Academic literature on the topic 'Sphagnum-dominated peatlands'

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Journal articles on the topic "Sphagnum-dominated peatlands"

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Kuhry, Peter, Barbara J. Nicholson, L. Dennis Gignac, Dale H. Vitt, and Suzanne E. Bayley. "Development of Sphagnum-dominated peatlands in boreal continental Canada." Canadian Journal of Botany 71, no. 1 (1993): 10–22. http://dx.doi.org/10.1139/b93-002.

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Peat cores from five Sphagnum-dominated peatlands in boreal continental Canada were analyzed for plant macro fossils. Results indicate that peatland development was influenced both by local autogenic and regional climatic factors. The general direction in peatland development from rich fen to poor fen to bog can primarily be ascribed to internal processes, especially peat accumulation. Quantitative paleoenvironmental reconstructions based on fossil moss assemblages indicate that all five peatlands were initially dominated by brown mosses with inferred pHs of approximately 6.0, and a water tabl
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Ferland, Chantale, and Line Rochefort. "Restoration techniques for Sphagnum-dominated peatlands." Canadian Journal of Botany 75, no. 7 (1997): 1110–18. http://dx.doi.org/10.1139/b97-122.

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Ombrotrophic peatlands in North America are harvested mainly for horticultural purposes. Following intense exploitation, these peatlands are generally abandoned to natural regeneration. The abandoned sites usually remain barren or poorly revegetated by a few vascular plants for several years. The post-harvested sites are not usually recolonized by Sphagnum species (peat mosses), which are the key species to restore peatland functions. The objective of this study was to develop restoration techniques for post-harvested peatlands. The experiments centred on Sphagnum reintroduction, since peat mo
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Booth, Robert K., Stephen T. Jackson, and Catherine E. D. Gray. "Paleoecology and high-resolution paleohydrology of a kettle peatland in upper Michigan." Quaternary Research 61, no. 1 (2004): 1–13. http://dx.doi.org/10.1016/j.yqres.2003.07.013.

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We investigated the developmental and hydrological history of a Sphagnum-dominated, kettle peatland in Upper Michigan using testate amoebae, plant macrofossils, and pollen. Our primary objective was to determine if the paleohydrological record of the peatland represents a record of past climate variability at subcentennial to millennial time scales. To assess the role of millennial-scale climate variability on peatland paleohydrology, we compared the timing of peatland and upland vegetation changes. To investigate the role of higher-frequency climate variability on peatland paleohydrology, we
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Cai, Shanshan, and Zicheng Yu. "Response of a warm temperate peatland to Holocene climate change in northeastern Pennsylvania." Quaternary Research 75, no. 3 (2011): 531–40. http://dx.doi.org/10.1016/j.yqres.2011.01.003.

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AbstractStudying boreal-type peatlands near the edge of their southern limit can provide insight into responses of boreal and sub-arctic peatlands to warmer climates. In this study, we investigated peatland history using multi-proxy records of sediment composition, plant macrofossil, pollen, and diatom analysis from a 14C-dated sediment core at Tannersville Bog in northeastern Pennsylvania, USA. Our results indicate that peat accumulation began with lake infilling of a glacial lake at ~ 9 ka as a rich fen dominated by brown mosses. It changed to a poor fen dominated by Cyperaceae (sedges) and
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O’Neill, Ally, Colin Tucker, and Evan S. Kane. "Fresh Air for the Mire-Breathing Hypothesis: Sphagnum Moss and Peat Structure Regulate the Response of CO2 Exchange to Altered Hydrology in a Northern Peatland Ecosystem." Water 14, no. 20 (2022): 3239. http://dx.doi.org/10.3390/w14203239.

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Sphagnum-dominated peatlands store more carbon than all of Earth’s forests, playing a large role in the balance of carbon dioxide. However, these carbon sinks face an uncertain future as the changing climate is likely to cause water stress, potentially reducing Sphagnum productivity and transitioning peatlands to carbon sources. A mesocosm experiment was performed on thirty-two peat cores collected from two peatland landforms: elevated mounds (hummocks) and lower, flat areas of the peatland (hollows). Both rainfall treatments and water tables were manipulated, and CO2 fluxes were measured. Oth
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Robert, Élisabeth Claire, Line Rochefort, and Michelle Garneau. "Natural revegetation of two block-cut mined peatlands in eastern Canada." Canadian Journal of Botany 77, no. 3 (1999): 447–59. http://dx.doi.org/10.1139/b99-019.

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Limited areas of post-mined peatlands are recolonized by Sphagnum-dominated communities. This study aims to recognize the spontaneous Sphagnum re-establishment process and to verify if Sphagnum directly colonizes the residual peat. Conditions favoring Sphagnum revegetation are suggested. Analyses of vegetation macrofossils of the newly formed peat allow the identification of colonizing species and vegetation succession profile. Botanical components of the pioneer horizon suggest that Sphagnum species can directly colonize the residual peat. When Polytrichum strictum (Kaulf.) Presl and Eriophor
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Benavides, Juan C., Dale H. Vitt, and David J. Cooper. "The High-Elevation Peatlands of the Northern Andes, Colombia." Plants 12, no. 4 (2023): 955. http://dx.doi.org/10.3390/plants12040955.

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Andean peatlands are important carbon reservoirs for countries in the northern Andes and have a unique diversity. Peatland plant diversity is generally related to hydrology and water chemistry, and the response of the vegetation in tropical high-elevation peatlands to changes in elevation, climate, and disturbance is poorly understood. Here, we address the questions of what the main vegetation types of peat-forming vegetation in the northern Andes are, and how the different vegetation types are related to water chemistry and pH. We measured plant diversity in 121 peatlands. We identified a tot
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Miao, Y., C. Song, L. Sun, X. Wang, H. Meng, and R. Mao. "Seasonal methane emission from a boreal peatland in continuous permafrost zone of Northeast China: effects of active layer depth and vegetation." Biogeosciences Discussions 9, no. 6 (2012): 6751–75. http://dx.doi.org/10.5194/bgd-9-6751-2012.

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Abstract. Boreal peatlands are significant natural sources of methane and especially vulnerable to abrupt climate change. However, the controlling factors of CH4 emission in boreal peatlands are still unclear. In this study, we investigated CH4 fluxes and abiotic factors (temperature, water table depth, active layer depth, and dissolved CH4 concentrations in pore water) during the growing seasons in 2010 and 2011 both in shrub-sphagnum- and sedge-dominated plant communities in continuous permafrost zone of Northeast China. The objective of our study was to examine the effects of vegetation typ
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Calver, Teri, Marty Yarmuch, Alexandra J. Conway, and Katherine Stewart. "Strong legacy effect of peat composition on physicochemical properties of reclamation coversoil." Canadian Journal of Soil Science 99, no. 3 (2019): 244–53. http://dx.doi.org/10.1139/cjss-2018-0160.

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Incorporation of salvaged peat in soil cover designs for oil sands mine reclamation is a common practice. However, current peat salvage practices do not differentiate between peatland types or the botanical composition of peat. In this study, we characterized the botanical composition of natural peat and coversoil on reclaimed sites and examined the influence of botanical composition on the physicochemical characteristics of reclaimed coversoil. Peat samples were collected from 15 natural peatlands (bog, poor fen, and rich fen) and peat coversoils were sampled from six reclaimed sites in the A
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Hutton, M. J., G. M. MacDonald, and R. J. Mott. "Postglacial vegetation history of the Mariana Lake region, Alberta." Canadian Journal of Earth Sciences 31, no. 2 (1994): 418–25. http://dx.doi.org/10.1139/e94-038.

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A fossil pollen record extending from 11 300 BP to the present was recovered from Mariana Lake, Alberta (55°57′N, 112°01′W). Initially, the region had a sparse vegetation dominated by forbs and graminoids, which at approximately 10 500 BP succeeded to Picea glauca forest. Picea mariana – Sphagnum peatlands began to develop between 10 000 and 9500 BP. After 9000 BP Sphagnum-dominated sites decreased; P. glauca declined while Betula increased. From 7500 to 5500 BP Populus reached its maximum Holocene representation in the vegetation. Sphagnum-dominated peatlands almost disappeared. The changes f
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Dissertations / Theses on the topic "Sphagnum-dominated peatlands"

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Slater, Julie M. Slater. "Historical Land Use Changes and Hydrochemical Gradients In Ohio’s Sphagnum-Dominated Peatlands." The Ohio State University, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=osu1543647650696665.

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Leroy, Fabien. "Effets des changements de végétation dans les tourbières à sphaignes sur le cycle du carbone." Thesis, Orléans, 2017. http://www.theses.fr/2017ORLE2029/document.

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Les tourbières ont stocké un tiers du carbone organique des sols mondiaux (C) malgré une superficie ne représentant que 3% de la surface terrestre. Cependant, en réponse aux changements globaux, les tourbières boréales et tempérées, majoritairement dominées par des sphaignes, peuvent être envahies par des plantes vasculaires susceptibles de modifier la dynamique du C dans ces écosystèmes. Cette thèse vise à étudier comment la présence des plantes vasculaires affecte le cycle du C des tourbières à sphaignes. Ces travaux ont porté principalement sur une plante envahissante de nombreuses tourbièr
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