کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5764027 | 1625799 | 2017 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Photosynthetically-mediated calcite and phosphorus precipitation by submersed aquatic vascular plants in Lake Pleasant, Pennsylvania
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
علوم آبزیان
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Photosynthetically-mediated calcite precipitation by phytoplankton and charophytes has been shown to be a significant pathway for the removal of epilimnetic Ca and P in hardwater lakes, but the role of submersed aquatic vascular plants has not been examined. We measured calcite precipitation on 5 species of submersed aquatic vascular plants in moderately hardwater Lake Pleasant semi-monthly during the growing season. Maximum mass-specific accumulation ranged from 22.9 mg Ca gâ1 leaf dry weight in Megalodonta Beckii to 176.3 mg Ca gâ1 leaf dry weight in Potamogeton Richardsonii. Analysis of the crude deposits gave mean Ca concentration of 318 mg gâ1 dry wt., and mean total P concentration of 169.8 μg gâ1 dry wt, however, only 38% of this total phosphorus was composed of chemical species specifically associated with Ca co-precipitation. We used whole-lake estimates of submersed aquatic vascular plant mass to calculate the mass of P co-precipitated with Ca. Results suggest that in spite of conspicuous precipitate on plants during midsummer in this lake, there is a negligible effect on epilimnetic P concentrations.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Aquatic Botany - Volume 143, October 2017, Pages 36-40
Journal: Aquatic Botany - Volume 143, October 2017, Pages 36-40
نویسندگان
M.L. Ostrofsky, C. Miller,