Spatial and Temporal Patterns of Areal and Volumetric Phytoplankton Productivity of Lake Texoma

Phytoplankton productivity of Lake Texoma was measured for one year from August 1999 to August 2000 for four stations, using the oxygen change method and laboratory incubation. Mean values of the photosynthetic parameters, PBmax and alphaB ranged from 4.86 to 46.39 mg O2.mg Chl-1.hr-1 for PBmax and 20.06 to 98.96 mg O2.mg Chl-1.E-1.m2 for alphaB. These values were in the range to be expected for a highly turbid, temperate reservoir. Estimated gross annual areal productivity ranged from 594 g C.m2.yr-1 (P.Q. = 1.2), at a station in the Washita River Zone to 753 g C.m2.yr-1 at a station in the Red River Zone, of the reservoir. Gross annual areal productivity at Station 17, in the Main Lake Zone, was 708 g C.m2.yr-1. Gross areal and volumetric productivity showed distinct seasonal variation with Photosynthetically Available Radiation (PAR) and temperature. Trophic status estimated on a station-by-station basis, using net productivity values derived from gross productivity and respiration estimates, was mesotrophic for all the stations, though one station approached eutrophy. Net productivity values ranged from 0.74 to 0.91 g C. m-2.d-1. An algal bioassay conducted at two stations in August 2000, revealed that phosphorus was most likely the nutrient limiting photosynthesis at both these stations, although the more turbid riverine station was primarily light-limited.

Grantor dc:publisher

University of North Texas

Year dc:date

2001

Author dc:creator

• Baugher, Tessy

Contributors dc:contributor

• Doyle, Robert D.
• Dickson, Kenneth L.
• Oppong, Joseph R.

• Freshwater phytoplankton -- Texoma, Lake (Okla. and Tex.)
• Freshwater productivity -- Texoma, Lake (Okla. and Tex.)
• spatial and temporal patterns
• areal and volumetric
• primary productivity
• phytoplankton productivity
• Lake Texoma

Statement dc:rights

• Public
• Copyright
• Baugher, Tessy
• Copyright is held by the author, unless otherwise noted. All rights reserved.

Language dc:language

English

Identifier

oclc: 51137776
untcat: b2453394
https://digital.library.unt.edu/ark:/67531/metadc2915/
ark: ark:/67531/metadc2915

OAI identifier oai:identifier

info:ark/67531/metadc2915