Results 61 to 70 of about 16,645 (235)
Journal of Pollination Ecology, 2011 Floral syndromes are traditionally thought to be associated with particular pollinator groups. Ornithophilous flowers tend to have traits that facilitate bird pollination such as having long, narrow, tubular corollas, often vivid coloration and diluted ...
Katharina Stein, Isabell Hensen
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Journal of Animal Ecology, EarlyView.Migrating songbirds regularly use shallow torpor (up to 98% of birds for some species) to save energy (up to 42%) during inactive periods. This Ruby‐crowned Kinglet Corthylio calendula that was captured after a spring snowstorm highlights the value of being able to save energy when encountering unfavourable conditions.
Ryan A. C. Leys +2 more
wiley +1 more source
Vocal dimorphism in Anna's hummingbirds
Journal of Avian BiologySexual dimorphism in vocal signals is found across many bird species. By evaluating correlations among sex, behaviors, and vocalizations, the meaning and utility of sound production may be inferred.
Sierra Ru‐Yi Glassman +2 more
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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
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Journal of the Royal Anthropological Institute, EarlyView.Abstract Comment on ‘On the problem of continuity: a theory of culture beyond invention’ by Paolo Heywood and Thomas ...
Andrew Shryock
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Acta Botânica Brasílica, 2012 Cuphea melvilla é uma espécie peculiar dentro de um gênero majoritariamente melitófilo. Dois agrupamentos de indivíduos, em bordas das matas de galeria do Córrego do Panga, Uberlândia, MG, foram estudados com o objetivo de investigar o sistema de ...
Ana Flávia de Oliveira Melazzo +1 more
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, 2018 An undergraduate’s memoir about his experience as a summer researcher at the Rocky Mountain Biological Laboratory in Colorado. The student explains his research in his own words and gives his thoughts on how he, the research center, and the other ...
Paton, Grant
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Improving spine‐based age estimation in centrarchid fishes using otolith‐derived training sets
Journal of Fish Biology, EarlyView.Abstract Nonlethal age determination is a priority in fish biology contexts where sacrifice is restricted, but estimates derived from nonlethally attainable structures tend to suffer from poor precision and accuracy relative to necessarily lethal, otolith‐derived estimates.
Matthew P. Woo +4 more
wiley +1 more source
Botanical Sciences, 2010 We assessed nectar production patterns, the breeding system, and overall pollinator dependence of Psittacanthus schiedeanus (Schlecht. & Cham.) G.Don (Loranthaceae), a mistletoe species that blooms in the late summer of the eastern cloud forests of ...
María Magdalena Ramírez +1 more
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A Simple Iterative Model Accurately Captures Complex Trapline Formation by Bumblebees Across Spatial Scales and Flower Arrangements [PDF]
, 2013 PMCID: PMC3591286This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are ...
A Manning +41 more
core +4 more sources