Estimating the population size of specialised solitary bees
(2008) In Ecological Entomology 33(2). p.232-238- Abstract
- 1. Reliable methods for quantifying population size are crucial for strategies to conserve endangered wild-bee species. Estimates of population size obtained through survey walks were compared with estimates obtained through mark-recapture studies in 10 populations of the red-listed solitary bee Andrena hattorfiana in southern Sweden. 2. The mean number of bees observed during survey walks was strongly correlated with estimates of population size obtained with mark-recapture. It was found that 5.5-23.4% (mean 13.4%) of the total population was observed during an average survey walk. 3. One component in mark-recapture analysis is the measure of survival of individuals. In the largest bee population, females of A. hattorfiana that emerged in... (More)
- 1. Reliable methods for quantifying population size are crucial for strategies to conserve endangered wild-bee species. Estimates of population size obtained through survey walks were compared with estimates obtained through mark-recapture studies in 10 populations of the red-listed solitary bee Andrena hattorfiana in southern Sweden. 2. The mean number of bees observed during survey walks was strongly correlated with estimates of population size obtained with mark-recapture. It was found that 5.5-23.4% (mean 13.4%) of the total population was observed during an average survey walk. 3. One component in mark-recapture analysis is the measure of survival of individuals. In the largest bee population, females of A. hattorfiana that emerged in early season were found to forage for pollen on average 18.4 days. 4. The findings suggest that during large-scale surveys, for example re-inventories for red-listed species, the population size of solitary bees can be quantified reliably and effectively by performing survey walks in a two-step process. The first step consists of survey walks to establish the relationship between number of bee observations per survey walk and mark-recapture population size for a small set of populations. In the second, simple observation survey walks can be performed for a large set of populations. In each population of A. hattorfiana, it is recommended that at least six survey walks are performed. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/1193629
- author
- Larsson, Magnus and Franzén, Markus LU
- organization
- publishing date
- 2008
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- mark, bee conservation, apoidea, Andrena hattorfiana, apiformes, recapture, oligolecty, wild bee
- in
- Ecological Entomology
- volume
- 33
- issue
- 2
- pages
- 232 - 238
- publisher
- Wiley-Blackwell
- external identifiers
-
- wos:000253710000010
- scopus:40349112833
- ISSN
- 1365-2311
- DOI
- 10.1111/j.1365-2311.2007.00956.x
- language
- English
- LU publication?
- yes
- additional info
- The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Animal Ecology (Closed 2011) (011012001)
- id
- 9c3e1c3c-a7cf-4914-919d-5346975dda4f (old id 1193629)
- date added to LUP
- 2016-04-01 11:33:39
- date last changed
- 2022-04-05 01:46:02
@article{9c3e1c3c-a7cf-4914-919d-5346975dda4f,
abstract = {{1. Reliable methods for quantifying population size are crucial for strategies to conserve endangered wild-bee species. Estimates of population size obtained through survey walks were compared with estimates obtained through mark-recapture studies in 10 populations of the red-listed solitary bee Andrena hattorfiana in southern Sweden. 2. The mean number of bees observed during survey walks was strongly correlated with estimates of population size obtained with mark-recapture. It was found that 5.5-23.4% (mean 13.4%) of the total population was observed during an average survey walk. 3. One component in mark-recapture analysis is the measure of survival of individuals. In the largest bee population, females of A. hattorfiana that emerged in early season were found to forage for pollen on average 18.4 days. 4. The findings suggest that during large-scale surveys, for example re-inventories for red-listed species, the population size of solitary bees can be quantified reliably and effectively by performing survey walks in a two-step process. The first step consists of survey walks to establish the relationship between number of bee observations per survey walk and mark-recapture population size for a small set of populations. In the second, simple observation survey walks can be performed for a large set of populations. In each population of A. hattorfiana, it is recommended that at least six survey walks are performed.}},
author = {{Larsson, Magnus and Franzén, Markus}},
issn = {{1365-2311}},
keywords = {{mark; bee conservation; apoidea; Andrena hattorfiana; apiformes; recapture; oligolecty; wild bee}},
language = {{eng}},
number = {{2}},
pages = {{232--238}},
publisher = {{Wiley-Blackwell}},
series = {{Ecological Entomology}},
title = {{Estimating the population size of specialised solitary bees}},
url = {{http://dx.doi.org/10.1111/j.1365-2311.2007.00956.x}},
doi = {{10.1111/j.1365-2311.2007.00956.x}},
volume = {{33}},
year = {{2008}},
}