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Advances in Cenozoic Paleoceanography with Emphasis in Micropaleontological Proxies

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Special Issue Editors

Dr. Iván Hernández-Almeida

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Guest Editor

Department of Earth Sciences, ETH Zurich, Zurich, Switzerland
Interests: paleoceanography; paleoclimate; micropaleontology; transfer functions; paleoecology

Dr. Paula Diz Ferreiro

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Guest Editor

Department of Marine Geosciences. Faculty of Marine Sciences, University of Vigo, Vigo, Spain
Interests: paleoceanography; paleoclimate; paleoecology; foraminifera

Special Issue Information

Dear Colleagues,

Understanding the ocean’s role in past climate is of fundamental importance for climate change predictions. Paleoceanographic proxies from marine sediment records provide essential information to understand and reconstruct Earth’s past history, including climate change, oceanography, and biogeochemical cycles in the ocean. Among those, micropaleontological proxies across different time-scales allow reconstructing different physico-chemical ocean variables and understanding biota response to environmental changes, as well as evolutionary adaptations to a changing world.

This special issue aims to publish innovative studies that include methods for tracing past water masses and hydrographic changes during the Cenozoic, reconstructing ocean-biosphere-atmosphere-climate interactions and applied biostratigraphy, using micropaleontological proxies, and/or their isotopic and geochemical composition. The areas of major interest for this special issue are, but not limited to:

Evolutionary biology, biometry, biodiversity and molecular phylogeny
Biostratigraphy
Biogeochemistry and biomineralization
Paleoecology and past biotic-abiotic interactions
Modern field observations: water samples, sediment traps, and surface sediment coring studies
Calibration and validation of new proxies

This special issue of Geosciences seeks original and innovative research papers devoted to reaffirm the central role that micropaleontology continues to play across a broad range of fields, including paleoceanography.

We especially welcome submissions related to the keywords presented at the bottom of this page. Authors are invited to send to the Guest Editor a title, list of authors and abstract of the manuscript they would like to submit to this Special Issue.

Dr. Iván Hernández-Almeida
Dr. Paula Diz Ferreiro
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Geosciences is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 1800 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

Marine sediment cores
Micropaleontology
Paleoecology
Stable Isotopes
Biogeochemistry
Biostratigraphy
Evolution and biodiversity
Cenozoic
Modern monitoring
Calibration and validation

Published Papers (2 papers)

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Research

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22 pages, 3058 KiB

Open AccessArticle

Demise of the Planktic Foraminifer Genus Morozovella during the Early Eocene Climatic Optimum: New Records from ODP Site 1258 (Demerara Rise, Western Equatorial Atlantic) and Site 1263 (Walvis Ridge, South Atlantic)

by Roberta D’Onofrio, Valeria Luciani, Gerald R. Dickens, Bridget S. Wade and Sandra Kirtland Turner

Geosciences 2020, 10(3), 88; https://doi.org/10.3390/geosciences10030088 - 27 Feb 2020

Cited by 15 | Viewed by 3904

Abstract

Here we present relative abundances of planktic foraminifera that span the Early Eocene Climatic Optimum (EECO) at Ocean Drilling Program (ODP) Site 1258 in the western equatorial Atlantic. The EECO (~53.3−49.1 Ma) represents peak Cenozoic warmth, probably related to high atmospheric CO₂, and when planktic foraminifera, a dominant component of marine sediment, exhibit a major biotic response. Consistent with previous work, the relative abundance of the genus Morozovella, which dominated early Paleogene tropical-subtropical assemblages, markedly and permanently declined from a mean percentage of ~32% to less than ~7% at the beginning of the EECO. The distinct decrease in Morozovella abundance occurred at Site 1258 within ~20 kyr before a negative excursion in δ¹³C records known as the J event and which defines the beginning of EECO. Moreover, all morozovellid species except M. aragonensis dropped in abundance permanently at Site 1258, and this is related to a reduction in test-size. Comparing our data with that from other locations, the remarkable switch in planktonic foraminifera assemblages appears to have begun first with unfavourable environmental conditions near the Equator and then extended to higher latitudes. Several potential stressors may explain observations, including some combination of algal photosymbiont inhibition (bleaching), a sustained increase in temperature, or an extended decrease in pH. Full article

(This article belongs to the Special Issue Advances in Cenozoic Paleoceanography with Emphasis in Micropaleontological Proxies)

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Review

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13 pages, 2587 KiB

Open AccessReview

The North Pacific Diatom Species Neodenticula seminae in the Modern and Holocene Sediments of the North Atlantic and Arctic

by Alexander Matul and Galina Kh. Kazarina

Geosciences 2020, 10(5), 173; https://doi.org/10.3390/geosciences10050173 - 09 May 2020

Cited by 2 | Viewed by 2794

Abstract

The paper presents micropaleontological information and observations of the North Pacific diatom species Neodenticula (N.) seminae (Simonsen and Kanaya) Akiba and Yanagisawa in the surface and Holocene sediments from the North Atlantic, Nordic, and Arctic Seas. The compilation of previously published data and new findings of this study on N. seminae in the surface sediments shows its broad occurrence as a usual element of the modern diatom microflora in the Nordic, Labrador, and Irminger Seas. The recent migration of N. seminae from its native area, the Subarctic Pacific, reflects the oceanographic shift in the late 1990s as greater transport of the warmer surface Pacific water to the Arctic causes Arctic sea-ice reduction. Micropaleontological studies of the Holocene sediments document the multiple events of N. seminae appearance in the Arctic during the latest Pleistocene and Holocene warming intervals. These observations can suggest the events of the increased influence of the North Pacific water on the Arctic environments in the past, not just during the recent warm climate amplification. Full article

(This article belongs to the Special Issue Advances in Cenozoic Paleoceanography with Emphasis in Micropaleontological Proxies)

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