Show simple item record

dc.contributor.authorGalloway, A. W. E.
dc.contributor.authorSchram, Julie
dc.contributor.authorLowe, A. T.
dc.contributor.authorWhippo, R.
dc.contributor.authorHeiser, S.
dc.contributor.authorIken, K.
dc.contributor.authorMcClintock, J. B.
dc.contributor.authorKlein, A. G.
dc.contributor.authorAmsler, M. O.
dc.contributor.authorAmsler, C. D.
dc.date.accessioned2024-05-13T19:53:34Z
dc.date.available2024-05-13T19:53:34Z
dc.date.issued2024-05-02
dc.identifier.citationGalloway, A. W. E., Schram, J. B., Lowe, A. T., Whippo, R., Heiser, S., Iken, K., McClintock, J. B., Klein, A. G., Amsler, M. O., & Amsler, C. D. (2024). Trophic stability and change across a sea ice cover gradient on the western Antarctic Peninsula. Marine Ecology Progress Series, 735, 43-61. https://doi.org/10.3354/meps14575en_US
dc.identifier.issn0171-8630
dc.identifier.issn1616-1599
dc.identifier.urihttp://hdl.handle.net/11122/15047
dc.description.abstractThe western Antarctic Peninsula (AP) is experiencing significant changes to sea ice cover, altering the macroalgal cover and potentially affecting the foundation of benthic food webs. We used fatty acid signatures as dietary and physiological trophic biomarkers to test the hypothesis that a gradient of 36-88% mean annual ice cover would affect the trophic ecology of fleshy macroalgae and diverse benthic invertebrate consumers along the western AP. We used SCUBA to collect organisms from benthic rocky nearshore habitats, 5-35 m depth, at 15 study sites during April-May of 2019. There were no consistent ecosystem-scale differences in the nutritionally important polyunsaturated fatty acids or other univariate fatty acid summary categories in either the seaweeds or invertebrates across the ice gradient, but we did find site-level differences in the multivariate fatty acid signatures of all seaweeds and invertebrates. Ice cover was a significant driver of the fatty acid signatures of 5 invertebrates, including 3 sessile (an anemone, a sponge, and a tunicate) and 2 mobile consumers (a sea star and a sea urchin). The multivariate fatty acid signatures of 2 other sea stars and a limpet were not affected by the ice gradient. These results indicate that the trophic ecology and resource assimilation of sessile consumers that are more connected to the macroalgal-derived food web will be more sensitive than mobile consumers to impending changes to annual ice and macroalgal cover along the western AP.en_US
dc.description.sponsorshipNational Science Foundation.en_US
dc.description.tableofcontentsAbstract -- Key words -- 1. Introduction -- 2. Materials and methods -- 3. Results -- 4. Discussion -- 5. Conclusions -- Acknowledgements -- Literature Citeden_US
dc.language.isoen_USen_US
dc.publisherInter-Researchen_US
dc.subjectSea ice coveren_US
dc.subjectWestern Antarctic Peninsulaen_US
dc.subjectAntarctic ecologyen_US
dc.subjectFatty acid signaturesen_US
dc.subjectTrophic ecologyen_US
dc.subjectClimate changeen_US
dc.subjectBenthic ecosystemen_US
dc.titleTrophic stability and change across a sea ice cover gradient on the western Antarctic Peninsulaen_US
dc.typeArticleen_US
dc.description.peerreviewYesen_US
refterms.dateFOA2024-05-13T19:53:36Z
dc.identifier.journalMarine Ecology Progress Seriesen_US


Files in this item

Thumbnail
Name:
Schram_2024_Trophic stability ...
Size:
4.111Mb
Format:
PDF

This item appears in the following Collection(s)

Show simple item record