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Fidelity of thermophilic blue-green algae to hot spring habitats

Jackson, J.E. Jr ; Castenholz, R.W

Limnol. Oceanogr.; (United States), 1975-01, Vol.20 (3), p.305-322 [Periódico revisado por pares]

United States: American Society of Limnology and Oceanography

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Título:
Fidelity of thermophilic blue-green algae to hot spring habitats
Autor: Jackson, J.E. Jr ; Castenholz, R.W
Assuntos: 150600 - Geothermal Energy- Environmental Aspects ; 560203 - Thermal Effects- Plants- (-1987) ; ALGAE ; BIOMASS ; Creeks ; CULTURE MEDIA ; Cyanobacteria ; Cyanophyta ; ENERGY SOURCES ; EVERGLADES NATIONAL PARK ; Flasks ; Freshwater ; GEOTHERMAL ENERGY ; GROWTH ; HOT SPRINGS ; National parks ; plant ecology ; PLANT GROWTH ; PLANTS ; PUBLIC LANDS ; RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT ; RENEWABLE ENERGY SOURCES ; River water ; Spring water ; Streams ; TEMPERATURE DEPENDENCE ; THERMAL SPRINGS ; Water temperature ; YELLOWSTONE NATIONAL PARK
É parte de: Limnol. Oceanogr.; (United States), 1975-01, Vol.20 (3), p.305-322
Notas: ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
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Descrição: Inocula of river water and sediment from the Yellowstone Plateau (Wyoming) and the Willamette Valley (Oregon) were incubated in photoautotropic medium at 14, 35, and 45⚬C Many blue-green algal species developed at 35⚬C with inocula from numerous habitats. The 45 ⚬ C temperature promoted the growth of blue-green algae in samples taken downstream from a source of hot spring or possibly heated industrial waters, but not in samples from pristine waters above hot spring discharges. Most of the 45⚬C enrichments samples from pristine waters above hot spring discharges. Most of the 45⚬enrichments also grew when the culture temperature was raised to 50 and$55^\cir C$. The hot spring origins of certain species were determined by their known occurrence in nearby hot springs and by the decrease in cell density with distance downstream from hot spring influents. The dilution with time andfs distance was partially a result of death, since test indicated the lethal effect of light on these cells in cold river water. Nevertheless, hot spring cells were still recoverable from 2-liter water samples 20-30 km from the point of inputand occasionally at distances of over 100 km. Samples from waters of Everglades National Park (which reach 35-40⚬C) also contained several species of blue-greens capable of growth at 45 and 50⚬C. Thus thermophilic blue-green algae that have a growth temperature optimum of over 45⚬C have a high fidelity to hot spring habitats (or artificially heated waters) in temperature or colder climates, but maintenance populations of some species may become established elsewhere in warmer areas.
Editor: United States: American Society of Limnology and Oceanography
Idioma: Inglês

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Fidelity of thermophilic blue-green algae to hot spring habitats

Jackson, J.E. Jr ; Castenholz, R.W

United States: American Society of Limnology and Oceanography

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