Australian Ecology By Sinan Kocagil 8A Animal adaptation for the desert Thorny devils have adapted to their environment by changing colour and being able to camouflage. They protect themselves from predators by tucking their head underneath their body and exposing a knob made of fat to trick enemies. Their spiky body is also used for protection. They have learnt to survive by eating ants only. The thorny devils skin doesn’t lose any water by sweating this means it doesn’t need to drink a lot which suits the desert perfectly. Plant adaptation for the desert The Australian Mulga tree has a special way of collecting water. Its tiny leaves grow upward and form a series of funnels that send rain water along the branches and down the trunk to the ground. The roots are concentrated close to the base of the tree and catch the water from the leaves. Animal adaptations for the coral reef Giant Maori Wrasses are 2m long and can weigh up to 190kg. They mostly eat Crustaceans and mollusks. They are able to digest toxic fish such as the sea hare and the boxfish. There bluish body colour suits there environment. they have no predators. The wrasse lives in and amongst the coral reef. Plant adaptations for the coral reef Sea grasses are the only flowering plants that are able to live in sea water, and most of the sea grasses in this area tend to have both flowers and fruit in the months of September through December. The marine animals help with pollination. The reef is home to a quarter of all known sea-grass species. Sea grass survive so well that they can form meadows. Sea grasses also have separate roots, leaves and underground stems called rhizomes which form extensive networks below the surface making them stable. Rainfall patterns for Darwin and Adelaide Darwin rainfall graph The major difference between these two graphs is that during the middle of the year (Winter and Autumn) Adelaide has a large down fall of rain and Darwin has almost no rain at all. But during the beginning and end of the year (Summer and Spring) Darwin has plenty of rain (almost 7 times more than Adelaide’s wettest months) and Adelaide doesn’t have very much rain. Darwin is wetter than Adelaide as it is affected by the monsoon season and cyclones. Alice Springs and Cairns rainfall Cairns receives 300mm in Summer whereas Alice Springs gets only 46mm. Both cities get very little rain in Winter. Cairns is a lot greener due to its higher rainfall for at least 6 months of the year. Alice Springs Cairns Desert Plant Adaptations Tropical Rainforest Plant Adaptations Some plants, called succulents, store water in their stems or leaves; Some plants have no leaves or small seasonal leaves that only grow after it rains. The lack of leaves helps reduce water loss during photosynthesis. Leafless plants conduct photosynthesis in their green stems. Long root systems spread out wide or go deep into the ground to absorb water; Some plants have a short life cycle, germinating in response to rain, growing, flowering, and dying within one year. These plants can evade drought. Leaves with hair help shade the plant, reducing water loss. Other plants have leaves that turn throughout the day to expose a minimum surface area to the heat. Spines to discourage animals from eating plants for water; Waxy coating on stems and leaves help reduce water loss. Flowers that open at night lure pollinators who are more likely to be active during the cooler night. Slower growing requires less energy. The plants don't have to make as much food and therefore do not lose as much water. drip tips and waxy surfaces allow water to run off, to discourage growth of bacteria and fungi buttresses and prop and stilt roots help hold up plants in the shallow soil some plants climb on others to reach the sunlight some plants grow on other plants to reach the sunlight flowers on the forest floor are designed to lure animal pollinators since there is relatively no wind on the forest floor to aid in pollination smooth bark and smooth or waxy flowers speed the run off of water plants have shallow roots to help capture nutrients from the top level of soil. many bromeliads are epiphytes (plants that live on other plants); instead of collecting water with roots they collect rainwater into a central reservoir from which they absorb the water through hairs on their leaves epiphytic orchids have aerial roots that cling to the host plant, absorb minerals, and absorb water from the atmosphere El Nino El Nino is simply the rapid changes or weather disturbances of the ocean. This mostly effects the fisherman on the coasts of the Pacific Ocean. In Peruvian El Nino means ‘the boy’ which refers to Christ because these changes occur during Christmas. Rainforest and Eucalypt forests Rainforest Eucalypt forest The vegetation in a rainforest needs a lot of rain to keep healthy. Which means you can only find them in damp areas. This is what makes most of the plant in a rainforest unique. Some plants and trees include ferns, orchids, cottonwood, lantana, paperbarks, palm lily. There are at least 1160 species. They include brightly coloured flowers and fruits which attract birds Insects and other animals. The vegetation in a Eucalypt forest can survive in wet dry and damp climates. They are mostly made up of eucalypts that are more than eight metres tall, black peppermint and silver peppermint. The understorey trees include wattles, sheoak , bulloak and native cherry Murray-Darling Basin Issues The vegetation in the Murray-Darling basin is currently being threatened by rising salt levels, flooding, drying areas, careless campers, boaters and land-developers. The use of locks and dams interrupts the natural course of the river, restricting water in some areas where it is urgently needed, while other areas receive more water than they normally would in a heavy rainfall season. Recently the water levels have been very low due to years of drought. Agricultural products from the basin The Murray-Darling Basin is Australia’s most important agricultural region, accounting for over 39 per cent of Australia’s gross value in agricultural production. Products include sheep, cattle, dairy, livestock such as pigs, poultry, goats, deer, bees, ostriches, alpacas and horses. cereals – barley, oats, cereal rye, buckwheat, triticale, and wheat. horticultural crops such a citrus, stone fruits, pome fruits, grapes and vegetables. Almost all of our rice and cotton are supplied from the basin Bibliography http://www.mbgnet.net/bioplants/adapt.html •http://www.daintreerainforest.com/location/Daintree/listingResultsView.html •http://www.weatherzone.com.au/long-range-forecast/28-day-rain/nt/alice-springs •http://www.alicespringsdesertpark.com.au/kids/plants/index.shtml •http://www.australianexplorer.com/australian_flora.htm •http://en.wikipedia.org/wiki/Main_Page