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Environmental Science test 2
baylor env 1301 test 2
165
Environmental Studies
Undergraduate 2
11/09/2008

Additional Environmental Studies Flashcards

 


 

Cards

Term

 

 

 

POPULATION

Definition
a group of organisms of the same species that live in the same area.
Term

 

 

 

DEMOGRAPHY

Definition

a social science that applies the principles of population ecology to the study of statistical change in human population

 

(the study of human population)

Term

 

 

 

 POPULATION

DENSITY

 

Definition
the number of individuals within a population per unit area.
Term

 

 

 

AGE

STRUCTURE

Definition

The relative numbers of organisms of each age within a population.

Term

 

 

 

SEX

RATIO

Definition

The proportion of males to females in a population

Term

 

 

IMMIGRATION

Definition
the arrival of individuals from outside a population
Term

 

 

 

EMIGRATION

Definition
the departure of individuals from a population.
Term

 

 

 

TOTAL

FERTILITY

RATE

Definition
the average number of children born per female member of a population during her lifetime
Term

 

 

 

REPLACEMENT

FERTILITY

Definition
the total fertility rate that maintains a stable population size.
Term

 

NATIONAL

RATE

OF

POPULATION

CHANGE

Definition
the rate of change in a population size resulting from birth and death rates alone, excluding migrates
Term

 

 

 

DEMOGRAPHIC

TRANSITION

Definition

A theoretical model of economic and cultural change that explains the declining death rates and birth rates that occurred in Western nations as they became industrialized.

Term

What factors lead to increased population?

Definition

technological innovations, improved sanitation, better medical care, incresed agricultural output, and other a tors that have led to a dexline in death rates, particularly a drop in rates of infant mortality.

Term
why do some people say that increased numbers of humans is not a problem?
Definition
human intelligence is a resource
Term

What do other people say about quality of life and resources with increased human population size?

Definition
people cant leave comfortably
Term

Describe the I=PAT formula and its various inputs (the P,A,T)

Definition

I=impact

p=population

a=afluence

t=technology

Term

Describe human population growth through time and the effects of this growth on the environment.  What are future population projections?

Definition

people are living longer so the poplation is booming and it doubles each decade

 

Term

How does population distribution affect the environment? 

Definition
too many clumped in one area causes damaging
Term

Describe the implications for an “expanding” population histogram vs. a stable histogram

What does population growth depend on?  How has technology affected population growth?

Definition
population growth depends on birth and immigration
Term

How do immigration and emigration affect local populations?

Definition
immigration adds to the population and emigration takes away from the population
Term

Although growth rates are declining around the world, fertility rates are still very high in some countries.  Why is this dangerous?

Definition
Term

Describe the demographic transition, its 4 stages and whether it will work for developing countries

Definition

the demographic transition is a model of economical and cultural change that explained the declining death and birth rates in Western nations as they became industrialized

Term

Describe the demographic transition, its 4 stages and whether it will work for developing countries

Definition
Term

How are poverty and population growth related?

Definition
Term

How do wealthy nations affect the environment, although they may not have as many people? How does the “wealth gap” cause conflict?

Definition
Term

Compare traditional with industrialized agriculture

Definition
Term

What is the relationship between poverty and food? 

Definition
Term

Describe how soil is formed through the various types of weathering

Definition
Term

Which soil layer is most fertile?

Definition
Term

Why is soil erosion such a global problem?

Definition
Term

Why is desertification such a global problem?  What was the Dust Bowl?

Definition
Term

Describe how the following methods conserve farmland:  crop rotation, contour farming, terracing, intercropping, shelterbelts, reduced tillage

Definition
Term

Describe the problems associated with irrigation (waterlogging, salinization) and fertilizers

Definition
Term

What are causes and consequences of overgrazing?

Definition
Term

Describe the problems of undernourishment, malnutrition and overnourishment.  What is food security, and have we increased or decreased global hunger?

Definition
Term

Describe the benefits and costs of the green revolution

Definition
Term

Describe some types of pesticides, and a major problem with resistance

Definition
Term

Discuss IPM, and what is included in this method of agriculture

Definition
Term

What are the issues facing GMO’s?  What are the benefits and costs?  How would people argue for the “precautionary principle” regarding GMOs?

Definition
Term

Describe a CAFO; why do some people have problems with “factory farming”? What are benefits and drawbacks to this type of livestock raising?  What is a sustainable solution regarding eating meat?

Definition
Term

Describe some benefits and drawbacks regarding aquaculture

Definition
Term

What is the prognosis for “organic” foods? What are the benefits?  How does Community-supported agriculture work?

Definition
Term

What are genetic, species and ecosystem diversity, and why are they important?

Definition
Term

 

 

What is the Latitudinal Gradient, and why does it occur?

Definition
Term

Why isn’t it easy to know how many species are on Earth?

Definition
Term

Describe previous mass extinctions, and why this one (the 6th) is fundamentally different from the others.

Definition
Term

Describe in detail these causes of biodiversity loss: habitat alteration, invasive species, human population growth, pollution, overharvesting, consumption and climate change

Definition
Term

Know and be able to discuss WHY we need to conserve biodiversity (environmental and economic reasons)

Definition
Term

What is the argument behind the belief that we have an ethical obligation to conserve species?

Definition
Term

What is conservation biology, and what does it try to do?

Definition
Term

What happens to extinction and colonization on islands that are close vs. far away from the mainland, and on large vs. small islands?

Definition
Term

Why is the Endangered Species Act so controversial?

Definition
Term

What is captive breeding and what are some advantages & disadvantages of it?

Definition
Term

What is a biodiversity hotspot, and why is it important?

Definition
Term

How does community-based conservation work? What is its major problem?

Definition
Term

What are the trends regarding urbanization worldwide? Where are the fastest growing cities?

Definition
Term

Why do people move to the suburbs?

Definition
Term

What is urban sprawl, and why is it problematic?

Definition
Term

Understand the role of city and regional planning activities, zoning, Urban Growth Boundaries, and new urbanism, in relation to smart growth.  What are the major principles of smart growth?

Definition
Term

What role does mass transportation play in sustainable cities? Describe some mass transit systems, their advantages and problems

Definition
Term

How do open spaces enhance urban living? 

Definition
Term

What problems with light and noise pollution occur in cities?

Definition
Term

Describe some goals of sustainable urban areas.

Definition
Term

Compare and contrast maximum sustained yield vs. ecosystem-based and adaptive management when dealing with resources

Definition
Term

Describe some ecological and economic values of forests

Definition
Term

What is the problem with deforestation?  Where is it occurring? What happens to loggers’ jobs?

Definition
Term

Why was a U.S. National forest system implemented in the U.S.? Who manages these forests?

Definition
Term

Describe the 4 major types of logging, and some environmental impacts

Definition
Term

What is the multiple use policy for forests?  Which use, realistically, is paramount?

Definition
Term

What is the role of prescribed fires in forest management?  Why are they controversial?

Definition
Term

What is salvage logging, and how can it be abused?

Definition
Term

What does the Bureau of Land Management do?

Definition
Term

What is the foremost goal for U.S. Parks? National Reserves?

Definition
Term

Who administers National Parks and National Wildlife Refuges? What activities are allowed in each?

Definition
Term

What is special about Wilderness areas?  Why are they controversial? What has happened to these areas in recent years?

Definition
Term

What is special about Wilderness areas?  Why are they controversial? What has happened to these areas in recent years?

Definition
Term

Describe a World Heritage Area.  Describe a biosphere reserve.

Definition
Term

What is habitat fragmentation and how does it threaten species?

Definition
Term

Describe the SLOSS dilemma. How do wildlife corridors work?

Definition
Term

Describe 4 types of hazards and give examples of each

Definition
Term

Discuss the impact of diseases, and whether they are increasing or decreasing

Definition
Term

Describe 4 indoor health hazards?

Definition
Term

What does environmental toxicology do?  Why is it important?

Definition
Term

What did Silent Spring do for the issue of environmental toxicants?

Definition
Term

Describe various toxicants (i.e. carcinogens, neurotoxins, etc.), and their effects

Definition
Term

What are endocrine disruptors and why are they important?  Give some examples of organisms that have been affected

Definition
Term

Describe the problems with persistence, bioaccumulation and biomagnifications regarding toxicants

Definition
Term

What types of human studies are conducted?

Definition
Term

Describe a dose-response curve.  What is LD50?  An LE50? What happens below the threshold of response?

Definition
Term

What makes individuals respond differently to toxins?

Definition
Term

Describe acute vs. chronic exposure.  How do they affect responses?

Definition
Term

What are synergistic effects of toxins?

Definition
Term

Discuss the concept of risk assessment, and how we perceive risk

Definition
Term

What is risk management?  Compare the two approaches for determining safety (innocent until proven guilty, precautionary principle approach); which one protects the public better?

Definition
Term

Who regulates toxic substances in the U.S.?

Definition
Term

Environmental health

Definition
environmental factors that influence human health and quality of life and the health of ecological systems essential to environmental quality and long-term human well-being
Term

Toxicant

Definition
a substance that acts as a poison to humans or wildlife
Term

Toxicology

Definition
the scientific field that examines the effects of poisonous chemicals and other agents onhumnas and other organisms
Term

Acute vs. chronic exposure

Definition
Term

Toxicity

Definition
the degree of harm a chemical substance can inflict
Term

Risk analysis

Definition
Term

Urbanization

Definition
the shift from rural to city and suburban living.
Term

Suburbs

Definition
a smaller community that rings a city
Term

CITY

PLANNING

Definition

the professional pursuit that attempts to design cities in such a way as to maximize their efficiency, functionality, and beauty.

Term

ZONING

Definition
the practice of classifying areas for different types of development and land use
Term

Light rail

Definition
Term
new urbanism
Definition

a school of thought among architects, planners, and developers that seeks to design neighborhoods in which homes, businesses, schools, and other amenities are within walking distance of another.

Term

noise

pollution

Definition
Term

light

pollution

Definition
Term

resource

management

Definition

Strategic decison making about who should extract resources and in what ways, so that resources are used wisely and not wasted

Term

maximum

sustainable

yield

Definition

the maximal harvest of a particular renewable natural resource that can be accomplished while still keeping the resuorce available for the future.

Term

deforestation

 

Definition
the clearing and loss of forests
Term

primary

forest

Definition
Term

U.S

Forest

Service

 

Definition
Term

Helathy

Forest

Restoration

Act

Definition
Term

Monumentalism

 

Definition

the impulse to protect enormous, unusual, or beautiful natural features

Term

antiquities

act

 

Definition
Term

wise-use

movement

 

Definition

a loose confederation of individuals and groups that coalesced in the 1980s and 1990s as a response to the increasing success of environmental advocacy

Term

national

forests

 

Definition

public lands consisting of 191 million acres in many tracts spread across all but a few states

Term

national

park

service

 

Definition
Term

wildlife

refuges

Definition
Term
wilderness
Definition
Term

paper

parks

Definition
Term

richness

 

Definition
Term
subspecies
Definition

populations of a species that occur in different geographic areas and vary from one another in some characteristics

Term
extinction
Definition

the disappearance of an entire species from the face of the earth.

Term
extirpation
Definition
the disappearance of a particular population from a given area, butr not the entire species globally.
Term

the

red

list

Definition
Term

biophilia

 

Definition

a phenomenom that E.O Wilson had defined as "the connections that human beings subconsciously seek with the rest of life."

Term

minimum

viable

population

Definition
Term

equilibrium

theory

of island

 

Definition
a theory that was initially applied to oceanic islands to explain how species come to be distributed among them.
Term
biogeography
Definition
Term

biodiversity

Definition

 the sum total of all organisms in an area, taking into account the diversity of species, their genes, their populations, and their communities.

Term

endangered

species

act

Definition
Term

species

at

Risk

Act

Definition
Term

captive

breeding

 

Definition
the practice of capturing members of threatened and endangered species so that their young can be bred and raised in controlled environments and subsequently reintroduced into the wild
Term

umbrella

species

Definition

a species for which meetin its habitat needs automatically helps meet those of many other species.

Term

flagship

services

Definition

a species that has wide appeal with the public and that can be used to promote conservation efforts that also benefit othe less charismatic services.

Term
CITES
Definition
Term

biodiversity

hotspots

Definition
an area that supports an especially great diversity of species, particularly species that are endemic to the area.
Term

species-area

curve

Definition

a graph showing how number of species varies withthe geographic area of a landmass or water body.

Term

community-based

conservation

Definition

the practice of engaging local people to protect land and wildlife in their own region.

Term
agriculture
Definition
the practice of cultivationg soil, producing crops, and raising livestock for human use and consumption
Term
cropland
Definition
Land that humans use to raise plants for food and fiber.
Term
rangeland(pasture)
Definition
Land used for grazing livestock
Term
soil
Definition
a complex plant-supporting system consisting of disintegrated rock, organic matter, air, water, nutrients, and microorganisms.
Term

industialized

agriculture

Definition
a form of agriculture that uses large-scale mechanization and fossil fuel combustion, enabling farmers to replace horses and oxen with faster and more powerful means of cultivating, harvesting, transporting, and processing crops.
Term

green

revolution

 

Definition

an intensification of the industrialization of agriculture in the developing world in the latter half of the 20th century that has dramatically increased crop yields prodduced per unit area of farmland

Term
weathering
Definition

the physical, chemical, and biological processes that break down rocks and minerals, turning large particles

Term

soil

horizon

Definition
Term

topsoil

 

Definition

that portion of the soil that is most nutritive for plants and is thus of the most direct importance to ecosytems and to agriculture.

Term
leaching
Definition

the process by which solid materials such as minerals are dissolved in a liquid (usually water) and transported to another location.

Term

drip

irrigation

Definition
Term

food

security

Definition
an adequate, reliable, and available food supply to all people at all times
Term
monoculture
Definition
the uniform planting of a single crop over a large area
Term

evolutionary

arms

race

Definition
a duel of escalating adaptations between species
Term

biological

control

Definition
the attempt to battle pests and weeds with organisms that prey on or parasitize them, rather than by using pesticides
Term

integrated

pest

management

Definition
the use of multiple techniques in combination to achieve long-term suppression of pests, including biocontrol, use of pesticides, close monitoring of populations, habitat alteration, crop rotation, transgenic crops, alternative tillage methods, and mechanical pest removal
Term

genetic

engineering

Definition
any process scientists use to manipulate an organism's genetic material in the lab by adding, deleting, or changing segments of its DNA.
Term

precautionary

principle

Definition
the idea that one should not undertake a new action until the ramification
Term
seedbanks
Definition
a storehouse for samples of the world's crop diversity
Term

concentrated

animal

feeding

Definition
a huge barn or outdoor pen designed to deliver energy-rich food to animals living at extrmely high densities
Term
aquaculture
Definition
the raising of aquatic organisms for food in controlled environments
Term

sustainable

agriculture

Definition
agriculture that does not deplete soils faster than they form
Term

organic

agriculture

Definition
agriculture that uses no synthetic fertilizers or pesticides but instead relies on bilogical approaches such as compsting and biocontrol
Term

community-supported

agriculture

Definition
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