INDAGINE SUL POPOLAMENTO ZOOPLANCTONICO DEL GOLFO DI SALò(lago di Garda,Brescia)

来源 :Natura Bresciana | 被引量 : 0次 | 上传用户:nightdie
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
Research on the zooplanktonic peopling of the Gulf of Salò(Lake Garda).The zooplankton of theGulf of Salò(Lake Garda)has been analysed during a period of some 18 months.The species captured are rat-her common and the global biomass not very consistent.From a zooplanktonic point of view,the situation isnot precarious.The problem of motor navigation could be taken into consideration. Research zooplanktonic peopling of the Gulf of Salò (Lake Garda) .The zooplankton of theGulf of Salò (Lake Garda) has been analyzed during aperiod of some 18 months.The species captured are rat-her common and the global biomass not very consistent.From a zooplanktonic point of view, the situation isnot precarious.The problem of motor navigation could be taken into consideration.
其他文献
随着科学技术的不断发展,机械制造工艺对各种机械、仪表中占有相当大比重的金属薄板冲压件提出了一些新的课题。最近出现的薄壁件高能成形法、各种提高板料成形中变形率的加
公车私用、超标配备、豪华装饰……长期以来,“车轮腐败”一直广受公众诟病。不久前,中共中央、国务院印发《党政机关厉行节约反对浪费条例》,改革公务用车实物配给方式,取消
加强沿海防护林建设,是沿海地区率先实现林业现代化的重要载体,是贯彻落实科学发展观,坚持以人为本的具体体现。审视中国地图,一只“雄鸡”被一片蔚蓝色的海洋包围着。海岸沿
超导技术的应用日趋广泛。本文提供了一种在远红外发生器中采用的超低温无磁钢CR_2,该钢种奥氏体组织稳定,在降温到4.2K时不发生α′马氏体的相变,并具有很低的导磁率(μ=1.0
In order to analyze the effects of the temperature gradient on moisture movement during the highly intensive microwave-vacuum drying, thermal diffusion of Masso
根据旧桥加固原则确定套拱法内套拱圈厚度。内套拱组合加固法是指在原拱圈下部增设一道协助原拱圈受力的新拱圈,即紧贴原拱圈底部用石砌一道新拱圈或用钢筋混凝土浇注一道新
十年风浪十年勇,十年风流十年情,十年风霜搏激流,十年英雄十年红! CBA十年,涌现出了无数的风流人物,但刘玉栋、胡卫东、姚明、王治郅、巩晓彬、孙军、唐正东这7个人的名字,是
2004年,在省委、省政府的正确领导和国家林业局的大力支持下,全省林业系统以贯彻落实中央和省委“两个”决定为主线,树立和落实科学的发展观,以建设京津绿色屏障、再造河北
本文介绍了真空感应加热淬火实验装置,并通过这一装置试验研究了GCr15、40Cr和4Cr13钢,在不同压强下进行加热淬火后,对试样的硬度、光亮度和变形的影响。此法的突出优点是对
Androsace hausmannii LeyboldReperti-Prov.di Bergamo,com.di Castione della Presolana;val Seriana,P.zo della Pre-solana,cima Centrale,vers.SE,m 2450 ca.;rupi cal