Publication

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

Edward Mitchell
2007
Article
Résumé

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 while other types of peatlands and other regions have been little studied Here we present the first quantitative ecological study of testate amoebae from mires in northern Greece. Testate amoebae were extracted from 61 samples taken from four small mires in the Elatia Forest, northern Macedonia. Relationships with the environmental data were investigated using redundancy analysis and mantel tests. Transfer function models were derived using a variety of techniques. Results demonstrate that as in bogs, hydrology is the most important control on amoebae community composition. Transfer function models enable water tables to be predicted within 2.5cm, when data selection is used this is reduced to less than 2cm. pH is also an important environmental control on testate amoebae communities, a transfer function model enables pH prediction within 0.4 pH units. The hydrological transfer function is the best performing such model yet produced. This transfer function will allow quantitative palaeohydrological reconstruction from these mires.

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Concepts associés (38)
Mire
A mire, peatland, or quagmire is a wetland area dominated by living peat-forming plants. Mires arise because of incomplete decomposition of organic matter, usually litter from vegetation, due to water-logging and subsequent anoxia. All types of mires share the common characteristic of being saturated with water, at least seasonally with actively forming peat, while having their own ecosystem. Like coral reefs, mires are unusual landforms that derive mostly from biological rather than physical processes, and can take on characteristic shapes and surface patterning.
Grèce
La Grèce, en forme longue la République hellénique (en grec : , , ou officiellement , [Démocratie hellénique] ; en grec ancien et en katharévousa ), est un pays d’Europe du Sud et des Balkans. On la désigne parfois par le terme Hellade. D'une superficie de pour un peu moins de onze millions d'habitants, le pays partage des frontières terrestres avec l’Albanie, la Macédoine du Nord, la Bulgarie et la Turquie et des frontières maritimes avec Chypre, l'Albanie, l'Italie, la Libye, l'Égypte et la Turquie (cette dernière est la source du contentieux gréco-turc en mer Égée).
Histoire de la Grèce
Cet article contient les faits essentiels concernant l'histoire de la Grèce de la préhistoire à nos jours. Il ne s'agit pas seulement de l'histoire du territoire de la Grèce actuelle, mais d'un ensemble de territoires où la civilisation grecque a régné au cours de ses épisodes successifs : la Grèce de l'époque mycénienne, la Grèce des cités classiques (Athènes, Sparte), la Grèce hellénistique de l'empire d’Alexandre le Grand (de la Macédoine à l'Afghanistan et à l'Égypte), la Grèce de l’Empire romain, puis de l'Empire byzantin, prolongement de l'Empire romain d'Orient, la Grèce sous domination ottomane, puis, après l'indépendance proclamée en 1821, le royaume de Grèce, et l'actuelle République hellénique, la troisième, qui date de 1974.
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