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Both population size and patch quality affect local extinctions and colonizations.

Franzén, Markus LU and Nilsson, Sven LU (2010) In Royal Society of London. Proceedings B. Biological Sciences 277. p.79-85
Abstract
Currently, the habitat of many species is fragmented, resulting in small local populations with individuals occasionally dispersing between the remaining habitat patches. In a solitary bee metapopulation, extinction probability was related to both local bee population sizes and pollen resources measured as host plant population size. Patch size, on the other hand, had no additional predictive power. The turnover rate of local bee populations in 63 habitat patches over 4 years was high, with 72 extinction events and 31 colonization events, but the pollen plant population was stable with no extinctions or colonizations. Both pollen resources and bee populations had strong and independent effects on extinction probability, but connectivity... (More)
Currently, the habitat of many species is fragmented, resulting in small local populations with individuals occasionally dispersing between the remaining habitat patches. In a solitary bee metapopulation, extinction probability was related to both local bee population sizes and pollen resources measured as host plant population size. Patch size, on the other hand, had no additional predictive power. The turnover rate of local bee populations in 63 habitat patches over 4 years was high, with 72 extinction events and 31 colonization events, but the pollen plant population was stable with no extinctions or colonizations. Both pollen resources and bee populations had strong and independent effects on extinction probability, but connectivity was not of importance. Colonizations occurred more frequently within larger host plant populations. For metapopulation survival of the bee, large pollen plant populations are essential, independent of current bee population size. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Royal Society of London. Proceedings B. Biological Sciences
volume
277
pages
79 - 85
publisher
Royal Society
external identifiers
  • wos:000272028900012
  • scopus:73949118374
ISSN
1471-2954
DOI
10.1098/rspb.2009.1584
language
English
LU publication?
yes
id
e3e86d39-3a48-4a38-b1d9-8fa4bb16fc8e (old id 1500864)
date added to LUP
2009-11-19 12:26:26
date last changed
2018-05-29 09:55:19
@article{e3e86d39-3a48-4a38-b1d9-8fa4bb16fc8e,
  abstract     = {Currently, the habitat of many species is fragmented, resulting in small local populations with individuals occasionally dispersing between the remaining habitat patches. In a solitary bee metapopulation, extinction probability was related to both local bee population sizes and pollen resources measured as host plant population size. Patch size, on the other hand, had no additional predictive power. The turnover rate of local bee populations in 63 habitat patches over 4 years was high, with 72 extinction events and 31 colonization events, but the pollen plant population was stable with no extinctions or colonizations. Both pollen resources and bee populations had strong and independent effects on extinction probability, but connectivity was not of importance. Colonizations occurred more frequently within larger host plant populations. For metapopulation survival of the bee, large pollen plant populations are essential, independent of current bee population size.},
  author       = {Franzén, Markus and Nilsson, Sven},
  issn         = {1471-2954},
  language     = {eng},
  pages        = {79--85},
  publisher    = {Royal Society},
  series       = {Royal Society of London. Proceedings B. Biological Sciences},
  title        = {Both population size and patch quality affect local extinctions and colonizations.},
  url          = {http://dx.doi.org/10.1098/rspb.2009.1584},
  volume       = {277},
  year         = {2010},
}