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Título del libro: Lake Alchichica Limnology: The Uniqueness Of A Tropical Maar Lake
Título del capítulo: Protozooplankton

Autores UNAM:
MIROSLAV MACEK; GLORIA VILACLARA FATJO; ALFONSO LUGO VAZQUEZ;
Autores externos:

Idioma:

Año de publicación:
2022
Palabras clave:

Anaerobic hypolimnion; Ciliates; Feeding; Mixotrophic; Nanoflagellates; Symbiosis


Resumen:

The protozoan assemblage of Lake Alchichica is composed of euryhaline species, which reflects the hyposaline nature of the lake. In this, microaerophilic and anaerobic species are biomass-dominating components. They occupy resource-rich niches during the prolonged period of stratification. The relevance of protozoa in the microbial food webs has been documented in Lake Alchichica through long-term monitoring. The ciliate feeding activity was proven to be important for primary production by impacting picocyanobacteria biomass. The investigations led to detailed studies of the upper hypolimnion since 2016, which revealed that the stratification of ciliates is species-specific and particularly pronounced deep below the layer of dissolved oxygen exhaustion. Lake Alchichica has become the only hyposaline, warm-monomictic lake in the tropics in which long-term and detailed studies of microaerophilic and anaerobic populations of ciliates take place. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2022.


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