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Hem Sagar Baral - One of the best experts on this subject based on the ideXlab platform.

  • ecological correlates of himalayan musk deer moschus Leucogaster
    Ecology and Evolution, 2019
    Co-Authors: Paras Bikram Singh, Pradip Saud, Douglas S Cram, Kumar P Mainali, Arjun Thapa, Nar Bahadur Chhetri, Laxman Prasad Poudyal, Hem Sagar Baral
    Abstract:

    Himalayan musk deer (Moschus Leucogaster; hereafter musk deer) are endangered as a result of poaching and habitat loss. The species is nocturnal, crepuscular, and elusive, making direct observation of habitat use and behavior difficult. However, musk deer establish and repeatedly use the same latrines for defecation. To quantify musk deer habitat correlates, we used observational spatial data based on presence-absence of musk deer latrines, as well as a range of fine spatial-scale ecological covariates. To determine presence-absence of musk deer, we exhaustively searched randomly selected forest trails using a 20-m belt transect in different study sites within the Neshyang Valley in the Annapurna Conservation Area. In a subsequent way, study sites were classified as habitat or nonhabitat for musk deer. A total of 252 plots, 20 × 20 m, were systematically established every 100 m along 51 transects (each ~0.5 km long) laid out at different elevations to record a range of ecological habitat variables. We used mixed-effect models and principal component analysis to characterize relationships between deer presence-absence data and habitat variables. We confirmed musk deer use latrines in forests located at higher elevations (3,200-4,200 m) throughout multiple seasons and years. Himalayan birch (Betula utilis) dominated forest, mixed Himalayan fir (Abies spectabilis), and birch forest were preferred over pure Himalayan fir and blue pine (Pinus wallichiana) forest. Greater crown cover and shrub diversity were associated with the presence of musk deer whereas tree height, diameter, and diversity were weakly correlated. Topographical attributes including aspect, elevation, distance to water source, and slope were also discriminated by musk deer. Over- and understory forest management can be used to protect forests likely to have musk deer as predicted by the models to ensure long-term conservation of this rare deer.

Paras Bikram Singh - One of the best experts on this subject based on the ideXlab platform.

  • ecological correlates of himalayan musk deer moschus Leucogaster
    Ecology and Evolution, 2019
    Co-Authors: Paras Bikram Singh, Pradip Saud, Douglas S Cram, Kumar P Mainali, Arjun Thapa, Nar Bahadur Chhetri, Laxman Prasad Poudyal, Hem Sagar Baral
    Abstract:

    Himalayan musk deer (Moschus Leucogaster; hereafter musk deer) are endangered as a result of poaching and habitat loss. The species is nocturnal, crepuscular, and elusive, making direct observation of habitat use and behavior difficult. However, musk deer establish and repeatedly use the same latrines for defecation. To quantify musk deer habitat correlates, we used observational spatial data based on presence-absence of musk deer latrines, as well as a range of fine spatial-scale ecological covariates. To determine presence-absence of musk deer, we exhaustively searched randomly selected forest trails using a 20-m belt transect in different study sites within the Neshyang Valley in the Annapurna Conservation Area. In a subsequent way, study sites were classified as habitat or nonhabitat for musk deer. A total of 252 plots, 20 × 20 m, were systematically established every 100 m along 51 transects (each ~0.5 km long) laid out at different elevations to record a range of ecological habitat variables. We used mixed-effect models and principal component analysis to characterize relationships between deer presence-absence data and habitat variables. We confirmed musk deer use latrines in forests located at higher elevations (3,200-4,200 m) throughout multiple seasons and years. Himalayan birch (Betula utilis) dominated forest, mixed Himalayan fir (Abies spectabilis), and birch forest were preferred over pure Himalayan fir and blue pine (Pinus wallichiana) forest. Greater crown cover and shrub diversity were associated with the presence of musk deer whereas tree height, diameter, and diversity were weakly correlated. Topographical attributes including aspect, elevation, distance to water source, and slope were also discriminated by musk deer. Over- and understory forest management can be used to protect forests likely to have musk deer as predicted by the models to ensure long-term conservation of this rare deer.

F.p. Campos - One of the best experts on this subject based on the ideXlab platform.

Jose Roberto Verani - One of the best experts on this subject based on the ideXlab platform.

  • dieta de sula Leucogaster boddaert sulidae aves nas ilhas moleques do sul florianopolis santa catarina brasil
    Revista Brasileira De Zoologia, 2005
    Co-Authors: Joaquim Olinto Branco, Hélio Augusto Alves Fracasso, Marcos S. Bovendorp, Irece Farina Machado, Jose Roberto Verani
    Abstract:

    Dieta de Sula Leucogaster Boddaert (Sulidae, Aves), nas Ilhas Moleques do Sul, Florianopolis, SC. Sula Leucogaster (Boddaert, 1783) nidifica em varias ilhas costeiras e oceânicas do Brasil, e utiliza como alimento uma grande diversidade de presas, capturadas em mergulhos rasos, entre 10 a 15 m, alem da ictiofauna descartada na pesca de camaroes. Este trabalho teve como objetivo fornecer informacoes basicas sobre a alimentacao natural do atoba-marrom, atraves dos regurgitos coletados entre os anos de 2000 a 2004, nas Ilhas Moleques do Sul. Foram registradas a ocorrencia de 35 especies-presas em 257 regurgitos, totalizando 26,5 kg. Apesar da marcante sazonalidade na dieta de S. Leucogaster , as maiores frequencias de regurgitos foram obtidas no verao, onde os peixes Sciaenidae, Engraulidae e Batrachoididae foram as presas mais exploradas. Alimentacao natural; atoba-marrom; aves marinhas

  • Dieta de Sula Leucogaster Boddaert (Sulidae, Aves), nas Ilhas Moleques do Sul, Florianópolis, Santa Catarina, Brasil Diet of Sula Leucogaster Boddaert, in the Moleques do Sul Island, Florianópolis, Santa Catarina, Brazil
    Sociedade Brasileira de Zoologia, 2005
    Co-Authors: Joaquim Olinto Branco, Hélio Augusto Alves Fracasso, Marcos S. Bovendorp, Irece Farina Machado, Jose Roberto Verani
    Abstract:

    Dieta de Sula Leucogaster Boddaert (Sulidae, Aves), nas Ilhas Moleques do Sul, Florianópolis, SC. Sula Leucogaster (Boddaert, 1783) nidifica em várias ilhas costeiras e oceânicas do Brasil, e utiliza como alimento uma grande diversidade de presas, capturadas em mergulhos rasos, entre 10 a 15 m, além da ictiofauna descartada na pesca de camarões. Este trabalho teve como objetivo fornecer informações básicas sobre a alimentação natural do atobá-marrom, através dos regurgitos coletados entre os anos de 2000 a 2004, nas Ilhas Moleques do Sul. Foram registradas a ocorrência de 35 espécies-presas em 257 regurgitos, totalizando 26,5 kg. Apesar da marcante sazonalidade na dieta de S. Leucogaster, as maiores freqüências de regurgitos foram obtidas no verão, onde os peixes Sciaenidae, Engraulidae e Batrachoididae foram as presas mais exploradas.Sula Leucogaster (Boddaert, 1783) breeds in some coastal and oceanic islands of Brazil, and uses as food a great diversity of prey, captured in flat diving, between 10 to 15 m, beyond ictiofauna discarded in shrimps fisheries. This work aims to supply basic information on the natural feeding of the Brown Booby, through the natural regurgitation collected between 2000 to 2004, in the Moleques do Sul Islands. It was registered the occurrence of 35 species-prey in 257 pellets, totalizing 26,5 kg. Despite the strong seazonality in the diet of S. Leucogaster, the biggest frequencies of regurgitations had been gotten in the summer, where the Sciaenidae, Engraulidae and Batrachoididae were the more explored prey

Reinaldo José Da Silva - One of the best experts on this subject based on the ideXlab platform.