Vis enkel innførsel

dc.contributor.authorEllingsen, Kari Elsa
dc.contributor.authorYoccoz, Nigel Gilles
dc.contributor.authorTveraa, Torkild
dc.contributor.authorHewitt, Judi E.
dc.contributor.authorThrush, Simon F.
dc.date.accessioned2017-11-10T12:26:55Z
dc.date.available2017-11-10T12:26:55Z
dc.date.created2017-11-02T12:21:01Z
dc.date.issued2017
dc.identifier.issn0167-6369
dc.identifier.urihttp://hdl.handle.net/11250/2465552
dc.description.abstractThe importance of long-term environmental monitoring and research for detecting and understanding changes in ecosystems and human impacts on natural systems is widely acknowledged. Over the last decades, a number of critical components for successful long-term monitoring have been identified. One basic component is quality assurance/quality control protocols to ensure consistency and comparability of data. In Norway, the authorities require environmental monitoring of the impacts of the offshore petroleum industry on the Norwegian continental shelf, and in 1996, a large-scale regional environmental monitoring program was established. As a case study, we used a sub-set of data from this monitoring to explore concepts regarding best practices for long-term environmental monitoring. Specifically, we examined data from physical and chemical sediment samples and benthic macroinvertebrate assemblages from 11 stations from six sampling occasions during the period 1996–2011. Despite the established quality assessment and quality control protocols for this monitoring program, we identified several data challenges, such as missing values and outliers, discrepancies in variable and station names, changes in procedures without calibration, and different taxonomic resolution. Furthermore, we show that the use of different laboratories over time makes it difficult to draw conclusions with regard to some of the observed changes. We offer recommendations to facilitate comparison of data over time. We also present a new procedure to handle different taxonomic resolution, so valuable historical data is not discarded. These topics have a broader relevance and application than for our case study. Data comparability. Long-termmonitoring . Macrobenthos . Oil and gas industry . Taxonomic resolutionnb_NO
dc.language.isoengnb_NO
dc.titleLong-term environmental monitoring for assessment of change: measurement inconsistencies over time and potential solutionsnb_NO
dc.typeJournal articlenb_NO
dc.typePeer reviewednb_NO
dc.description.versionacceptedVersionnb_NO
dc.subject.nsiVDP::Zoologiske og botaniske fag: 480nb_NO
dc.subject.nsiVDP::Zoology and botany: 480nb_NO
dc.source.volume189nb_NO
dc.source.journalEnvironmental Monitoring & Assessmentnb_NO
dc.identifier.doi10.1007/s10661-017-6317-4
dc.identifier.cristin1510260
dc.relation.projectMiljødirektoratet: 4013045nb_NO
dc.relation.projectEgen institusjon: Norwegian institute for nature research (NINA)nb_NO
dc.relation.projectMiljødirektoratet: 1204110nb_NO
dc.relation.projectNorsk olje og gass: 20-2013nb_NO
dc.relation.projectNorges forskningsråd: 212135nb_NO
cristin.unitcode7511,4,0,0
cristin.unitnameTromsø
cristin.ispublishedtrue
cristin.fulltextpostprint
cristin.qualitycode1


Tilhørende fil(er)

Thumbnail

Denne innførselen finnes i følgende samling(er)

Vis enkel innførsel