Download Full PDF - 30.01 MB - The Society of Irish Foresters
Download Full PDF - 30.01 MB - The Society of Irish Foresters Download Full PDF - 30.01 MB - The Society of Irish Foresters
The Society of Irish Foresters The Society ofIrish Foresters was founded in 1942 to advance and spread in Ireland the knowledge of forestry in all its aspects. The main activities 0/ the society centre around: (a) Annual study tour (b) Indoor and field meetings-on forestry topics (c) Production of two issues annually of Society's journal "Irish Forestry" (d) Annual Forest Walks held on 2nd Sunday of September There are three types a/membership: (a) Technical: Persons employed full time in forestry or in a closely connected branch of natural science, or who have been so employed for 5 years or persons who have a degree or diploma in forestry. Annual Subscription £4.00 (b) Associate: Persons not qualified for technical membership but who are desirous of promoting the objectives of the Society. Annual Subscription £3.50 (c) Student: Persons studying forestry at universities, schools or colleges. Annual Subscription £2.00 In all cases membership is subject to the approval ofthe council of the society. Enquiries regarding membership or Society activities, should be made to: Honorary Secretary, c/o Royal Dublin Society, Dublin 4. Submissions to the journal will be considered for publication and should be addressed to: Dr. E. P. Farrell, Editor, Irish Forestry, Department of Agricultural Chemistry and Soil Science, University College, Belfield, Dublin 4. The attention of contributors is drawn to "Notes for the Assistance of Contributors" on page 70. Sales and advertising are handled by: Mr. M. O'Brien, Business Editor, 17 Watson Road, Killiney, Co. Dublin. Tel. 01-867751.
7 The Importance of Lodgepole Pine in Irish Forestry J. O'DRISCOLL Forest and Wildlife Service, Sidmonton Place, Bray, Co. Wicklow. CLASSIFlCA nON The genus Pinus, of which Pinus contorta is a member, is one of the most widely distributed genera in the northern hemisphere. It contains over 90 species extending from the polar region to the tropics. It is the only northern hemisphere genus which occurs naturally south of the equator (Wright 1962). Within this very large genus, Pinus contorta belongs to the subgenus Pinus or hard pines and within this subgenus to the subsection contortae. Allied to it within this subsection, are Pinus divericata (banksiana), P. l'irginiana and P. clausa, all of which are native to North America. Two of these species are found in eastern North America and the other two in western North America (Critchfield and Little 1966). PALEOHISTORY The earliest recorded presence of Pinus contorta on the North American continent was 26 million years ago during the Miocene period. It did not become widely distributed until the Pleistocene period, 1.5 million years ago, when records indicate that it may have extended 100-400km further north than its present day range. During the Wisconsin ice age much of the northern distribution of the species was wiped out. As the ice sheet did not extend further south than northern Washington the species widespread distribution in western United States was not greatly affected. This southern refugium may have been the base from which it reoccupied its present northern range. Fossil records show that the species was the first to colonise the glaciated terrain in both the Fraser River lowlands and in the Rocky Mountains following the retreat of the ice sheet. It has not however, been conslusively shown that the southern refugia were the only ones from which the species 1 Presented at "Symposium on Lodgepole Pine", Pomeroy, Co. Tyrone, April, 1979. IRISH FORESTRY, 1980 Vol. 37, No. 1: '7-22
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<strong>The</strong> <strong>Society</strong> <strong>of</strong> <strong>Irish</strong> <strong>Foresters</strong><br />
<strong>The</strong> <strong>Society</strong> <strong>of</strong><strong>Irish</strong> <strong>Foresters</strong> was founded in 1942 to advance and<br />
spread in Ireland the knowledge <strong>of</strong> forestry in all its aspects.<br />
<strong>The</strong> main activities 0/ the society centre around:<br />
(a) Annual study tour<br />
(b) Indoor and field meetings-on forestry topics<br />
(c) Production <strong>of</strong> two issues annually <strong>of</strong> <strong>Society</strong>'s journal "<strong>Irish</strong><br />
Forestry"<br />
(d) Annual Forest Walks held on 2nd Sunday <strong>of</strong> September<br />
<strong>The</strong>re are three types a/membership:<br />
(a) Technical:<br />
Persons employed full time in forestry or in a closely connected<br />
branch <strong>of</strong> natural science, or who have been so employed for 5<br />
years or persons who have a degree or diploma in forestry.<br />
Annual Subscription £4.00<br />
(b) Associate:<br />
Persons not qualified for technical membership but who are<br />
desirous <strong>of</strong> promoting the objectives <strong>of</strong> the <strong>Society</strong>.<br />
Annual Subscription £3.50<br />
(c) Student:<br />
Persons studying forestry at universities, schools or colleges.<br />
Annual Subscription £2.00<br />
In all cases membership is subject to the approval <strong>of</strong>the council <strong>of</strong><br />
the society. Enquiries regarding membership or <strong>Society</strong> activities,<br />
should be made to: Honorary Secretary, c/o Royal Dublin <strong>Society</strong>,<br />
Dublin 4.<br />
Submissions to the journal will be considered for publication and<br />
should be addressed to: Dr. E. P. Farrell, Editor, <strong>Irish</strong> Forestry,<br />
Department <strong>of</strong> Agricultural Chemistry and Soil Science, University<br />
College, Belfield, Dublin 4. <strong>The</strong> attention <strong>of</strong> contributors is drawn<br />
to "Notes for the Assistance <strong>of</strong> Contributors" on page 70.<br />
Sales and advertising are handled by: Mr. M. O'Brien, Business<br />
Editor, 17 Watson Road, Killiney, Co. Dublin. Tel. 01-867751.
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