Publications by authors named "Zuzana Zajkova"
Migratory marine species cross political borders and enter the high seas, where the lack of an effective global management framework for biodiversity leaves them vulnerable to threats. Here, we combine 10,108 tracks from 5775 individual birds at 87 sites with data on breeding population sizes to estimate the relative year-round importance of national jurisdictions and high seas areas for 39 species of albatrosses and large petrels. Populations from every country made extensive use of the high seas, indicating the stake each country has in the management of biodiversity in international waters.
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- * The SPI-Birds Network and Database was established to connect researchers and data on long-term studies of individually marked birds, currently housing data on nearly 1.5 million birds across 80 populations.
- * SPI-Birds promotes data sharing, prevents data loss, and enhances collaboration through community-developed standards and a decentralized approach that allows research groups to maintain control over their data.
Article Synopsis
- Many generalist species, like Cory's shearwaters, show variability in their niche sizes within a population, indicating individual specialization in feeding strategies.
- Research over 2-8 years found that while individuals adapted their diets and habitats between breeding and non-breeding grounds, their daily activities remained consistent, suggesting a strong influence of individual traits.
- Intermediate dietary specialization was linked to higher breeding success, pointing to a stabilizing selection effect, but once specialized, individuals may struggle to adapt to changing environments.
Long-distance migrants are suffering drastic declines in the last decades. Causes beneath this problem are complex due to the wide spatial and temporal scale involved. We aim to reveal migratory routes, stopover areas, wintering grounds, and migratory strategies for the most southwestern populations of the near-threatened European Roller Coracias garrulus in order to identify conservation key areas for the non-breeding stage of this species.
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