Unit 3 Biodiversity Management


Published on

VCE Environmental Science: Unit 3 - Area of Study 2 Notes about Biodiversity Management from Tracey Gray

Published in: Technology, News & Politics
  • Be the first to comment

  • Be the first to like this

No Downloads
Total views
On SlideShare
From Embeds
Number of Embeds
Embeds 0
No embeds

No notes for slide

Unit 3 Biodiversity Management

  1. 1. Biodiversity Management How is scientific data is applied to the assessment of environmental risk in ensuring biodiversity.
  2. 2. SAC 3- Outcome 3: Environmental Assessment. <ul><li>TASK: Written response to set of 6 questions: </li></ul><ul><ul><ul><li>Relative abundance (data set) </li></ul></ul></ul><ul><ul><ul><li>Type I and Type II errors </li></ul></ul></ul><ul><ul><ul><li>Precautionary principal </li></ul></ul></ul><ul><ul><ul><li>Risk assessment – PVA </li></ul></ul></ul><ul><ul><ul><li>Environmental impact conservation strategy. </li></ul></ul></ul><ul><ul><ul><li>Conservation Agreements </li></ul></ul></ul><ul><li>SAC 3: Thursday 22 nd and Friday 23 rd May 2008. Key </li></ul><ul><ul><li>Knowledge and skills in: </li></ul></ul><ul><ul><ul><ul><li>Comprehensive use of scientific data and the application of simple indices to assess the level of biodiversity and the assessment of threats. </li></ul></ul></ul></ul><ul><ul><ul><ul><li>Conclusions drawn from practical activities (data sets) are relevant, accurate and based on evidence. </li></ul></ul></ul></ul>
  3. 3. Biodiversity management <ul><li>In Victoria an Environmental Effect Statement (EES) is prepared by the proponent (person/organisation) planning the development. </li></ul><ul><li>The Environmental Effect Statement addresses: </li></ul><ul><ul><ul><li>The projects key objectives, description of the development proposed, description of the existing environment and the likely environmental effects resulting from the proposal. </li></ul></ul></ul><ul><ul><ul><li>Safeguards that will minimise likely environmental effects. </li></ul></ul></ul><ul><li>The Environmental Effect Statement identifies potential environmental issues and proposes steps to reduce the identified environmental impacts. </li></ul><ul><li>Environmental impact statements often require information on biodiversity. </li></ul><ul><ul><ul><li>Information is collected using scientific methods (i.e. existing data and field surveys). </li></ul></ul></ul>
  4. 4. Life cycle of an Environmental Effects Statements 4. Review of information usually by a Panel (ie. VCAT, state government) 2. Environmental Effect Statement created by proponent 3. Research & Field work, survey of the site of proposed work; To identify the impact of project on the ecosystem ID: species of importance,. Water, air, soil, biodiversity. 1. Project proposed 5. Decision is made on the Environmental Effect Statement
  5. 5. Statistical techniques to evaluate management. <ul><li>How do we scientifically determine if a development has an environmental impact? </li></ul><ul><li>Hypothesis testing. </li></ul><ul><ul><ul><li>Comparison of conditions using information or data. </li></ul></ul></ul><ul><ul><ul><li>Comparison is made between sites and within sites. </li></ul></ul></ul><ul><li>In vegetation management comparisons are made using different scientific techniques: </li></ul><ul><ul><li>Quadrats and line transects. </li></ul></ul><ul><ul><li>Species counts to identify abundance or richness. </li></ul></ul>
  6. 6. Hypothesis testing <ul><li>A Hypothesis tests the difference between the conditions. </li></ul><ul><ul><li>Null hypothesis (H o ): That there is no difference between conditions. </li></ul></ul><ul><ul><li>Alternative hypothesis (H 1 ): That there is a difference between conditions. </li></ul></ul>
  7. 7. Type I and Type II errors: <ul><li>When making the decision to accept or reject the null hypothesis there are two types of errors that can occur. </li></ul><ul><li>Type I error : finding a difference between environmental conditions when there is none. </li></ul><ul><ul><li>Such a decision could lead to stopping development to remedy the situation when it is not necessary to do so. </li></ul></ul><ul><li>Type II error: when no difference between environmental conditions is found, when there is actually a difference. </li></ul><ul><ul><li>In this case the assessment would conclude that there has been no impact on the environment when there actually has been some impact. So that the development has had an impact. </li></ul></ul>
  8. 8. Precautionary principal <ul><ul><li>Precautionary Principal: Is careful evaluation to avoid serious or irreversible damage to the environment does not occur. </li></ul></ul><ul><li>The precautionary principal is applied when scientific information insufficient. </li></ul><ul><li>The precautionary principal makes sure that decisions are made on a number of factors including: </li></ul><ul><ul><ul><li>Shifting the burden of proof to the proponents of the activity. </li></ul></ul></ul><ul><ul><ul><li>Taking preventative action in the face of uncertainty. </li></ul></ul></ul><ul><ul><ul><li>Exploring a wide range of alternatives to the possibly harmful actions. Is there another way of doing things? </li></ul></ul></ul><ul><ul><ul><li>Increasing public participation in decision making. </li></ul></ul></ul>
  9. 9. Relative abundance: <ul><li>Practical activity: </li></ul><ul><ul><li>You are apart of the Orange-bellied Parrot recovery team you are required to conduct field surveys to provide biodiversity information on three sites that a new coastal housing development is proposed on. You conduct your survey using line transects . Your survey must consider the impact on food plants Beaded Glasswort (Sarcocornia quinqueflora) on the Orange-bellied Parrot population. Compare the abundance of this plant at each of the sites and make recommendations based on your findings. </li></ul></ul><ul><ul><ul><li>Examine the number of quadrats at each site to statistically test the difference between sites. </li></ul></ul></ul><ul><ul><ul><li>Calculate the mean species abundance of Orange-bellied Parrot food plants beaded glasswort. </li></ul></ul></ul><ul><ul><ul><li>Mean (total) / N o of quadrats </li></ul></ul></ul><ul><ul><ul><li>3 . Answer the question refer to the data to justify your answers. </li></ul></ul></ul>
  10. 10. OBP habitat survey: Beaded Glasswort plants at each site. Transect (10 m) Site A Yambuk Site B Killarney Site C Port Fairy 1 15 8 8 2 60 5 31 3 46 10 45 4 23 15 27 Total Mean No of quadrats
  11. 11. Using the data to find solutions: <ul><li>Identify the site and transect line that has the lowest number of beaded glasswort plants? Support this with data. (Ie. Low site recorded ** number of ****). </li></ul><ul><li>Why is this site important for Orange-bellied Parrots? Support with data comparisons. (refer to ecological requirements.) </li></ul><ul><li>Suggest two management techniques to protect and enhance the diversity at the site that recorded the lowest number of Beaded Glasswort? </li></ul><ul><li>Which site would you recommend for the new coastal development? Discuss two supporting reasons for your decision, include references to the data. </li></ul><ul><li>How would your interpretation of the results and recommendations change if a type 1 error occurred? </li></ul>
  12. 12. PVA <ul><li>Population Viability Assessment: </li></ul><ul><li>Determining the threats faced by a species and evaluating the likelihood that it will persist for a given time into the future. </li></ul><ul><li>PVA is used because it links planning, research and data collection, assessment of vulnerability and the ranking of management options. </li></ul><ul><li>A PVA includes: </li></ul><ul><ul><li>Ecosystems: Habitat type and availability. </li></ul></ul><ul><ul><li>Breeding and longevity: Birth and death rates. </li></ul></ul><ul><ul><li>Demographics; age structure of populations. </li></ul></ul><ul><ul><li>External influences: weather events. </li></ul></ul>
  13. 13. Actions for Biodiversity Conservation <ul><li>Biodiversity conservation is often limited by funding actions have to prioritise actions to assist species conservation. </li></ul><ul><ul><ul><li>Vitally important in the short term. </li></ul></ul></ul><ul><ul><ul><li>Important long term action </li></ul></ul></ul><ul><ul><ul><li>Least important </li></ul></ul></ul><ul><ul><ul><li>Data collection for monitoring programs </li></ul></ul></ul><ul><ul><ul><li>Education programs </li></ul></ul></ul><ul><ul><ul><li>How do you rate this in terms of importance for the Orange-bellied Parrot? </li></ul></ul></ul>
  14. 14. Strategies for protecting biodiversity <ul><li>CITES – trade of species </li></ul><ul><li>World Heritage Areas </li></ul><ul><li>Ramsar convention (1993) – significant wetlands. </li></ul><ul><li>JAMBA- migratory bird agreement between Japan and Australia. </li></ul><ul><li>Environmental Protection and Biodiversity Conservation Act (1999) </li></ul><ul><li>Victoria Flora and Fauna Guarantee Act (1999). </li></ul>