Environmental effects on flying migrants revealed by radar

Paolo Becciu , Myles H. M. Menz , Annika Aurbach , Sergio A. Cabrera‐Cruz , Charlotte E. Wainwright , Martina Scacco , Michał Ciach , Lars B. Pettersson , Ivan Maggini , Gonzalo M. Arroyo , Jeffrey J. Buler , Don R. Reynolds , Nir Sapir

Abstract

Migratory animals are affected by various factors during their journeys, and the study of animal movement by radars has been instrumental in revealing key influences of the environment on flying migrants. Radars enable the simultaneous tracking of many individuals of almost all sizes within the radar range during day and night, and under low visibility conditions. We review how atmospheric conditions, geographic features and human development affect the behavior of migrating insects and birds as recorded by radars. We focus on flight initiation and termination, as well as in-flight behavior that includes changes in animal flight direction, speed and altitude. We have identified several similarities and differences in the behavioral responses of aerial migrants including an overlooked similarity in the use of thermal updrafts by very small (e.g. aphids) and very large (e.g. vultures) migrants. We propose that many aerial migrants modulate their migratory flights in relation to the interaction between atmospheric conditions and geographic features. For example, aerial migrants that encounter crosswind may terminate their flight or continue their migration and may also drift or compensate for lateral displacement depending on their position (over land, near the coast or over sea). We propose several promising directions for future research, including the development and application of algorithms for tracking insects, bats and large aggregations of animals using weather radars. Additionally, an important contribution will be the spatial expansion of aeroecological radar studies to Africa, most of Asia and South America where no such studies have been undertaken. Quantifying the role of migrants in ecosystems and specifically estimating the number of departing birds from stopover sites using low-elevation radar scans is important for quantifying migrant– habitat relationships. This information, together with estimates of population demographics and migrant abundance, can help resolve the long-term dynamics of migrant populations facing large-scale environmental changes.
Author Paolo Becciu
Paolo Becciu,,
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, Myles H. M. Menz
Myles H. M. Menz,,
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, Annika Aurbach
Annika Aurbach,,
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, Sergio A. Cabrera‐Cruz
Sergio A. Cabrera‐Cruz,,
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, Charlotte E. Wainwright
Charlotte E. Wainwright,,
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, Martina Scacco
Martina Scacco,,
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, Michał Ciach (FoF / IoEaS / DBL)
Michał Ciach,,
- DEPOSIT BIOGENIC DEPARTMENT
, Lars B. Pettersson
Lars B. Pettersson,,
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, Ivan Maggini
Ivan Maggini,,
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, Gonzalo M. Arroyo
Gonzalo M. Arroyo,,
-
et al.`
Journal seriesEcography, ISSN 0906-7590, e-ISSN 1600-0587, (N/A 100 pkt)
Issue year2019
Vol42
No5
Pages942-955
Publication size in sheets0.65
Keywords in English behavioral responses, bird migration, geographic features, human development, insect migration, meteorological conditions, radar aeroecology
ASJC Classification1107 Forestry
DOIDOI:10.1111/ecog.03995
URL https://onlinelibrary.wiley.com/doi/pdf/10.1111/ecog.03995%4010.1111/%28ISSN%291600-0587.radar-aeroecology
Languageen angielski
LicenseJournal (articles only); author's final; Uznanie Autorstwa - Użycie Niekomercyjne (CC-BY-NC); after publication
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Environmental effects on flying migrants revealed by radar of 23-07-2019
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Environmental effects on flying migrants revealed by radar
Score (nominal)100
Score sourcejournalList
Publication indicators WoS Citations = 2; Scopus SNIP (Source Normalised Impact per Paper): 2018 = 1.86; WoS Impact Factor: 2018 = 5.946 (2) - 2018=6.691 (5)
Citation count*10 (2020-08-07)
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* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.
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