Inter-annual ciliate distribution variation within the late stratification oxycline in a monomictic lake, Lake Alchichica (Mexico).
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60077344%3A_____%2F16%3A00459757" target="_blank" >RIV/60077344:_____/16:00459757 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.4081/jlimnol.2016.1440" target="_blank" >http://dx.doi.org/10.4081/jlimnol.2016.1440</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.4081/jlimnol.2016.1440" target="_blank" >10.4081/jlimnol.2016.1440</a>
Alternative languages
Result language
angličtina
Original language name
Inter-annual ciliate distribution variation within the late stratification oxycline in a monomictic lake, Lake Alchichica (Mexico).
Original language description
Deep stratified tropical water bodies pass through prolonged periods of meta-hypolimnetic anoxia, and ciliates might play a very important role in the plankton community budget there. We analyzed changes in the composition and biomass of the ciliate assemblage and other microbial loop components throughout the oxycline just at the end of stratification in a warm-monomictic lake, Lake Alchichica, Mexico (four samplings: 2006-2008, 2010); the results were compared with those obtained from another lake from the region, La Preciosa, sampled in 2010. Bacteria, autotrophic picoplankton (APP) and flagellates were analyzed using epifluorescence microscopy. Ciliates were evaluated either in DAPI stained samples (looking for pigmented organelles and/or ingested phototrophs) or in quantitative protargol stain (QPS) permanent preparations, where they were identified at the genus or species level. The end of the stratification period in Lake Alchichica was characterized by almost uniform heterotrophic picoplankton (HPP) numbers (106 cells mL(-1)) throughout the water column. Meanwhile, APP showed epilimnetic and/or metalimnetic maxima of 10(5) cells mL(-1) followed by an order of magnitude drop in the hypolimnion. A very important peak (10(5) cells mL(-1)) of the autotrophic or mixotrophic flagellate Pyramimonas sp. was observed repeatedly above and within the oxycline of Lake Alchichica. Ciliate biomass maxima were found around the oxycline and in the above-bottom layer. The top of the oxycline was dominated by Euplotes spp. and Spirostomum teres fine-to coarse-filter feeders (feeding upon APP, nanodiatoms and algae). Raptorial haptorids (in particular, Phialina sp.) were the second most important group, generally occupying the layer below euplotids, followed by Holophrya and Prorodon facultative anaerobic prostomes. Sometimes, strictly anaerobic Caenomorpha sp. was found to be important in the anoxic hypolimnion.
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
DA - Hydrology and limnology
OECD FORD branch
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Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of Limnology
ISSN
1129-5767
e-ISSN
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Volume of the periodical
75
Issue of the periodical within the volume
1
Country of publishing house
IT - ITALY
Number of pages
12
Pages from-to
179-190
UT code for WoS article
000375715100018
EID of the result in the Scopus database
2-s2.0-84964995411