Results 61 to 70 of about 8,422 (237)
PLoS ONE, 2019 Mutualistic interactions are powerful drivers of biodiversity on Earth that can be represented as complex interaction networks that vary in connection pattern and intensity.
Claudia I Rodríguez-Flores +3 more
doaj +1 more source
Acta Botânica Brasílica, 2018 Hummingbirds are the main pollinators of most bromeliad species, whose nectar traits usually respond to the selective pressures imposed by pollinators.
Carlos E. P. Nunes +4 more
doaj +1 more source
TAXON, EarlyView.Abstract We explore phylogenetic relationships within the Pachira sensu lato clade (Bombacoideae, Malvaceae), test the monophyly of the genera Eriotheca and Pachira, and investigate their biogeographic history. The Pachira s.l. clade comprises ca. 72 species that traditionally have been placed in Eriotheca and Pachira. We sampled ca. 79% of its species
Vania Nobuko Yoshikawa +7 more
wiley +1 more source
Avian Conservation and Ecology, 2018 Most hummingbird species are distributed in tropical lowlands and mountains with few species reaching the alpine environments of high mountain peaks. Field surveys were conducted in nine alpine sites across four of the highest volcanoes in central Mexico
Libertad Arredondo-Amezcua +7 more
doaj +1 more source
Experimental Studies of Tail Shapes for Hummingbird-Like Flapping Wing Micro Air Vehicles
IEEE Access, 2020 The stability of flying of a hummingbird-like flapping-wing micro air vehicle (MAV) has been challenging. In this paper, experimental studies are reported on the tail shapes of hummingbird-like flapping-wing MAVs, since tails play an important role in ...
Yanghai Nan +3 more
doaj +1 more source
Functional Ecology, EarlyView.Read the free Plain Language Summary for this article on the Journal blog. Abstract The dependence on biotic pollination may constrain plant phenological responses because flowering time ultimately defines reproductive success. We proposed a local‐scale study combining long‐term phenology and experimental data to evaluate how a key functional trait—the
Amanda Eburneo Martins +3 more
wiley +1 more source
Functional Ecology, EarlyView.Read the free Plain Language Summary for this article on the Journal blog. Abstract The rate at which flowers dispense pollen across successive pollinator visits is a key functional trait influencing male reproductive success. Pollen presentation theory (PPT) predicts that when pollinators are abundant and actively groom their bodies to collect pollen,
Mario Vallejo‐Marín, Anna Lundgren
wiley +1 more source
Journal of the Royal Anthropological Institute, EarlyView.Anthropologists, in common with social theorists more generally, have often understood social life as an emergent phenomenon grounded in practices of creativity and improvisation. Where stasis and continuity feature, these are often presented as illusory manifestations of underlying processes of ‘invention’, or as external impositions upon otherwise ...
Paolo Heywood, Thomas Yarrow
wiley +1 more source
Stable isotope data indicate origins of mislabelled historical bird specimens
Ibis, EarlyView.Natural history specimens provide valuable insights across diverse research fields, but those needing more accurate metadata have limited scientific value. We applied stable isotope analysis to investigate the origin of 19th century Atlantic Forest bird specimens attributed to the northeastern Brazilian state of Pernambuco, which are the only records ...
Rafael Dantas Lima +4 more
wiley +1 more source