Landscape Mapping, Ichnological and Benthic Foraminifera Trends in a Deep-Water Gateway, Discovery Gap, NE Atlantic

Multidisciplinary studies have allowed us to describe the abiotic landscapes and, thus, reveal the ichnological and benthic foraminifera trends in a deep-water gateway. Mesoscale landscape mapping is presented based on the bathymetric position index, substrate types and near-bottom water temperature...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Evgenia V. Dorokhova, Francisco J. Rodríguez-Tovar, Dmitry V. Dorokhov, Liubov A. Kuleshova, Anxo Mena, Tatiana Glazkova, Viktor A. Krechik
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	habitat mapping bathymetric position index GIS trace fossils benthic foraminifera computed tomography Geology QE1-996.5
Acceso en línea:	https://doaj.org/article/544820b8788443fc9e9ee3fd4b6bb3ff
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:544820b8788443fc9e9ee3fd4b6bb3ff
record_format	dspace
spelling	oai:doaj.org-article:544820b8788443fc9e9ee3fd4b6bb3ff2021-11-25T17:43:14ZLandscape Mapping, Ichnological and Benthic Foraminifera Trends in a Deep-Water Gateway, Discovery Gap, NE Atlantic10.3390/geosciences111104742076-3263https://doaj.org/article/544820b8788443fc9e9ee3fd4b6bb3ff2021-11-01T00:00:00Zhttps://www.mdpi.com/2076-3263/11/11/474https://doaj.org/toc/2076-3263Multidisciplinary studies have allowed us to describe the abiotic landscapes and, thus, reveal the ichnological and benthic foraminifera trends in a deep-water gateway. Mesoscale landscape mapping is presented based on the bathymetric position index, substrate types and near-bottom water temperature. Four sediment cores, retrieved from the entrance, centre and exit of the gap, were subject to computed tomography, ichnological and benthic foraminifera studies. A high diversity of abiotic landscapes in the relatively small area of Discovery Gap is detected and its landscape is characterized by 23 landscape types. The most heterogeneous abiotic factor is a topography that is associated with sediment patchiness and substrate variability. The ichnological and tomographical studies of the sediment cores demonstrate lateral and temporal differences in the macrobenthic tracemaker behaviour. The ichnofossils assemblage of the sediment core can be assigned to the <i>Zoophycos</i> ichnofacies with a higher presence of <i>Zoophycos</i> in the entrance site of the gap and during glacial intervals. Higher benthic foraminifera diversity and species richness during the Holocene are also registered in the southern part of the gap compared to the northern part. The spatial and temporal differences in macro-benthos behavior and benthic foraminifera distribution in the deep-water gateway are proposed to relate to the topographical variations of the Antarctic Bottom Water and its influence on the hydrodynamic regime, nutrient transport, etc.Evgenia V. DorokhovaFrancisco J. Rodríguez-TovarDmitry V. DorokhovLiubov A. KuleshovaAnxo MenaTatiana GlazkovaViktor A. KrechikMDPI AGarticlehabitat mappingbathymetric position indexGIStrace fossilsbenthic foraminiferacomputed tomographyGeologyQE1-996.5ENGeosciences, Vol 11, Iss 474, p 474 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	habitat mapping bathymetric position index GIS trace fossils benthic foraminifera computed tomography Geology QE1-996.5
spellingShingle	habitat mapping bathymetric position index GIS trace fossils benthic foraminifera computed tomography Geology QE1-996.5 Evgenia V. Dorokhova Francisco J. Rodríguez-Tovar Dmitry V. Dorokhov Liubov A. Kuleshova Anxo Mena Tatiana Glazkova Viktor A. Krechik Landscape Mapping, Ichnological and Benthic Foraminifera Trends in a Deep-Water Gateway, Discovery Gap, NE Atlantic
description	Multidisciplinary studies have allowed us to describe the abiotic landscapes and, thus, reveal the ichnological and benthic foraminifera trends in a deep-water gateway. Mesoscale landscape mapping is presented based on the bathymetric position index, substrate types and near-bottom water temperature. Four sediment cores, retrieved from the entrance, centre and exit of the gap, were subject to computed tomography, ichnological and benthic foraminifera studies. A high diversity of abiotic landscapes in the relatively small area of Discovery Gap is detected and its landscape is characterized by 23 landscape types. The most heterogeneous abiotic factor is a topography that is associated with sediment patchiness and substrate variability. The ichnological and tomographical studies of the sediment cores demonstrate lateral and temporal differences in the macrobenthic tracemaker behaviour. The ichnofossils assemblage of the sediment core can be assigned to the <i>Zoophycos</i> ichnofacies with a higher presence of <i>Zoophycos</i> in the entrance site of the gap and during glacial intervals. Higher benthic foraminifera diversity and species richness during the Holocene are also registered in the southern part of the gap compared to the northern part. The spatial and temporal differences in macro-benthos behavior and benthic foraminifera distribution in the deep-water gateway are proposed to relate to the topographical variations of the Antarctic Bottom Water and its influence on the hydrodynamic regime, nutrient transport, etc.
format	article
author	Evgenia V. Dorokhova Francisco J. Rodríguez-Tovar Dmitry V. Dorokhov Liubov A. Kuleshova Anxo Mena Tatiana Glazkova Viktor A. Krechik
author_facet	Evgenia V. Dorokhova Francisco J. Rodríguez-Tovar Dmitry V. Dorokhov Liubov A. Kuleshova Anxo Mena Tatiana Glazkova Viktor A. Krechik
author_sort	Evgenia V. Dorokhova
title	Landscape Mapping, Ichnological and Benthic Foraminifera Trends in a Deep-Water Gateway, Discovery Gap, NE Atlantic
title_short	Landscape Mapping, Ichnological and Benthic Foraminifera Trends in a Deep-Water Gateway, Discovery Gap, NE Atlantic
title_full	Landscape Mapping, Ichnological and Benthic Foraminifera Trends in a Deep-Water Gateway, Discovery Gap, NE Atlantic
title_fullStr	Landscape Mapping, Ichnological and Benthic Foraminifera Trends in a Deep-Water Gateway, Discovery Gap, NE Atlantic
title_full_unstemmed	Landscape Mapping, Ichnological and Benthic Foraminifera Trends in a Deep-Water Gateway, Discovery Gap, NE Atlantic
title_sort	landscape mapping, ichnological and benthic foraminifera trends in a deep-water gateway, discovery gap, ne atlantic
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/544820b8788443fc9e9ee3fd4b6bb3ff
work_keys_str_mv	AT evgeniavdorokhova landscapemappingichnologicalandbenthicforaminiferatrendsinadeepwatergatewaydiscoverygapneatlantic AT franciscojrodrigueztovar landscapemappingichnologicalandbenthicforaminiferatrendsinadeepwatergatewaydiscoverygapneatlantic AT dmitryvdorokhov landscapemappingichnologicalandbenthicforaminiferatrendsinadeepwatergatewaydiscoverygapneatlantic AT liubovakuleshova landscapemappingichnologicalandbenthicforaminiferatrendsinadeepwatergatewaydiscoverygapneatlantic AT anxomena landscapemappingichnologicalandbenthicforaminiferatrendsinadeepwatergatewaydiscoverygapneatlantic AT tatianaglazkova landscapemappingichnologicalandbenthicforaminiferatrendsinadeepwatergatewaydiscoverygapneatlantic AT viktorakrechik landscapemappingichnologicalandbenthicforaminiferatrendsinadeepwatergatewaydiscoverygapneatlantic
_version_	1718412041909174272

Landscape Mapping, Ichnological and Benthic Foraminifera Trends in a Deep-Water Gateway, Discovery Gap, NE Atlantic

Ejemplares similares