Early morning photosynthesis of the moss Tortula ruralis following summer dew fall in a Hungarian temperate dry sandy grassland

  title={Early morning photosynthesis of the moss Tortula ruralis following summer dew fall in a Hungarian temperate dry sandy grassland},
  author={Zsolt Csintalan and Zolt{\'a}n de Tak{\'a}cs and Michael C. F. Proctor and Zoltan Kalman Nagy and Zoltan Dr Tuba},
  journal={Plant Ecology},
Air temperature and humidity, moss surface temperature, moss water content, and photosynthetically active radiation were measured through a clear dry night and early morning in July 1998; CO2 gas exchange of the moss was measured by infra-red gas analysis. The measurements showed progressive absorption of water by the moss through much of the night. The moss reached sufficient water content for about 1.5 h of positive net CO2 uptake immediately after dawn. The cumulative net carbon balance on… 

Carbon sequestration of the poikilohydric moss carpet vegetation in semidesert sandy grassland ecosystem

Seasonal change in diurnal CO2 exchange of the desiccation-tolerant ectohydric moss Tortula ruralis was investigated in situ to determine its contribution to CO2 exchange of the carbon balance of the

Photosynthetic response to dynamic changes of light and air humidity in two moss species from the Tibetan Plateau

It is suggested that there are acclimations in dynamic photosynthesis in response to light and humidity, and the acclimation would benefit a high leaf carbon gain in the two alpine moss species in their common habitats.

The influence of the watercontent on the photosynthetic features and carbon-balance of the poikilohydric moss carpet vegetation

Introduction The volume of photosynthetizing biomass of the mosses exceed the biomass of herbaceous species in many ecosystems, e.g. in the arctic, tundra, desert and semi-desert vegetation (Proctor,

Consideration on Suitable Microclimate of Moss Garden Based on Turf Surface Moisture Dynamics of Polytrichum Commune Hedw.

Turf surface moisture (TSM) of Polytrichum commune Hedw.,stretched in traditional moss gardens of Kyoto,would be affected by urban climate.TSM was measured for a total number of 33 days with

Midday dew--an overlooked factor enhancing photosynthetic activity of corticolous epiphytes in a wet tropical rain forest.

Evidence is presented for a novel mechanism of diurnal dew formation on tree stem surfaces until midday that has physiological implications for corticolous epiphytes such as lichens and may be a general feature in forest habitats world-wide.

Ecophysiological analysis of moss-dominated biological soil crusts and their separate components from the Succulent Karoo, South Africa

Moss-dominated soil crusts were first analyzed as moss tufts on soil, then the mosses were removed and the soil was analyzed separately to obtain the physiological response of both soil and individual moss stems, resulting in optimum curves with similar ranges of optimum water content.

Characterization of the fluxes and stores of water within newly formed Sphagnum moss cushions and their environment

Internal water storage and water exchanges that sustain hydration are critical for the physiological function of Sphagnum mosses that have recolonized cutover peatlands characterized by low

Ecophysiological consequences of contrasting microenvironments on the desiccation tolerant moss Tortula ruralis

Findings show that microenvironmental variation results in different patterns of resource acquisition in this HDT moss, and that growth in the open imparts greater desiccation tolerance, and the development of a greater standing engagement of slowly reversing photoprotective mechanisms.

Canopy wetting patterns and the determinants of dry season dewfall in an old growth Douglas-fir canopy

Ecohydrological controls on water distribution and productivity of moss communities in western boreal peatlands, Canada

Different peatland mosses have varying strategies for water storage and capillary rise mechanisms depending on their particular hydrophysical properties and preferred water sources. To understand



Eight days in the life of a desert lichen: water relations and photosynthesis of Teloschistes capensis in the coastal fog zone of the Namib Desert

Water content and CO2 exchange of the fruticose lichen TeIoschistes capensis were followed in the coastal fog zone of the Namib Desert north of Swakopmund, Namibia, resulting in predawn dry weight-related water contents of the thalIi greater than 100%.


Responses of photosynthesis to water content of bryophytes of dry habitats (e.g. Tortula intermedia, Camptothecium lutescens) show an optimum, with photosynthesis declining again at high water contents, while respiration continues to somewhat lower water potentials of which the limits were not determined.

The influence of water on CO2 exchange in the lichen Parmelia praesignis Nyl.

Values of half-maximal rate water contents for respiration were found to increase as temperatures increased and the greatest maximal net photosynthetic rate occurred at higher temperatures as the light intensity increased.

The physiological basis of bryophyte production

Most bryophytes, including species of well-illuminated habitats, function in effect as shade plants, with low chlorophyll a/b ratios, and become light-saturated at relatively low irradiance.

Photosynthetic responses of a moss, Tortula ruralis, ssp. ruralis, and the lichens Cladonia convoluta and C. furcata to water deficit and short periods of desiccation, and their ecophysiological significance: a baseline study at present-day CO2 concentration.

The measurements, in conjunction with published data on the full-turgor water content of similar mosses and lichens, show that the cell-physiological response of photosynthesis to water deficit is not greatly different from that of either normal or DT vascular plants.

Water Status of Green and Blue-green Phycobionts in Lichen Thalli after Hydration by Water Vapor Uptake: Do They Become Turgid?

It is hypothesized that, after humidity hydration, water content is not sufficient for reestablishment of a functioning osmotic cell system in the blue-green phycobiont.

Carbon-dioxide exchange in lichens: determination of transport and carboxylation characteristics

The analysis shows that the local CO2 compensation concentration of the phycobiont in R. maciformis is close to zero, indicating that photorespiratory release of CO2 does not take place in the alga, Trebouxia sp.

Water-content components in bryophytes: analysis of pressure-volume relationships

ing full-turgor water content for physiological work on water-stress responses in bryophytes is emphasized. The water associated with a bryophyte can be divided into (a) apoplast water held in

CO2-Gaswechsel von Moosen nach Wasserdampfaufnahme aus dem Luftraum

Dry mosses are useful objects for studying the relationships between water vapour reactivation, morphological organisation and ecological capability, and are located between the real thallophytes and the cormophytes.