversion, dynamiting, regulated water, sand mining, roads, stream crossings and waste discharge. Riparian quality was assessed in the streams of Askot landscape and found out Dhauli coming under the category F which shows low quality because of changes in the habitat. This provides the health and ecological status of all streams. On the basis of indicator criteria two indicator species was narrowed down as Schizothorax richardsonii and Naziritor chelynoides. So habitat requirement for both the species was studied and found out different requirement for substrate as boulders for Schizothorax and sand, silt for Naziritor. Further monitoring protocol is made for managing the Askot landscape in terms of aquatic fauna.
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    Technical guidelines for habitat and prey restoration in snow leopard landscapes
    (Wildlife Institute of India, Dehradun, 2017) Rawat, G.S.; Maheshwari, Aishwarya; Sathyakumar, S.
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    Assessment of the landscape between the Gir Protected Area and the Girnar Wildlife Sanctuary, Gujarat for a potential lion habitat corridor
    (Wildlife Institute of India, Dehradun, 2012) Jhala, Y.V.; Qureshi, Q.; Basu, P.; Banerjee, Kaushik
    In this report, assess the habitat characteristics, extent of fragmentation and its future trends, prey abundance and perception of the local communities towards lion conservation in the agro-pastoral landscape between the Gir PA and the Girnar forests to help in delineating the important dispersal corridor habitat between the Gir PA and the Girnar Wildlife Sanctuary, suggesting measures for its effective conservation
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    Evaluation of the functional status and quality of corridors connecting fragmented populations of tiger in the Indian part of Terai Arc landscape : Final Technical report
    (Wildlife Institute of India, Dehradun, 2010) Rajapandian, K.; Anwar, M.; Goyal, S.P.
    Most rare and critically endangered species such as tiger (Panthera tigris) exist in human dominated landscapes as small, fragmented and isolated populations in most part of its range. A prerequisite for conservation efforts and management is to identify the factors which affect the distribution and abundance of the species of interest and connectivity between populations occupying the remaining fragments. Tiger populations have dramatically declined in recent years in the Indian part of Terai Arc Landscape (TAL). This top priority landscape for tiger conservation was once continuous across the Himalayan foothills but is now highly fragmented and most of the remaining large, intact habitats are located within protected areas. As tigers cannot sustain viable populations in small habitat fragments, an assessment of potential suitable habitat and connectivity among the remaining habitat patches is required to assess possibilities to ensure the creation of a single functioning metapopulation unit for tiger. Therefore, there is a need to monitor condition of tiger’s habitat (Smith et al. 1998). The effectiveness of potential corridors depends on the quality of habitat with in the corridor, the matrix that surrounds the corridor and redundancy of the corridor network (Collinge, 1998; Haddad et al. 2003). Out of ten corridors identified in TAL (Johnsingh et al., 2004), seven corridors were taken on priority basis for understanding quality and functionality assessment. Five and two corridors exist in Uttarakhand and Uttar Pradesh state of India, respectively. In view of understanding functionality of corridor, the objectives of this study was aimed (i) To describe the functional status (use and intensity) of the corridors with reference to tiger, (ii) To study the biological characteristics (vegetation composition, prey distribution and abundance, and disturbance status) that determines the corridor quality and (iii) To use, and to document the socioeconomic issues affecting the corridor existence and its use. Under this study, we describe basic data obtained for these seven corridors for their habitat characteristics, use by tiger and level of disturbance under Part I. This would provide base line information for comparison in future. Data analysis undertaken in Part II of this report are use of ecological modeling models to assess functionality of these corridors using remote sensing data and other aspects
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    Ecological Effects of road through sensitive habitats implications for wildlife conservation : Executive summary
    (Wildlife Institute of India, Dehradun, 2012) Rajvanshi, Asha; Mathur, V.B.; Pragatheesh
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    Field guide: Monitoring tigers, co-predators, prey and their habitats
    (Wildlife Institute of India, Dehradun, 2013) Jhala, Y.V.; Qureshi, Qamar; Gopal, Rajesh; Amin, R.
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    Dugong distribution, habitat and risks due to Fisheries and other anthropogenic activities in India
    (Wildlife Institute of India, Dehradun, 2013) Sivakumar, K.; Nair, A.
    The dugong (Dugong dugon), also called the sea cow, is one of the four surviving species in the order Sirenia, and it is the only existing species of herbivorous mammal that lives exclusively in the sea, including Indian waters. Conservation of the dugong, which is a flagship species, represents coastal conservation. This protected species occurs in the Gulf of Mannar, Palk Bay, Gulf of Kutch and Andaman and Nicobar Islands. The population of the dugong, which was once abundant, is assumed to have reduced to about 200 individuals in India. This number and the range of the dugong are believed to be continuously declining. Several reasons have been attributed to the decline in the dugong population, including sea grass habitat loss and degradation, gill netting, disease, water pollutants, indigenous use and poaching. This study was initiated to understand the dugong’s current distribution range and the magnitude of the anthropogenic threats faced by it and its habitat in India. The objectives include (1) determining the status and distribution of the dugong population in India, (2) understanding the risks faced by the dugong populations and their habitats, (3) assessing the status of artisanal fisheries in identified dugong habitats, (4) identifying the key areas where dugongs are present to conserve them and (5) understanding the attitude of fishermen towards conservation of dugongs. Three zones, namely the Gulf of Kutch, Andaman and Nicobar Islands and Gulf of Mannar–Palk Bay were identified as the study area on the basis of information published on dugong sightings, stranding records and seagrass presence. A standardised dugong catch/bycatch questionnaire developed by the CMS-UNEP Dugong MOU Panel was used for interview surveys after it was translated into regional languages. Region-specific threats to the dugong and its habitat were identified. Occupancy models were built in the program PRESENCE to identify critical dugong habitats using dugong sighting data from the past 5 years (2008 to 2012). The range of variables that influenced occupancy and detection were also assessed. Dugong occupancy was greatest in the Gulf of Mannar and Palk Bay, followed by the Andaman and Nicobar Islands, and lowest in the Gulf of Kutch. At present, the overall occupancy of the dugong in Indian waters is estimated to be 11% of the total surveyed area. Only 21% of the area sampled in Tamil Nadu was found to be occupied by dugongs. The corresponding proportion was 12% in the iii Andaman and Nicobar Islands and 1% in the Gulf of Kutch. Overall, the dugong distribution range has significantly decreased by about 85% in the distribution range of the dugong in India. Dugongs are also exist in regions outside the existing protected area (PA) network. Thus, conservation planning should also focus on dugong habitats outside PAs. Preventive measures, such as affording greater protection to dugongs and making fisheries sustainable with dugong friendly gear and craft, especially in the critical dugong habitats identified, are recommended. It is of the utmost importance to secure and strengthen community participation in the management of dugongs and their habitats in India. Model
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    Macroecology of terrestrial herpetofauna in Andaman and Nicobar Archipelago
    (Wildlife Institute of India, Dehradun, 2014) Harikrishnan, S.; Vasudevan, K.; Das, Abhijit; Choudhury, B.C.; Dutta, S.K.; Das, Indraneil
    The islands arc system of Andaman & Nicobar Islands situated in the Bay of Bengal is a major contributor to the overall high biodiversity figures of India. These islands are part of two global biodiversity hotspots and contain an impressive array of endemic flora and fauna. The herpetofauna of these islands have been the subject of explorations since the 19th century when European naturalists started natural history collections in these islands. However, our understanding of the terrestrial herpetofauna of these islands has been restricted to anecdotal observations, field records and taxonomic studies.. We conducted a four year survey of terrestrial herpetofauna in Andaman & Nicobar Islands. During this period 24 islands were surveyed for terrestrial herpetofauna. For the sake of completion, data from prior surveys and museum records were also compiled. We recorded 65 species of terrestrial reptiles and 17 species of amphibians from across the Andaman & Nicobar Islands. We present a presence absence matrix for all species recorded from various islands. As expected, the largest islands had the highest number of species and smaller islands within an island groups tended to have communities that were subsets of the larger island community. Several new records and some new species were discovered during our surveys. We found that the terrestrial herpetofauna in Andaman & Nicobar Islands occur in relatively high densities in undisturbed habitats, reaching as high as 3630 individuals per hectare in Little Andaman Island. Patterns in body size distributions were mostly right skewed, but inter taxa differences were observed in this. The shape of body size distribution did not change between Andaman Islands and Nicobar Islands. Distribution of body sizes within communities of co-existing species of frogs and lizards revealed a highly structured distribution, but not in the case of snakes. Species cooccurrence patterns showed inter taxa and inter island group differences. Differences in biogeographic and colonization histories of both groups of islands are suspected to be the reasons behind the observed species co-occurrence patterns. Abundance and geographic distribution patterns were less clearly defined for both frogs and lizards. We suspect that introduced species such as chital and Indian bullfrog might have adverse impacts on native herpetofauna in the Andaman & Nicobar Islands. We attempt a classification of island herpetofauna according to their vulnerability to extinction. We also assess the current conservation status according to the IUCN criteria and legal protection status according to WPA, 1972, and show that majority of species occurring in the Andaman & Nicobar Islands have not yet been assessed properly. We conclude this report by providing a checklist of the herpetofauna, other than turtles and crocodiles, of Andaman & Nicobar Islands.
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    Proposed mitigation measures for maintaining habitat contiguity and reducing wild animal mortality on NH6 and 7 in the Central Indian Landscape
    (Wildlife Institute of India, Dehradun, 2015) Habib, Bilal; Saxena, Akansha; Mondal, Indranil; Rajvanshi, Asha; Mathur, V.B.; Negi, H.S.
    Central India is considered to be the heart of India’s wildlife. It is home to some of India’s largest forest tracts, rich wildlife as well as indigenous people. It is also recognized by the National Tiger Conservation Authority, Government of India as a region with one of the best potentials for long-term tiger conservation. It harbours about 688 numbers of tigers in 19 tiger reserves (Jhala et al., 2015). Other than the tiger (Panthera tigris), the faunal diversity includes some of the most charismatic and endangered species such as the leopard (Panthera pardus), sloth bear (Melursus ursinus), gaur (Bos gaurus) and the hard ground swamp deer (Cervus duvaucelli). The tiger reserves and protected areas are connected by wildlife corridors falling outside the Protected Area network. These corridors can provide crucial connectivity and allow the free movement of tigers and other wildlife from one forest area to another, thereby connecting ‘source’ populations and ensuring demographic and genetic viability. This connectivity is also important to maintain the habitat quality of these contiguous forests for the other faunal species of the landscape. Any infra-structure development in this landscape should therefore consider the importance of the need to maintain connectivity between these animal populations. To identify specific animal crossing zones on NH-7 (Maharashtra and MP) and NH-6 (Maharashtra) passing through vital wildlife corridors and to suggest feasible locations for making underpasses and their dimensions, and in the light of these findings, review the earlier proposed mitigation measures. ii. To evaluate the barrier effect on different animal species due to factors such as road type (2 and 4-lane), traffic heterogeneity, traffic volume, vehicle speed and species characteristics at current traffic volume .
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    Conservation strategy and action plan for the marine turtles and their habitats in Puducherry
    (Wildlife Institute of India, Dehradun, 2017) Sivakumar, K.; Senthil Kumar, S.; Kumar, R.S.; Ramesh, C.; Adhavan, D.; Hatkar, P.; Bagaria, Priyamvada; Kakadia, D.; Jyothi, P.
    Puducherry, is a small but beautiful Union Territory of India, located along the southern east coast of India with coastline of 45 km. This coastline is being used for nesting of sea turtles, especially Olive Ridley and Green Sea turtles. Their sporadic nesting is at peak during November to February along Puducherry and Karaikal coasts. High sporadic nesting of sea turtles were observed on the beaches along Nallavadu/Moorthikuppam villages (Puducherry) and beaches around Arasalar River (Karaikal), therefore, these two beaches have been identified as ‘Important Sea turtle Habitats of Puducherry’ and recommended to be declared as the ‘Community or Conservation Reserves’ as per the Wildlife (Protection) Act, 1972. Further, it is recommended to manage these two beaches with active participation of local communities by promoting the turtle conservation as well as eco-tourism. Land use/land cover patterns along the coastal areas of Puducherry and Karailkal was significantly changed between 2004 and 2015. Larger portion of agricultural lands adjoining to nesting beach were converted for aquaculture and built up areas, that deterred sea turtles use of beaches for nesting. It was also found that arable lands along turtle nesting beaches were shrunk due to demand from other developing sectors such as aquaculture, tourism and real estate. Therefore, it is proposed to declare remaining critical sea turtle nesting beaches of Puducherry such as Nallavadu, Pannithittu, Narambi and Moorthikuppam villages (Puducherry) and beaches around Arasalar River (Karaikal) as ‘Eco-sensitive Zones’ under relevant sections of the Environment (Protection) Act, 1986. A significant proportion of world's Olive Ridley population migrates every winter from the Southern Indian ocean (near Sri Lanka) to Odisha, where they do mass nesting. Puducherry coastline is being used as a migratory route by these sea turtles. Off coast of Puducherry especially 60 - 400 km stretch from the shore were largely used by the migratory sea turtles during the month of October to April in every year. Further, few hundreds of sea turtles that are seems to be resident to Puducherry off coast, breed and nest along its coasts. Some of these breeding sea turtles have been incidentally killed by fishing nets especially between December and January. Turtles eggs are also predated by dogs and other animals on the shore. Therefore, it is proposed to strengthen the ongoing ex-situ turtle conservation programme of State Forest Department by facilitating the safe hatchings of turtle eggs through the artificial hatcheries. In this context, it is recommended to create two permanent hatcheries in these proposed two conservation reserves and involve local communities in the turtle monitoring and conservation programme. Moreover, Turtle Excluder Device (TED) should be made mandatory for all trawlers fishing along the Puducherry coasts. Beach erosion due to natural phenomena as well as urbanization, have reduced the nesting habitats and resulted in a drastic reduction in sea turtle nesting along Puducherry coast. Moreover, beach armouring with exotic plantations, artificial illumination and tourism are few other threats to the nesting beaches and hatchlings. Hence, it is recommended to continuously monitor the nesting beaches and avoid exotic plantation within 500 m from the high tide line and also manage vegetations on the beaches. Further, it is recommended to constitute an Authority with multi-stakeholders to protect the beaches and its biodiversity of Puducherry. It is also suggested to create a ‘Puducherry Sea Turtle and Coastal Research and Monitoring Cell’ at the Forest Department for the long term conservation of coastal biodiversity and livelihoods of people of Puducherry.