Otolith accumulation rates in sediment core M144_5-6 from the central western Aegean Sea

DOI

Otolith accumulation rates (OAR) and fish family composition were analyzed throughout core M144 KC5-6, including Myctophidae, Sternoptychidae, Engraulidae, Gadidae, and Gonostomatidae, representing the most common taxa of the otolith record. A total number of 3272 otoliths has been classified. Otolith count and identification was performed on both cores A and B, with lower resolution between 0.5 cm and 151.5 cm, and highest resolution between 152.5 cm and 272.5 cm, using a binocular stereo microscope (magnification 10x – 20x) and a bifurcated illuminator. OAR was estimated by dividing raw otolith counts by dry bulk sediment mass, and further multiplied with sediment accumulation rate and dry bulk density of each sample and multiplied by ten. Identification of otoliths to the lowest taxonomic level is based on an automatic taxon identification software, web database, and otolith catalogs from the Mediterranean region. The predominance of the target families "Myctophidae, Engraulidae, and Sternoptychidae" comprising over 81% of the fossil assemblage, provides a robust dataset for analyzing their population dynamics over the last 11.4 kyr, to describe fish response to changing environmental conditions, before, during and after sapropel S1 deposition, as discussed in Pallacks et al. (in review).

Identifier
DOI https://doi.pangaea.de/10.1594/PANGAEA.974492
Related Identifier IsPartOf https://doi.pangaea.de/10.1594/PANGAEA.974530
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.974492
Provenance
Creator Pallacks, Sven ORCID logo; Ziveri, Patrizia ORCID logo; Jannke, Helen; Lin, Chien-Hsiang; Subhas, Adam V ORCID logo; Galbraith, Eric Douglas ORCID logo; Kaboth-Bahr, Stefanie ORCID logo; Friedrich, Oliver ORCID logo; Bahr, André; Koutsodendris, Andreas ORCID logo; Pross, Jörg; Norris, Richard D ORCID logo
Publisher PANGAEA
Publication Year 2025
Funding Reference Generalitat de Catalunya https://doi.org/10.13039/501100002809 Crossref Funder ID 2021 SGR 00640 MERS; Ministerio de Ciencia, Innovación y Universidades https://doi.org/10.13039/501100004837 Crossref Funder ID CEX2019-000940-M ; Ministerio de Ciencia, Innovación y Universidades https://doi.org/10.13039/501100004837 Crossref Funder ID MDM-2015-0552-16-2 ; Ministerio de Ciencia, Innovación y Universidades https://doi.org/10.13039/501100004837 Crossref Funder ID PID2020-113526RB-I00 ; Ministry of Economy, Industry and Competitiveness https://doi.org/10.13039/501100003329 Crossref Funder ID BES-2017-080730 ; National Science Foundation https://doi.org/10.13039/100000001 Crossref Funder ID 1821140 https://www.nsf.gov/awardsearch/showAward?AWD_ID=1821140 NSF-EAGER: Eastern Mediterranean Paleoclimate and Ecosystems during the Rise of Early Civilizations (EMPIRE); National Science Foundation https://doi.org/10.13039/100000001 Crossref Funder ID 1923998 https://www.nsf.gov/awardsearch/showAward?AWD_ID=1923998 Biogenic Calcium Carbonate Solubilities and Reaction Rates by Lab and Field Saturometry
Rights Creative Commons Attribution 4.0 International; Data access is restricted (moratorium, sensitive data, license constraints); https://creativecommons.org/licenses/by/4.0/
OpenAccess false
Representation
Resource Type Dataset
Format text/tab-separated-values
Size 2110 data points
Discipline Earth System Research
Spatial Coverage (23.645 LON, 38.926 LAT); S Skopelos