E COSYSTEMS Výukový materiál EK 01 - 16 Tvůrce: Ing. Marie Jiráková Tvůrce anglické verze: Mgr. Milan Smejkal Projekt: S anglickým jazykem do dalších předmětů.

Prezentace na téma: "E COSYSTEMS Výukový materiál EK 01 - 16 Tvůrce: Ing. Marie Jiráková Tvůrce anglické verze: Mgr. Milan Smejkal Projekt: S anglickým jazykem do dalších předmětů."— Transkript prezentace:

1 E COSYSTEMS Výukový materiál EK 01 - 16 Tvůrce: Ing. Marie Jiráková Tvůrce anglické verze: Mgr. Milan Smejkal 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

2 E COSYSTEM Definition I. Ecosystem is a summary of living and non-living parts to form a stable system that occurs at certain times and in certain space and include the flow of energy via food - chains and food-webs and the cycling of nutrients biogoechemically.

3 E KOSYSTEM Definition II. Ecosystem is created by the community of organisms together with the abiotic environment.

4 E KOSYSTEMS ARE DIVIDED water – a pond, a rever, the sea etc. land – a forest, a meadow, fields etc..

5 S TRUCTURE AND FUNCTION OF ECOSYSTEMS There are different abiotic conditions in various ecosystems. Biotic conditions are created by the organisms and the relationships between them. There is a different function of organisms in an ecosystem : producers, consumers, decomposers

6 E COSYSTEM AND LIFE In every ecosystem there is a conversion and transfer of energy and other substances. Ecosystems are restored. Ecosystems evolve.

7 ECOSYSTEM Each ecosystem reaches a balance under certain conditions. There is a disruption of balance when changing abiotic or biotic components. The balance of the ecosystem is often ruined by human activity.

8 E COSYSTEM IS A discrete functional unit of nature.

9 E COSYSTEMS ARE DIVIDED INTO : natural constant composition of plant and animal communities at certain abiotic conditions artificial man-made, additional energy

10 T HE MAIN ECOSYSTEMS tundra taiga steppe deciduous forests scrubby forests deserts and semi-deserts tropical deciduous forests and savannas tropical rain forests

11 C HANGES IN ECOSYSTEMS Large areas of the original natural ecosystems have been altered by human activities.

12 WORKSHEETS - REVISION What is ecosystem? Give an example of human activities that negatively affects some ecosystems. What are the biotic conditions made up of? Give examples of natural and artificial ecosystems. How the man puts his supplemental energy into the artificial ecosystem of wheat and why.?

13 SOURCE BRANIŠ, Martin. Základy ekologie a ochrany životního prostředí. 2. vyd. Praha: Informatorium, 1999. ISBN 80-86073-52-1. PAPÁČEK, Miroslav a kol. Zoologie. Praha: pedagogické nakladatelství, 2000, ISBN 80-7183- 203-0. KVASNIČKOVÁ, Danuše. Základy ekologie. Praha: Scientia,spol.s r.o., 1994, ISBN 80-85827- 84-0