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Ch 7 PPT
Ch 7 PPT

... • Greatest cause of biodiversity loss • Organisms, adapted to their habitat, decline in population when the habitat changes. • Habitat fragmentation: Patches of suitable habitat surrounded by unsuitable habitat • In general, larger habitat fragments can support greater biodiversity than smaller frag ...
Eight part test in accordance with Section 94 of the Threatened
Eight part test in accordance with Section 94 of the Threatened

... IV. ...
Habitat Fragmentation
Habitat Fragmentation

... • Higher-Order Effects: ...
Biodiversity of Life
Biodiversity of Life

... 3. Many plants could not exist w/out animals to pollinate for them and carry their seeds. ...
PVA
PVA

... simulations, tally number of extinction events) + indicates which factors are most important in declines – requires large amounts of data – not generalizable - build anew for each species ...
Study Guide Unit 6
Study Guide Unit 6

... 6. Explain how aesthetic, cultural, and moral justifications may be used for protecting and preserving endangered species. Use one historic example for each justification to illustrate how they have been used to protect and preserve endangered species in the past. 7. Describe what happens, over time ...
Chapter 5 Notes Part A - Mr. Manskopf Environmental Science
Chapter 5 Notes Part A - Mr. Manskopf Environmental Science

... 4) A reintroduced population of wolves in a national park is 90% grey and 10% black, consistent with the wolf population in other regions. After several generations in isolation, the national park’s wolf population is 60% grey and 40% black. The wolf population has ...
Ecosystems Overview - earth science and environmental
Ecosystems Overview - earth science and environmental

... Major factors determining the distribution of terrestrial biomes: ...
APES – Ch. 4-6 Study Guide
APES – Ch. 4-6 Study Guide

... growth momentum. Summarize social impacts resulting from declining populations. 26. List three approaches to slowing human population growth. List the four stages of the demographic transition. Briefly describe the controversies that surround controlling population size through controlling migration ...
Document
Document

... • Other extinction events affected species within particular groups – other groups survived – Example is K-T extinction of dinosaurs; mammals and plants survived to reradiate ...
1 38.1. Hierarchy of Ecology A. Definitions and Levels of Study 1
1 38.1. Hierarchy of Ecology A. Definitions and Levels of Study 1

... Competition between two species reduces the fitness of both; asymmetric competition affects one species less than the other species. B. Competition and Character Displacement (Figures 38.8, 38.9) 1. Competition occurs when two or more species share a limiting resource. 2. However, if the resource is ...
Ch. 9 Sustaining Biodiversity The Species Approach Notes
Ch. 9 Sustaining Biodiversity The Species Approach Notes

... area it once inhabited but is still found elsewhere in the world. –  Ecologically: Occurs when so few members of a species are left they no longer play its ecological role. –  Globally (biologically): Species is no longer found on the earth. ...
Topic 4 - Human activity affects biological diversity
Topic 4 - Human activity affects biological diversity

... only eats bamboo, it cannot switch to other sources of food. Bamboo forests sometimes die off or are cut down, reducing the pandas’ food supply. So although habitat destruction affects the survival of the species, the pandas’ overspecialization makes them even more vulnerable to extinction. ...
Ecological Succession
Ecological Succession

... better chance of adapting to changes in their environment.  These populations that can adapt will survive, reproduce, and pass on their strong genes. Those that cannot will eventually die-off, and become extinct.  This process is also known as natural selection, or “survival of the fittest.” ...
Feb 25
Feb 25

... viability decline drastically? How long does it take population and ecosystem processes to respond to physical changes in the landscape associated with fragmentation? ...
Chapter 12
Chapter 12

... – Steps taken to stave off extinctions can be detrimental to humans ...
ch 7 new book
ch 7 new book

... • Greatest cause of biodiversity loss • Organisms, adapted to their habitat, decline in population when the habitat changes. • Habitat fragmentation: Patches of suitable habitat surrounded by unsuitable habitat • In general, larger habitat fragments can support greater biodiversity than smaller frag ...
Water Resources - Environmental science
Water Resources - Environmental science

... • Greatest cause of biodiversity loss • Organisms, adapted to their habitat, decline in population when the habitat changes. • Habitat fragmentation: Patches of suitable habitat surrounded by unsuitable habitat • In general, larger habitat fragments can support greater biodiversity than smaller frag ...
Chapter 7
Chapter 7

... • Greatest cause of biodiversity loss • Organisms, adapted to their habitat, decline in population when the habitat changes. • Habitat fragmentation: Patches of suitable habitat surrounded by unsuitable habitat • In general, larger habitat fragments can support greater biodiversity than smaller frag ...
Overview of Human Impacts
Overview of Human Impacts

... packs is resulting in rising sea levels • In addition to threatening coastal cities it may negatively effect marshes, sea grasses, mangroves and other low elevation habitats • Changes in coastal land use may not allow habitats to migrate and will result in loss of habitat • Rising sea levels may dro ...
Genetic Variation
Genetic Variation

... with this extinction, therefore ruling out crater impact. • This extinction seems to be linked with a major climate change • The extinction occurred in two waves; the first when an ice age began, and the second when it ended. • Although this is generally accepted as a major extinction, some paleonto ...
Chapter 22-Sustaining Wild Species
Chapter 22-Sustaining Wild Species

... Preserve sufficient areas of habitats in different biomes and aquatic systems Tactics ...
Chapter 22 Descent With Modification 1. Compare the idea of the
Chapter 22 Descent With Modification 1. Compare the idea of the

... concepts of random variation, number of offspring produced vs resources, survival of the fittest, reproductive fitness, and descent with modification 6. List some of the species in the Galapagos islands that Darwin observed while on the Beagle 7. Explain how traits selected upon by nature may be pre ...
Environmental Science
Environmental Science

... A niche is more than a habitat, it is also what the organism does within its habitat ...
7th HW - BioFolio
7th HW - BioFolio

... Habitat ...
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Extinction debt

In ecology, extinction debt is the future extinction of species due to events in the past. Extinction debt occurs because of time delays between impacts on a species, such as destruction of habitat, and the species' ultimate disappearance. For instance, long-lived trees may survive for many years even after reproduction of new trees has become impossible, and thus they may be committed to extinction. Technically, extinction debt generally refers to the number of species in an area likely to go extinct, rather than the prospects of any one species, but colloquially it refers to any occurrence of delayed extinction.In discussions of threats to biodiversity, extinction debt is analogous to the ""climate commitment"" in climate change, which states that inertia will cause the earth to continue to warm for centuries even if no more greenhouse gasses are emitted. Similarly, the current extinction may continue long after human impacts on species halt.Extinction debt may be local or global, but most examples are local as these are easier to observe and model. It is most likely to be found in long-lived species and species with very specific habitat requirements (specialists). Extinction debt has important implications for conservation, as it implies that species may go extinct due to past habitat destruction, even if continued impacts cease, and that current reserves may not be sufficient to maintain the species that occupy them. Interventions such as habitat restoration may reverse extinction debt.Immigration credit is the corollary to extinction debt. It refers to the number of species likely to immigrate to an area after an event such as the restoration of an ecosystem.
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