欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
为剖析长江口邻近海域春季硅藻藻华后期藻类沉降与底层水体缺氧现象之间的关系，作者于2011年春季，在长江口南部赤潮区采集了表层沉积物样品，并通过高效液相色谱法（HPLC），对浮游植物色素进行了分析。结果表明，硅藻藻华发生后，表层沉积物中叶绿素a（Chl a）、岩藻黄素（Fuco）和19’-丁酰氧基岩藻黄素（But-Fuco）含量有显著增加，高值区主要分布在调查海域东南侧50 m 等深线外侧，与底层低氧水体分布区基本吻合。因此，硅藻藻华后沉降的藻类对于该海域夏季缺氧区的形成应具有一定作用，其具体过程和机制仍有待于研究。
英文摘要：
To reveal the relationship between microalgae deposition and bottom-water hypoxia in the red-tide zone of the Changjiang River estuary and the adjacent coastal waters, surface sediment samples were collected in spring of 2011, and phytoplankton pigments in surface sediment were analyzed with high performance liquid chromatography （HPLC）. It is found that content of Chlorophyll a （Chl a）, fucoxanthin （Fuco） and 19＇-butanoy-loxyfucoxanthin （But-Fuco） in surface sediment increased significantly after the bloom of diatoms. The region with high concentration of Chl a, Fuco and But-Fuco in surface sediment distributed mainly in the southeastern part of the investigation area, similar to the area with low level of dissolved oxygen in seawater at the bottom. It is concluded that deposited algae after the diatom bloom is important for the formation of summer hypoxic zone in this region. However, detailed processes and mechanisms still need further studies in the future.
同期刊论文项目
同项目期刊论文
Distribution patterns of phytoplankton in the Changjiang River estuary and adjacent waters in spring
Development of 17 novel polymorphic microsatellites in the small yellow croaker Larimichthys polyact
Application of an integrated methodology for eutrophication assessment: a case study in the Bohai Se
Long-term changes in sedimentary diatom assemblages and their environmental implications in the Chan
The migratory history of anadromous and non-anadromous tapertail anchovy Coilia nasus in the Yangtze
Species- and tissue-specific mercury bioaccumulation in five fish species from Laizhou Bay in the Bo
Temporal distribution of bacterial community structure in the Changjiang Estuary hypoxia area and th
Tissue-specific bioaccumulation and oxidative stress responses in juvenile Japanese flounder (Parali
Molecular Evidence for Multiple Paternity in a Population of the Viviparous Tule Perch Hysterocarpus
Basin-scale variation in planktonic ciliate distribution: A detailed temporal and spatial study of t
Application of otolith shape analysis for stock discrimination and species identification of five go
Environmental significance of biogenic elements in surface sediments of the Changjiang Estuary and i
Nutrient fluxes in the Changjiang River estuary and adjacent waters---- a modified box model approac
Key nitrogen biogeochemical processes revealed by the nitrogen isotopic composition of dissolved nit
A Rare Phaeodactylum tricornutum Cruciform Morphotype: Culture Conditions, Transformation and Unique
Geochemical records of decadal variations in terrestrial input and recent anthropogenic eutrophicati
Influences of external nutrient conditions on the transcript levels of a nitrate transporter gene in
Fractionation, sources and budgets of potential harmful elements in surface sediments of the East Ch
Air-sea CO2 exchange process in the southern Yellow Sea in April of 2011, and June, July, October of
A numerical study on seasonal variations of the thermocline in the South China Sea based on the ROMS
Survival, growth, food availability and assimilation efficiency of the sea cucumber Apostichopus jap
Elemental signature in otolith nuclei for stock discrimination of anadromous tapertail anchovy (Coil
Responses of Phosphate Transporter Gene and Alkaline Phosphatase in Thalassiosira pseudonana to Phos
期刊信息
位置：