Environmental changes associated with a Florida power plant

Roessler, M.A.

doi:10.1016/0025-326x(71)90196-2

Cited by 19 publications

(3 citation statements)

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“…The disappearance of red and brown algae is another well-documented effect of raised temperature (Roessler, 1971;Rex, 1978;Devinny, 1980;von Braun, 1980;Wilde & Tilly, 1981;Boberg et al, 1986). We have shown this effect too, again as a response both to seasonal changes in temperature and to artificial heating.…”

Section: Red and Brown Algaesupporting

confidence: 67%

Effects of cooling water discharge on the structure and dynamics of epilithic algal communities in the northern Baltic

Snoeijs

Prentice

1989

Hydrobiologia

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The Forsmark Biotest Basin is a shallow coastal ecosystem that receives brackish cooling-water discharge from a nuclear power plant. The effects of the discharge on epilithic algal communities were investigated by analysing samples taken every third week throughout one year at 11 sites differentially affected by temperature and/or flow rate enhancement. Community variation was summarized in a canonical correspondence analysis (CCA) of species abundances as a function of site and date. The temperature increase favoured blue-green algae at the expense of red and brown algae. Blue-green algae were however abundant in summer in stagnant water, whether heated or not, and some red and brown algae became abundant in winter in heated sites with flowing water. Green algae and diatoms increased in biomass in the heated sites, but not in relative cover-abundance. The absence of ice and snow cover at sites with heated and/or flowing water caused autumn species to persist into winter, because of the higher light intensity (compared with natural conditions) and the absence of the mechanical abrasion by ice. The thermal discharge lowered species diversity (Shannon-Weaver index) both in summer and winter at sites with flowing water, but not at sites with quiescent or stagnant water. CCA showed alternate periods of stability and rapid change within the seasonal cycle. Individual species were placed according to their optimum; red and brown algae in winter/spring, green algae in spring/summer, blue-green algae in summer, and diatoms at various times. Exceptions to this pattern were species endo-or epiphytic on species of a different group. Analysis of the effects of temperature, flow rate and ice cover on the seasonal pattern of particular species showed that different species respond in individualistic ways to different combinations of these environmental variables. Introductionprevent an ice cover from forming in areas where this would normally occur. The elimination of ice Power stations that use cooling water to discharge and snow cover makes more light available during waste thermal energy modify the aquatic environwinter, and removes the usual mechanical abradment in their discharge area by increasing water ing effect of the ice. Each of these environmental temperature and flow rate. The faster flow can changes has the potential to affect the composialso increase nutrient supply, and the combition, structure and dynamics of aquatic econation of increased temperature and flow rate can systems.

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Section: Red and Brown Algaesupporting

confidence: 67%

Effects of cooling water discharge on the structure and dynamics of epilithic algal communities in the northern Baltic

Snoeijs

Prentice

1989

Hydrobiologia

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“…In 1970, Florida Power and Light Company constructed two 760,000-KWe nuclear-power generators at Turkey Point, Biscayne Bay, Florida, to supplement two 432,000-KWe fossil-fuel-burning generators that had been operating since 1968. The effects of the thermal effluent from the Turkey Point power-plant on the biota of south Biscayne Bay have been previously summarized by Roessler (1971), Thorhaug (1974aThorhaug ( , 19746, 1976,and Thorhaug et al (1974). In general, significant changes in the benthic communities were related to the higher temperature levels of the effluents, the absolute temperature being more important than the relative temperature above the ambient, in terms of thermal stress.…”

Section: Introductionmentioning

confidence: 99%

Biological Effects of Power-plant Thermal Effluents in Card Sound, Florida

Thorhaug

Roessler²,

Bach

et al. 1979

Envir. Conserv.

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Few studies have been reported of the effects of power-plant discharges on tropical and semi-tropical marine environments where plants and animals in non-stressed conditions live close to their upper lethal thermal limits. This paper describes a multidisciplinary three-years' study made in Card Sound, Florida, before, during, and after, thermal effluents were released from a power-plant. Biomass, growth, and production, of Thalassia and macroalgae, were estimated. Animals were collected by trawl, drop-net, suction dredge, in artifical habitats, and on mesh-panels. Except in an area of 2–3 ha adjacent to the canal mouth, little damage to the benthic community was observed. This was very different from the effect of the first canal emanating from the same power-plant at Turkey Point, where a large area had been affected by heated effluents.

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“…Infauna in seagrass sediments for this area have been described in the context of the development and early operation of the Florida Power and Light Turkey Point power plant (Roessler 1971;McLaughlin et al 1983). This study evaluated infaunal communities and sediment structure on multiple seagrass shoals: Cutter Bank, Arsenicker Bank, East Featherbed Bank, and Biscayne Channel.…”

Section: Study Systemmentioning

confidence: 99%

Ecosystem structure in disturbed and restored subtropical seagrass meadows

Bourque¹

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Environmental changes associated with a Florida power plant

Cited by 19 publications

References 0 publications

Effects of cooling water discharge on the structure and dynamics of epilithic algal communities in the northern Baltic

Effects of cooling water discharge on the structure and dynamics of epilithic algal communities in the northern Baltic

Biological Effects of Power-plant Thermal Effluents in Card Sound, Florida

Ecosystem structure in disturbed and restored subtropical seagrass meadows

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