In the periods of peak zooplankton abundance , that is , in the late spring and in the summer , haney recorded maximum daily com - munity grazing rates , for nutrient - poor lakes and bog lakes , respectively , of 6 . 6 percent and 114 percent of daily phytoplankton production 在浮游动物数量激增的高峰期,亦即在春季后期以及夏季,哈尼记录了最大程度上的每日群落食草比率,对于营养物不充足的湖和沼泽湖而言,分别为每日浮游植物繁殖量的6 . 6 %和114 %
5 at the nautical school sampling station ( 24 hour monitoring station ) , the highest average density of microzooplankton was recorded at sunset ( 154 . 91 ind . / l ) , successively , at sunrise ( 146 . 63 ind . / l ) and noon ( 93 . 09 ind . / l ) , the lowest was at midnight ( 77 . 31 ind . / l ) 5 、在航校昼夜监测站,小型浮游动物的平均丰度以傍晚最高,其次是黎明和正午,午夜时密度最低,分别为154 . 91个升、 146 . 63个升、 93 . 09个升和77 . 31个升。
But the gut evacuation rates did not vary with the experimental temperature and body size . copepods usually performed feeding rhythms with maximum level at midnight and their feeding activities changed with the tide rhythms at the estuary area . in the laizhou bay , the daily grazing rate of the copepod population on phytoplankton was 20 . 81 ? 98 . 35 % of the primary production and 2 . 53 ? 6 . 36 % of the phytoplankton standing stock in summer 现场测得的桡足类摄食率结果表明,在莱州湾,夏季桡足类群体的日摄食量占初级生产力的20 . 81 ? 98 . 35 % ,占浮游植物现存量的2 . 53 ? 6 . 36 % ,潍河口,河口外浮游动物优势种群体的日摄食量占初级生产力的32 . 28 % ,占浮游植物现存量的14 . 12 % ,河口内对初级生产力的摄食压力< 3 % ,日摄食量小于浮游植物现存量的1 % 。
Results as following : in the east china sea and the yellow sea , zooplankton showed higher diversity in the low latitude and warm species occurred mainly in the south of 31 n , five communities were distinguished by twinspan method , based on data of species composition and environmental factors . they are : i ) yellow sea neritic community ( f ) with indicator species of labidocera euchaeta in autumn and centropages mcmurrichi in spring ; ii ) yellow sea central community ( hc ) with indicator species of themisto gracilipes , calanus sinicus and euphausia pacifica , the latter two species occurred only in autumn ; iii ) east china sea continental shelf mixed water community ( k ) with indicator species such as rhincalanus cornutus and pterosagitta draco which were confined in waters with high temperature and salinity , iv ) yellow sea and east china sea mixed water community ( he ) and v ) east china sea inshore mixed water community ( m ) 根据twinspan等多元分析结果,比较各组群的浮游动物种类组成和环境特征,可将东、黄海浮游动物群落分为5个,黄海沿岸群落( f ) ,指示种秋季为真刺唇角水蚤,春季为墨氏胸刺水蚤;黄海中部群落( hc ) ,指示种以细长脚虫戎为主,秋季还有中华哲水蚤和太平洋磷虾;东海外陆架高温高盐群落( k ) ,指示种为角锚哲水蚤、飞龙翼箭虫等多种狭布型暖水种类;黄东海交汇区群落( he )和东海近岸混合群落( m ) ,两群落包含多种生态类型种类,其中温带近岸低盐种在he中较多,广布性暖水种在m群落中较多。
During the above procedure , if there are no hosts fish , shrimp for parasites , parasites wont be able to survive . so , amazerm can prevent parasitic infection . amazerm not only cultivates large quantities of microorganisms but also increases the healthy biological bloom . the metabolic production of microorganism will be utilized by algae , and then the microorganism and algae will be utilized by plankton 良益菌于池中,除培养大量微生物群外,相形地提高池中生物量产能,微生物代谢物为藻类吸收利用,微生物及藻类被浮游动物利用,浮游动物再被较大型底栖性动物利用,形成之食物?关系提供鱼虾丰富而多样性之天然饲料生物,健全池中鱼虾之体质,增加抗病能力。