Arid
DOI10.1002/ece3.1523
Ecosystem recharge by volcanic dust drives broad-scale variation in bird abundance
Gunnarsson, Tomas Gretar1; Arnalds, Olafur2; Appleton, Graham3; Mendez, Veronica1; Gill, Jennifer A.4
通讯作者Gunnarsson, Tomas Gretar
来源期刊ECOLOGY AND EVOLUTION
ISSN2045-7758
出版年2015
卷号5期号:12页码:2386-2396
英文摘要

Across the globe, deserts and volcanic eruptions produce large volumes of atmospheric dust, and the amount of dust is predicted to increase with global warming. The effects of long-distance airborne dust inputs on ecosystem productivity are potentially far-reaching but have primarily been measured in soil and plants. Airborne dust could also drive distribution and abundance at higher trophic levels, but opportunities to explore these relationships are rare. Here we use Iceland’s steep dust deposition gradients to assess the influence of dust on the distribution and abundance of internationally important ground-nesting bird populations. Surveys of the abundance of breeding birds at 729 locations throughout lowland Iceland were used to explore the influence of dust deposition on bird abundance in agricultural, dry, and wet habitats. Dust deposition had a strong positive effect on bird abundance across Iceland in dry and wet habitats, but not in agricultural land where nutrient levels are managed. The abundance of breeding waders, the dominant group of terrestrial birds in Iceland, tripled on average between the lowest and highest dust deposition classes in both wet and dry habitats. The deposition and redistribution of volcanic materials can have powerful impacts in terrestrial ecosystems and can be a major driver of the abundance of higher trophic-level organisms at broad spatial scales. The impacts of volcanic ash deposition during eruptions and subsequent redistribution of unstable volcanic materials are strong enough to override effects of underlying variation in organic matter and clay content on ecosystem fertility. Global rates of atmospheric dust deposition are likely to increase with increasing desertification and glacier retreat, and this study demonstrates that the effects on ecosystems are likely to be far-reaching, both in terms of spatial scales and ecosystem components.


英文关键词Atmospheric dust bird abundance desertification ecosystem recharge ecosystems global warming shorebirds volcanic dust
类型Article
语种英语
国家Iceland ; England
收录类别SCI-E
WOS记录号WOS:000356370400008
WOS关键词AEOLIAN DUST ; WIND EROSION ; AFRICAN DUST ; ICELAND ; ASH ; DEPOSITION ; SOILS ; OCEAN ; REJUVENATION ; ASSOCIATIONS
WOS类目Ecology ; Evolutionary Biology
WOS研究方向Environmental Sciences & Ecology ; Evolutionary Biology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/186835
作者单位1.Univ Iceland, South Iceland Res Ctr, IS-800 Bankavegur, Selfoss, Iceland;
2.Agr Univ Iceland, Fac Environm Sci, IS-311 Hvanneyri, Borgarnes, Iceland;
3.Nunnery, British Trust Ornithol, Thetford IP24 2PU, Norfolk, England;
4.Univ E Anglia, Sch Biol Sci, Norwich NR4 7TJ, Norfolk, England
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GB/T 7714
Gunnarsson, Tomas Gretar,Arnalds, Olafur,Appleton, Graham,et al. Ecosystem recharge by volcanic dust drives broad-scale variation in bird abundance[J],2015,5(12):2386-2396.
APA Gunnarsson, Tomas Gretar,Arnalds, Olafur,Appleton, Graham,Mendez, Veronica,&Gill, Jennifer A..(2015).Ecosystem recharge by volcanic dust drives broad-scale variation in bird abundance.ECOLOGY AND EVOLUTION,5(12),2386-2396.
MLA Gunnarsson, Tomas Gretar,et al."Ecosystem recharge by volcanic dust drives broad-scale variation in bird abundance".ECOLOGY AND EVOLUTION 5.12(2015):2386-2396.
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