by
T.O.M. Bazuin 2
Associate Scientist on
Forest Genetic Resources
IPGRI-CWANA, Syria
BACKGROUND
The Near East region is characterized by a wide variety of climatic and
geographic environments. On one extreme the region is differentiated by
high mountain ridges receiving more than 1000 mm precipitation annually,
and on the other extreme by the deserts and semi-deserts with an annual
precipitation of less than 200 mm. These features, together with the long
history of human settlement, have had a profound effect on the biological
diversity in this region. A wide range of ecosystems, including forest
ecosystems, can be found. These forests and woodlands play a fundamental
role in soil, water and environmental conservation, and are also important
for the provision of many basic products and services. A considerable
amount of the commercialized fruit and nut trees, for example, originate
from this region. Many of their wild relatives (e.g. wild pear, wild pistachio
and wild olive) can still be found in their natural environment, serving
as a valuable genetic base. Coordinated research and protection efforts
are already underway in some Central Asian countries towards the conservation
of the genetic diversity of wild fruit and forest tree species.
However, due to overexploitation, deforestation, habitat fragmentation, overgrazing and forest fires, these resources are highly degraded throughout the region. Although several countries have put considerable efforts in conservation actions and the awareness of the need to act is growing, the focus is mainly on ecosystem conservation. Much less attention has been paid so far to the issue of conservation and sustainable use of the forest genetic resources (FGR).
INTRODUCTION
In recognition of the importance and the alarming status of the forest
genetic resources in the Near East, IPGRI's Global Forest Genetic Resources
Program expanded its activities to this region in the beginning of 1998.
The objectives of the FGR research program in Central-West Asia and North
Africa are (1) to strengthen existing, or promote the establishment of,
national Programs on Forest Genetic Resources, and (2) to promote the
development of conservation and sustainable use strategies for FGR.
Since the experiences with FGR conservation are limited in the Near East, IPGRI decided to focus its collaboration on two pilot countries. Syria was selected, because of the country's request for technical assistance and need for information on its FGR in order to improve its efforts in afforestation and reforestation. Given Lebanon's concern and active involvement in the conservation of the country's forest resources, this country was chosen as second pilot country.
Forest Genetic Resources Workshops
Priority setting for FGR conservation and use is essential for the efficient
allocation of limited resources of time, funds and personnel. Ideally,
this priority setting should be done by all stakeholders to ensure optimal
support and cooperation. Therefore, IPGRI contributed to the organization
of two workshops, respectively in Lebanon and in Syria, on priority setting
for FGR research activities, in 1998. The objectives of these workshops
were: 1) to identify, and discuss with, relevant national partners, 2)
to assist them in the selection of priority species and 3) to help develop
a research framework for the conservation and sustainable use of FGR.
In total 28 participants attended the two workshops, representing a broad range of national organizations and institutes involved in forestry or forest related areas. In the first session the participants expressed the need for, and their strong interest in, information collection and management on FGR. This need for better information is linked with the increasing efforts towards the conservation and sustainable and management of forests. Although the current conservation activities focus on ecosystem level rather than species level, there is also an increasing interest in a more targeted, species oriented approach for the benefit of rural communities and farmers, and national forest services.
Ecozones in which the species can be found (Potential) socio-economical value Ecological value Distribution pattern of the species and its populations Distribution pattern of its genetic variation Threats imposed on the species Conservation status Reproductive biology Presence or absence of baseline information |
Selecting priority species
In the following session the participants discussed on how to select priority
species. A set of possible selection criteria was identified and proposed
(see Figure 1). Of this set, the participants considered the actual and
potential socio-economic value, the ecological value and the conservation
status as the most important criteria. The next issue was how to quantify
these criteria. After discussing various options, it was decided to give
each criteria a code, corresponding to its value or impact on the species.
For the socio-economical and ecological criteria a code from 1 (very low
value) to 5 (very high value) was given. For coding threats, a similar
ranking from 1 (save) to 5 (risk for extinction) was given. Each participant
provided information and quantified the criteria for each species on expert's
opinion basis, followed by a discussion on the preferences and final agreement.
In each countries six priority species were selected, based on their total
score (Table 1).
Syria |
Total score |
Lebanon |
Total score |
Ceratonia siliqua |
15 |
Cedrus libani |
14 |
Developing a research framework
In order to develop strategies for the conservation and use of FGR, (including
in situ conservation methods, ex situ conservation techniques
or an appropriate combination of both), specific information about the
target species and its environment is needed. The participants made an
assessment of the availability of information important for the conservation
of each priority species' genetic resources. For most species relevant
information is partly if not completely missing, including scarcity of
1) data on the distribution and characteristics of the species and its
populations, 2) information on the uses of and threat to the species,
and data on their socio-economic value, and 3) information on the genetic
diversity patterns of the species and the processes affecting these patterns.
These gaps in information were translated into research activities proposals.
There was a general consensus among the participants that priority should
be given to those activities that would support the development of strategies
supporting FGR conservation and use. At this stage a research framework
for priority species was proposed. The research framework concentrated
on three different study areas, i.e. (a) eco-geographical surveys, (b)
use and threat assessments and (c) genetic diversity studies (Figure 2).
Such a research framework should facilitate better linkages between the
various research activities, allow a continuously monitoring of these
activities and enhance continuing information flow. The participants agreed
that to focus their efforts, future activities on the conservation and
use of FGR should follow such a framework. They also agreed that the framework
could facilitate linkages between the different research disciplines (forest
ecology, socio-economics and plant genetics), thus enhancing a multidisciplinary
approach.
Based on the outcome of the workshops, workplans were developed for four priority species, i.e. Pinus brutia and Pistacia atlantica in Syria, and Ceratonia siliqua and Pinus pinea in Lebanon.
ECO-GEOGRAPHICAL SURVEYS
Since 1999 eco-geographical surveys of Pinus
brutia and on Pistacia atlantica have been carried out in Syria,
by the Forestry Department of the Ministry of Agriculture and Agrarian
Reform (MAAR), the Arab Center for the Studies of Arid Zones and Dry Lands
(ACSAD) and the Tishreen University. In Lebanon, the American University
of Beirut (AUB), the Saint Joseph University and the Directorate of Rural
Development and Natural resources of the Ministry of Agriculture (MA-DRDNR)
and IPGRI joined forces to organize a joint project on carob (Ceratonia
siliqua) in 1999. An eco-geographical survey was also carried out,
except in the southern part of the country because of the military situation.
The aim of these surveys was to map the species/populations distribution,
to collate information about the climate, soil and population characteristics,
and to define the ecozones. This information was further used to develop
sample strategies and collect leaf samples for genetic diversity studies.
To map the distribution of the three species, two different approaches were used. In Syria, GPS (Geographical Positioning System) and GIS applications were used to mark and map the boundaries of the forest stands. Although methods using satellite images, topographic maps or aerial photographs would have given more reliable and detailed results, such material is hardly available in Syria. Moreover, for the mapping of Pistacia atlantica stands, which consists of widely dispersed individuals, even more detailed images would have been needed. Altogether, the use of GPS was considered the best alternative for the surveys of Pistacia atlantica and Pinus brutia in Syria.
In Lebanon another method was used. The carob tree (Ceratonia siliqua) occurs mainly in low-rise maquis dominated by Quercus spp., as a (sub-) canopy species. while it can also be found in the understudy of pine forests. Mostly, these populations consist of widely scattered or small clusters of individuals. These characteristics make it virtual impossible to use satellite images or aerial photographs, while its frequent occurrence in steep ravines and cliffs makes the use of GPS practically impossible. However, in then field, carob trees are easy to recognize from a distance (using binoculars), since these trees have a very characteristic crown. Moreover, the species occurs mainly in hilly or mountainous landscape with distinctive landmarks. Due to these features, the boundaries of the carob populations could be drawn on detailed topographic maps (1:20000) during the surveys. Afterwards, these maps were digitized for further analysis, using GIS applications. This method proved to be time efficient, while maintaining a reasonable amount of detail. Processing the data of the surveys is continuing and will be made available soon.
THE WAY AHEAD
Besides the ecogeographical surveys, researchers
are assessing the genetic diversity of two species (Pinus brutia
and Ceratonia siliqua) and are initiating a genetic diversity study
on Pistacia atlantica. Furthermore, preparations have been made
to start socio-economic studies on the three species, while a specific
fire threat assessment on Pinus brutia is in its final stage. Outcomes
of these studies will be used to identify populations eligible for conservation
and to develop appropriate methodologies for priority FGR conservation
and use.
Crop Production & Protection Department, American University of Beirut, Beirut, Lebanon (Dr. Riad Baalbaki) Faculty of Agriculture and Food Sciences, American University of Beirut, Beirut, Lebanon (Dr. Salma Talhouk) Faculty of Literature and Human Science, Department of Geography, Saint Jozef University, Beirut, Lebanon (Dr. Jocelyne Adjizian Gerard) Rural Development and Natural Resources Directorate, Ministry of Agriculture, Beirut, Lebanon (Mr. Fady Asmar) The Arab Center for the Studies of Arid Zones and Dry Lands, Damascus, Syria. (Dr. Mohammad S. Abido) Division of Scientific Research for Applied Forestry, Forestry Directorate, Ministry of Agriculture and Agrarian Reform, Damascus, Syria (Dr. Hassan Younes) Faculty of Agriculture, Tishreen University, Latakia, Syria (Dr. Mahmoud Ali and Dr. Wafa Choumane) |
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