Information thresholds, habitat loss and population persistence in breeding birds
نویسندگان
چکیده
منابع مشابه
Ordinations of Habitat Relationships among Breeding Birds
I N an attempt to express habitat relationships in a new way, I have applied two methods of multivariate analysis to a large set of data pertaining to the habitats of 46 species of common breeding birds. The question asked was : How do these species distribute themselves with respect to the structure of the vegetation? This required (1) devising field techniques that would give quantitative mea...
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A critical threshold exists when the relationship between the amount of suitable habitat and population density or probability of occurrence exhibits a sudden, disproportionate decline as habitat is lost. Critical thresholds are predicted by a variety of modeling approaches, but empirical support has been limited or lacking. We looked for critical thresholds in two pool-breeding amphibians that...
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Millions of birds migrate to and from the Arctic each year, but rapid climate change in the High North could strongly affect where species are able to breed, disrupting migratory connections globally. We modelled the climatically suitable breeding conditions of 24 Arctic specialist shorebirds and projected them to 2070 and to the mid-Holocene climatic optimum, the world's last major warming eve...
متن کاملHabitat fragmentation, rapid evolution and population persistence
Associations between extinction and habitat fragmentation have been modelled and described, but we document the first clear mechanistic link between habitat fragmentation and population persistence, demonstrating that a rapid evolutionary response to fragmentation can yield conditions wherein some populations are more vulnerable to extinction. Historical differences in the partitioning and tenu...
متن کاملInformation-Mediated Allee Effects in Breeding Habitat Selection.
Social information is used widely in breeding habitat selection and provides an efficient means for individuals to select habitat, but the population-level consequences of this process are not well explored. At low population densities, efficiencies may be reduced because there are insufficient information providers to cue high-quality habitat. This constitutes what we call an information-media...
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ژورنال
عنوان ژورنال: Oikos
سال: 2016
ISSN: 0030-1299,1600-0706
DOI: 10.1111/oik.03703