Globigerina bulloides (original) (raw)
Globigerina bulloides d'Orbigny, 1826, è una specie estinta di foraminifero planctonico eterotrofio del genere Globigerina, con un'ampia distribuzione nella zona eufotica oceanica.
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| dbo:abstract | Globigerina bulloides is a species of heterotrophic planktonic foraminifer with a wide distribution in the photic zone of the world's oceans. It is able to tolerate a range of sea surface temperatures, salinities and water densities, and is most abundant at high southern latitudes (up to 40° S), certain high northern latitudes (up to 80° N), and in low-latitude upwelling regions. The density or presence of G. bulloides may change as a function of phytoplankton bloom successions, and they are known to be most abundant during winter and spring months. Like other planktonic foraminifera, G. bulloides carbonate tests found in marine sediments obtained from ocean cores can be used to reconstruct climatic histories, and to align marine sediment cores with one another or with astronomical cycles. In this vein, oxygen isotopic analyses of these forams from drill cores in the North Atlantic have helped precisely date the timing of the onset of northern hemisphere glaciations in the late Pliocene, 2.5–3 million years ago. Magnesium to calcium ratios are also used in G. bulloides to reconstruct temperature histories in the world's oceans, as experimental cultures of the foram have shown magnesium to calcium ratios to increase exponentially with increasing ocean temperature. At one point in the 19th century, researchers of the life-histories of this genus came to the firm conclusion that these animals lived and died in the ooze in which they were found, many hundreds of feet below sea level. This has now proved to have been an incorrect assumption, despite the thoroughness of those investigations. (en) Globigerina bulloides d'Orbigny, 1826, è una specie estinta di foraminifero planctonico eterotrofio del genere Globigerina, con un'ampia distribuzione nella zona eufotica oceanica. (it) |
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| dbo:wikiPageWikiLink | dbr:Calcium dbr:Δ18O dbr:Photic_zone dbr:Temperature_record dbr:Magnesium dbc:Species_described_in_1826 dbr:Alcide_d'Orbigny dbr:Heterotroph dbc:Globigerinina dbr:Test_(biology) dbr:Marine_sediment dbr:Plankton dbr:Pliocene dbr:Integrated_Ocean_Drilling_Program dbr:Axial_precession_(astronomy) dbc:Foraminifera_species dbr:Salinity dbr:Sea_surface_temperature dbr:Pliocene_climate dbr:Foraminifer dbr:Phytoplankton_bloom |
| dbp:authority | d'Orbigny, 1826 (en) |
| dbp:genus | Globigerina (en) |
| dbp:imageCaption | Rendering with spines (en) |
| dbp:species | bulloides (en) |
| dbp:wikiPageUsesTemplate | dbt:Reflist dbt:Short_description dbt:Speciesbox dbt:Taxonbar dbt:When dbt:Fossil_range dbt:Foraminifera-stub |
| dcterms:subject | dbc:Species_described_in_1826 dbc:Globigerinina dbc:Foraminifera_species |
| gold:hypernym | dbr:Foraminifer |
| rdf:type | dbo:Eukaryote |
| rdfs:comment | Globigerina bulloides d'Orbigny, 1826, è una specie estinta di foraminifero planctonico eterotrofio del genere Globigerina, con un'ampia distribuzione nella zona eufotica oceanica. (it) Globigerina bulloides is a species of heterotrophic planktonic foraminifer with a wide distribution in the photic zone of the world's oceans. It is able to tolerate a range of sea surface temperatures, salinities and water densities, and is most abundant at high southern latitudes (up to 40° S), certain high northern latitudes (up to 80° N), and in low-latitude upwelling regions. The density or presence of G. bulloides may change as a function of phytoplankton bloom successions, and they are known to be most abundant during winter and spring months. (en) |
| rdfs:label | Globigerina bulloides (en) Globigerina bulloides (it) |
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