Shared Flashcard Set

Details

Essential Environment, Chapter 6
Sacramento City College BIO 350 - Carney
40
Biology
Undergraduate 1
02/21/2011

Additional Biology Flashcards

 


 

Cards

Term
China's growing population problem
Definition
Continued population growth could exhaust resources and threaten the stability and economic progress of Chinese society.
Term
China's One-Child Policy
Definition
Education/Outreach encouraging people to have fewer children
Increased accesibility to contraceptives/abortion
System of rewards/punishments
Term
Success of One-Child Policy
Definition
Growth rate down to 0.6%
(Easier to deal with the many social, economic, and environmental challenges)
Term
Unintended Consequences of One-Child Policy
Definition
Widespread killing of female infants
Unbalanced sex ratio
Black market trade in teenage girls
Term
Population growth increasing worldwide, mainly in...
Definition
poverty-stricken developing nations that are ill-equipped to handle it.
(India)
Term
Causes of ongoing population growth
Definition
technological innovations
improved sanitation
better medical care
increased agricultural output
decline in death rates
Term
Economist view of population growth
Definition
resource depletion due to population increase is not a problem if new rescources can be found to replace depleted ones.
Term
Environmental Scientist view of popluation growth
Definition
Few resources are actually created by people and that not all resources can be replaced once they are depleted.
(Extinct species)
Term
Is population growth really a problem?
Definition
YES if it:
depletes resources
stresses social systems
degrades the natural environment, such that our quality of life declines.
Term
Despite viewing global population growth as a problem, some governments still hold to the idea that...
Definition
Population growth increases a nation's economic, political, or military strength.
(offer financial/social incentives to encourage increased population).
Term
IPAT Model
Definition
formula which helps calculate factors which affect the environment:

Total impact on the environment (I) results from interaction among population (P), affluence (A), and technology (T)

I = P x A x T
Term
Effect of Increased Population (P)
Definition
intensifies impact on the environment as more individuals take up space, use natural resources, and generate waste.
Term
Effect of Increased Affluence (A)
Definition
magnifies environmental impact through the greater per capita resource consumption that generally has accompanied wealth.
Term
Technology (T) that increases our impact
Definition
That which enhances our ability to exploit minerals, fossil fuels, old-growth forests, or ocean fisheries.
Term
Technology (T) that decreases our impact
Definition
That which reduces smoke stake emissions, harnesses renewable energy, or improves manufacturing efficiency.
Term
Environmental factors set limits on our population growth
Definition
We have raised our carrying capacity in the past (Agricultural Revolution, Industrial Revolution), but have not yet found a way to raise it again.
Term
Demography
Definition
the science of applying the principals of population ecology to the study of statistical change in human population.
Term
Population size doesn't tell the whole story.
A population's environmental impact depends on its...
Definition
density, distribution, and composition (as well as affluence, technology, etc.)
Term
Characteristics of human population density
Definition
clumped
highest in regions with temperate, subtropical, and tropical climates
lowest in regions with extreme-climate biomes (desert, deep forest, tundra).
dense at locations near water
Term
Effects of uneven population distribution
Definition
-concentration of people in cities relieves pressure on ecosystems in less populated areas.
-However, some areas with low population are already vulnerable to environmental impacts
Term
Age structure
Definition
data are valuable to predicting future dynamics of populations

large number of young individuals reproducing = rapid population growth
Term
Challenges of a large elderly generation
Definition
Will produce challenges for economy, health care systems, families, and military forces as fewer number of working age citizens try to support large number of elderly
Term
Sex ratios
Definition
slight differences can be helpful, but greatly distorted ratios can lead to problems.

China: culturally, men are more valuable to a family, leading to aborted female fetuses, abandonment, and killing of infant females. Also leaves many men single which has led to underground bride trade.
Term
Total Fertility Rate (TFR)
Definition
average number of children born per female member of a population during her lifetime.

factors that affect TFR:
quality of medical care, urbanization, education
Term
Replacement fertility
Definition
the TFR that keeps the size of a population stable.

when fertility rate drops below this number (in the absence of immigration), population will shrink
Term
Life expectancy
Definition
the time a person can expect to live
Term
Demographic Transition
Definition
A model of economic and cultural change proposed by Frank Notestein to explain the declining death rates and birth rates that have occured in Western nations as they industrialized.

Population growth is viewed as a temporary phenonmenon that occurs as societies move from one condition to another.
Term
The Pre-Industrial Stage
Definition
1st stage in demographic transition.
Death rates high: widespread disease, rudimentary healthcare, food supplies unreliable and difficult to obtain.
Birth rates high: compensation for high infant mortality rates, children valuable as workers. Relatively stable.
Term
Transitional Stage
Definition
2nd stage in demographic transition.
Declining death rates: increased food production, improved medical care.
Brith rates high: people have not yet adapted to new economic and social conditions. Population Growth surges.
Term
Industrial Stage
Definition
3rd stage in demographic transition.
Birth rates decrease: children are less valuable economically as employment opportunities outside the house increase. Gap is closed between birth rates and death rates - population growth is reduced.
Term
Post-Industrial Stage
Definition
Final stage in demographic transition.
Both birth and death rates have fallen to low and stable levels.
Society enjoys the fruits of industrialization without the threat of runaway population growth.
Term
Women's empowerment affects population growth rates
Definition
Fertility rates have dropped in countries where women have gained:
-improved access to contraceptives and family-planning programs
-better educational opportunities
-resulting children are better cared for, healthier, and better educated.
Term
Different approaches to population control
Definition
China: one-child policy
India: two-child norm*
Thailand: education-based approach

1994 UN Conference called for education, reproductive healthcare vs. comand-and-control methods of the past.
*India imposed forced sterilization in the 1970s
Term
Poverty and overpopulation can create a vicious cycle
Definition
poverty encourages high fertility and high fertility obstructs economic development.
Term
Success in Bangladesh
Definition
researchers concluded that success in Bangladesh was achieved due to aggressive , well-funded outreach efforts that were sensitive to the values of its traditional society.
Term
Matlab Project
Definition
Instead of creating new demand for birth control, the project appears to have helped women convert an already-existing desire for fewer children into behaviors, such as contraceptive use, that reduce fertility.
Term
Significant challenges remaining to further reduce population sizes
Definition
impact of family-planning programs on fertility has been a great one, but further reductions may require fundamental social, political, and economic changes that are difficult to implement in traditional, resource-strapped countries.
Term
Poverty is strongly correlated with population growth
Definition
Poorer nations tend to have higher fertility rates, birth rates, and infant mortality rates, along with lower rates of contraception use.

countries/resources may not be able to provide for them.
Term
Consumption from affluence creates environmental impact
Definition
Affluence built on levels of resource consumption.
Affluent societies leave considerably larger per capita ecological footprints.
Term
The wealth gap and population growth contribute to conflict
Definition
increased tensions between the "haves" and the "have-nots."

if developing nations are unable to overcome their mounting social, economic, and environmental challenges, then they could fail to advance through the the demographic transition, causing them to fall back to the pre-industrial stage (negative impact on human welfare and for the environment).
Supporting users have an ad free experience!