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Phytoplankton production modelling in three marine ecosystems—static versus dynamic approach

dc.contributor.authorMacedo, M. F.
dc.contributor.authorDuarte, Pedro
dc.date.accessioned2007-09-17T13:33:05Zpor
dc.date.accessioned2011-10-06T14:40:35Z
dc.date.available2007-09-17T13:33:05Zpor
dc.date.available2011-10-06T14:40:35Z
dc.date.issued2006por
dc.description.abstractPhytoplankton productivity is usually determined from water samples incubated at a number of irradiance levels during several hours. The resultant productivity-irradiance (P–E) curves are then used to estimate local and/or global phytoplankton production. However, there is growing evidence that these curves, referred as static, underestimate phytoplankton photosynthesis to a great deal, by assuming a stable response to light over the incubation period. One of the drawbacks of static P–E curves is the overestimation of photoinhibition. In this work, three one-dimensional vertically resolved models were developed as simply as possible, to investigate differences between static and dynamic phytoplankton productivity in three marine ecosystems: a turbid estuary, a coastal area and an open ocean ecosystem. The results show that, when photoinhibition development time is considered (dynamic model), the primary production estimates are always higher than when calculated with the static model. The quantitative importance of these differences varies with the type of ecosystem and it appears to be more important in coastal areas and estuaries (from 21 to 72%) than in oceanic waters (10%). Thus, these results suggest that primary production estimates, obtained under the assumption of a static behaviour response to light, may underestimate the real values of global phytoplankton primary production. Calculations suggest that the quantitative importance of this underestimation may be larger than the global missing carbon sink.por
dc.identifier.citationEcological Modelling. 190 (2006), 299-316.por
dc.identifier.urihttp://hdl.handle.net/10284/291por
dc.language.isoengpor
dc.publisherElsevierpor
dc.relation.ispartofseriesEcological Modellingpor
dc.relation.ispartofseries190por
dc.subjectPhytoplankton productionpor
dc.subjectP–E relationshippor
dc.subjectStatic and dynamic modellingpor
dc.subjectPhotoinhibition parameterpor
dc.titlePhytoplankton production modelling in three marine ecosystems—static versus dynamic approachpor
dc.typejournal article
dspace.entity.typePublication
person.familyNameMacedo
person.familyNameDuarte
person.givenNameMaria Filomena
person.givenNamePedro
person.identifier158912
person.identifier.ciencia-idD71B-29B0-FE74
person.identifier.ciencia-idF614-0053-05A5
person.identifier.orcid0000-0003-4366-4192
person.identifier.orcid0000-0001-7461-605X
person.identifier.ridF-1247-2014
person.identifier.scopus-author-id35821442200
person.identifier.scopus-author-id7005201821
rcaap.rightsopenAccesspor
rcaap.typearticlepor
relation.isAuthorOfPublication18d78d0f-5628-496b-a591-2cd462155d32
relation.isAuthorOfPublicationde486bab-75c6-4f98-8ee1-b27b20edbe2d
relation.isAuthorOfPublication.latestForDiscoveryde486bab-75c6-4f98-8ee1-b27b20edbe2d

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