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Appendices (continue)

Appendix 5.


General. This Appendix represents an up-dated and revised version of the earlier tables which appeared as Appendix 8 of the Report of the 5th Session of the Panel (1981). The Panel recognized that many of the priority ratings must be considered tentative, and in many cases information is inadequate to allow even a tentative rating to be made (see e.g. additional lists at the end of the present Appendix). Nevertheless, the present attempt should be useful in relating the priorities of various operations to each other and in indicating the many gaps in knowledge which exist. Periodic revision of the priorities will be needed in the light of the better information which it is hoped will be forthcoming from foresters and tree breeders all over the world.

Species importance rating (columns 1 to 3). The importance rating for a species is expected to remain constant over one to several decades, however, priority ratings for individual operations may change to reflect progress in genetic resources work. New species are also likely to be added to reflect new priorities, e.g. in the present table, species suitable for the production of energy are prominent and many such species have been added to those identified at earlier meetings of the Panel.

Scores.The following scores are used in columns 1–3:
 (1)highest=priority species for the end use specified;
(2) =of considerable importance for the end use specified;
(3) =of some actual importance, or with a potential value, for the end use specified.
End use.The importance ratings are divided between three categories of end use, as follows:
 Column 1, Industrial Wood. Wood used for saw logs, heavy construction, chip and particle board, pulp etc.
Column 2, Fuelwood. Firewood and wood used for the production of charcoal and energy.
Column 3, Other Uses. Posts, poles, shade, shelter and land stabilization, food, fodder, medicine, honey, gums, tannins etc.
Operational priority rating (columns 4–13).
 Four priority ratings are used, as follows:
(1)highest=urgent action recommended; work should start (or be continued) with immediate effect.
(2) =prompt action recommended; work should start within the next two biennia (1986/87; 1988/89).
(3) =action foreseen in the quinquennium 1990–1995, at the latest.
(4) =work already completed or activity adequately covered by existing schemes.

Relationship of operational priorities to species importance. Generally, individual species would not have a higher priority for a particular operation than for their importance rating, except in the case of conservation for endangered or vulnerable species. Other exceptions which exist, are those potentially valuable species, in which further study on distribution, variation and utilization is considered likely to lead to an up-grading of their species priority rating, either in their native habitat or as exotics; and those species used in breeding, for example, for disease resistance.

Species of importance rating 1 normally merit priority 1 in at least one operation; alternatively, they may have been classified 4 in at least one operation, thus indicating progress in work.

(E) signifies endangered with extinction or severe depletion of the gene pool.

(Additional lists on Argentina, Chile, Peru, Central America, Mauritius and Kenya/Tanzania and/or Somalia are found on pp. 78–79).

Column NBR1234567891011121314
OperationSpecies Priority RatingOperational priority rating 
SpeciesIndustrial WoodFuelwoodOther usesBotanicalGenecologicalCollection for TestingTesting (Provenance Trials)In situCollection for ConservationStorage as Seed etc.Ex Situ in Artificial StandsUse of Bulk SuppliesIndividual Selection and BreedingRemarks
Abies amabilis
2 34444-----4Internat. provenance trials in progress
A. bracteuta
3  42--2----- 
A. concolor
3  4444------ 
A. grandis
2 34444--4-44Internat. provenance trials in progress
A. lasiocarpa
2 34444------Internat. provenance trials in progress
A. procera
1  4444------Internat. provenance trials in progress
Alnus rubra
32 3222----32Seed in storage for international trials
Chamaecyparis nootkatensis
2 343332---23 
Cupressus arizonica
3  3333----32 
C. macrocarpa
3  3333------ 
Larix laricina
2  4444----32 
Larix lyallii
1 33334------ 
L. occidentalis
2  43442---2- 
Picea engelmannii
2  4444----24Internat. provenance trials in progress
P. glauca
1  444444--44Internat. provenance trials in progress
P. sitchensis
1  44441---44Internat. provenance trials in progress
Pinus albicaulis
3  333322-3-- 
P. attenuata
3  33-------3 
P. contorta
1  444444--44Internat. provenance trials in progress. Recent bulk collections above 62°N for Sweden
P. jeffreyi
3  4--------- 
P. lambertiana
3  44444-----Internat. provenance trials in progress
P. monticola
2  4444----33 
P. ponderosa
1  4444----44 
P. radiata
1  4444444444Internat. provenance trials/gene pool stands established
P. resinosa
1  44442--242 
Populus balsamifera
1  4344----3- 
P. tremuloides
1  43-------- 
Pseudotsuga menziesii
1  4444444411Internat. provenance trials in progress
P. macrocarpa
2  4222-----2 
Thuja plicata
1  4333----13 
Tsuga heterophylla
1  4242----12 
T. mertensiana
3  4444------ 
Abies balsamea
1 34323----33 
A. fraseri
3 343333---33 
2  4333----33 
Carya cordiformis
3  4333------ 
C. illinoensis
  14333------Of recent interest to China
C. ovata
3  4333------ 
Fraxinus americana
2  44443----- 
Juglans cinerea
3  42223--2--Ex situ required in Canada
J. nigra
2  42223--222
Larix laricina
2  4333----32 
Liquidambar styraciflua
2  4222----22 
Liriodendron tulipifera
1  44441---11 
Picea glauca
1  44444---44 
P. mariana
1  44444---44 
P. rubens
2  444444-432 
Platanus occidentalis
2  4222----22 
Pinus banksiana
1  44444---44 
P. clausa
3  44444---33 
Pinus rigida
  344433-4--4Provenances at Northern limit in Canada
Pinus echinata
2  4222----22 
P. elliottii
1  44444---44 
P. palustris
1  44444---44 
P. resinosa
1  4434434-4-Newfoundland and northern outliers
P. serotina
2  42223---33 
P. strobus
1  4444----44 
P. taeda
1  4444----44 
P. virginiana
2  4444----22 
Populus balsamifera
2  4222----32High potential for biomass on medium fertility soils
P. deltoides
1  44444---44 
P. tremuloides
1  4333----31 
Prunus serotina
2  43333--333Canadian populations at extremes of range
Quercus alba
12 33333--333
Q. borealis
32 44333---33 
Q. macrocarpa
32 33333----- 
Robinia pseudoacacia
31 4333------ 
Ulmus americana
3 343332-2333 
Taxodium ascendens
1  4223----3- 
T. distichum
1  4223----3- 

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