caa a22 4500 445893575 CHVBK 20180317145624.0 cr unu---uuuuu 170323e20110201xx s 000 0 eng 10.1007/s10750-010-0552-9 doi (NATIONALLICENCE)springer-10.1007/s10750-010-0552-9 Aquatic ecosystems of the Yucatán Peninsula (Mexico), Belize, and Guatemala [Elektronische Daten] [Liseth Pérez, Rita Bugja, Julia Lorenschat, Mark Brenner, Jason Curtis, Philipp Hoelzmann, Gerald Islebe, Burkhard Scharf, Antje Schwalb] 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 55,300μScm−1 reflects saline water intrusion affecting coastal aquatic environments, and the steep NW-S precipitation gradient, from ~450 to >3,200mmyear−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 (<10m) systems. Lakes Chichancanab, Milagros, and Bacalar displayed sulfate-rich waters. Waters of sinkholes had relatively high conductivities (<3,670μScm−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 (11.4m). 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. Springer Science+Business Media B.V., 2010 Neotropical aquatic ecosystems nationallicence Limnology nationallicence Physical and chemical water variables nationallicence Surface sediment geochemistry nationallicence Yucatán Peninsula nationallicence Guatemala nationallicence Belize nationallicence Pérez Liseth Institut für Umweltgeologie, Technische Universität Braunschweig, Langer Kamp 19c, 38106, Braunschweig, Germany aut Bugja Rita Institut für Umweltgeologie, Technische Universität Braunschweig, Langer Kamp 19c, 38106, Braunschweig, Germany aut Lorenschat Julia Institut für Umweltgeologie, Technische Universität Braunschweig, Langer Kamp 19c, 38106, Braunschweig, Germany aut Brenner Mark Department of Geological Sciences and Land Use and Environmental Change Institute, University of Florida, 32611, Gainesville, FL, USA aut Curtis Jason Department of Geological Sciences and Land Use and Environmental Change Institute, University of Florida, 32611, Gainesville, FL, USA aut Hoelzmann Philipp Institut für Geographische Wissenschaften, Physische Geographie, Freie Universität Berlin, Malteserstrasse 74-100, 12249, Berlin, Germany aut Islebe Gerald Herbario, El Colegio de la Frontera Sur (ECOSUR), Unidad Chetumal Av. del Centenario 424, 77000, Chetumal, Quintana Roo, Mexico aut Scharf Burkhard Institut für Umweltgeologie, Technische Universität Braunschweig, Langer Kamp 19c, 38106, Braunschweig, Germany aut Schwalb Antje Institut für Umweltgeologie, Technische Universität Braunschweig, Langer Kamp 19c, 38106, Braunschweig, Germany aut Hydrobiologia Springer Netherlands 661/1(2011-02-01), 407-433 0018-8158 661:1<407 2011 661 10750 https://doi.org/10.1007/s10750-010-0552-9 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10750-010-0552-9 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Pérez Liseth Institut für Umweltgeologie, Technische Universität Braunschweig, Langer Kamp 19c, 38106, Braunschweig, Germany aut NATIONALLICENCE 700 1- Bugja Rita Institut für Umweltgeologie, Technische Universität Braunschweig, Langer Kamp 19c, 38106, Braunschweig, Germany aut NATIONALLICENCE 700 1- Lorenschat Julia Institut für Umweltgeologie, Technische Universität Braunschweig, Langer Kamp 19c, 38106, Braunschweig, Germany aut NATIONALLICENCE 700 1- Brenner Mark Department of Geological Sciences and Land Use and Environmental Change Institute, University of Florida, 32611, Gainesville, FL, USA aut NATIONALLICENCE 700 1- Curtis Jason Department of Geological Sciences and Land Use and Environmental Change Institute, University of Florida, 32611, Gainesville, FL, USA aut NATIONALLICENCE 700 1- Hoelzmann Philipp Institut für Geographische Wissenschaften, Physische Geographie, Freie Universität Berlin, Malteserstrasse 74-100, 12249, Berlin, Germany aut NATIONALLICENCE 700 1- Islebe Gerald Herbario, El Colegio de la Frontera Sur (ECOSUR), Unidad Chetumal Av. del Centenario 424, 77000, Chetumal, Quintana Roo, Mexico aut NATIONALLICENCE 700 1- Scharf Burkhard Institut für Umweltgeologie, Technische Universität Braunschweig, Langer Kamp 19c, 38106, Braunschweig, Germany aut NATIONALLICENCE 700 1- Schwalb Antje Institut für Umweltgeologie, Technische Universität Braunschweig, Langer Kamp 19c, 38106, Braunschweig, Germany aut NATIONALLICENCE 773 0- Hydrobiologia Springer Netherlands 661/1(2011-02-01), 407-433 0018-8158 661:1<407 2011 661 10750 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer