Physiological responses of five seagrass species to trace metals

Prange, J. A. and Dennison, W. C. (2000) Physiological responses of five seagrass species to trace metals. Marine Pollution Bulletin, 41 7-12: 327-336. doi:10.1016/S0025-326X(00)00126-0


Author Prange, J. A.
Dennison, W. C.
Title Physiological responses of five seagrass species to trace metals
Journal name Marine Pollution Bulletin   Check publisher's open access policy
ISSN 0025-326X
Publication date 2000
Sub-type Article (original research)
DOI 10.1016/S0025-326X(00)00126-0
Volume 41
Issue 7-12
Start page 327
End page 336
Total pages 10
Place of publication London
Publisher Elsevier
Collection year 2000
Language eng
Subject C1
270702 Marine and Estuarine Ecology (incl. Marine Ichthyology)
630303 Aquaculture
0405 Oceanography
0602 Ecology
Abstract Trace metal run-off associated with urban and industrial development poses potential threats to seagrasses in adjacent coastal ecosystems, Seagrass from the largest urban (Moreton Bay) and industrial (Port Curtis) coastal regions in Queensland, Australia were assessed for metal concentrations of iron (Fe), aluminium (Al), zinc (Zn), chromium (Cr) and copper (Cu), Trace metal concentrations in seagrass (Zostera capricorni) leaf and root-rhizome tissue had the following overall trend: [Fe] > [Al] > [Zn] > [Cr] > [Cu]. Rainfall events and anthropogenic disturbances appeared to influence metal concentrations in seagrasses with the exception of Al, which does not appear to bioaccumulate, In laboratory experiments, five seagrass species (Halophila ovalis, H. spinulosa, Halodule uninervis, Z. capricorni, Cymodocea serrulata) were incubated with iron (1 mg Fe l(-1)) and copper (1 mg Cu l(-1)) and responses assessed by changes in PSII photochemical efficiency (Fv/Fm), free amino acid content and leaf/root-rhizome metal accumulation. Iron addition experiments only affected Halophila spp, while copper additions affected other seagrass species as well, Trace metal contamination of seagrasses could have ramifications for associated trophic assemblages through metal transfer and seagrass loss, The use of photosystem II photochemical efficiency as well as amino acid concentrations and composition proved to be useful sublethal indicators of trace metal toxicity in seagrasses. (C) 2000 Published by Elsevier Science Ltd.
Keyword Environmental Sciences
Marine & Freshwater Biology
Queensland
Seagrass
Trace Metals
Psii Photochemical Efficiency
Zostera-marina L
Heavy-metals
Zinc
Limfjord
Cadmium
Denmark
Copper
Toxicity
Plants
Bay
Q-Index Code C1

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Biological Sciences Publications
 
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Created: Tue, 10 Jun 2008, 11:06:42 EST