Loading presentation...

Present Remotely

Send the link below via email or IM


Present to your audience

Start remote presentation

  • Invited audience members will follow you as you navigate and present
  • People invited to a presentation do not need a Prezi account
  • This link expires 10 minutes after you close the presentation
  • A maximum of 30 users can follow your presentation
  • Learn more about this feature in our knowledge base article

Do you really want to delete this prezi?

Neither you, nor the coeditors you shared it with will be able to recover it again.


Interactions and Changes in Ecosystems

Natural and Human causes of change Page 48.

Ms. Fanone's Class

on 21 September 2015

Comments (0)

Please log in to add your comment.

Report abuse

Transcript of Interactions and Changes in Ecosystems

This refers to an ecosystems ability to sustain itself.

The ecosystem is able to keep all biotic and abiotic elements in perfect balance.
One of the reasons why ecosystems change.
New species of plants and animals are introduced into new environments which cause an imbalance in the system.
Why ecosystems change...
Interactions and Changes in Ecosystems
Limiting Factors
In all ecosystems, populations of biotic elements are controlled by factors such as food availability, predators, climate, and suitable habitat.
The Lamprey
For years, there was an abundance of fish in lake Ontario but in 1960 the lamprey was introduced.
It is a jawless fish was introduced in the food web.
It had NO predator, so its population increased while the population of salmon and trout decreased as the lamprey consumed them all.
Native Species: things naturally found in the ecosystem.
Introduced Species: things brought into the ecosystem.
Invasive Species: things that are brought in and take over the ecosystem.
Zebra Mussels
Zebra mussels were introduced into the Great Lake system, and had no predators.
They multiplied and found great habitats.
However they clog the piping systems in the water treatment facilities which in turn caused damage to machinery.

All species are in constant competition for resources to meet their basic needs.

They compete for food, habitats, and water sources

Stronger species will survive while the weaker die off.
Full transcript