Ecological Archives A020-048-A4

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 D. List of variables and their definitions for invertebrate metrics.

TABLE D1. Invertebrate metrics.

Category

Variable

Definition

Richness

   
 

RICH

Total richness (number of non-ambiguous taxa)

 

EPTR

Richness composed of mayflies, stoneflies, and caddisflies

 

EPT_CHR

Ratio of EPT richness (EPTR) to midge richness (CHR)

 

EPEMR

Richness composed of mayflies

 

PLECOR

Richness composed of stoneflies

 

PTERYR

Richness composed of Pteronarcys

 

TRICHR

Richness composed of caddisflies

 

ODONOR

Richness composed of odonates

 

COLEOPR

Richness composed of Coleoptera

 

DIPR

Richness composed of Diptera

 

CHR

Richness composed of midges

 

ORTHOR

Richness composed of Orthocladinae midges

 

ORTHO_CHR

Ratio of orthoclad richness (ORTHOR) to midge richness (CHR)

 

TANYR

Richness composed of Tanytarsanii midges

 

TANY_CHR

Ratio of Tanytarsanii richness (TANYR) to midge richness (CHR)

 

NCHDIPR

Richness composed of non-midge Diptera

 

NONINSR

Richness composed of non-insects

 

ODIPNIR

Richness composed of non-midge Diptera and non-insects

 

MOLCRUR

Richness composed of molluscs and crustaceans

 

GASTROR

Richness composed of Gastropoda

 

BIVALR

Richness composed of Bivalvia

 

CORBICR

Richness composed of Corbicula

 

AMPHIR

Richness composed of Amphipoda

 

ISOPR

Richness composed of Isopoda

 

OLIGOR

Richness composed of Oligochaeta

% Richness

 
 

EPTRp

Perecntage of total richness composed of mayflies, stoneflies, and caddisflies

 

EPT_CHRp

Ratio of EPT perecntage richness (EPTRp) to midge perecntage richness (CHRp)

 

EPEMRp

Perecntage of total richness composed of mayflies

 

PLECORp

Perecntage of total richness composed of stoneflies

 

PTERYRp

Perecntage of total richness composed of Pteronarcys

 

TRICHRp

Perecntage of total richness composed of caddisflies

 

ODONORp

Perecntage of total richness composed of odonates

 

COLEOPRp

Perecntage of total richness composed of Coleoptera

 

DIPRp

Perecntage of total richness composed of Diptera

 

CHRp

Perecntage of total richness composed of midges

 

ORTHORp

Perecntage of total richness composed of Orthocladinae midges

 

ORTHO_CHRp

Ratio of orthoclad percentage richness (ORTHORp) to midge percentage richness (CHRp)

 

TANYRp

Perecntage of total richness composed of Tanytarsanii midges

 

TANY_CHRp

Ratio of Tanytarsanii percentage richness (TANYRp) to midge percentage richness (CHRp)

 

NCHDIPRp

Perecntage of total richness composed of non-midge Diptera

 

NONINSRp

Perecntage of total richness composed of non-insects

 

ODIPNIRp

Perecntage of total richness composed of non-midge Diptera and non-insects

 

MOLCRURp

Perecntage of total richness composed of molluscs and crustaceans

 

GASTRORp

Perecntage of total richness composed of Gastropoda

 

BIVALRp

Perecntage of total richness composed of Bivalvia

 

CORBICRp

Perecntage of total richness composed of Corbicula

 

AMPHIRp

Perecntage of total richness composed of Amphipoda

 

ISOPRp

Perecntage of total richness composed of Isopoda

 

OLIGORp

Perecntage of total richness composed of Oligochaeta

Abundance (density, number/m2)

 

ABUND

Total number (abundance) of non-ambiguous taxa in the sample

 

EPT

Abundance composed of mayflies, stoneflies, and caddisflies

 

EPT_CH

Ratio of EPT Abundance (EPT) to midge abundance (CH)

 

EPEM

Abundance composed of mayflies

 

PLECO

Abundance composed of stoneflies

 

PTERY

Abundance composed of Pteronarcys

 

TRICH

Abundance composed of caddisflies

 

ODONO

Abundance composed of odonates

 

COLEOP

Abundance composed of Coleoptera

 

DIP

Abundance composed of Diptera

 

CH

Abundance composed of midges

 

ORTHO

Abundance composed of Orthocladinae midges

 

ORTHO_CH

Ratio of orthoclad abundance (ORTHO) to midge abundance (CH)

 

TANY

Abundance composed of Tanytarsanii midges

 

TANY_CH

Ratio of Tanytarsanii abundance (TANY) to midge abundance (CH)

 

NCHDIP

Abundance composed of non-midge Diptera

 

NONINS

Abundance composed of non-insects

 

ODIPNI

Abundance composed of non-midge Diptera and non-insects

 

MOLCRU

Abundance composed of molluscs and crustaceans

 

GASTRO

Abundance composed of Gastropoda

 

BIVAL

Abundance composed of Bivalvia

 

CORBIC

Abundance composed of Corbicula

 

AMPHI

Abundance composed of Amphipoda

 

ISOP

Abundance composed of Isopoda

 

OLIGO

Abundance composed of Oligochaeta

% Abundance (density, number/m2)

 

EPTp

Percentage of total abundance composed of mayflies, stoneflies, and caddisflies

 

EPT_CHp

Ratio of EPT percentage of total abundance (EPTp) to midge percentage of total abundance (CHp)

 

EPEMp

Percentage of total abundance composed of mayflies

 

PLECOp

Percentage of total abundance composed of stoneflies

 

PTERYp

Percentage of total abundance composed of Pteronarcys

 

TRICHp

Percentage of total abundance composed of caddisflies

 

ODONOp

Percentage of total abundance composed of odonates

 

COLEOPp

Percentage of total abundance composed of Coleoptera

 

DIPp

Percentage of total abundance composed of Diptera

 

CHp

Percentage of total abundance composed of midges

 

ORTHOp

Percentage of total abundance composed of Orthocladinae midges

 

ORTHO_CHp

Ratio of orthoclad percentage of total abundance (ORTHOp) to midge percentage of total abundance (CHp)

 

TANYp

Percentage of total abundance composed of Tanytarsanii midges

 

TANY_CHp

Ratio of Tanytarsanii percentage of total abundance (TANYp) to midge percentage of total abundance (CHp)

 

NCHDIPp

Percentage of total abundance composed of non-midge Diptera

 

NONINSp

Percentage of total abundance composed of non-insects

 

ODIPNIp

Percentage of total abundance composed of non-midge Diptera and non-insects

 

MOLCRUp

Percentage of total abundance composed of molluscs and crustaceans

 

GASTROp

Percentage of total abundance composed of Gastropoda

 

BIVALp

Percentage of total abundance composed of Bivalvia

 

CORBICp

Percentage of total abundance composed of Corbicula

 

AMPHIp

Percentage of total abundance composed of Amphipoda

 

ISOPp

Percentage of total abundance composed of Isopoda

 

OLIGOp

Percentage of total abundance composed of Oligochaeta

Dominance

   
 

Dom1

Percentage of total abundance represented by the most abundant taxon

 

Dom1R

Number of. taxa in dominance class

 

Dom2

Percentage of total abundance represented by the two most abundant taxon

 

Dom2R

Number of taxa in dominance class

 

Dom3

Percentage of total abundance represented by the three most abundant taxon

 

Dom3R

Number of. taxa in dominance class

 

Dom4

Percentage of total abundance represented by the four most abundant taxon

 

Dom4R

Number of taxa in dominance class

 

Dom5

Percentage of total abundance represented by the five most abundant taxon

 

Dom5R

Number of taxa in dominance class

Dominant taxa and % abundance (density, number/m2)

 

Dom1

Percentage of total abundance represented by the most abundant taxon

 

TX1

Taxon name

 

Dom2

Percentage of total abundance represented by the 2nd most abundant taxon

 

TX2

Taxon name

 

Dom3

Percentage of total abundance represented by the 3rd most abundant taxon

 

TX3

Taxon name

 

Dom4

Percentage of total abundance represented by the 4th most abundant taxon

 

TX4

Taxon name

 

Dom5

Percentage of total abundance represented by the 5th most abundant taxon

 

TX5

Taxon name

Functional groups

 

   Richness

   
 

PA_rich

Richness composed of parasites

 

PR_rich

Richness composed of predators

 

OM_rich

Richness composed of omnivores

 

GC_rich

Richness composed of collector-gatherers

 

FC_rich

Richness composed of filtering-collectors

 

SC_rich

Richness composed of scrapers

 

SH_rich

Richness composed of shredders

 

PI_rich

Richness composed of piercers

   % Richness

 
 

pPA_rich

Percentage of total richness composed of parasites

 

pPR_rich

Percentage of total richness composed of predators

 

pOM_rich

Percentage of total richness composed of omnivores

 

pGC_rich

Percentage of total richness composed of collector-gatherers

 

pFC_rich

Percentage of total richness composed of filtering-collectors

 

pSC_rich

Percentage of total richness composed of scrapers

 

pSH_rich

Percentage of total richness composed of shredders

 

pPI_rich

Percentage of total richness composed of piercers

 

FG_rich_class

Percentage of richness that could be assigned a tolerance value

   Abundance (density, number/m2)

 

PA_abund

Total abundance composed of parasites

 

PR_abund

Total abundance composed of predators

 

OM_abund

Total abundance composed of omnivores

 

GC_abund

Total abundance composed of collector-gatherers

 

FC_abund

Total abundance composed of filtering-collectors

 

SC_abund

Total abundance composed of scrapers

 

SH_abund

Total abundance composed of shredders

 

PI_abund

Total abundance composed of piercers

   % Abundance

 
 

pPA_abund

Percentage of total abundance composed of parasites

 

pPR_abund

Percentage of total abundance composed of predators

 

pOM_abund

Percentage of total abundance composed of omnivores

 

pGC_abund

Percentage of total abundance composed of collector-gatherers

 

pFC_abund

Percentage of total abundance composed of filtering-collectors

 

pSC_abund

Percentage of total abundance composed of scrapers

 

pSH_abund

Percentage of total abundance composed of shredders

 

pPI_abund

Percentage of total abundance composed of piercers

 

FG_abund_class

Percentage of abundance that could be assigned to a functional group

Tolerance

   

   Richness

   
 

RichTOL

Average EPA tolerance values for sample based on richness

 

Intol_rich

Number of taxa in the intolerant class

 

Modtol_rich

Number of taxa in the moderately tolerant class

 

Tol_rich

Number of taxa in the tolerant class

   % Richness

 
 

Intol_richp

Percentage of taxa richness in the intolerant class

 

Modtol_richp

Percentage of taxa richness in the moderately tolerant class

 

Tol_richp

Percentage of taxa richness in the tolerant class

 

RICH_TOL_CLASS

Percentage of richness that could be assigned a tolerance value

   Abundance (no./m2)

 
 

AbundTOL

Abundance-weighted EPA tolerance value for sample

 

Intol_abund

Total abundance in the intolerant class

 

Modtol_abund

Total abundance in the moderately tolerant class

 

Tol_abund

Total abundance in the tolerant class

   % Abundance (density no./m2)

 

Intol_abundp

Percentage of abundance in the intolerant class

 

ModTol_abundp

Percentage of abundance in the moderately tolerant class

 

Tol_abundp

Percentage of abundance in the tolerant class

 

ABUND_TOL_CLASS

Percentage of abundance that could be assigned a tolerance value

Behavior classes

 

    Richness

   
 

cn_rich

Number of clinger taxa

 

cb_rich

Number of climber taxa

 

sp_rich

Number of sprawler taxa

 

bu_rich

Number of burrower taxa

 

sw_rich

Number of swimmer taxa

 

dv_rich

Number of diver taxa

 

sk_rich

Number of skater taxa

   % Richness

 
 

cn_richp

Percentage of richness composed of clinger taxa

 

cb_richp

Percentage of richness composed of climber taxa

 

sp_richp

Percentage of richness composed of sprawler taxa

 

bu_richp

Percentage of richness composed of burrower taxa

 

sw_richp

Percentage of richness composed of swimmer taxa

 

dv_richp

Percentage of richness composed of diver taxa

 

sk_richp

Percentage of richness composed of skater taxa

 

BEHAV_RICH_CLASS

Percentage of total taxa richness that was assigned a behavioral trait

   Abundance (no./m2)

 
 

cn_abund

Abundance of clinger taxa

 

cb_abund

Abundance of climber taxa

 

sp_abund

Abundance of sprawler taxa

 

bu_abund

Abundance of burrower taxa

 

sw_abund

Abundance of swimmer taxa

 

dv_abund

Abundance of diver taxa

 

sk_abund

 

   % Abundance (density no./m2)

 

cn_abundp

Percentage of abundance composed of clinger taxa

 

cb_abundp

Percentage of abundance composed of climber taxa

 

sp_abundp

Percentage of abundance composed of sprawler taxa

 

bu_abundp

Percentage of abundance composed of burrower taxa

 

sw_abundp

Percentage of abundance composed of swimmer taxa

 

dv_abundp

Percentage of abundance composed of diver taxa

 

sk_abundp

Percentage of abundance composed of skater taxa

 

BEHAV_Abund_Class

Percentage of total abundance that was assigned a behavioral trait

Ordination scores (non-metric multidimensional scaling, NMDS)

 

NMDS1

Axis-1 site score, 4th root transformation, Bray-Curtis similarity for RTH, Jaccard similarity for QMH samples

 

NMDS2

Axis-2 site score, 4th root transformation,
Bray-Curtis similarity for RTH, Jaccard similarity for QMH samples


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