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Your search returned 61 results

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

Science Talk 2007: Tim Entwistle

  • TLF-IDM016773

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 ...

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Video

Rob Harcourt

  • TLF-IDM016728

This 6 minute video segment from Catalyst highlights a number of diverse investigations that are part of the work of a marine biologist. It uses an incredible collection of photographs to inform and inspire people about conservation.

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Video

Dengue Mozzie

  • TLF-IDM016733

This nine and a half minute video segment from Catalyst is an excellent example of current Australian science, the use of biological controls on a pest and modern techniques and approaches to fighting the spread of human disease.

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Online

Water: Our most precious resource

  • TLF-IDM020051

This study guide explores how Australian cattle and sheep farmers manage sustainable and efficient water use, including maintenance of healthy soils, moisture preservation, erosion and viable grazing systems. A range of articles and student activities explore the water cycle and ways in which farmers are using water saving ...

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Online

Biodiversity: protecting the environment

  • TLF-IDM020052

This study guide examines the complexity and importance of maintaining a vibrant and healthy farming environment including management of the biodiversity that pasture, livestock and natural fauna and flora. A range of articles and activities explore the challenges and opportunities that cattle and sheep farmers are embracing ...

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Online

Greener farming: protecting the environment

  • TLF-IDM020088

This study guide examines ways Australian cattle and sheep farmers are monitoring and researching how greenhouse gas emissions are being produced by farms and steps farmers use to reduce them. This includes selective breeding programs to produce cattle and sheep whose digestive processes emit less methane, research into ...

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Video

Giant Cuttlefish

  • TLF-IDM016120

This 12 minute video segment from Catalyst outlines the fascinating and unique features of the giant cuttlefish and its mass breeding at Point Lowly. Then it explains how scientists have determined the vulnerability of this species- the fact that the eggs are sensitive to high levels of salinity and the fact that they die ...

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Interactive

Using a Quadrat

  • TLF-IDM016167

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.

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Interactive

Studying Habitats

  • TLF-IDM016170

Students use this resource consisting of four slides with diagrams, written explanation and voice-over to understand the type of observations and measurements that need to be made when studying an ecosystem. There is a two-question quiz and a summary slide.

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Audio

Chemicals on the Great Barrier Reef

  • TLF-IDM016174

This program deals with a range of human impacts on the Great Barrier Reef. Herbicides from land runoff have been traced to algae and sea grasses in river mouths and coastal zones along the Great Barrier Reef. Effects include retardation of photosynthesis and growth of corals. Other pressures on the reef include high water ...

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Video

Too cold for cane toads

  • TLF-IDM016198

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 ...

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Video

Dingo secrets

  • TLF-IDM016205

This 9 minute video segment from Catalyst shows a biologist is finding out about how a family of multi-coloured dingoes is challenging our very idea of these animals. Technology has been invaluable in learning how young dingoes are taught adult behaviour and survival behaviours of the pack.

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Video

Carbon country update

  • TLF-IDM016345

This five and a half minute video segment from Catalyst discusses the potential to manage controlled burning in Arnhem that reduces frequency of wildfires to provide other benefits. The potential to turn this into economic benefits from carbon trading is explored and the science investigations that will first be essential.

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Text

Kooaaa! It's a kookaburra

  • TLF-IDM016300

This ABC In Depth feature article describes how kookaburra chicks fight for survival in the family nest in springtime.

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Video

Turtles

  • TLF-IDM016391

This 7 minute video segment from Catalyst describes the risk factors that impact on turtle survival. Protecting the future of turtle populations on the Queensland coast has been the life's work of Col Limpus for the past 40 years. His efforts have included research and reducing predation from foxes and entrapment in trawler nets.

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Video

Cloud seeding

  • TLF-IDM016406

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 ...

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Interactive

Catchment Detox

  • TLF-IDM016666

Students play the game and make decisions about the development of a catchment with competing economic and environmental demands. Students receive feedback on how sustainably their catchment has been managed.

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Online

Animal Health: the science of healthy animals

  • TLF-IDM020087

This study guide considers the science behind breeding, genetics, health and animal welfare in the cattle and sheep industries - keeping animals free of disease and parasites, improving biodiversity and protecting against feral animals. A range of articles and student activities explores how farmers and scientists are working ...

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Interactive

Who's for dinner?

  • TLF-IDL25

Look closely at a food chain and food web from a billabong habitat. Help animals to feed and survive. Play the role of a tadpole, fish or heron. Help the animal to grow and breed by feeding and avoiding predators. Notice that eating high-value food sources may increase an animal's risk of being attacked by predators.

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Image

Concept cartoon: producers

  • TLF-IDR11933

This image is a concept cartoon. It shows a boy and a girl discussing food chains. One character is stating that producers are always at the start of a food chain, while the other character is refuting this. The cartoon is intended as a stimulus for further discussion of the concept.

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