Current Search:  Freshwater plants (x)

View All Items

  • CSV Spreadsheet
(1 - 5 of 5)
Physiological responses of transplants of the freshwater angiosperm Vallisneria americana along a salinity gradient in the Caloosahatchee Estuary (Southwestern Florida)
Title
Physiological responses of transplants of the freshwater angiosperm Vallisneria americana along a salinity gradient in the Caloosahatchee Estuary (Southwestern Florida).
Creator
Kraemer, George P., Chamberlain, Robert H., Doering, Peter H., Steinman, Alan D., Hanisak, M. Dennis
Date Issued
1999
PURL
http://purl.flvc.org/FCLA/DT/3172995
Subject Headings
Eelgrass, Angiosperms, Freshwater plants, Salinity, Estuaries
Format
Document (PDF)
Biomass production by marine and freshwater plants
Title
Biomass production by marine and freshwater plants.
Creator
Ryther, John H., Williams, Lavergne D., Hanisak, M. Dennis, Stenberg, Richard W., DeBusk, T. A.
Date Issued
1979
PURL
http://purl.flvc.org/fau/fd/FA00007325
Subject Headings
Biomass, Gracilaria, Water hyacinth, Hydrilla, Freshwater plants, Marine plants
Format
Document (PDF)
Biomass production by some marine and freshwater plants
Title
Biomass production by some marine and freshwater plants.
Creator
Ryther, John H., Hanisak, M. Dennis, Stenberg, Richard W., DeBusk, T. A.
Date Issued
1978
PURL
http://purl.flvc.org/fau/fd/FA00007132
Subject Headings
Biomass, Marine plants, Freshwater plants, Gracilaria, Water hyacinth, Lemna minor
Format
Document (PDF)
Pigment analysis of benthic and pelagic algae in Lake Okeechobee, Florida
Title
Pigment analysis of benthic and pelagic algae in Lake Okeechobee, Florida.
Creator
Winfree, Nancy, Florida Atlantic University, Baker, Earl W.
Abstract/Description
Water samples from Lake Okeechobee, Florida have been analyzed in order to relate pigment fingerprints to temporal and spatial variations. Chemical taxonomic identification of predominant photoautotrophs was based on pigment profiles evolved from literature reports and analysis of specific cultures. Carotenoids and chlorophylls were analyzed using high performance liquid chromatography (HPLC) and ultra-violet visible spectra obtained with a photo diode array detector (PDA). Pigments were...
Show moreWater samples from Lake Okeechobee, Florida have been analyzed in order to relate pigment fingerprints to temporal and spatial variations. Chemical taxonomic identification of predominant photoautotrophs was based on pigment profiles evolved from literature reports and analysis of specific cultures. Carotenoids and chlorophylls were analyzed using high performance liquid chromatography (HPLC) and ultra-violet visible spectra obtained with a photo diode array detector (PDA). Pigments were identified by coincident matches of retention time and UV/Visible spectral properties. Chemical taxonomic identification was determined by comparison with known photoautotrophic pigment 'fingerprints'. Experimental results show pigment arrays indicative of chromophytes, chlorophytes and cyanophytes as well as photoautotrophic bacteria present in Lake Okeechobee. The lake was also found to be heterogeneous and dynamic in terms of pigment composition. Major pigment groups changed as a function of location in the lake and as a function of season. A greater pigment diversity was found to exist in the benthos due to the presence of degradation products. HPLC-PDA pigment analysis for chemotaxonomic typing of photoautotrophic communities is attainable and can be used as a rapid viable alternative to microscopic examination of plankton and epiphyte samples. Also, taxonomic typing of organic matter and photoautotrophic communities of sediments, including bacterial populations, can be accomplished using this method.
Show less
Date Issued
1996
PURL
http://purl.flvc.org/fcla/dt/15261
Subject Headings
Plant pigments--Analysis, Photosynthetic pigments--Analysis, Freshwater algae, High performance liquid chromatography, Okeechobee, Lake (Fla)
Format
Document (PDF)
effect of canopy shading on relative primary productivity of periphyton in Water Conservation Area 2-A, Everglades
Title
The effect of canopy shading on relative primary productivity of periphyton in Water Conservation Area 2-A, Everglades.
Creator
Brandenburg, Mark Eric., Florida Atlantic University, Marsh, G. Alex
Abstract/Description
Differences in relative primary productivity of periphyton were determined for three light regimes: open slough (control), sawgrass canopy, and cattail canopy. The center of Water Conservation Area 2-A, Everglades was chosen as the study site because it is relatively unaffected by nutrient runoff. Periphyton productivity was determined by the light and dark bottle method, and biomass was recorded as ash-free dry weight. Statistically significant correlations were found between periphyton...
Show moreDifferences in relative primary productivity of periphyton were determined for three light regimes: open slough (control), sawgrass canopy, and cattail canopy. The center of Water Conservation Area 2-A, Everglades was chosen as the study site because it is relatively unaffected by nutrient runoff. Periphyton productivity was determined by the light and dark bottle method, and biomass was recorded as ash-free dry weight. Statistically significant correlations were found between periphyton biomass and water temperature and between organic content and water temperature. Mean photosynthetically active radiation reaching the surface of the water under sawgrass and cattail canopy was 45% $\pm$ 3% and 11% $\pm$ 1% respectively. Relative primary productivity of periphyton was lower under cattail canopy than under sawgrass canopy due to increased shading of cattail. This reduction of periphyton biomass and primary productivity can be considered an indirect effect of nutrient enrichment from the Everglades Agricultural Area.
Show less
Date Issued
1996
PURL
http://purl.flvc.org/fcla/dt/15240
Subject Headings
Freshwater algae--Florida--Everglades, Periphyton--Florida--Everglades, Stream ecology--Florida--Everglades, Primary productivity (Biology)--Florida--Everglades, Plant communities--Florida--Everglades, Everglades (Fla )
Format
Document (PDF)