This presentation is the property of its rightful owner.
Sponsored Links
1 / 23

第二章浮游动物生物量的测定方法 PowerPoint PPT Presentation


  • 79 Views
  • Uploaded on
  • Presentation posted in: General

第二章浮游动物生物量的测定方法. 水产饵料生物学. 概念. 现存量 (Standing crops) 是指单位面积或体积中所存在生物体的数量或重量,现存量若以个体数表示则可称为丰度 (abundance) 或(数量)密度( Density ),单位为 ind./L ;若以重量表示则可称为生物量( Biomass ,单位为 mg/L 。下面介绍浮游动物生物量测定的一般方法。. 一、采 集. 采集水体中的浮游动物有两种方法:一为用采水器采水后沉淀分离;二为用网过滤。前者适用于原生动物、轮虫等小型浮游动物;后者可用于枝角类、桡足类等甲壳动物。. (1) 设站.

Download Presentation

第二章浮游动物生物量的测定方法

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


3793870


3793870

  • (Standing crops)(abundance)Densityind./LBiomassmg/L


3793870


3793870

(1)


3793870

(2)

  • B(4)2312690.520.512420123410251I

  • 20()


3793870

(3)

  • Leptodora kindti)102030

  • l10-50


3793870

(4)

  • 80010004(9 10)910

  • 5%()


3793870

  • (1) 483050

  • (2) 2525


3793870

  • 0.1l


3793870

(1)

  • 0.1ml0.1 ml1020111010() (2) 10-5025(Eosin-Y)


3793870

  • 40-9075l


3793870

  • N= Vsn/VVa

  • N()

  • V()

  • VsVa()()

  • n

  • 1300.150130

  • 1

  • 3050/10.1=15 000 ()

  • 1

  • 3030/11=900

  • 20255080400,

  • 1

  • 50/202.5()

  • 480/20=24

  • 120


3793870

  • 85%l0-2050


3793870

(1)

  • 1()()


3793870

  • V=4/3r1r2r3

  • Vr11/2r3 1/2r21/2a=2r1b=2r2c=2r3, V=0.52abc.

  • 50a233.19mb115.52mc 86.8mb=0.65a,c=0.37aa

  • V=0.125a3=0.13a3

  • 1


3793870

(2)

  • Tranten1.5cm20cm1125


3793870

(3)

  • (sesten)


3793870

(4)

  • 0.1g


3793870

(1)

  • (70)24


3793870

2)

  • 4(1)()30-500.8mm150 ()242

  • LgW=blgL+a (W: L:)


3793870

  • a=-1.1326 (0.9312), b=3.2430 (2.7654) a=-1.0897 (0.8186)b=2.8032 (2.7472) a=-1.0813 (0.8962)b=2.3814 (2.3294); a=-1.3771 (0.6462) b=1.7300 (2.0411)


3793870

  • (D)V=1/6D3V1.05


3793870

  • 9.0622.0413855.0112.40810

  • 19829 1m1.6715.09; 13.56300500ml 2045-12mm5.01

  • 24. 3530


  • Login