Primary Productivity and Biomass of Periphyton and Phytoplankton in Flooded Freshwater Marshes

dc.contributor.author van der Valk, Arnold
dc.contributor.author Hosseini, Syed
dc.contributor.author van der Valk, A. G.
dc.contributor.department Botany
dc.date 2018-10-10T09:20:52.000
dc.date.accessioned 2020-06-30T00:53:56Z
dc.date.available 2020-06-30T00:53:56Z
dc.date.issued 1989
dc.description.abstract <p>Periphyton and phytoplankton productivities, chlorophyll a, carbon and nitrogen concentrations in experimental marshes flooded 1 m above normal level for 1 year and 2 years were compared to values for unflooded control marshes. Primary productivity was estimated from uptake of 14C~bicarbonate. Periphyton productivity was measured on artificial substrata that had been placed in the marshes. Phytoplankton productivity was estimated using samples of marsh water incubated in GO-ml glass bottles. All productivity measurements were made in the laboratory at 19°C and 15 jLE m-2 sec-1 of PAR, a low level of irradiance compared to field lev. els. Mean phytoplankton primary productivity, chlorophyll a, total suspended carbon, and total suspended nitrogen in control marshes were significantly higher than in flooded marshes. Mean periphytic primary productivity per unit area of artificial substrata was significantly higher in marshes flooded for 1 year than in control marshes; however, there was no significant difference between periphytic primary productivity of marshes flooded for 2 years and control marshes. There were no significant differences between control and flooded marshes in the amounts of periphytic chlorophyll a, particulate carbon, or nitrogen per unit area of artificial substrata. Flooding increased periphytic productivity and two of three measures of biomass, while phytoplankton productivity and biomass were reduced. Because the bulk of the nutrients were sequestered by the periphyton and metaphyton, we hypothesize that the increases in periphytic and metaphyton production associated with flooding were responsible for the decrease in phytoplankton production.</p>
dc.description.comments <p>This proceeding is from Hosseini, S. M. and A. G. van der Valk. 1989. Primary productivity and biomass of periphyton and phytoplankton in flooded freshwater marshes. pp. 303-315. In R. R. Sharitz and J. W. Gibbons (Eds.) <em>Freshwater Wetlands and Wildlife, </em>proceedings of a symposium held at Charleston, South Carolina, March 24-27, 1986. USDOE Office of Scientific and Technical Information, Oak Ridge, TN.</p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/bot_pubs/102/
dc.identifier.articleid 1106
dc.identifier.contextkey 12978907
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath bot_pubs/102
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/11242
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/bot_pubs/102/1989_vanderValk_PrimaryProductivity.pdf|||Fri Jan 14 18:16:04 UTC 2022
dc.subject.disciplines Botany
dc.subject.disciplines Ecology and Evolutionary Biology
dc.subject.disciplines Terrestrial and Aquatic Ecology
dc.title Primary Productivity and Biomass of Periphyton and Phytoplankton in Flooded Freshwater Marshes
dc.type article
dc.type.genre conference
dspace.entity.type Publication
relation.isAuthorOfPublication f74d4ccd-1e5a-4a19-8fc4-e92cbf4d8a40
relation.isOrgUnitOfPublication 9ac828da-ca66-4c1f-9f0d-17de747c541e
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