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Small local population sizes and high habitat patch fidelity in a specialised solitary bee.

Franzén, Markus LU ; Larsson, Magnus and Nilsson, Sven LU (2009) In Journal of Insect Conservation 13(1). p.89-95
Abstract
Andrena hattorfiana is a rare solitary bee which has declined during the last decades throughout western Europe. It is specialised to forage pollen from plants of the family Dipsacaceae. Knowledge of distribution, dispersal

propensity, and local population sizes is essential for successful conservation of A. hattorfiana. The investigated local bee populations (n = 78) were dominated by small local populations and 60% were smaller than 10 female individuals and 80% were smaller than 50 female individuals. The area of the median occupied habitat patch was 1.25 hectare and harboured 7 female bees. Mark-releaserecapture studies of female A. hattorfiana revealed a sedentary behaviour. Among pollen-foraging female bees the

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Andrena hattorfiana is a rare solitary bee which has declined during the last decades throughout western Europe. It is specialised to forage pollen from plants of the family Dipsacaceae. Knowledge of distribution, dispersal

propensity, and local population sizes is essential for successful conservation of A. hattorfiana. The investigated local bee populations (n = 78) were dominated by small local populations and 60% were smaller than 10 female individuals and 80% were smaller than 50 female individuals. The area of the median occupied habitat patch was 1.25 hectare and harboured 7 female bees. Mark-releaserecapture studies of female A. hattorfiana revealed a sedentary behaviour. Among pollen-foraging female bees the

average registered distance moved was 46 m. The patch emigration rate was about 2%, with an observed maximum colonization distance of 900 m. Only 10% of the individuals crossed areas without the pollen plant within grassland

patches, such as unpaved roads, stone walls and small treestands, even if these areas were less than 10 m wide. This study shows that solitary bees can occur in local populations of extremely small size and they have a sedentary behaviour. These are features that usually increase the risk

of local population extinction. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Andrena hattorfiana, Knautia arvensis, Apoidea, Oligolecty, Wild-bee, Sedentary, Metapopulation, Dispersal, Mark-recapture
in
Journal of Insect Conservation
volume
13
issue
1
pages
89 - 95
publisher
Springer
external identifiers
  • wos:000262125000009
  • scopus:58149357512
ISSN
1366-638X
DOI
10.1007/s10841-007-9123-4
language
English
LU publication?
yes
id
a71c6552-2b59-4c5d-9b2b-53bbd19a2351 (old id 1278892)
date added to LUP
2009-02-02 13:24:02
date last changed
2017-01-01 04:49:07
@article{a71c6552-2b59-4c5d-9b2b-53bbd19a2351,
  abstract     = {Andrena hattorfiana is a rare solitary bee which has declined during the last decades throughout western Europe. It is specialised to forage pollen from plants of the family Dipsacaceae. Knowledge of distribution, dispersal<br/><br>
propensity, and local population sizes is essential for successful conservation of A. hattorfiana. The investigated local bee populations (n = 78) were dominated by small local populations and 60% were smaller than 10 female individuals and 80% were smaller than 50 female individuals. The area of the median occupied habitat patch was 1.25 hectare and harboured 7 female bees. Mark-releaserecapture studies of female A. hattorfiana revealed a sedentary behaviour. Among pollen-foraging female bees the<br/><br>
average registered distance moved was 46 m. The patch emigration rate was about 2%, with an observed maximum colonization distance of 900 m. Only 10% of the individuals crossed areas without the pollen plant within grassland<br/><br>
patches, such as unpaved roads, stone walls and small treestands, even if these areas were less than 10 m wide. This study shows that solitary bees can occur in local populations of extremely small size and they have a sedentary behaviour. These are features that usually increase the risk<br/><br>
of local population extinction.},
  author       = {Franzén, Markus and Larsson, Magnus and Nilsson, Sven},
  issn         = {1366-638X},
  keyword      = {Andrena hattorfiana,Knautia arvensis,Apoidea,Oligolecty,Wild-bee,Sedentary,Metapopulation,Dispersal,Mark-recapture},
  language     = {eng},
  number       = {1},
  pages        = {89--95},
  publisher    = {Springer},
  series       = {Journal of Insect Conservation},
  title        = {Small local population sizes and high habitat patch fidelity in a specialised solitary bee.},
  url          = {http://dx.doi.org/10.1007/s10841-007-9123-4},
  volume       = {13},
  year         = {2009},
}