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Shifts in estuarine zooplankton variability following extreme climate events: a comparison between drought and regular years

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dc.contributor.authorMarques, Sónia Coutrim
dc.contributor.authorPrimo, Ana Lígia
dc.contributor.authorMartinho, Filipe
dc.contributor.authorAzeiteiro, Ulisses
dc.contributor.authorPardal, Miguel
dc.date.accessioned2015-01-22T17:38:28Z
dc.date.available2015-01-22T17:38:28Z
dc.date.issued2014
dc.description.abstractClimate change will likely lead to an increase in temperature and an occurrence of extreme droughts and floods in the 21st century. In particular, coastal and estuarine systems are highly sensitive to climate extremes and changing precipitation patterns, and thus offer invaluable scenarios for the evaluation of climate variability. Zooplankton assemblages and hydroclimate variables were monitored for 8 yr. The main objective was to assess the impact of climate variability, particularly of the 2 most recent drought events in the Mondego estuary (Portugal, southern Europe), which occurred in 2004−2005 and 2007−2008, on the zooplankton population dynamics, with emphasis on how stochastic extrinsic perturbation might influence these populations. Principal component analysis revealed dramatic environmental changes during drought periods, which were reflected in the seasonal and inter-annual patterns in the zooplankton, indicating that hydroclimate forcing is critical in defining zooplankton dynamics. Lower precipitation and higher salinities were the main drivers for the observed patterns, i.e. a major penetration of seawater led to a higher prevalence of marine species. Results also revealed a conspicuous increase in warm water taxa since 2006, which was significantly related to pronounced changes in water temperature. This synchronous variability between water temperature and zooplankton abundance, which had not been evaluated and discriminated in previous studies, suggests the potential impact of warming on zooplankton assemblages. Hence, this study demonstrates the crucial role of zooplankton as valuable indicators of hydrological changes associated with climate factors in estuarine ecosystems.por
dc.identifier.doi10.3354/meps10635
dc.identifier.urihttp://hdl.handle.net/10400.2/3630
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherInter Researchpor
dc.relation.publisherversionhttp://www.int-res.com/abstracts/meps/v499/p65-76/por
dc.subjectMondego estuarypor
dc.subjectTime-series analysispor
dc.subjectClimate variabilitypor
dc.subjectDrought eventspor
dc.subjectZooplankton−climate interactionspor
dc.subjectObservational monitoringpor
dc.titleShifts in estuarine zooplankton variability following extreme climate events: a comparison between drought and regular yearspor
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage76por
oaire.citation.startPage65por
oaire.citation.titleMarine Ecology Progress Seriespor
oaire.citation.volume499por
person.familyNameAzeiteiro
person.givenNameUlisses
person.identifier90893
person.identifier.ciencia-id1C13-105A-FF3A
person.identifier.orcid0000-0002-5252-1700
person.identifier.ridC-5933-2008
person.identifier.scopus-author-id6603109821
rcaap.rightsrestrictedAccesspor
rcaap.typearticlepor
relation.isAuthorOfPublicationdd4a3fac-560c-490a-ab12-223bc59d1531
relation.isAuthorOfPublication.latestForDiscoverydd4a3fac-560c-490a-ab12-223bc59d1531

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