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DOI:	10.1371/journal.pone.0150527
论文题名:	Land Use Influences Niche Size and the Assimilation of Resources by Benthic Macroinvertebrates in Tropical Headwater Streams
作者:	Diego Marcel Parreira de Castro; Débora Reis de Carvalho; Paulo dos Santos Pompeu; Marcelo Zacharias Moreira; Gabriela Bielefeld Nardoto; Marcos Callisto
刊名:	PLOS ONE
ISSN:	1932-6203
出版年:	2016
发表日期:	2016-3-2
卷:	11, 期:3
语种:	英语
英文关键词:	Land use ; Sugarcane ; Ecological niches ; Stable isotopes ; Algae ; Food consumption ; Ecosystems ; Eating habits
英文摘要:	It is well recognized that assemblage structure of stream macroinvertebrates changes with alterations in catchment or local land use. Our objective was to understand how the trophic ecology of benthic macroinvertebrate assemblages responds to land use changes in tropical streams. We used the isotope methodology to assess how energy flow and trophic relations among macroinvertebrates were affected in environments affected by different land uses (natural cover, pasture, sugar cane plantation). Macroinvertebrates were sampled and categorized into functional feeding groups, and available trophic resources were sampled and evaluated for the isotopic composition of 13C and 15N along streams located in the Cerrado (neotropical savanna). Streams altered by pasture or sugar cane had wider and more overlapped trophic niches, which corresponded to more generalist feeding habits. In contrast, trophic groups in streams with native vegetation had narrower trophic niches with smaller overlaps, suggesting greater specialization. Pasture sites had greater ranges of resources exploited, indicating higher trophic diversity than sites with natural cover and sugar cane plantation. We conclude that agricultural land uses appears to alter the food base and shift macroinvertebrate assemblages towards more generalist feeding behaviors and greater overlap of the trophic niches.
URL:	http://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0150527&type=printable
Citation statistics:
资源类型:	期刊论文
标识符:	http://119.78.100.158/handle/2HF3EXSE/23777
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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作者单位:

Universidade Federal de Minas Gerais, Instituto de Ciências Biológicas, Departamento de Biologia Geral, Laboratório de Ecologia de Bentos, Belo Horizonte, MG, Brasil;Universidade Federal de Lavras, Departamento de Biologia, Setor de Ecologia, Laboratório de Ecologia de Peixes, Lavras, MG, Brasil;Universidade Federal de Lavras, Departamento de Biologia, Setor de Ecologia, Laboratório de Ecologia de Peixes, Lavras, MG, Brasil;Universidade de São Paulo, Centro de Energia Nuclear na Agricultura–CENA, Laboratório de Ecologia Isotópica, Piracicaba, SP, Brasil;Universidade de Brasília, Instituto de Ciências Biológicas, Departamento de Ecologia, Brasília, DF, Brasil;Universidade Federal de Minas Gerais, Instituto de Ciências Biológicas, Departamento de Biologia Geral, Laboratório de Ecologia de Bentos, Belo Horizonte, MG, Brasil

Recommended Citation:

Diego Marcel Parreira de Castro,Débora Reis de Carvalho,Paulo dos Santos Pompeu,et al. Land Use Influences Niche Size and the Assimilation of Resources by Benthic Macroinvertebrates in Tropical Headwater Streams[J]. PLOS ONE,2016-01-01,11(3)

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