کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8086088 | 1521802 | 2018 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effects of seawater acidification and alkalization on the farmed seaweed, Pyropia haitanensis (Bangiales, Rhodophyta), grown under different irradiance conditions
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
انرژی های تجدید پذیر، توسعه پایدار و محیط زیست
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Effects of seawater acidification and alkalization on the farmed seaweed, Pyropia haitanensis (Bangiales, Rhodophyta), grown under different irradiance conditions Effects of seawater acidification and alkalization on the farmed seaweed, Pyropia haitanensis (Bangiales, Rhodophyta), grown under different irradiance conditions](/preview/png/8086088.png)
چکیده انگلیسی
The thalli of Pyropia haitanensis were cultured under different pH levels (7.8, 8.2, and 9.0) and under decreased (60â¯Î¼molâ¯photonsâ¯mâ2â¯sâ1) and ambient (300â¯Î¼molâ¯photonsâ¯mâ2â¯sâ1) levels of light irradiance conditions, aiming to examine the influence of different pH and decreased light irradiance on this farmed seaweed species in Southern China. Either the decreased (7.8) or increased (9.0) pH values in seawater inhibited nitrogen uptake rates and nitrate reductase activity of P. haitanensis. The capacity of nitrogen uptake and maximum inorganic carbon (Ci)-saturated photosynthetic rate (Vmax) were reduced in P. haitanensis grown at decreased irradiance compared with the algae grown at ambient irradiance. Decreased pH had no significant effect on the algal growth and photosynthesis under ambient light conditions, but it significantly inhibited growth and photosynthesis under decreased light conditions. Increased seawater pH resulted in decreased relative growth rate (RGR), maximal quantum yield of photosystem II (Fv/Fm), and non-photochemical quenching (NPQ) of P. haitanensis when the algae were grown under ambient light conditions. However, a slight decrease was observed with decreasing growth irradiances. Collectively, our results indicated that either the changed pH (acidification and alkalization) or reduced irradiance displayed a disadvantageous influence on nitrogen metabolism of P. haitanensis. We suggested that, during P. haitanensis mariculture, the decreased light irradiance resulting from increasing algal mats density alleviates the negative effects of seawater alkalization, but it aggravates the adverse effects of seawater acidification on the growth and photosynthesis of the algae.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Algal Research - Volume 31, April 2018, Pages 413-420
Journal: Algal Research - Volume 31, April 2018, Pages 413-420
نویسندگان
Heng Jiang, Dinghui Zou, Wenyong Lou, Yayun Deng, Xiaopeng Zeng,