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Listed under:  Science  >  Life  >  Ecosystems  >  Food webs
Video

Cloud seeding

This nine and a half minute video segment from Catalyst describes how researchers from Monash University have hard evidence that cloud seeding can produce good amounts of extra rainfall. Data collected over a long period of time has give hope to scientists and environmentalists who are trying to reduce the impacts of droughts ...

Video

Too cold for cane toads

A new study reported in this video segment has looked at how temperatures impact cane toad movement and has aided in the development of a model that indicates that their geographical spread is limited. An excellent example of the use of mathematical modelling in scientific research and how scientists have tried to address ...

Interactive

Using a Quadrat

Students use this resource consisting of eight slides with diagrams, written explanation and voice-over to understand how to use a quadrat to estimate a plant population size. There is a two-question quiz and a summary slide.

Video

Coal Gas

This 12 minute video segment from Catalyst outlines how for decades, scientists have worked to develop technologies that can unlock the energy from coal while reducing the risks of digging it up and burning it. Now entirely new industries are booming as they tap into coal seams either too gassy or too deep to be mined by ...

Interactive

Science Talk 2007: Tim Entwistle

An interview and tour of the Royal Botanic Gardens of Sydney and its herbarium with Dr Tim Entwistle, a plant scientist and the NSW Government Botanist. Tim talks to a pre-service teacher from Macquarie University about his love of plants, in particular freshwater algae. In the herbarium we find out why it is so important ...

Video

Cracked soils

This brief video segment from Catalyst demonstrates how scientists have developed probes to measure the water content of soils and therefore monitor the effectiveness of irrigation and the efficiency of water usage.

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Biodiversity and farming for a healthy planet

This is a digital resource containing information and resources, such as printable games, that relate to biodiversity and farming, and how food and materials can be produced while protecting the Earth's natural resources. It includes an extensive glossary of important terms, and external links to teacher and student resources ...

Video

Ladybirds

This program encourages people to observe and identify ladybirds in their own backyard. There is the potential to discover a new species or identify an introduced and harmful member of this group of insects.

Video

Borneo Live Reef Fish Trade

This nearly 13 minute video segment from Catalyst explains how Fisheries scientists warn that if fishing around the world continues at its current pace, more and more species will vanish. The coral triangle is one particular area where biodiversity is at risk, and the top predator appears to be humans.

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Treetop kangaroos

This ABC In Depth feature article includes everything you wanted or needed to know about tree kangaroos. This article describes their reproduction, classification, adaptations and issues relating to their conservation.

Interactive

Habitats

Students use this resource consisting of four slides with diagrams, written explanation and voice-over to understand the relationship between habitat and ecosystem and important factors in some habitats. There is a two-question quiz and a summary slide.

Interactive

Science Talk 2007: Jeremy Leggett

An interview with Dr Jeremy Leggett, global environmental expert from Solarcentury in the UK. Jeremy talks to a teacher from Leumeah High School about global warming, fossil fuels and the design of carbon neutral buildings.

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Rainforest fruit power

This ABC In Depth feature article discusses human potential use rainforest fruit-bearing plants and the need to maintain biodiversity. Many biotic interactions that effect reproduction and dispersal are described. Issues about using seed banks to try to maintain biodiversity are discussed.

Video

Catalyst: Managing bushfires

To burn or not to burn? Investigate the science behind arguments for and against controlled burn-offs that aim to reduce the risk of bushfires to humans. Listen to the reasons Professor Mark Adams of Sydney University gives for a careful approach to prescribed burning.

Video

Daisies describe an ecosystem

Ecosystems are affected by many factors including increasing temperatures, which many scientists believe threaten natural systems on Earth today. This creative clip uses a theoretical world of black and white daisies to show how changes to the natural reflectivity of a planet's surface impacts temperatures and populations. ...

Video

Catalyst: River porpoise rescue

Can you imagine seeing porpoises leaping out of the water in a river near you? Sounds unlikely, doesn't it, but that's what people living along the banks of the Yangtze River in China often used to see. These Yangtze finless porpoises are now rapidly disappearing. Find out why and what Chinese scientist Professor Wang Ding ...

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Animal survivor

This resource provides a scaffold for students to analyse the features of a Queensland animal and relate them to its survival success. Students then conduct the animal design challenge: Engineering new features for their animal to increase its chance of survival and future success. Students also make predictions about how ...

Image

Tuna sandwich trophic pyramid

This image is a diagram known as a trophic pyramid. This example shows the levels of an ecosystem that support the growth of tuna, which might be consumed by a human in a tuna sandwich. The diagram shows six levels in the 'pyramid' from phytoplankton through to humans, and visually depicts the size of the biomass at each ...

Interactive

Environmental forensics at sea

The main screen shows a marine environment and research boat against a background of coastal hills and a fiord. There are two entry points for investigation: Phytoplankton clues and Sediment cores, containing five interviews with a scientist explaining how science investigations can be used as a forensic tool to investigate ...

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Marine scientist in the laboratory

This is a colour photograph of marine scientist Dr Miles Lamare. Dr Lamare is in his office at the Portobello Marine Laboratory at the University of Otago, New Zealand. On the desk behind Dr Lamare is the scientific equipment he uses to download data from electronic tags, which he attaches to sea stars.