By Dr. Sabine Dittmann (auth.), Dr. Sabine Dittmann (eds.)

This booklet covers the synthesis of the joint examine undertaking ELA W AT (Elastizitat des Okosystems Wattenmeer = Resilience of the Wadden Sea Ecosystem), which was once a part of the "Ecosystem examine Wadden Sea" in Germany. the main ob­ jective of ELA WAT used to be the research of power balance houses and correct tactics for regeneration during this intertidal atmosphere. The synthesis of this professional­ ject summarizes the result of a number of years of box reviews on spatial and temporal styles of numerous abiotic and biotic parameters and at the results of disturbances. in accordance with this research, balance houses and mechanisms have been pointed out. the implications give a contribution to the security of methods during this coastal atmosphere (Chap. 12). This booklet at the interdisciplinary undertaking ELA W AT additionally offers an in depth case research at the ecology of a backbarrier approach. The "Ecosystem study Wadden Sea" was once a part of the surroundings study software of the Federal Republic of Germany and a contribution to the MAB­ programme of the UNESCO (MAB-5). result of this interdisciplinary study scheme have been intended to shape the medical history of political judgements for the safety and sustainable use of this coastal atmosphere. therefore the "Ecosystem learn Wadden Sea" the ideas of the precautionary precept and environmental examine of the government. The examine was once performed in organization with the administrations of the Wadden Sea nationwide Parks within the states of Schleswig-Holstein and reduce Saxony.

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The Swinnplate (Fig. ), while the Groninger Plate (Fig. 4) was covered with the tube-worm Lanice conchilega in patches of varying density. Both species intluence sediment and biota in their vicinity, but in different ways. The blue mussel affects the surrounding area predominantly by the biogenic deposition of mud in the form of faeces and pseudofaeces, which are deposited in and around the mussel beds. Additionally, the roughness of these beds reduces current velocities which results in the physical settling of particles within the mussel beds.

Duration of inundation and exposure times at the Swinnplate and the Groninger Plate The duration of exposure and inundation at the Groninger Plate and the Swinnplate was determined by geodetic data, meteorological conditions and neap/spring tide. Since the Gri)ninger Plate lies higher than the Swinnplate, the former is normally flooded longer than the Swinnplate. Because of the varying morphology of the flat some sections are exposed earlier than others. At the Swinnplate, the central position is characterized by equally long inundation and exposure times (about 6 hours).

Age determination via the amino acid content in bivalve shells, may provide more precise results in the future. 1 Introduction In geology, a facies is defined as a specific character of a sediment with a differentiation between anorganic (lithofacies) and biogenic characteristics (biofacies). The latter may be presented by bodies or skeletons of fossil lifeforms or their traces (Lebensspuren). Actuopaleontology uses recent organisms to interpret biofacies assuming that the same processes lead to the same results independent from the point of time in the earth's history.

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