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dc.contributor.authorChennu, Arjun
dc.contributor.authorFärber, Paul
dc.contributor.authorVolkenborn, Nils
dc.contributor.authorAlnajjar, Mohammad Ahmad
dc.contributor.authorJanssen, Felix
dc.contributor.authorde Beer, Dirk
dc.contributor.authorPolerecky, Lubos
dc.date.accessioned2015-05-26T08:06:20Z
dc.date.available2015-05-26T08:06:20Z
dc.date.issued2013-10-03
dc.identifier.citationHyperspectral imaging of the microscale distribution and dynamics of microphytobenthos in intertidal sediments 2013, 11 (10):511 Limnology and Oceanography: Methods
dc.identifier.issn15415856
dc.identifier.doi10.4319/lom.2013.11.511
dc.identifier.urihttp://hdl.handle.net/10754/555800
dc.description.abstractWe describe a novel, field-deployable hyperspectral imaging system, called Hypersub, that allows noninvasive in situ mapping of the microphytobenthos (MPB) biomass distribution with a high spatial (sub-millimeter) and temporal (minutes) resolution over areas of 1 × 1 m. The biomass is derived from a log-transformed and near-infrared corrected reflectance hyperspectral index, which exhibits a linear relationship (R2 > 0.97) with the chlorophyll a (Chl a) concentration in the euphotic zone of the sediment and depends on the sediment grain size. Deployments of the system revealed that due to factors such as sediment topography, bioturbation, and grazing, the distribution of MPB in intertidal sediments is remarkably heterogeneous, with Chl a concentrations varying laterally by up to 400% of the average value over a distance of 1 cm. Furthermore, due to tidal cycling and diel light variability, MPB concentrations in the top 1 mm of sediments are very dynamic, changing by 40–80% over a few hours due to vertical migration. We argue that the high-resolution hyperspectral imaging method overcomes the inadequate resolution of traditional methods based on sedimentary Chl a extraction, and thus helps improve our understanding of the processes that control benthic primary production in coastal sediments.
dc.publisherWiley
dc.relation.urlhttp://doi.wiley.com/10.4319/lom.2013.11.511
dc.rightsArchived with thanks to Limnology and Oceanography: Methods
dc.titleHyperspectral imaging of the microscale distribution and dynamics of microphytobenthos in intertidal sediments
dc.typeArticle
dc.contributor.departmentRed Sea Research Center (RSRC)
dc.identifier.journalLimnology and Oceanography: Methods
dc.eprint.versionPublisher's Version/PDF
dc.contributor.institutionMax Planck Institute for Marine Microbiology, Celsiusstr. 1, Bremen 28359, Germany
dc.contributor.institutionDept. of Biological Sciences, University of South Carolina, Columbia SC 29208, USA
dc.contributor.institutionIFREMER, Laboratory of Benthic Ecology, Technopole Brest BP70, Plouzane, France
dc.contributor.institutionAlfred Wegener Institute for Polar and Marine Research, Am Handelshafen 12, 27570 Bremerhaven, Germany
dc.contributor.institutionDepartment of Earth Sciences, Utrecht University, Budapestlaan 4, 3584 CD Utrecht, The Netherlands
kaust.personAlnajjar, Mohammad Ahmad
refterms.dateFOA2018-06-14T06:39:10Z
dc.date.published-online2013-10-03
dc.date.published-print2013-10


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