Concept

Ombrotrophie

Publications associées (36)

Testate amoebae analysis in ecological and paleoecological studies of wetlands: past, present and future

Testate amoebae are an abundant and diverse polyphyletic group of shelled protozoa living in aquatic to moist habitats ranging from estuaries to lakes, rivers, wetlands, soils, litter, and moss habitats. Owing to the preservation of shells in sediments, te ...

Springer Netherlands2008

Autogenic succession, land-use change, and climatic influences on the Holocene development of a kettle hole mire in Northern Poland

Edward Mitchell, Mariusz Lamentowicz

We reconstructed the Holocene developmental history of a kettle-hole peatland in the Tuchola forest of Northern Poland, using pollen, testate amoebae and plant macrofossils indicators. Our aims were to determine the timing and pattern of autogenic successi ...

2008

Vegetation-environment relationships in peatlands dominated by Sphagnum fallax (Klinggr.) Klinggr. in Western Poland

Mariusz Lamentowicz

We investigated species composition and relative abundance of Sphagnum fallax dominated peatlands in relation to measured environmental variables on the basis of 26 sites in the Wielkopolska region. Most of studied plots were characterised with soft waters ...

2008

Potential implications of differential preservation of testate amoebae shells for paleoenvironmental reconstruction in peatlands

Edward Mitchell, Mariusz Lamentowicz

Testate amoebae are now commonly used in paleoenvironmental studies but little is known of their taphonomy. There is some experimental evidence for differential preservation of some testate amoeba shell types over others, but it is unclear what, if any imp ...

Springer Netherlands2008

Testate amoebae ecology and a local transfer function from a peatland in western Poland

Mariusz Lamentowicz

In Chlebowo mire (Wielkopolska region), we investigated testate amoebae in relation to ten environmental parameters in the semi-natural floating vegetation of flooded peat workings. The measured parameters included: depth to water table (DWT), ground-water ...

2008

Palaeoecological evidence for anthropogenic acidification of a kettle-hole peatland in northern Poland

Edward Mitchell, Mariusz Lamentowicz

We studied the Holocene developmental history of a small kettle-hole peatland in northern Poland using radiocarbon dating and analyses of pollen, plant macrofossils, and testate amoebae with the aim to sort out the influences of climate change, autogenic s ...

2007

Are Sphagnum-dominated regenerating cutover bogs C sinks or not? A study in the Swiss Jura Mountains with predictions of climate change impacts on the C balance

Alexandre Buttler, Edward Mitchell, Andy Siegenthaler

Growing peatlands are an important long-term carbon (C) sink and thus play a key role in the global C cycle. Vast surfaces of northern peatlands have been mined for peat and are currently abandoned. In these surfaces, secondary vegetation succession takes ...

2007

Testate amoebae-environment relationships and a hydrological transfer function from mires in the Central Rhodope Mountains, Greece

Edward Mitchell

Testate amoebae are useful environmental indicators in ecological and palaeoecological studies from peatlands. Previous quantitative studies have focused on the Sphagnum-dominated peatlands of Northern and Central Europe, North America, and New-Zealand whi ...

2007

The ecology of testate amoebae (Protists) in South-Central Alaska peatlands: building transfer function models for paleoenvironmental studies

Edward Mitchell

Testate amoebae are valuable indicators of peatland hydrology and have been used in many palaeoclimatic studies in peatlands. Because the species' ecological optima may vary around the globe, the development of transfer function models is an essential prer ...

2006

Structure of microbial communities in Sphagnum peatlands and effect of atmospheric carbon dioxide enrichment

Alexandre Buttler, Edward Mitchell, Jean-Michel Gobat

Little is known about the structure of microbial communities in Sphagnum peatlands, and the potential effects of the increasing atmospheric CO2 concentration on these communities are not known. We analyzed the structure of microbial communities in five Sph ...

2003

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