Community metabolism in a tropical lagoon

Carbon cycling and autotrophic ecosystem induced by a natural nutrient pulse

Wei Chun Hsieh, Chung Chi Chen, Fuh Kwo Shiah, Jia Jang Hung, Kuo Ping Chiang, Pei Jie Meng, Kuo Shuh Fan

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

This study is designated to examine the biological activity role of carbon cycling in a tropical lagoon, especially after a natural nutrient pulse. The study took place several days after precipitation. Both physical and chemical hydrographs indicated that significant amounts of dissolved inorganic nutrients had either entered the inner lagoon through runoff drainage or regenerated from the bottom sediments of the inner lagoon. Although the variables (chlorophyll a, bacterial biomass and production, as well as dissolved and particulate organic carbon) had orders of variation, linear relationships were significant between variables. This could have been associated with high phytoplankton growth enhanced by enriched nutrients and its sequential responses. This study considered both phytoplankton and bacterial communities that are the most important components of organic carbon consumption; they accounted for more than 87% of the organic carbon consumption in this ecosystem. A large ratio of primary production to community respiration with a mean of 1.33 suggested that this lagoon was autotrophic during the study period. It also indicated that there was a carbon sink in this ecosystem, and the residual carbon was either exported into the coastal sea or preserved in lagoon sediments resulting in the hypoxic condition of the bottom water. Faster water turnover rate was suggested to improve this low oxygen condition.

Original languageEnglish
Pages (from-to)776-782
Number of pages7
JournalEnvironmental Engineering Science
Volume29
Issue number8
DOIs
Publication statusPublished - 2012 Aug 1

Fingerprint

Organic carbon
Metabolism
Ecosystems
Nutrients
lagoon
Carbon
Phytoplankton
metabolism
nutrient
ecosystem
carbon
Sediments
Water
Chlorophyll
Bioactivity
Runoff
Drainage
organic carbon
phytoplankton
Biomass

Keywords

  • bacterial biomass and production
  • community respiration
  • dissolved inorganic nutrients
  • particulate and dissolved organic carbon
  • primary production

ASJC Scopus subject areas

  • Pollution
  • Waste Management and Disposal
  • Environmental Chemistry

Cite this

Community metabolism in a tropical lagoon : Carbon cycling and autotrophic ecosystem induced by a natural nutrient pulse. / Hsieh, Wei Chun; Chen, Chung Chi; Shiah, Fuh Kwo; Hung, Jia Jang; Chiang, Kuo Ping; Meng, Pei Jie; Fan, Kuo Shuh.

In: Environmental Engineering Science, Vol. 29, No. 8, 01.08.2012, p. 776-782.

Research output: Contribution to journalArticle

Hsieh, Wei Chun ; Chen, Chung Chi ; Shiah, Fuh Kwo ; Hung, Jia Jang ; Chiang, Kuo Ping ; Meng, Pei Jie ; Fan, Kuo Shuh. / Community metabolism in a tropical lagoon : Carbon cycling and autotrophic ecosystem induced by a natural nutrient pulse. In: Environmental Engineering Science. 2012 ; Vol. 29, No. 8. pp. 776-782.
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