A low-cost method of measuring the in situ primary productivity of periphyton communities of lentic waters.

0569048 - BC 2023 RIV US eng J - Journal Article
Čapková, Kateřina - Bešta, Tomáš - Mareš, Jan - Čapek, P. - Řeháková, Klára
A low-cost method of measuring the in situ primary productivity of periphyton communities of lentic waters.
Jove-Journal of Visualized Experiments. Roč. 190, Dec (2022), č. článku e64078. ISSN 1940-087X
R&D Projects: GA ČR(CZ) GA19-05791S
Grant - others:AV ČR(CZ) StrategieAV21/21
Program: StrategieAV
Institutional support: RVO:60077344
Keywords : productivity * phosphorus * oxygen
OECD category: Marine biology, freshwater biology, limnology
Impact factor: 1.2, year: 2022
Method of publishing: Limited access
https://doi.org/10.3791/64078

Measuring the in situ primary productivity of periphyton during the growing season gradient can elucidate the quantitative effect of environmental drivers (mainly phosphorus concentration and light intensity) and species composition on primary productivity. Primary productivity is mainly driven by light intensity, temperature, availability of nutrients, and distribution of the ionic species of the carbonate system in the respective depths of the euphotic zone. It is a complex system that is very difficult to simulate in the laboratory. This cheap, transportable, and easy-to-build floating barge allows measuring the primary productivity accurately-directly under the actual natural conditions. The methodology is based on measuring the primary productivity in real time using noninvasive oxygen sensors integrated into tightly sealed glass jars, enabling online oxygen flux monitoring and providing new insights into metabolic activities. Detailed seasonal in situ measurements of gross primary productivity of microbial mats (or other benthic organisms) can improve current knowledge of the processes controlling primary productivity dynamics in lentic waters.
Permanent Link: https://hdl.handle.net/11104/0340352