清澜港红树林浮游植物群落结构及水质对应分析

为了认清热带地区红树林中浮游植物群落结构和其关键水质影响因子,分别于2015年11月和2016年3月和8月在海南清澜港红树林进行样品采集,进行藻类鉴定和水质分析。结果表明:调查期间浮游植物7门,74属(种)。蓝藻门13属(种),硅藻门35属(种),绿藻门13属(种),隐藻门4属(种),裸藻门3属(种),甲藻门3属(种),金藻门3属(种)。八门湾优势种为硅藻门角毛藻(Chaetoceros)和硅藻门小环藻(Cyclotella sp.);红树林潮间带优势种为蓝藻门假鱼腥藻(Pseudoanabaena sp.)和甲藻门多甲藻(Peridinium);养殖水优势种为蓝藻门微囊藻(Microcystis)和隐藻门蓝隐藻(Chroomonas placiodea)。养殖水浮游植物密度最高,其次是八门湾和潮间带。除2016年3月份外,生物多样性指数均值由大到小顺序为:潮间带,八门湾,养殖水。2015年11月时氮为藻类生长限制因素,而2016年3月和8月时磷为大部水体限制因素。藻类与氮磷营养盐及金属离子密切相关,季节变化影响不明显。

Phytoplankton community structure and water quality correspondence analysis of mangrove forests in Qinglan Harbor

In order to study the phytoplankton community structure in mangrove forests in tropical areas and to explore the key water quality influencing factors. The samples were collected and analyzed from Qinglan Harbor of Hainan Province in November 2015, March 2016, and August 2016, respectively. The main conclusions are as follows: 7 species of phytoplankton and 74 genera(species)were identified during the investigation. 13 genera(Species)of phytoplankton, 3(genera)species of Phyllosticta, Chlorella 13 genera(species), Cryptophyta 4 genera(species), Ophiopogon 3(species), Chlorella 3 genera(species), Golden algae 3 genera(species). The dominant species of the Bamen Bay are Chaetoceros and Cyclotella sp. ; the dominant species of the mangrove intertidal zone are Pseudoanabaena sp. Alpystis, Microcystis and Chroomonas placiodea; and the dominant species of aquaculture water are Microcystis, and Chroomonas placiodea. The density of phytoplankton is the highest, followed by the Bamen Bay and the intertidal zone. Except in March, the order of the biodiversity index from high to low is: Intertidal zone, Octopus, and aquaculture water. Nitrogen was a limiting factor for algae growth in November 2015, and the one for most water bodies were phosphorus in March and August. Algae are mainly related to nitrogen and phosphorus nutrients and metal ions, and seasonal changes have no obvious effect on their relationship.