Results 11 to 20 of about 8,636 (240)
npj Precision Oncology, 2022 Immunotherapies have recently gained traction as highly effective therapies in a subset of late-stage cancers. Unfortunately, only a minority of patients experience the remarkable benefits of immunotherapies, whilst others fail to respond or even come to
Timothy Rajakumar +32 more
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Hummingbird-plant interactions in Chile: An ecological review of the available evidence
Avian Research, 2022 Hummingbird species have closely evolved with the plants they feed on, which is confirmed by their often tight ecological relationships in natural settings. Hummingbird-plant interactions are of interest for research areas such as ecology, evolution, and
Rodrigo Medel +2 more
doaj +1 more source
Mask R-CNN Refitting Strategy for Plant Counting and Sizing in UAV Imagery
Remote Sensing, 2020 This work introduces a method that combines remote sensing and deep learning into a framework that is tailored for accurate, reliable and efficient counting and sizing of plants in aerial images.
Mélissande Machefer +4 more
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Ecological change may be a common initiator of evolutionary pollinator shifts. [PDF]
New PhytolSummary Although evolutionary pollinator shifts are accepted as major sources of floral and species diversity in angiosperms, the mechanisms triggering pollinator shifts remain largely unexplored. In 1970, Stebbins proposed that ecological change may be a common initiator of evolutionary pollinator shifts, but empirical tests of Stebbins' hypothesis ...
Dellinger AS.
europepmc +2 more sources
DNA metabarcoding allows non-invasive identification of arthropod prey provisioned to nestling Rufous hummingbirds (Selasphorus rufus) [PDF]
PeerJ, 2019 Hummingbirds consume sugars from nectar, sap and honeydew, and obtain protein, fat and minerals from arthropods. To date, the identity of arthropod taxa in hummingbird diets has been investigated by observation of foraging or examination of alimentary ...
Alison J. Moran +2 more
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Influence of plant reproductive systems on the evolution of hummingbird pollination
Ecology and Evolution, 2022 Many hummingbird‐pollinated plant species evolved from bee‐pollinated ancestors independently in many different habitats in North and South America. The mechanisms leading to these transitions are not completely understood.
Stefan Abrahamczyk +6 more
doaj +1 more source
Robotic Hummingbird Axial Dynamics and Control near Hovering: A Simulation Model
Actuators, 2023 After a short overview of the COLIBRI project, this paper considers the cycle-averaged flight dynamics of a flapping-wing robot near hovering, taking advantage of the weak coupling between the roll and pitch axes.
Yousef Farid +5 more
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Hummingbird–Plant Interactions Are More Specialized in Forest Compared to Coffee Plantations
Diversity, 2020 Deforestation transforms habitats, displacing vertebrates and the other dimensions of biodiversity they support through their interactions. Few empirical studies have quantified the effect deforestation has on vertebrate–pollinator interaction networks ...
Beth M. L. Morrison, Chase D. Mendenhall
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Linking Socioeconomics to Biodiversity in the City: The Case of a Migrant Keystone Bird Species
Frontiers in Ecology and Evolution, 2022 Billions of wild animals migrate every year between breeding and non-breeding sites, facing new environmental conditions due to anthropogenic change. Although cities engender profound environmental changes, they provide habitat for some migratory birds ...
Nélida R. Villaseñor +2 more
doaj +1 more source
Ecology and Evolution, 2023 Many fire‐prone forests are experiencing wildfires that burn outside the historical range of variation in extent and severity. These fires impact pollinators and the ecosystem services they provide, but how the effects of fire are mediated by burn ...
Gina L. Tarbill +2 more
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