کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2069668 1401152 2016 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Phytoplankton pigments and functional community structure in relation to environmental factors in the Pearl River Estuary
ترجمه فارسی عنوان
رنگ دانه های فیتوپلانکتون ها و ساختار جامعه کاربردی در رابطه با عوامل زیست محیطی در رودخانه پرل خور
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات اقیانوس شناسی
چکیده انگلیسی

SummaryTwo cruises were undertaken in the Pearl River Estuary in November 2011 and March 2012 to analyze the distribution of phytoplankton pigments and to define the relationships of pigment indices and functional community structure with environmental factors. Among 22 pigments, 17 were detected by high-performance liquid chromatography. Chlorophyll a was found in all samples, with a maximum of 7.712 μg L−1 in spring. Fucoxanthin was the most abundant accessory pigment, with mean concentrations of 2.914 μg L−1 and 0.207 μg L−1 in spring and autumn, respectively. Chlorophyll a, chlorophyll c2, fucoxanthin, diadinoxanthin, and diatoxanthin were high in the northern or northwest estuary in spring and in the middle-eastern and northeast estuary in autumn. Chlorophyll b, chlorophyll c3, prasinoxanthin, and peridinin were similarly distributed during the two cruises. Chlorophyll a and fucoxanthin positively correlated with nutrients in spring, whereas 19′-hex-fucoxanthin and 19′-but-fucoxanthin negatively correlated. The biomass proportion of microphytoplankton (BPm) was higher in spring, whereas that of picophytoplankton (BPp) was higher in autumn. BPm in spring was high in areas with salinity <30, but BPp and the biomass proportion of nanophytoplankton (BPn) were high in areas with salinity >30. BPm increased but BPn reduced with the increase in nutrient contents. By comparison, BPp reduced with the increase in nutrient contents in spring, but no relationship was found between BPp and nutrient contents in autumn. The ratios of photosynthetic carotenoids to photoprotective carotenoids in the southern estuary approached unity linear relationship in spring and were under the unity line in autumn.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Oceanologia - Volume 58, Issue 3, July–September 2016, Pages 201–211
نویسندگان
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