Bridzette's+Science+page

= SCIENCE PROJECT = = = = = Bees - Dragonfly Nymph - Blue tongued lizard - Brown Falcon **__ Food chain B __** Azolla (plant) - Bugs - Frogs – Eagles
 * //A.//** **//Create as many food chains as you can from the list of plants and animals. You must at least four steps in two of your food chains.//**
 * __ Food chain A __**


 * //B.//** **//Create a food web using your food chains (start with producers and work upwards and make sure your arrows point in the right way)//**

Food Web

-Azolla, Bugs and Raupo
 * //C.//** **//Which organism are producers?//**

-Dragonfly Nymph//Frogs//Water Rat//Swamp Wallaby//Brown Falcon and Cockatoo
 * //D.//** **//Identify all consumers as either first, second or third order.//**

**//E.//** **//Are any of your organism’s omnivore, herbivore and carnivore?//**

¨ Carnivore; Water Rat and Brown Falcon ¨ Herbivore; Swamp wallaby and Cockatoo ¨ Insectivore; Dragonfly Nymph


 * //F.//** **//Which organisms are predators?//**

Brown Falcon, frogs and water rat (Rakali)

//**G.**// **//Which organisms are preys?//**

Brown Falcon, cockatoo, frogs, swamp wallabies and water rat

//**H**.// **//Which organisms are competing for the same food?//**

¨ Frogs and Dragonfly Nymph are two competitors ¨ Cockatoos and Swamp Wallabies are two competitors ¨ Brown Falcon and Water Rat are two competitors


 * //I.//** **//What would happen to the producer/s if the number of first-order consumers//**

(i) Increases The producer eventually becomes extinct or else decreases.

(ii) Decreases The consumers would get even bigger in numbers leading to a whole change in the food chain.


 * //J.//** **//What would happen to the ecosystem if the second-order consumers become extinct?//**

If the second order consumers became extinct then the third, forth and so forth would become extinct too. Therefore the first order consumers increase.


 * //K.//** **//What are some of the decomposers in your ecosystem?//**

Fungi and Algae


 * //L.//** **//Choose one of your consumers. Predict what would happen if the population changed in size? (increase/decrease)//**

¨ Increase – If the frog population increases, the animals or consumers relying on the frog for food increases as well. ¨ Decreases – If the frog population decreases, the animals or consumers that feed on them for food, decreases or changes its food chain.
 * Consumer Chosen: FROG**

Introduced species are foreign species (e.g. roses, blackberries, foxes, wasps, root rot) that have arrived accidentally or have been introduced intentionally.
 * //M.//** **//What is an introduced species? Are there any in your ecosystem?//**

The Spotted Dove, also known as the Spotted Turtle Dove, is a [|pigeon] and is introduced into the Newells Paddock wetland.


 * //N.//** **//What is a biological control? Are there any in your ecosystem?//**

The biological control approach makes use of the invasive plant's naturally occurring enemies, to help reduce its impact. It aims to reunite weeds with their natural enemies and achieve sustainable weed control. These natural enemies of weeds are often referred to as biological control agents.