Aquatic biodiversity across a hydroperiod gradient of lakes, ponds, and wetlands in Torres del Paine National Park, Chile

Abstract: Understanding how communities are structured under relatively pristine conditions is critical to understanding their ecology and evolution. In this study, we examined the structure of aquatic communities in the Torres del Paine National Park in Chilean Patagonia. Using dipnet surveys, we q...

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Autores principales:	Glaude,Christine M., Relyea,Rick A., Ortega,Isaac M.
Lenguaje:	English
Publicado:	Universidad de Magallanes 2018
Materias:	aquatic community wetlands hydroperiod gradient Torres del Paine Patagonia Chile
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-686X2018000200007
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spelling	oai:scielo:S0718-686X20180002000072018-10-24Aquatic biodiversity across a hydroperiod gradient of lakes, ponds, and wetlands in Torres del Paine National Park, ChileGlaude,Christine M.Relyea,Rick A.Ortega,Isaac M. aquatic community wetlands hydroperiod gradient Torres del Paine Patagonia Chile Abstract: Understanding how communities are structured under relatively pristine conditions is critical to understanding their ecology and evolution. In this study, we examined the structure of aquatic communities in the Torres del Paine National Park in Chilean Patagonia. Using dipnet surveys, we quantified the distribution of larval anurans and all macroinvertebrates from 81 habitats across a hydroperiod gradient (lakes, ponds, permanent wetlands, semi-permanent wetlands, and temporary wetlands). Compared to surveys conducted at similar northern latitudes that have high species richness and hydroperiod specialization, Patagonian habitats contained a dramatically lower richness with many taxa widely distributed across the hydroperiod gradient. Overall, taxonomic richness was lowest in temporary wetlands and lakes, but highest in habitats with intermediate hydroperiods. The cause of this unimodal relationship was a small decline in the prevalence of all taxa on the temporary end of the gradient (due to habitat desiccation) but a complete exclusion of several taxa on the most permanent end of the gradient (due to fish predation). These results are consistent with North American studies of aquatic communities and lend support to the hypothesized effect of disturbance on the distribution of biodiversity. The fact that most biodiversity occurs in the temporary and intermediate hydroperiods underscores the importance of managing the full range of aquatic communities rather than only concentrating on the larger and more apparent lakes.info:eu-repo/semantics/openAccessUniversidad de MagallanesAnales del Instituto de la Patagonia v.46 n.2 20182018-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-686X2018000200007en10.4067/S0718-686X2018000200007
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	aquatic community wetlands hydroperiod gradient Torres del Paine Patagonia Chile
spellingShingle	aquatic community wetlands hydroperiod gradient Torres del Paine Patagonia Chile Glaude,Christine M. Relyea,Rick A. Ortega,Isaac M. Aquatic biodiversity across a hydroperiod gradient of lakes, ponds, and wetlands in Torres del Paine National Park, Chile
description	Abstract: Understanding how communities are structured under relatively pristine conditions is critical to understanding their ecology and evolution. In this study, we examined the structure of aquatic communities in the Torres del Paine National Park in Chilean Patagonia. Using dipnet surveys, we quantified the distribution of larval anurans and all macroinvertebrates from 81 habitats across a hydroperiod gradient (lakes, ponds, permanent wetlands, semi-permanent wetlands, and temporary wetlands). Compared to surveys conducted at similar northern latitudes that have high species richness and hydroperiod specialization, Patagonian habitats contained a dramatically lower richness with many taxa widely distributed across the hydroperiod gradient. Overall, taxonomic richness was lowest in temporary wetlands and lakes, but highest in habitats with intermediate hydroperiods. The cause of this unimodal relationship was a small decline in the prevalence of all taxa on the temporary end of the gradient (due to habitat desiccation) but a complete exclusion of several taxa on the most permanent end of the gradient (due to fish predation). These results are consistent with North American studies of aquatic communities and lend support to the hypothesized effect of disturbance on the distribution of biodiversity. The fact that most biodiversity occurs in the temporary and intermediate hydroperiods underscores the importance of managing the full range of aquatic communities rather than only concentrating on the larger and more apparent lakes.
author	Glaude,Christine M. Relyea,Rick A. Ortega,Isaac M.
author_facet	Glaude,Christine M. Relyea,Rick A. Ortega,Isaac M.
author_sort	Glaude,Christine M.
title	Aquatic biodiversity across a hydroperiod gradient of lakes, ponds, and wetlands in Torres del Paine National Park, Chile
title_short	Aquatic biodiversity across a hydroperiod gradient of lakes, ponds, and wetlands in Torres del Paine National Park, Chile
title_full	Aquatic biodiversity across a hydroperiod gradient of lakes, ponds, and wetlands in Torres del Paine National Park, Chile
title_fullStr	Aquatic biodiversity across a hydroperiod gradient of lakes, ponds, and wetlands in Torres del Paine National Park, Chile
title_full_unstemmed	Aquatic biodiversity across a hydroperiod gradient of lakes, ponds, and wetlands in Torres del Paine National Park, Chile
title_sort	aquatic biodiversity across a hydroperiod gradient of lakes, ponds, and wetlands in torres del paine national park, chile
publisher	Universidad de Magallanes
publishDate	2018
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-686X2018000200007
work_keys_str_mv	AT glaudechristinem aquaticbiodiversityacrossahydroperiodgradientoflakespondsandwetlandsintorresdelpainenationalparkchile AT relyearicka aquaticbiodiversityacrossahydroperiodgradientoflakespondsandwetlandsintorresdelpainenationalparkchile AT ortegaisaacm aquaticbiodiversityacrossahydroperiodgradientoflakespondsandwetlandsintorresdelpainenationalparkchile
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Aquatic biodiversity across a hydroperiod gradient of lakes, ponds, and wetlands in Torres del Paine National Park, Chile

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