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Ecology and the environment

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by

GJ Chaves

on 16 May 2018

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Transcript of Ecology and the environment

Ecology and the Environment
Structure of an Ecosystem
Definition of Ecology
Ecology is the study of the interactions between organisms and their environments
FACTORS
Food chain
why only about 10% of energy is transferred from one trophic level to the next?
Food web: connection between different food chains
The more complicated, the more sable
What happen if we kill all the grasshoppers?
Every organism in here represents a trophic level
What is more efficient for humans, to eat plants or to eat animals?
Reflected
In the ocean we can find the more complex food webs
Quantitative information about an ecosystem

CARBON CYCLE
NITROGEN CYCLE
PHOSPHOROUS CYCLE
SULPHUR CYCLE
Interscpecific/intraspecific relationships
Symbiosis
Obligatory Mutualism
Physical and Chemical
Tolerance range curve
Joined by asexual reproduction
Caste systems
Adaptations
Cycle of Matter
Inorganic matter
organic matter
Flow of energy in ecosystems
BIOGEOCHEMICAL CYCLES
Production:
Increase of biomass per unit of time
Productivity:
Relationship between NP and biomass of a Trophic level.
Productivity=NP/Bx100
Atmospheric Nitrogen
Ammonium
Nitrates
Full transcript