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DOI: 10.1371/journal.pone.0151018
Title:
Guano-Derived Nutrient Subsidies Drive Food Web Structure in Coastal Ponds
Author: Salvatrice Vizzini; Geraldina Signa; Antonio Mazzola
Source Publication: PLOS ONE
ISSN: 1932-6203
Publishing Year: 2016
Date Published: 2016-3-8
Volume: 11, Issue:3
Language: 英语
Keyword: Ponds ; Food web structure ; Nutrients ; Food ; Food consumption ; Gulls ; Diet ; Seabirds
English Abstract: A stable isotope study was carried out seasonally in three coastal ponds (Marinello system, Italy) affected by different gull guano input to investigate the effect of nutrient subsidies on food web structure and dynamics. A marked 15N enrichment occurred in the pond receiving the highest guano input, indicating that gull-derived fertilization (guanotrophication) had a strong localised effect and flowed across trophic levels. The main food web response to guanotrophication was an overall erosion of the benthic pathway in favour of the planktonic. Subsidized primary consumers, mostly deposit feeders, switched their diet according to organic matter source availability. Secondary consumers and, in particular, fish from the guanotrophic pond, acted as couplers of planktonic and benthic pathways and showed an omnivorous trophic behaviour. Food web structure showed substantial variability among ponds and a marked seasonality in the subsidized one: an overall simplification was evident only in summer when guano input maximises its trophic effects, while higher trophic diversity and complexity resulted when guano input was low to moderate.
Related Link: http://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0151018&type=printable
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被引频次[WOS]:8   [查看WOS记录]     [查看WOS中相关记录]
Document Type: 期刊论文
Identifier: http://119.78.100.158/handle/2HF3EXSE/23764
Appears in Collections:过去全球变化的重建
影响、适应和脆弱性
科学计划与规划
气候变化与战略
全球变化的国际研究计划
气候减缓与适应
气候变化事实与影响

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Affiliation: Department of Earth and Marine Sciences, University of Palermo, CoNISMa, via Archirafi 18, 90123 Palermo, Italy;Department of Earth and Marine Sciences, University of Palermo, CoNISMa, via Archirafi 18, 90123 Palermo, Italy;Department of Earth and Marine Sciences, University of Palermo, CoNISMa, via Archirafi 18, 90123 Palermo, Italy

Recommended Citation:
Salvatrice Vizzini,Geraldina Signa,Antonio Mazzola. Guano-Derived Nutrient Subsidies Drive Food Web Structure in Coastal Ponds[J]. PLOS ONE,2016-01-01,11(3)
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