Results 61 to 70 of about 65,424 (308)
Ecosphere, 2021 Estuarine ecosystems are threatened by climate change and biological invasions. Among global changes, sea‐level rise is broadly impacting tidal wetlands, through increases in salinity and alteration of inundation regimes.
Morgane B. Gillard +4 more
doaj +1 more source
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
core
Analysis and Assembling of Network Structure in Mutualistic Systems [PDF]
, 2007 It has been observed that mutualistic bipartite networks have a nested structure of interactions. In addition, the degree distributions associated with the two guilds involved in such networks (e.g.
Burgos, Enrique +6 more
core +3 more sources
Smart Bioinspired Material‐Based Actuators: Current Challenges and Prospects
Advanced Intelligent Systems, Volume 7, Issue 3, March 2025.This work gathers, in a review style, an extensive and comprehensive literature overview on the development of autonomous actuators based on synthetic materials, bringing together valuable knowledge from several studies. Furthermore, the article identifies the fundamental principles of actuation mechanisms and defines key parameters to address the size
Alejandro Palacios +4 more
wiley +1 more source
New data on the fauna of bees of the genus Andrena Fabricius, 1775 (Hymenoptera: Andrenidae) in Nakhichevan Autonomous Republic [PDF]
Кавказский энтомологический бюллетень, 2009 In the paper data on ecology of 27 species bees of the genus Andrena of fauna Nakhichevan AR are cited. Species A. aberrans Eversmann, 1852, A. asperula Osytshnjuk, 1977, A. dentiventris Morawitz, 1874, A. lateralis Morawitz, 1876, A.
M.M. Maharramov
doaj +1 more source
Biodiversitätsmonitoring im Südtiroler Kräuteranbau
Julius-Kühn-Archiv, 2023 Der Anbau von Arznei- und Gewürzpflanzen zeichnet sich in der Regel durch vielfältige Anbaukulturen auf relativ kleinen Flächen aus. Dies gilt insbesondere für Südtirol, wo diese Kulturen hauptsächlich von kleinen Betrieben im Berggebiet angebaut werden.
Obwegs, Lisa +8 more
doaj +1 more source
American Journal of Agricultural Economics, EarlyView.Abstract Germany's Renewable Energy Sources Act (REA), enacted in 2000 and subsequently amended, subsidized national renewable energy production with fixed feed‐in tariffs for renewable energy sources (RE) from wind, solar, and biogas. Empirical studies suggest that the policy was creating windfall effects for landowners and attribute farmland use ...
Lars Isenhardt +6 more
wiley +1 more source
InsectsWorker honey bees are crucial for colony stability and ecosystem pollination. However, the cross-scale aging features and underlying mechanisms in the Eastern honey bee (Apis cerana) remain poorly understood.
Qiang Ma +8 more
doaj +1 more source
American Journal of Agricultural Economics, EarlyView.Abstract While multiple factors explain low adoption rates of improved varieties by small‐scale farmers in sub‐Saharan Africa, a key supply‐side constraint is the limited availability of seed embodying new traits in the volume, quality, price, and timeliness required by farmers. This constraint is partly attributable to classical failures in the market
Dawit Mekonnen +5 more
wiley +1 more source
Using stable isotopes in hummingbird breath to estimate reliance on supplemental feeders
Ecology and Evolution, 2023 Understanding the ecological consequences of supplemental feeding to both hummingbirds and the plants they pollinate is complicated by logistical challenges associated with assessing relative dietary resource use with commonly applied observational ...
Nathan Wolf +3 more
doaj +1 more source