Výsledky vyhledávání - "Simone L. Webber"

Visual scoring of eggshell patterns has poor repeatability

Autor: Golo Maurer, Pankaj K. Choudhary, Steven J. Portugal, Rebecca L. Boulton, Phillip Cassey, Kaat Brulez, Simone L. Webber

Publikováno v: Journal of Ornithology. 155:701-706

Eggshell pattern scoring, a method to quantify the degree of surface maculation, can potentially be a quick, inexpensive and reliable method to obtain information on eggshell appearance and spot patterns. The key pigment responsible for red-brownish

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::57ba456fa949e1395296482f4192161c
https://doi.org/10.1007/s10336-014-1053-9

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Eggshell spot scoring methods cannot be used as a reliable proxy to determine pigment quantity

Autor: Simone L. Webber, Andrew G. Gosler, Phillip Cassey, Alan Meeson, Kaat Brulez, Ivan Mikšík, S. James Reynolds

Publikováno v: Journal of Avian Biology. 45:94-102

Eggshell maculation of most passerines is due to the deposition of the pigment protoporphyrin which is produced during biosynthesis of blood haem. Its functional significance has only received empirical attention in recent years. This interest has ge

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d1a83577a6b1d977e1e12b0f15af9ea5
https://doi.org/10.1111/j.1600-048x.2013.00236.x

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Energy expenditure during egg laying is equal for early and late breeding free-living female great tits

Autor: Harro A. J. Meijer, Simone L. Webber, Luc te Marvelde, Marcel E. Visser

Publikováno v: Oecologia, 168(3), 631-638. SPRINGER
Oecologia
Oecologia, 168(3), 631-638. Springer Verlag GmbH

In many bird populations, variation in the timing of reproduction exists but it is not obvious how this variation is maintained as timing has substantial fitness consequences. Daily energy expenditure (DEE) during the egg laying period increases with

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e88bd2fed52ab948d878975fbcf6441f
https://hdl.handle.net/20.500.11755/38319670-ff22-4539-9d57-fec33eeeaa19

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A new method for catching cavity-nesting birds during egg laying and incubation

Autor: Simone L. Webber, Marcel E. Visser, Luc te Marvelde, Arnold B. van den Burg

Publikováno v: Journal of Field Ornithology. 82:320-324

The physiological condition of female birds during the egg-laying and incubation periods is of considerable interest and yet is relatively understudied in wild birds, primarily due to the difficulty of catching birds during this period without causin

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0559c77d3992ff7870571c1337e74bbf
https://doi.org/10.1111/j.1557-9263.2011.00335.x

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Mismatched reproduction is energetically costly for chick feeding female great tits

Autor: Luc te Marvelde, Simone L. Webber, Marcel E. Visser, Harro A. J. Meijer

Publikováno v: Functional Ecology. 25:1302-1308

Summary 1. Climate change has caused a phenological mismatch between the timing of reproduction and the local food peak in many bird species. Late breeding birds therefore experience reduced food availability during chick rearing and are thus predict

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d9a756dee055a9a46fccb8e81587ecda
https://doi.org/10.1111/j.1365-2435.2011.01889.x

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Environmental factors influence both abundance and genetic diversity in a widespread bird species

Autor: Katharine Bradley, Yang Liu, Michael Griesser, Mohanad Abdelgadir, Peter Halvarsson, Katharine M. Bowgen, Lucie E. Schmaltz, Simone L. Webber

Publikováno v: Ecology and Evolution
Ecology and Evolution, 3(14), 4683-4695. Wiley
ECOLOGY AND EVOLUTION

Genetic diversity is one of the key evolutionary variables that correlate with population size, being of critical importance for population viability and the persistence of species. Genetic diversity can also have important ecological consequences wi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d26b2066c54bafe660f9760454ad8205
http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-213821

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Understanding Animal Group-Size Distributions

Autor: David J. T. Sumpter, Qi Ma, Simone L. Webber, Michael Griesser, Katharine M. Bowgen

Publikováno v: PLoS ONE
PLOS ONE
PLoS ONE, Vol 6, Iss 8, p e23438 (2011)

One of the most striking aspects of animal groups is their remarkable variation in size, both within and between species. While a number of mechanistic models have been proposed to explain this variation, there are few comprehensive datasets against

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5638b05f8a9b1c4860a2e88546acac19
http://europepmc.org/articles/PMC3166056

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