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Insectivorous birds consume an estimated 400–500 million tons of prey annually

In this paper, we present an estimate of the predation impact of the global population of insectivorous birds based on 103 (for the most part) published studies of prey consumption (kg ha(−1) season(−1)) of insectivorous birds in seven biome types. By extrapolation—taking into account the global lan...

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Autores principales: Nyffeler, Martin, Şekercioğlu, Çağan H., Whelan, Christopher J.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer Berlin Heidelberg 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6061143/
https://www.ncbi.nlm.nih.gov/pubmed/29987431
http://dx.doi.org/10.1007/s00114-018-1571-z
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author Nyffeler, Martin
Şekercioğlu, Çağan H.
Whelan, Christopher J.
author_facet Nyffeler, Martin
Şekercioğlu, Çağan H.
Whelan, Christopher J.
author_sort Nyffeler, Martin
collection PubMed
description In this paper, we present an estimate of the predation impact of the global population of insectivorous birds based on 103 (for the most part) published studies of prey consumption (kg ha(−1) season(−1)) of insectivorous birds in seven biome types. By extrapolation—taking into account the global land cover of the various biomes—an estimate of the annual prey consumption of the world’s insectivorous birds was obtained. We estimate the prey biomass consumed by the world’s insectivorous birds to be somewhere between 400 and 500 million metric tons year(−1), but most likely at the lower end of this range (corresponding to an energy consumption of ≈ 2.7 × 10(18) J year(−1) or ≈ 0.15% of the global terrestrial net primary production). Birds in forests account for > 70% of the global annual prey consumption of insectivorous birds (≥ 300 million tons year(−1)), whereas birds in other biomes (savannas and grasslands, croplands, deserts, and Arctic tundra) are less significant contributors (≥ 100 million tons year(−1)). Especially during the breeding season, when adult birds feed their nestlings protein-rich prey, large numbers of herbivorous insects (i.e., primarily in the orders Coleoptera, Diptera, Hemiptera, Hymenoptera, Lepidoptera, and Orthoptera) supplemented by spiders are captured. The estimates presented in this paper emphasize the ecological and economic importance of insectivorous birds in suppressing potentially harmful insect pests on a global scale—especially in forested areas. ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (10.1007/s00114-018-1571-z) contains supplementary material, which is available to authorized users.
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spelling pubmed-60611432018-08-09 Insectivorous birds consume an estimated 400–500 million tons of prey annually Nyffeler, Martin Şekercioğlu, Çağan H. Whelan, Christopher J. Naturwissenschaften Original Paper In this paper, we present an estimate of the predation impact of the global population of insectivorous birds based on 103 (for the most part) published studies of prey consumption (kg ha(−1) season(−1)) of insectivorous birds in seven biome types. By extrapolation—taking into account the global land cover of the various biomes—an estimate of the annual prey consumption of the world’s insectivorous birds was obtained. We estimate the prey biomass consumed by the world’s insectivorous birds to be somewhere between 400 and 500 million metric tons year(−1), but most likely at the lower end of this range (corresponding to an energy consumption of ≈ 2.7 × 10(18) J year(−1) or ≈ 0.15% of the global terrestrial net primary production). Birds in forests account for > 70% of the global annual prey consumption of insectivorous birds (≥ 300 million tons year(−1)), whereas birds in other biomes (savannas and grasslands, croplands, deserts, and Arctic tundra) are less significant contributors (≥ 100 million tons year(−1)). Especially during the breeding season, when adult birds feed their nestlings protein-rich prey, large numbers of herbivorous insects (i.e., primarily in the orders Coleoptera, Diptera, Hemiptera, Hymenoptera, Lepidoptera, and Orthoptera) supplemented by spiders are captured. The estimates presented in this paper emphasize the ecological and economic importance of insectivorous birds in suppressing potentially harmful insect pests on a global scale—especially in forested areas. ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (10.1007/s00114-018-1571-z) contains supplementary material, which is available to authorized users. Springer Berlin Heidelberg 2018-07-09 2018 /pmc/articles/PMC6061143/ /pubmed/29987431 http://dx.doi.org/10.1007/s00114-018-1571-z Text en © The Author(s) 2018 Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
spellingShingle Original Paper
Nyffeler, Martin
Şekercioğlu, Çağan H.
Whelan, Christopher J.
Insectivorous birds consume an estimated 400–500 million tons of prey annually
title Insectivorous birds consume an estimated 400–500 million tons of prey annually
title_full Insectivorous birds consume an estimated 400–500 million tons of prey annually
title_fullStr Insectivorous birds consume an estimated 400–500 million tons of prey annually
title_full_unstemmed Insectivorous birds consume an estimated 400–500 million tons of prey annually
title_short Insectivorous birds consume an estimated 400–500 million tons of prey annually
title_sort insectivorous birds consume an estimated 400–500 million tons of prey annually
topic Original Paper
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6061143/
https://www.ncbi.nlm.nih.gov/pubmed/29987431
http://dx.doi.org/10.1007/s00114-018-1571-z
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