胶州湾小型底栖生物的丰度和生物量   总被引：33，自引：5，他引：33  

张志南  周红  于子山  韩洁 《海洋与湖沼》2001,32(2):139-147

1995年 5月— 1 996年 1月 ,在胶州湾北部软底水域进行每 2月一次的调查。结果表明 ,小型底栖生物的年平均丰度为 1 .51× 1 0 6ind/m2 ,最高值出现在 95B1和 95B2站 ,分别为 2 .73× 1 0 6 和 2 .75× 1 0 6ind/m2 ,最低值出现在 95B3站 ,数量为 0 .46× 1 0 6ind/m2 。小型底栖生物的年平均生物量为 1 .32 g/m2 (干重 )。皮尔逊相关分析表明 ,小型生物的数量与以碳和氮表示的浮游植物的生物量呈负相关 ,相关系数分别为 - 0 .969和 - 0 .947(P <0 .0 5)。共鉴定出 1 4个小型生物类群。自由生活的海洋线虫占总数量的 86.6% ,底栖桡足类居第 2位 ,占总数量的 5.7%。按生物量 ,海洋线虫 (35.9% )、介形类 (32 .6% )、多毛类 (1 3.7% )和桡足类 (8.3% )共同构成小型动物的优势类群 ,80 %以上的小型生物分布在 0— 2cm以浅表层内。与国内外同类研究结果进行了比较 ,并对小型生物在胶州湾生态系中的作用进行了探讨  相似文献   

Macrobenthic community structure in the Changjiang Estuary and its adjacent waters in summer   总被引：4，自引：0，他引：4  

MENG Wei  LIU Lusan  ZHENG Binghui  LI Xinzheng  LI Zhongyu 《海洋学报(英文版)》2007,26(6):62-71

On the basis of data collected in the summer of 2006 from 27 sampling stations in the Changjiang Estuary and its adjacent waters, the ecological characteristics of macrobenthos and the relationship between the macrobenthos and the environmental factors were studied using hierarchical cluster and non-metric multidimensional scaling (MDS).The biomass, abundance, Shannon-Wiener's and Margalef's indices of the macrobenthos were presented. The results showed that a total of 253 macrobenthic species were found in the research region, and most of them belong to mollusks and polychaetes. The dominant species were Cossurella dimorpha, Eocylichna cylindrella, Episiphon kiaochowwanense, Nassarius semiplicatus, Ocstergrenia variabilis and Sternaspis scutata. The average abundance of the macrobenthos was (313.15±233.4) ind./m2, and the average biomass was (15.2±11.2)g/m2.The distribution patterns of the abundance and biomass of the macrobenthos were similar. The abundance and biomass in the area close to the estuary were lower than those from the area more distant to the estuary; the central part of the research region had higher abundance and biomass than other parts of the research region. In accordance with the results, four macrobenthic communities with distinct spatial differences were identified. The low abundance and biomass in the area close to the estuary should be caused by the high sedimentation rate. The statistical analysis indicated that the depth is the most important factor affecting the distribution of macrobenthos.  相似文献   

黄海多毛类异毛虫科初步研究     

赵晶  吴宝铃 《黄渤海海洋》1991,9(2):26-35

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小型底栖生物取样方法的研究   总被引：18，自引：0，他引：18  

张志南  钱国珍 《海洋湖沼通报》1990,(4):37-42

1984年4月在秦皇岛新煤码头砂质中潮带,用内径分别为1.8,2.2和3.4厘米的有机玻璃管各随机取样5次,芯样长28cm,所得海洋线虫密度(个/10厘米~2)分别为1497-2200,1262-1704和1162-1715单因子方差分析的结果表明,这三种内径的取样管所得海洋线虫计数的平均数之间没有显著的差异(F相似文献   

东山湾底栖生物生态研究     

张雅芝  胡家财 《台湾海峡》1997,16(4):441-448

本文分析了东山湾潮一带底栖生物种类的种类组成，数量分布，区系特征及其与环境因子的相互关系等生态特点。共鉴定了２４７种，大多数种类为热带，亚热带暖水肿和广温性种类平均总生物量为２１３．０ｇ／ｍ＾２，平均栖息密度为３１６．８个／ｍ＾２。底栖生物的分布与沉积物等环境因子关系密切。  相似文献   

珠江三角洲现代水下宏体底栖动物组合特征的初步研究   总被引：3，自引：0，他引：3  

周青伟  马绣同 《海洋地质与第四纪地质》1990,10(3):67-77

本文从属种组成及生态分布等方面对该三角洲四个基本单元环境中的底栖动物进行了系统组合分析,并探讨了水深、盐度及水动力等环境因子对底栖动物的控制作用。指出本区底栖动物的生态分布与环境一致;在属种上与水深盐度及沉积速率有关,即河口附近属种单调,随着远离河口水深、盐度的增加,沉积速率的降低而增多,至浅海陆架区丰富。  相似文献   

玉环坎门排污口邻近岩相潮间带生物分布特征   总被引：4，自引：2，他引：2  

高爱根  杨俊毅  曾江宁  王春生  胡锡钢  陈全震  朱根海 《海洋学研究》2004,22(4):24-30

2002年8月对玉环坎门污水处理厂排污口邻近岩相潮间带生物进行定性和定量样品采样,共鉴定出生物57种,其中大型藻类8种、多毛类动物2种、软体动物28种、甲壳类动物13种、棘皮动物1种和其它类动物5种。该排污口邻近两侧岩相潮间带平均生物量为1544.72g/m2,平均栖息密度为3948个/m2。位于排污口左侧的I断面生物量和栖息密度(2406.19g/m2和7415个/m2)明显高于II断面(683.27g/m2和484个/m2),I断面的生物多样性指数(0.91)和均匀度指数(0.39)小于II断面(1.80和0.68);两条断面生物量垂直分布均为中潮区>低潮区>高潮区,I断面栖息密度分布为中潮区>低潮区>高潮区,II断面栖息密度分布为中潮区>高潮区>低潮区。对排污口邻近岩相潮间带生物生态分析表明,该潮间带生物数量的水平分布受海岸开敞度的影响,而垂直分布则与潮区的不同和浪击度的强弱有关。  相似文献   

Effects of <Emphasis Type="Italic">Urechis unicinctus</Emphasis> juveniles on chemical characteristics of organically contaminated coastal sediment     

Kyoung Ho Kang  Zhifeng Zhang  Jae Min Kim  Seung Chun Seon  Mingyu Shao 《中国海洋大学学报(英文版)》2010,9(1):48-52

Biological activities of marine benthos such as burrowing and feeding may change sediment characteristics. We conducted three experiments to examine the potential of using juveniles of a spoon worm Urechis unicinctus to improve the quality of organically contaminated coastal sediment. Sediment samples were collected from a site that was heavily contaminated with organic matter (Seonso) and two sites that were clean (Myo-do, Dolsan-do). Urechis juveniles, obtained by artificial fertilization and cultured in the laboratory, were introduced to the sediment (weight 3 kg, depth 10 cm) at a density of 500 individuals per aquarium (length 50 cm, width 35 cm, height 30 cm) (Experiment 1), or at densities ranging from 100 to 900 individuals per beaker (Experiment 2). To examine how sediment contamination can be modified by the effects of Urechis, 500 individuals (per aquarium) were exposed to the Seonso contaminated sediment that had been mixed with 0–100% clean sand (Experiment 3). Each experiment lasted two months and sediment samples were collected every 15 d to determine the several indexes of sediment quality, which included acid volatile sulfide (AVS), chemical oxygen demand (COD) and total ignition loss (TIL). In Experiment 1, the existence of Urechis did not result in significant changes in quality indexes in the sediments collected from Myo-do, Dolsan-do. However, AVS, COD and TIL of the Seonso sediment all decreased significantly after co-incubation with Urechis juveniles for 30 to 45 d. Experiment 2 showed that a density of at least 300 juveniles per beaker was necessary to significantly reduce all three quality indexes, and the magnitude of reduction was positively correlated with juvenile density. Experiment 3 revealed that Urechis juveniles were effective in reducing the AVS, COD and TIL of the Seonso sediment that had been mixed with 60%, 80%, and 80% of clean sand, respectively. The results of the present study therefore indicated that juveniles of this spoon worm have the potential to be used to improve the quality of organically contaminated sediment in coastal waters.  相似文献   

夏季福建北部近岸海域大型底栖生物群落特征          下载免费PDF全文

樊立静  夏永健  李益云  凌信文 《海洋开发与管理》2017,34(2):85-91,100

文章以2013年8月福建北部近岸海域采集的大型底栖动物样品和环境资料为基础,分析其群落结构特征、受扰动情况和与环境因子的关系,并运用香浓-维纳(H′)多样性指数、AZTI海洋生物指数(AMBI)和多元AZTI生物指数(M-AMBI)对福建北部近岸海域生态环境质量状况进行评价。结果表明:2013年福建北部近岸海域大型底栖动物种类较少,生物密度和生物量偏低,物种小型化;调查海域底栖生物受干扰程度与环境压力梯度基本一致,宁德市因海洋开发活动较少沿岸海域底栖生物生态质量高于福州近岸海域;多样性指数H′、AMBI、M-AMBI等3种指数对福建北部近岸大型底栖生物评价结果不完全一致,AMBI指数、M-AMBI指数评价生态等级要高于多样性评价结果。  相似文献   

关于底栖组合应用中若干问题的讨论     

陈源仁 《成都地质学院学报》1992,19(4):16-27

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