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Title: Enhancing effect of marine oligotrophy on environmental concentrations of particle-reactive trace elements

Abstract

A biogeochemical model has been previously developed that explains the inverse and nonlinear relationship between Po-210 concentration in zooplankton and their biomass, under oligotrophic conditions in French Polynesia. In this study the model structure was reviewed to determine a set of biogeochemical behaviors of Po-210, proposed to be critical to its environmental enhancement under oligotrophy: this set was then used to identify 25 other elements with comparable behaviors to Po-210. Field investigation in the Timor Sea showed that four of these a priori identified elements, viz. Cd, Co, Pb, and Mn as well as Cr and Ni, showed elevated water concentrations with reduced particle removal rates in the euphotic zone, results that are consistent with those previously obtained for Po-210 and the proposed explanatory model. These findings point to the enhanced susceptibility to contamination with particle-reactive elements of oligotrophic marine systems, whose degree and geographic extent may be enhanced by projected increases in sea surface temperatures from global warming.

Authors:
;
Publication Date:
Research Org.:
ANSTO, Menai (AU)
OSTI Identifier:
20080457
Resource Type:
Journal Article
Journal Name:
Environmental Science and Technology
Additional Journal Information:
Journal Volume: 34; Journal Issue: 10; Other Information: PBD: 15 May 2000; Journal ID: ISSN 0013-936X
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; 63 RADIATION, THERMAL, AND OTHER ENVIRONMENTAL POLLUTANT EFFECTS ON LIVING ORGANISMS AND BIOLOGICAL MATERIALS; WATER POLLUTION; SEAWATER; BIOGEOCHEMISTRY; POLONIUM 210; CADMIUM; COBALT; LEAD; MANGANESE; CHROMIUM; NICKEL; AMBIENT TEMPERATURE; GREENHOUSE EFFECT; ENVIRONMENTAL IMPACTS

Citation Formats

Jeffree, R.A., and Szymczak, R. Enhancing effect of marine oligotrophy on environmental concentrations of particle-reactive trace elements. United States: N. p., 2000. Web. doi:10.1021/es990679a.
Jeffree, R.A., & Szymczak, R. Enhancing effect of marine oligotrophy on environmental concentrations of particle-reactive trace elements. United States. doi:10.1021/es990679a.
Jeffree, R.A., and Szymczak, R. Mon . "Enhancing effect of marine oligotrophy on environmental concentrations of particle-reactive trace elements". United States. doi:10.1021/es990679a.
@article{osti_20080457,
title = {Enhancing effect of marine oligotrophy on environmental concentrations of particle-reactive trace elements},
author = {Jeffree, R.A. and Szymczak, R.},
abstractNote = {A biogeochemical model has been previously developed that explains the inverse and nonlinear relationship between Po-210 concentration in zooplankton and their biomass, under oligotrophic conditions in French Polynesia. In this study the model structure was reviewed to determine a set of biogeochemical behaviors of Po-210, proposed to be critical to its environmental enhancement under oligotrophy: this set was then used to identify 25 other elements with comparable behaviors to Po-210. Field investigation in the Timor Sea showed that four of these a priori identified elements, viz. Cd, Co, Pb, and Mn as well as Cr and Ni, showed elevated water concentrations with reduced particle removal rates in the euphotic zone, results that are consistent with those previously obtained for Po-210 and the proposed explanatory model. These findings point to the enhanced susceptibility to contamination with particle-reactive elements of oligotrophic marine systems, whose degree and geographic extent may be enhanced by projected increases in sea surface temperatures from global warming.},
doi = {10.1021/es990679a},
journal = {Environmental Science and Technology},
issn = {0013-936X},
number = 10,
volume = 34,
place = {United States},
year = {2000},
month = {5}
}