a_species page (black walnut - (Juglans nigra))

black walnut (Juglans nigra) Family: Juglandaceae
Guild: opportunistic, long-lived intolerant
Functional Lifeform: large deciduous tree
Silvics Manual: Click here for black walnut
(Main Silvics Page: http://www.na.fs.fed.us/spfo/pubs/silvics_manual/table_of_contents.htm)

Life History Attributes & Disturbance Response

Ecological Attributes & Status of Species

Distribution Maps/Tables for black walnut:

Distribution Maps for black walnut: (Outputs will appear in new window)

Current-FIA

GISS

GFDL

Hadley

UKMO

CCC

Summary (All-5)

5-GCM Average

Distribution Tables for black walnut: (Outputs will appear in new window)

IV Change Average IV IV*Area Area Change Total Area(%) N-S Shift Potential Winners/Losers

Ecological Attributes and Status of black walnut:
(Output appears in Output Area: below)

Ecological Attributes Soil Elevation Climate

Output Area:

Juglans nigra Black Walnut Juglandaceae

FIA distributions (998 counties) quartiles: min 1st mean median 3rd max rank

Diameter, cm (4549 plots) 0.3 17.8 26.5 26.4 34.5 105.7 21

Growth Rate, cm2/yr (1453 plots) 0.1 8.2 17.0 14.4 22.5 101.7 40

Annual Temperature, �C 2.2 9.8 11.7 11.8 13.4 19.8 50

January Temperature, �C -14.1 -4.3 -1.7 -1.6 0.8 10.4 48

Precipitation, mm 534 920 1050 1040 1170 1930 55

Potential Evapotranspiration, mm/month 12.6 55.9 64.9 64.6 72.8 130.0 56

Maximum Elevation, m 15 261 422 337 464 2000 26

Slope, percent 0.0 5.0 11.8 9.1 15.8 49.8 26

pH 2.5 4.0 4.9 4.7 5.8 7.3 39

Permeability, cm/hr 0.3 1.0 1.7 1.4 2.0 12.5 66

Organic Matter, percent 0.9 1.8 2.7 2.3 3.0 20.7 34

Clay, percent 4.4 20.9 25.1 25.8 29.4 47.3 9

Water-Holding Capacity, cm/cm 3.6 6.2 7.8 7.4 9.4 12.1 28

Maps of Current FIA's IV, Predicted-Current IV (acc. to RTA Model) & Geographic Predictors

Maps of Predicted-Current IV, Predicted IV (GISS GCM), the Difference with Current & Potential Shifts (acc. to RTA Model)

Maps of Predicted-Current IV, Predicted IV (GFDL GCM), the Difference with Current & Potential Shifts (acc. to RTA Model

Maps of Predicted-Current IV, Predicted IV (Hadley GCM),the Difference with Current & Potential Shifts (acc. to RTA Model)

Maps of Predicted-Current IV, Predicted IV (UKMO GCM), the Difference with Current & Potential Shifts (acc. to RTA Model)

Maps of Predicted-Current IV, Predicted IV (CCC GCM), the Difference with Current & Potential Shifts (acc. to RTA Model)

Predicted IVs of Current & 5 GCM models for quick comparison

IV Change for all 5 Climate Change Scenarios

Average IV for all 5 Climate Change Scenarios

Area Weighted IV % change for all 5 Climate Change Scenarios

Area Change for all 5 Climate Change Scenarios

Percent of Total Area for all 5 Climate Change Scenarios

N-S Shift for all 5 Climate Change Scenarios

Sorted table of % Change of IV*Area averaged across all 5 Climate Change Scenarios

Statistical-range table of ecological attributes for some key variables

Chart of optimum IV range for pH and permeablility

Chart of optimum IV range for max. elevation and soil slope

Chart of optimum IV range for avg. annual temperature and annual precipitation

Average IV of all 5 GCMs.

FIA distributions (998 counties) quartiles:	min	1st	mean	median	3rd	max	rank
Diameter, cm (4549 plots)	0.3	17.8	26.5	26.4	34.5	105.7	21
Growth Rate, cm2/yr (1453 plots)	0.1	8.2	17.0	14.4	22.5	101.7	40
Annual Temperature, �C	2.2	9.8	11.7	11.8	13.4	19.8	50
January Temperature, �C	-14.1	-4.3	-1.7	-1.6	0.8	10.4	48
Precipitation, mm	534	920	1050	1040	1170	1930	55
Potential Evapotranspiration, mm/month	12.6	55.9	64.9	64.6	72.8	130.0	56
Maximum Elevation, m	15	261	422	337	464	2000	26
Slope, percent	0.0	5.0	11.8	9.1	15.8	49.8	26
pH	2.5	4.0	4.9	4.7	5.8	7.3	39
Permeability, cm/hr	0.3	1.0	1.7	1.4	2.0	12.5	66
Organic Matter, percent	0.9	1.8	2.7	2.3	3.0	20.7	34
Clay, percent	4.4	20.9	25.1	25.8	29.4	47.3	9
Water-Holding Capacity, cm/cm	3.6	6.2	7.8	7.4	9.4	12.1	28