1 / 17

Interactions within an Ecosystem

Interactions within an Ecosystem. Unit 1, Topic 1. What is ecology?. Ecology – the study of the relationship between living organisms and their environment Ecologist – some who studies ecology. The Needs of Living Things. Food Habitat Water Exchange gases. Adaptations.

ojal
Télécharger la présentation

Interactions within an Ecosystem

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Interactions within an Ecosystem Unit 1, Topic 1

  2. What is ecology? Ecology – the study of the relationship between living organisms and their environment Ecologist – some who studies ecology

  3. The Needs of Living Things • Food • Habitat • Water • Exchange gases

  4. Adaptations An adaptation is an inherited characteristic that helps and organism survive and reproduce in its environment. If an organism is said to be adapted it means that it is well suited.

  5. Ecosystems An ecosystem is the interaction between living and non-living things in a particular environment.

  6. Interactions in Ecosystems Symbiosis – occurs when two species live closely together in a relationship that lasts over time. There are three types of symbiosis:

  7. Mutualism • a relationship between two different organisms, in which each partner benefits from the relationship. • Example: Ants and aphids – the ants protect the aphids from predators, and in return they drink the sweet liquid that aphids excrete.

  8. Parasitism • A symbiotic relationship in which one organism benefits and the other organism is harmed. • Parasite: the organism that meets its needs at the expense of the other organism • Host: the organism that is harmed by the parasite

  9. Example: Tapeworms and humans • The tapeworms can grow to 10m long and live in the intestines of humans. They benefit by absorbing the nutrients from the human’s food and the human is harmed because it does not get the nutrients from the food it eats.

  10. Commensalism • A symbiotic relationship in which one partner benefits and the other partner appears neither to lose nor to gain from the relationship. • Example: shark and remora – remoras attach themselves to a shark and benefit from the food droppings of the shark. The shark is not harmed, nor does it benefit.

  11. Impacts on Ecosystems • Some animals have a greater impact on their environment. Beavers cut down trees to make dams that actually change the flow of rivers and therefore affect where fish and other organisms can live.

More Related