FRIENDS OF MOHAWK TRAIL STATE FOREST and the EASTERN NATIVE TREE SOCIETY
Report to Department of Conservation and Recreation 3-15-2004
Mohawk Trail State Forest - Computation of Rucker Index through 20 iterations.
Research team: Bob Leverett, John Knuerr, Gary Beluzo, John, Eichholz
First Level Calc	134.45	Second Level	131.67	Third Level	129.10
Species	Hgt	Species	Hgt	Species	Hgt		NOTES:
White pine	163.5	White pine	162.2	White pine	161.2		MTSF is home to:
White ash	147.4	White ash	144.8	White ash	144.5		9 tallest trees in Massachusetts
Sugar maple	138.0	Sugar maple	131.9	Sugar maple	130.6		15 state height champs for Massachusetts
Eastern hemlock	131.0	Northern red oak	130.1	Northern red oak	130.1		(noted in red.)
Northern red oak	130.6	American beech	128.7	Eastern hemlock	123.5		Third highest Rucker index in Northeast
American beech	130.0	Eastern hemlock	127.9	American beech	122.0		Tallest accurately measured white ash in
Bitternut hickory	128.4	Bitternut hickory	124.6	Bigtooth aspen	121.4		Northeast
Bigtooth aspen	127.7	American basswood	123.6	Black Cherry	120.9
American basswood	125.5	Bigtooth aspen	122.0	Bitternut hickory	118.6		A lot of work remains to refine the iterations
Red maple	122.4	Black cherry	120.9	Red maple	118.2		The index for 5th level and beyond will rise
Rucker Index	134.45		131.67		129.10		as more areas are search for the lesser
							contributing species. The index should
Fourth Level	127.68	Fifth Level	126.78	Sixth Level	125.84		hold to at least 115 through 30 iterations
Species	Hgt	Species	Hgt	Species	Hgt		and 100 beyond 1,000 iterations
White pine	160.5	White pine	160.1	White pine	158.2
White ash	143.2	White ash	141.5	White ash	141.3		We intend to add other measures as we
Sugar maple	129.7	Sugar maple	129.1	Sugar maple	127.7		progress through the research process
Northern red oak	127.3	Northern red oak	126.7	Northern red oak	125.2		Eventually all data will be part of a GIS
Eastern hemlock	122.9	Eastern hemlock	122.5	Bigtooth aspen	120.7		Database.
American beech	121.8	Bigtooth aspen	120.9	Eastern hemlock	121.1
Bigtooth aspen	121.0	Bitternut hickory	118.2	Bitternut hickory	118.2
Bitternut hickory	118.4	Black Cherry	116.4	Black Cherry	115.7
Black cherry	117.5	Red pine	116.2	American elm	115.6
American basswood	116.5	Black birch	116.2	Red spruce	114.7
Rucker Index	127.88		126.78		125.84
Seventh Level	124.39	Eighth Level	123.59	Ninth Level	122.60
Species	Hgt	Species	Hgt	Species	Hgt
White pine	157.8	White pine	157.4	White pine	156.6
White ash	141.1	White ash	140.3	White ash	140.3
Sugar maple	126.5	Sugar maple	125.7	Sugar maple	125.3
Northern red oak	123.7	Northern red oak	121.8	Northern red oak	121.3
Eastern hemlock	120.0	Eastern hemlock	119.8	Eastern hemlock	119.7
Bigtooth aspen	119.0	Bigtooth aspen	118.0	Bigtooth aspen	115.8
Black cherry	115.0	Black cherry	114.5	Black cherry	112.6
American Bass	114.2	Red maple	113.5	Red maple	111.8
Red Maple	113.6	American beech	112.7	Black Birch	111.3
American beech	113.0	Black birch	112.2	American basswood	111.3
Rucker Index	124.39		123.59		122.60
Tenth Level	121.10	Eleventh Level	120.40	Twelfth Level	119.53
Species	Hgt	Species	Hgt	Species	Hgt
White pine	155.0	White pine	153.8	White pine	153.7
White ash	139.2	White ash	138.8	White ash	138.5
Sugar maple	123.6	Sugar maple	123.5	Sugar maple	123.4
Northern red oak	120.2	Northern red oak	119.2	Northern red oak	117.7
Eastern hemlock	116.7	Eastern hemlock	115.7	Eastern hemlock	113.3
Bigtooth aspen	114.0	Red maple	111.5	Red maple	111.3
Red maple	111.7	Red pine	110.6	Black cherry	110.4
American Basswood	110.6	Black oak	110.5	American basswood	109.0
White birch	110.5	Black cherry	110.5	Shagbark hickory	109.0
American beech	109.5	Bitternut hickory	109.8	American basswood	109.0
Rucker Index	121.10	Rucker Index	120.40	Rucker Index	119.53
Thirteenth Level	118.76	Fourteen Level	117.99	Fiftheenth Level	117.41
Species	Hgt	Species	Hgt	Species	Hgt
White pine	153.3	White pine	153.1	White pine	153.0
White ash	138.4	White ash	138.3	White ash	138.3
Sugar maple	123.0	Sugar maple	122.7	Sugar maple	122.3
Northern red oak	117.4	Northern red oak	116.3	Northern red oak	116.1
Eastern hemlock	112.2	Eastern hemlock	111.2	Eastern hemlock	111.1
Red maple	111.2	Red maple	110.5	Red maple	109.9
Black cherry	108.8	Black cherry	108.3	Black cherry	108.0
American basswood	108.2	Black birch	106.8	Black birch	106.3
Red Spruce	107.7	Bigtooth aspen	106.6	American beech	104.6
Bigtooth aspen	107.4	Red pine	106.1	White birch	104.4
Rucker Index	118.76	Rucker Index	117.99	Rucker Index	117.41
Sixteenth Level	116.80	Seventeenth Level	116.24	Eighteenth Level	115.82
Species	Hgt	Species	Hgt	Species	Hgt
White pine	152.7	White pine	152.6	White pine	152.4
White ash	137.0	White ash	136.3	White ash	136.0
Sugar maple	122.2	Sugar maple	122.0	Sugar maple	122.0
Northern red oak	115.8	Northern red oak	115.2	Northern red oak	114.9
Eastern hemlock	109.7	Eastern hemlock	108.9	Red maple	108.7
Red maple	109.7	Red maple	109.2	Eastern hemlock	108.2
Black cherry	107.8	Black cherry	107.8	Black cherry	107.1
Black birch	106.3	Black birch	105.7	Black birch	105.0
Red spruce	104.2	Red pine	102.4	Yellow birch	102.1
Bitternut hickory	102.6	White birch	102.3	White oak	101.8
Rucker Index	116.80	Rucker Index	116.24	Rucker Index	115.82
Nineteenth Level	115.21	Twentieth Level	113.97
Species	Hgt	Species	Hgt
White pine	152.3	White pine	152.0
White ash	135.5	White ash	134.9
Sugar maple	122.0	Sugar maple	121.7
Northern red oak	113.7	Northern red oak	113.0
Eastern hemlock	107.6	Eastern hemlock	105.8
Red maple	108.5	Red maple	108.4
Black cherry	106.4	Black cherry	106.1
Black birch	103.8	Black birch	102.6
Yellow birch	101.8	Shagbark hickory	100.3
American beech	100.5	Cottonwood	95.0
Rucker Index	115.21	Rucker Index	113.97