کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6386716 | 1627281 | 2015 | 59 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Analysis of the hydrographic conditions and cyst beds in the San Jorge Gulf, Argentina, that favor dinoflagellate population development including toxigenic species and their toxins
ترجمه فارسی عنوان
تجزیه و تحلیل شرایط هیدروگرافی و تخت های کیست در خلیج سن جورج، آرژانتین، که به توسعه جمعیت دینوفلاژلد کمک می کند از جمله گونه های توکسین و سموم آنها
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
اقیانوس شناسی
چکیده انگلیسی
The overlay of cooler nutrient enriched Beagle-Magellan water with warmer nutrient depleted shelf water and a strong stratification of the water column in the San Jorge Gulf region, Argentina, coincided with relatively high dinoflagellate abundances in April 2012, up to 34,000 cells Lâ 1. This dinoflagellate proliferation was dominated by Ceratium spp., but environmental conditions also favored to a lesser amount the occurrence of toxigenic dinoflagellates, such as Alexandrium tamarense and Protoceratium reticulatum, whose toxins were hardly detected in any other areas along the expedition transect of the R/V Puerto Deseado between 38 and 56°S (Ushuaia-Mar del Plata) in March/April 2012. Generally vegetative cells of A. tamarense and P. reticulatum co-occurred with their respective phycotoxins in the water column and their cysts in the upper sediment layers. Two strains of A. tamarense were isolated from the bloom sample and morphologically characterized. Their PSP toxin profiles consisted of C1/2, gonyautoxins 1/4 and to a lesser amount of neosaxitoxin and confirmed earlier data from this region. The ratios between autotrophic picoplankton and heterotrophic bacteria were higher in shelf waters in the north than in Beagle-Magellan waters in the south of San Jorge Gulf.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Marine Systems - Volume 148, August 2015, Pages 86-100
Journal: Journal of Marine Systems - Volume 148, August 2015, Pages 86-100
نویسندگان
Bernd Krock, C. Marcela Borel, Facundo Barrera, Urban Tillmann, Elena Fabro, Gastón O. Almandoz, Martha Ferrario, John E. Garzón Cardona, Boris P. Koch, Cecilia Alonso, Rubén Lara,