Density dependence, regulation and open‐closed populations: insights from the wigeon, Anas penelope

摘要: We investigated whether the degree of exchange with other populations affects occurrence density-dependent regulation. contrasted data from an Icelandic and a Finnish population breeding wigeons (Anas penelope), former being more closed than later. looked for density dependence in time-series success is dependent plays role dynamics Time-series analysis did not reveal regulation either population. Nor we find evidence However, growth rate appeared to be strongly on previous year but open Our findings underline how important it link study potential stabilizing mechanisms order understand also suggest that may difficult task achieve sustainability waterfowl harvesting, theoretical basis which