Consulta: creatorFacets:"Duran, R."
Registros recuperados: 3
Data/hora: 09/06/2024 09:43:09

Bacterial community structure along the Adour estuary (French Atlantic coast): influence of salinity gradient versus metal contamination
Provedor de dados: 5
Autores: Goni-urriza, M. S.; Point, D.; Amouroux, D.; Guyoneaud, R.; Donard, O. F. X.; Caumette, P.; Duran, R.
Salinity, other physico-chemical parameters and anthropogenic pollution are the main factors affecting bacterial communities in estuaries. We estimated the impact of these parameters on the distribution of bacterial communities in the Adour estuary (France), a moderately Polluted water body characterized by short residence times of particles and water and absence of a maximum turbidity zone. Eight stations were established along the salinity gradient from freshwater to marine conditions. For the 3 typical estuarine stations (water mixing zone), samples were collected at both low and high tide and at different depths according to the position of the halocline. This sampling strategy generated 35 samples with different degrees of mixing between fresh water...
Tipo: Text
Palavras-chave: Bacterial communities; Salinity gradient; Heavy metals; Estuary; Halocline; T-RFLP.
Ano: 2007
URL: https://archimer.ifremer.fr/doc/00249/35983/34517.pdf

Benthic foraminifera from the deep-water Niger delta (gulf of Guinea): Assessing present-day and past activity of hydrate pockmarks
Provedor de dados: 5
Autores: Fontanier, Christophe; Koho, K. A.; Goni-urriza, M. S.; Deflandre, Bruno; Galaup, S.; Ivanovsky, A.; Gayet, Nicolas; Dennielou, Bernard; Gremare, Antoine; Bichon, S.; Gassie, C.; Anschutz, P.; Duran, R.; Reichart, G. J.
We present ecological and isotopic (δ18O and δ13C) data on benthic foraminifera sampled from 4 deep-sea stations in a pockmark field from the deep-water Niger delta (Gulf of Guinea, Equatorial Atlantic Ocean). In addition, a series of sedimentological and (bio)geochemical data are shown to back up foraminiferal observations. All stations are located within 1.2 km of each other, so prevailing oceanographic conditions can be assumed to be similar at each site. Two of the sites (GMMC-01 and GMMC-02) are located in a pockmark (named “pockmark A”) where current methane seepages were recorded by ROV observations. A third station (GMMC-03) is located in the topographic depression interpreted as a collapsed pockmark (named “pockmark B”). The fourth site (GMMC-04)...
Tipo: Text
Palavras-chave: Niger delta; Hydrate pockmark; Foraminifera; Stable isotopes; Bacteria.
Ano: 2014
URL: http://archimer.ifremer.fr/doc/00211/32194/30628.pdf

Caractérisation préliminaire à partir de la lagune de Bizerte (Tunisie) des bactéries tolérantes aux hydrocarbures aromatiques polycliques (HAPS)
Provedor de dados: 20
Autores: Duran, R.; El Bour, M.; Ben Said, O.; Goni, M. S.; Dalleli, M.; Aissa, P.
م إنجاز هذه الدراسة  لهدف عَزَلَ بَكْتِيريَا قادرة على استعمالتم إنجاز هذه الدراسة  لهدف عَزَلَ بَكْتِيريَا قادرة على استعمال الهيدروكربنات و مقاومة للمعادن والمضادات الحيوية و في هذا الإطار  تم أخذ عينات من الماء و التربة على مستوى  16محطة موزعة ببحيرة بنزرت. كما تم عزل البكتيريا بطريقة الإثراء  باستعمال وسط مائي معدني زائد هيدروكربنات (fluoranthène) وقد توصلنا في عملية أولية من عزل 130  من الأجذال المختلفة من البكتيريا والتي تم تعريفها عبر الخاصيات  الشكلية و البيوكيميائية. وأثبتت  النتائج الأولية أن البكتيريا القادرة على استعمال الهيدروكربنات تنتمي لمجموعات مختلفةGram – و  Gram+  على التَّوَالِي بنسبتي 65% و 35 %. وتضم مجموعة البكتيريا من نوع العصيات  Gram – أكبر عدد من الأجذال المعزولة (74 %). ختاما نشير أن دراسة قدرة الأجذال على مقاومة المعادن...
Tipo: Journal Contribution
Palavras-chave: Bacteria; Antibiotics; Biodegradation; Control resistance; Heavy metals; Hydrocarbons; Pollution monitoring; Antibiotics; Biodegradation; Heavy metals; Hydrocarbons; Http://aims.fao.org/aos/agrovoc/c_492; Http://aims.fao.org/aos/agrovoc/c_9261; Http://aims.fao.org/aos/agrovoc/c_2223; Http://aims.fao.org/aos/agrovoc/c_3719.
Ano: 2007
URL: http://hdl.handle.net/1834/4257