Sensitivities to global change drivers may correlate positively or negatively in a foundational marine macroalga.

Al-Janabi, Balsam, Wahl, Martin , Karsten, Ulf , Graiff, Angelika and Kruse, Inken (2019) Sensitivities to global change drivers may correlate positively or negatively in a foundational marine macroalga. Open Access Scientific Reports, 9 (1). Art.Nr. 4653. DOI 10.1038/s41598-019-51099-8.

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Abstract

Ecological impact of global change is generated by multiple synchronous or asynchronous drivers which interact with each other and with intraspecific variability of sensitivities. In three near-natural experiments, we explored response correlations of full-sibling germling families of the seaweed Fucus vesiculosus towards four global change drivers: elevated CO2 (ocean acidification, OA), ocean warming (OW), combined OA and warming (OAW), nutrient enrichment and hypoxic upwelling. Among families, performance responses to OA and OW as well as to OAW and nutrient enrichment correlated positively whereas performance responses to OAW and hypoxia anti-correlated. This indicates (i) that families robust to one of the three drivers (OA, OW, nutrients) will also not suffer from the two other shifts, and vice versa and (ii) families benefitting from OAW will more easily succumb to hypoxia. Our results may imply that selection under either OA, OW or eutrophication would enhance performance under the other two drivers but simultaneously render the population more susceptible to hypoxia. We conclude that intraspecific response correlations have a high potential to boost or hinder adaptation to multifactorial global change scenarios.

Document Type: Article
Research affiliation: OceanRep > GEOMAR > FB3 Marine Ecology > FB3-EOE-B Experimental Ecology - Benthic Ecology
Refereed: Yes
Open Access Journal?: Yes
DOI etc.: 10.1038/s41598-019-51099-8
ISSN: 2045-2322
Projects: BIOACID
Date Deposited: 10 Oct 2019 12:25
Last Modified: 10 Oct 2019 12:25
URI: http://oceanrep.geomar.de/id/eprint/47949

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