2.2 APES Notes - Ecosystem Services
Chapter 1: Introduction to Ecosystem Services
Main Notes
What are ecosystem services and why are they important?
Initial Remarks: The teacher comments on the confusion regarding students' understanding of a particular subject, then discussed ecosystem services, explaining their vitality for understanding environmental care.
Key Statement: "What does the environment provide for us?" This is highlighted as the central question driving the curriculum forward, emphasizing the relationship between humans and nature.
Definition of Ecosystem Services: Benefits derived from the environment, which can be:
Tangible: Direct resources obtained from the environment.
Intangible: Services that indirectly benefit humans.
What are the four core categories of ecosystem services?
Categories of Ecosystem Services: The teacher notes there are four categories of ecosystem services:
Provisioning Services
Regulating Services
Cultural Services
Supporting Services
Important Point: The teacher emphasizes that two of these categories are very similar and this causes confusion. Notably, Supporting Services are considered foundational as they underpin the other three categories.
How do provisioning services directly benefit humans?
Examples of Provisioning Services: Examples discussed include:
Food: Fundamental for survival.
Trees: Utilized for building materials (e.g., paper, heating).
Water: Essential for life.
Medicinal Resources: Many prescription medications originate from natural compounds found in the ecosystem, emphasizing the critical link between natural resources and healthcare.
What is biopiracy and its impact?
Biopiracy: This concept is defined, where resources are extracted from nature without fair compensation or return, causing harm to biodiversity and threatening species' survival.
Summary
Ecosystem services are vital benefits from the environment, categorized into provisioning, regulating, cultural, and supporting services. Provisioning services provide direct, tangible resources like food, water, and medicinal compounds. A key concern is biopiracy, the unauthorized extraction of natural resources.
Chapter 2: Regulating Services
Main Notes
How do regulating services differ from supporting services?
Clarification on Terms: The teacher notes the confusion between regulating and supporting services, reinforcing that according to authoritative sources (like the college board), accurately categorizing these services is crucial.
Definition of Regulating Services: Regulating services are defined as functions provided by ecosystems that control natural phenomena, thereby saving humans money in preventing damage or healthcare costs.
Can you list and explain examples of regulating services?
Examples of Regulating Services:
Pollination: Essential for food production; if not done by nature, it incurs additional costs for human intervention.
Water Filtration: Natural processes that clean water environments, reducing the need for mechanical filtration systems.
Erosion Prevention: Healthy ecosystems can buffer storms, protecting human property and infrastructure.
Biological Control of Pests: Natural predators (e.g., birds, bats) control pest populations, reducing the need for chemical pest management.
Climate Regulation: Trees absorb carbon dioxide, thus mitigating global warming effects, improving air quality, and reducing healthcare costs related to pollution.
How does biodiversity impact the effectiveness of regulating services?
Implications for Biodiversity: The importance of biodiversity in maintaining these ecosystem functions is emphasized. The teacher refers to real-world scenarios to illustrate the ramifications of disruption in ecosystem services, such as the introduction or removal of species in certain environments (e.g., Yellowstone wolves).
Summary
Regulating services are ecosystem functions that control natural processes, thus reducing human costs related to damage or health. Key examples include pollination, water filtration, erosion prevention, pest control, and climate regulation. Biodiversity is critical for the effective functioning of these services.
Chapter 3: Cultural Services
Main Notes
What defines cultural services?
Cultural Services Overview: Cultural services are described as the non-material benefits that humans gain from nature.
How do cultural services contribute to the economy?
Economic Contribution: A statistic is presented, indicating that is spent annually on outdoor recreational activities, demonstrating the economic impact of cultural services.
Cost of Enjoyment: Discussion on how funding is necessary to maintain recreational spaces, ensure safe activities in nature, and manage natural resources effectively.
Provide examples of cultural services.
Personal Reflections: The teacher engages with students regarding their outdoor activities and preferences, noting that our enjoyment of nature, such as hiking, sports, and leisurely activities, expresses cultural services.
Personal Anecdotes: The speaker shares personal experiences and fond memories related to outdoor activities, underscoring the emotional connection many have with nature and the cultural value it holds.
Summary
Cultural services are the non-material benefits people derive from nature, encompassing recreation, aesthetic enjoyment, and spiritual values. These services also have a significant economic impact, with billions spent annually on outdoor activities, requiring funding for maintenance and safety.
Chapter 4: Supporting Services
Main Notes
What is the foundational role of supporting services?
Significance of Supporting Services: Supporting services are critical as they enable all other ecosystem functions.
Key Infographic Reference: Visual aids highlight the distinctions between provisioning, regulating, and cultural services, while supporting services act as the foundation upon which they exist.
What are the main functions of supporting services?
Main Functions:
Soil Formation & Nutrient Cycling: Essential for plant growth and sustaining biodiversity.
Biodiversity Maintenance: Supporting services contribute to maintaining diverse ecosystems essential for resilience.
Primary Productivity: Emphasizes the importance of plants in producing energy for the ecosystem (Notable terms include: NPP, GPP, and EP).
How do terms like NPP, GPP, and EP relate to primary productivity in supporting services?
Primary Productivity: Emphasizes the importance of plants in producing energy for the ecosystem. NPP (Net Primary Productivity), GPP (Gross Primary Productivity), and EP (Ecological Productivity) are notable terms related to this function, describing different aspects of energy production in an ecosystem.
Summary
Supporting services are foundational processes that are essential for the existence and functioning of all other ecosystem services. Their main functions include soil formation, nutrient cycling, biodiversity maintenance, and primary productivity, which refers to the energy production by plants in an ecosystem.
Chapter 5: Anthropogenic Effects on Ecosystems
Main Notes
What does 'anthropogenic' mean in the context of ecosystems?
Definition and Importance of the Term 'Anthropogenic': The term refers to environmental impacts resulting from human activities, which are discussed throughout the course.
What are the primary human activities causing land alteration and biodiversity loss?
Major Causes of Land Use: The teacher lists various reasons for land alteration, among them:
Agriculture: Large-scale land transformation for food production impacting diverse species.
Global Warming: Increased carbon levels affecting coral reefs and overall biodiversity.
Over-exploitation and Pollution: Discusses issues such as chemical run-off, introducing invasive species, and other forms of pollution that threaten ecosystems.
How does human consumption relate to ecosystem stability?
Consequences on Biodiversity: The implications of high human consumption rates and their impact on ecosystem stability are highlighted, showing the connections between behavior and biodiversity loss.
Summary
Anthropogenic effects are human-induced environmental impacts. Major causes of ecosystem alteration and biodiversity loss include extensive agriculture, global warming from increased carbon, and various forms of over-exploitation and pollution (e.g., chemical run-off, invasive species). High human consumption rates severely destabilize ecosystems.
Chapter 6: Summary of Key Concepts and Homework
Main Notes
What are the main takeaways from the discussion on ecosystem services?
Reiteration of Key Points: The importance of understanding the distinctions between different ecosystem services and their interdependence was reiterated, encouraging careful note-taking and review.
What are the upcoming assignments?
Assignment and Follow Up: Students are reminded of upcoming quizzes, discussions, and the importance of engaging with the material, including homework to reinforce learning.
Summary
This chapter reiterated the critical importance of understanding and distinguishing between the four categories of interdependent ecosystem services. Students were reminded to review the material, take careful notes, and prepare for upcoming quizzes, discussions, and homework assignments to reinforce their learning.