کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4379875 | 1303946 | 2014 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Allelopathic control of freshwater phytoplankton by the submerged macrophyte Najas minor All
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موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
بوم شناسی، تکامل، رفتار و سامانه شناسی
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چکیده انگلیسی
Water blooms in eutrophic waters have been serious environmental problems in recent years. To explore effective measures to control this issue has been an interest of research. Our current study was designed to investigate the effects of submerged macrophyte Najas minor All. exudates on the growth of four freshwater phytoplankton species, toxic Microcystis aeruginosa, toxic Anabaena flos-aquae, Chlorella pyrenoidosa and Scenedesmus obliquus as well as natural phytoplankton assemblages of pond water. We also conducted a reciprocal response between N.âminor and toxic M.âaeruginosa using coexistence experiments. Our results showed that: (1) N.âminor exudates significantly inhibited the growth of toxic M.âaeruginosa, toxic A.âflos-aquae and S.âobliquus, with M.âaeruginosa being the most sensitive, followed by toxic A.âflos-aquae, and S.âobliquus the least. N.âminor exudates did not show inhibitory effect on C.âpyrenoidosa; (2) N.âminor and toxic M.âaeruginosa have reciprocal inhibitory effect, and the allelopathic interactions between the two different organisms are density dependent and affect their mutual growth; (3) N.âminor exudates also can induce a decrease in chlorophyll a content and an inhibition in total dehydrogenase activity of the phytoplankton assemblages. Our present studies indicated the submerged macrophyte N.âminor might be a potential useful tool to control phytoplankton blooms.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Acta Ecologica Sinica - Volume 34, Issue 6, December 2014, Pages 351-355
Journal: Acta Ecologica Sinica - Volume 34, Issue 6, December 2014, Pages 351-355
نویسندگان
Tingting Zhang, Lu Liu, Xiaohui Yang, Shengjuan Zhang, Wentong Xia, Cheng Li,