Appendix B. A presence and absence matrix for pond communities. Ponds are arranged in order of decreasing PC1 scores. The following taxonomic orders are indicated by their first three letters except where noted: Acariformes, Anura, Arhynchobdellida, Basommatophora, Caudata, Coleoptera, Diptera, Ephemeroptera, Hemiptera, Isopoda, Lepidoptera, Lumbricina, Lumbriculida (LUB), Megaloptera, Odonata, Plecoptera, Trichoptera, Tubificida, and Veneroida.
Order Taxon u-4 x-7 x-9 t-5 v-2 y-3 t-2 z-5 w-1 x-8 w-4 t-1 y-7 y-4 CAU
Ambystomatidae Ambystoma maculatum
1
1
1
1
1
1
1
1
1
0
1
0
0
0
ISO
Asellidae Asellus
1
1
1
1
1
0
1
0
1
1
1
0
0
0
DIP
Chironomidae Chironomus
0
1
1
1
1
0
1
1
1
1
0
1
0
0
LUB
Lumbriculidae Lumbriculus variegatus
1
1
1
1
1
1
1
0
0
0
1
0
0
0
COL
Dytiscidae Hydroporus
1
1
1
1
0
1
1
0
0
1
0
0
1
0
COL
Dytiscidae Dytiscus
1
1
1
1
1
0
1
0
1
0
0
0
0
0
TRI
Limnephilidae Limnephilus
1
1
1
1
1
1
0
0
0
1
0
0
0
0
ANU
Ranidae Rana sylvatica
0
1
1
1
1
0
0
1
1
0
0
1
0
0
DIP
Chaoboridae Chaoborus
0
1
1
1
1
0
0
1
1
0
0
0
0
0
CAU
Salamandridae Notophthalmus viridescens
0
1
1
0
1
0
1
1
1
0
0
0
0
0
VEN
Sphaeriidae Pisidium
1
0
1
0
0
1
1
0
0
0
1
0
0
1
DIP
Chironomidae Endochironomus
0
1
1
0
0
0
0
1
1
1
0
1
0
0
DIP
Chironomidae Zavrelimyia
1
1
0
1
1
0
0
0
0
0
0
0
0
1
COL
Dytiscidae Acilius
0
0
0
1
0
1
0
1
1
0
0
1
0
0
ODO
Lestidae Lestes
1
1
1
1
0
0
0
0
0
0
0
0
0
0
ODO
Libellulidae Sympetrum
1
1
1
1
0
0
0
0
0
0
0
0
0
0
COL
Dytiscidae Agabus
1
1
0
1
0
1
0
0
0
0
0
0
0
0
ARH
Erpobdellidae Erpobdella
1
1
1
0
0
0
1
0
0
0
0
0
0
0
ANU
Hylidae Pseudacris crucifer
1
1
0
1
0
0
0
1
0
0
0
0
0
0
COL
Dytiscidae Hydrovatus
0
1
1
1
0
0
1
0
0
0
0
0
0
0
COL
Dytiscidae Agabetes
0
1
0
1
0
0
1
0
1
0
0
0
0
0
CAU
Ambystomatidae Ambystoma opacum
0
0
1
1
1
0
0
0
0
0
1
0
0
0
COL
Dytiscidae Oreodytes
0
1
0
1
0
1
0
0
0
0
0
1
0
0
TRI
Polycentropidae Polycentropus
1
1
0
1
0
0
0
0
0
0
0
0
0
0
HEM
Corixidae Sigara
0
1
1
1
0
0
0
0
0
0
0
0
0
0
ANU
Hylidae Hyla versicolor
0
1
1
1
0
0
0
0
0
0
0
0
0
0
TUB
Naididae Nais simplex
1
0
0
0
1
0
1
0
0
0
0
0
0
0
BAS
Planorbidae Menetus dilatatus
0
1
0
0
1
0
1
0
0
0
0
0
0
0
LUM
1
0
0
0
1
0
0
1
0
0
0
0
0
0
DIP
Chironomidae Doithrix
0
0
1
1
0
0
0
0
0
0
1
0
0
0
ACA
Hydryphantidae Pseudohydryphantes
0
1
0
0
0
0
0
0
0
1
0
0
0
1
COL
Dytiscidae Coptotomus
1
0
1
0
0
0
0
0
0
0
0
0
0
0
TRI
Phryganeidae Ptilostomis
1
0
1
0
0
0
0
0
0
0
0
0
0
0
COL
Dytiscidae Celina
0
1
1
0
0
0
0
0
0
0
0
0
0
0
COL
Dytiscidae Rhantus
0
1
1
0
0
0
0
0
0
0
0
0
0
0
ANU
Bufonidae Bufo americanus
0
1
1
0
0
0
0
0
0
0
0
0
0
0
DIP
Chironomidae Polypedilum
0
1
0
1
0
0
0
0
0
0
0
0
0
0
MEG
Corydalidae Chauliodes
0
1
0
1
0
0
0
0
0
0
0
0
0
0
VEN
Sphaeriidae Musculium
1
0
0
0
1
0
0
0
0
0
0
0
0
0
COL
Dytiscidae Copelatus
0
1
0
0
1
0
0
0
0
0
0
0
0
0
COL
Dytiscidae Matus
0
0
1
1
0
0
0
0
0
0
0
0
0
0
COL
Haliplidae Haliplus
0
1
0
0
1
0
0
0
0
0
0
0
0
0
TUB
Naididae Chaetogaster
1
0
0
0
0
0
1
0
0
0
0
0
0
0
DIP
Chironomidae Psilometriocnemus
0
0
1
0
0
1
0
0
0
0
0
0
0
0
BAS
Planorbidae Gyraulus parvus
0
0
0
0
1
0
1
0
0
0
0
0
0
0
ACA
Hydryphantidae taxa A
0
0
0
0
0
0
0
1
0
1
0
0
0
0
DIP
Chironomidae Epoicocladius
1
0
0
0
0
0
0
0
0
0
0
0
0
0
DIP
Chironomidae Parakiefferiella
1
0
0
0
0
0
0
0
0
0
0
0
0
0
EPH
Leptophlebiidae Habrophlebiodes
1
0
0
0
0
0
0
0
0
0
0
0
0
0
EPH
Siphlonuridae Siphlonurus
1
0
0
0
0
0
0
0
0
0
0
0
0
0
EPH
Siphlonuridae Ameletus
1
0
0
0
0
0
0
0
0
0
0
0
0
0
PLE
Leuctridae Leuctra
1
0
0
0
0
0
0
0
0
0
0
0
0
0
PLE
Perlodidae Isogenoides
1
0
0
0
0
0
0
0
0
0
0
0
0
0
TRI
Phryganeidae Oligostomis
1
0
0
0
0
0
0
0
0
0
0
0
0
0
BAS
Lymnaeidae Fossaria parva
1
0
0
0
0
0
0
0
0
0
0
0
0
0
BAS
Physidae Physa
1
0
0
0
0
0
0
0
0
0
0
0
0
0
COL
Dytiscidae Brachyvatus
0
1
0
0
0
0
0
0
0
0
0
0
0
0
COL
Hydrophilidae Hydrobius
0
1
0
0
0
0
0
0
0
0
0
0
0
0
COL
Scirtidae Scirtes
0
1
0
0
0
0
0
0
0
0
0
0
0
0
DIP
Chironomidae Eukiefferiella
0
1
0
0
0
0
0
0
0
0
0
0
0
0
DIP
Chironomidae Nanocladius
0
1
0
0
0
0
0
0
0
0
0
0
0
0
HEM
Trepobatinae Trepobates
0
1
0
0
0
0
0
0
0
0
0
0
0
0
LEP
Pyralidae Crambus
0
1
0
0
0
0
0
0
0
0
0
0
0
0
COL
Dytiscidae Laccophilus
0
0
1
0
0
0
0
0
0
0
0
0
0
0
DIP
Chironomidae Cryptotendipes
0
0
1
0
0
0
0
0
0
0
0
0
0
0
DIP
Chironomidae Larsia
0
0
1
0
0
0
0
0
0
0
0
0
0
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