The Big Thompson Subbasin

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Tracked elements of biodiversity include animals, plants, and natural communities that are uncommon either globally or within the state of Colorado. The list below includes all wetland and riparian dependent elements found within the subbasin and the count of known occurrences.

• Heritage Program Ranking System
• CNHP Tracking Lists for all Elements

• Amphibians

State Scientific Name	State Common Name	GRank	SRank	Count
Anaxyrus boreas pop. 1	Boreal Toad (Southern Rocky Mountain Population)	G4T1Q	S1	28
Lithobates sylvatica	Wood Frog	G5	S3	5

• Birds

State Scientific Name	State Common Name	GRank	SRank	Count
Cypseloides niger	Black Swift	G4	S3B	8
Melanerpes lewis	Lewis's Woodpecker	G4	S4	4

• Fish

State Scientific Name	State Common Name	GRank	SRank	Count
Oncorhynchus clarkii stomias	Greenback Cutthroat Trout	G4T2T3	S2	37

• Insects

State Scientific Name	State Common Name	GRank	SRank	Count
Alloperla pilosa	A Stonefly	G3	S2	1
Mesocapnia frisoni	A Stonefly	G5	S1	1
Pictetiella expansa	A Stonefly	G3G4	S2	1

• Mammals

State Scientific Name	State Common Name	GRank	SRank	Count
Zapus hudsonius preblei	Meadow Jumping Mouse Subsp	G5T2	S1	8

• Mollusks

State Scientific Name	State Common Name	GRank	SRank	Count
Anodonta grandis	Giant Floater	G5	S2	1

• Natural Communities

State Scientific Name	State Common Name	GRank	SRank	Count
Alnus incana - Salix (monticola, lucida, ligulifolia) Shrubland	Thinleaf Alder-Mixed Willow Species	G3	S3	1
Alnus incana - Salix drummondiana Shrubland	Montane Riparian Shrubland	G3	S3	1
Alnus incana / Mesic Graminoids Shrubland	Montane Riparian Shrubland	G3	S2	2
Betula occidentalis / Mesic Graminoids Shrubland	Lower Montane Riparian Shrublands	G3	S2	1
Glyceria borealis Herbaceous Vegetation	Montane Emergent Wetland	G4	S2	1
Picea pungens / Alnus incana - Corylus cornuta Woodland	Foothills Riparian Forest	GU	S1	1
Populus angustifolia / Prunus virginiana Woodland	Narrowleaf Cottonwood/Common Chokecherry	G2Q	S2	4
Populus deltoides - (Salix amygdaloides) / Salix (exigua, interior) Woodland	Plains Cottonwood Riparian Woodland	G3G4	S3	1
Populus tremuloides / Acer glabrum Forest	Montane Riparian Forests	G1G2	S2	1
Populus tremuloides / Corylus cornuta Forest	Montane Riparian Forests	G3	S1	1
Potamogeton natans Herbaceous Vegetation	Montane Floating/Submergent Wetland	G5?	S1	1
Rhus trilobata Shrubland	Skunkbrush Riparian Shrubland	G2	S2	1
Salix drummondiana / Calamagrostis canadensis Shrubland	Lower Montane Willow Carrs	G3	S3	1
Salix geyeriana - Salix monticola / Calamagrostis canadensis Shrubland	Montane Willow Carrs	G3	S2	3
Salix monticola / Calamagrostis canadensis Shrubland	Montane Willow Carr	G3	S3	1
Salix monticola / Carex aquatilis Shrubland	Montane Riparian Willow Carr	G3	S2	1
Salix monticola / Carex utriculata Shrubland	Montane Riparian Willow Carr	G3	S3	1
Salix monticola / Mesic Graminoids Shrubland	Montane Riparian Willow Carr	G3	S3	6
Sibbaldia procumbens - Polygonum bistortoides Herbaceous Vegetation	Mesic Alpine Meadows	G3?	S1	1
Sparganium angustifolium Herbaceous Vegetation	Montane Floating/submergent Palustrine Wetlands	G4	S2	1
Utricularia macrorhiza Herbaceous Vegetation [Provisional]		G5	S1	1

• Vascular Plants

State Scientific Name	State Common Name	GRank	SRank	Count
Agastache foeniculum	lavender hyssop	G5	S1	3
Callitriche heterophylla	large water-starwort	G5	S1	1
Carex peckii	Peck sedge	G5	S1	2
Isoetes setacea ssp. muricata	spiny-spored quillwort	G5?T5?	S2	1
Juncus tweedyi	Tweedy's rush	G3Q	S1	1
Juncus vaseyi	Vasey bulrush	G5	S1	5
Liatris ligulistylis	gay-feather	G5?	S2	2
Listera convallarioides	Broad-leaved twayblade	G5	S2	4
Mimulus gemmiparus	Rocky Mountain monkeyflower	G1	S1	5
Naumburgia thyrsiflora	tufted loosestrife	G5	S1	9
Parnassia kotzebuei	Kotzebue's grass-of-parnassus	G5	S2	2
Salix serissima	autumn willow	G5	S1	13
Sisyrinchium pallidum	Pale blue-eyed grass	G3	S2	1