chapter 7 Flashcards
Establishment and classification of Protected Areas
Most common mechanisms to establish a protected area
-Government action: national, regional and local level
-Land purchases by private individuals and conservation organizations
-Actions of indigenous people and traditional societies
-Development of biological field stations by universities and other research organizations.
-IUCN Protected Areas Designations I-VI
Establishment and classification of Protected Areas
At least 180 countries or more, have protected areas
More than 108,000 protected areas in IUCN categories I-VI have been designated worldwide
30 million km2 on land
2 million km2 at sea
= 13% of Earth’s land surface
-Same as the area used to grow crops
Marine protected areas
-6% of the world’s territorial seas near costliness
-1% of the total marine environment are included in protected areas
-20% of the marine environment may need to be protected
-Over 5000 marine and costal protected areas have been established, but most are small.
-USA has 1700 marine protected areas, of which 13 are marine sanctuaries covering 46,548 km2.
The effectiveness of protected areas
Although the number of species living within a protected area is an important indicator of its potential to protect biodiversity, protected areas need to maintain healthy ecosystems and viable populations of important species.
Prioritization: what should be protected?
WHAT? WHERE? HOW?
Criteria to answer the questions:
Distinctiveness or irreplaceability
Endangerment (or vulnerability)
Utility.
Species approach:
Ecosystem approach:
Wilderness approach
Hotspot approach:
Species approach:
- Focal species
- Indicator species
- Flagship species
- Umbrella species
Ecosystem approach:
- A representative site
- Rapid biodiversity assessments RAPS
Wilderness approach
- “controls”
Hotspot approach: Conservation International, World Wildlife Fund
- Biodiversity indicators
Measuring effectiveness: Gap analysis
1.Data: distribution of species, ecosystems, physical features of the region, etc.: Conservation units.
2.Conservation goals
3.Existing protected areas are reviewed
4.Additional areas are identified
5.Additional areas are protected
6.New areas are monitored
- Use of Geographic Information Systems (GIS)
Designing Protected Areas
Four “Rs” must be considered
-Representation
-Resiliency
-Redundancy
-Reality
Specific questions:
-How large must a nature reserve be to effectively protect biodiversity that cannot survive outside the reserve?
-Is it better to have a singly large protected area or multiple smaller reserves?
-What is the best shape for a natural reserve?
-When a network of protected areas is created, should the areas be close together or far apart?
Park size implications
- When a new park is being established, it should be made as large as possible. Keystone resources should be included, in addition to habitat features that promote biodiversity.
- Whenever possible, land adjacent to protected areas should be acquired in order to reduce external threats to existing parks and to maintain critical buffer zones.
- The present and predicted effects of climate change will change ecosystems within existing protected areas.
Designing Protected Areas
Habitat corridors: strips of land running between the reserves.
Conservation corridors
Movement corridors
Landscape Ecology
Landscape ecology investigates repeating patters of habitat type son a regional scale and analyzes their influence on species distribution and ecosystem process.
Managing Protected Areas
Management plans area needed that articulate conservation goals and practical methods for achieving them. Management activities can include controlled burns, enforcement of restrictions on human use, and maintenance of keystone resources, specially water.
Key stone resources: Any resource in an ecosystem that is crucial to the survival f many species; for example, a watering hole.
Management and people
The involvement of local people is often the crucial element missing form conservation strategies. Local people need to be involved in conservation programs, as participants, employees, and leaders.
Zooning
Zooning helps to deal with conflicting demands on protected areas.
Examples: Zoned marine reserves, also known as marine protected areas (MPAs).
Zooning allows the separation of mutually incompatible activities.
Biosphere reserves
Protected areas established as part of a United Nations program to demonstrate the compatibility of biodiversity on conservation and sustainable development to benefit local people.
Integrates: human activities, research, protection of natural environment, and sometimes tourism at a single location.