River with the Amazon, four had a peat deposit from 0.10 to 2.10 m thick. Another two sites had other organic soil type which could not be called peat. Only one site did not have any organic deposit. The loss-on-ignition (LOI), carbon content and dry bulk density, measured for the four peatland sites, varied from 17.7 to 97.4 %, 11 to 59 %, and ...Web

Mire ecosystems can be divided in minerotrophic peat swamps and ombrotrophic peat bogs (see e.g., Heinselman, 1970, ... Young and relatively thin convex peat deposits can receive nutrients also from the underlying mineral soil and groundwater with the capillary rise of water and nutrients in the peat pores (Hill and Siegel, 1991, …Web

This contrasts with the classification of peat as a soil deposit which focuses on somewhat different factors (e.g., ... The raised bog is an ombrotrophic system, while the lagg fen is by definition minerotrophic fen, and neither can continue in a fully functioning state without the other. Within landscapes dominated by peat, on the other hand ...Web

species that could distinguish the peat deposit as either a bog or fen (rather than an organic soil de-posit of graminoid or marsh origin) were used. Between 1976 and 1983 field …Web

A range of mire and peat macrofossils which can be found in northwest European peat bog (ombrotrophic) and fen (minerotrophic peatland) deposits are illustrated in an extensive series of figures ...Web

development. Many countries evaluate peat resources based on volume or area because the variations in densities and thickness of peat deposits make it difficult to estimate …Web

Numerous studies have shown that minerotrophic peat bogs faithfully record the atmospheric deposition of lithogenic, non-leachable and non ... pH of pore waters or ash concentrations throughout the peat column are often used as indicators of the ombrotrophic–minerotrophic boundary of peat deposits (Cortizas et al., 2002, Kylander …Web

accumulated for centuries within the peat deposit and can be quickly converted to ëé 2 in the case of ineffi-cient exploitation [13]. Peat deposits all over the world accumulate ca. 0.14 × 10 9 tons of carbon (C) per year; the amount of C yearly released in the course of natural and anthropogenic destruction of peatlands is from 0.03 to 0. ...Web

Peatlands play outsized roles in the global carbon cycle. Despite occupying a rather small fraction of the terrestrial biosphere (~3%), these ecosystems account for roughly one third of the global soil carbon pool. This carbon is largely comprised of undecomposed deposits of plant material (peat) that may be meters thick. The fate of this deep carbon …Web

Patrick examined the diatoms of the mixed Patschke bog peat deposits (Texas, TX, USA), and ... (Oromia, Ethiopia) is a minerotrophic peat bog formed at 11418 ± 557 years cal BP, in a glacier over-excavation on a basaltic rock bed. The diatom sequence along the profile shows two regularly alternating phases (subaerial/aquatic), closely …Web

The peat deposit is a compact, undisturbed remnant of a minerotrophic fen underlined by sand sediments. The main feature of the peat is a presence of a continuous, horizontal dark layer, about 5–15 cm thick, rich in charcoal, located in the middle of the peat deposit.

This is because most paleoecological research has focused on peat deposits in raised bogs, and is designed to relate bog surface data to climate conditions. However, underlying peat layers in a core from an ombrotrophic mire often correspond to the more minerotrophic periods of its development, specifically fen and fen-bog transition stages.Web

A review of the literature exposes the conflicted use of topogenous and ombrogenous mires (Figure 3.18).For example, Wheeler (1999) referred the use of "ombrogenous wetlands" to be restricted "flattish surface". Yerima and Van Ranst (2005) referred to the tropical ombrogenous peat as lowland deposit. However, a large part of the literature agrees …Web

Peat deposits consist primarily of Sphagnum peat at the surface with woody, sedge, and aquatic plant residues at depth15• Three of ... Site WS-3 is a minerotrophicWeb

loss from peat layers. The dried peat decomposes, eliminating the peat layer under the stand in a few decades. The stands eventually die, many in their first century, and …Web

It is probable that the cycling of major compounds in minerotrophic peat deposits is related to the lithogenic admixture or to the deposition of dust particles (Le Roux et al. 2006), and that the basic cations content in tree rings are rather related to their content and availability from the exchangeable complex in soils.Web

The restored portion of the peatland consists of 15 ha, which was utilized for horticultural peat extraction from 1946 to 2000. This portion was initially a raised bog, which was extracted down to its minerotrophic peat layer and residual peat conditions of the site now resemble that of a fen with peat pH of 5.0–5.3 and specific electrical conductivity of …Web

This contrasts with the classification of peat as a soil deposit which focuses on somewhat different factors (e.g., FAO 2009 ). A widely accepted definition of peat as a soil states it must be at least 30% organic plant matter accumulated in situ (Joosten and Clarke 2002) with a thickness of 30 cm or more.Web

Examination of the trophic status finds the deposit is comprised of minerotrophic peat (Mn) which transitions (Tr) to ombrotrophic peat (Om) in upper layers. The age model (A) dates the record at ...Web

Some peat deposits (buried peat layers, perturbed peatlands) currently lack the ability to form peat. The formation and accumulation of the peat ... Minerotrophic mires showing the influence of local conditions. Ferrous‐ferric reactions account for the slope of the main area. The two parallel dark arrows (essentially following Nernst Equation ...Web

The entire core consists of black peat, grey peaty gyttja and dark grey clayey gyttja, as shown in Fig. 3. Also illustrated in this figure are the ash yield and degree of humification. Conventionally, ombrotrophic peat deposits have an inorganic content of <5%, while minerotrophic deposits have an inorganic content of >5%.Web

Peat deposits are found in the Niayes region of Senegal, which stretches along the coast from Dakar to St. Louis, an area characterized by a series of stable dunes and depressions lying behind the shoreline ... Cuban peat is coastal and minerotrophic and the vegetation is mostly mangroves or herbaceous plants. The most important peatland …Web

Recent peat accumulation rates in minerotrophic peatlands of the Bay James region, eastern Canada, inferred by 210 Pb and 137 Cs radiometric techniques. Appl. Radiat. Isotopes ... The inorganic geochemistry of a peat deposit on the eastern Qinghai-Tibetan Plateau and insights into changing atmospheric circulation in central Asia during …Web

Thanks to their unique physical, chemical and biological properties, peat deposits are considered archives of past hydrological and vegetational changes on the peatland and …Web

With this data as well as topography measurements of the peat deposit from one of the sites, we showed that minerotrophic and ombrotrophic peatlands can be …Web

With this data as well as topography measurements of the peat deposit from one of the sites, ... Nutrient dynamics in minerotrophic peat mires. Aquatic Botany (1986) Weiss D. et al. The geochemistry of major and selected trace elements in a forested peat bog, Kalimantan, SE Asia, and its implications for past atmospheric dust deposition ...Web

MP1 was characterized by well-defined minerotrophic peat within a depth range of 46–62 cm, whereas the ash content and bulk density systematically decreased toward the top of the profile thus having more of an ombrotrophic status. ... The inorganic geochemistry of a peat deposit on the eastern Qinghai-tibetan plateau and insights into ...Web

A peat deposit occupying over 80 square kilometers, and averaging 8 meters in thickness, was discovered on the Caribbean coast of northwestern Panama near the town of Changuinola. ... Toward the edges, the deposit has a surface cover of more minerotrophic plants (such as swamp-forest trees, ferns, and palms). …Web

Ombrotrophic 13, minerotrophic 13: Hydromorphological typology: Raised blanket bog 11,14, ridge-raised bogs 11,14: Hierarchical classification of mire systems (Tope system) ... The average depth among these sources is >0.3 m for a deposit to be defined as peat, but it ranges between >0.1 m and >0.6 m, with the most common depth threshold …Web

Three nearby located mires (Svetupe, Dzelve and Eipurs Mire) were selected for this study with the a im to analyze functional groups of low moor and raised bog peat by using Fourier transform infrared spectroscopy. Functional groups of peat and their relations from two ombrotrophic and one minerotrophic mire were studied. Despite small dist ance …Web

The peat deposit is a compact, undisturbed remnant of a minerotrophic fen underlined by sand sediments. The main feature of the peat is a presence of a continuous, horizontal dark layer, about 5–15 cm thick, rich in charcoal, located in the middle of …Web