Distribution et caractéristiques des associations d’ostracodes au Pléistocène supérieur et Holocène au niveau de la marge orientale du détroit de Gibraltar (mer d’Alboran, Maroc)

Hmaidi, Abdellah El; Moumni, Bouchta El; Nachite, Driss; Bekkali, Ratiba; Gensous, Bernard

doi:10.1016/j.revmic.2008.05.001

Cited by 16 publications

(11 citation statements)

References 5 publications

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“…Siani et al, 2001). Radiocarbon ages were calibrated to calendar years using CALIB 6.0.1 and the IntCal09 calibration curve (Reimer et al, 2009 (Bonaduce et al, 1975;Carbonel, 1980;Ruiz et al, 1997;Hajjaji et al, 1998;Abad et al, 2005;El Hmaidi et al, 2010;Nachite et al, 2010). The autochthonous group is represented by the upper neritic and bathyal species, considered as in situ and not affected by transport.…”

Section: Micropaleontological and Geochemical Analysesmentioning

confidence: 99%

“…Callistocythere sp. and H. videns also indicate the infralittoral zone (Carbonel, 1980;Ruiz et al, 1997;Abad et al, 2005;El Hmaidi et al, 2010;Nachite et al, 2010). In the Mediterranean Sea, Callistocythere sp.…”

Section: Ecological Significance Of Ostracodsmentioning

confidence: 99%

“…Deep-water assemblages often contain reworked fauna from the continental shelf. Allochthonous ostracods are common in deep-water assemblages (Peypouquet, 1979;Peypouquet and Nachite, 1984;Passlow, 1994;Zhou and Zhao, 1999;El Hmaidi et al, 2010) and can be used as an indicator of the intensity of downslope sediment transport (Passlow, 1994).…”

Section: Introductionmentioning

confidence: 99%

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Levantine intermediate water hydrodynamic and bottom water ventilation in the northern Tyrrhenian Sea over the past 56,000 years: New insights from benthic foraminifera and ostracods

Minto’o

Bassetti

Morigi

et al. 2015

Quaternary International

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Foraminifera and ostracods have been quantitatively studied in core MD01-2472, from the upper continental\ud slope (at water depth of 501 m), to evaluate their relationship with bottom water condition\ud variability and decipher the control of the Levantine IntermediateWater (LIW) current on benthic faunas.\ud The occurrence of reworked ostracod species (originating from the continental shelf) and, the presence of\ud shallow water Elphidium/Ammonia benthic foraminifera are used to estimate the degree of along-slope\ud transport at the core site. This has revealed two intervals of along-slope transport also associated with\ud coarse-grained contourite deposits, deposited during the YD and HS2 episodes. Planktonic-benthic\ud foraminiferal and ostracod assemblages reflect climate oscillations. Peaks of the polar planktonic Neogloboquadrina\ud pachyderma (left-coiling S) may be used to identify Heinrich Events. Interstadials are\ud marked by abundant ostracod species such as Paracypris sp., Argilloecia acuminata, and Cytheropteron\ud alatum and the presence of benthic foraminifera like Bulimina marginata, Bulimina costata and Gyroidina\ud altiformis. The BeA and Holocene are characterized by abundant warm water species of planktonic\ud foraminifera and by the ostracod species Polycope sp. We hypothesize that there is relationship between\ud LIW intensification during cold rapid climate events and benthic fauna assemblage variations due to\ud changes in: 1) bottom water ventilation; and 2) the export of nutrients and/or sediment particles by\ud bottom currents

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Section: Micropaleontological and Geochemical Analysesmentioning

confidence: 99%

Section: Ecological Significance Of Ostracodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Levantine intermediate water hydrodynamic and bottom water ventilation in the northern Tyrrhenian Sea over the past 56,000 years: New insights from benthic foraminifera and ostracods

Minto’o

Bassetti

Morigi

et al. 2015

Quaternary International

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“…Except for C. lobatulus, which is preferentially found in a high-energy shallowwater setting (e.g., Bartels-Jónsdóttir et al, 2006;Javaux and Scott, 2003;Milker et al, 2011;Murray, 2006), foraminifera assemblage is mainly composed of species thriving under a stable environment characterized by marine-derived organic matter input and well-oxygenated sediments (e.g., De Rijk et al, 2000;Debenay and Redois, 1997;Fontanier et al, 2008;Goineau, 2011;Goineau et al, 2011Goineau et al, , 2015Mendes et al, 2004;Mojtahid et al, 2009). Clusters B and F are mainly composed of shallow infra-littoral ostracods (e.g., Bonaduce et al, 1975;Frenzel and Boomer, 2005;Guernet et al, 2003;Ruiz et al, 1997;Zaïbi et al, 2012), whereas Cluster C is primarily made of circa-littoral and epi-bathyal species (e.g., Bonaduce et al, 1975;El Hmaidi et al, 2010;Yamaguchi and Norris, 2012).…”

Section: Interval 2 (Ca 83-45 Ka Cal Bp)mentioning

confidence: 99%

“…8). This cluster is constituted by the shallow infra-littoral Paradoxostoma and Loxoconcha species (Bonaduce et al, 1975;El Hmaidi et al, 2010) and by the epibathyal Argilloecia species. Argilloecia sp., in the Rhône subaqueous delta, appears to be tolerant to fluvial influence and potentially responds to organic matter supply (Fanget et al, 2013b).…”

Section: Record Of Holocene Cold Events (Crs)mentioning

confidence: 99%

Sedimentary archives of climate and sea-level changes during the Holocene in the Rhône prodelta (NW Mediterranean Sea)

et al. 2016

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Abstract. A 7.38 m long sediment core was collected from the eastern section of the Rhône prodelta (NW Mediterranean) at 67 m water depth. A multi-proxy study (including sedimentary facies, benthic foraminifera, ostracods, and clay mineralogy) provides a multi-decadal to century-scale record of climate and sea-level changes during the Holocene. The early Holocene is marked by alternative silt and clay layers interpreted as distal tempestites deposited in a context of rising sea level. This interval contains shallow infra-littoral benthic meiofauna (e.g., Pontocythere elongata, Elphidium spp., Quinqueloculina lata) and formed between ca. 20 and 50 m water depth. The middle Holocene (ca. 8.3 to 4.5 ka cal. BP) is characterized, at the core site, by a period of sediment starvation (accumulation rate of ca. 0.01 cm yr −1 ) resulting from the maximum landward shift of the shoreline and the Rhône outlet(s). From a sequence stratigraphic point of view, this condensed section, about 35 cm thick, can be identified on seismic profiles as a maximum flooding surface that marks the transition between delta retrogradation and delta progradation. The transition between the early Holocene deposits and the middle Holocene condensed section is marked by a gradual change in all proxy records. Following the stabilization of sea level at a global scale, the late Holocene is marked by the establishment of prodeltaic conditions at the core site, as shown by the lithofacies and by the presence of benthic meiofauna typical of the modern Rhône prodelta (e.g., Valvulineria bradyana, Cassidulina carinata, Bulimina marginata). Several periods of increased fluvial discharge are also emphasized by the presence of species commonly found in brackish and shallow-water environments (e.g., Leptocythere spp.

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Late glacial and Holocene Ostracoda from the Melilla cold-water coral mound field

2018

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The ostracod assemblages from sediment core TTR17-401G recovered from the Melilla cold-water coral mound field in the eastern Alboran Sea spanning the last 13 ka are analysed quantitatively, taxonomically and palaeoecologically. The core can be subdivided in three distinct assemblages linked to environmental shifts during the Younger Dryas and the Bølling-Allerød interstadial. A total of 9 ostracod species is recorded, Paracypris polita is dominant throughout the core. Common accessory taxa Cytherella robusta, Echinocythereis vidua and Macromckenziea ligustica characterize the well-oxygenated ostracod assemblage 2 affected by the Younger Dryas. Favourable growth conditions for ostracods during the latter are indicated by large-sized Krithe praetexta specimens.

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Distribution et caractéristiques des associations d’ostracodes au Pléistocène supérieur et Holocène au niveau de la marge orientale du détroit de Gibraltar (mer d’Alboran, Maroc)

Cited by 16 publications

References 5 publications

Levantine intermediate water hydrodynamic and bottom water ventilation in the northern Tyrrhenian Sea over the past 56,000 years: New insights from benthic foraminifera and ostracods

Levantine intermediate water hydrodynamic and bottom water ventilation in the northern Tyrrhenian Sea over the past 56,000 years: New insights from benthic foraminifera and ostracods

Sedimentary archives of climate and sea-level changes during the Holocene in the Rhône prodelta (NW Mediterranean Sea)

Late glacial and Holocene Ostracoda from the Melilla cold-water coral mound field

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