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Träfflista för sökning "WFRF:(Gurd D.B.) "

Sökning: WFRF:(Gurd D.B.)

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1.
  • Arzel, Celiné, et al. (författare)
  • Experimental functional response and inter-individual variation in foraging rate of teal (Anas crecca)
  • 2007
  • Ingår i: Behavioural Processes. - 0376-6357 .- 1872-8308. - 0376-6357 ; 75:1, s. 66-71
  • Tidskriftsartikel (refereegranskat)abstract
    • The functional response, i.e. the change in per capita food intake rate per time unit with changed food availability, is a widely used too] for understanding the ecology and behaviour of animals. However, waterfowl remain poorly explored in this context. In an aviary experiment we derived a functional response curve for teal (Anas crecca) foraging on rice (Oryza sativa) seeds. We found a linear relationship between intake rate and seed density, as expected for a filter-feeder. At high seed densities we found a threshold, above which intake rate still increased linearly but with a lower slope, possibly reflecting a switch from filter-feeding to a scooping foraging mode. The present study shows that food intake rate in teal is linearly related to food availability within the range of naturally occurring seed densities, a finding with major implications for management and conservation of wetland habitats.
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2.
  • Arzel, Celiné, et al. (författare)
  • Experimental functional response and inter-individual variation in foraging rate of teal (Anas crecca)
  • 2007
  • Ingår i: Behavioural Processes. - : Elsevier. - 0376-6357 .- 1872-8308. ; 75:1, s. 66-71
  • Tidskriftsartikel (refereegranskat)abstract
    • The functional response, i.e. the change in per capita food intake rate per time unit with changed food availability, is a widely used too] for understanding the ecology and behaviour of animals. However, waterfowl remain poorly explored in this context. In an aviary experiment we derived a functional response curve for teal (Anas crecca) foraging on rice (Oryza sativa) seeds. We found a linear relationship between intake rate and seed density, as expected for a filter-feeder. At high seed densities we found a threshold, above which intake rate still increased linearly but with a lower slope, possibly reflecting a switch from filter-feeding to a scooping foraging mode. The present study shows that food intake rate in teal is linearly related to food availability within the range of naturally occurring seed densities, a finding with major implications for management and conservation of wetland habitats.
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  • Resultat 1-2 av 2
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tidskriftsartikel (2)
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refereegranskat (2)
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Arzel, Céline (2)
Guillemain, M. (2)
Gurd, D.B. (2)
Fritz, H. (2)
Arnaud, A. (2)
Pin, C. (2)
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Bosca, F. (2)
Elmberg, Johan (1)
Elmberg, Johan, 1960 ... (1)
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