View in EDS

Role mikrobů při dekompozici v horních tocích řek

Saved in:
Bibliographic Details
Title: Role mikrobů při dekompozici v horních tocích řek
Authors: Kociánová, Petra
Contributors: Kopalová, Kateřina, Tátosová, Jolana
Publisher Information: 2023.
Publication Year: 2023
Subject Terms: 13. Climate action, 15. Life on land, 6. Clean water, mikrobiální komunity, organická hmota, horní toky, global warming, decomposition, headwater streams, organic matter, microbial communities, dekompozice, globální oteplování
Description: The decomposition of organic matter in headwater streams is a key process in stream ecology and an important component of the global carbon cycle. Decomposition rates depend on both abiotic and biotic factors, the former including temperature, discharge, and nutrient chemistry, and the latter including stream community structure and activity, trophic interactions, biodiversity, and productivity. Of the stream community, microbial decomposers play a particularly important role in decomposition by chemically degrading compounds and transferring nutrients and energy to higher trophic levels. These processes are prone to change due to current and future global warming which will affect both decomposer communities and associated decomposition rates. This thesis provides a short overview of the main factors that control stream decomposition rates, including biological factors like microbial activity, abiotic factors such as water temperature and nutrient availability, and how these factors may be altered in the future under a warmer climate. Specifically, I predict that climate change will increase microbial activity and decomposition in headwater streams due to increased water temperatures, changes in surrounding vegetation, and shifts in the hydrological regime due to global warming. .
Document Type: Bachelor thesis
Language: English
Access URL: http://www.nusl.cz/ntk/nusl-528022
Accession Number: edsair.od......2186..e04541c27a64a83631b709180b8534ac
Database: OpenAIRE
Description
Abstract:The decomposition of organic matter in headwater streams is a key process in stream ecology and an important component of the global carbon cycle. Decomposition rates depend on both abiotic and biotic factors, the former including temperature, discharge, and nutrient chemistry, and the latter including stream community structure and activity, trophic interactions, biodiversity, and productivity. Of the stream community, microbial decomposers play a particularly important role in decomposition by chemically degrading compounds and transferring nutrients and energy to higher trophic levels. These processes are prone to change due to current and future global warming which will affect both decomposer communities and associated decomposition rates. This thesis provides a short overview of the main factors that control stream decomposition rates, including biological factors like microbial activity, abiotic factors such as water temperature and nutrient availability, and how these factors may be altered in the future under a warmer climate. Specifically, I predict that climate change will increase microbial activity and decomposition in headwater streams due to increased water temperatures, changes in surrounding vegetation, and shifts in the hydrological regime due to global warming. .