Dinoflagellate cyst assemblages in recent sediments of Visakhapatnam harbour, east coast of India: Influence of environmental characteristics

被引：17
|
作者：
D'Silva, Maria Shamina [1 ]
Anil, Arga Chandrashekar [1 ]
Sawant, Subhash Shivram [1 ]
机构：
[1] Natl Inst Oceanog, CSIR, Panaji 403004, Goa, India
来源：
MARINE POLLUTION BULLETIN | 2013年 / 66卷 / 1-2期
关键词：
Dinoflagellate cyst; Sediment; Environmental characteristics; Harmful species; Protoceratium reticulatum; Visakhapatnam harbour; RECENT MARINE-SEDIMENTS; PROTOCERATIUM-RETICULATUM; SURFACE SEDIMENTS; TOKYO-BAY; SPATIAL-DISTRIBUTION; WATER-QUALITY; YOKOHAMA-PORT; WEST-COAST; POLLUTION; EUTROPHICATION;
D O I：
10.1016/j.marpolbul.2012.11.012
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
The distribution and abundance of dinoflagellate cysts in recent sediments from Visakhapatnam harbour, east coast of India was investigated and compared with sediment characteristics and physico-chemical variables of the overlying water column. The cyst abundance varied from 11 to 1218 cysts g(-1) dry sediment. Changes in the cyst assemblages from phototrophic to heterotrophic forms were observed from inner to outer harbour stations, and related to changes in environmental characteristics. Enhanced cyst production of potentially harmful dinoflagellate Protoceratium reticulatum was recorded in the inner harbour stations with higher nutrient concentrations. Protoperidinium cysts were the most diversified group, and were dominant in the outer harbour stations having improved water conditions and circulation. This study points out the potential use of dinoflagellate cyst populations in providing information on environmental conditions. (C) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码：59 / 72
页数：14
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