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Ecosystems

An interacting community of organisms and their environment
by

Mr. MacD

on 26 September 2012

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Transcript of Ecosystems

interacting communities of organisms and their environments
Ecosystems LIVING THINGS ARE CONSUMERS HERBIVORES DECOMPOSERS grasses flowers trees vegetables organisms that use sunlight to produce energy through photosynthesis algae plankton ECOSYSTEMS deer butterflies goldfish antelope cows hummingbirds beaver mountain goat specialized mouthparts to allow them to eat plants (eg. grazers which have teeth that grow continuously);
have adapted digestion systems that allow them to consume plants (eg. grazing mammals that have multi-chambered stomachs);
often migratory in order to escape winter and find sprouting plants can be herbivores, carnivores, or omnivores PRODUCERS the most important part of the food chain, the base of the pyramid;
use sunlight to create energy through photosynthesis;
have a variety of adaptations, one of which is the ability to follow the sun's
movement (see video);
produce food, oxygen and shelter for consumers HERBIVORES organisms that eat only plants/producers ants maggots bacteria fungi dung beetles worms CARNIVORES organisms that eat other animals CARNIVORES all consumers must eat other organisms to survive
unlike producers, they cannot create their own energy
most herbivores, carnivores and omnivores can be identified by their teeth CONSUMERS lions tigers sharks wolves weasels foxes NON-LIVING THINGS carnivores have a very important role in any food chain;
they help control the populations of other consumers;
they also help to keep populations of consumers strong by preying on
the weak, old or sick members of a herd;
have adapted specialized mouth parts that allow them to tear and
rip flesh OMNIVORES organisms that eat both plants AND other animals OMNIVORES baboons raccoons skunks bears blue jays crows omnivores will eat plants and animals, and often have mouth parts that are similar to both carnivores and herbivores;
some would say that humans are also naturally omnivores;
DECOMPOSERS organisms that consume decaying plant and animal matter
and return nutrients to the soil LIGHT SOIL WATER AIR PROCESSES MOVEMENT: all living things move
RESPIRATION: all living things breathe, or respire
SENSITIVITY: all living things react to their environment
GROWTH: all living things grow
REPRODUCTION: all living things reproduce
EXCRETION: all living things excrete waste
NUTRITION: all living things need energy to live All organisms have these 7 things in common all food chains start with energy from the sun;
light is the primary source of energy for producers,
which form the base of any food pyramid
all organisms need air for respiration
plants take in carbon dioxide and release oxygen
animals take in oxygen and release carbon dioxide made up of particles of broken rock;
supports almost all producers;
is the backbone of all terrestrial
ecosystems
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