delta 13C, delta 15N and delta 34S of temperate eelgrass food web in the western Baltic Sea


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.

Supplement to: Mittermayr, Agnes; Fox, Sophia E; Sommer, Ulrich (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

Related Identifier
Metadata Access
Creator Mittermayr, Agnes; Fox, Sophia E; Sommer, Ulrich
Publisher PANGAEA
Publication Year 2014
Rights Creative Commons Attribution 3.0 Unported;
OpenAccess true
Resource Type Supplementary Dataset; Dataset
Format text/tab-separated-values
Size 10420 data points
Discipline Earth System Research
Spatial Coverage (10.193 LON, 54.410 LAT); Kiel Fjord
Temporal Coverage Begin 2011-03-08T00:00:00Z
Temporal Coverage End 2011-09-29T00:00:00Z