Work

Taxon composition and food-web structure in a morphometric gradient of Baltic Sea land-uplift bays

Year: 2024

Type: article

Abstract: hansen, J. P., Wikström, s. a. & Kautsky, l. 2012: taxon composition and food-web structure in a morphometric gradient of Baltic sea land-uplift bays.Boreal Env.Res.17: 1-20.Shallow Baltic Sea bays undergo a process of morphometric isolation from the sea due to post-glacial land uplift.Recent studies have documented that both flora and fauna communities change along this gradient.Changes in taxon composition may in turn alter feeding ecology and trophic relationships.In addition, the relative importance of energy from terrestrial sources may increase with bay isolation.In accordance with previous studies, we found a change in the community composition of both flora and fauna with bay isolation.Results of a stable-isotope analysis (δ 13 C, δ 15 N) suggested that epiphytes and periphyton are the major carbon sources for most benthic primary consumers, but that their importance in relation to angiosperms and charophytes decreased with bay isolation.The results also indicated that filter feeders utilize terrestrially-derived carbon, but its importance could not be critically related to bay isolation.Trophic positions of the consumers were similar across the bay isolation gradient.

Source: Työväentutkimus Vuosikirja

DOI: 10.60910/m6s7-99jh

Authors: Hansen, Joakim P., Wikström, Sofia A., Kautsky, Lena

Institution: Stockholm University

Language: English

Topic: Isotope Analysis in Ecology

Subfield: Ecology

Field: Environmental Science

Domain: Physical Sciences

SDG: Life below water

Open Access status: green

Funder: Stockholms Universitet