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  • Landscape features and crustacean prey as predictors of the Southern river otter distribution in Chile.

    Author(s) : Sepúlveda, M. A.Bartheld, J. L.Meynard, C.Benavides, M.Astorga, C.Parra, D.Medina-Vogel, G.

    Author Affiliation : Comité Nacional Pro Defensa de la Fauna y Flora, Valdivia, Chile.

    Author Email : maximiliano.sepulveda@gmail.com

    Journal article : Animal Conservation 2009 Vol.12 No.6 pp.522-530 ref.many

    Abstract : Understanding the processes that affect freshwater ecosystems at the watershed level is fundamental for the conservation and management of river ottersottersSubject Category: Organism Names
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    . During 2 consecutive years, we surveyed the occurrence of the Southern river otter Lontra provocax and its main preypreySubject Category: Organism Groups
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    (crustaceans) in a watershed of 9900 km2 in the Chilean temperate forest. We modeled predator and prey distributions with a variety of statistical techniques by relating a set of environmental predictors to species occurrence records. Otter and crustaceans were associated with areas of intermediate to low human disturbance with a mosaic of riparian vegetationriparian vegetationSubject Category: Vegetation Types
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    densities, mainly at low altitudes. The singularity of the Andean Range, with a very marked elevation gradient and oligotrophic watercourses in the higher areas, created more vulnerable conditions for otter presence because prey abundances were limited in those areas. Human impacts affected otter populations at a landscapelandscapeSubject Category: Miscellaneous
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    scale through the presence of main roads, as these were mostly located in lower parts of the watershed where otters have their primary habitat. These results point to the importance of land managementland managementSubject Category: Disciplines, Occupations and Industries
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    and protection of low-elevation areas where otters still occur to ensure the long-term viability of its freshwater populations.

    ISSN : 1367-9430

    DOI : 10.1111/j.1469-1795.2009.00304.x

    Record Number : 20093342339

    Publisher : Blackwell Publishing

    Location of publication : Oxford

    Country of publication : UK

    Language of text : English

    Indexing terms for this abstract:

    Organism descriptor(s) : CrustaceacrustaceaSubject Category: Organism Names
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    , Lutra provocaxlutra provocaxSubject Category: Organism Names
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    , ottersottersSubject Category: Organism Names
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    Descriptor(s) : aquatic animalsaquatic animalsSubject Category: Organism Groups
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    , aquatic organismsaquatic organismsSubject Category: Organism Groups
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    , environmental impactenvironmental impactSubject Category: Properties
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    , forestsforestsSubject Category: Habitats
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    , freshwater ecologyfreshwater ecologySubject Category: Miscellaneous
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    , habitatshabitatsSubject Category: Habitats
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    , human activityhuman activitySubject Category: Miscellaneous
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    , land managementland managementSubject Category: Disciplines, Occupations and Industries
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    , landscapelandscapeSubject Category: Miscellaneous
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    , preypreySubject Category: Organism Groups
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    , riparian vegetationriparian vegetationSubject Category: Vegetation Types
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    , watershedswatershedsSubject Category: Topographic Features
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    , wild animalswild animalsSubject Category: Organism Groups
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    , wildlife conservationwildlife conservationSubject Category: Disciplines, Occupations and Industries
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    , wildlife managementwildlife managementSubject Category: Disciplines, Occupations and Industries
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    Identifier(s) : aquatic species, catchment areas, environmental effects, freshwater biology, Lontra provocax, temperate forests

    Geographical Location(s) : ChilechileSubject Category: Geographic Entities
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    Broader term(s) : arthropodsarthropodsSubject Category: Organism Names
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    , invertebratesinvertebratesSubject Category: Organism Names
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    , animalsanimalsSubject Category: Organism Names
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    , eukaryoteseukaryotesSubject Category: Organism Names
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    , LutralutraSubject Category: Organism Names
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    , MustelidaemustelidaeSubject Category: Organism Names
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    , FissipedafissipedaSubject Category: Organism Names
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    , carnivorescarnivoresSubject Category: Organism Names
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    , mammalsmammalsSubject Category: Organism Names
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    , vertebratesvertebratesSubject Category: Organism Names
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    , ChordatachordataSubject Category: Organism Names
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    , Andean Groupandean groupSubject Category: Institutions and Organisations
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    , APEC countriesapec countriesSubject Category: Institutions and Organisations
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    , Developing Countriesdeveloping countriesSubject Category: Miscellaneous
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    , Latin Americalatin americaSubject Category: Geographic Entities
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    , AmericaamericaSubject Category: Geographic Entities
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    , South Americasouth americaSubject Category: Geographic Entities
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    , Threshold Countriesthreshold countriesSubject Category: Miscellaneous
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