Results 51 to 60 of about 55,247 (248)
Eine Perspektive zu interdisziplinären Ansätzen in der Chemotaxis(forschung)
Chemotaxis ist die Bewegung individueller Agenten hin zu oder weg von einem chemischen Stimulus. Dieses Phänomen wird in den verschiedensten Fachbereichen untersucht, von Biologie hin zu Physik und auch im Ingenieurwesen. Dieses Perspektivpapier zielt darauf ab, neue Entwicklungen im Feld darzustellen und die Vereinheitlichung von Terminologie zu ...
Juliane Simmchen +18 more
wiley +1 more source
ABSTRACT The freshwater catfish Tandanus tandanus, a species with riverine populations listed as endangered in the Murray–Darling Basin, faces significant conservation challenges. Knowledge about early life stage dispersal remains limited, yet recent larval netting over two spawning seasons in the Macquarie River and adjoining irrigation channels fed ...
Joachim B. Bretzel +4 more
wiley +1 more source
We analyse data from a rescue database collected at the Innsbruck Alpenzoo (Tyrol, Austria). The sample covers 33 years (1988–2020), and more than 5250 wild birds from 145 species originating from Innsbruck and the surrounding Inn Valley, one of the most
Christiane Böhm +2 more
doaj +1 more source
Craniogenetic studies in Sus scrofa: With emphasis on the ‘orbitosphenoid’ problem
Abstract The orbitosphenoid is a skeletal element of the endocranium of extant mammals. However, it has also been described in many of their fossil ancestors. Craniogenetic studies show that it is composed of two types of bone: first, the cartilaginous ala orbitalis and parts of the trabecular plate are transformed by endochondral ossification; second,
Wolfgang Maier, Ulla Lächele, Irina Ruf
wiley +1 more source
The role of pollinator attracting scent in the sexually deceptive orchids Ophrys chestermanii, O. normanii and O. tenthredinifera [PDF]
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
core
Abstract Wild bees (Hymenoptera: Anthophila) are important pollinators and essential for maintaining ecosystem health. The majority of bee species are ground‐nesting, and all bees spend most of their lifetime inside the nest. Still, most studies and monitoring schemes assess wild bees during flower visitation, allowing no conclusion about their nest ...
Christopher Hellerich +5 more
wiley +1 more source
Diversity and distribution of spiders (Arachnida: Araneae) in dry ecosystems of North Rhine-Westphalia (Germany) [PDF]
The present study provides a robust data set for ecological planning and conservation of dry ecosystems in western Germany in general and North Rhine-Westphalia in particular.
Buchholz, Sascha +1 more
core
In this study we examined the habitats, nesting sites, and survival rates of free‐living colonies through personal monitoring of nest sites in Munich (N = 107) and the coordination of Citizen Science monitoring across Germany (N = 423). On average, only 12% of the personally monitored colonies in Munich survived annually, a figure that aligns well with
Benjamin Rutschmann +2 more
wiley +1 more source
The 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

