Grupos funcionales alimentarios de macroinvertebrados acuáticos en el río Gaira, Colombia
Functional feeding groups of macroinvertebrates in Gaira river, Colombia. Tropical rivers are frequently described on their biodiversity but few studies have considered the ecological value of this richness in their food webs. We determined the trophic structure of aquatic macroinvertebrate communit...
| Authors: | , , |
|---|---|
| Format: | article |
| Status: | Published version |
| Publication Date: | 2011 |
| Country: | Costa Rica |
| Institution: | Universidad de Costa Rica |
| Repository: | Portal de Revistas UCR |
| Language: | Spanish |
| OAI Identifier: | oai:portal.ucr.ac.cr:article/3418 |
| Online Access: | https://revistas.ucr.ac.cr/index.php/rbt/article/view/3418 |
| Access Level: | Open access |
| Keyword: | aquatic macroinvertebrates food functional groups functional units tropical stream mountain biomass macroinvertebrados acuáticos grupos funcionales alimentarios unidades funcionales río tropical de montaña biomasa |
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Grupos funcionales alimentarios de macroinvertebrados acuáticos en el río Gaira, ColombiaRodríguez-Barrios, JavierOspina-Tórres, RodulfoTurizo-Correa, Rodrigoaquatic macroinvertebratesfood functional groupsfunctional unitstropical stream mountainbiomassmacroinvertebrados acuáticosgrupos funcionales alimentariosunidades funcionalesrío tropical de montañabiomasaFunctional feeding groups of macroinvertebrates in Gaira river, Colombia. Tropical rivers are frequently described on their biodiversity but few studies have considered the ecological value of this richness in their food webs. We determined the trophic structure of aquatic macroinvertebrate communities (expressed in the richness and abundance of taxa and biomass proportions of different functional feeding groups) at the level of the river, stretch and microhabitats (functional units - UFs). We evaluated the spatial and temporal variation of these descriptors during wet and dry events, and selected three sites associated with different altitudinal belts. We reported 109 taxa, with 11 167 individuals who contributed 107.11g of biomass. Density of macroinvertebrates was favored with increasing height, and biomass showed the opposite pattern (K-W=10.1, d.f.=1, p < 0.05), due to the addition of large crustaceans (Macrobrachium), and the taxa diversity was higher in the middle stretch of the river (H?=3.16). The Gaira stream runs through a mid-sized river basin, for this reason we found mainly bedrock (epilithon=50.5%), gravel and sand (43.7%). The functional unit with more habitat and food resources that contains a higher abundance of leaf litter macroinvertebrates was foliage followed by epilithon, fine sediment and gravel-sand (K-W=25.3, d.f.=3, p < 0.05). The biomass values of these organisms were higher in leaves followed by gravel-sands, epilithon and sediment (K-W=15.3, d.f.=3, p < 0.05). Autochthonous biomass input by different functional feeding groups can be considered very low, but they define the functionality of the stream, being represented almost exclusively by shredders (Macrobrachium, 73%), present only in the lower reaches, followed by shredder Leptonema with 15%, located mostly in the upper reaches and predatory stoneflies of the genus Anacroneuria to 6.56%, which dominated in the middle stretch of stream. Excluding Macrobrachium from the analysis, there was dominance of Anacroneuria in the lower reaches. Between rainfall and drought events, biomass of functional feeding groups was higher in rain (W=10.1, d.f.=1, p < 0.05), favoring the growth of decapods, but the abundance was much higher during drought events.Universidad de Costa Rica2011-12-01info:eu-repo/semantics/publishedVersionArticleTextartículo originalhttp://purl.org/coar/resource_type/c_2df8fbb1info:eu-repo/semantics/articleapplication/pdfhttps://revistas.ucr.ac.cr/index.php/rbt/article/view/341810.15517/rbt.v59i4.3418Revista de Biología Tropical; Vol. 59 No. 4 (2011): Volume 59 – Regular number 4 – December 2011; 1537–1552Revista de Biología Tropical; Vol. 59 Núm. 4 (2011): Volumen 59 – Número regular 4 – Diciembre 2011; 1537–1552Revista Biología Tropical; Vol. 59 N.º 4 (2011): Volumen 59 – Número regular 4 – Diciembre 2011; 1537–15522215-20750034-774410.15517/rbt.v59i4reponame:Portal de Revistas UCRinstname:Universidad de Costa Ricainstacron:UCRspahttps://revistas.ucr.ac.cr/index.php/rbt/article/view/3418/3322Derechos de autor 2011 Revista de Biología Tropicalhttp://creativecommons.org/licenses/by/4.0acceso abiertohttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccess2022-06-06T18:59:48Zoai:portal.ucr.ac.cr:article/3418Portal de revistashttps://revistas.ucr.ac.cr/Universidadhttp://www.ucr.ac.crhttps://revistas.ucr.ac.cr/index.php/index/oaijorge.polanco@ucr.ac.crCosta RicaNo aplicaNo aplicaNo aplicaopendoar:2025-08-13T10:13:42.053Portal de Revistas UCR - Universidad de Costa Ricafalse |
| dc.title.none.fl_str_mv |
Grupos funcionales alimentarios de macroinvertebrados acuáticos en el río Gaira, Colombia |
| title |
Grupos funcionales alimentarios de macroinvertebrados acuáticos en el río Gaira, Colombia |
| spellingShingle |
Grupos funcionales alimentarios de macroinvertebrados acuáticos en el río Gaira, Colombia Rodríguez-Barrios, Javier aquatic macroinvertebrates food functional groups functional units tropical stream mountain biomass macroinvertebrados acuáticos grupos funcionales alimentarios unidades funcionales río tropical de montaña biomasa |
| title_short |
Grupos funcionales alimentarios de macroinvertebrados acuáticos en el río Gaira, Colombia |
| title_full |
Grupos funcionales alimentarios de macroinvertebrados acuáticos en el río Gaira, Colombia |
| title_fullStr |
Grupos funcionales alimentarios de macroinvertebrados acuáticos en el río Gaira, Colombia |
| title_full_unstemmed |
Grupos funcionales alimentarios de macroinvertebrados acuáticos en el río Gaira, Colombia |
| title_sort |
Grupos funcionales alimentarios de macroinvertebrados acuáticos en el río Gaira, Colombia |
| dc.creator.none.fl_str_mv |
Rodríguez-Barrios, Javier Ospina-Tórres, Rodulfo Turizo-Correa, Rodrigo |
| author |
Rodríguez-Barrios, Javier |
| author_facet |
Rodríguez-Barrios, Javier Ospina-Tórres, Rodulfo Turizo-Correa, Rodrigo |
| author_role |
author |
| author2 |
Ospina-Tórres, Rodulfo Turizo-Correa, Rodrigo |
| author2_role |
author author |
| dc.subject.none.fl_str_mv |
aquatic macroinvertebrates food functional groups functional units tropical stream mountain biomass macroinvertebrados acuáticos grupos funcionales alimentarios unidades funcionales río tropical de montaña biomasa |
| topic |
aquatic macroinvertebrates food functional groups functional units tropical stream mountain biomass macroinvertebrados acuáticos grupos funcionales alimentarios unidades funcionales río tropical de montaña biomasa |
| description |
Functional feeding groups of macroinvertebrates in Gaira river, Colombia. Tropical rivers are frequently described on their biodiversity but few studies have considered the ecological value of this richness in their food webs. We determined the trophic structure of aquatic macroinvertebrate communities (expressed in the richness and abundance of taxa and biomass proportions of different functional feeding groups) at the level of the river, stretch and microhabitats (functional units - UFs). We evaluated the spatial and temporal variation of these descriptors during wet and dry events, and selected three sites associated with different altitudinal belts. We reported 109 taxa, with 11 167 individuals who contributed 107.11g of biomass. Density of macroinvertebrates was favored with increasing height, and biomass showed the opposite pattern (K-W=10.1, d.f.=1, p < 0.05), due to the addition of large crustaceans (Macrobrachium), and the taxa diversity was higher in the middle stretch of the river (H?=3.16). The Gaira stream runs through a mid-sized river basin, for this reason we found mainly bedrock (epilithon=50.5%), gravel and sand (43.7%). The functional unit with more habitat and food resources that contains a higher abundance of leaf litter macroinvertebrates was foliage followed by epilithon, fine sediment and gravel-sand (K-W=25.3, d.f.=3, p < 0.05). The biomass values of these organisms were higher in leaves followed by gravel-sands, epilithon and sediment (K-W=15.3, d.f.=3, p < 0.05). Autochthonous biomass input by different functional feeding groups can be considered very low, but they define the functionality of the stream, being represented almost exclusively by shredders (Macrobrachium, 73%), present only in the lower reaches, followed by shredder Leptonema with 15%, located mostly in the upper reaches and predatory stoneflies of the genus Anacroneuria to 6.56%, which dominated in the middle stretch of stream. Excluding Macrobrachium from the analysis, there was dominance of Anacroneuria in the lower reaches. Between rainfall and drought events, biomass of functional feeding groups was higher in rain (W=10.1, d.f.=1, p < 0.05), favoring the growth of decapods, but the abundance was much higher during drought events. |
| publishDate |
2011 |
| dc.date.none.fl_str_mv |
2011-12-01 |
| dc.type.none.fl_str_mv |
info:eu-repo/semantics/publishedVersion Article Text artículo original http://purl.org/coar/resource_type/c_2df8fbb1 info:eu-repo/semantics/article |
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article |
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publishedVersion |
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https://revistas.ucr.ac.cr/index.php/rbt/article/view/3418 10.15517/rbt.v59i4.3418 |
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https://revistas.ucr.ac.cr/index.php/rbt/article/view/3418 |
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10.15517/rbt.v59i4.3418 |
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spa |
| language |
spa |
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https://revistas.ucr.ac.cr/index.php/rbt/article/view/3418/3322 |
| dc.rights.none.fl_str_mv |
Derechos de autor 2011 Revista de Biología Tropical http://creativecommons.org/licenses/by/4.0 acceso abierto http://purl.org/coar/access_right/c_abf2 info:eu-repo/semantics/openAccess |
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Derechos de autor 2011 Revista de Biología Tropical http://creativecommons.org/licenses/by/4.0 acceso abierto http://purl.org/coar/access_right/c_abf2 |
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openAccess |
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application/pdf |
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Universidad de Costa Rica |
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Universidad de Costa Rica |
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Revista de Biología Tropical; Vol. 59 No. 4 (2011): Volume 59 – Regular number 4 – December 2011; 1537–1552 Revista de Biología Tropical; Vol. 59 Núm. 4 (2011): Volumen 59 – Número regular 4 – Diciembre 2011; 1537–1552 Revista Biología Tropical; Vol. 59 N.º 4 (2011): Volumen 59 – Número regular 4 – Diciembre 2011; 1537–1552 2215-2075 0034-7744 10.15517/rbt.v59i4 reponame:Portal de Revistas UCR instname:Universidad de Costa Rica instacron:UCR |
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Portal de Revistas UCR |
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Portal de Revistas UCR - Universidad de Costa Rica |
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jorge.polanco@ucr.ac.cr |
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