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Ch 12: Ecology Pt. XIX
Terms in this set (30)
No part of the biosphere remains unchanged by the collective influence of over ________humans.
________ ______ reflect our resource usage
An Ecological footprint is an ______ of the amount of ____ and ____ required to ______ ____ ____
estimate; land; water; sustain one person.
______ for _______ is the primary cause of forest destruction
Some regions of the world are already experiencing dire _________ shortages, and the problem will probably get worse in the near future.
those with rapidly declining populations
State the problem that will still happen to the population of most nations although the rate of increase will be slower than the past
They will continue to increase for the foreseeable future
State the reason for the US running an enormous ecological deficit
They consume a disproportionate amount of food and fuel and own an overabundance of goods
The typical owners of the largest footprints
the wealthiest of nations
Four examples of the ecosystem services that Earth's land provides via forest destruction
1. Nutrient cycling
2. Flood control
4. Reducing atmospheric levels of greenhouse gases
List the two factors that about three-quarters of the Earth's land surface has been altered by humans through
2. Urban development
List the four biggest threats to freshwater ecosystems
1. Fertilizer runoff
4. Overuse of groundwater for irrigation
Depletion of freshwater is due to...
development in dry climates
The reason for the Hawksbill sea turtle being tagged
As part of a conservation program
This species was once common throughout the Indian, Atlantic, and Pacific Oceans
Hawksbill sea turtle
List four ways that forests are being destroyed by.
3. Road Construction
These are likely to become endangered soon
Give an example of a threatened species
Give an example of a city that was effected by forest destruction
Santa Cruz, Bolivia
A polluted creek in _____ _____, _____ collects urban ____ that contains______, _______ and other ____
Orange County, California; runoff; fertilizers; detergents; pollutants
_______ Dam near ____, Idaho, is a place that was effected by freshwater depletion
Conservation biology is a branch of ecology that seeks to...
investigate and reverse the loss of biodiversity.
Restoration ecology is a field that uses ecological _____ to help ____ ______ _____
principles; repair degraded areas.
________ and _______ ecology are both expanding fields and are making significant progress.
Biodiversity hotspots are relatively ______ areas with unusually _____ concentrations of ______ species and _____ species.
small; high; endemic; endangered
These are only found in a relatively small geographic area.
Conservation biologists recommend preserving __________ in biodiversity hot spots
When people are motivated to act, ______ ______ can be dramatic
The decline in bald eagles in previous years via species recovery
This happened dramatically in the lower 48 U.S. states due to habitat loss and environmental toxins, primarily DDT.
Bald eagles today via species recovery
They have recovered to over 10,000 breeding pairs.
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