Photosynthesis and respiration of feather mosses fumigated at different hydration levels with SO2

1983 ◽  
Vol 61 (5) ◽  
pp. 1456-1461 ◽  
Author(s):  
William E. Winner ◽  
J. Derek Bewley
Keyword(s):  
Recovery Period ◽  
Pleurozium Schreberi ◽  
Hylocomium Splendens ◽  
Moss Species ◽  
Feather Moss ◽  
Feather Mosses ◽  
Rate Of Photosynthesis ◽  
Free Environment ◽  
Photosynthesis And Respiration

Fumigation with SO2 of the three feather mosses Pleurozium schreberi, Hylocomium splendens, and Ptilium crista-castrensis results in an immediate decline in their rate of photosynthesis but has no effect upon respiration. Pleurozium schreberi is the most sensitive of the three species, even though they all take up the same amount of SO2. Thus, the feather moss species appear to have similar degrees of SO2 avoidance (uptake) but dissimilar degrees of SO2 tolerance. With increasing desiccation, respiration declines equally in all three species, but photosynthesis declines most rapidly for P. schreberi. The immediate effects of SO2 upon photosynthesis of water-limited and of fully hydrated feather mosses are similar, but after a 24-h recovery period in an SO2-free environment photosynthesis remains impaired only in those mosses fumigated in the fully hydrated state. This probably is related to the larger amounts of SO2 absorbed by hydrated mosses.

scholarly journals BRYOPHYTA AS ТЕST-ОBJECTS OF BRYOGEOCHEMICAL INDICATION OF ATMOSPHERIC FALLOUTS OF HEAVY METALS AND RADIONUCLIDES IN THE ENVIRONMENT OF EUROPE. АNALYTICAL REVIEW

2021 ◽  
Vol 5 (33) ◽  
pp. 55-70
Author(s):  
O. Orlov ◽  
Keyword(s):  
Heavy Metals ◽  
Steppe Zone ◽  
Exchange Capacity ◽  
Pleurozium Schreberi ◽  
Forest Steppe ◽  
Taxonomic Structure ◽  
Hylocomium Splendens ◽  
Moss Species ◽  
Hypnum Cupressiforme ◽  
Test Objects

The review presents the analysis of publications dedicated to problems of using of Bryobionta representatives for bryogeochemical indication and biomonitoring of heavy metals and radionuclides in the environment. Taxonomic structure of Bryobionta is briefly observed, three divisions of Bryobionta are elucidated – Anthocerotophyta, Marchantiophyta and Bryophyta. It is concluded that the most suitable moss species for biomonitoring of heavy metals and radionuclides are representatives from division Bryophyta, such as Hylocomium splendens, Pleurozium schreberi, Hypnum cupressiforme, Scleropodium purum. The mosses have been successfully used in biomonitoring of atmospheric fallout of heavy metals in the environment in Europe for 25 years. A special system of monitoring on their basis is applied in 28 countries of the continent. For the most important moss species used as test-objects of biomonitoring, significant width of their geographic distribution is shown as well as distribution on different substrates of growth (epigeious, epiphytic, epilytic). The main biological peculiarities of mosses which allow to use them for purposes of biomonitoring of heavy metals and radionuclides have been analyzed, i.e. absence of roots, that permits them to derive the main part of nutrients (and pollutants) directly from aerial fallouts – dry (dust) and wet (rain, snow), and high cation exchange capacity of their cell membranes. The most important anatomical and morphological features of three moss groups (endohydritic, ectohydritic, mixohydritic) are briefly reported, and a conclusion about the best suitability of ectohydritic moss species for bryogeochemical indication and biomonitoring of pollutants is made. Results of numerous biomonitoring studies conducted with using of widely distributed moss species in Europe in nature and anthropogenic biogeocenoses are demonstrated. Criteria to mosses as test-objects of bryogeochemical indication and biomonitoring are briefly reported. Physiological adaptations of mosses to stress emerging due to intake of significant concentrations of heavy metals to their phytomass are generalized. Requirements to sampling of moss cover for purposes of bryogeochemical indication and biomonitoring of pollutants are reported. Perspective moss species as test-objects of environmental pollution by heavy metals and radionuclides are proposed for different natural zones of Ukraine: for Polissya zone – Hylocomium splendens and Pleurozium schreberi, for Forest-Steppe zone – Hypnum cupressiforme, for Steppe zone – Tortula muralis and Bryum argenteum.

scholarly journals Novel Technique of Active Biomonitoring Introduced in the Czech Republic: Bioaccumulation of Atmospheric Trace Metals in two moss species / Nová Metoda Aktivního Biomonitoringu Zavedená V České Republice: Bioakumulace Stopových Kovů V Atmosféře U Dvou Druhů Mechů

2011 ◽  
Vol 57 (3) ◽  
pp. 30-36
Author(s):  
Oldřich Motyka ◽  
Barbora Macečková ◽  
Jana Seidlerová ◽  
Blanka Krejčí
Keyword(s):  
Trace Elements ◽  
Czech Republic ◽  
Trace Metals ◽  
Pleurozium Schreberi ◽  
Hylocomium Splendens ◽  
Active Biomonitoring ◽  
Moss Species ◽  
The Czech Republic ◽  
Novel Technique ◽  
Concentration Levels

Abstract A biomonitoring technique never before used in the Czech Republic was used to test its validity and applicability in the region of Ostrava that is eminently affected by industry. Transplants of two moss species Hylocomium splendens and Pleurozium schreberi were exposed to atmospheric pollution using the technique of an “irrigated moss bag” placed at a height of both 1 m and 2 m above ground. The samples were then analysed for concentration levels of trace elements Al, As, Cd, Cr, Cu, Fe, Hg, Pb, V and Zn. The patterns of bioaccumulation in general show that Hylocomium splendens is more suitable for monitoring purposes and that 2 m height above ground of transplants should be preferred.

Identification of two genera of N2-fixing cyanobacteria growing on three feather moss species in boreal forests of Quebec, Canada

2006 ◽  
Vol 84 (6) ◽  
pp. 1025-1029 ◽  
Author(s):  
Daniel Houle ◽  
Simon Bilodeau Gauthier ◽  
Serge Paquet ◽  
Dolors Planas ◽  
Annabelle Warren
Keyword(s):  
Boreal Forest ◽  
Boreal Forests ◽  
Pleurozium Schreberi ◽  
Large Area ◽  
Moss Species ◽  
Feather Moss ◽  
Canadian Boreal Forest ◽  
First Time

The recent discovery that N2 fixation rates by the feather moss carpet of boreal Scandinavian forests increases with stand maturity has put into question the paradigm that N2 fixation is negligible in mature boreal forest. The N2 fixation was attributed to a previously unknown association between Nostoc sp., a N2-fixing cyanobacteium and Pleurozium schreberi (Brid.) Mitt., a feather moss that is abundant worldwide in the boreal forest. Here we report for the first time that this association also exists in the Canadian boreal forest. We discovered, however, that Nostoc was found growing not only on Pleurozium but also on two other moss species ( Hylocomnium splendens (Hedw.) Br. Eur. and Ptillium crista-castrensis (Hedw.) De Not.). In addition, the N2-fixing cyanobacterium Stigonema sp. was observed on the three moss species mentioned above, indicating the existence of six different associations. At least one of the six associations was found at 9 of 13 sites that are representative of a large area of the Quebec boreal forest. These findings suggest possibilities for further research, aimed at measuring the unaccounted for N2-fixing potential of the feather moss carpet in Canadian boreal forests.

Carbon balance in relation to drying in four epiphytic mosses growing in different vertical ranges

1979 ◽  
Vol 57 (19) ◽  
pp. 1994-1998 ◽  
Author(s):  
Peter L. Tobiessen ◽  
Nancy G. Slack ◽  
Keith A. Mott
Keyword(s):  
Water Potential ◽  
Water Content ◽  
Carbon Balance ◽  
The Other ◽  
Moss Species ◽  
Relationship Of ◽  
The Relationship ◽  
Neckera Pennata ◽  
Lower Water Content ◽  
Photosynthesis And Respiration

The response of photosynthesis and respiration to drying was measured in four species of epiphytic mosses, Ulota crispa (Hedw.) Brid., Neckera pennata Hedw., Anomodon rugellii (C. Mull.) Keissl., and Plagiomnium cuspidatum (Hedw.) T. Kop., from habitats along a desiccation gradient. There was little difference among the mosses in these responses. The relationship of water content to water potential did differ among the mosses, with Plagiomnium, the facultative epiphyte, showing a typical response of more mesic species and the other three showing a more xeric response, i.e., water potential does not begin to fall steeply until a lower water content is reached in Ulota, Neckera, and Anomodon. Both photosynthesis and respiration in all four moss species were quite sensitive to moderate water stress.

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