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Advances in the aquatic sciences
RESEARCH ARTICLE

How does the management of rice in natural ponds alter aquatic insect community functional structure?

Marina S. Dalzochio A , Renata Baldin A , Cristina Stenert A and Leonardo Maltchik A B
+ Author Affiliations
- Author Affiliations

A Laboratory of Ecology and Conservation of Aquatic Ecosystems, University of Vale do Rio dos Sinos (UNISINOS), Avenida Unisinos 950, Bairro Cristo Rei, CEP 93022-000, São Leopoldo, RS, Brazil.

B Corresponding author. Email: maltchik@unisinos.br

Marine and Freshwater Research 67(11) 1644-1654 https://doi.org/10.1071/MF14246
Submitted: 19 August 2014  Accepted: 14 April 2015   Published: 13 October 2015

Abstract

Changes to biodiversity have mainly been assessed using taxonomic diversity indices. Although these approaches contribute to our scientific understanding of species richness and composition patterns, trait-based metrics may be more useful for detecting responses to land-use change. We compared functional diversity of aquatic insect communities along a gradient of agricultural intensification. Our goal was to compare functional redundancy, functional richness, functional evenness and functional divergence among natural ponds, and organic and conventional rice fields. We recorded 15 606 aquatic insects distributed across 61 genera. The highest functional redundancy and richness were observed in the natural ponds, followed by organic rice fields and conventional ones. The functional composition varied among natural ponds and rice fields, and differed between organic and conventional rice fields. Organic management favoured the establishment of some pond insect traits, such as predatory taxa, in rice agroecosystems. Our analysis suggests that the conversion of ponds to rice fields results in a shift to less specialised aquatic insect communities with altered functional composition groups. Nevertheless, this result should not be seen as a negative reflection on organic rice fields, because organic rice production affords a better compromise between agricultural production and ecosystem function than conventional agriculture.

Additional keywords: agroecosystems, biodiversity, organic farming, traits.


References

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References

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Cardinale, B. J., Duffy, J. E., Gonzalez, A., Hooper, D. U., Perrings, C., Venail, P., Narwani, A., Mace, G. M., Tilman, D., Wardle, D. A., Kinzig, A. P., Daily, G. C., Loreau, M., Grace, J. B., Larigauderie, A., Srivastava, D., and Naeem, S. (2012). Biodiversity loss and its impact on humanity. Nature 486, 59–67.
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Casanoves, F., Pla, L., Di Rienzo, J. A., and Díaz, S. (2011). FDiversity: a software package for the integrated analysis of functional diversity. Methods in Ecology and Evolution 2, 233–237.
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Cereghino, R., Park, Y. S., Compin, A., and Lek, S. (2003). Predicting the species richness of aquatic insects in streams using a limited number of environmental variables. Journal of the North American Benthological Society 22, 442–456.
Predicting the species richness of aquatic insects in streams using a limited number of environmental variables.Crossref | GoogleScholarGoogle Scholar |

Chillo, V., Anand, M., and Ojeda, R. A. (2011). Assessing the use of functional diversity as a measure of ecological resilience in arid rangelands. Ecosystems 14, 1168–1177.
Assessing the use of functional diversity as a measure of ecological resilience in arid rangelands.Crossref | GoogleScholarGoogle Scholar |

Colzani, E., Siqueira, T., Suriano, M. T., and Roque, F. O. (2013). Responses of aquatic insect functional diversity to landscape changes in Atlantic Forest. Biotropica 45, 343–350.
Responses of aquatic insect functional diversity to landscape changes in Atlantic Forest.Crossref | GoogleScholarGoogle Scholar |

Cornwell, W. K., Schwilk, D. W., and Ackerly, D. D. (2006). A trait-based test for habitat filtering: convex hull volume. Ecology 87, 1465–1471.
A trait-based test for habitat filtering: convex hull volume.Crossref | GoogleScholarGoogle Scholar | 16869422PubMed |

Costa, C. S. I., and Simonka, C. E. (2006). ‘Insetos Imaturos. Metamorfose e identificação.’ (Holos Editora: São Paulo, Brazil.)

Crippa, L., Stenert, C., and Maltchik, L. (2013). Does the management of sandbar openings influence the macroinvertebrate communities in southern Brazil wetlands? A case study at Lagoa do Peixe National Park – Ramsar site. Ocean and Coastal Management 71, 26–32.
Does the management of sandbar openings influence the macroinvertebrate communities in southern Brazil wetlands? A case study at Lagoa do Peixe National Park – Ramsar site.Crossref | GoogleScholarGoogle Scholar |

Cummins, K. W. (1973). Trophic relations of aquatic insects. Annual Review of Entomology 18, 183–206.
Trophic relations of aquatic insects.Crossref | GoogleScholarGoogle Scholar |

Cummins, K. W., Merritt, R. W., and Andrade, P. C. N. (2005). The use of invertebrate functional groups to characterize ecosystem attributes in selected streams and rivers in south Brazil. Studies on Neotropical Fauna and Environment 40, 69–89.
The use of invertebrate functional groups to characterize ecosystem attributes in selected streams and rivers in south Brazil.Crossref | GoogleScholarGoogle Scholar |

Díaz, A. M., Alonso, M. L. S., and Gutiérrez, M. R. V. A. (2008). Biological traits of stream macroinvertebrates from a semi-arid catchment: patterns along complex environmental gradients. Freshwater Biology 53, 1–21.

Díaz, S., Lavorel, S., de Bello, F., Quétier, F., Grigulis, K., and Robson, M. (2007). Incorporating plant functional diversity effects in ecosystem service assessments. Proceedings of the National Academy of Sciences of the United States of America 104, 20 684–20 689.
Incorporating plant functional diversity effects in ecosystem service assessments.Crossref | GoogleScholarGoogle Scholar |

Dolédec, S., and Statzner, B. (2010). Responses of freshwater biota to human disturbances: contribution of J-NABS to developments in ecological integrity assessments. Journal of the North American Benthological Society 29, 286–311.
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