Testate amoebae (Amoebozoa: Arcellinidae) as indicators of dissolved oxygen concentration and water depth in lakes of the Lacandón Forest, southern Mexico
| Autor: | Charqueño Celis, Norma Fernanda, Garibay, Martin, Sigala, Itzel, Brenner, Mark, Echeverria Galindo, Paula, Lozano García, Socorro, Massaferro, Julieta, Pérez, Liseth |
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| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
LACANDÓN FOREST
NEOTROPICS Testate amoebae -- neotropics -- bioindicators -- dissolved oxygen -- water depth -- Lacandón Forest Article BIOINDICATORS purl.org/becyt/ford/1 [https] purl.org/becyt/ford/1.5 [https] neotropics water depth Veröffentlichung der TU Braunschweig lcsh:Physical geography lcsh:Environmental sciences ddc:5 Lacandón Forest lcsh:GE1-350 WATER DEPTH lcsh:Geography. Anthropology. Recreation TESTATE AMOEBAE DISSOLVED OXYGEN lcsh:G dissolved oxygen bioindicators ddc:55 Publikationsfonds der TU Braunschweig Testate amoebae lcsh:GB3-5030 |
| Zdroj: | Journal of Limnology (2019) Journal of Limnology, Vol 79 No 1 (2020)--1129-5767--1129-5767 CONICET Digital (CONICET) Consejo Nacional de Investigaciones Científicas y Técnicas instacron:CONICET |
| Popis: | The ecology of aquatic protists such as testate amoebae is poorly known worldwide, but is almost completely unknown in lakes of the northern Neotropics. To address this knowledge gap, we analyzed testate amoebae (Amoebozoa: Arcellinidae) in lakes of the Lacandón Forest, one of the most biodiverse parts of southern México. We set out to evaluate the diversity of testate amoebae communities and assess whether testate amoebae taxa are reliable indicators of environmental variables dissolved oxygen and water depth. We collected 17 surface sediment samples from a range of water depths in six lakes across the Naha-Metzabok Biosphere Reserve, northeastern Chiapas state. We identified 15 testate amoebae taxa distributed across seven genera. Eleven were identified to species level and four to strain (infra-subspecific level), and taxa were distributed unevenly among samples. Distribution of taxa in samples was related to dissolved oxygen (DO) concentration in the water measured near the sediment surface. Arcella discoides and Centropyxis aculeata strain “aculeata” were the most tolerant of low oxygen concentrations, whereas the other taxa require higher DO levels. The influence of oxygen was also seen at the assemblage level. Sites with low DO concentrations had Shannon Diversity Index (SDI) values |
| Databáze: | OpenAIRE |
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