Riparian coverage affects diets of characids in neotropical streams
Identifieur interne : 000439 ( Main/Exploration ); précédent : 000438; suivant : 000440Riparian coverage affects diets of characids in neotropical streams
Auteurs : Anderson Ferreira [Brésil] ; Felipe R. De Paula [Brésil] ; Silvio F. De Barros Ferraz [Brésil] ; Pedro Gerhard [Brésil] ; Elaine A. L. Kashiwaqui [Brésil] ; José E. P. Cyrino [Brésil] ; Luiz A. Martinelli [Brésil]Source :
- Ecology of Freshwater Fish [ 0906-6691 ] ; 2012-01.
English descriptors
- KwdEn :
Abstract
Abstract – Aquatic ecosystems are influenced by the surrounding terrestrial environment. This work studied the influence of vegetation of riparian zones on the feeding patterns of two nektonic characids, Astyanax paranae and Bryconamericus iheringii, in a basin surrounded by an agricultural area. Nine streams within the Corumbataí River basin (São Paulo State, Brazil) with varying proportions of adjacent riparian forest (RF) and pastures were set apart in three arbitrary categories: Riparian Forest (>90% RF), Mixed Coverage (banks covered by 30–60% RF; MC) and Pasture (<29% RF, PA); resident characids were sampled in the dry and rainy seasons and evaluated in regard to composition of diets. Astyanax paranae fed on allochthonous food sources in RF and MC, and on autochthonous food sources on PA streams; B. iheringii fed on autochthonous food sources in RF streams and in mixed resources (detritus and sediment) in PA streams. Selection of food source was related to, and altered by, stream channel structure and composition of substratum. Preservation and restoration of native riparian vegetation is key to preservation of resident characids in small streams of this river basin.
Url:
DOI: 10.1111/j.1600-0633.2011.00518.x
Affiliations:
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This work studied the influence of vegetation of riparian zones on the feeding patterns of two nektonic characids, Astyanax paranae and Bryconamericus iheringii, in a basin surrounded by an agricultural area. Nine streams within the Corumbataí River basin (São Paulo State, Brazil) with varying proportions of adjacent riparian forest (RF) and pastures were set apart in three arbitrary categories: Riparian Forest (>90% RF), Mixed Coverage (banks covered by 30–60% RF; MC) and Pasture (<29% RF, PA); resident characids were sampled in the dry and rainy seasons and evaluated in regard to composition of diets. Astyanax paranae fed on allochthonous food sources in RF and MC, and on autochthonous food sources on PA streams; B. iheringii fed on autochthonous food sources in RF streams and in mixed resources (detritus and sediment) in PA streams. Selection of food source was related to, and altered by, stream channel structure and composition of substratum. Preservation and restoration of native riparian vegetation is key to preservation of resident characids in small streams of this river basin.</div></front></TEI><affiliations><list><country><li>Brésil</li></country><region><li>Pará</li><li>État de São Paulo</li></region><settlement><li>São Paulo</li></settlement><orgName><li>Université de São Paulo</li></orgName></list><tree><country name="Brésil"><region name="État de São Paulo"><name sortKey="Ferreira, Anderson" sort="Ferreira, Anderson" uniqKey="Ferreira A" first="Anderson" last="Ferreira">Anderson Ferreira</name></region><name sortKey="Cyrino, Jose E P" sort="Cyrino, Jose E P" uniqKey="Cyrino J" first="José E. P." last="Cyrino">José E. P. Cyrino</name><name sortKey="De Barros Ferraz, Silvio F" sort="De Barros Ferraz, Silvio F" uniqKey="De Barros Ferraz S" first="Silvio F." last="De Barros Ferraz">Silvio F. De Barros Ferraz</name><name sortKey="De Paula, Felipe R" sort="De Paula, Felipe R" uniqKey="De Paula F" first="Felipe R." last="De Paula">Felipe R. De Paula</name><name sortKey="Gerhard, Pedro" sort="Gerhard, Pedro" uniqKey="Gerhard P" first="Pedro" last="Gerhard">Pedro Gerhard</name><name sortKey="Kashiwaqui, Elaine A L" sort="Kashiwaqui, Elaine A L" uniqKey="Kashiwaqui E" first="Elaine A. L." last="Kashiwaqui">Elaine A. L. Kashiwaqui</name><name sortKey="Martinelli, Luiz A" sort="Martinelli, Luiz A" uniqKey="Martinelli L" first="Luiz A." last="Martinelli">Luiz A. Martinelli</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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