Limnology of the Crater Lake Cuicocha, Ecuador, a Cold Water Tropical Lake

Gunkel, Günter; Beulker, Camilla

doi:10.1002/iroh.200811071

Cited by 19 publications

(19 citation statements)

References 39 publications

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“…Examples are the African lakes Monoun, Nyos and Kivu, the carbonate lakes in Italy (Carapezza et al 2008;Chiodini et al 2012), Kelut lake on Java (Bernard and Mazot 2004;Caudron et al 2012;Mazot and Bernard, this issue) and Quilotoa and Cuicocha lakes in Ecuador (Fig. 9, Aguilera et al 2000;Gunkel et al 2008;Gunkel and Beulker 2009).…”

Section: 8mentioning

confidence: 96%

Volcanic Lakes

Christenson

Németh

Rouwet

et al. 2015

Advances in Volcanology

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Volcanic lakes are amongst the most spectacular natural features on the planet. These intersections of magmatic-hydrothermal systems and the Earth's surface are, poetically speaking, "blue windows" into the depth of a volcano (Fig. 1). The changing water compositions and colors of these lakes over time provide insights into the volcanic, hydrothermal and degassing processes of the underlying volcano.

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Section: 8mentioning

confidence: 96%

Volcanic Lakes

Christenson

Németh

Rouwet

et al. 2015

Advances in Volcanology

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“…In Lake Taal, hydrochemical conditions and mixing patterns are greater influences to phytoplankton productivity compared to other factors such as zooplankton grazing (Rott et aI., 2008). Similarly, in other caldera lakes such as Lake Cuicocha (Ecuador) and Crater Lake (USA), zooplankton occurs down to deeper waters due to increased mixing from thermal vents (Gunkel & Beulker, 2009;Larson et aI. , 2009).…”

Section: Cym MMmentioning

confidence: 97%

“…The suspected eutrophic state prior to the introduction of FCs may be a result of volcanism. Volcanic bottom layers show geothermal activity and are nutrient rich, releasing fluxes of geomorphic Pinto the water (Golterman, 1973;Tailing & Lemoalle, 1998;Ramos, 2002;Amarasinghe et aI., 2008;Gunkel & Beulker, 2009). Some suspected thermal vents in Lake Taal are located in the OW areas (Ramos, 2002), and their geothermal activity may enhance vertical mixing and contribute to increased primary and secondary production (Amarasinghe et aI.…”

Section: Cym MMmentioning

confidence: 99%

Spatio-temporal variation of the zooplankton community in a tropical caldera lake with intensive aquaculture (Lake Taal, Philippines)

2011

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Zooplankton were collected from LakeTaal between January and December 2008 in order to test for differences in species composition and abundance between a lake basin with intensive fish cage (FC) aquaculture and an open water area without FCs. Most species showed similar patterns of occurrence in both basins while having differences in abundance. Several rotifer species were more abundant in FC sites most of the year, while for microcrustaceans higher abundances in FC sites only happened during the first 2 months. Their distribution is attributed to the presence of higher nutrient levels in FC sites as well as wind-induced basin-wide water movements during the different monsoon seasons which disperse plankton and nutrients from FC sites to other parts of the lake. Zooplanktonic indicators, (QBrr) and the ratio. of calanoids to c1adocerans and cyclopoids, clearly demonstrate the eutrophic state of the lake. A comparison with previous studies suggests that the lake was already eutrophic prior to the introduction of aquaculture in the 1970s. The trophic conditions in Lake Taal may be attributed to the lakes' tropical and volcanic nature, with productivity further enhanced by increased nutrient input from aquaculture.

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“…Ecuadorian continental waters are believed to comprise a biodiversity reservoir of enormous global significance [48]. Nevertheless, studies focused on microalgae from Ecuadorian freshwater systems are scarce and taxonomy studies only take into account its morphological features [11,49].…”

Section: Introductionmentioning

confidence: 99%

DNA barcoding approach to characterize microalgae isolated from freshwater systems in Ecuador

Ballesteros

Terán

Guamán-Burneo

et al. 2021

Neotropical Biodiversity

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The use of suitable DNA barcodes and the generation of databases with reference sequences have been considered a promissory approach for the identification of Chlorophyta and Cyanophyta microalgae. In this study, we carried out a molecular characterization and identification of strains isolated from freshwater systems in Ecuador using a dual barcode method. The target sequences for Chlorophyta were 18S rDNA and rbcL genes, and 16S rDNA and 16S-23S rDNA intergenic spacer (ITS) for Cyanophyta. We reported these DNA barcodes for 20 different Molecular Operational Taxonomic Units (MOTUs) for Chlorophyta and 10 for Cyanophyta. Our results show that the 18S V4 hypervariable region (300 bp) is sufficient for differentiating between isolates, but rbcL is a determinant for genus identification in Scenedesmaceae and Chlorellaceae strains. In Cyanophyta, both barcodes enabled the genuslevel assignment of 9 out of 10 MOTUs. These results highlight the necessity of a second barcode additional to small ribosomal subunit sequences to improve molecular identification. Furthermore, the present study significantly contributes to the body of Ecuadorian barcode sequences of microalgae that are currently documented, making them available for future comparative diversity studies.

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Limnology of the Crater Lake Cuicocha, Ecuador, a Cold Water Tropical Lake

Cited by 19 publications

References 39 publications

Volcanic Lakes

Volcanic Lakes

Spatio-temporal variation of the zooplankton community in a tropical caldera lake with intensive aquaculture (Lake Taal, Philippines)

DNA barcoding approach to characterize microalgae isolated from freshwater systems in Ecuador

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