Results 131 to 140 of about 39,040 (293)

Elevation, rather than land use, causes important dietary shifts in the Mediterranean golden eagle

Journal of Zoology, EarlyView.
In an ever‐changing landscape, golden eagles in the Iberian Peninsula demonstrate remarkable dietary adaptability. We monitored 50 distinct breeding events over 4 years using camera traps, collecting over 520 000 images. Elevation, rather than land use, emerged as the main driver of prey composition: lagomorphs and columbiforms dominated at lower ...
D. Gambra, E. Navarro, J. Martel, N. Fernández‐Pesquera, P. Ortega, A. San Miguel, R. Perea, M. Peláez   +7 more
wiley   +1 more source

Local Genetic Structure on Breeding Grounds of a Long-Distance Migrant Passerine: The Bluethroat (Luscinia svecica) in Spain [PDF]

, 2012
Fernando Alda, Javier García, Jesús T. García, Susana Suárez‐Seoane   +3 more
openalex   +1 more source

Citizen science reveals host‐switching in louse flies and keds (Diptera: Hippoboscidae) during a period of anthropogenic change

Medical and Veterinary Entomology, EarlyView.
A study of louse flies in the United Kingdom, Isle of Man, and Ireland found 212 different interactions between Hippoboscidae and their hosts, of which 70 were previously unrecorded. No louse flies were found on aquatic species of birds. Host‐switching to gulls (Laridae) has occurred during a period in which these species have started relying on ...
Denise C. Wawman, Adrian L. Smith, Ben C. Sheldon   +2 more
wiley   +1 more source

Spatio‐Temporal Variation in Diet Among Age and Sex Cohorts of a Model Generalist Bird Species, the Great Tit Parus major: New Insights Revealed by DNA Metabarcoding

Ecology and Evolution
Dietary variation among cohorts can have a major impact on how populations adapt to environmental variation. Although variation in diet between cohorts and across habitats has been studied in many taxa, this is not true for most birds, especially smaller
J. R. Coomes, J. P. Cuff, M. S. Reichert, G. L. Davidson, W. O. C. Symondson, J. L. Quinn   +5 more
doaj   +1 more source

Spring weights and fat deposition of palaearctic passerine migrants in Senegal [PDF]

, 1990
Karl‐Heinz Loske
openalex   +1 more source

Welfare and Felt Duration

Noûs, EarlyView.
ABSTRACT How should we understand the duration of a pleasant or unpleasant sensation, insofar as its duration modulates how good or bad the experience is overall? Given that we seem able to distinguish between subjective and objective duration and that how well or badly someone's life goes is naturally thought of as something to be assessed from her ...
Andreas L. Mogensen
wiley   +1 more source

Alpine songbirds at higher elevations are only raised with a slight delay and therefore under harsher environmental conditions

Ecology and Evolution
The breeding phenology of birds is often timed to coincide with a peak in food availability. However, the shortening of the vegetation period with increasing elevation may force bird species at high elevations to breed earlier in relation to optimal ...
Julia Paterno, Fränzi Korner‐Nievergelt, Stefanie Gubler, Pia Anderwald, Valentin Amrhein   +4 more
doaj   +1 more source

The Relationship between Grinnellian and Eltonian Niche Characteristics and Passerine Distribution across a Latitudinal Gradient

Diversity
The degree to which Grinnellian and Eltonian niche characteristics influence species distribution may depend on latitude. Tropical regions are environmentally stable and resource-rich, whereas temperate regions are comparatively less environmentally ...
Erin E. Stukenholtz, Richard D. Stevens
doaj   +1 more source

Resilience of floral scent emission after florivory

Plant Biology, EarlyView.
Florivory is thought to affect floral traits, impacting pollination. However, our data suggest a stability in post‐florivory scent emission, which may guarantee the maintenance of pollinator visitation regardless of florivory, indicating a resilience of natural systems with multiple and simultaneous interactions. Created in BioRender. Tunes, P.
P. Tunes, Y. Canaveze, S. R. Machado, S. Dötterl, E. Guimarães   +4 more
wiley   +1 more source

Important Aspects of the Design of Experiments and Data Treatment in the Analytical Quality by Design Framework for Chromatographic Method Development

Molecules
In the analytical quality by design (AQbD) framework, the design of experiments (DOE) plays a very important role, as it provides information about how experimental input variables influence critical method attributes.
Bianca F. G. Passerine, Márcia C. Breitkreitz   +1 more
doaj   +1 more source