Results 91 to 100 of about 195,308 (340)

Effects and observation of migrating birds on a boundary-layer windprofiler in Eastern Germany

open access: yesMeteorologische Zeitschrift, 1998
Boundary-layer windprofilers recently have become more and more a standard technique for measuring lower atmospheric wind profiles operationally. Although the availability of reasonable data is quite high, there are about 2 % of all profiles which show ...
D. Engelbart, U. Görsdorf, W. Ruhe
doaj   +1 more source

Radar studies of bird migration [PDF]

open access: yes
Observations of bird migration with NASA radars were made at Wallops Island, Va. Simultaneous observations were made at a number of radar sites in the North Atlantic Ocean in an effort to discover what happened to those birds that were observed leaving ...
Williams, J. M., Williams, T. C.
core   +1 more source

Avian Haemosporidian blood parasite infections at a migration hotspot in Eilat, Israel [PDF]

open access: yes, 2016
Haemosporidian blood parasites are frequent amongst passerines. Though they often do not cause detectable  consequences to host health, however, their presence or absence and also their prevalence across host  populations may potentially carry ...
Paperna, Ilan   +2 more
core   +3 more sources

Wetlands as environments of early human occupation: A new classification for freshwater palaeowetlands

open access: yesThe Depositional Record, EarlyView.
A new classification for inland freshwater palaeowetlands to be used in the field or core laboratory by sedimentologists, providing examples from the Guadix Basin (southern Spain). Abstract Present wetlands have proven to be delicate, biodiverse ecosystems, that are natural sinks for CO2 and act as good indicators for climate changes.
S. Pla‐Pueyo   +1 more
wiley   +1 more source

Reviving a Legacy Citizen Science Project to Illuminate Shifts in Bird Phenology

open access: yesInternational Journal of Zoology, 2012
Climate change has been of high interest to both the scientific community and the public at large since the phenomenon was first suggested. Subsequently, and with growing evidence of its impending ramifications, numerous studies have attempted to ...
Jessica Zelt   +4 more
doaj   +1 more source

Dynamic expression of lamin B1 during adult neurogenesis in the vertebrate brain

open access: yesDevelopmental Dynamics, EarlyView.
Abstract Background In mammals, specific brain regions such as the dentate gyrus (DG) of the hippocampus and the subventricular zone (SVZ) of the lateral ventricles harbor adult neural stem/progenitor cells (ANSPCs) that give rise to new neurons and contribute to structural and functional brain plasticity.
Diana Zhilina   +12 more
wiley   +1 more source

Quantifying nocturnal thrush migration using sensor data fusion between acoustics and vertical‐looking radar

open access: yesRemote Sensing in Ecology and Conservation
Studying nocturnal bird migration is challenging because direct visual observations are difficult during darkness. Radar has been the means of choice to study nocturnal bird migration for several decades, but provides limited taxonomic information. Here,
Silvia Giuntini   +6 more
doaj   +1 more source

Global analysis of threat status reveals higher extinction risk in tropical than in temperate bird sister species [PDF]

open access: yes, 2019
Given increasing pressures upon biodiversity, identification of species’ traits related to elevated extinction risk is useful for more efficient allocation of limited resources for nature conservation.
Reif, Jiří, Štěpánková, Klára
core   +2 more sources

Pre‐oviposition development of the brown anole (Anolis sagrei)

open access: yesDevelopmental Dynamics, EarlyView.
Abstract Background The brown anole, Anolis sagrei, has emerged as a representative squamate species for developmental studies during the past decades. Novel functional tools have been established to manipulate embryogenesis through genome editing or the introduction of small molecule inhibitors, and their effective use requires a thorough ...
Antonia Weberling   +9 more
wiley   +1 more source

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