Minggu, 16 Maret 2014

Fossil pollen collection technique

Fossil pollen collection technique

 

SayaPoker.com Agen Judi Poker dan Domino Online Terpercaya Indonesia Two important things must be considered in the fossil pollen collection are :
not contaminated
representative


Work and data required at the time of sample collection :
labeling of samples
records the state of the sample
data for the preparation of stratigraphic columns and cross sections
description of the vegetation at the sampling locations ( including the types of plants that are in bloom )
altitude


Sampling techniques :
a. continuous
b . discontinuous


Sampler or a tool for sediment sampling :
a. Hiller sampler
b . Russian sampler

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c . Dachnowsky sampler
d . Livingstone sampler
e . Reissinger sampler


2 . Pollen collection technique of the present


The sources of pollen and spores present ( non- fossil ) :


a. from the air ( pollen rain ) : obtained from three different groups , namely : pollen in the air contained in static air conditions ; borne pollen in the air that passes through a cross section per unit time , and deposition of pollen from the air , or pollen that settles on horizontal surfaces at specified time intervals .
b . of plants that are still alive .

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Trap pollen ( pollen trap ) for sampling at ground level :


a. petridish coated filter paper and soaked in glycerin .
b . cup of glycerin filled glass material in volume ketch ! .
c . Tauber trap

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