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Mittermayr, Agnes; Fox, Sophia E; Sommer, Ulrich (2014): delta 13C, delta 15N and delta 34S of temperate eelgrass food web in the western Baltic Sea. PANGAEA, https://doi.org/10.1594/PANGAEA.848529, Supplement to: Mittermayr, A et al. (2014): Temporal variation in stable isotope composition (delta 13C, delta 15N and delta 34S) of a temperate Zostera marina food web. Marine Ecology Progress Series, 505, 95-105, https://doi.org/10.3354/meps10797

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Abstract:
Simultaneous triple stable isotope analysis of carbon, nitrogen and sulphur was employed to study the temporal variation in the food web of a subtidal eelgrass (Zostera marina) bed in the western Baltic Sea. Samples of three potential food sources: eelgrass, epiphytes and seston, as well as consumer species were collected biweekly from March through September 2011. Temporal variation of stable isotope signatures was observed in primary producers and consumer species. However, variation within a species, particularly omnivores, often exceeded variation over time. The high degree of omnivory among the generalist feeders in this eelgrass community allows for generalist feeders to flexibly switch food sources, thus enhancing food web stability. As coastal systems are subject to seasonal changes, as well as alterations related to human disturbance and climate, these food webs may retain a certain resilience due to their plentiful omnivores.
Coverage:
Latitude: 54.410000 * Longitude: 10.192500
Date/Time Start: 2011-03-08T00:00:00 * Date/Time End: 2011-09-29T00:00:00
Minimum DEPTH, water: 1.8 m * Maximum DEPTH, water: 6.7 m
Event(s):
Kiel_fjord_Z.marina-meadow * Latitude Start: 54.410000 * Longitude Start: 10.192500 * Latitude End: 54.410000 * Longitude End: 10.192500 * Date/Time Start: 2011-03-01T00:00:00 * Date/Time End: 2011-09-30T00:00:00 * Location: Kiel Fjord * Device: Biological sample (BIOS)
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethodComment
1DATE/TIMEDate/TimeMittermayr, AgnesGeocode
2DEPTH, waterDepth watermMittermayr, AgnesGeocode
3SpeciesSpeciesMittermayr, Agnes
4Sample typeSamp typeMittermayr, Agnes
5SizeSizeMittermayr, Agnes
6Number of individualsInd No#Mittermayr, Agnes
7Sample massSamp mmgMittermayr, Agnes
8δ13Cδ13C‰ PDBMittermayr, Agnesof tissue sample
9δ15Nδ15N‰ airMittermayr, Agnesof tissue sample
10δ34Sδ34S‰ CDTMittermayr, Agnesof tissue sample
11Carbon/Nitrogen ratioC/NMittermayr, Agnesof sample
12Nitrogen massNmgMittermayr, Agnes
13Carbon massCmgMittermayr, Agnes
14Sulfur massSmgMittermayr, Agnes
15Temperature, waterTemp°CMittermayr, Agnes
16SalinitySalMittermayr, Agnes
Size:
10420 data points

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