Browsing by Subject "Line transect sampling"

Now showing items 1-6 of 6

  • Cetacean abundance and distribution in European Atlantic shelf waters to inform conservation and management 

    Hammond, Philip Steven; Macleod, Kelly; Berggren, Per; Borchers, David Louis; Burt, M Louise; Cañadas, Ana; Desportes, Genevieve; Donovan, Greg P; Gilles, Anita; Gillespie, Douglas Michael; Gordon, Jonathan Charles David; Hiby, Lex; Kuklik, Iwona; Leaper, Russell; Lehnert, Kristina; Leopold, Mardik; Lovell, Philip; Øien, Nils; Paxton, Charles G. M.; Ridoux, Vincent; Rogan, Emer; Samarra, Filipa Isabel Pereira; Scheidat, Meike; Sequeira, Marina; Siebert, Ursula; Skov, Henrik; Swift, Rene James; Tasker, Mark; Teilmann, Jonas; Van Canneyt, Olivier; Vázquez, José Antonio (2013-08) - Journal article
    The European Union (EU) Habitats Directive requires Member States to monitor and maintain at favourable conservation status those species identified to be in need of protection, including all cetaceans. In July 2005 we ...

  • Design and analysis of line transect surveys for primates 

    Buckland, Stephen Terrence; Plumptre, A J; Thomas, Len; Rexstad, Eric A (2010-10) - Journal article
    Line transect surveys are widely used for estimating abundance of primate populations. The method relies on a small number of key assumptions, and if these are not met, substantial bias may occur. For a variety of reasons, ...

  • Double-observer line transect methods : levels of independence 

    Buckland, Stephen Terrence; Laake, Jeffrey L.; Borchers, David Louis (2010-03) - Journal article
    Double-observer line transect methods are becoming increasingly widespread, especially for the estimation of marine mammal abundance from aerial and shipboard surveys when detection of animals on the line is uncertain. The ...

  • Large scale surveys for cetaceans : line transect assumptions, reliability of abundance estimates and improving survey efficiency – A response to MacLeod 

    Hammond, Philip Steven; Gillespie, Douglas Michael; Lovell, Philip; Samarra, Filipa Isabel Pereira; Swift, Rene James; Macleod, Kelly; Tasker, Mark L; Berggren, Per; Borchers, David Louis; Burt, M Louise; Paxton, Charles G. M.; Canadas, Ana; Desportes, Genevieve; Donovan, Greg P; Gilles, Anita; Lehnert, Kristina; Siebert, Ursula; Gordon, Jonathan Charles David; Leaper, Russell; Leopold, Mardik; Scheidat, Meike; Oien, Nils; Ridoux, Vincent; Rogan, Emer; Skov, Henrik; Teilmann, Jonas; Van Canneyt, Olivier; Vazquez, Jose Antonio (2014-02) - Journal item

  • Model-based distance sampling 

    Buckland, Stephen Terrence; Oedekoven, Cornelia Sabrina; Borchers, David Louis (2016-03) - Journal article
    Conventional distance sampling adopts a mixed approach, using model-based methods for the detection process, and design-based methods to estimate animal abundance in the study region, given estimated probabilities of ...

  • Spatial models for distance sampling data : recent developments and future directions 

    Miller, David Lawrence; Burt, M Louise; Rexstad, Eric; Thomas, Len (2013-11) - Journal article
    Our understanding of a biological population can be greatly enhanced by modelling their distribution in space and as a function of environmental covariates. Density surface models consist of a spatial model of the abundance ...