Bioindicators of climate and trophic state in lowland and highland aquatic ecosystems of the Northern Neotropics
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| Format: | Artículo científico |
| Language: | en |
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Universidad de Costa Rica
2013
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| author | Liseth Pérez |
| author_facet | Liseth Pérez |
| contents | Bioindicators of climate and trophic state in lowland and highland aquatic ecosystems of the Northern Neotropics Liseth Pérez Julia Lorenschat Julieta Massaferro Christine Pailles Florence Sylvestre Werner Hollwedel Gerd-Oltmann Brandorff Mark Brenner Gerald Islebe María del Socorro Lozano Burkhard Scharf Antje Schwalb Biología diatom diversity chironomid autecology bioindicators Chironomids, diatoms and microcrustaceans that inhabit aquatic ecosystems of the Northern Neotropics are abundant and diverse. Some species are highly sensitive to changes in water chemical composi- tion and trophic state. This study was undertaken as a first step in developing transfer functions to infer past environmental conditions in the Northern lowland Neotropics. Bioindicator species abundances were related to multiple environmental variables to exploit their use as environmental and paleoenvironmental indicators. We collected and analyzed water and surface sediment samples from 63 waterbodies located along a broad trophic state gradient and steep gradients of altitude (~0-1 560m.a.s.l.) and precipitation (~400-3 200mm/y), from NW Yucatán Peninsula (Mexico) to southern Guatemala. We related 14 limnological variables to relative abundances of 282 diatom species, 66 chironomid morphospecies, 51 species of cladocerans, 29 non-marine ostracode species and six freshwater calanoid copepods. Multivariate statistics indicated that bicarbonate is the strongest driver of chironomid and copepod distribution. Trophic state is the second most important factor that determines chironomid distribution. Conductivity, which is related to the precipitation gradient and marine influence on the Yucatán Peninsula, is the main variable that shapes diatom, ostracode and cladoceran communities. Diatoms, chironomids and cladocerans displayed higher diversities (H=2.4-2.6) than ostracodes and copepods (H=0.7- 1.8). Species richness and diversity were greater at lower elevations (<450m.a.s.l.) than at higher elevations in Guatemala. Distribution and diversity of bioindicators are influenced by multiple factors including altitude, precipitation, water chemistry, trophic state and human impact. Rev. Biol. Trop. 61 (2): 603-644. Epub 2013 June 01. 2013 artículo científico 0034-7744 https://www.redalyc.org/articulo.oa?id=44927436013 en http://www.redalyc.org/revista.oa?id=449 Revista de Biología Tropical application/pdf Universidad de Costa Rica Revista de Biología Tropical (Costa Rica) Num.2 Vol.61 |
| format | Artículo científico |
| id | redalyc_44927436013 |
| institution | Redalyc |
| language | en |
| publishDate | 2013 |
| publisher | Universidad de Costa Rica |
| spellingShingle | Bioindicators of climate and trophic state in lowland and highland aquatic ecosystems of the Northern Neotropics Liseth Pérez Biología diatom diversity chironomid autecology bioindicators Bioindicators of climate and trophic state in lowland and highland aquatic ecosystems of the Northern Neotropics Liseth Pérez Julia Lorenschat Julieta Massaferro Christine Pailles Florence Sylvestre Werner Hollwedel Gerd-Oltmann Brandorff Mark Brenner Gerald Islebe María del Socorro Lozano Burkhard Scharf Antje Schwalb Biología diatom diversity chironomid autecology bioindicators Chironomids, diatoms and microcrustaceans that inhabit aquatic ecosystems of the Northern Neotropics are abundant and diverse. Some species are highly sensitive to changes in water chemical composi- tion and trophic state. This study was undertaken as a first step in developing transfer functions to infer past environmental conditions in the Northern lowland Neotropics. Bioindicator species abundances were related to multiple environmental variables to exploit their use as environmental and paleoenvironmental indicators. We collected and analyzed water and surface sediment samples from 63 waterbodies located along a broad trophic state gradient and steep gradients of altitude (~0-1 560m.a.s.l.) and precipitation (~400-3 200mm/y), from NW Yucatán Peninsula (Mexico) to southern Guatemala. We related 14 limnological variables to relative abundances of 282 diatom species, 66 chironomid morphospecies, 51 species of cladocerans, 29 non-marine ostracode species and six freshwater calanoid copepods. Multivariate statistics indicated that bicarbonate is the strongest driver of chironomid and copepod distribution. Trophic state is the second most important factor that determines chironomid distribution. Conductivity, which is related to the precipitation gradient and marine influence on the Yucatán Peninsula, is the main variable that shapes diatom, ostracode and cladoceran communities. Diatoms, chironomids and cladocerans displayed higher diversities (H=2.4-2.6) than ostracodes and copepods (H=0.7- 1.8). Species richness and diversity were greater at lower elevations (<450m.a.s.l.) than at higher elevations in Guatemala. Distribution and diversity of bioindicators are influenced by multiple factors including altitude, precipitation, water chemistry, trophic state and human impact. Rev. Biol. Trop. 61 (2): 603-644. Epub 2013 June 01. 2013 artículo científico 0034-7744 https://www.redalyc.org/articulo.oa?id=44927436013 en http://www.redalyc.org/revista.oa?id=449 Revista de Biología Tropical application/pdf Universidad de Costa Rica Revista de Biología Tropical (Costa Rica) Num.2 Vol.61 |
| title | Bioindicators of climate and trophic state in lowland and highland aquatic ecosystems of the Northern Neotropics |
| topic | Biología diatom diversity chironomid autecology bioindicators |
| url | https://www.redalyc.org/articulo.oa?id=44927436013 |