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Article: Human-induced marine ecological degradation: micropaleontological perspectives

TitleHuman-induced marine ecological degradation: micropaleontological perspectives
Authors
KeywordsBiology
Issue Date2012
PublisherJohn Wiley & Sons Ltd.. The Journal's web site is located at http://onlinelibrary.wiley.com/journal/10.1002/(ISSN)2045-7758
Citation
Ecology and Evolution, 2012, v. 2 n. 12, p. 3242–3268 How to Cite?
AbstractWe analyzed published downcore microfossil records from 150 studies and reinterpreted them from an ecological degradation perspective to address the following critical but still imperfectly answered questions: (1) How is the timing of human-induced degradation of marine ecosystems different among regions? (2) What are the dominant causes of human-induced marine ecological degradation? (3) How can we better document natural variability and thereby avoid the problem of shifting baselines of comparison as degradation progresses over time? The results indicated that: (1) ecological degradation in marine systems began significantly earlier in Europe and North America ( approximately 1800s) compared with Asia (post-1900) due to earlier industrialization in European and North American countries, (2) ecological degradation accelerated globally in the late 20th century due to post-World War II economic growth, (3) recovery from the degraded state in late 20th century following various restoration efforts and environmental regulations occurred only in limited localities. Although complex in detail, typical signs of ecological degradation were diversity decline, dramatic changes in total abundance, decrease in benthic and/or sensitive species, and increase in planktic, resistant, toxic, and/or introduced species. The predominant cause of degradation detected in these microfossil records was nutrient enrichment and the resulting symptoms of eutrophication, including hypoxia. Other causes also played considerable roles in some areas, including severe metal pollution around mining sites, water acidification by acidic wastewater, and salinity changes from construction of causeways, dikes, and channels, deforestation, and land clearance. Microfossils enable reconstruction of the ecological history of the past 10(2)-10(3) years or even more, and, in conjunction with statistical modeling approaches using independent proxy records of climate and human-induced environmental changes, future research will enable workers to better address Shifting Baseline Syndrome and separate anthropogenic impacts from background natural variability.
Persistent Identifierhttp://hdl.handle.net/10722/181966
ISSN
2015 Impact Factor: 2.537
2015 SCImago Journal Rankings: 1.690
PubMed Central ID
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorYasuhara, M-
dc.contributor.authorHunt, G-
dc.contributor.authorBreitburg, D-
dc.contributor.authorTsujimoto, A-
dc.contributor.authorKatsuki, K-
dc.date.accessioned2013-04-16T03:00:07Z-
dc.date.available2013-04-16T03:00:07Z-
dc.date.issued2012-
dc.identifier.citationEcology and Evolution, 2012, v. 2 n. 12, p. 3242–3268-
dc.identifier.issn2045-7758-
dc.identifier.urihttp://hdl.handle.net/10722/181966-
dc.description.abstractWe analyzed published downcore microfossil records from 150 studies and reinterpreted them from an ecological degradation perspective to address the following critical but still imperfectly answered questions: (1) How is the timing of human-induced degradation of marine ecosystems different among regions? (2) What are the dominant causes of human-induced marine ecological degradation? (3) How can we better document natural variability and thereby avoid the problem of shifting baselines of comparison as degradation progresses over time? The results indicated that: (1) ecological degradation in marine systems began significantly earlier in Europe and North America ( approximately 1800s) compared with Asia (post-1900) due to earlier industrialization in European and North American countries, (2) ecological degradation accelerated globally in the late 20th century due to post-World War II economic growth, (3) recovery from the degraded state in late 20th century following various restoration efforts and environmental regulations occurred only in limited localities. Although complex in detail, typical signs of ecological degradation were diversity decline, dramatic changes in total abundance, decrease in benthic and/or sensitive species, and increase in planktic, resistant, toxic, and/or introduced species. The predominant cause of degradation detected in these microfossil records was nutrient enrichment and the resulting symptoms of eutrophication, including hypoxia. Other causes also played considerable roles in some areas, including severe metal pollution around mining sites, water acidification by acidic wastewater, and salinity changes from construction of causeways, dikes, and channels, deforestation, and land clearance. Microfossils enable reconstruction of the ecological history of the past 10(2)-10(3) years or even more, and, in conjunction with statistical modeling approaches using independent proxy records of climate and human-induced environmental changes, future research will enable workers to better address Shifting Baseline Syndrome and separate anthropogenic impacts from background natural variability.-
dc.languageeng-
dc.publisherJohn Wiley & Sons Ltd.. The Journal's web site is located at http://onlinelibrary.wiley.com/journal/10.1002/(ISSN)2045-7758-
dc.relation.ispartofEcology and Evolution-
dc.rightsEcology and Evolution. Copyright © John Wiley & Sons Ltd..-
dc.rightsAuthors own the copyright-
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.subjectBiology-
dc.titleHuman-induced marine ecological degradation: micropaleontological perspectivesen_US
dc.typeArticleen_US
dc.identifier.emailYasuhara, M: yasuhara@hku.hk-
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1002/ece3.425-
dc.identifier.pmid23301187-
dc.identifier.pmcidPMC3539015-
dc.identifier.hkuros212861-
dc.identifier.volume2-
dc.identifier.issue12-
dc.identifier.spage3242-
dc.identifier.epage3268-
dc.identifier.isiWOS:000312453200026-
dc.publisher.placeUnited Kingdom-
dc.customcontrol.immutablesml 130416-

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