Shell microstructures (disturbance lines) of Arctica islandica (Bivalvia): a potential proxy for severe oxygen depletion

Publikationstyp:
Zeitschriftenaufsatz
Metadaten:
Autoren
Autoren-URL
https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=fis-test-1&SrcAuth=WosAPI&KeyUT=WOS:001127473100001&DestLinkType=FullRecord&DestApp=WOS_CPL
DOI
10.3389/fmars.2023.1219716
eISSN
2296-7745
Externe Identifier
  • Clarivate Analytics Document Solution ID: CT4H7
Zeitschrift
FRONTIERS IN MARINE SCIENCE
Schlüsselwörter
  • ocean quahog
  • bivalve sclerochronology
  • disturbance lines
  • physiological stress
  • hypoxia
  • Baltic Sea
Artikelnummer
ARTN 1219716
Datum der Veröffentlichung
2023
Status
Published
Titel
Shell microstructures (disturbance lines) of <i>Arctica islandica</i> (Bivalvia): a potential proxy for severe oxygen depletion
Sub types
  • Article
Ausgabe der Zeitschrift
10

Datenquelle: Web of Science (Lite)

Andere Metadatenquellen:
Abstract
<jats:p>The spread of oxygen deficiency in nearshore coastal habitats endangers benthic communities. To better understand the mechanisms leading to oxygen depletion and eventually hypoxia, predict the future development of affected ecosystems, and define suitable mitigation strategies requires detailed knowledge of the dissolved oxygen (DO) history. Suitable high-resolution DO archives covering coherent time intervals of decades to centuries include bivalve shells. Here, we explored if the microstructure, specifically disturbance lines, in shells of <jats:italic>Arctica islandica</jats:italic> from the Baltic Sea can be used as an alternative or complementary proxy to Mn/Ca<jats:sub>shell</jats:sub> to track the frequency and severity of past low-DO events. Disturbance lines differ from periodic annual growth lines by the presence of fine complex crossed lamellae instead of irregular simple prisms. Aside from a qualitative assessment of microstructural changes, the morphology of individual biomineral units (BMUs) was quantitatively determined by artificial intelligence-assisted image analysis to derive models for DO reconstruction. As demonstrated, Mn-rich disturbance lines can provide a proxy for past deoxygenation events (i.e., DO &amp;lt; 45 µmol/L), but it currently remains unresolved if low DO leads to microstructurally distinct features that differ from those caused by other environmental stressors. At least in studied specimens from the Baltic Sea and Iceland, low temperature, salinity near the lower physiological tolerance, or food scarcity did not result in disturbance lines. With decreasing DO supply, disturbance lines seem to become more prominent, contain more Mn, and consist of increasingly smaller and more elongated BMUs with a larger perimeter-to-area ratio. Although the relationship between DO and BMU size or elongation was statistically significant, the explained variability (&amp;lt;1.5%) was too small and the error too large to reconstruct DO values. BMU parameters may reveal a closer relationship with DO if studied in three dimensions and if the DO content was determined at high resolution, directly at the position where the bivalves lived, something that future work should address.</jats:p>
Autoren
DOI
10.3389/fmars.2023.1219716
eISSN
2296-7745
Zeitschrift
Frontiers in Marine Science
Online publication date
2023
Status
Published online
Herausgeber
Frontiers Media SA
Herausgeber URL
http://dx.doi.org/10.3389/fmars.2023.1219716
Datum der Datenerfassung
2023
Titel
Shell microstructures (disturbance lines) of Arctica islandica (Bivalvia): a potential proxy for severe oxygen depletion
Ausgabe der Zeitschrift
10

Datenquelle: Crossref

Author's licence
CC-BY
Autoren
Hosting institution
Universitätsbibliothek Mainz
Sammlungen
  • DFG-491381577-G
Resource version
Published version
DOI
10.3389/fmars.2023.1219716
File(s) embargoed
false
Open access
true
ISSN
2296-7745
Zeitschrift
Frontiers in Marine Science
Schlüsselwörter
  • 500 Naturwissenschaften
  • 500 Natural sciences and mathematics
  • 550 Geowissenschaften
  • 550 Earth sciences
  • 560 Paläontologie
  • 560 Paleontology
Sprache
eng
Open access status
Open Access
Paginierung
1219716
Datum der Veröffentlichung
2023
Public URL
https://openscience.ub.uni-mainz.de/handle/20.500.12030/9766
Herausgeber
Frontiers Media
Datum der Datenerfassung
2023
Datum, an dem der Datensatz öffentlich gemacht wurde
2023
Zugang
Public
Titel
Shell microstructures (disturbance lines) of Arctica islandica (Bivalvia) : a potential proxy for severe oxygen depletion
Ausgabe der Zeitschrift
10

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