Zobrazeno 1 - 10
of 40
pro vyhledávání: '"Heinz Hafner"'
Publikováno v:
Ibis. 135:25-32
Food provisioning to chicks of Little Egret Egretta garzetta in a colony at Ligagneau in the Camargue, southern France, was measured using electronic nest balances. Both pair members supplied food to the chicks, and each performed three to five alter
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f888c7d8f67208b0151ed104a468f23f
https://doi.org/10.1111/j.1474-919x.1993.tb02806.x
https://doi.org/10.1111/j.1474-919x.1993.tb02806.x
Publikováno v:
Waterbirds. 29:154-162
In the Camargue of southern France, declining nest success of the Little Egret (Egretta garzetta) in mixed colonies over the past three decades has been suggested to be, at least partially, explained by exclusion from high-quality nest sites by the C
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1cdc526d8787df3cd7c56c9313890ac6
https://doi.org/10.1675/1524-4695(2006)29[154:dceele]2.0.co
https://doi.org/10.1675/1524-4695(2006)29[154:dceele]2.0.co
Publikováno v:
Journal of Field Ornithology. 77:212-219
Counts of nest starts are often used as indicators of the size of avian nesting populations, or of avian productivity. However, the accuracy of single or repeated counts of unmarked nests over time for estimating seasonal numbers of nests may be stro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b37136bad6342053d337f4ce3cd33bf4
https://doi.org/10.1111/j.1557-9263.2006.00043.x
https://doi.org/10.1111/j.1557-9263.2006.00043.x
Publikováno v:
Journal of Field Ornithology. 75:172-175
The double observer approach with marked nests was used in southern France for estimating the detection probability of nests of the Squacco Heron (Ardeola ralloides), a cryptic species in its breeding behavior. Results indicate that the detection pro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9029cf9fb3c101bfee25719286c62640
https://doi.org/10.1648/0273-8570-75.2.172
https://doi.org/10.1648/0273-8570-75.2.172
Publikováno v:
Bird Study. 50:300-305
Capsule Breeding parameters and body condition of chicks varied with colony sites. Aims To investigate variations of breeding parameters and chick body condition. Methods In 2000, marked nests (n = 86) were surveyed weekly at four colonies and each n
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ad415cf18ff4e2c93a144b428aaa63ff
https://doi.org/10.1080/00063650309461323
https://doi.org/10.1080/00063650309461323
Publikováno v:
Oikos. 101:113-126
Coloniality has mainly been studied from an evolutionary perspective, but relatively few studies have developed methods for modelling colony dynamics. Changes in number of colonies over time provide a useful tool for predicting and evaluating the res
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5b1779169b98d1f7e6a133f320f0b714
https://doi.org/10.1034/j.1600-0706.2003.12055.x
https://doi.org/10.1034/j.1600-0706.2003.12055.x
Publikováno v:
Ibis. 144:192-199
Colonial waterbirds are unusual in that competition for nest-sites or mates may occur at a scale of a few metres, whereas thousands of birds may overlap in their foraging range at a larger scale. Dispersal has been evaluated for only a few such speci
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2ca223ddc977ba91e8fb94c57ff71112
https://doi.org/10.1046/j.1474-919x.2002.00060.x
https://doi.org/10.1046/j.1474-919x.2002.00060.x
Publikováno v:
Ibis. 143:11-16
Changes in numbers of nesting pairs, clutch size, and brood size of Squacco Herons Ardeola ralloides in the Camargue, southern France were analysed over a 32-year period. The annual numbers of breeding pairs [average 84 pairs pL 30 sd, n = 32 years)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::aa3a93e24020dcea8ce8990e7c15736a
https://doi.org/10.1111/j.1474-919x.2001.tb04164.x
https://doi.org/10.1111/j.1474-919x.2001.tb04164.x
Autor:
Frédéric Thomas, Heinz Hafner
Publikováno v:
Acta Oecologica. 21:91-95
Predicting the response of natural populations to habitat loss and the ecological consequences to communities is one of the great challenges of ecology. Here, we report long-term (30 years) results from an ecological survey illustrating a change of b
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bc8a6f9f93fd07fe24162e074c1433f8
https://doi.org/10.1016/s1146-609x(00)00119-3
https://doi.org/10.1016/s1146-609x(00)00119-3
Publikováno v:
Scopus-Elsevier
Fasola, M., Hafner, H., Prosper, J., van der Kooij, H. & V. Schogolev, I. 2000. Population changes in European herons in relation to African climate. Ostrich 71 (1 & 2): 52–55. We describe populati...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::aa9c45527c2a2e008ba774c5bd120bea
https://doi.org/10.1080/00306525.2000.9639867
https://doi.org/10.1080/00306525.2000.9639867