Iron-Phosphorus Feedbacks Drive Multidecadal Oscillations in Baltic Sea Hypoxia

Show simple item record Jilbert, Tom Gustafsson, Bo G. Veldhuijzen, Simon Reed, Daniel C. Helmond, Niels A. G. M. Hermans, Martijn Slomp, Caroline P. 2022-01-13T07:41:03Z 2022-01-13T07:41:03Z 2021-12-28
dc.identifier.citation Jilbert , T , Gustafsson , B G , Veldhuijzen , S , Reed , D C , Helmond , N A G M , Hermans , M & Slomp , C P 2021 , ' Iron-Phosphorus Feedbacks Drive Multidecadal Oscillations in Baltic Sea Hypoxia ' , Geophysical Research Letters , vol. 48 , no. 24 , ARTN e2021GL095908 .
dc.identifier.other PURE: 172560221
dc.identifier.other PURE UUID: 7028d1c0-f3f9-471c-b8b7-b5ea8a20f0b2
dc.identifier.other WOS: 000735897000023
dc.identifier.other ORCID: /0000-0001-8165-0168/work/106339675
dc.description.abstract Hypoxia has occurred intermittently in the Baltic Sea since the establishment of brackish-water conditions at similar to 8,000 years B.P., principally as recurrent hypoxic events during the Holocene Thermal Maximum (HTM) and the Medieval Climate Anomaly (MCA). Sedimentary phosphorus release has been implicated as a key driver of these events, but previous paleoenvironmental reconstructions have lacked the sampling resolution to investigate feedbacks in past iron-phosphorus cycling on short timescales. Here we employ Laser Ablation (LA)-ICP-MS scanning of sediment cores to generate ultra-high resolution geochemical records of past hypoxic events. We show that in-phase multidecadal oscillations in hypoxia intensity and iron-phosphorus cycling occurred throughout these events. Using a box model, we demonstrate that such oscillations were likely driven by instabilities in the dynamics of iron-phosphorus cycling under preindustrial phosphorus loads, and modulated by external climate forcing. Oscillatory behavior could complicate the recovery from hypoxia during future trajectories of external loading reductions. en
dc.format.extent 11
dc.language.iso eng
dc.relation.ispartof Geophysical Research Letters
dc.rights cc_by_nc
dc.rights.uri info:eu-repo/semantics/openAccess
dc.subject Baltic Sea
dc.subject biogeochemistry
dc.subject box modeling
dc.subject deoxygenation
dc.subject oscillations
dc.subject sediments
dc.subject NUTRIENT
dc.subject OXYGEN
dc.subject CARBON
dc.subject MODEL
dc.subject WATER
dc.subject SEDIMENTS
dc.subject 1171 Geosciences
dc.subject 1172 Environmental sciences
dc.title Iron-Phosphorus Feedbacks Drive Multidecadal Oscillations in Baltic Sea Hypoxia en
dc.type Article
dc.contributor.organization Environmental Geochemistry
dc.contributor.organization Department of Geosciences and Geography
dc.contributor.organization Helsinki Institute of Sustainability Science (HELSUS)
dc.contributor.organization Marine Ecosystems Research Group
dc.contributor.organization Aquatic Biogeochemistry Research Unit (ABRU)
dc.contributor.organization Tvärminne Zoological Station
dc.description.reviewstatus Peer reviewed
dc.relation.issn 0094-8276
dc.rights.accesslevel openAccess
dc.type.version publishedVersion

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