Results 51 to 60 of about 49,115 (211)
Wildlife Biology, Volume 2025, Issue 3, May 2025.Psittaciformes are among the most threatened birds, and population size and trend estimates are needed to aid conservation. The burrowing parrot Cyanoliseus patagonus is undergoing substantial changes in its population size, due to habitat degradation, trapping for the pet trade, and persecution as crop pest.
Juan F. Masello +8 more
wiley +1 more source
Beitrag des ökologischen Landbaus zum Meeresumweltschutz [PDF]
, 2002 siehe ...
Paulsen, H-M, Schnug, E, Volkgenannt, U
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Addressing Challenges in Simulating Inter–Annual Variability of Gross Primary Production
Journal of Advances in Modeling Earth Systems, Volume 17, Issue 5, May 2025.Abstract A long‐standing challenge in studying the global carbon cycle has been understanding the factors controlling inter–annual variation (IAV) of carbon fluxes, and improving their representations in existing biogeochemical models. Here, we compared an optimality‐based model and a semi‐empirical light use efficiency model to understand how current ...
Ranit De +34 more
wiley +1 more source
EnergiesThe European Commission has recently announced two guiding principles for EU product policy: First, product policy shall ensure that the performance of front-runner products in terms of sustainability becomes the norm, and second, the effectiveness of ...
Jens Schuberth +6 more
doaj +1 more source
Biology Open, 2017 Two different measurement techniques were applied to study the attachment of the smooth foot pads of the Madagascar hissing cockroach Gromphadorhina portentosa.
Oliver Betz +9 more
doaj +1 more source
Vision of breeding for organic agriculture [PDF]
, 2003 This report describes the results of research into the vision of breeding systems within organic agriculture in the Netherlands. The purpose of the research was to arrive at a vision for breeding in organic agriculture by means of interviews and ...
Baars, Ton +4 more
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The role of pollinator attracting scent in the sexually deceptive orchids Ophrys chestermanii, O. normanii and O. tenthredinifera [PDF]
, 2008 Sexual deception of male bees is one of the most remarkable mechanisms of pollination (Ackermann 1986, Proctor & al. 1996). Flowers of the orchid genus Ophrys mimic females of their pollinator species, usually bees and wasps, to attract males, which try ...
Ayasse, Manfred +9 more
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Emergence of a Resource Acquisition Trade‐off at the Community Scale during Environmental Change
Ecology Letters, Volume 28, Issue 4, April 2025.A four‐decadal cycle of eutrophication and subsequent re‐oligotrophication in Lake Constance led to the emergence of a strong trade‐off between phosphate and light affinity. We derive an explanation for the emergence of this trade‐off from resource ratio theory and discuss the relevance of this novel concept for trait‐based ecology.
Anton Pranger +4 more
wiley +1 more source
Perspektivenwechsel der Politischen Ökologie – Back to the roots! [PDF]
, 2022 Helmut Geist
openalex +1 more source