Exam 1 - A quatic Ecosystem Management: Exam 1 Lecture 1:...

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Aquatic Ecosystem Management: Exam 1 Lecture 1: Introduction Case studies are accounts of real events that constitute condensed versions of thought-provoking situations from the lives of practicing professionals. Goal of using case studies is for you to arrive at informed decisions that integrate a complex array of perspectives and concepts. Because knowledge is not static, I want you to learn how to apply your knowledge from this course to other ‘cases’ outside of this course. 1. What worked? 2. What didn’t work? 3. What can be learned from the study so future management can succeed? Types of scientific inquiry o Deductive science – premises are based on a full set of correct knowledge Dogs are mammals, this is a dog, so therefore it’s a mammal o Inductive science – premises based on best available knowledge when full understanding not available Every crow weve seen is black, therefore all crows are black Asian carp Lecture 2: History 10 dominant themes of ecosystem management (Grumbine 1994) 1. Hierarchal context : seek connections among all levels (genes, species, population, ecosystem) 2. Ecological Boundaries : define ecological boundaries at appropriate scales 3. Ecological Integrity : protect native diversity of a region and ecological patterns and processes that maintain them 4. Data Collection : collect and use wide range of data 5. Monitoring : track the results of management actions 6. Adaptive management : treat management as a learning process 7. Interagency cooperation : promote collaboration among agencies; integrate conflicting legal mandates and management goals 8. Organizational Change : form interagency committees; change professional norms; alter power relationships 9. Humans embedded in nature : recognize that humans influence ecological patterns and in turn are affected by them Another “theme”: Ecosystem Services 1. Provisioning – services such as food and water 2. Regulating – services such as regulation of floods, climate and disease 3. Supporting – soil formation and nutrient cycling 4. Cultural – recreational, spiritual, religious, and other nonmaterial benefits The concept of ecosystem services is similar to that of natural capital. The millennium ecosystem management released in 2005 showed 60% of ecosystems being degraded or used unsustainably Human impacts on ecosystems – o Physical - hydrological changes, channelization, increased sedimentation, dredging and temp changes o Chemical – elevated nutrients, pollutants, salinity o Biological – fish stocking, non-native species introduction, removal of aquatic plants and harvesting fish Ecosystem integrity – ability of ecosystems to support and maintain a balanced, integrated, adaptive community of organisms at multiple trophic levels as well as have functional processes comparable to an ecosystem in a natural habitat of the region o What does this mean in aquatic ecosystems? – water quality, water quantity, and foodweb status
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Exam 1 - A quatic Ecosystem Management: Exam 1 Lecture 1:...

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