Minimum Viable Population The smallest population for a species which can be expected to survive for...

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Minimum Viable Population • The smallest population for a species which can be expected to survive for a long time • Many factors effect MVP – the study of those factors is often called Population Viability Analysis – or Population Vulnerability Analysis – or PVA
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Transcript of Minimum Viable Population The smallest population for a species which can be expected to survive for...

Page 1: Minimum Viable Population The smallest population for a species which can be expected to survive for a long time Many factors effect MVP – the study of.

Minimum Viable Population

• The smallest population for a species which can be expected to survive for a long time

• Many factors effect MVP – the study of those factors is often called Population Viability Analysis – or Population Vulnerability Analysis – or PVA

Page 2: Minimum Viable Population The smallest population for a species which can be expected to survive for a long time Many factors effect MVP – the study of.

English Skylark

Page 3: Minimum Viable Population The smallest population for a species which can be expected to survive for a long time Many factors effect MVP – the study of.
Page 4: Minimum Viable Population The smallest population for a species which can be expected to survive for a long time Many factors effect MVP – the study of.

Metapopulations

Page 5: Minimum Viable Population The smallest population for a species which can be expected to survive for a long time Many factors effect MVP – the study of.

Metapopulation

• A series of small, separate populations united together by dispersal

• Thus even if all members of one population go extinct, other populations survive and dispersal from survivor populations can recolonize the area – a rescue effect

Page 6: Minimum Viable Population The smallest population for a species which can be expected to survive for a long time Many factors effect MVP – the study of.

Metapopulation Dynamics

Page 7: Minimum Viable Population The smallest population for a species which can be expected to survive for a long time Many factors effect MVP – the study of.

Bay Checkerspot Butterfly

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Populationdynamicsof BayCheckerspotButterfly

Page 9: Minimum Viable Population The smallest population for a species which can be expected to survive for a long time Many factors effect MVP – the study of.

Types of Metapopulations

Page 10: Minimum Viable Population The smallest population for a species which can be expected to survive for a long time Many factors effect MVP – the study of.

Habitat Loss

Orange County, California

Page 11: Minimum Viable Population The smallest population for a species which can be expected to survive for a long time Many factors effect MVP – the study of.
Page 12: Minimum Viable Population The smallest population for a species which can be expected to survive for a long time Many factors effect MVP – the study of.
Page 13: Minimum Viable Population The smallest population for a species which can be expected to survive for a long time Many factors effect MVP – the study of.

Habitat Loss

• Habitat is the physical and biological environment used by an individual, a population or a species

• Habitat degradation is the process by which habitat quality for a given species is diminished

• Habitat loss occurs when the habitat quality for a given species is so low that the environment can no longer support the species

Page 14: Minimum Viable Population The smallest population for a species which can be expected to survive for a long time Many factors effect MVP – the study of.

Ecosystem Loss

• Ecosystem is a group of organisms and their physical environment

• Ecosystem degradation occurs when alterations to an ecosystem degrade or destroy habitat for many of the species that constitute the ecosystem

• Ecosystem loss occurs when the changes to an ecosystem are so great and so many species typical of that ecosystem (especially dominant species) are lost that the ecosystem switches from one type to another

Page 15: Minimum Viable Population The smallest population for a species which can be expected to survive for a long time Many factors effect MVP – the study of.

Processes that degrade habitat and ecosystems

• Contamination

• Human built structures

• Soil erosion

• Changing fire regimes

• Human consumption of water

Page 16: Minimum Viable Population The smallest population for a species which can be expected to survive for a long time Many factors effect MVP – the study of.

Copper Basin, Tennessee

Page 17: Minimum Viable Population The smallest population for a species which can be expected to survive for a long time Many factors effect MVP – the study of.

Copper Basin, Tennessee

1926 1939

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Copper Basin today

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Copper Basin – Superfund site

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Restoration of Burra Burra Pit, Copper Basin

Mid-1990s Mid 2000s

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Copper mine tailings, Butte, Montana – largest Superfund site in America

Page 22: Minimum Viable Population The smallest population for a species which can be expected to survive for a long time Many factors effect MVP – the study of.

Mine tailings outskirts of Sudbury, Ontario

Page 23: Minimum Viable Population The smallest population for a species which can be expected to survive for a long time Many factors effect MVP – the study of.

Restoration of Sudbury

Page 24: Minimum Viable Population The smallest population for a species which can be expected to survive for a long time Many factors effect MVP – the study of.

Air pollution – Mexico City

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Page 26: Minimum Viable Population The smallest population for a species which can be expected to survive for a long time Many factors effect MVP – the study of.

Extent of Acid Precipitation

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Rhine River Basin

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Healthy Coral Reef

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Dying Coral Reefs

Bleached coral Silted out reef

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DDT use in 1950s

Page 31: Minimum Viable Population The smallest population for a species which can be expected to survive for a long time Many factors effect MVP – the study of.

DDT inZimbabwe

Page 32: Minimum Viable Population The smallest population for a species which can be expected to survive for a long time Many factors effect MVP – the study of.

Thin Egg Shells from DDT

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Human Built Structures

Page 34: Minimum Viable Population The smallest population for a species which can be expected to survive for a long time Many factors effect MVP – the study of.
Page 35: Minimum Viable Population The smallest population for a species which can be expected to survive for a long time Many factors effect MVP – the study of.

Pacific or CaliforniaFire-bellied Newt

Page 36: Minimum Viable Population The smallest population for a species which can be expected to survive for a long time Many factors effect MVP – the study of.

Pacific or California Fire-bellied Newt –don’t try this at home w/o washing hands

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Tilden Park, Berkeley, CA

Page 38: Minimum Viable Population The smallest population for a species which can be expected to survive for a long time Many factors effect MVP – the study of.
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Snake migration in Shawnee

Copperhead

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Dandelion dispersal – along roads and railroads

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Bonneville Dam, Columbia River, Oregon

Page 42: Minimum Viable Population The smallest population for a species which can be expected to survive for a long time Many factors effect MVP – the study of.
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Fish Ladders

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The Dingo – Canis familiarus dingo

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Dingo Fence – The World’s Longest – New South Wales

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Erosion and loss of habitat on Round Island, Mauritius

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Smokeythe bear- 1953

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Smokey theBear - 1960

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EvergladesSurfaceWater Flow