| effects of experimental lead pollution on the microbial communities associated with sphagnum fallax (bryophyta). | ecotoxicological studies usually focus on single microbial species under controlled conditions. as a result, little is known about the responses of different microbial functional groups or individual species to stresses. in an aim to assess the response of complex microbial communities to pollution in their natural habitat, we studied the effect of a simulated lead pollution on the microbial community (bacteria, cyanobacteria, protists, fungi, and micrometazoa) living on sphagnum fallax. mosses ... | 2007 | 17345137 |
| investigations of the structure and function of bacterial communities associated with sphagnum mosses. | high acidity, low temperature and extremely low concentration of nutrients form sphagnum bogs into extreme habitats for organisms. little is known about the bacteria associated with living sphagnum plantlets, especially about their function for the host. therefore, we analysed the endo- and ectophytic bacterial populations associated with two widely distributed sphagnum species, sphagnum magellanicum and sphagnum fallax, by a multiphasic approach. the screening of 1222 isolates for antagonistic ... | 2007 | 17922763 |
| high specificity but contrasting biodiversity of sphagnum-associated bacterial and plant communities in bog ecosystems independent of the geographical region. | mosses represent ecological niches that harbor a hitherto largely uncharacterized microbial diversity. to investigate which factors affect the biodiversity of bryophyte-associated bacteria, we analyzed the bacterial communities associated with two moss species, which exhibit different ecological behaviors and importance in bog ecosystems, sphagnum magellanicum and sphagnum fallax, from six temperate and boreal bogs in germany and norway. furthermore, their surrounding plant communities were stud ... | 2007 | 18043652 |
| [niches of seven bryophyte species in hani peat land of changbai mountains]. | based on field investigation and by using levins and pianka formula, the niches of seven bryophyte species in hani peatland of changbai mountains were studied. the results showed that the average niche breadth in nine environmental factors (total nitrogen, total phosphorous, k+ and ca2+ in peat, ph,and electrical conductivity of surface water, tree coverage, shrub coverage, and depth to water table) of the seven species decreased in the order of aulacomnium palustre > sphagnum fallax > s. magell ... | 2009 | 19637594 |
| characterizing the feeding habits of the testate amoebae hyalosphenia papilio and nebela tincta along a narrow "fen-bog" gradient using digestive vacuole content and (13)c and (15)n isotopic analyses. | population dynamics and feeding habits of the testate amoebae nebela tincta and hyalosphenia papilio were studied along a short "fen" to "bog" gradient in a sphagnum-dominated mire (jura, france). samples were collected in living "top segments" (0-3cm) and early declining "bottom segments" (3-6cm) of sphagnum fallax peat. observations of digestive vacuole content and stable isotope analyses ((13)c and (15)n) were used to establish the feeding behavior of both testate amoeba species. owing to the ... | 2011 | 21840255 |
| comparison of four bioindication methods for assessing the degree of environmental lead and cadmium pollution. | the purpose of this study was to assess the application of several bioindication methods for the monitoring of environmental pollution from pb and cd. the study area centered on the town of olkusz, poland, which is one of the oldest centers for the metallurgical industry in europe. the assessment of environmental pollution due to metals was performed using four frequently used bioindication methods: moss-bag (sphagnum fallax), determination of metal accumulation in pleurozium schreberi, silver b ... | 2011 | 21978583 |
| swift recovery of sphagnum nutrient concentrations after excess supply. | although numerous studies have addressed the effects of increased n deposition on nutrient-poor environments such as raised bogs, few studies have dealt with to what extent, and on what time-scale, reductions in atmospheric n supply would lead to recovery of the ecosystems in question. since a considerable part of the negative effects of elevated n deposition on raised bogs can be related to an imbalance in tissue nutrient concentrations of the dominant peat-former sphagnum, changes in sphagnum ... | 2008 | 18465147 |