کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4379870 1303946 2014 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effects of nitrogen, phosphorus, iron and silicon on growth of five species of marine benthic diatoms
ترجمه فارسی عنوان
اثرات نیتروژن، فسفر، آهن و سیلیکون بر رشد پنج گونه از دیاتوم های بتونی دریایی
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک بوم شناسی، تکامل، رفتار و سامانه شناسی
چکیده انگلیسی

The effects of nitrogen, phosphorus, iron and silicon on growth of five species of marine benthic diatoms, namely Navicula patrickae, Nitzschia panduriformis, Navicula thienemannii, Nitzschia longissima and Navicula atomus were studied by single factor experiments and the optimal concentration ratios of the four nutrient elements beneficial for diatoms growth were screened out separately using the L9 (34) orthogonal design. The results highlighted that nitrogen, phosphorus, iron and silicon all had highly significant effects on growth of five diatoms while the diatoms growth rates reached the highest averagely in the 2nd to the 6th culture day. In addition, the optimal concentrations (mg/L) of four nutrients suitable for diatoms growth were found higher than that in f/2 medium except that Nitzschia longissima had the same concentration of nitrogen as that in f/2 medium which is optimal for growth. Moreover, the optimal growth concentrations of four elements for five diatoms varied in the range of 12.36–74.16 mg/L for nitrogen, 1.70–3.98 mg/L for phosphorus, 2.00–4.00 mg/L for iron, 23.01–69.03 mg/L for silicon, respectively. By means of the orthogonal test of four nutrients for five benthic diatoms, the optimal concentration ratios N:P:Fe:Si (mg/L) were obtained as follows: 74.16:2.27:3.33:23.01 for N. patrickae; 37.08:3.98:4.00:11.50 for N. panduriformis; 49.44:3.98:3.33:34.51 for N. thienemannii; 12.36:1.70:4.00:11.50 for N. longissima; 74.16:2.27:4.00:69.03 for N. atomus.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Acta Ecologica Sinica - Volume 34, Issue 6, December 2014, Pages 311–319
نویسندگان
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