Beach erosion:How to prevent?

I live in a coastal fishing village in Mauritius called Le Morne and actuelly we are facing a serious environment problem, that is erosion.So I'd like to have an idea of what should to done to prevent this kind of erosion as many of our trees are being found uprooted and our beach is gradually disappearing.

There are some hotels found in the region but they are further away and there are no nautical tourism activities in the village that are being practised.The beach is clean and the road passes near it. So is there any solution in order to reduce and combat this impact?Also how to involve the community in taking parts in this action. Thanks

Re: Beach erosion:How to prevent?

Beach erosion is one of the environmental problem
facing most of beaches in Arica. It is obvious that
most of the people are lacking knowledge and education
on the importance of beaches. They are after immediate
benefits such as income, firewood for burning lime and
for making charcoal. They are not aware about the
environmental impact of the absence of tree along the
coast.

You can see most of the invester are interested to
invest near the beach. During investing activities
some trees are cut to provide area for building, and
to provide building material. In the coures of doing
all these activities trees are cut to provide area for
building hotels, sand are mined for construction as
the result beach/coast erosion.

Advice. First and foremost, communities living nearby
the beach should be educated on the immediate and long
impact of soil erosion. Thus, they should weigh which
is important to opt for.

Local communities with their leaders (local
leaders)should enact by-laws to guide the beach uses.
Peoples caught destructing the beach must be fined and
sometimes imprisoned to be a lesson to others.

That's my comments
Emmanuel Mhache

--- Jean-Francois Lafleur wrote:

>
> I live in a coastal fishing village in Mauritius
> called Le Morne and actuelly we are facing a serious
> environment problem, that is erosion.So I'd like to
> have an idea of what should to done to prevent this
> kind of erosion as many of our trees are being found
> uprooted and our beach is gradually disappearing.
>
> There are some hotels found in the region but they
> are further away and there are no nautical tourism
> activities in the village that are being
> practised.The beach is clean and the road passes
> near it. So is there any solution in order to reduce
> and combat this impact?Also how to involve the
> community in taking parts in this action. Thanks

Re: Beach erosion:How to prevent?

If the erosion is caused by the cutting of trees, how about forming a small Land Restoration group, with members from the communities, taking cuttings from existing trees, growing saplings and start a tree-planting program to replace the ones that were cut down.

While the saplings are growing, the group could arrange for restoration training by the local agricultural extension officer, if there is such a person and start the restoration process.

Re: Beach erosion:How to prevent?

Beach erosion can be caused by any one of many causes and in order to find a suitable solution, one needs to know the cause - otherwise you could end up making things worse. Accelerated erosion could be due to causes removing sand from the beach (e.g. enhanced sea action usually mitigated by healthy reefs or mangrove forests) or causes preventing sand being deposited onto the beach thereby replacing sand that's naturally lost to the sea(e.g. coastal development may prevent sand from reaching the beach in question or altering coastal currents depositing the sand elsewhere). Land-use changes could also impact beaches such as increased surface runoff, dune erosion etc.

Jean-Francois, perhaps if you can be a little but more specific about the kind of erosion being experienced (does anyone know if we can post photos onto this discussion board?), and if there have been any land-use changes or enviro-damage in the area and the type of development happening.

The South African east coast took a serious beating a few months ago due to storm surges exacerbated by higher than usual spring tides. Durban in particular was hard hit.

BTW, it's predicted that global sea surface rise (as a result of enhanced global warming) is going to increase instances of coastal erosion (stronger wave action, stronger storm events) so doing something now is a good idea.

I'm sure there's a organisation out there willing to assist you, such as WWF, university etc. But first, have you contacted your relevant government department?

Re: Beach erosion:How to prevent?

I am glad so many messages that address the issue of beach erosion.
Everywhere I visit, be it on the east or west side of Africa or the Indian
Ocean Island States, this problem has reached proportions not experienced
before. Of course we need to understand why coastal erosion happens before
we can develop ways to prevent it. The messages brought up some very
legitimate reasons for coastal erosions. One reasons is poor planning of how
coastal areas are used, such as the placement of hotels. I have seen entire
hotels disappear, or turning into ruins in several countries. So, those
people in charge of planning or zoning coastal areas need to pay particular
attention. Other causes involve destruction of reefs and mangrove stands
that buffer the coats from the high wave action of the open oceans. Other
reasons are also mentioned. I have seen how forest destruction also cause
coastal erosion because large amount of water run off to the sea where
before it would have been at least partially contained in the forests. How
to fix it? Maybe there readers of DLIST can contribute. Something that
really impressed me was how local communities replant mangroves in Zanzibar,
involving schools, other groups and the entire community in many cases. And
it works...!

-----Original Message-----
From: Wendy Fourie [mailto:wendyf@laragh.com]
Sent: Friday, September 07, 2007 3:00 PM
To: General Discussion
Subject: Re: [DLIST Discuss] Beach erosion:How to prevent?

Beach erosion can be caused by any one of many causes and in order to find a
suitable solution, one needs to know the cause - otherwise you could end up
making things worse. Accelerated erosion could be due to causes removing
sand from the beach (e.g. enhanced sea action usually mitigated by healthy
reefs or mangrove forests) or causes preventing sand being deposited onto
the beach thereby replacing sand that's naturally lost to the sea(e.g.
coastal development may prevent sand from reaching the beach in question or
altering coastal currents depositing the sand elsewhere). Land-use changes
could also impact beaches such as increased surface runoff, dune erosion
etc.

Jean-Francois, perhaps if you can be a little but more specific about the
kind of erosion being experienced (does anyone know if we can post photos
onto this discussion board?), and if there have been any land-use changes or
enviro-damage in the area and the type of development happening.

The South African east coast took a serious beating a few months ago due to
storm surges exacerbated by higher than usual spring tides. Durban in
particular was hard hit.

BTW, it's predicted that global sea surface rise (as a result of enhanced
global warming) is going to increase instances of coastal erosion (stronger
wave action, stronger storm events) so doing something now is a good idea.

I'm sure there's a organisation out there willing to assist you, such as
WWF, university etc. But first, have you contacted your relevant government
department?

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Beach erosion:How to prevent?

Dear Jean-Francois

I have browsed through some websites on the internet, and have come across some possible alternatives to an eroding beach. I have just summarised them though, but more details can be found on the following links:

http://en.wikipedia.org/wiki/Beach_nourishment
http://www.seafriends.org.nz/oceano/beachsav.htm#do

I am sure some of the approaches listed below could be useful for the situation in your area.

1. One approach could be to involve shoreline engineering in order to prevent upland loss, for example through construction of seawalls or detached breakwaters.
2. Another option would be beach nourishment. In this approach, placement of large quantities of good quality sediment along the water’s edge is involved.
3. Education is another option. This is because some people are not aware of how they can contribute to the erosion of the beach. This could be contacted through schools, television, radio and in newspapers.
4. Tree cutting, especially those that have been planted in closed ranks has been advised to be an effective solution. There is a rule that says, the rows of trees (and shrubs) should not be placed closer than 300m from high water line.
5. Moving of club houses near the water’s edge backwards is also advisable as they may obstruct the wind.
6. Stopping of Fourwheel drive vehicles and bikes is highly recommended. These can destroy vegetation and at the same time streamline the beach profile.
7. Dune replanting should be stopped, as it has very serious long-term effects. This could in fact be how communities can be involved i.e. to remove the vegetation that has been planted close to the beach.
8. Research should be contacted in order to identify the major cause of beach erosion.

Re: Beach erosion:How to prevent?

I would like to bring forward my suggestions regarding this issue. There
are number criterion that can be implemented to eradicate this problem 1
Destroying of afforastration must be not allowed as this encourages
erosion. 2 Plating grass and trees in areas that are mostly vulnerable
to erosion, this will encourage infiltration and the problem that is
currenlty expirienced will be reduced.

These are views of the concerned CPUT student

>>> "Francois Odendaal" 09/08/07 10:36 PM >>>

I am glad so many messages that address the issue of beach erosion.
Everywhere I visit, be it on the east or west side of Africa or the
Indian
Ocean Island States, this problem has reached proportions not
experienced
before. Of course we need to understand why coastal erosion happens
before
we can develop ways to prevent it. The messages brought up some very
legitimate reasons for coastal erosions. One reasons is poor planning of
how
coastal areas are used, such as the placement of hotels. I have seen
entire
hotels disappear, or turning into ruins in several countries. So, those
people in charge of planning or zoning coastal areas need to pay
particular
attention. Other causes involve destruction of reefs and mangrove stands
that buffer the coats from the high wave action of the open oceans.
Other
reasons are also mentioned. I have seen how forest destruction also
cause
coastal erosion because large amount of water run off to the sea where
before it would have been at least partially contained in the forests.
How
to fix it? Maybe there readers of DLIST can contribute. Something that
really impressed me was how local communities replant mangroves in
Zanzibar,
involving schools, other groups and the entire community in many cases.
And
it works...!

Re: Beach erosion:How to prevent?

I read this message and found it very interesting. I
did my Master's thesis in Zanzibar. I found that most
of the people there are well aware about the important
of tree planting.

Finland has financed tree planting in Zanzibar since
1980s. Most trees which are planted now are fast
growing tree such as Casuarina Equisetifolia, Acacia
Mangium and Eucalyptus, to mention a few.

These trees has reduced the cutting of Mangroves which
were the only trees used for construction. With that
regard the government of Zanzibar organized seminars
and campaigns to raise peoples' awareness on the
important of planting and protectin the mangroves
along the coastal areas.

Some shehias or wards have a day of planting mangroves
along the coast. And peoples are not allowed to cut
mangroves any one caught is fined or taken to the law
instruments for punishments. There are by-laws which
protect the people from cutting the mangroves.

--- siphamandla <204551714@cput.ac.za> wrote:

>
> I would like to bring forward my suggestions
> regarding this issue. There
> are number criterion that can be implemented to
> eradicate this problem 1
> Destroying of afforastration must be not allowed as
> this encourages
> erosion. 2 Plating grass and trees in areas that are
> mostly vulnerable
> to erosion, this will encourage infiltration and the
> problem that is
> currenlty expirienced will be reduced.
>
> These are views of the concerned CPUT student
>