Multi-level responses of Macoma balthica to recurring hypoxic disturbance

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dc.contributor.author Villnäs, Anna
dc.contributor.author Norkko, Alf
dc.contributor.author Lehtonen, Kari K.
dc.date.accessioned 2020-12-31T23:32:15Z
dc.date.available 2021-12-17T22:45:13Z
dc.date.issued 2019-01
dc.identifier.citation Villnäs , A , Norkko , A & Lehtonen , K K 2019 , ' Multi-level responses of Macoma balthica to recurring hypoxic disturbance ' , Journal of Experimental Marine Biology and Ecology , vol. 510 , pp. 64-72 . https://doi.org/10.1016/j.jembe.2018.10.005
dc.identifier.other PURE: 121471521
dc.identifier.other PURE UUID: 8ccd04f1-98af-419f-94d2-878b38f0233c
dc.identifier.other WOS: 000452572600008
dc.identifier.other Scopus: 85055478616
dc.identifier.uri http://hdl.handle.net/10138/323946
dc.description.abstract The frequency of seasonal and short-term hypoxia is increasing in coastal seas. How such repeated disturbances affect key species that have important roles for ecosystem processes and functions remains, however, unknown. By performing a field experiment we explored if the bivalve Macoma balthica can cope with short-term, recurring hypoxic stress, and investigated how hypoxia affects the condition of surviving bivalves. By combining data on different levels of biological organization, i.e., on physiology (biomarker response), behaviour and demography, we identified stress responses before the population declined. One pulse of hypoxic disturbance (3 days) resulted in behavioural alterations, as adult M. balthica extended their siphons, emerged towards the sediment surface and expressed decreased reburial rates. However, the demographic structure of the population remained unaltered. Several pulses of recurring hypoxic stress resulted in physiological response with changes in glutathione reductase and acetylcholinesterase enzyme activities. The recurring hypoxic disturbance was observed to affect juvenile bivalves before adults, while pro-longed hypoxia reduced the entire bivalve population. Our results clearly show that hypoxic stress changes the behaviour and physiology of M. balthica before demographic changes occur, which is likely to have severe implications for the contribution of this key species to ecosystem functioning. That a combination of measures at different levels of organization can detect disturbances at an early stage suggests that such an approach would be useful for assessing the effects of disturbances on marine ecosystems that are increasingly affected by anthropogenic change. en
dc.format.extent 9
dc.language.iso eng
dc.relation.ispartof Journal of Experimental Marine Biology and Ecology
dc.rights cc_by_nc_nd
dc.rights.uri info:eu-repo/semantics/openAccess
dc.subject Macoma balthica
dc.subject Biomarkers
dc.subject Behaviour
dc.subject Demography
dc.subject Hypoxia
dc.subject Baltic Sea
dc.subject FUNCTIONAL-GROUP APPROACH
dc.subject OXIDATIVE STRESS
dc.subject BIOMARKER RESPONSES
dc.subject OXYGEN DEFICIENCY
dc.subject DRASTIC CHANGES
dc.subject BENTHIC FAUNA
dc.subject AVAILABILITY
dc.subject POLLUTION
dc.subject BIVALVES
dc.subject BIOTURBATION
dc.subject 1172 Environmental sciences
dc.subject 1181 Ecology, evolutionary biology
dc.title Multi-level responses of Macoma balthica to recurring hypoxic disturbance en
dc.type Article
dc.contributor.organization Ecosystems and Environment Research Programme
dc.contributor.organization Tvärminne Benthic Ecology Team
dc.contributor.organization Marine Ecosystems Research Group
dc.contributor.organization Tvärminne Zoological Station
dc.description.reviewstatus Peer reviewed
dc.relation.doi https://doi.org/10.1016/j.jembe.2018.10.005
dc.relation.issn 0022-0981
dc.rights.accesslevel openAccess
dc.type.version acceptedVersion

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