Human and riverine impacts on the dynamics of biogeochemical parameters in Kwangyang Bay, South Korea revealed by time-series data and multivariate statistics

Tae Wook Kim, Dongseon Kim, Seung Ho Baek, Young Ok Kim

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

The successful management of sustainable coastal environments that are beneficial to both humans and marine ecosystems requires knowledge about factors that are harmful to such environments. Here, we investigated seawater nutrient and carbon parameters between 2010 and 2012 in Kwangyang Bay, Korea, a coastal environment that has been exposed to intensive anthropogenic activities. The data were analyzed using cluster and factor analysis. We found that the biogeochemical cycles of nutrients and carbon were determined by river discharge into the bay and biological activity. However, the impacts of these factors varied both spatially and seasonally. During the past 10. years, nutrient loads from the river and industrial complexes to the bay have decreased. The impacts of this decrease are visible in the phosphate concentration, which has fallen to a third of its initial value. We also examined the potential role of atmospheric nitrogen deposition in nitrogen cycling in the study area.

Original languageEnglish
Pages (from-to)304-311
Number of pages8
JournalMarine Pollution Bulletin
Volume90
Issue number1-2
DOIs
Publication statusPublished - 2015 Jan 1

Keywords

  • Atmospheric nitrogen deposition
  • Cluster analysis
  • Factor analysis
  • Kwangyang Bay
  • Nutrient cycles
  • Riverine nutrient transport

ASJC Scopus subject areas

  • Oceanography
  • Aquatic Science
  • Pollution

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