@misc{10481/71676,
year = {2021},
url = {http://hdl.handle.net/10481/71676},
abstract = {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
Zoophycos ichnofacies with a higher presence of Zoophycos 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 deepwater gateway are proposed to relate to the topographical variations of the Antarctic Bottom Water
and its influence on the hydrodynamic regime, nutrient transport, etc.},
organization = {The bathymetric position index analysis and bottom substrates classification were carried
out within framework of the state assignment of IO RAS (Theme No. 0128-2021-0016). The landscape
mapping, benthic foraminiferal and hydrological studies were supported by the Russian Science
Foundation (grant No. 19-17-00246). Research by RT was funded by Projects CGL2015-66835-P
and PID2019-104625RB-100 (Secretaría de Estado de I+D+I, Spain), B-RNM-072-UGR18 (FEDER
Andalucía), and P18-460 RT-4074 (Junta de Andalucía), and Scientific Excellence Unit UCE-2016-05
(Universidad de Granada). Work by TG was done within the framework of “The Drifters” Research
Group at Royal Holloway University of London (RHUL).},
publisher = {MDPI},
keywords = {Habitat mapping},
keywords = {Bathymetric position index},
keywords = {GIS},
keywords = {Trace fossils},
keywords = {Benthic foraminifera},
keywords = {Computed tomography},
keywords = {Bottom substrate},
keywords = {Water temperature},
keywords = {Suspended particulate matter},
keywords = {Antarctic Bottom Water},
title = {Landscape Mapping, Ichnological and Benthic Foraminifera Trends in a Deep-Water Gateway, Discovery Gap, NE Atlantic},
doi = {10.3390/geosciences11110474},
author = {Dorokhova, Evgenia V. and Dorokhov, Dmitry V. and Kuleshova, Liubov A. and Mena, Anxo and Rodríguez Tovar, Francisco J. and Glazkova, Tatiana and Krechik, Viktor A.},
}