Iron plays a role in nitrate drawdown by phytoplankton in Lake Erie surface waters as observed in lake-wide assessments

UTSePress Research/Manakin Repository

Search UTSePress Research


Advanced Search

Browse

My Account

Show simple item record

dc.contributor.author Havens, S en_US
dc.contributor.author Hassler, Christel en_US
dc.contributor.author North, Rebecca en_US
dc.contributor.author Guildford, S en_US
dc.contributor.author Silsbe, Greg en_US
dc.contributor.author Wilhelm, Sw en_US
dc.contributor.author Twiss, M en_US
dc.contributor.editor en_US
dc.date.accessioned 2014-04-03T01:23:01Z
dc.date.available 2014-04-03T01:23:01Z
dc.date.issued 2012 en_US
dc.identifier 2012003056 en_US
dc.identifier.citation Wilhelm, Sw et al. 2012, 'Iron plays a role in nitrate drawdown by phytoplankton in Lake Erie surface waters as observed in lake-wide assessments', Canadian Journal Of Fisheries And Aquatic Sciences, vol. 69, no. 2, pp. 369-381. en_US
dc.identifier.issn 0706-652X en_US
dc.identifier.other C1UNSUBMIT en_US
dc.identifier.uri http://hdl.handle.net/10453/22833
dc.description.abstract Phytoplankton interactions with iron (Fe) were examined in surface waters of Lake Erie during summer thermal stratification. Lake-wide sampling in June and September 2005 was conducted using a continuous surface water sampler (1 m sampling depth) and in July at 18 hydrographic stations (5 m sampling depth). In situ measurements of photosynthetic efficiency (maximum quantum yield of photosystem II) and phytoplankton community composition were measured using fast repetition rate fluorometry and a phytoplankton pigment-specific fluorometer, respectively, during June and September. High ratios (73%?85%) of intracellular Fe to particulate Fe coincident with increases in chlorophyll a (Chl a) concentrations in the western and central basins in June and July imply that the majority of Fe in these regions was associated with intracellular pools. Correlations between intracellular Fe and Chl a were frequently observed when Heterokontophyta and Pyrrophyta dominated the phytoplankton community. Assimilation of Fe by the phytoplankton strongly influenced its partitioning between the dissolved and particulate phase. Dissolved iron (<0.45 ?m) concentrations were proportional to Chl a concentrations and both dissolved iron and Chl a were inversely proportional to nitrate concentrations in July and September, suggesting that dissolved iron influenced both nitrate drawdown and Chl a concentrations in Lake Erie surface waters in summer en_US
dc.language en_US
dc.publisher Canadian Science Publishing en_US
dc.relation.isbasedon http://dx.doi.org/10.1139/F2011-157 en_US
dc.title Iron plays a role in nitrate drawdown by phytoplankton in Lake Erie surface waters as observed in lake-wide assessments en_US
dc.parent Canadian Journal Of Fisheries And Aquatic Sciences en_US
dc.journal.volume 69 en_US
dc.journal.number 2 en_US
dc.publocation Canada en_US
dc.identifier.startpage 369 en_US
dc.identifier.endpage 381 en_US
dc.cauo.name SCI.Faculty of Science en_US
dc.conference Verified OK en_US
dc.for 070400 en_US
dc.personcode 0000054127 en_US
dc.personcode 107808 en_US
dc.personcode 0000093468 en_US
dc.personcode 0000054198 en_US
dc.personcode 0000093469 en_US
dc.personcode 0000032668 en_US
dc.personcode 0000054126 en_US
dc.percentage 100 en_US
dc.classification.name Fisheries Sciences en_US
dc.classification.type FOR-08 en_US
dc.edition en_US
dc.custom en_US
dc.date.activity en_US
dc.location.activity en_US
dc.description.keywords NA en_US


Files in this item

This item appears in the following Collection(s)

Show simple item record