Variations in the sulfide regime and the distribution of macrofauna in an intertidal flat in the North Sea

Autor:	O. Giere, A. S. Niemeyer, Frank Thiermann
Rok vydání:	1996
Předmět:	chemistry.chemical_classification Abiotic component Sulfide Hydrogen sulfide Sediment Intertidal zone Mussel Aquatic Science Oceanography chemistry.chemical_compound Habitat chemistry General Earth and Planetary Sciences Environmental science Table (landform) General Environmental Science
Zdroj:	Helgoländer Meeresuntersuchungen. 50:87-104
ISSN:	1438-3888 0174-3597
DOI:	10.1007/bf02367138
Popis:	Sulfide concentrations were measured in the inner and outer Konigshafen (Sylt, Wadden Sea) from November 1990 to December 1991 to assess the fluctuations of sulfide levels in natural tidal habitats. Three different areas were compared: (1) muddy sediment (2) fine-medium sand, and (3) a mussel bed. Other abiotic factors such as Eh, pH, temperature, grain size and organic content were measured. After assessment of the macrofaunal distribution, an attempt was made to relate the distribution to the sulfide concentrations in the benthic habitat. Sulfide concentrations varied between sites throughout the year with considerable differences ranging from below 5 μM (limit of detection) to about 1 mM (Oct. 1991). The faunal composition (Table 2) at the different sites hardly varied; it was always dominated by annelids: The cirratulidTharyx marioni was the most abundant species in the upper layers of all sites, where it occurred at low sulfide concentrations (
Databáze:	OpenAIRE
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