Aquatic ecosystems of the Yucatán Peninsula (Mexico), Belize, and Guatemala
This study presents limnological and morphological characteristics, physical and chemical properties of waters, and geochemistry of surface sediments for 63 aquatic ecosystems located on the karst Yucatán Peninsula and surrounding areas of Belize and the Guatemalan highlands and eastern lowlands. Our principal goal was to classify the aquatic systems based on their water variables. A principal component analysis (PCA) of the surface water chemistry data showed that a large fraction of the variance (29%) in water chemistry is explained by conductivity and major ion concentrations. The broad conductivity range, from 168 to 55,300 μS cm−1 reflects saline water intrusion affecting coastal aquatic environments, and the steep NW-S precipitation gradient, from ~450 to >3,200 mm year−1. Coastal waterbodies Celestún and Laguna Rosada displayed the highest conductivities. Minimum surface water temperatures of 21.6°C were measured in highland lakes, and warmest temperatures, up to 31.7°C, were recorded in the lowland waterbodies. Most lakes showed thermal stratification during the sampling period, with the exception of some shallow (<10 m) systems. Lakes Chichancanab, Milagros, and Bacalar displayed sulfate-rich waters. Waters of sinkholes had relatively high conductivities (<3,670 μS cm−1) and a broad range of δ18O values (−4.1 to +3.8‰).
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| Subjects: | Ecosistemas acuáticos, Análisis del agua, Características fisicoquímicas del agua, Geoquímica, Limnología, Artfrosur, |
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Ecosistemas acuáticos Análisis del agua Características fisicoquímicas del agua Geoquímica Limnología Artfrosur Ecosistemas acuáticos Análisis del agua Características fisicoquímicas del agua Geoquímica Limnología Artfrosur |
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Ecosistemas acuáticos Análisis del agua Características fisicoquímicas del agua Geoquímica Limnología Artfrosur Ecosistemas acuáticos Análisis del agua Características fisicoquímicas del agua Geoquímica Limnología Artfrosur Pérez, Liseth Doctora 22565 Bugja, Rita autor/a Lorenschat, Julia autor/a Brenner, Mark autor/a Curtis, Jason H. autor/a Hoelzmann, Philipp autor/a Islebe, Gerald A. Doctor autor/a 2046 Scharf, Burkhard autor/a Schwalb, Antje autor/a Aquatic ecosystems of the Yucatán Peninsula (Mexico), Belize, and Guatemala |
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This study presents limnological and morphological characteristics, physical and chemical properties of waters, and geochemistry of surface sediments for 63 aquatic ecosystems located on the karst Yucatán Peninsula and surrounding areas of Belize and the Guatemalan highlands and eastern lowlands. Our principal goal was to classify the aquatic systems based on their water variables. A principal component analysis (PCA) of the surface water chemistry data showed that a large fraction of the variance (29%) in water chemistry is explained by conductivity and major ion concentrations. The broad conductivity range, from 168 to 55,300 μS cm−1 reflects saline water intrusion affecting coastal aquatic environments, and the steep NW-S precipitation gradient, from ~450 to >3,200 mm year−1. Coastal waterbodies Celestún and Laguna Rosada displayed the highest conductivities. Minimum surface water temperatures of 21.6°C were measured in highland lakes, and warmest temperatures, up to 31.7°C, were recorded in the lowland waterbodies. Most lakes showed thermal stratification during the sampling period, with the exception of some shallow (<10 m) systems. Lakes Chichancanab, Milagros, and Bacalar displayed sulfate-rich waters. Waters of sinkholes had relatively high conductivities (<3,670 μS cm−1) and a broad range of δ18O values (−4.1 to +3.8‰). |
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Texto |
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Ecosistemas acuáticos Análisis del agua Características fisicoquímicas del agua Geoquímica Limnología Artfrosur |
| author |
Pérez, Liseth Doctora 22565 Bugja, Rita autor/a Lorenschat, Julia autor/a Brenner, Mark autor/a Curtis, Jason H. autor/a Hoelzmann, Philipp autor/a Islebe, Gerald A. Doctor autor/a 2046 Scharf, Burkhard autor/a Schwalb, Antje autor/a |
| author_facet |
Pérez, Liseth Doctora 22565 Bugja, Rita autor/a Lorenschat, Julia autor/a Brenner, Mark autor/a Curtis, Jason H. autor/a Hoelzmann, Philipp autor/a Islebe, Gerald A. Doctor autor/a 2046 Scharf, Burkhard autor/a Schwalb, Antje autor/a |
| author_sort |
Pérez, Liseth Doctora 22565 |
| title |
Aquatic ecosystems of the Yucatán Peninsula (Mexico), Belize, and Guatemala |
| title_short |
Aquatic ecosystems of the Yucatán Peninsula (Mexico), Belize, and Guatemala |
| title_full |
Aquatic ecosystems of the Yucatán Peninsula (Mexico), Belize, and Guatemala |
| title_fullStr |
Aquatic ecosystems of the Yucatán Peninsula (Mexico), Belize, and Guatemala |
| title_full_unstemmed |
Aquatic ecosystems of the Yucatán Peninsula (Mexico), Belize, and Guatemala |
| title_sort |
aquatic ecosystems of the yucatán peninsula (mexico), belize, and guatemala |
| work_keys_str_mv |
AT perezlisethdoctora22565 aquaticecosystemsoftheyucatanpeninsulamexicobelizeandguatemala AT bugjaritaautora aquaticecosystemsoftheyucatanpeninsulamexicobelizeandguatemala AT lorenschatjuliaautora aquaticecosystemsoftheyucatanpeninsulamexicobelizeandguatemala AT brennermarkautora aquaticecosystemsoftheyucatanpeninsulamexicobelizeandguatemala AT curtisjasonhautora aquaticecosystemsoftheyucatanpeninsulamexicobelizeandguatemala AT hoelzmannphilippautora aquaticecosystemsoftheyucatanpeninsulamexicobelizeandguatemala AT islebegeraldadoctorautora2046 aquaticecosystemsoftheyucatanpeninsulamexicobelizeandguatemala AT scharfburkhardautora aquaticecosystemsoftheyucatanpeninsulamexicobelizeandguatemala AT schwalbantjeautora aquaticecosystemsoftheyucatanpeninsulamexicobelizeandguatemala |
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1794791054391640064 |
| spelling |
KOHA-OAI-ECOSUR:414142024-03-12T12:41:16ZAquatic ecosystems of the Yucatán Peninsula (Mexico), Belize, and Guatemala Pérez, Liseth Doctora 22565 Bugja, Rita autor/a Lorenschat, Julia autor/a Brenner, Mark autor/a Curtis, Jason H. autor/a Hoelzmann, Philipp autor/a Islebe, Gerald A. Doctor autor/a 2046 Scharf, Burkhard autor/a Schwalb, Antje autor/a textengThis study presents limnological and morphological characteristics, physical and chemical properties of waters, and geochemistry of surface sediments for 63 aquatic ecosystems located on the karst Yucatán Peninsula and surrounding areas of Belize and the Guatemalan highlands and eastern lowlands. Our principal goal was to classify the aquatic systems based on their water variables. A principal component analysis (PCA) of the surface water chemistry data showed that a large fraction of the variance (29%) in water chemistry is explained by conductivity and major ion concentrations. The broad conductivity range, from 168 to 55,300 μS cm−1 reflects saline water intrusion affecting coastal aquatic environments, and the steep NW-S precipitation gradient, from ~450 to >3,200 mm year−1. Coastal waterbodies Celestún and Laguna Rosada displayed the highest conductivities. Minimum surface water temperatures of 21.6°C were measured in highland lakes, and warmest temperatures, up to 31.7°C, were recorded in the lowland waterbodies. Most lakes showed thermal stratification during the sampling period, with the exception of some shallow (<10 m) systems. Lakes Chichancanab, Milagros, and Bacalar displayed sulfate-rich waters. Waters of sinkholes had relatively high conductivities (<3,670 μS cm−1) and a broad range of δ18O values (−4.1 to +3.8‰).Ca, HCO3, and SO4 dominated the waters of the lowland lakes, whereas Na was the dominant cation in highland lakes. Coastal aquatic ecosystems were dominated by Na and Cl. Cluster analysis based on surface water variables classified aquatic environments of the lowlands and highlands into three groups: (1) lowland lakes, ponds, wetlands, and coastal waterbodies (2) highland lakes, and (3) sinkholes and rivers. A broad trophic state gradient was recorded, ranging from the eutrophic Lake Amatitlán and the Timul sinkhole to oligotrophic Laguna Ayarza, with the highest water transparency (11.4 m). We used major and trace elements in surface sediments to assess pollution of waterbodies. Lakes Amatitlán, Atescatempa, El Rosario, Cayucón, Chacan-Lara, La Misteriosa, rivers Subín and Río Dulce, the wetland Jamolún, and the sinkhole Petén de Monos showed evidence of pollution and urban development. Their surface sediments displayed high concentrations of As, Cu, Fe, Ni, Pb, Se, Zn, and Zr, which suggest moderate to strong pollution.This study presents limnological and morphological characteristics, physical and chemical properties of waters, and geochemistry of surface sediments for 63 aquatic ecosystems located on the karst Yucatán Peninsula and surrounding areas of Belize and the Guatemalan highlands and eastern lowlands. Our principal goal was to classify the aquatic systems based on their water variables. A principal component analysis (PCA) of the surface water chemistry data showed that a large fraction of the variance (29%) in water chemistry is explained by conductivity and major ion concentrations. The broad conductivity range, from 168 to 55,300 μS cm−1 reflects saline water intrusion affecting coastal aquatic environments, and the steep NW-S precipitation gradient, from ~450 to >3,200 mm year−1. Coastal waterbodies Celestún and Laguna Rosada displayed the highest conductivities. Minimum surface water temperatures of 21.6°C were measured in highland lakes, and warmest temperatures, up to 31.7°C, were recorded in the lowland waterbodies. Most lakes showed thermal stratification during the sampling period, with the exception of some shallow (<10 m) systems. Lakes Chichancanab, Milagros, and Bacalar displayed sulfate-rich waters. Waters of sinkholes had relatively high conductivities (<3,670 μS cm−1) and a broad range of δ18O values (−4.1 to +3.8‰).Ca, HCO3, and SO4 dominated the waters of the lowland lakes, whereas Na was the dominant cation in highland lakes. Coastal aquatic ecosystems were dominated by Na and Cl. Cluster analysis based on surface water variables classified aquatic environments of the lowlands and highlands into three groups: (1) lowland lakes, ponds, wetlands, and coastal waterbodies (2) highland lakes, and (3) sinkholes and rivers. A broad trophic state gradient was recorded, ranging from the eutrophic Lake Amatitlán and the Timul sinkhole to oligotrophic Laguna Ayarza, with the highest water transparency (11.4 m). We used major and trace elements in surface sediments to assess pollution of waterbodies. Lakes Amatitlán, Atescatempa, El Rosario, Cayucón, Chacan-Lara, La Misteriosa, rivers Subín and Río Dulce, the wetland Jamolún, and the sinkhole Petén de Monos showed evidence of pollution and urban development. Their surface sediments displayed high concentrations of As, Cu, Fe, Ni, Pb, Se, Zn, and Zr, which suggest moderate to strong pollution.Adobe Acrobat profesional 6.0 o superiorEcosistemas acuáticosAnálisis del aguaCaracterísticas fisicoquímicas del aguaGeoquímicaLimnologíaArtfrosurDisponible en líneaHydrobiologiaDisponible para usuarios de ECOSUR con su clave de acceso |