Chapter 22 Humans the Environment 22 -1

Chapter 22 Humans & the Environment 22 -1: An Interconnected Planet

Earth’s 3 Major Layers 1. Geosphere 2. Hydrosphere 3. Atmosphere

Ozone Layer O 3 Protection Depletion? http: //my. hrw. com/sh 2/sh 07_10/student/flash/visual_concepts/60405. htm

Greenhouse Effect NATURAL! http: //my. hrw. com/sh 2/sh 07_10/student/flas h/visual_concepts/60406. htm Greenhouse gases Atmosphere traps heat How’s it work?

What’s the problem?

Global Warming: 3 possible outcomes http: //my. hrw. com/sh 2/sh 07_10/studen t/flash/visual_concepts/80008. htm 1. 2. 3.

Think About It! How are these concepts related? Human Activity Ozone layer Greenhouse effect Global warming

Biosphere 2 (AZ). . . didn’t work! Not that simple!

Biodiversity Species diversity: Genetic diversity:

Biodiversity-what we know so far. . .

Biodiversity-who cares? Food Habitat Medicines Chemicals Photosynthesis/production/removing CO 2 “Biological diversity is the key to the maintenance of the world as we know it” – E. O. Wilson

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Chapter 22 Humans & the Environment 22 -2: Environmental Issues

Pollution #1: Smog What is it? What causes it? Why’s it bad?

Pollution #2: Global Warming What is it? What causes it? Why’s it bad?

Pollution #3: Acid Precipitation What is it? What causes it? Why’s it bad?

Pollution#4: Biological Magnification What is it? What causes it? Why’s it bad?

So, what’s the big deal? ?

ECOSYSTEM DISRUPTION All this happening. . . High rates of end/ext. . . ”mass extinction” Endangered species Extinction Habitat destruction, hunting, harvesting, invasive species

https: //www. dnr. sc. gov/pls/heritage/county_species. list? pcounty=charl eston ~100 rare, threatened, endangered in SOUTH CAROLINA!

Ecosystem Imbalances Keystone Species Otter Video

World Population Growth Models

Human Resource Use Too much? Just right? Too little? We use 10 -55% of earth’s NPP Ecological Footprint Use of natural resources Production of waste, pollution We’re exceeding the renewal capacity of earth • Bill Nye “Stuff Happens” Video • “Trashed” Video

Human Resource Use Solution? Sustainable Use

Chapter 22 Humans & the Environment 22 -3: Environmental Solutions Part One

What can we do? !

Conservation Biology Identify, protect, manage natural resources, biodiversity Restoration Biology Ecosystem damage Try to reverse our impact

Just ONE Example… Jwaneng mine (Botswana) Lab-grown diamonds vs. strip mining

Canadian ecosystem. . .

Monitoring Ecosystems Bioindicators SEPMN

Whooping Cranes Before 1870: 20, 000 migrated Canada & Gulf Coast Hunting, draining marshes (building) 1937: ~15 birds left! Hunting regulations, protected areas 1967: USFWS captive breeding program

Collaboration! Migration an issue. . . 2001: pilots 2007: 146 captive 377 wild www. whoopingcrane. com

Questions? ? ?

Chapter 22 Humans & the Environment 22 -3: Environmental Solutions Part Two

Biodiversity Hotspots Green Rich in unique species, in need of protection

Protection: Environmental Policy Federal, International Protecting species, habitats Protected areas Clean up pollution Regulate human activity Sustainable use of resources Ecotourism

Protection: What you can do Mindful of purchases, packaging, etc Garbage. . . recycling. . . sewage. . . Buy local! Plant natives! Enjoy nature, appreciate it Endangered species here? Why? Volunteer w/conservation groups Rachel Carson— 1962, Silent Spring Jacques Cousteau-oceanographer, books, videos

Everglades. . . what’s happened? Development, draining Non-native species National park ’ 47 Birds disappeared, sea grass, shrimp, ag runoff, biomagnification, drained groundwater 20 yr plan

Questions? ? ?