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dc.contributor.authorMosisch, TD
dc.contributor.authorBunn, SE
dc.contributor.authorDavies, PM
dc.contributor.authorMarshall, CJ
dc.date.accessioned2019-05-24T02:28:17Z
dc.date.available2019-05-24T02:28:17Z
dc.date.issued1999
dc.identifier.issn0304-3770
dc.identifier.doi10.1016/S0304-3770(99)00014-5
dc.identifier.urihttp://hdl.handle.net/10072/122294
dc.description.abstractWe used artificial substrates in an open pasture stream in south-east Queensland, Australia, to test (a) the relative importance of shade vs. nutrients on periphyton growth, and (b) whether nitrogen or phosphorus (or both) are limiting. Nutrient-diffusing substrates consisting of agar solutions with three nutrient treatments (N, P, N + P) were positioned in three shade treatments (0, 50%, 90%) and replicated at five sites. Periphyton communities sampled from substrates of all treatments after four and seven weeks were dominated by diatoms. Chlorophyll a and ash-free dry mass values of periphyton in both shaded treatments were similar to those in open sites. However, the addition of nitrogen resulted in significantly higher chlorophyll a levels compared with phosphorus-enriched substrates and control substrates. After seven weeks, lowest chlorophyll a values were found on phosphorus-enriched substrates. Nutrient additions did not have any measurable effects on periphyton ash-free dry mass values. Nitrogen rather than shade appears to be the primary factor limiting periphyton growth in this open pasture stream.
dc.description.peerreviewedYes
dc.languageEnglish
dc.publisherElsevier
dc.publisher.placeNetherlands
dc.relation.ispartofpagefrom167
dc.relation.ispartofpageto176
dc.relation.ispartofissue2
dc.relation.ispartofjournalAquatic Botany
dc.relation.ispartofvolume64
dc.subject.fieldofresearchPlant Biology
dc.subject.fieldofresearchEnvironmental Science and Management
dc.subject.fieldofresearchEcology
dc.subject.fieldofresearchcode0607
dc.subject.fieldofresearchcode0502
dc.subject.fieldofresearchcode0602
dc.titleEffects of Shade and Nutrient Manipulation on Periphyton Growth in a Subtropical Stream
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
gro.hasfulltextNo Full Text
gro.griffith.authorBunn, Stuart E.
gro.griffith.authorMosisch, Thorsten D.
gro.griffith.authorMarshall, Chris


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