Exam 1 Flashcards
What is wildlife
free-living, wild animals of major significance to humans
Public Trust Doctrine 3 principles
- Wildlife can be owned by no individual but is held by the state in trust for all the people
- As trustee, the state has no power to delegate its trust duties and no freedom to transfer trust ownership or management of assets to private concerns
- The state has the affirmative duty to fulfill trust responsibilities
What year did US Grant establish 1st National Park
1872
John Muir
- advocates wilderness preservation
- Yosemite
- Later founds Sierra Club
Lacey Act
Prohibits trade in wildlife, fish, and plants that have been illegally taken, possessed, transported, or sold
1st unit of the National Wildlife Refuge System (and what year)
Pelican Island (1903) Theodore Roosevelt
Migratory Bird Treaty Act
-unlawful to pursue, hunt, take, capture, kill, or sell “migratory birds”
Pittman-Robertson Federal Aid in Wildlife Restoration Act
11% tax on hunting weapons and ammo
First chair of game/wildlife management
Aldo Leopold (1930s)
1940s-1960s
Green Revolution
Federal Insecticide, Fungicide, Rodenticide Act
1947 - 1st to regulate chemicals in the environment
Sikes Act
1960
-fish, wildlife, natural resources on military lands should be protected and enhanced
What year was Silent Spring published
1962
Hughes vs Oklahoma
- 1970
- U.S. Congress may enact legislation governing wildlife on federal lands. When conflicting state law exists, the supremacy clause ensures that federal legislation will prevail.
Fundamental Niche
-the entire range of conditions within which the organisms can potentially be found
Realized Niche
The limited range of conditions within which the organism is observed to be found
What is habitat
the combination of resources and environmental conditions present in an area that produce occupancy by individuals of a given species species-specific
Range
the sum total of the specific resources needed by an organism across space and time
Habitat availability
accessibility or ability of an organism to obtain, consume, exploit, or reside within the resources and conditions in an area
Sampling steps for presence-absence
- Measure resource and environmental conditions
- Statistical analysis
- Make prediction, or map prediction
- Evaluation
Habitat Use
the extent to which an animal consumes, exploits, or resides within the resources and conditions in an area
Habitat selection
- the decision-making process of an animal in determining where to be in the environment
- involves innate and learned behaviors
- involves many various sources of info
Habitat may or may not support _____ and _____ at any given level
Survival / reproduction
Habitat Quality
the ability of the habitat to provide for performance outcomes (individual survival, reproduction, population, persistence)
Ecological Trap
The cues that induce an organisms to say “this looks like a good place to be” are actually not a good indicator of habitat quality
3 components of Fragmentation
(species-specific)
- loss of total area of a specific habitat
- reduction in mean patch size
- increase in mean distance between patches
Area sensitivity
- species-specific
- can be linear or a threshold relationship
- area needs to meet specific outcomes: presence, use, survival, mating, reproduction
Island Biogeography
- We expect colonizations less frequently on distant islands than on near islands.
- If extinctions occur at the same rate on near and far islands, near islands will support a greater diversity of species than far islands
Boone and Crocket Club
- Established by Theodore Roosevelt before presidency
- to promote the conservation and management of wildlife, especially big game, and its habitat, to preserve and encourage hunting and to maintain the highest ethical standards of fair chase and sportsmanship in North America.