Zobrazeno 1 - 10
of 60
pro vyhledávání: '"Jon Loman"'
Autor:
Thomas Madsen, Jon Loman, Dirk Bauwens, Bo Stille, Håkan Anderberg, Lewis Anderberg, Beata Ujvari
Publikováno v:
Biological journal of the Linnean Society
Climate change has been shown to have significant negative effects on wildlife populations owing to both gradual shifts in mean climatic conditions and an increased frequency of extreme climatic events. Based on a long-term study spanning 40 years, w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5b486122274724e3fef68d4c1498ef06
https://hdl.handle.net/10067/1952060151162165141
https://hdl.handle.net/10067/1952060151162165141
Publikováno v:
Current Biology. 30:R1297-R1299
Climate change is regarded as a major threat to global biodiversity [1]. However, another key driver of declines in biodiversity during the last century has been, and still is, the devastating impact of anthropogenic habitat destruction [2]. Human de
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a089c4c2c19c8c2406b46bdbedaa54fe
https://doi.org/10.1016/j.cub.2020.08.059
https://doi.org/10.1016/j.cub.2020.08.059
Autor:
Jon Loman
Publikováno v:
Herpetological Bulletin. :9-14
Field data on breeding phenology of Rana arvalis and R. temporaria for the period 1990 - 2017 in Scania, Sweden are presented and analysed. There was no temporal trend for R. temporaria. For R. arvalis the results were mixed, one out of two approache
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::94bd4f8a9cf1092c0dbaaaca3902d74b
https://doi.org/10.33256//hb147.914
https://doi.org/10.33256//hb147.914
Autor:
Jon Loman
Publikováno v:
Journal of Zoology. 300:314-323
This study explores the cohort patterns in a size versus time plot of individual metamorphs of Rana tadpoles. This meta-study was based on a number of studies where any of three species of Rana tadpoles were raised in tanks under various treatments (
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::afa3f4b942d91c8ba4179938b7e3d352
https://doi.org/10.1111/jzo.12389
https://doi.org/10.1111/jzo.12389
Autor:
Jon Loman
Publikováno v:
Web Ecology, Vol 7, Iss 1, Pp 47-52 (2007)
Predation on large woody plant seeds; chestnuts, acorns and sloe kernels, was studied in deciduous forests of two size classes: small woodlots (
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::96c3f4282a01384ca4755cd4e5784fd2
https://www.web-ecol.net/7/47/2007/
https://www.web-ecol.net/7/47/2007/
Autor:
Thomas Madsen, Jon Loman
Publikováno v:
Amphibia-Reptilia. 31:509-524
Anuran sex ratio at breeding sites is typically male biased. Such sex ratios may be due to poor female survival, to females not breeding as frequently as males and/or to males becoming sexually mature earlier than females. In the present study, the f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5443e424019412513f65a44197984db8
https://doi.org/10.1163/017353710x524705
https://doi.org/10.1163/017353710x524705
Autor:
Jon Loman, Björn Lardner
Publikováno v:
Acta Oecologica. 35:824-830
In species with complex life cycles, density regulation can operate on any of the stages. in frogs there are almost no studies of density effects on the performance of adult frogs in the terrestrial habitat. We therefore studied the effect of summer
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c836b790db04de6444f852c992ed16a3
https://doi.org/10.1016/j.actao.2009.08.011
https://doi.org/10.1016/j.actao.2009.08.011
Autor:
Jon Loman
Publikováno v:
Journal of Zoology. 279:64-70
This study examines the consequences of variation in the laying and hatching date for the time of metamorphosis in the common frog Rana temporaria. Field data are presented showing that eggs laid early tend to take longer to develop. Thus, the time a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9d0bc2c4696d83931e319f9ef5b2d97f
https://doi.org/10.1111/j.1469-7998.2009.00589.x
https://doi.org/10.1111/j.1469-7998.2009.00589.x
Autor:
Jon Loman, Björn Lardner
Publikováno v:
Applied Herpetology. 6:227-236
Frogs are often rare or absent from intensively farmed areas. Here we explore the possibility that the landscape and the quality of the terrestrial habitat are unsuitable for these populations. Spawn of Rana arvalis and R. temporaria was introduced i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9824d1f1e50ab5340e0a609a9358ac12
https://doi.org/10.1163/157075408x386196
https://doi.org/10.1163/157075408x386196
Autor:
Jon Loman
Publikováno v:
Ibis. 121:204-207
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5236c4f2f5799330e74af9e78f59d773
https://doi.org/10.1111/j.1474-919x.1979.tb04963.x
https://doi.org/10.1111/j.1474-919x.1979.tb04963.x