Ecological Archives A020-048-A1

Thomas F. Cuffney, Robin A. Brightbill, Jason T. May, and Ian R. White. 2010. Responses of benthic macroinvertebrates to environmental changes associated with urbanization in nine metropolitan areas. Ecological Applications 20:1384–1401.

Appendix A. List of variables and their definitions for natural environmental setting, soils, topography, and ecoregions.

TABLE A1. Climate.

Variable

   

Definition

MAAT

 

Mean annual temperature, deg C, from DAYMET, for period 1980–1997

MT_JAN

 

Mean January temperature, deg C, from DAYMET, for period 1980–1997

MT_FEB

 

Mean February temperature, deg C, from DAYMET, for period 1980–1997

MT_MAR

 

Mean March temperature, deg C, from DAYMET, for period 1980–1997

MT_APR

 

Mean April temperature, deg C, from DAYMET, for period 1980–1997

MT_MAY

 

Mean May temperature, deg C, from DAYMET, for period 1980–1997

MT_JUN

 

Mean June temperature, deg C, from DAYMET, for period 1980–1997

MT_JUL

 

Mean July temperature, deg C, from DAYMET, for period 1980–1997

MT_AUG

 

Mean August temperature, deg C, from DAYMET, for period 1980–1997

MT_SEP

 

Mean September temperature, deg C, from DAYMET, for period 1980–1997

MT_OCT

 

Mean October temperature, deg C, from DAYMET, for period 1980–1997

MT_NOV

 

Mean November temperature, deg C, from DAYMET, for period 1980–1997

MT_DEC

 

Mean December temperature, deg C, from DAYMET, for period 1980–1997

MAP

 

Total annual precipitation, cm, from DAYMET, for period 1980–1997

MP_JAN

 

Total January precipitation, cm, from DAYMET, for period 1980–1997

MP_FEB

 

Total February precipitation, cm, from DAYMET, for period 1980–1997

MP_MAR

 

Total March precipitation, cm, from DAYMET, for period 1980–1997

MP_APR

 

Total April precipitation, cm, from DAYMET, for period 1980–1997

MP_MAY

 

Total May precipitation, cm, from DAYMET, for period 1980–1997

MP_JUN

 

Total June precipitation, cm, from DAYMET, for period 1980–1997

MP_JUL

 

Total July precipitation, cm, from DAYMET, for period 1980–1997

MP_AUG

 

Total August precipitation, cm, from DAYMET, for period 1980–1997

MP_SEP

 

Total September precipitation, cm, from DAYMET, for period 1980–1997

MP_OCT

 

Total October precipitation, cm, from DAYMET, for period 1980–1997

MP_NOV

 

Total November precipitation, cm, from DAYMET, for period 1980–1997

MP_DEC

 

Total December precipitation, cm, from DAYMET, for period 1980–1997


     

TABLE A2. Soils.

Variable

   

Definition

AWCH

 

Mmean high range available water capacity (unitless)

AWCL

 

Mean low range available water capacity (unitless)

CLYAVE

 

Mean percentage clay (%)

KFCAVE

 

Mean soil erodibiity factor (K factor) including rock fragments (unitless)

ORMH

 

Mean high range organic matter (%)

ORML

 

Mean low range organic matter (%)

PERH

 

Mean high range permeability (cm/h)

PERL

 

Mean low range permeability (cm/h)

PTEXTUR0

 

Water (%)

PTEXTUR1

 

Simplified USDA soil texture classification (Shirazi), coarse (%)

PTEXTUR2

 

Simplified USDA soil texture classification (Shirazi), moderately coarse (%)

PTEXTUR3

 

Simplified USDA soil texture classification (Shirazi), medium coarse (%)

PTEXTUR4

 

Simplified USDA soil texture classification (Shirazi), moderately fine (%)

PTEXTUR5

 

Simplified USDA soil texture classification (Shirazi), fine (%)

P_HSG_1

 

Hydrologic soil group A, min. infiltration rate 8-12 mm/h (%)

P_HSG_2

 

Hydrologic soil group B, min. infiltration rate 4-8 mm/h (%)

P_HSG_3

 

Hydrologic soil group C, min. infiltration rate 1-4 mm/h (%)

P_HSG_4

 

Hydrologic soil group D, min. infiltration rate 0-1 mm/h (%)

P_HSG_5

 

Hydrologic soil group - water (%)

SNDH

 

Mean high range sand (%)

SNDL

 

Mean low range sand (%)

WTDH

 

Mean high range depth to water table (m)

WTDL

 

Mean low range depth to water table (m)

SOC100CM

 

Soil organic carbon, first 100 cm soil depth (g/m2)

SOC30CM

 

Soil organic carbon, first 30 cm soil depth (g/m2)


 

TABLE A3.  Topography.

Variable

 

Definition

DA_km

   

Drainage area of basin (km2)

MIN_ELEV

 

Minimum watershed elevation (meters)

MAX_ELEV

 

Maximum watershed elevation (meters)

MEANELEV

 

Mean watershed elevation (meters)

RELIEF

 

Watershed relief (maximum-minimum elevation) (meters)

MIDPOINT

 

Midpoint elevation = (minimum + maximum)/2

P_FLATLOW

 

Proportion of watershed area that is flat (slope < 1%) and low (elevation < midpoint)

P_FLATUP

 

Proportion of watershed area that is flat (slope < 1%) and upland (elevation ≥ midpoint)

P_FLAT

 

Proportion of watershed area that is flat (slope < 1%)

SLOPE_X

 

Mean watershed slope (%)

WET_MEAN

 

Mean value of wetness index across all cells in watershed (ln(watershed area above cell/gradient of upstream cells))

WET_STD

 

Standard deviation of wetness index across all cells in watershed (ln(watershed area above cell/gradient of upstream cells))


 

TABLE A4.  Ecoregions.

Variable

 

Definition

ECO_1

   

Percent basin in EPA Level III ecoregion 1 (Coast Range)

ECO_3

 

Percent basin in EPA Level III ecoregion 3 (Willamette Valley)

ECO_4

 

Percent basin in EPA Level III ecoregion 4 (Cascades)

ECO_13

 

Percent basin in EPA Level III ecoregion 13 (Central Basin and Range)

ECO_19

 

Percent basin in EPA Level III ecoregion 19 (Wasatch and Uinta Mountains)

ECO_25

 

Percent basin in EPA Level III ecoregion 25 (High Plains)

ECO_26

 

Percent basin in EPA Level III ecoregion 26 (Southwestern Tablelands)

ECO_29

 

Percent basin in EPA Level III ecoregion 29 (Cross Timbers)

ECO_32

 

Percent basin in EPA Level III ecoregion 32 (Texas Blackland Prairies)

ECO_33

 

Percent basin in EPA Level III ecoregion 33 (East Central Texas Plains)

ECO_45

 

Percent basin in EPA Level III ecoregion 45 (Piedmont)

ECO_51

 

Percent basin in EPA Level III ecoregion 51 (North Central Hardwood Forests)

ECO_53

 

Percent basin in EPA Level III ecoregion 53 (Southeastern Wisconsin Till Plains)

ECO_54

 

Percent basin in EPA Level III ecoregion 54 (Central Corn Belt Plains)

ECO_58

 

Percent basin in EPA Level III ecoregion 58 (Northeastern Highlands)

ECO_59

 

Percent basin in EPA Level III ecoregion 59 (Northeastern Coastal Zone)

ECO_67

 

Percent basin in EPA Level III ecoregion 68 (Southwestern Appalachians)

ECO_68

 

Percent basin in EPA Level III ecoregion 69 (Central Appalachians)


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