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Article
P. Tryjanowski, Auteur ; T. H. Sparks, Auteur ; J. Ptaszyk, Auteur ; J. Kosicki, AuteurCapsule: Arrival date strongly influenced date of breeding and breeding success. Aim: To check our hypothesis that in years with low April temperatures, i.e. when storks started to breed, the relationship between timing of breeding and success w[...]
Article
T. H. Sparks, Auteur ; S. Atkinson, Auteur ; K. Lewthwaite, Auteur ; R. Dhap, Auteur ; N. J. Moran, Auteur ; P. Tryjanowski, AuteurUsing data from two independent UK citizen science schemes we investigate evidence for declines in abundance of Common Cuckoo Cuculus canorus, a species that is particularly easy to record. One of the schemes (Nature's Calendar) involves phenolo[...]
Article
J. Ptaszyk, Auteur ; J. Kosicki, Auteur ; T. H. Sparks, Auteur ; P. Tryjanowski, AuteurChanges in the spring arrival dates of migrant birds, particularly passerines, have been -reported from a range of locations. In this paper we take the opportunity provided by a -detailed monitoring scheme to examine several features of the timi[...]
Article
R. F. Pywell, Auteur ; E. A. Warman, Auteur ; L. Hulmes, Auteur ; S. Hulmes, Auteur ; P. Nuttall, Auteur ; T. H. Sparks, Auteur ; C. N. R. Critchley, Auteur ; A. Sherwood, AuteurIntensive farming has contributed to the serious declines in abundance and geographic range suffered by several bumblebee species in Europe and North America. Recent UK agri-environmental policy aims to conserve and restore bumblebee populations[...]
Article
C. Mitrus, Auteur ; T. H. Sparks, Auteur ; P. Tryjanowski, AuteurWe analysed data on the Red-breasted Flycatcher Ficedula parva collected in old-growth, oak-hornbeam stands in the primeval Bialowieza Forest, Poland during 1973-2002. In this period, the Red-breasted Flycatcher's return to its breeding sites be[...]
Article
T. H. Sparks, Auteur ; K. Huber, Auteur ; R. L. Bland, Auteur ; H. Q. P. Crick, Auteur ; P. J. Croxton, Auteur ; J. Flood, Auteur ; R. G. Loxton, Auteur ; C. F. Mason, Auteur ; J. A. Newnham, Auteur ; P. Tryjanowski, AuteurWe examine the first arrival and last departure dates of migrant bird species from, respectively, six and three English area bird reports. Of all 145 bird series, 50% demonstrated significantly earlier arrival in recent years, with the average a[...]
Article
P. Tryjanowski, Auteur ; T. H. Sparks, Auteur ; L. Kuczynski, Auteur ; S. Kuzniak, AuteurFrom some life-history traits, avian egg size can be postulated as potentially affected by climate change. In this paper, we present and discuss the potential effect of mean temperature in the breeding season on egg size of the red-backed shrike[...]
Article
P. Tryjanowski, Auteur ; S. Kuzniak, Auteur ; T. H. Sparks, AuteurWe analysed which among four factors (mean first arrival date, migration distance, changes in population size, detectability of species) influenced the magnitude of change (regression coefficient) in the first arrival dates of 30 migrant bird sp[...]
Article
R. L. H. Dennis, Auteur ; T. H. Sparks, AuteurA key to conserving organisms is identification of the habitat bounds and essential resources within them. in population studies (metapopulations) of phytophagous arthropods it is tacitly assumed that habitat bounds portray short-term stability [...]
