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It is Scientists' jobs to manage populations of threatened species, or pest species, and prevent certain species becoming pests or becoming threatened.  Yet often their suggestions can become highly debated in the public and political sphere. Your assignment will be to write a letter to the relevant policy maker on one of the following questions.   Click on the link to view the assignment and the required readings.  A sample letter is also available, or you can use your own. Brumbies: Should they be culled out of the NSW Snowy Mountains ? Deer: Should they continue to be protected in Tasmania? Foxes: Should we continue to pour millions of dollars into keeping Tasmania fox free? Cats: Should they be confined 24/7? H ow on Earth do I get started? 1. Start by reading (or listening) thoroughly to one of the resources. 2. Take notes from this resource.  It might help to draw up sections in your book about each topic required (ie scientific facts, experts, other views...

What are the limiting factors influencing Swift Parrots? Have a scan through these sites and consider the questions below: BirdLife Australia Swift Parrot Profile > Swift Parrot Fact file Learn a little bit about Swift Parrots here  >  ABC Catalyst short video Learn a little bit more about Swift Parrots > Australian National University video First Dog on the Moon is very funny and excellent. Read his cartoon about Swifties here > FDOTM cartoon Q1. What are the density dependent factors that might be limiting the Swift Parrot population? A density dependent factor is one that limits how members of a population live, due to the number of members within that population Q2. What are the density independent factors that might be limiting Swift Parrot population? A density independent limiting factor   is one that limits how members of a population live – but is caused by a factor outside of population numbers alone   Q3. What are some of the action...

Ecosystem Inputs These are the critical factors required for an ecosystem to function Internal Ecosystem Dynamics This is the way living organisms interact within an ecosystem.   The way these factors interplay will directly impact how species survive within an ecosystem Ecosystem Outputs These are the ‘services’ a functioning ecosystem provides. 1. Energy: usually from the sun and utilised by producers 2. Nutrients: usually from the soil, decomposition or from other ecosystems 3. Water: From rainfall, creeks, runoff, lakes etc. 4. Atmosphere: The balance of oxygen and CO2 in the air is vital for survival of almost all living organisms 5. Biodiversity: This means the range of organisms interacting in an ecosystem. Generally, the greater the biodiversity, the more likely an ecosystem is to thrive and be resilient to change. 1 . Predator-Prey relationships: The transferal of energy around the food web 2. Decomposition: The recycling of nut...