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| 1 | 南沙群岛海域夏季营养盐对浮游植物生长的限制显示文摘为探讨氮和磷对浮游植物生长的限制作用,2013年夏季在南沙群岛海域西南大陆架S1站(9°30′N, 109°30′E)和曾母暗沙附近S2站(4°30′N, 109°30′E)进行了添加N、P营养盐的现场加富实验。结果显示:加富N和N+P后,叶绿素a(Chl-a)含量显著增长(P〈0.05),其中,S1站点叶绿素a从初始的0.05 mg·m^-3分别达到0.29和0.80 mg·m^-3;S2站点叶绿素a从初始的0.09 mg·m^-3则分别达到0.79和1.02 mg·m^-3,说明添加N或N+P可以促进浮游植物增长。在加富P后,2个站点的叶绿素a浓度均未显著增加,说明单独添加磷不能促进浮游植物的增长。限制因子分析表明,S1站点的浮游植物生长具N限制,而S2站点浮游植物生长的首要限制元素为N,其次为P。水体中N/P范围为5~25时最适应浮游植物生长。相关性分析结果表明,N/P值与Chl-a浓度和浮游植物的生长速度(R)无显著相关性,表明该2个站点水体的N/P值不能单独控制浮游植物的生长。 | 陈露 戴明 肖雅元 刘永 陈作志 林华剑 魏小岚 李纯厚 | 2015 | 生态学杂志2015,34,5: | 5 |
| 2 | 西沙永兴岛附近海域秋末氮磷营养盐加富对浮游植物生长限制的影响显示文摘为探讨西沙海域氮(N)和磷(P)对浮游植物生长限制的影响,2014年秋末在永兴岛附近海域S0站(111°59.843'E,17°30.364'N)进行了N、P营养盐的现场添加实验。添加氮的浓度依次为4μmol·L-1、8μmol·L-1、16μmol·L-1、32μmol·L-1,添加磷的浓度依次为0.25μmol·L-1、0.5μmol·L-1、1μmol·L-1、2μmol·L-1,添加氮和磷的浓度组合依次为4μmol·L-1+0.5μmol·L-1(N∶P=8∶1)、8μmol·L-1+2μmol·L-1(N∶P=4∶1)、16μmol·L-1+0.25μmol·L-1(N∶P=64∶1)、32μmol·L-1+1μmol·L-1(N∶P=32∶1)。结果显示:加富N+P后,叶绿素a浓度显著增长(P〈0.05),其中,32μmol·L-1 NO3--N+1μmol·L-1 PO4 3-P添加组和4μmol·L-1NO3--N+0.5μmol·L-1 PO4 3--P添加组叶绿素质量浓度从初始的0.06mg·m-3分别达到1.71mg·m-3和1.10mg·m-3,说明添加N/P范围在8-32之间可以促进浮游植物生长.在单独加富N和P后,叶绿素a浓度均无显著的增加(P〉0.05),说明单独添加N和P不能促进浮游物生长.限制因子分析表明,S0站点的浮游植物生长为N+P共同限制. | 陈露 李纯厚 戴明 刘永 陈作志 肖雅元 林琳 | 2016 | 南方水产科学2016,12,4: | 4 |
| 3 | 南沙海域夏季氮磷添加模拟实验中浮游植物群落的变化显示文摘为探讨夏季南沙海域氮(N)、磷(P)加富对浮游植物群落结构的影响,2013年夏季在南沙海域西南大陆架S1站(9°30'N,109°30'E)和曾母暗沙附近S2站(4°30'N,109°30'E)进行了多组添加N、P营养盐的现场加富实验。通过实验和数据分析对2个站位的浮游植物种类组成、丰度、多样性指数变化和群落更替情况进行了研究。结果表明:1)营养加富后浮游植物种类数增加;2)各加富组随着添加浓度增高,Shannon-Wiener多样性指数下降;3)从添加单一营养盐到复合营养盐组,浮游植物群落的优势类群出现了从甲藻到硅藻的演替;4)营养盐加富在短期内会使浮游植物丰度快速增加,但超过一定水平后,其促进作用减弱甚至抑制甲藻的生长;5)随着各组营养盐添加浓度的增高,加N、加P组的种群总丰度和甲藻门、硅藻门丰度变化不大,加N+P组的总丰度和硅藻门丰度显著上升,甲藻门丰度显著下降,说明N和P共同限制了浮游植物生长。 | 陈露 李纯厚 魏小岚 刘永 陈作志 戴明 肖雅元 林琳 | 2015 | 南方水产科学2015,11,5: | 4 |
| 4 | Composition and Distribution of Planktonic Ciliates in the Southern South China Sea During Late Summer: Comparison Between Surface and 75 m Deep Layer显示文摘Ciliates are very important components in most marine ecosystem.They are trophic link between the microbial food web and grazing food chain.In this study,ciliates were collected from 11 sites in the southern South China Sea(SCS) during August 25 to September 28,2011.Their composition and distribution at the surface and 75 m deep depth of the ocean were studied.A total of 30 species belonging to 22 genera were identified,and 22 species of 15 genera were Tintinnids.Eutintinnus fraknoii and E.stramentus were the most common species.The other dominants were strombidiids ciliates including Strombidium conicum and S.globosaneum,which were followed by the tide form,Mesodinium pulex.Ciliates abundance ranged from 46 ind L^(-1) to 368 ind L^(-1) in the open sites,46–368 ind L^(-1) at surface and 73–198 ind L^(-1) at 75 m deep layer.In the Yongshu reef,ciliates abundance ranged from 167 ind L^(-1) to 365 ind L^(-1) in the water column,similar to that in Sanya coral reef waters.Ciliates composition showed obvious difference between surface and 75 m deep layer at station S2(P < 0.05),while no similar result was observed at other sites.At 75 m deep layer,salinity was negatively related to mixed layer depth(P < 0.05),but positively to chlorophyll a concentration(P < 0.05),indicating that the change of vertical mixing in water column influenced vertical distribution of ciliates in the southern SCS. | LIU Huaxue SHEN Pingping LI Chunhou CHEN Zuozhi QI Zhanhui HUANG Honghui | 2016 | Journal of Ocean University of China2016,15,1: | 3 |
| 5 | Progress in studies on the diversity and distribution of planktonic ciliates (Protista, Ciliophora) in the South China Sea显示文摘As an important component of microzooplankton,ciliates play a key role in matter cycling and energy fow in marine planktonic ecosystems.Studies of planktonic ciliate have been extensive in the South China Sea(SCS)over the last 20 years.Here,we summarize the recent progress on the diversity and distribution of this group in the SCS.This includes that in:(1)the waters covering the intertidal zone of the northern SCS,most studies have focused on taxonomy,with 71 species collected,identifed,and described(with~40%new species);(2)neritic waters distribution patterns have been examined at a regional scale,with ciliates displaying signifcant spatial variations and seasonal dynamics;(3)in oceanic waters,there has been a focus on ciliate distribution in north,centre,and south regions,where mesoscale physical processes play roles in controlling distributions,and noticeable vertical variations occur.More generally,some studies examine the infuences of environment variables on ciliates,and indicate that chlorophyll a concentration is commonly positively correlated with ciliates abundance.In addition,some signifcant fndings are summarized,the limitations of past studies are considered,and recommendations are made for future work on planktonic ciliates in SCS. | Weiwei Liu Mann Kyoon Shin Zhenzhen Yi Yehui Tan | 2021 | Marine Life Science & Technology2021,3,1: | 1 |
| 6 | 南海南部悬浮颗粒物脂肪酸组成显示文摘中国水产科学研究院南海水产研究所'南锋号'科考船在2012年2月22日—3月20日调查期间,对南海南部海域0 m、75 m和150 m层水体悬浮颗粒物进行了脂肪酸(FA)组成的研究。FA含量在表层、75 m层和150 m层的变化范围分别为9.9—15.65μg/L,10.45-14.45μg/L和9.65—16.45μg/L。FA与叶绿素a的比值垂向变化非常大,在表层和150 m层都大于70,而在75 m层小于30(除A7)。悬浮颗粒物的FA组成以饱和脂肪酸和单不饱和脂肪酸为主,而多不饱和脂肪酸含量较低。饱和脂肪酸主要包括C16:0和C18:0,其次是C12:0,单不饱和脂肪酸主要包括C14:1n3、C16:1n7和C16:1n9,多不饱和脂肪酸主要为C18:2n6和C22:2n6。主成分分析表明,第一主成分主要与C16:0、C18:0、C20:0等正相关,可认为第一主成分主要表征浮游植物和碎屑,而第二主成分所表征的可能与浮游动物等有关的信息。悬浮颗粒物的脂肪酸标记物中,C16:1n7/C16:0和∑C16:1/∑FA之间呈显著正相关,同时C16:1n7/C16:0与∑C18/∑FA呈显著负相关,将C16:1n7/C16:0和C16:1/∑FA结合起来适宜于指示硅藻类的组成,∑C18/∑FA可用来指示甲藻类组成。 | 刘华雪 柯常亮 李纯厚 廖秀丽 黄洪辉 | 2014 | 生态学报2014,34,10: | 1 |