Results 91 to 100 of about 34,079 (235)

Challenges in population monitoring: Bar‐tailed Godwits (Limosa lapponica) on the East Atlantic Flyway defy assumed population structure

open access: yesIbis, EarlyView.
Estimating and monitoring migratory bird populations involves significant challenges, even in the most well‐studied and easily‐counted species, and can be further complicated by long‐held but unverified assumptions and by shifting distributions in changing flyway conditions.
Jesse R. Conklin   +4 more
wiley   +1 more source

Free‐living Black‐tailed Godwits maintain constant intake rates across varying grassland habitat conditions by adjusting their foraging behaviour

open access: yesIbis, EarlyView.
Free‐living birds need to acquire enough food to fulfil their energetic needs, which may require more effort in habitats with less favourable conditions. Therefore, to maintain their necessary energy intake, birds need to adjust their foraging behaviour in response to varying habitat conditions.
Renée Veenstra   +5 more
wiley   +1 more source

Phylogeography and demographic history of Lacerta lepida in the Iberian Peninsula: multiple refugia, range expansions and secondary contact zones

open access: yesBMC Evolutionary Biology, 2011
Background The Iberian Peninsula is recognized as an important refugial area for species survival and diversification during the climatic cycles of the Quaternary.
Hewitt Godfrey M   +3 more
doaj   +1 more source

Morphology matches mtDNA lineages in the southern smooth snake (Coronella girondica) from Iberia

open access: yesZoology, 2012
The rise of molecular techniques in the study of evolutionary histories has resulted in a gradual abandonment of morphological characters as the only sources of phylogenetic inference. However, morphological characters may be valuable for phylogenetic reconstruction, especially for tracking adaptive changes across phylogeographic groups defined by ...
Santos, Xavier   +5 more
openaire   +3 more sources

Environmental correlates of spatio‐temporal patterns of colour variation in a bird of prey: The common buzzard (Buteo buteo)

open access: yesIbis, EarlyView.
High colour variability in animals has been associated with adaptability to environmental change. Establishing how such variability is distributed in time and space, and identifying environmental correlates, can help understand the processes driving it.
Kaspar Delhey   +4 more
wiley   +1 more source

Matrilineal Heritage in Southern Iberia Reveals Deep Genetic Links between Continents.

open access: yesCollegium antropologicum, 2017
Within the Mediterranean Basin, the Iberian Peninsula has been a focus of attraction for several cultures and civilizations from its prehistory and history, making it a target territory for studying human migration patterns and peopling processes using a wide and heterogeneous spectrum of genomic markers. While its Cantabrian fringe represents the most
Hernández, Candela L.   +1 more
openaire   +4 more sources

Exploring drivers and costs of partial trans‐Saharan migration in juvenile vultures

open access: yesIbis, EarlyView.
Partial migration occurs when only a subset of individuals within a population undertakes a migratory journey. The decision to migrate can be influenced by intrinsic traits (e.g. sex or physical condition) as well as by extrinsic factors (e.g. social environment or resource availability).
Eneko Arrondo   +18 more
wiley   +1 more source

Climate deterioration and subsistence economy in prehistoric Southern Iberia: an evaluation of potential links based on regional trajectories

open access: yesEnvironmental Research Letters
The potential impact of climatic deterioration on societal breakdowns in prehistory is often based on the mere coincidence of archaeological and palaeoclimatological proxies.
Julien Schirrmacher   +3 more
doaj   +1 more source

Late Atlantic Settlement in Southern Portugal - Results of an excavation of a Mesolithic shell midden by the River Sado

open access: yesCurrent Swedish Archaeology, 1996
The study of large settlement sites with graves from the Late Mesolithic has changed our conception of this period. In western Europe this kind of antiquity has long been known, and it is well represented in the coastal area of western Iberia.
Lars Larsson
doaj   +1 more source

Post-disturbance vegetation dynamics during the Late Pleistocene and the Holocene: An example from NW Iberia [PDF]

open access: yes, 2012
This is the post-print version of the final paper published in Global and Planetary Change. The published article is available from the link below. Changes resulting from the publishing process, such as peer review, editing, corrections, structural ...
Allen   +67 more
core   +2 more sources

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