Results 61 to 70 of about 267 (149)

Adaptive drift and barrier-avoidance by a fly-forage migrant along a climate-driven flyway

open access: yesMovement Ecology, 2021
Background Route choice and travel performance of fly-forage migrants are partly driven by large-scale habitat availability, but it remains unclear to what extent wind support through large-scale wind regimes moulds their migratory behaviour. We aimed to
Wouter M.G. Vansteelant   +4 more
doaj   +1 more source

Noctuid migration in Texas within the nocturnal aeroecological boundary layer [PDF]

open access: yesIntegrative and Comparative Biology, 2007
(Uploaded by Plazi for the Bat Literature Project) ong-distance migration of adult corn earworm moths (Helicoverpa zea), and several other noctuid moth species, facilitates seasonal expansion of pest populations and consequent increased infestations of agricultural crops on a continental scale in North America.
openaire   +2 more sources

Evaluating trends in blackbird abundance using weather surveillance radar [PDF]

open access: yes, 2020
Blackbirds damage rice in the southern United States, sunflowers in the Northern Great Plains, and field and sweet corn across the continent. The efficacy of strategies to mitigate damages could be improved by knowing how and when blackbird numbers ...
Clark, Bonne
core  

Flight Behavior of Individual Aerial Insectivores Revealed by Novel Altitudinal Dataloggers

open access: yesFrontiers in Ecology and Evolution, 2018
Swallows and martins (Aves: Hirundinidae) are well-studied with respect to their breeding biology, but major aspects of their individual aerial movement behavior and ecology are poorly understood.
R. Andrew Dreelin   +7 more
doaj   +1 more source

The Great Lakes shape nocturnal bird migration in southern Ontario

open access: yesAvian Conservation and Ecology, 2022
Coastlines in marine areas are known to influence use of the airspace as a habitat by migrating birds, but less is known about how the complex configuration of the Great Lakes influences bird migration patterns.
François Gagnon   +2 more
doaj  

Groping in the Fog: Soaring Migrants Exhibit Wider Scatter in Flight Directions and Respond Differently to Wind Under Low Visibility Conditions

open access: yesFrontiers in Ecology and Evolution, 2021
Atmospheric conditions are known to affect flight propensity, behaviour during flight, and migration route in birds. Yet, the effects of fog have only rarely been studied although they could disrupt orientation and hamper flight.
Paolo Becciu   +6 more
doaj   +1 more source

Multigenerational migration of fall armyworm, a pest insect

open access: yesEcosphere, 2019
Multigenerational insect migration commonly expands poleward, but meteorological influences are not clearly understood. We coupled biological and physical processes for the agricultural and invasive pest Spodoptera frugiperda (fall armyworm), by modeling
J. Westbrook   +4 more
doaj   +1 more source

Comparing imaging, acoustics, and radar to monitor Leach’s storm-petrel colonies [PDF]

open access: yesPeerJ, 2019
Seabirds are integral components of marine ecosystems and, with many populations globally threatened, there is a critical need for effective and scalable seabird monitoring strategies.
Rachael A. Orben   +10 more
doaj   +2 more sources

Chasing and surfing seasonal waves: Avian migration through the US tracks land surface phenology in fall, but not spring

open access: yesJournal of Animal Ecology, Volume 93, Issue 7, Page 836-848, July 2024.
Coupling weather surveillance radar and remote sensing data reveals how songbird migrants in the Central Flyway experience major temperature changes during their migrations. While the green‐up of the land surface does not limit their spring progression northwards, later fall migrants may be pushed southwards by vegetation dormancy.
Carrie Ann Adams   +3 more
wiley   +1 more source

Development of a networked photonic‐enabled staring radar testbed for urban surveillance

open access: yesIET Radar, Sonar &Navigation, Volume 18, Issue 1, Page 41-55, January 2024.
Integration of a quantum photonics oscillator into the microwave reference source of an L‐band fully digital staring radar. Networked radar testbed to demonstrate the utility of ultra‐low phase noise highly stable oscillators for detection of low observable targets in complex urban environment.
Mohammed Jahangir   +11 more
wiley   +1 more source

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