The
Plan
Researched by Sara Barnowski, Leigh Casadaban, Ying
Chan, Anna Simon,
and Samantha Fox
Short
Term: What to do within the next 20-30 years
Increased
Research
Written by Anna Simon
If large-scale projects were undertaken now
in order to
restore Louisiana’s
wetlands, some would be successful, and some would not, because of the
lack of
understanding and gaps in knowledge of the system and restoration
techniques. Instead, our short term
goals focus more on increasing the research, funding for studying the
wetlands,
and developing restoration techniques.
We propose to set up a large number of relatively small
experimental
restoration sites in diverse areas and monitor these locations
intensely for a
period of approximately three to five years.
An increase in the general study of different types of
wetlands in
southeastern Louisiana
is vital to better understand these areas.
This research will require an increase in funding to
institutions that
are developing restoration technology, such as centers for breeding
plants most
suitable for planting.
Zoning
Laws
Written by Ying Chan
Since human interaction with the wetlands is
a major cause
of degradation, we propose several new zoning laws and also suggest
that
current laws be more avidly enforced.
There are the zoning laws that are generally in effect
for
wetlands in parishes outlined in the State and Local Coastal Resources
Management Act:
- Non-water dependent forms of
development are restricted to uplands and areas at least 5 ft. above
sea level.
- Waste treatment and facilities
in parishes must be removed from wetlands and be constructed in a way
to prevent leaching.
- Non-water dependent uses of
wetlands are prohibited. Such activities should occur in regions
that are suitable for development, as far as way as possible from
flood-prone areas and environmentally sensitive wetlands.
- If a permitted development in a
parish will have adverse effects on wetlands, the parish will plan and
determine what the private owner must do in order to compensate for
wetland loss.
Here
are zoning features that we propose be enforced:
- Draining or filling is
prohibited in pristine wetland areas.
- For wetlands preserved for
conservation, at least a 100 ft. vegetative buffer strip should be
placed along the boundaries of wetlands to absorb runoff from urban
areas. A buffer zone must be kept between wetlands and developed
areas.
- Prior to rebuilding, each parish
must evaluate where commercial, industrial, and residential districts
should be situated to have as little impact on wetlands as possible.
- Bayou communities (which are
low-lying marshland area) should practice low-density sprawl to
downsize the population density. In addition, each private owner
of wetland areas is responsible for protecting the wetland by planting
marsh vegetation and doing other things to help restore wetland
areas.
- All activities in industrial or
agricultural areas that may affect adjacent wetlands must be managed to
have as little impact on wetlands as possible by following strict
guidelines for minimizing the release of pollutants. Best
management techniques must be enforced for farming (such as crop
rotation, contour farming, recharge aquifers), foresting, oil drilling
(using directional drilling and avoidance of canals through barrier
islands and wetlands). Ground water quality must be continually
monitored to detect any pollutants to ensure that the guidelines are
followed.
- If forested wetlands are to be
developed, at least 50% of the area must be put aside for recreational
parks.
Wetlands Regulation
and Protection
Permits from the parish or Army Corps of
Engineers are
required for development occurring within a flood plain or coastal
zone.
Through the Clean Water Act: Sec 404, major jurisdiction is handed to
the Army
Corps of Engineers and EPA over wetlands near “navigable waterways” for
issuing
permits for activities that discharge materials into the
wetlands. Given
that the Army Corps of Engineers make some controversial decisions that
affect
wetlands, parishes must share the role of authorizing permits for these
wetland
areas. Permits must be required not only for discharging dredged
or fill
material into dredged material into wetlands, but also for draining
wetlands.
All
activities that are allowed to occur with general
permits should be posted publicly, and permitting for restoration
projects
should be carried faster and more efficiently by allowing input from
the parish
council.
The Clean Water Act tries to enhance the
water quality of
wetlands by making sure that the activities allowed to occur in wetland
territory comply with the water quality standard standards of Louisiana.
Louisiana
must take advantage of this policy
by making very strict water standards for wetlands to limit the
pollutants that
they receive from point and non-point source.
Farm programs like the Swampbusters Act
provide farmers with
federal funding or federal benefits if they do not convert more wetland
to
farmland and dedicate a portion of their land for wetland restoration.
Each parish has coastal zone management laws
for how wetland
territory shall be used and what restoration techniques it will
apply.
The Coastal Zone Management section of the parish’s Commission on
Planning and
Zoning works with government agencies and private owners on the
construction of
restoration projects. (Coastal Zone Management)
Although many coastal restoration programs
like the Breaux
Act and the Louisiana Wetlands Conservation & Restoration Trust
Fund
provide funding for restoration projects derived from taxes, the
federal
government must enact legislation that will provide billions of dollars
for
speeding up restoration projects. The money will fund the
acquisition of
wetlands, the restoration of wetlands, and management of wetlands.
Immediate
Action
While current understanding of the wetlands
is not as
complete as it could be, there are certain techniques that will work
for areas
experiencing a higher rate of deterioration.
Barataria Bay Basin
Written by Anna Simon
(http://www.lacoast.gov/geography/basins/ba/index.asp) From LaCost.gov
The southern, coastal, portion of the Barataria Basin
is facing the most serious land loss. Unless action is taken, the
basin
could lose approximately 25% of its current wetland area (Barataria
Basin
Summary). The most critical problem is the lack of fresh water,
nutrients, and sediment. Levees along the Mississippi
and freshwater diversion essentially eliminated significant input of
fresh
water and sediment into Barataria
Bay.
The result of
these problems is an increase in tidal flux through Barataria Bay,
which results in a positive feedback cycle even higher levels of
salinity,
plant death, and erosion.
Fresh water must be diverted back into the Barataria Basin.
This is accomplished by siphoning fresh water into bays and waterways,
and
constructing weirs and other management structures in order to maximize
nutrient uptake and sediment retention (Naomi Outfall Management
General
Factsheet). Although previous projects, such as the Naomi
Outfall
Management and the Mississippi River
diversions have been somewhat successful at reducing salinity and
increasing
sediment and nutrient levels, additional fresh water, sediments, and
nutrients
are also vital to reducing erosion. Our
plan is to divert the Mississippi River at a point below New Orleans and
direct it into the basin.
Additionally, the bay side of the barrier
islands should be
restored with dredged sediment and replanted (Barataria Basin
Summary).
Dredged sediments can either be taken from river beds or neighboring
off shore
locations. Planting of native species
will yield a much faster recovery as well as preserve the ecological
dynamics
by not introducing invasive species.
Pontchartrain Basin
Written by Sara Barnowski
(http://www.lacoast.gov/geography/basins/po/) From LaCoast.gov
In 2002 the majority of
Pontchartrain's shoreline was eroding at a rate of at least a meter per
year,
and a southwestern segment was eroding four meters per year (USGS,
Center For
Coastal and Watershed Studies, 2006). This is especially
significant to
the land bridges between Lake Pontchartrain
and the surrounding Lakes Borgne and Maurepas. These land bridges
are
comprised of marshes and cypress swamps,
which
act as buffers to
prevent salty water, pollution, and storm surges from entering
neighboring
lakes and reaching into other basins. Increased erosion,
development, and
natural subsidence all contribute to decreasing the area of land that
separates
the lakes and freshwater ecosystems from the ocean (Geography: Coastal
Louisiana Basins, LaCoast). This increases the rates of
salt-water intrusion
and significantly alters the ecology of the region.
Zoning laws prohibiting commercial and
residential development, along with intensive planting and
sedimentation
efforts should be implemented to prevent the further degradation of
these land
bridges.
Chandeleur Islands
Written by Samantha
Fox
The Chandeleur Islands
are composed of a
chain of barrier islands located on the eastern edge of St. Bernard and
Plaquemines Parishes. Due to numerous
hurricanes in the past ten years, the islands have experienced a much
greater
rate of erosion. The best way to prevent
such loss is to plant smooth cord grass, Spartina
alterniflora, to hold the soil in place and promote growth and
stability
(Chandeleur Islands Marsh Restoration, 2001).
Canal Regulations
Written by Leigh Casadaban
The simplest solution would be to have fewer
canals. Industry
trafficking in southern Louisiana
is not well organized, and several canals are barely used.
By channeling
traffic to a select few canals, we can save a majority of
freshwater ecosystems,
allowing the wetlands to thrive. Additionally, we can
introduce new
structures within the canals to prevent water contamination. A
locked
dam, for instance, would be a major project that would require
high funds
and new trafficking laws. Also, enforcing canal walls with
vegetation will
prevent saltwater spillage. To help prevent wave induced erosion,
rock
dikes used as sediment traps, weirs and rock plugs can be placed along
the
mouth of the canals (Stokstad, 2005).
Educate the Masses
Written by Sara Barnowski
After hurricane Katrina the people of Louisiana began
to realize how important the
wetlands were to their safety. Therefore, people are presently
willing to
give more time and effort to the restoration process. But these
wetlands
will be equally important in ten, fifty, even one hundred years, and it
is
likely that people will have lost some of their zeal for protecting
them.
Because this is the case, it is important to begin educating the public
about
the natural ecosystems that surround them. That way they will
still be
willing to consider them the next time they vote, or when they are
considering
expanding their community by filling in a wetland ecosystem. This
education process could begin by implementing an environmental science
unit
into the school curriculums. But it is also important to get the
adult
community involved, and allow them to participate in decisions
affecting the
wetlands. To accomplish this, a time could be arranged in which
people
from the community go into dilapidated wetlands and assisted in
replanting and
restoring them, instead of leaving that work solely to
scientists. Also
by incorporating smaller wetland parks and green spaces into the
construction
of the city, citizens will have a greater opportunity to experience and
appreciate wetland ecosystems.
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