EurekaMag
+ Most Popular
Cunninghamia lanceolata plantations in China
Mammalian lairs in paleo ecological studies and palynology
Studies on technological possibilities in utilization of anhydrous milk fat for production of recombined butter-like products
Should right-sided fibroelastomas be operated upon?
Large esophageal lipoma
Apoptosis in the mammalian thymus during normal histogenesis and under various in vitro and in vivo experimental conditions
Poissons characoides nouveaux ou non signales de l'Ilha do Bananal, Bresil
Desensitizing efficacy of Colgate Sensitive Maximum Strength and Fresh Mint Sensodyne dentifrices
Administration of fluid by subcutaneous infusion: revival of a forgotten method
Tundra mosquito control - an impossible dream?
Schizophrenia for primary care providers: how to contribute to the care of a vulnerable patient population
Geochemical pattern analysis; method of describing the Southeastern limestone regional aquifer system
Incidence of low birth weights in a hospital of Mexico City
Tabanidae
Graded management intensity of grassland systems for enhancing floristic diversity
Microbiology and biochemistry of cheese and fermented milk
The ember tetra: a new pygmy characid tetra from the Rio das Mortes, Brazil, Hyphessobrycon amandae sp. n. (Pisces, Characoidei)
Risk factors of contrast-induced nephropathy in patients after coronary artery intervention
Renovation of onsite domestic wastewater in a poorly drained soil
Observations of the propagation velocity and formation mechanism of burst fractures caused by gunshot
Systolic blood pressure in a population of infants in the first year of life: the Brompton study
Haematological studies in rats fed with metanil yellow
Studies on pasteurellosis. I. A new species of Pasteurella encountered in chronic fowl cholera
Dormancy breaking and germination of Acacia salicina Lindl. seeds
therapy of lupus nephritis. a two-year prospective study

Seasonal variation in respiratory and photosynthetic parameters in three mosses from the Maritime Antarctic


Seasonal variation in respiratory and photosynthetic parameters in three mosses from the Maritime Antarctic



Annals of Botany 78(6): 719-728



ISSN/ISBN: 0305-7364

DOI: 10.1006/anbo.1996.0182

Carbon fixation under controlled conditions was measured in three mosses from the maritime Antarctic using an infra-red gas analysis system. Gas exchange parameters were determined during each season in 1993 and 1994 using the Arrhenius equation and a hyperbolic tangent function applied to respiration and photosynthesis, respectively. Environmental data was collected in 1994 for comparison. All seasonal variations were greater in Brachythecium than in the species from less hydric habitats. Respiration rates were highest in summer and lowest in winter at all temperatures in Brachythecium, but there was little change in Chorisodontium or Andreaea. There was some seasonal variation in the initial slope (K-p) of the photosynthesis-irradiance curve in all species, although the environmental data suggested that this was of little ecological importance. In all species seasonal changes in the maximum rates of photosynthesis (GP-max, NP-max) were observed, generally with a pattern of summer maxima, although there were some interannual differences. These changes are considered to be the most important in affecting the overall annual productivity of the mosses. There were no seasonal variations in the optimum temperatures for either gross or net photosynthesis, or for the irradiance at the onset of light saturation (I-k). The results have important implications for the use of models to estimate the productivity of the Antarctic flora based upon present or predicted climate data.

Please choose payment method:






(PDF emailed within 0-6 h: $19.90)

Accession: 009385584

Download citation: RISBibTeXText

Related references

Predicted patterns of photosynthetic production in maritime antarctic mosses. Annals of Botany 45(6): 601-620, 1980

Interspecific variation in respiratory and photosynthetic parameters in Antarctic bryophytes. New Phytologist 137(2): 231-240,., 1997

Interspecific variation in respiratory and photosynthetic parameters in Antarctic bryophytes. References 137(2): 231-240, 1997

Interspecific Variation in Respiratory and Photosynthetic Parameters in Antarctic Bryophytes. New Phytologist 137(2): 231-240, 1997

Photosynthetic responses of selected Antarctic plants to solar radiation in the southern maritime Antarctic. Polar Research 18(2): 229-235, 1999

Water relations of maritime antarctic mosses. International Botanical Congress Abstracts 17: 347, 1987

Modelling reproductive effort in sub- and maritime antarctic mosses. Oecologia (Berlin) 100(1-2): 45-53, 1994

Modelling reproductive effort in sub-and maritime Antarctic mosses. Oecologia 100(1-2): 45-53, 1994

Growth form and water relations of mosses in the maritime antarctic. British Antarctic Survey Bulletin: 21, 1971

An experimental study of growth in relation to morphology and shoot water content in maritime Antarctic mosses. New Phytologist 133(2): 363-373, 1996

Seasonal, diurnal and vertical variation in photosynthetic parameters in Phyllostachys humilis bamboo plants. Photosynthesis Research 120(3): 331-346, 2014

Spatial and seasonal variations of Co 2 flux and photosynthetic and respiratory parameters of larch forests in East Asia. Soil Science and Plant Nutrition 61(1): 61-75, 2015

Changes in chlorophyll content throughout the year in selected species of mosses on King George Island, South Shetland Islands, maritime Antarctic. Polish Polar Research 20(3): 291-299, 1999

Seasonal growth and photosynthetic performance of the Antarctic macroalga Desmarestia menziesii (Phaeophyceae) cultivated under fluctuating Antarctic daylengths. Botanica Acta 110(1): 25-31, 1997

Photosynthetic activity of lichens in natural habitats in the maritime antarctic. Peveling, E (Ed ) Bibliotheca Lichenologica, Band 25 Progress and Problems in Lichenology in The Eighties; (Bibliotheca Lichenologica, Vol 25 Progress and Problems in Lichenology in The Eighties); International Symposium, Muenster, West Germany, March 16-21, 1986 Xv+497p J CrAmerican in Der Gebrueder Borntraeger Verlagsbuchhandlung: Berlin, West Germany Illus Maps Paper 297-312, 1987