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Seasonal timing
Species can adapt over the course of time. As the lives of species are altered by climate change, a different seasonal timing could make them adapt to an early spring, for example. How does this work, and what are the limits to such adaptations? -
How do nutrients and temperature affect cyanobacterial bloom toxicity?
Toxic cyanobacterial blooms threaten freshwater quality, made worse by climate change and eutrophication. The toxicity of these blooms depends not only on cyanobacteria quantity but also on the presence potentially toxin-producing species and genotypes, and their varied toxin production. -
How do nutrients and temperature affect cyanobacterial bloom toxicity?
Toxic cyanobacterial blooms threaten freshwater quality, made worse by climate change and eutrophication. The toxicity of these blooms depends not only on cyanobacteria quantity but also on the presence potentially toxin-producing species and genotypes, and their varied toxin production. -
Costs of scaring grass-eating barnacle geese often outweigh the benefits
At the current population sizes, the practice of scaring geese off pastures in the province of Friesland probably ends up costing more than it saves. Ecologist Monique de Jager and colleagues from the Netherlands Institute of Ecology (NIOO-KNAW), Utrecht University, Wageningen University & Research and the University of Amsterdam conclude this based on a model study, that was conducted as part of the Dutch contribution to European goose management. The results suggest that scaring geese is cost-effective only when there are few geese in the area. -
Verjagen van grasetende brandganzen kost vaak meer dan het oplevert
Het verjagen van brandganzen van weilanden in Friesland, wat nu de praktijk is, kost bij de huidige aantallen ganzen waarschijnlijk meer dan dat het oplevert. Dat blijkt uit een modelstudie van ecoloog Monique de Jager en collega’s van het Nederlands Instituut voor Ecologie (NIOO-KNAW), Universiteit Utrecht, Wageningen University and Research en de Universiteit van Amsterdam. De studie werd uitgevoerd in het kader van de Nederlandse bijdrage aan het Europese ganzenbeheer. Het wegjagen van ganzen lijkt alleen kosteneffectief als er minder ganzen in het gebied zijn. -
Climate change impacts on harmful algal blooms
Harmful cyanobacterial blooms produce toxins that are a major threat to water quality and human health. Blooms increase with eutrophication and are expected to be amplified by climate change. Yet, we lack a mechanistic understanding on the toxicity of blooms, and their response to the complex interplay of multiple global change factors. Bloom toxicity is determined by a combination of mechanisms acting at different ecological scales, ranging from cyanobacterial biomass accumulation in the ecosystem, to the dominance of toxic species in the community, contribution of toxic genotypes in the population, and the amounts of toxins in cells. -
Bewick’s swans choose wintering areas based on the weather
Bewick’s swans fly less far during their autumn migration when the weather is warm. Climate change has therefore led to a shift in their common wintering areas. Now, for the first time, bird researchers have been able to use long-term GPS data to pinpoint the specific choices that individual swans make. -
Kleine zwaan kiest overwintergebied zelf op basis van het weer
Kleine zwanen vliegen bij warm weer minder ver tijdens hun herfsttrek. Klimaatverandering heeft dan ook geleid tot een verschuiving van het wintergebied. Voor het eerst konden Nederlandse vogelonderzoekers de specifieke keuzes aanwijzen die individuele zwanen maken. -
Symposium Migratory birds under pressure
On Thursday 7 September 2023 our Animal Ecology department is organising a symposium on migratory birds under pressure, followed by the PhD thesis defence of Kees Schreven the next day. -
Symposium Migratory birds under pressure
On Thursday 7 September 2023 our Animal Ecology department is organising a symposium on migratory birds under pressure, followed by the PhD thesis defence of Kees Schreven the next day.