Grade 10 Life Sciences

Biosphere to Ecosystems: Environment

Source; Biospiritual Permaculturehttp://biospiritualpermaculture.com/page/about

Ecology

= study of interactions between living things and their interactions with their physical and chemical environment.

Sources: Science. Lots of Lessons - http://science.lotsoflessons.com/ecology.htmlDreamstime - http://www.dreamstime.com/stock-images-ecology-environmental-poster-image7630344

Levels of organisation

Source: Bio3002 Levels of ecology – www.ux1.eiu.edu

Producers= produce their own food (photosynthesis)

Consumers= rely on others for their energy and food supply

Ecosystem

HerbivoresCarnivoresScavengerInsectivoresOmnivoresDecomposers

Living = Biotic factors Non-living = Abiotic factors

Non-living part of the ecosystem:TemperatureWindWaterLightSoilSlope

Source; BIO 7: Lecture 24 Previewwww.csus.edu

Source; BIO 7: Lecture 24 Previewwww.csus.edu

An example of interaction between biotic and abiotic factors:Sub-Antarctic Marion Island

Image credit: www.sanap.ac.za

Prince Edward Islands (Marion Island and Prince Edward Island)

Approximately 1,920 km from Cape Town

Location

Marion Island Coastal Plains

Marion Island Interior

Management zones for human activities on Marion Island