Positive association in nesting mallard and teal: resource limitation and interspecific competition in the light of sensus data and a depletion experiment

Johan Elmberg, Kjell Sjöberg, Hannu Pöysä, Petri Nummi

Forskningsoutput: KonferensbidragSammanfattning

Sammanfattning

Wing-clipped mallards were introduced on breeding lakes before the arrival of teal to induce resource limitation and interspecific competition, hypothesized to reduce lake use by teal. Experimental lakes had 2.9-8.0 times higher pair density of mallards than controls, but there was no negative response by teal to the treatment. We believe this is the first combined observational-experimental demonstration of lack of interspecific competition in waterfowl. Our results indicate that heterospecific attraction may affect co-existence in dabbling ducks.

OriginalspråkEngelska
StatusPublicerad - 2000
Externt publiceradJa
EvenemangSecond North American Duck Symposium & Workshop, October 11-15, 2000, Saskatoon, Saskatchevan, Canada -
Varaktighet: 1980-jan.-01 → …

Konferens

KonferensSecond North American Duck Symposium & Workshop, October 11-15, 2000, Saskatoon, Saskatchevan, Canada
Period80-01-01 → …

Nationell ämneskategori

  • Zoologi (10608)

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