Upload
duongkhanh
View
220
Download
0
Embed Size (px)
Citation preview
April 25, 2016
Ma Kôté Mangrove Rehabilitation Project
by SLNT’s Programme Officer-South: Craig Henry
The Saint Lucia National Trust has been collaborating with the Organisation of Eastern
Caribbean States (OECS) and The Nature Conservancy (TNC) in the implementation of two
projects aimed at contributing to the restoration of the Ma Kôté Mangrove in particular, and
mangroves in Saint Lucia in general. The activities were undertaken with funding provided by
USAID through the OECS under an Environmental Mitigation Programme and TNC under a
broader Mangrove Management Project for Saint Lucia. The SLNT was able to synergise
activities under both projects in order to gain maximum benefit and avoid duplication.
Project funding from USAID covered the cost associated with four components:
Construction of a nursery (labour, materials and transportation);
Supporting logistics for a training workshop;
Purchase of materials for seedling propagation and care; and
Biophysical Assessment of die back area within the Ma Kôté Mangrove
1. Nursery Construction
Construction of the nursery began on April 22, 2016 and was completed by April 30th
. As
can be seen in photographs P. 1 through to P. 3, the nursery has an enclosed component
of a size equivalent to the original dimensions (14 feet x 16 feet), with open internal
shelving and outfitted with a secure single entry way. An open extension is attached to
the enclosed compartment and adds extra storage for seedlings at various stages of
maturity.
P. 1
P. 2
P. 3
2. Training Workshops
Training in effective mangrove restoration and management took place from April 18th
to
21st. The training sessions were led by Gregg E. Moore, Ph.D., Associate Research
Professor at University of New Hampshire and Tyrone W. Buckmire, Executive Director
of the Grenada Fund for Conservation Inc. The participation of these lead consultants was
made possible by funding from the TNC. Participants included Officers from the
Department of Forestry; Staff of the Saint Lucia National Trust, members of the Au
Picon Charcoal and Agricultural Producers group and community members from Praslin
and Vieux Fort North. Participants underwent both theoretical and practical training in
propagation of mangrove seeds as well as transplantation of mature seedlings. Important
aspects such as soil preparation and monitoring of growth conditions (salinity) for
propagules in a nursery were also covered. Two pilot restoration sites were established,
one of them being at the Ma Kôté Mangrove. A monitoring regime was established for
the oversight and care of the propagules at the Ma Kôté mangrove nursery. This would
include regular watering of seeds to facilitate germination and monitoring of moisture
levels and salinity content using a salinometer (saline gauging device). The salinometer
was donated to the Au Picon Charcoal Producers by the TNC for regular monitoring at
the Ma Kôté nursery. The Department of Forestry and SLNT will also provide support
for monitoring of the propagules. An instructional manual on mangrove seed preparation
was also provided to participants for future reference. Funding from USAID facilitated
those meetings as well as provided some of the materials needed for seed collection and
propagation of seeds. This includes buckets, potting soils, wheel barrows and potting
bags. Approximately 1000 seeds and seedlings were collected for restoration purposes.
Mr. Tyrone Buckmire leading a presentation on mangrove propagation
Briefing the group on restoration site selection
Collecting mature seedlings for transplantation from a donor site
Seed collections from host trees at Savannes Bay
Preparation of seeds for transfer into the mangrove nursery for germination
Evaluations on the progress of the seedlings transplanted at the Ma Kôté pilot site and also
germinating seeds within the nursery will be conducted every two weeks from April 21st. These
evaluations will be undertaken in collaboration with the Department of Forestry, Au Picon
Charcoal Producers and SLNT.
3. Biophysical Assessment of die back area within the Ma Kôté Mangrove
A ground truthing exercise was carried out in April, 2015 after Google imagery revealed the
existence of major a canopy gap within the Ma Kôté Mangrove towards the northern zone of the
mangrove system. According to a report written by the Chief Forestry Officer, Mr. Adams
Toussaint, the canopy gap is estimated to be about 12 acres of mangrove forest cover. The report
also speculated that ‘toxic chemicals, petroleum hydrocarbons, change in hydrology, fluctuation
in rainfall and climate pattern are four most pertinent and relevant possible causes of dieback
within the Ma Kôté Mangrove. Of major concern was waste water which may contain toxic
chemicals originating from nearby sources and an asphalt plant producing petroleum
hydrocarbons located in the vicinity of the mangroves.
Dieback at Ma Kôté Mangrove (2015) - Photo Credit: Adams Toussaint - Chief Forestry Officer
In order to ascertain the presence of chemical contaminants within the mangroves or surrounding
areas a biophysical assessment was warranted. The assessment would determine not only the
presence but also the levels of contamination of both soil and water samples extracted from
various locations deemed to be critical for this assessment. Additionally, a biophysical
assessment would help to identify the potential source points of these contaminants. Making such
a determination would guide appropriate mitigation measures or actions to be taken by relevant
Government of Saint Lucia agencies and the SLNT. The SLNT, the OECS Commission and the
Caribbean Public Health Agency (CARPHA) have so far agreed on a scope and timeline for the
execution of this assessment.
The Ma Kôté Mangrove is approximately 40 hectares in size and is the largest of all major Saint
Lucian mangrove wetlands. It is located on the southeast coast of the island, within the Pointe
Sable Environmental Protection Area (PSEPA) in Vieux Fort and was declared a Wetland of
International Importance under the Ramsar Convention in 2002.