Zobrazeno 1 - 10
of 78
pro vyhledávání: '"Ulf Ottosson"'
Autor:
Yitmwa Hope Joel, Iniunam Aniefiok Iniunam, Danjuma Filibus Dami, Ulf Ottosson, Adams Adamanyiwa Chaskda
Publikováno v:
Ecology and Evolution, Vol 14, Iss 5, Pp n/a-n/a (2024)
Abstract Conservation decisions for bird diversity in the Afrotropics are often based on ecological studies utilizing diurnal bird species likely owing to difficulties associated with sampling nocturnal birds. It is therefore important to compare the
Externí odkaz:
https://doaj.org/article/5204ba12778c4f61bfc9a21b0d5b8c9a
Autor:
Talatu Tende, Iniunam A. Iniunam, Samuel T. Ivande, Adewale G. Awoyemi, Bello A. Danmallam, Abubakar S. Ringim, Longji A. Bako, Fatima J. Ramzy, Nanchin W. Kazeh, Arin Izang Izang, Panshak S. Kumdet, Joseph I. Ibrahim, M. Abubakar Haruna, Kevin Eyos, Ezekiel D. Iki, Adams A. Chaskda, Ulf Ottosson
Publikováno v:
Ecology and Evolution, Vol 14, Iss 4, Pp n/a-n/a (2024)
Abstract Citizen science projects are expanding globally, with the African continent, particularly Nigeria, registering significant growth. Here, we document and analyse novel operations of the Nigerian Bird Atlas Project (NIBAP), 2015–2022. This p
Externí odkaz:
https://doaj.org/article/d95ea7d6d86742b691c83ca493e7c0e8
Autor:
Mariëlle L. van Toor, Sergey Kharitonov, Saulius Švažas, Mindaugas Dagys, Erik Kleyheeg, Gerard Müskens, Ulf Ottosson, Ramunas Žydelis, Jonas Waldenström
Publikováno v:
Movement Ecology, Vol 9, Iss 1, Pp 1-12 (2021)
Abstract Background The timing of migration for herbivorous migratory birds is thought to coincide with spring phenology as emerging vegetation supplies them with the resources to fuel migration, and, in species with a capital breeding strategy also
Externí odkaz:
https://doaj.org/article/8625edee5b6449329c2edd3d9587a2b5
Publikováno v:
Frontiers in Ecology and Evolution, Vol 10 (2022)
The Bergmann’s rule predicts that in endotherms, body sizes will differ with respect to thermal gradients. Larger bodied individuals will inhabit colder environments while in warmer environments, individuals will be smaller-bodied. This hypothesis
Externí odkaz:
https://doaj.org/article/0be4137abd504b15884cecaf98173985
Publikováno v:
PLoS ONE, Vol 9, Iss 1, p e84288 (2014)
This survey was conducted in two protected areas in Nigeria to genetically identify individual lions and to determine the genetic variation within and between the populations. We used faecal sample DNA, a non-invasive alternative to the risky and lab
Externí odkaz:
https://doaj.org/article/14dd57833b5941058d1ce17fb4c67bc5
Autor:
Nicolas Gaidet, Giovanni Cattoli, Saliha Hammoumi, Scott H Newman, Ward Hagemeijer, John Y Takekawa, Julien Cappelle, Tim Dodman, Tony Joannis, Patricia Gil, Isabella Monne, Alice Fusaro, Ilaria Capua, Shiiwuua Manu, Pierfrancesco Micheloni, Ulf Ottosson, John H Mshelbwala, Juan Lubroth, Joseph Domenech, François Monicat
Publikováno v:
PLoS Pathogens, Vol 4, Iss 8, p e1000127 (2008)
The potential existence of a wild bird reservoir for highly pathogenic avian influenza (HPAI) has been recently questioned by the spread and the persisting circulation of H5N1 HPAI viruses, responsible for concurrent outbreaks in migratory and domest
Externí odkaz:
https://doaj.org/article/b4511e67eccd4328a9fd517d4a25aa04
Autor:
Michael Brooks, Sanjo Rose, Res Altwegg, Alan TK Lee, Henk Nel, Ulf Ottosson, Ernst Retief, Chevonne Reynolds, Peter G Ryan, Sidney Shema, Talatu Tende, Les G Underhill, Robert L Thomson
Publikováno v:
Ostrich. 93:223-232
Publikováno v:
Ostrich. 92:1-15
High human population growth and rapid urbanisation, particularly in Africa, have led to an increased interest in the impacts of this land-use change on bird communities. The African Bird Atlas Pro...
Autor:
Ulf Ottosson, Jonas Waldenström
Publikováno v:
Scopus-Elsevier
The accuracy of field sex determination of Common Whitethroats captured during spring migration in Nigeria was tested with a genetic sex determination technique. Among both age classes males were more often correctly sexed than females. In total, one
Publikováno v:
Ostrich: Journal of African Ornithology; Vol. 92 No. 3 (2021); 194-202
The population of various species of vultures are declining rapidly across Africa, with noticeable declines in most areas including protected areas. This sudden decline of vultures in African countries, especially Nigeria, is quite alarming. One of t