Key Environmental Factors Controlling Planktonic Foraminiferal and Pteropod Community’s Response to Late Quaternary Hydroclimate Changes in the South Aegean Sea (Eastern Mediterranean)
A multidisciplinary study was conducted in order to investigate the environmental factors affecting the planktonic foraminiferal and pteropod communities of the south Aegean Sea. Aspects of the Late Quaternary paleoceanographic evolution were revealed by means of quantitative analyses of planktonic...
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MDPI AG
2020
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ftdoajarticles:oai:doaj.org/article:476fd972198344bc8861d8449b62e5a2 2023-05-15T18:00:42+02:00 Key Environmental Factors Controlling Planktonic Foraminiferal and Pteropod Community’s Response to Late Quaternary Hydroclimate Changes in the South Aegean Sea (Eastern Mediterranean) Christina Giamali George Kontakiotis Efterpi Koskeridou Chryssanthi Ioakim Assimina Antonarakou 2020-09-01T00:00:00Z https://doi.org/10.3390/jmse8090709 https://doaj.org/article/476fd972198344bc8861d8449b62e5a2 EN eng MDPI AG https://www.mdpi.com/2077-1312/8/9/709 https://doaj.org/toc/2077-1312 doi:10.3390/jmse8090709 2077-1312 https://doaj.org/article/476fd972198344bc8861d8449b62e5a2 Journal of Marine Science and Engineering, Vol 8, Iss 709, p 709 (2020) paleoceanographic evolution planktonic foraminifera pteropods stable isotopes sea surface temperature (SST) stratification Naval architecture. Shipbuilding. Marine engineering VM1-989 Oceanography GC1-1581 article 2020 ftdoajarticles https://doi.org/10.3390/jmse8090709 2022-12-31T06:23:47Z A multidisciplinary study was conducted in order to investigate the environmental factors affecting the planktonic foraminiferal and pteropod communities of the south Aegean Sea. Aspects of the Late Quaternary paleoceanographic evolution were revealed by means of quantitative analyses of planktonic foraminiferal and pteropod assemblages (including multivariate statistical approach; principal component analysis (PCA)), the oxygen (δ 18 O) and carbon (δ 13 C) isotopic composition of planktonic foraminifera and related paleoceanographic (planktonic paleoclimatic curve (PPC), productivity (E-index), stratification (S-index), seasonality) indices, extracted by the gravity core KIM-2A derived from the submarine area between Kimolos and Sifnos islands. Focusing on the last ~21 calibrated thousands of years before present (ka BP), cold and eutrophicated conditions were identified during the Late Glacial period (21.1–15.7 ka BP) and were followed by warmer and wetter conditions during the deglaciation phase. The beginning of the Holocene was marked by a climatic amelioration and increased seasonality. The more pronounced environmental changes were identified during the deposition of the sapropel sublayers S1a (9.4–7.7 ka BP) and S1b (6.9–6.4 ka BP), with extremely warm and stratified conditions. Pteropod fauna during the sapropel deposition were recorded for the first time in the south Aegean Sea, suggesting arid conditions towards the end of S1a. Besides sea surface temperature (SST), which shows the highest explanatory power for the distribution of the analyzed fauna, water column stratification, primary productivity, and seasonality also control their communities during the Late Quaternary. Article in Journal/Newspaper Planktonic foraminifera Directory of Open Access Journals: DOAJ Articles Journal of Marine Science and Engineering 8 9 709 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
paleoceanographic evolution planktonic foraminifera pteropods stable isotopes sea surface temperature (SST) stratification Naval architecture. Shipbuilding. Marine engineering VM1-989 Oceanography GC1-1581 |
spellingShingle |
paleoceanographic evolution planktonic foraminifera pteropods stable isotopes sea surface temperature (SST) stratification Naval architecture. Shipbuilding. Marine engineering VM1-989 Oceanography GC1-1581 Christina Giamali George Kontakiotis Efterpi Koskeridou Chryssanthi Ioakim Assimina Antonarakou Key Environmental Factors Controlling Planktonic Foraminiferal and Pteropod Community’s Response to Late Quaternary Hydroclimate Changes in the South Aegean Sea (Eastern Mediterranean) |
topic_facet |
paleoceanographic evolution planktonic foraminifera pteropods stable isotopes sea surface temperature (SST) stratification Naval architecture. Shipbuilding. Marine engineering VM1-989 Oceanography GC1-1581 |
description |
A multidisciplinary study was conducted in order to investigate the environmental factors affecting the planktonic foraminiferal and pteropod communities of the south Aegean Sea. Aspects of the Late Quaternary paleoceanographic evolution were revealed by means of quantitative analyses of planktonic foraminiferal and pteropod assemblages (including multivariate statistical approach; principal component analysis (PCA)), the oxygen (δ 18 O) and carbon (δ 13 C) isotopic composition of planktonic foraminifera and related paleoceanographic (planktonic paleoclimatic curve (PPC), productivity (E-index), stratification (S-index), seasonality) indices, extracted by the gravity core KIM-2A derived from the submarine area between Kimolos and Sifnos islands. Focusing on the last ~21 calibrated thousands of years before present (ka BP), cold and eutrophicated conditions were identified during the Late Glacial period (21.1–15.7 ka BP) and were followed by warmer and wetter conditions during the deglaciation phase. The beginning of the Holocene was marked by a climatic amelioration and increased seasonality. The more pronounced environmental changes were identified during the deposition of the sapropel sublayers S1a (9.4–7.7 ka BP) and S1b (6.9–6.4 ka BP), with extremely warm and stratified conditions. Pteropod fauna during the sapropel deposition were recorded for the first time in the south Aegean Sea, suggesting arid conditions towards the end of S1a. Besides sea surface temperature (SST), which shows the highest explanatory power for the distribution of the analyzed fauna, water column stratification, primary productivity, and seasonality also control their communities during the Late Quaternary. |
format |
Article in Journal/Newspaper |
author |
Christina Giamali George Kontakiotis Efterpi Koskeridou Chryssanthi Ioakim Assimina Antonarakou |
author_facet |
Christina Giamali George Kontakiotis Efterpi Koskeridou Chryssanthi Ioakim Assimina Antonarakou |
author_sort |
Christina Giamali |
title |
Key Environmental Factors Controlling Planktonic Foraminiferal and Pteropod Community’s Response to Late Quaternary Hydroclimate Changes in the South Aegean Sea (Eastern Mediterranean) |
title_short |
Key Environmental Factors Controlling Planktonic Foraminiferal and Pteropod Community’s Response to Late Quaternary Hydroclimate Changes in the South Aegean Sea (Eastern Mediterranean) |
title_full |
Key Environmental Factors Controlling Planktonic Foraminiferal and Pteropod Community’s Response to Late Quaternary Hydroclimate Changes in the South Aegean Sea (Eastern Mediterranean) |
title_fullStr |
Key Environmental Factors Controlling Planktonic Foraminiferal and Pteropod Community’s Response to Late Quaternary Hydroclimate Changes in the South Aegean Sea (Eastern Mediterranean) |
title_full_unstemmed |
Key Environmental Factors Controlling Planktonic Foraminiferal and Pteropod Community’s Response to Late Quaternary Hydroclimate Changes in the South Aegean Sea (Eastern Mediterranean) |
title_sort |
key environmental factors controlling planktonic foraminiferal and pteropod community’s response to late quaternary hydroclimate changes in the south aegean sea (eastern mediterranean) |
publisher |
MDPI AG |
publishDate |
2020 |
url |
https://doi.org/10.3390/jmse8090709 https://doaj.org/article/476fd972198344bc8861d8449b62e5a2 |
genre |
Planktonic foraminifera |
genre_facet |
Planktonic foraminifera |
op_source |
Journal of Marine Science and Engineering, Vol 8, Iss 709, p 709 (2020) |
op_relation |
https://www.mdpi.com/2077-1312/8/9/709 https://doaj.org/toc/2077-1312 doi:10.3390/jmse8090709 2077-1312 https://doaj.org/article/476fd972198344bc8861d8449b62e5a2 |
op_doi |
https://doi.org/10.3390/jmse8090709 |
container_title |
Journal of Marine Science and Engineering |
container_volume |
8 |
container_issue |
9 |
container_start_page |
709 |
_version_ |
1766169902184398848 |