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PLANT POPULATIONS
Výukový materiál EK 01 - 02
Tvůrce: Mgr. Šárka Vopěnková
Tvůrce anglické verze: ThMgr. Ing. Jiří Foller
Projekt: S anglickým jazykem do dalších předmětů
Registrační číslo: CZ.1.07/1.1.36/03.0005
Tento projekt je spolufinancován ESF a SR ČR
2014
PLANT POPULATIONS
population:
 a configuration of individuals, which grow on
one habitat
 they are of identical genetic origin
 origin – three ways:
 a) cell division
 cyanophytes, algae
 very fast
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PLANT POPULATIONS
after successful spread of the populations
the most advantageous combination of
diaspore formation and vegetative spreading
 e.g. hairy reed grass

plant populations have features proving
 a) at the level of individuals
 b) at the level of groups

PLANT POPULATIONS
b) from a part separated from the mother
organism
 spore, seed, fruit, bulb
 c) vegetative spreading
 posterity connected with rootstocks > couchgrass
 posterity connected with offshoots >
strawberry
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PLANT POPULATIONS
features of the population:
 a) density
 expressed by the number of individuals
on a square unit – on 1 m2 or1 hectare
 it depends on the size of plants
 appearance in the horizontal structure
of the population
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PLANT POPULATIONS
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b) natality
it expresses natural grow ability of certain
population
reproducing vegetative and generative
it is characterized by the number of new
individuals a time unit
in ideal conditions > plenitude of nutrients,
space, absence of competitive relations
natality much higher than can be observed in
the nature
ROSTLINNÉ POPULACE
against development of population
counterworks so called environmental
resistance > it includes mainly
influences of other organisms and limited
nutrient sources
 c) mortality
 dying of individuals in the population
 it expresses the change of amount of
individuals in time
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PLANT POPULATIONS
structure of the population evaluated by:
 size classes
 > criterion is also height of the
overground part
 age classes
 > on the basis of the age of individuals
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PLANT POPULATIONS
PLANT POPULATIONS
WORKSHEET
DESCRIBE THE PICTURES
SOURCES

KINCL, Lubomír, Miloslav KINCL a Jana JAKRLOVÁ. Biologie rostlin:
pro 1. ročník gymnázií. 4., přeprac. vyd. Praha: Fortuna, 2006, 302 s.
ISBN 80-716-8947-5