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Scharlemann_2003_Long_term_declines_in_eggshell_thickness_Ardea.pdf (343.78 kB)

Long-term declines in eggshell thickness of dutch thrushes Turdus spp.

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posted on 2023-06-08, 13:43 authored by J P W Scharlemann
The thickness of the eggshells of Blackbird Turdus merula, Song Thrush T. philomelos, Mistle Thrush T. viscivorus, and Ring Ouzel T. torquatus has previously been shown to have declined in Britain based upon measurements of eggshells in museum collections. A study of eggs of three of the same species collected in the Netherlands shows evidence of a decline in eggshell thickness of similar magnitude to that found in Britain for these species. This is the first time that eggshell thickness declines of such long duration have been found in two geographically separate areas. The cause of the decline is unknown, but began before the introduction of organochlorine pesticides.

History

Publication status

  • Published

File Version

  • Published version

Journal

Ardea

ISSN

0373-2266

Issue

2

Volume

91

Page range

205-211

Department affiliated with

  • Evolution, Behaviour and Environment Publications

Full text available

  • Yes

Peer reviewed?

  • Yes

Legacy Posted Date

2012-11-16

First Open Access (FOA) Date

2012-11-16

First Compliant Deposit (FCD) Date

2012-11-15

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