Document Detail

Tracing anthropogenic inputs to production in the Seto Inland Sea, Japan--a stable isotope approach.
MedLine Citation:
PMID:  20594561     Owner:  NLM     Status:  MEDLINE    
The Seto Inland Sea (SIS) receives waste runoff from ∼24% of Japan's total population, yet it is also important in regional fisheries, recreation and commerce. During August 2006 we measured carbon and nitrogen stable isotopes of particulate organic matter (POM) and zooplankton across urban population gradients of the SIS. Results showed a consistent trend of increasing δ(15)N in POM and zooplankton from the western to eastern subsystems of the SIS, corresponding to increasing population load. Principal components analysis of environmental variables indicated high positive loadings of δ(15)N and δ(13)C with high chlorophyll-a and surface water temperatures, and negative loadings of low salinities related to inputs from large rivers and high urban development in the eastern SIS. Anthropogenic nitrogen was therefore readily integrated into the SIS food web from primary production to copepods, which are a critical food source for many commercially important fishes.
Todd W Miller; Koji Omori; Hideki Hamaoka; Jun-ya Shibata; Onishi Hidejiro
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2010-07-01
Journal Detail:
Title:  Marine pollution bulletin     Volume:  60     ISSN:  1879-3363     ISO Abbreviation:  Mar. Pollut. Bull.     Publication Date:  2010 Oct 
Date Detail:
Created Date:  2010-09-29     Completed Date:  2011-01-25     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0260231     Medline TA:  Mar Pollut Bull     Country:  England    
Other Details:
Languages:  eng     Pagination:  1803-9     Citation Subset:  IM    
Copyright Information:
Copyright © 2010 Elsevier Ltd. All rights reserved.
Center for Marine Environmental Studies, Ehime University, 2-5 Bunkyo-cho, Matsuyama, Ehime 790-8577, Japan.
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MeSH Terms
Carbon / chemistry*
Carbon Isotopes / chemistry
Environmental Monitoring / methods*
Human Activities
Nitrogen / chemistry*
Nitrogen Isotopes / chemistry
Waste Disposal, Fluid*
Water Pollutants, Chemical / chemistry*
Water Pollution, Chemical
Reg. No./Substance:
0/Carbon Isotopes; 0/Nitrogen Isotopes; 0/Water Pollutants, Chemical; 7440-44-0/Carbon; 7727-37-9/Nitrogen

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