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Wednesday, October 30, 2019

Geography report - Creek catchment

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1.0 Introduction


The Local Council Environment Committee has been actively involved in environmental audits in the Coolnwynpin Creek Catchment. This report will be presented to the Tingalpa Creek Catchment Waterway Management Committee, evaluating the current situation of the Coolnwynpin Creek Catchment and the long term sustainability of the waterway under current practices. It will also discuss human impact on the environment, human influences of flora and fauna and what could be done to manage this catchment for sustainability by individuals and groups.


.0 Research Methods


The field trip to Coolnwynpin Creek at Redlands Indigiscape Centre took place on Wednesday nd April 00. The purpose of the trip was to learn and understand more about the condition of the Tingalpa Creek Catchment and the effects that pollution and humans have to the area. There were experiments carried out that tested how healthy the two different creeks were by appearance, bio-diversity, turbidity, dissolved oxygen and the pH levels (see appendix A - table of water results). A volunteer worker helped carry out theses experiments while providing plenty of information on the conditions of the creeks and also the environmental factors about the Coolnwynpin Catchment. This information was also recorded and we were provided with booklets and leaflets with further information on the Catchment. ( see Appendix C - photos 1-6 Site 1, photos 8- Site , water testing and erosion )


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(see Appendix E+F - handouts collected and Idigiscape booklet)


.0 Background Material


The problem that was being investigated was to evaluate the human impact on the environment of the Coolnwynpin Creek Catchment. This site shares a property boundary with thirty-five neighbours, which include rural property and residential properties. This causes a problem because the site is slowly loosing its native animals. This is caused by the loss of habitat due to clearing, cars, dogs, farming and industry. The chicken farm which is near the catchment area, causes a great deal of problems. Run-off from waterflow contains feathers, steroids, waste and fertilizers, which runs into the creek and creates large amounts of nutrients. This not only upsets native plants and animals, it also encourages weed growth thereby affecting water quality.


4.0 Statement Of Findings


4.1 Location/Description of the Chosen Catchment


The Tingalpa Creek Catchment covers 117.km of beautiful bushland.( see Appendix B - map of area ) Tingalpa Creek Catchment is home to over 100 species of birds, 17 species of mammals, 5 species of reptiles and amphibians, 15 species of butterflies and over 00 species of local native plants. ( see Appendix D - list of flora and fauna found ) At Coolnwynpin Creek Indigiscape Centre, you will see garden displays, information displays, beautiful walking paths and also one of the oldest trees in the Shire - 400 year old Tallowood Tree. (see Appendix C - photo 11 -1 Tallowood Tree )


4. Environmental Research Reports


4..1 Comparative Study on Health of Both Sites


How are the Sites Being Impacted


The two creek sites at Coolnwynpin Catchment are both being negatively impacted by humans, especially by litter and pollution, erosion along the banks and the high acidity level of the water. The appearance of the water in Sitewas clearer than Site 1, while both were still brown, dirty and murky. Both sites appear to be healthy because they have a good amount of oxygen in the water and organisms and microscopic life forms are living in the creeks and near the banks.


Why the Sites are Impacted


These sites are being impacted because people are careless about the environment and most people don't have the right attitude towards preserving and caring for native bushland, waterways and animals. The pH level in Site 1 was more acidic than Site , this would be because Site 1 is closer to the neighbouring chicken farm and run-off pollutants that flow into the creek. The amount of Oxygen in the water is normal this is due to special hoses used to pump oxygen in the water, to keep the creeks healthier.


What are the Impacts


There are very severe human impacts caused to the creeks, and this environment is going to keep being destroyed. Sitehad more litter than Site 1, which was mainly food packaging. ( see Appendix C - photo 10 - breadbag litter ) This may be because Siteis closer to the housing estates and because more people tend to eat lunch at this site. If something is not done about this and these sites are left alone, it will affect the animals living in the creek. They could die or be poisoned due to unknown substances entering the water. Site 1 had more erosion around the bank of the creek, due to fence posts that have been positioned right on the edge of the creek. ( see Appendix C - photo 6 - erosion from fence post ) This disturbs soil vegetation along the creek bed, making it unstable. Soil falling and sliding into the creek will disturb animals living in the banks waters. This also decreases the amount of oxygen in the water and decreases turbidity levels.


4.. Current Management Practices


Erosion of the vegetation means soil is being lost where plants and trees could have grown. The erosion in the creeks will continue to widen the creeks edge and banks because there is no deep rooted plants to help hold the soil together. There needs to be native vegetation trees planted around the edge of the creek to slow down and eventually stop the erosion process. Swales would be a great idea for these areas because they are channels made from rocks which prevent weeds from entering the creeks. Swales catch the nutrience which promotes weed growth and therefor prevents them from entering the catchment. In practice now there is hoses which are punctured with little holes in the creek, this aerates the water so that oxygen levels are higher, thereby creating a healthier creek.


5.0 Recommendations


5.1 Criteria used to Evaluate Proposals


To help preserve and protect Coolnwynpin Creek Catchment there are four important aspects considered against each of the proposals - education, planting of more natives, weeds kept under control and creeks kept healthy. These four criteria were chosen because each aspect will help in keeping the catchment healthy and safe. It would also encourage more native animals to live in the area. It is a great idea for the local community to be educated about their environmental area, and what they can do to help neighbouring areas.


5. Use of Criteria to Discuss and Assess the two Proposals


Proposal 1 offers to increase recreational and educational use by the public. Which would create public awareness and education of the creek, which is one of the more important aspects. It could also aid in keeping weeds under control and the replanting of native trees. Which in turn encourages more wildlife, as they are attracted to their natural food source. This proposal would also offer increased care for the rivers and create restricted guidelines for the chicken farm and wreckers. Proposal 1 would also sell native plants which in turn creates corridors for the wildlife and propagating natives to be replanted in the area. Where as Proposaloffers to limit all human contact in the area. This would reduce waste because there would be no human impact. Coolnwynpin Creek Catchment can be left to recover naturally and there would be less chance of native vegetation being removed for human activity.( see Appendix E - list of positives and negatives for the two proposals )


5. Choose One Proposal Examined Above


Coolnwynpin Creek Catchment would benefit most from Proposal 1. Proposal 1 aims to take care of rivers and native plants, by keeping weeds under control. It also aims for recreation and education among the public, so people can learn and be aware of how to properly care for the environment. All these aspects contribute to the long term sustainability, and to making Coolnwynpin Creek healthier. Proposalis not right for this area. If there was no one around to take care of the catchment, weeds would take over and native animals would be discouraged due to the weed infestation. There would be illegal dumping and erosion wouldn't be maintained, further natural run-off from the chicken farm would go unchecked into the creek. Many people would gain from Proposal 1 - people being educated, Indigiscape Centre would get much needed funds and it will mostly benefit the environment and native animals. The people who would least benefit from this proposal would be the neighbouring housing estates, because of the extra amount of people behind their back fences.


5.4 Action Plan


This Proposal could be implemented by the Indigiscape volunteer workers to come up with ways to fund and promote the new Redlands Indigiscape Centre. There would have to be some strict conditions for this proposal to work as planned - No dogs, because their business goes into the river and it spreads weeds. Also dogs scare the native animals and when dogs mark their territory, koalas and other animals won't clime up the tree. Another condition is to provide more bins, because if there is more recreation equipment, then there will be increased rubbish. Sticking to designated paths is a must so that ground cover and small plants aren't stood on. Fines should be issued to those who are breaking the important rules of the Redlands Indigiscape Centre.


6.0 Conclusion


Coolnwynpin Creek Catchment has severe negative human impacts. This site has a number of problems from run-off and erosion to native plants and animals being in danger. Proposal 1 should be opted and put into action as quickly as possible. So that the area can be on it's was to being restored and maintained for future use.


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