Influence of invasive Acer negundo leaf litter on benthic microbial abundance and activity in the littoral zone of a temperate river in Lithuania
Riparian forests are known as important source of allochthonous organic matter entering to water ecosystems via fallen leaves. However, leaf litter, depending on their quality, may create different conditions for benthic microorganisms functioning in littoral zone of water bodies. In order to evalua...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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EDP Sciences
2017-01-01
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| Series: | Knowledge and Management of Aquatic Ecosystems |
| Subjects: | |
| Online Access: | https://doi.org/10.1051/kmae/2017015 |
| _version_ | 1811227510605611008 |
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| author | Krevš Alina Kučinskiene Alė |
| author_facet | Krevš Alina Kučinskiene Alė |
| author_sort | Krevš Alina |
| collection | DOAJ |
| description | Riparian forests are known as important source of allochthonous organic matter entering to water ecosystems via fallen leaves. However, leaf litter, depending on their quality, may create different conditions for benthic microorganisms functioning in littoral zone of water bodies. In order to evaluate the impact of riparian invasive Acer negundo on littoral water zone of the River Neris (Lithuania), we performed physicochemical and microbiological investigations in bottom sediments of three different sites of the river. One sampling site was close by riparian A. negundo, another close by native Alnus glutinosa location and a third zone was near the shore without riparian vegetation. Content of nutrients in the littoral sediments differed between invasive and native trees leaf litter accumulation sites, while not always significantly. The highest microbial densities as well as benthic community respiratory activity (expressed as the rate of organic carbon mineralization) occurred in A. negundo leaves accumulation site. In sediments of this site, the most intensive anaerobic terminal organic carbon mineralization process − sulfate reduction and the highest concentration of hydrogen sulfide were also observed. Differences in the intensity of mineralization processes between sites suggest that the replacement of the riparian native species such as dominant A. glutinosa by invasive A. negundo with higher biodegradability leaves may induce local changes in organic matter processing in the littoral zone of the river. The increase of littoral bioproductivity in the accumulation zone of A. negundo leaf litter can occur due to the inflow of available organic matter and its intensive mineralization. |
| first_indexed | 2024-04-12T09:43:31Z |
| format | Article |
| id | doaj.art-b8b80b4212e449af886c7e4414254c91 |
| institution | Directory Open Access Journal |
| issn | 1961-9502 |
| language | English |
| last_indexed | 2024-04-12T09:43:31Z |
| publishDate | 2017-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | Knowledge and Management of Aquatic Ecosystems |
| spelling | doaj.art-b8b80b4212e449af886c7e4414254c912022-12-22T03:38:01ZengEDP SciencesKnowledge and Management of Aquatic Ecosystems1961-95022017-01-0104182610.1051/kmae/2017015kmae170002Influence of invasive Acer negundo leaf litter on benthic microbial abundance and activity in the littoral zone of a temperate river in LithuaniaKrevš AlinaKučinskiene AlėRiparian forests are known as important source of allochthonous organic matter entering to water ecosystems via fallen leaves. However, leaf litter, depending on their quality, may create different conditions for benthic microorganisms functioning in littoral zone of water bodies. In order to evaluate the impact of riparian invasive Acer negundo on littoral water zone of the River Neris (Lithuania), we performed physicochemical and microbiological investigations in bottom sediments of three different sites of the river. One sampling site was close by riparian A. negundo, another close by native Alnus glutinosa location and a third zone was near the shore without riparian vegetation. Content of nutrients in the littoral sediments differed between invasive and native trees leaf litter accumulation sites, while not always significantly. The highest microbial densities as well as benthic community respiratory activity (expressed as the rate of organic carbon mineralization) occurred in A. negundo leaves accumulation site. In sediments of this site, the most intensive anaerobic terminal organic carbon mineralization process − sulfate reduction and the highest concentration of hydrogen sulfide were also observed. Differences in the intensity of mineralization processes between sites suggest that the replacement of the riparian native species such as dominant A. glutinosa by invasive A. negundo with higher biodegradability leaves may induce local changes in organic matter processing in the littoral zone of the river. The increase of littoral bioproductivity in the accumulation zone of A. negundo leaf litter can occur due to the inflow of available organic matter and its intensive mineralization.https://doi.org/10.1051/kmae/2017015leaf litterbenthic microorganismsriver |
| spellingShingle | Krevš Alina Kučinskiene Alė Influence of invasive Acer negundo leaf litter on benthic microbial abundance and activity in the littoral zone of a temperate river in Lithuania Knowledge and Management of Aquatic Ecosystems leaf litter benthic microorganisms river |
| title | Influence of invasive Acer negundo leaf litter on benthic microbial abundance and activity in the littoral zone of a temperate river in Lithuania |
| title_full | Influence of invasive Acer negundo leaf litter on benthic microbial abundance and activity in the littoral zone of a temperate river in Lithuania |
| title_fullStr | Influence of invasive Acer negundo leaf litter on benthic microbial abundance and activity in the littoral zone of a temperate river in Lithuania |
| title_full_unstemmed | Influence of invasive Acer negundo leaf litter on benthic microbial abundance and activity in the littoral zone of a temperate river in Lithuania |
| title_short | Influence of invasive Acer negundo leaf litter on benthic microbial abundance and activity in the littoral zone of a temperate river in Lithuania |
| title_sort | influence of invasive acer negundo leaf litter on benthic microbial abundance and activity in the littoral zone of a temperate river in lithuania |
| topic | leaf litter benthic microorganisms river |
| url | https://doi.org/10.1051/kmae/2017015 |
| work_keys_str_mv | AT krevsalina influenceofinvasiveacernegundoleaflitteronbenthicmicrobialabundanceandactivityinthelittoralzoneofatemperateriverinlithuania AT kucinskieneale influenceofinvasiveacernegundoleaflitteronbenthicmicrobialabundanceandactivityinthelittoralzoneofatemperateriverinlithuania |