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Article: Mid-ocean exchange of container vessel ballast water. 2: effects of vessel type in the transport of diatoms and dinoflagellates from Manzanillo, Mexico, to Hong Kong, China

TitleMid-ocean exchange of container vessel ballast water. 2: effects of vessel type in the transport of diatoms and dinoflagellates from Manzanillo, Mexico, to Hong Kong, China
Authors
KeywordsBallast water
Efficiency of open ocean exchange
Non-indigenous species
Harmful species
Diatoms
Issue Date1999
PublisherInter-Research. The Journal's web site is located at http://www.int-res.com/journals/meps/index.html
Citation
Marine Ecology - Progress Series, 1999, v. 176, p. 253-262 How to Cite?
AbstractPlankton samples were collected from 4 container ships which took on ballast water in Manzanillo, Mexico, and discharged it 21 d later in Hong Kong, China. As expected, the lack of light during transport in ballast tanks was inimical to the survival of many autotrophic (phytoplankton) species. After 21 d at sea, few of the dinoflagellate and diatom species taken on in Manzanillo Harbour were alive in the ballast water delivered to Hong Kong. In addition, 5 ships from Manzanillo which reballasted with open ocean water were sampled. To assess the effectiveness of mid-ocean exchange, the mean number of diatoms and dinoflagellates in the coastal ballast water (838 cells l-1) was compared with the number in the open ocean ballast water (436 cells l-1) delivered to Hong Kong. Open ocean exchange of ballast water (reballasting) was 48% effective in reducing diatom and dinoflagellate abundance. When we compared the Manzanillo study with our previous study of ships from Oakland, California, we concluded that the older container ships such as those coming from Manzanillo were not as effective in getting rid of diatom and dinoflagellate species as the newer container ships. This is probably because the reballasting design of the older ships is not as efficient in removing the water and sediments located near the bottom of the ballast tanks. This bottom water is associated with a large number of resting cysts and cells.
Persistent Identifierhttp://hdl.handle.net/10722/57260
ISSN
2015 Impact Factor: 2.361
2015 SCImago Journal Rankings: 1.554
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorDickman, MDen_HK
dc.contributor.authorZhang, FZen_HK
dc.date.accessioned2010-04-12T01:31:06Z-
dc.date.available2010-04-12T01:31:06Z-
dc.date.issued1999en_HK
dc.identifier.citationMarine Ecology - Progress Series, 1999, v. 176, p. 253-262en_HK
dc.identifier.issn0171-8630en_HK
dc.identifier.urihttp://hdl.handle.net/10722/57260-
dc.description.abstractPlankton samples were collected from 4 container ships which took on ballast water in Manzanillo, Mexico, and discharged it 21 d later in Hong Kong, China. As expected, the lack of light during transport in ballast tanks was inimical to the survival of many autotrophic (phytoplankton) species. After 21 d at sea, few of the dinoflagellate and diatom species taken on in Manzanillo Harbour were alive in the ballast water delivered to Hong Kong. In addition, 5 ships from Manzanillo which reballasted with open ocean water were sampled. To assess the effectiveness of mid-ocean exchange, the mean number of diatoms and dinoflagellates in the coastal ballast water (838 cells l-1) was compared with the number in the open ocean ballast water (436 cells l-1) delivered to Hong Kong. Open ocean exchange of ballast water (reballasting) was 48% effective in reducing diatom and dinoflagellate abundance. When we compared the Manzanillo study with our previous study of ships from Oakland, California, we concluded that the older container ships such as those coming from Manzanillo were not as effective in getting rid of diatom and dinoflagellate species as the newer container ships. This is probably because the reballasting design of the older ships is not as efficient in removing the water and sediments located near the bottom of the ballast tanks. This bottom water is associated with a large number of resting cysts and cells.en_HK
dc.languageengen_HK
dc.publisherInter-Research. The Journal's web site is located at http://www.int-res.com/journals/meps/index.htmlen_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.rightsMarine Ecology - Progress Series. Copyright © Inter-Research.en_HK
dc.subjectBallast wateren_HK
dc.subjectEfficiency of open ocean exchangeen_HK
dc.subjectNon-indigenous speciesen_HK
dc.subjectHarmful speciesen_HK
dc.subjectDiatomsen_HK
dc.titleMid-ocean exchange of container vessel ballast water. 2: effects of vessel type in the transport of diatoms and dinoflagellates from Manzanillo, Mexico, to Hong Kong, Chinaen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0171-8630&volume=176&spage=253&epage=262&date=1999&atitle=Mid-ocean+exchange+of+container+vessel+ballast+water.+2:+effects+of+vessel+type+in+the+transport+of+diatoms+and+dinoflagellates+from+Manzanillo,+Mexico,+to+Hong+Kong,+Chinaen_HK
dc.identifier.emailDickman, MD: dickman@hkusua.hku.hken_HK
dc.description.naturepublished_or_final_versionen_HK
dc.identifier.doi10.3354/meps176253en_HK
dc.identifier.hkuros43699-
dc.identifier.isiWOS:000078918200022-

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