کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8885638 | 1626895 | 2018 | 14 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Harmful epiphytic dinoflagellate assemblages on macrophytes in the Gulf of Tunis
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
علوم آبزیان
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![عکس صفحه اول مقاله: Harmful epiphytic dinoflagellate assemblages on macrophytes in the Gulf of Tunis Harmful epiphytic dinoflagellate assemblages on macrophytes in the Gulf of Tunis](/preview/png/8885638.png)
چکیده انگلیسی
The spatio-temporal distribution of epiphytic and planktonic microalgae coupled with environmental factors was investigated for a one-year period in the Gulf of Tunis (northeastern Tunisia). Harmful microalgae assemblages were dominated by three toxic epiphytic dinoflagellates: Ostreopsis sp., Prorocentrum lima and Coolia monotis. They were observed, both on macrophytes (1.03â¯Ãâ¯105 cells gâ1 FW ; 1.3â¯Ãâ¯104 cells gâ1 FW and 865 cells gâ1 FW, respectively) and in the water column (2.35â¯Ãâ¯104 cells Lâ1; 3.72â¯Ãâ¯103 cells Lâ1; 1.04â¯Ãâ¯103 cells Lâ1, respectively). Species abundances decreased with depth and maximum concentrations were found in shallow waters (0.5-1â¯m). The highest species abundance was registered both on macroalgae and seagrass with no special preference observed for either of these substrates. Redundancy analyses (RDA) show significant changes in these species abundances according to sites and seasons. The proliferation of Ostreopsis sp. is widespread in summer, when water temperature is warm, and especially in bay zones. The occurrence of P. lima and C. monotis blooms was mainly correlated to nutrients. In this study, macrophyte beds in the Gulf of Tunis were a reservoir of potentially toxic species that could pose a real threat, both to ecosystems and to public health.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Harmful Algae - Volume 77, July 2018, Pages 29-42
Journal: Harmful Algae - Volume 77, July 2018, Pages 29-42
نویسندگان
Mohamed Amine Hachani, Amel Dhib, Afef Fathalli, Boutheina Ziadi, Souad Turki, Lotfi Aleya,