Distribution of phytoplankton and bacteria in the environmental transitional zone of tropical mangrove area
- Distribution of phytoplankton and bacteria in the environmental transitional zone of tropical mangrove area
- Choi, D.H.; Noh, J.H.; Ahn, S.M.; Lee, C.M.; Kim, D.; Kim, K.-T.; Kwon, M.-S.; Park, H.-S.
- KIOST Author(s)
- Choi, Dong Han(최동한); Noh, Jae Hoon(노재훈); Lee, Charity Mijin(이미진); Kim, Dong Seon(김동선); Kim, Kyung Tae(김경태); Park, Heung Sik(박흥식)
- In order to understand phytoplankton and bacterial distribution in tropical coral reef ecosystems in relation to the mangrove community, their biomass and activities were measured in the sea waters of the Chuuk and the Kosrae lagoons located in Micronesia. Chlorophyll a and bacterial abundance showed maximal values in the seawater near the mangrove forests, and then steeply decreased as the distance increased from the mangrove forests, indicating that environmental conditions for these microorganisms changed greatly in lagoon waters. Together with chlorophyll a, abundance of Synechococcus and phototrophic picoeukaryotes and a variety of indicator pigments for dinoflagellates, diatoms, green algae and cryptophytes also showed similar spatial distribution patterns, suggesting that phytoplankton assemblages respond to the environmental gradient by changing community compositions. In addition, primary production and bacterial production were also highest in the bay surrounded by mangrove forest and lowest outside of the lagoon. These results suggest that mangrove waters play an important role in energy production and nutrient cycling in tropical coasts, undoubtedly receiving large inputs of organic matter from shore vegetation such as mangroves. However, the steep decrease of biomass and production of phytoplankton and heterotrophic bacteria within a short distance from the bay to the level of oligotrophic waters indicates that the effect of mangrove waters does not extend far away.
- Ocean and Polar Research, v.35, no.4, pp.415 - 425, 2013
- abundance; bacterium; chlorophyll a; community composition; coral reef; environmental conditions; mangrove; oligotrophic environment; phytoplankton; population distribution; primary production; spatial distribution; transition zone; Caroline Islands; Chuuk; Federated States of Micronesia; Kosrae
- Bacteria; Chuuk; Kosrae; Lagoon; Mangrove; Phytoplankton
- Related Researcher
Marine Eco-Environment,Ocean legal regime/ocean policy/Ocean S&T,International Strategic Network,해양환경생태,해양법/해양정책/해양과학,전략적 국제네트워크
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