Skip to Main Content
Skip Nav Destination
GEOREF RECORD

Natural and anthropogenic influence on the distribution of salt marsh Foraminifera in the Bay of Tuemlau, German North Sea

Katharina Mueller-Navarra, Yvonne Milker and Gerhard Schmiedl
Natural and anthropogenic influence on the distribution of salt marsh Foraminifera in the Bay of Tuemlau, German North Sea
Journal of Foraminiferal Research (January 2016) 46 (1): 61-74

Abstract

We studied the distribution and ecology of modern foraminifera in a salt marsh in the Bay of Tumlau, Eiderstedt peninsula at the German North Sea coast; this marsh is influenced by human activities. To encompass the full range of environments, we sampled natural and grazed salt marshes, and adjacent tidal flats for foraminiferal and environmental parameters, including salinity, pH, grain size, and elevation relative to the tidal frame. Agglutinated taxa Jadammina macrescens, Trochammina inflata, and Miliammina fusca, and the miliolid Quinqueloculina sp. dominate the vegetated salt marshes, however their distribution patterns lack a clear separation between low, middle and high marsh faunas. Tidal flats, tidal channels, marsh ponds and drainage ditches are characterized by hyaline species, among which Elphidium williamsoni is dominant in ponds, while Elphidium excavatum, Haynesina germanica, and Ammonia batava dominate tidal flats and ditches. The different marsh species occupy specific niches linked to ecosystem stability and the combined influence of submergence frequency, substrate (i.e., grain size), pH, and likely food sources. The observed lack of salt marsh foraminiferal subzones and the small-scale spatial variability of species distributions reflect the various impacts of diking, ditching, sheep grazing and sediment compaction on the morphology, hydrology and vegetation in the studied salt marsh. The faunas lack a consistent relation to elevation above sea-level, restricting the applicability of foraminiferal reference data sets from human-interfered salt marshes for past sea-level reconstructions.


ISSN: 0096-1191
EISSN: 1943-264X
Coden: JFARAH
Serial Title: Journal of Foraminiferal Research
Serial Volume: 46
Serial Issue: 1
Title: Natural and anthropogenic influence on the distribution of salt marsh Foraminifera in the Bay of Tuemlau, German North Sea
Affiliation: University of Hamburg, Center for Earth System Research and Sustainability, Hamburg, Germany
Pages: 61-74
Published: 201601
Text Language: English
Publisher: Cushman Foundation for Foraminiferal Research, Ithaca, NY, United States
References: 92
Accession Number: 2016-016607
Categories: Quaternary geology
Document Type: Serial
Bibliographic Level: Analytic
Annotation: Includes 4 appendices
Illustration Description: illus. incl. sketch map
N54°21'00" - N54°21'00", E08°49'60" - E08°49'60"
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Abstract, Copyright, Cushman Foundation for Foraminiferal Research. Reference includes data from GeoScienceWorld, Alexandria, VA, United States
Update Code: 201609
Close Modal

or Create an Account

Close Modal
Close Modal