Differences in Bacterial Growth and Mortality between Seagrass Meadows and Adjacent Unvegetated Areas
A seagrass meadow is one of the most important ecosystems around the world, both economically and ecologically. An important feature of this ecosystem is the presence of large coastal seagrass beds, which dominate the primary production and contribute to the secondary productivity of the ecosystem....
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MDPI AG
2023-10-01
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| Series: | Journal of Marine Science and Engineering |
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| Online Access: | https://www.mdpi.com/2077-1312/11/10/1979 |
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| author | Patrichka Wei-Yi Chen Madeline Olivia Wen-Chen Chou Ruei-Feng Shiu Vladimir Mukhanov An-Yi Tsai |
| author_facet | Patrichka Wei-Yi Chen Madeline Olivia Wen-Chen Chou Ruei-Feng Shiu Vladimir Mukhanov An-Yi Tsai |
| author_sort | Patrichka Wei-Yi Chen |
| collection | DOAJ |
| description | A seagrass meadow is one of the most important ecosystems around the world, both economically and ecologically. An important feature of this ecosystem is the presence of large coastal seagrass beds, which dominate the primary production and contribute to the secondary productivity of the ecosystem. The microbial loop (consuming bacterial biomass by grazers and using seagrass-derived detritus by bacteria) may be an important mechanism for transferring seagrass-derived organic matter to aquatic food chains. The goal of this study is to gain a better understanding of how bacterial growth and mortality (grazing and viral lysis rates) differ in unvegetated meadow habitats and seagrass habitats. According to this study, DOC levels were higher in seagrass habitats (1685 g L<sup>−1</sup>) than in unvegetated water surroundings. The instantaneous growth rate of bacteria in seagrass habitats was 2.05 d<sup>−1</sup>, higher than that of unvegetated water. In a seagrass environment during the summer, we have found that viral lysis and grazing both result in similar mortality rates of bacteria during the summer season. It has been found, however, that bacterial production is controlled by the availability of resources (bottom-up control) in adjacent unvegetated waters, and is thus cycled internally within the bacteria–virus–DOC loop within those waters. |
| first_indexed | 2024-03-10T21:08:48Z |
| format | Article |
| id | doaj.art-5c81503088e344e696e5b4b283fbe4ac |
| institution | Directory Open Access Journal |
| issn | 2077-1312 |
| language | English |
| last_indexed | 2024-03-10T21:08:48Z |
| publishDate | 2023-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Marine Science and Engineering |
| spelling | doaj.art-5c81503088e344e696e5b4b283fbe4ac2023-11-19T16:59:24ZengMDPI AGJournal of Marine Science and Engineering2077-13122023-10-011110197910.3390/jmse11101979Differences in Bacterial Growth and Mortality between Seagrass Meadows and Adjacent Unvegetated AreasPatrichka Wei-Yi Chen0Madeline Olivia1Wen-Chen Chou2Ruei-Feng Shiu3Vladimir Mukhanov4An-Yi Tsai5Institute of Marine Environment and Ecology, National Taiwan Ocean University, Keelung 202-24, TaiwanInstitute of Marine Environment and Ecology, National Taiwan Ocean University, Keelung 202-24, TaiwanInstitute of Marine Environment and Ecology, National Taiwan Ocean University, Keelung 202-24, TaiwanInstitute of Marine Environment and Ecology, National Taiwan Ocean University, Keelung 202-24, TaiwanA.O. Kovalevsky Institute of Biology of the Southern Seas, Russian Academy of Sciences, 299011 Sevastopol, RussiaInstitute of Marine Environment and Ecology, National Taiwan Ocean University, Keelung 202-24, TaiwanA seagrass meadow is one of the most important ecosystems around the world, both economically and ecologically. An important feature of this ecosystem is the presence of large coastal seagrass beds, which dominate the primary production and contribute to the secondary productivity of the ecosystem. The microbial loop (consuming bacterial biomass by grazers and using seagrass-derived detritus by bacteria) may be an important mechanism for transferring seagrass-derived organic matter to aquatic food chains. The goal of this study is to gain a better understanding of how bacterial growth and mortality (grazing and viral lysis rates) differ in unvegetated meadow habitats and seagrass habitats. According to this study, DOC levels were higher in seagrass habitats (1685 g L<sup>−1</sup>) than in unvegetated water surroundings. The instantaneous growth rate of bacteria in seagrass habitats was 2.05 d<sup>−1</sup>, higher than that of unvegetated water. In a seagrass environment during the summer, we have found that viral lysis and grazing both result in similar mortality rates of bacteria during the summer season. It has been found, however, that bacterial production is controlled by the availability of resources (bottom-up control) in adjacent unvegetated waters, and is thus cycled internally within the bacteria–virus–DOC loop within those waters.https://www.mdpi.com/2077-1312/11/10/1979seagrassmicrobial loopviral lysismortality rates |
| spellingShingle | Patrichka Wei-Yi Chen Madeline Olivia Wen-Chen Chou Ruei-Feng Shiu Vladimir Mukhanov An-Yi Tsai Differences in Bacterial Growth and Mortality between Seagrass Meadows and Adjacent Unvegetated Areas Journal of Marine Science and Engineering seagrass microbial loop viral lysis mortality rates |
| title | Differences in Bacterial Growth and Mortality between Seagrass Meadows and Adjacent Unvegetated Areas |
| title_full | Differences in Bacterial Growth and Mortality between Seagrass Meadows and Adjacent Unvegetated Areas |
| title_fullStr | Differences in Bacterial Growth and Mortality between Seagrass Meadows and Adjacent Unvegetated Areas |
| title_full_unstemmed | Differences in Bacterial Growth and Mortality between Seagrass Meadows and Adjacent Unvegetated Areas |
| title_short | Differences in Bacterial Growth and Mortality between Seagrass Meadows and Adjacent Unvegetated Areas |
| title_sort | differences in bacterial growth and mortality between seagrass meadows and adjacent unvegetated areas |
| topic | seagrass microbial loop viral lysis mortality rates |
| url | https://www.mdpi.com/2077-1312/11/10/1979 |
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