Contrasting behaviour of cadmium and zinc in a soil-plant-arthropod system

This source preferred by Iain Green and Anita Diaz

Authors: Green, I.D., Jeffries, C., Diaz, A. and Tibbett, M.

http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6V74-4J3WG8D-3&_user=1682380&_coverDate=08%2F31%2F2006&_rdoc=1&_fmt=&_orig=search&_sort=d&view=c&_acct=C000011378&_version=1&_urlVersion=0&_userid=1682380&md5=b0ca93c39686dc670049e965f3799418

Journal: Chemosphere

Volume: 64

Pages: 1115-1121

ISSN: 0045-6535

DOI: 10.1016/j.chemosphere.2005.11.074

This study investigates the transfer of Cd and Zn from a soil amended with sewage sludge at rates up to 100 t ha−1 through a multi-trophic system consisting of barley, the aphid Sitobion avenae and the larvae of the lacewing Chrysoperla carnae. Results show marked differences in the transfer of the two metals. Cadmium was freely accumulated in barley roots, but accumulation in the shoot was restricted to a concentration of around 0.22 mg kg−1 (dry weight). This limited the transfer of Cd to higher trophic levels and resulted in no significant accumulation of Cd in S. avenae or in C. carnae. Zinc transfer in the system was largely unrestricted, resulting in significant accumulation in roots and shoots, in S. avenae and in C. carnae. Cadmium biomagnification occurred in lacewing pupae, with concentrations up to 3.6 times greater than in aphids. S. avenae biomagnified Zn by a factor of ca. 2.5 at low sludge amendment rates, but biomagnification decreased to a factor of 1.4 at the highest amendment rate. Biomagnification of Zn did not occur in C. carnae, but concentrations were up to 3.5 time higher than in soil. Results are discussed in light of the mechanisms regulating transfer of the two metals in the system.

This data was imported from PubMed:

Authors: Green, I.D., Jeffries, C., Diaz, A. and Tibbett, M.

Journal: Chemosphere

Volume: 64

Issue: 7

Pages: 1115-1121

ISSN: 0045-6535

DOI: 10.1016/j.chemosphere.2005.11.074

This study investigates the transfer of Cd and Zn from a soil amended with sewage sludge at rates up to 100 t ha(-1) through a multi-trophic system consisting of barley, the aphid Sitobion avenae and the larvae of the lacewing Chrysoperla carnae. Results show marked differences in the transfer of the two metals. Cadmium was freely accumulated in barley roots, but accumulation in the shoot was restricted to a concentration of around 0.22 mg kg(-1) (dry weight). This limited the transfer of Cd to higher trophic levels and resulted in no significant accumulation of Cd in S. avenae or in C. carnae. Zinc transfer in the system was largely unrestricted, resulting in significant accumulation in roots and shoots, in S. avenae and in C. carnae. Cadmium biomagnification occurred in lacewing pupae, with concentrations up to 3.6 times greater than in aphids. S. avenae biomagnified Zn by a factor of ca. 2.5 at low sludge amendment rates, but biomagnification decreased to a factor of 1.4 at the highest amendment rate. Biomagnification of Zn did not occur in C. carnae, but concentrations were up to 3.5 time higher than in soil. Results are discussed in light of the mechanisms regulating transfer of the two metals in the system.

This data was imported from Scopus:

Authors: Green, I.D., Jeffries, C., Diaz, A. and Tibbett, M.

Journal: Chemosphere

Volume: 64

Issue: 7

Pages: 1115-1121

ISSN: 0045-6535

DOI: 10.1016/j.chemosphere.2005.11.074

This study investigates the transfer of Cd and Zn from a soil amended with sewage sludge at rates up to 100 t ha -1 through a multi-trophic system consisting of barley, the aphid Sitobion avenae and the larvae of the lacewing Chrysoperla carnae. Results show marked differences in the transfer of the two metals. Cadmium was freely accumulated in barley roots, but accumulation in the shoot was restricted to a concentration of around 0.22 mg kg -1 (dry weight). This limited the transfer of Cd to higher trophic levels and resulted in no significant accumulation of Cd in S. avenae or in C. carnae. Zinc transfer in the system was largely unrestricted, resulting in significant accumulation in roots and shoots, in S. avenae and in C. carnae. Cadmium biomagnification occurred in lacewing pupae, with concentrations up to 3.6 times greater than in aphids. S. avenae biomagnified Zn by a factor of ca. 2.5 at low sludge amendment rates, but biomagnification decreased to a factor of 1.4 at the highest amendment rate. Biomagnification of Zn did not occur in C. carnae, but concentrations were up to 3.5 time higher than in soil. Results are discussed in light of the mechanisms regulating transfer of the two metals in the system. © 2005 Elsevier Ltd. All rights reserved.

This data was imported from Web of Science (Lite):

Authors: Green, I.D., Jeffries, C., Diaz, A. and Tibbett, M.

Journal: CHEMOSPHERE

Volume: 64

Issue: 7

Pages: 1115-1121

ISSN: 0045-6535

DOI: 10.1016/j.chemosphere.2005.11.074

This data was imported from Europe PubMed Central:

Authors: Green, I.D., Jeffries, C., Diaz, A. and Tibbett, M.

Journal: Chemosphere

Volume: 64

Issue: 7

Pages: 1115-1121

eISSN: 1879-1298

ISSN: 0045-6535

This study investigates the transfer of Cd and Zn from a soil amended with sewage sludge at rates up to 100 t ha(-1) through a multi-trophic system consisting of barley, the aphid Sitobion avenae and the larvae of the lacewing Chrysoperla carnae. Results show marked differences in the transfer of the two metals. Cadmium was freely accumulated in barley roots, but accumulation in the shoot was restricted to a concentration of around 0.22 mg kg(-1) (dry weight). This limited the transfer of Cd to higher trophic levels and resulted in no significant accumulation of Cd in S. avenae or in C. carnae. Zinc transfer in the system was largely unrestricted, resulting in significant accumulation in roots and shoots, in S. avenae and in C. carnae. Cadmium biomagnification occurred in lacewing pupae, with concentrations up to 3.6 times greater than in aphids. S. avenae biomagnified Zn by a factor of ca. 2.5 at low sludge amendment rates, but biomagnification decreased to a factor of 1.4 at the highest amendment rate. Biomagnification of Zn did not occur in C. carnae, but concentrations were up to 3.5 time higher than in soil. Results are discussed in light of the mechanisms regulating transfer of the two metals in the system.

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