Distribution of planktonic foraminifera in surface sediments of the Mediterranean Sea
The Mediterranean Sea is a partillay isolated ocean where excess evaporation over precipitation results in large east to west gradients in temperature and salinity. Recent planktonic foraminiferal distributions have been examined in 66 surface sediment samples from the Mediterranean Sea. In addition...
Main Author: | |
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Format: | Dataset |
Language: | English |
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PANGAEA
1978
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Online Access: | https://doi.pangaea.de/10.1594/PANGAEA.55624 https://doi.org/10.1594/PANGAEA.55624 |
id |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.55624 |
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record_format |
openpolar |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
ATL4647 ATL4648 ATL4650 ATL4654 ATL4655 ATL4656 ATL4657B ATL4659 ATL4660 ATL4665 ATL4670 ATL4673 ATL4675 ATL4687 ATL4693 ATL4694 ATLB520 ATLB529 Barcelona Coast Climatic Variability of the Mediterranean Paleo-circulation CLIVAMP CLIVAMPcruises Counting >250 µm fraction DEPTH sediment/rock Elevation of event Event label Globigerina bulloides Globigerina calida Globigerina digitata Globigerina falconensis Globigerinella aequilateralis Globigerinita glutinata Globigerinoides conglobatus Globigerinoides ruber Globigerinoides sacculifer Globorotalia inflata Globorotalia scitula Globorotalia truncatulinoides Globorotalia truncatulinoides sinistral Globoturborotalita rubescens Globoturborotalita tenella Hastigerina pelagica Izmit Bay Latitude of event Longitude of event Neogloboquadrina dutertrei Neogloboquadrina pachyderma dextral Neogloboquadrina pachyderma sinistral Neogloboquadrina sp. |
spellingShingle |
ATL4647 ATL4648 ATL4650 ATL4654 ATL4655 ATL4656 ATL4657B ATL4659 ATL4660 ATL4665 ATL4670 ATL4673 ATL4675 ATL4687 ATL4693 ATL4694 ATLB520 ATLB529 Barcelona Coast Climatic Variability of the Mediterranean Paleo-circulation CLIVAMP CLIVAMPcruises Counting >250 µm fraction DEPTH sediment/rock Elevation of event Event label Globigerina bulloides Globigerina calida Globigerina digitata Globigerina falconensis Globigerinella aequilateralis Globigerinita glutinata Globigerinoides conglobatus Globigerinoides ruber Globigerinoides sacculifer Globorotalia inflata Globorotalia scitula Globorotalia truncatulinoides Globorotalia truncatulinoides sinistral Globoturborotalita rubescens Globoturborotalita tenella Hastigerina pelagica Izmit Bay Latitude of event Longitude of event Neogloboquadrina dutertrei Neogloboquadrina pachyderma dextral Neogloboquadrina pachyderma sinistral Neogloboquadrina sp. Thunell, Robert C Distribution of planktonic foraminifera in surface sediments of the Mediterranean Sea |
topic_facet |
ATL4647 ATL4648 ATL4650 ATL4654 ATL4655 ATL4656 ATL4657B ATL4659 ATL4660 ATL4665 ATL4670 ATL4673 ATL4675 ATL4687 ATL4693 ATL4694 ATLB520 ATLB529 Barcelona Coast Climatic Variability of the Mediterranean Paleo-circulation CLIVAMP CLIVAMPcruises Counting >250 µm fraction DEPTH sediment/rock Elevation of event Event label Globigerina bulloides Globigerina calida Globigerina digitata Globigerina falconensis Globigerinella aequilateralis Globigerinita glutinata Globigerinoides conglobatus Globigerinoides ruber Globigerinoides sacculifer Globorotalia inflata Globorotalia scitula Globorotalia truncatulinoides Globorotalia truncatulinoides sinistral Globoturborotalita rubescens Globoturborotalita tenella Hastigerina pelagica Izmit Bay Latitude of event Longitude of event Neogloboquadrina dutertrei Neogloboquadrina pachyderma dextral Neogloboquadrina pachyderma sinistral Neogloboquadrina sp. |
description |
The Mediterranean Sea is a partillay isolated ocean where excess evaporation over precipitation results in large east to west gradients in temperature and salinity. Recent planktonic foraminiferal distributions have been examined in 66 surface sediment samples from the Mediterranean Sea. In addition to mapping the frequency distribution of 16 species, the faunal data has been subjected to cluster analysis, factor analysis and species diversity analysis. The clustering of species yields assemblages that are clearly temperature related. A warm assemblage contains both tropical and subtropical elements, while the cool assemblage can be subdivided into cool-subtropical, transitional and polar-subpolar groupings. Factor analysis is used to delineate the geographic distribution of four faunal assemblages. Factor 1 is a tropical-subtropical assemblage dominated by Globigerinoiden ruber. It has its highest values in the warmer eastern basin. Transitional species (Globorotalia inflata and Globigerina bulloides) dominate factor 2 with highest values occurring in the cooler western basin. Factor 3 reflects the distribution of Neogloboquadrina dutertrei and is considered to be salinity dependent. Subpolar species dominate factor 4 (Neoglobuquadrina pachyderma and G. bulloides), with highest values occurring in the northern part of the western basin where cold bottom water is presently being formed. The Shannon-Weiner index of species diversity shows that high diversity exists over much of the western basin and immediately east of the Strait of Sicily. This region is marked by equitable environmental conditions and relatively even distribution of individuals among the species. Conversely, in areas where temperature and salinity values are more extreme, diversity values are lower and the assemblages are dominated by one or two species. |
format |
Dataset |
author |
Thunell, Robert C |
author_facet |
Thunell, Robert C |
author_sort |
Thunell, Robert C |
title |
Distribution of planktonic foraminifera in surface sediments of the Mediterranean Sea |
title_short |
Distribution of planktonic foraminifera in surface sediments of the Mediterranean Sea |
title_full |
Distribution of planktonic foraminifera in surface sediments of the Mediterranean Sea |
title_fullStr |
Distribution of planktonic foraminifera in surface sediments of the Mediterranean Sea |
title_full_unstemmed |
Distribution of planktonic foraminifera in surface sediments of the Mediterranean Sea |
title_sort |
distribution of planktonic foraminifera in surface sediments of the mediterranean sea |
publisher |
PANGAEA |
publishDate |
1978 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.55624 https://doi.org/10.1594/PANGAEA.55624 |
op_coverage |
MEDIAN LATITUDE: 37.248242 * MEDIAN LONGITUDE: 17.249056 * SOUTH-BOUND LATITUDE: 31.820000 * WEST-BOUND LONGITUDE: -4.250000 * NORTH-BOUND LATITUDE: 41.967000 * EAST-BOUND LONGITUDE: 35.050000 * DATE/TIME START: 1956-07-01T00:00:00 * DATE/TIME END: 1965-08-06T00:00:00 * MINIMUM DEPTH, sediment/rock: 0 m * MAXIMUM DEPTH, sediment/rock: 0 m |
long_lat |
ENVELOPE(-4.250000,35.050000,41.967000,31.820000) |
geographic |
Western Basin |
geographic_facet |
Western Basin |
genre |
Neogloboquadrina pachyderma Planktonic foraminifera |
genre_facet |
Neogloboquadrina pachyderma Planktonic foraminifera |
op_source |
Supplement to: Thunell, Robert C (1978): Distribution of recent planktonic foraminifera in surface sediments of the Mediterranean Sea. Marine Micropaleontology, 3(2), 147-173, https://doi.org/10.1016/0377-8398(78)90003-8 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.55624 https://doi.org/10.1594/PANGAEA.55624 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.55624 https://doi.org/10.1016/0377-8398(78)90003-8 |
_version_ |
1766073071944335360 |
spelling |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.55624 2023-05-15T17:14:58+02:00 Distribution of planktonic foraminifera in surface sediments of the Mediterranean Sea Thunell, Robert C MEDIAN LATITUDE: 37.248242 * MEDIAN LONGITUDE: 17.249056 * SOUTH-BOUND LATITUDE: 31.820000 * WEST-BOUND LONGITUDE: -4.250000 * NORTH-BOUND LATITUDE: 41.967000 * EAST-BOUND LONGITUDE: 35.050000 * DATE/TIME START: 1956-07-01T00:00:00 * DATE/TIME END: 1965-08-06T00:00:00 * MINIMUM DEPTH, sediment/rock: 0 m * MAXIMUM DEPTH, sediment/rock: 0 m 1978-03-30 text/tab-separated-values, 1518 data points https://doi.pangaea.de/10.1594/PANGAEA.55624 https://doi.org/10.1594/PANGAEA.55624 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.55624 https://doi.org/10.1594/PANGAEA.55624 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Thunell, Robert C (1978): Distribution of recent planktonic foraminifera in surface sediments of the Mediterranean Sea. Marine Micropaleontology, 3(2), 147-173, https://doi.org/10.1016/0377-8398(78)90003-8 ATL4647 ATL4648 ATL4650 ATL4654 ATL4655 ATL4656 ATL4657B ATL4659 ATL4660 ATL4665 ATL4670 ATL4673 ATL4675 ATL4687 ATL4693 ATL4694 ATLB520 ATLB529 Barcelona Coast Climatic Variability of the Mediterranean Paleo-circulation CLIVAMP CLIVAMPcruises Counting >250 µm fraction DEPTH sediment/rock Elevation of event Event label Globigerina bulloides Globigerina calida Globigerina digitata Globigerina falconensis Globigerinella aequilateralis Globigerinita glutinata Globigerinoides conglobatus Globigerinoides ruber Globigerinoides sacculifer Globorotalia inflata Globorotalia scitula Globorotalia truncatulinoides Globorotalia truncatulinoides sinistral Globoturborotalita rubescens Globoturborotalita tenella Hastigerina pelagica Izmit Bay Latitude of event Longitude of event Neogloboquadrina dutertrei Neogloboquadrina pachyderma dextral Neogloboquadrina pachyderma sinistral Neogloboquadrina sp. Dataset 1978 ftpangaea https://doi.org/10.1594/PANGAEA.55624 https://doi.org/10.1016/0377-8398(78)90003-8 2023-01-20T07:35:51Z The Mediterranean Sea is a partillay isolated ocean where excess evaporation over precipitation results in large east to west gradients in temperature and salinity. Recent planktonic foraminiferal distributions have been examined in 66 surface sediment samples from the Mediterranean Sea. In addition to mapping the frequency distribution of 16 species, the faunal data has been subjected to cluster analysis, factor analysis and species diversity analysis. The clustering of species yields assemblages that are clearly temperature related. A warm assemblage contains both tropical and subtropical elements, while the cool assemblage can be subdivided into cool-subtropical, transitional and polar-subpolar groupings. Factor analysis is used to delineate the geographic distribution of four faunal assemblages. Factor 1 is a tropical-subtropical assemblage dominated by Globigerinoiden ruber. It has its highest values in the warmer eastern basin. Transitional species (Globorotalia inflata and Globigerina bulloides) dominate factor 2 with highest values occurring in the cooler western basin. Factor 3 reflects the distribution of Neogloboquadrina dutertrei and is considered to be salinity dependent. Subpolar species dominate factor 4 (Neoglobuquadrina pachyderma and G. bulloides), with highest values occurring in the northern part of the western basin where cold bottom water is presently being formed. The Shannon-Weiner index of species diversity shows that high diversity exists over much of the western basin and immediately east of the Strait of Sicily. This region is marked by equitable environmental conditions and relatively even distribution of individuals among the species. Conversely, in areas where temperature and salinity values are more extreme, diversity values are lower and the assemblages are dominated by one or two species. Dataset Neogloboquadrina pachyderma Planktonic foraminifera PANGAEA - Data Publisher for Earth & Environmental Science Western Basin ENVELOPE(-4.250000,35.050000,41.967000,31.820000) |