| 

“The
wilderness needs no defense, only more defenders.” –Edward
Abbey
Because
of its rich and plentiful natural resources that can be harnessed,
Alabama has come under intense industrialization and environmental
degradation in order to further the quality of living for the population.
Increasing farmland for better agricultural output, draining wetlands
to provide space for housing, or damming up rivers and streams all
have an adverse affect on this state’s wetlands. As noted
before, nearly half of Alabama’s existing wetlands have been
lost in the past 200 years, with a national annual net loss of almost
59,000 acres per year.
In
the general public’s mind, we must only protect those things
which are beneficial and provide a worthy reason for saving.
The question is: WHY PROTECT THESE WETLANDS?
•
Because they provide a natural flood
control service?
•
Because they control erosion
by absorbing storm waters and wave energy?
•
Because wetlands act as kidneys by filtering out harmful particles
and increasing water quality?
•
Because they maintain and protect our atmosphere
by trapping would-be harmful greenhouse gases?
•
Because they are among the world’s most biodiverse
ecosystems?
•
Because they provide us with countless natural
resources in abundance?
•
Because they serve as attractive tourist
and recreational spots such as hunting, birdwatching,
and boating?
•
Or is it because wetlands are an astoundingly stunning landscape
that have inspired countless artists and writers as well as offering
ample opportunities for scientific research and development?
The
answer to all is a resounding “YES!”
This table may help gain
an in-depth understanding of what effect altering or destroying
a wetland has on its surroundings:
| Type of Change |
Discrete Events |
Gradual Long-Term Processes |
| Physical |
|
|
| Changes in topography or elevation |
Filling or excavation
Mining, dredge, and fill
Natural deposition or erosion
Floods |
Waterborne sediment increase
Denuding watersheds
Waterborne sediment decrease
Reservoirs, flood-control levees |
| Changes in local or regional hydrology |
Reduction in available water
Draining agricultural land
Diverting water
Increases in water
Flooding from reservoir
filling |
Reduction in available water
Increasing upstream withdrawal
Groundwater overdraft
Increased water amount or depth
Watershed clearing
Coastal submergence |
| Chemical |
|
|
| Changes in nutrient levels |
Increased loading
Point-source discharge
Decreased loading
|
Increased loading
Agricultural run-off
Wetland waste water disposal
Decreased loading
Upland reforestation |
| Changes in toxic substances or contaminants |
Increased loading
Pesticide application
Oil or toxin spill
|
Increased loading
Chronic low-level disposal
Pesticide run-off
Industry waste water discharge
Deposition from air |
| Changes in salt levels |
|
Increased levels
Reduced freshwater inflow
Canal contstruction
Decreased levels
Reduced irrigation return flow |
| Changes in pH |
|
Increased acidity
Acid precipitation
Acid mine drainage
Natural bog succession |
| Change in temperature |
Discharge of heated effluents |
Climate change |
| Biological |
|
|
| Changes in biomass |
Biomass decrease
Fire, clearing, lumbering
Biomass increase
Planting |
Biomass decrease
Grazing, many adverse physical
and chemical changes
Biomass increase
Regrowth, eutrophication |
| Changes in community composition |
Selective harvesting
Introduction of exotic species
|
Natural succession
Selective harvesting
Habitat loss
Change in hydrology |
Source: Wetlands: A Threatened Landscape.
Edited by Michael Williams. Basil Blackwell Ltd.
Cambridge, Mass. 1990 pg. 302-303.
Put in layman's terms, tampering with ecosystems
as intricate as wetlands can have dire and problematic consequences,
ranging from increased chances of flooding to higher water pollution
to loss of threatened plant and animal species in the surrounding
areas.
Until somewhat recently (mid-1980s), federal legislation encouraged
the draining or filling of wetland areas to be put to more "beneficial"
agricultural use. By the time the general public's views of
wetlands changed, nearly 117 million acres -- almost half the original
total of wetland acreage in the U.S. -- had been lost. Although
policies intended to safeguard wetlands are currently in effect,
much debate and confusion still exists as to HOW
we can fully and completely protect such a valued landscape.
Whatever the reason why,
choose to protect wetlands for our enjoyment, for our economy, for
our surroundings, for our future.
Web page updated:
September 3, 2004 4:02 PM
© 2004 Samford University
Questions or comments?
Please contact the Alabama Wetlands
Committee or the Department
of Biology. |