Read e-book online Population Biology of Passerine Birds: An Integrated PDF
By Lars von Haartman (auth.), Jacques Blondel, Andrew Gosler, Jean-Dominique Lebreton, Robin McCleery (eds.)
Population Biology of Passerine Birds is an updated synthesis of the newest advancements in its box, particularly within the framework of contemporary existence historical past theories. significant issues comprise quantitative genetics, ecological body structure, the research of social constructions utilizing separately marked birds within the wild, and at last biometry, which permits to quantify such very important parameters as survival at diverse phases of lifestyles and to create a version of the general demography of the populations.
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Additional info for Population Biology of Passerine Birds: An Integrated Approach
8 number of breeding females cold winter ------------------------------------- ... _--- ... 0255 respectively). 1 % of the variation in female annual survival is explained by variation in winter type and breeding population size. Reproduction and female survival For females, we have also studied the possible effect of reproduction on overwinter survival. We have used clutch-size as the measure of the investment a female is willing to make. In this analysis we have included all females identified with a successful (Le.
I . ~. - 0. 6I 1965 I 70 75 80 8 15 Fig. 6. Trends of hatching success in the course of the years. 0344) decrease significantly. 180). These findings indicate that breeding success mainly depends on local rather than on general conditions. Breeding success varies strongly during the season. Figure 7 shows the two components of breeding success in relation to relative hatching date. Dates over 25 refer to repeat and second clutches. In Oosterhout hatching success declines slightly and fledging success more strongly during the first-brood period.
D. D. 3). Differences between areas are more extreme than in the Great Tit that has the same overall pattern although at a higher level. =44-60%), suggesting again that the former are the more favourable habitats. The two parts of Vlieland show a fourfold difference in Blue Tit breeding density in favour of the part with the lowest Great Tit density, suggesting that interspecific competition may play a role. Here, too, for both species the part with the highest density is the one where density is least variable.
Population Biology of Passerine Birds: An Integrated Approach by Lars von Haartman (auth.), Jacques Blondel, Andrew Gosler, Jean-Dominique Lebreton, Robin McCleery (eds.)