Results 31 to 40 of about 175 (133)

Anthropogenic Illumination as Guiding Light for Nocturnal Bird Migrants Identified by Remote Sensing

Remote Sensing, 2022
Migrant birds rely on environmental and celestial cues for navigation and orientation during their journeys. Adverse weather, such as heavy rain or fog, but also thick layers of low-level clouds, affect visibility and can challenge birds’ ability to ...
Nadja Weisshaupt, Matti Leskinen, Dmitri N. Moisseev, Jarmo Koistinen   +3 more
doaj   +1 more source

Artificial Light at Night is Related to Broad-Scale Stopover Distributions of Nocturnally Migrating Landbirds along the Yucatan Peninsula, Mexico

Remote Sensing, 2020
The distributions of birds during migratory stopovers are influenced by a hierarchy of factors. For example, in temperate regions, migrants are concentrated near areas of bright artificial light at night (ALAN) and also the coastlines of large water ...
Sergio A. Cabrera-Cruz, Emily B. Cohen, Jaclyn A. Smolinsky, Jeffrey J. Buler   +3 more
doaj   +1 more source

Comparison of bird migration in a radar wind profiler and a dedicated bird radar

Remote Sensing in Ecology and Conservation, Volume 9, Issue 6, Page 820-828, December 2023., 2023
Radar wind profilers used in meteorology have long been known to register birds, but their use in ornithology has remained limited, largely because of biologists’ unfamiliarity with these systems. Here, we compare nocturnal bird migration patterns observed by a radar wind profiler during October 2019 and April 2021 with those from a dedicated bird ...
Nadja Weisshaupt, Maxime Hervo, Birgen Haest   +2 more
wiley   +1 more source

Monitoring and Characterizing Temporal Patterns of a Large Colony of Tadarida brasiliensis (Chiroptera: Molossidae) in Argentina Using Field Observations and the Weather Radar RMA1

Remote Sensing, 2020
Migratory colonies of up to thousands or millions of Brazilian free-tailed bats (Tadarida brasiliensis) are present in temperate areas of America. The monitoring of these massive colonies is crucial to know their conservation status and to evaluate the ...
Lourdes Boero, Denis Poffo, Verónica Damino, Sabrina Villalba, Rubén M. Barquez, Andrés Rodríguez, Matías Suárez, Hernán Mario Beccacece   +7 more
doaj   +1 more source

Taking radar aeroecology into the 21st century [PDF]

Ecography, 2019
This is the final version. Available from the publisher via the DOI in this record. ; Edward W. Rose Postdoctoral fellowship ; European Cooperation in Science and Technology ; Gemini windpark ; Rijkswaterstaat and Nederlandse Organisatie voor Wetenschappelijk Onderzoek ; Stichting voor de Technische ...
Shamoun-Baranes, J., Nilsson, C., Bauer, S., Chapman, J.   +3 more
openaire   +2 more sources

Geographic barriers and season shape the nightly timing of avian migration

Global Ecology and Biogeography, Volume 32, Issue 11, Page 1928-1936, November 2023., 2023
Abstract Aim Millions of birds take to the air for nocturnal migrations. Although it is widely recognized that migrants generally depart after sunset, nightly migration timing and their dependence on geographic features are hardly known at a continental scale, yet highly important for the mitigation of human‐wildlife conflicts. Using weather radars, we
Bart Kranstauber, Silke Bauer, Judy Shamoun‐Baranes   +2 more
wiley   +1 more source

Insect Monitoring Radar: Maximizing Performance and Utility

Remote Sensing, 2020
Autonomously-operating radars employing the ‘ZLC configuration’ have been providing long-term datasets of insect flight activity to heights of about 1 km since the late 1990s. A unit of this type operating in Australia has recently received a
V. Alistair Drake, Shane Hatty, Colin Symons, Haikou Wang   +3 more
doaj   +1 more source

Exploring the skies: Technological challenges in radar aeroecology [PDF]

2015 IEEE Radar Conference (RadarCon), 2015
Aeroecology is an emerging interdisciplinary science focused on the study of airborne organisms with the aim of deepening understanding about the ecological functions of the aerosphere and the bio-organisms that move through it. In addition to having important applications to the understanding of animal migration and foraging movements, global pest and
Gürbüz, S.Z., Reynolds, D.R., Koistinen, J., Liechti, F., Leijnse, H., Shamoun-Baranes, J., Dokter, A.M., Kelly, J., Chapman, J.W.   +8 more
openaire   +3 more sources

Inbound arrivals: using weather surveillance radar to quantify the diurnal timing of spring trans‐Gulf bird migration

Ecography, Volume 2023, Issue 8, August 2023., 2023
More than two billion birds migrate through the Gulf of Mexico each spring en route to breeding grounds in the USA and Canada. This region has a long history of complex natural and anthropogenic environments as the northern Gulf coast provides the first possible stopover habitats for migrants making nonstop trans‐Gulf crossings during spring migration.
Annika L. Abbott, Yuting Deng, Katie Badwey, Andrew Farnsworth, Kyle G. Horton   +4 more
wiley   +1 more source

Discrimination of Biological Scatterers in Polarimetric Weather Radar Data: Opportunities and Challenges

Remote Sensing, 2020
For radar aeroecology studies, the identification of the type of scatterer is critically important. Here, we used a random forest (RF) algorithm to develop a variety of scatterer classification models based on the backscatter values in radar resolution ...
Sidney Gauthreaux, Robert Diehl
doaj   +1 more source