Record Details

Efficiency of copper and cupronickel substratum to resist development of diatom biofilms

DRS at CSIR-National Institute of Oceanography

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Title Efficiency of copper and cupronickel substratum to resist development of diatom biofilms
 
Creator Patil, J.S.
Anil, A.C.
 
Subject FOULING AND BORING
FOULING AND BORING
FOULING AND BORING
AQUATIC COMMUNITIES
AQUATIC POLLUTION
AQUATIC ECOLOGY, PRODUCTIVITY
POPULATION STUDIES
 
Description This study on the population dynamics of fouling diatoms from a biofouling rich monsoon influenced tropical bay revealed that irrespective of the season and exposure period, the highest diatom abundance and species were encountered on non-toxic (fiberglass > glass) compared to toxic (copper–Cu and cupro-nickel–Cu-Ni) substrata. Though the diatom recruitment on toxic substrata is noticed within 24 h, the multiplication of the settled diatoms was not significant, even with an increase in the exposure period (days to weeks). The diatoms recorded on toxic substrata are the result of fresh recruitment. Results indicated that the potential of Cu and Cu–Ni panels to resist diatom fouling are the same. The dominance of raphid-pennate diatoms (Navicula, Amphora, Nitzschia and Thalassionema) throughout the year indicated them as ideal candidates for antifouling studies. The negligible contribution of araphid-pennate diatoms (Licmophora and Grammatophora) and the influence of tycho-pelagic/bloom forming diatoms (Fragillariopsis and Skeletonema) on fouling community are the other noteworthy observations. Concern with the adverse impact of Cu pollution on the ecosystem this study recommends the incorporation of Cu alloy (Cu–Ni) in the marine structures to combat biofouling as Cu–Ni has a slower leaching rate of the toxic product such as Cu2O.
 
Date 2015-11-02T09:06:36Z
2015-11-02T09:06:36Z
2015
 
Type Journal Article
 
Identifier International Biodeterioration & Biodegradation, vol.105; 2015; 203-214
no
http://drs.nio.org/drs/handle/2264/4852
 
Language en
 
Relation Int_Biodeterior_Biodegrad_105_203.jpg
 
Rights An edited version of this paper was published by Elsevier. Copyright [2015] Elsevier
 
Publisher Elsevier