. Assessment of aquatic habitats on the Matador Ranch Phillips Co., MT. Aquatic invertebrates; Stream ecology; Watershed ecology. Lone Tree Pool on the Coulee (Spring?) The outflow was not located but was assumed to be feeding this perennial pool from sub- surface. This pool (-40m long x 4m wide) is densely surrounded by Scirpus sp (Big Stem Bulrush) and remnants of dying cattails (Typha latifolia). The surface temperature of the pool was 23°C / 73°F, the sediments are silt and anoxic organic materials (Omg/1 of oxygen at the sediment surface), thus most of the invertebrates are clinging to th
. Assessment of aquatic habitats on the Matador Ranch Phillips Co., MT. Aquatic invertebrates; Stream ecology; Watershed ecology. Lone Tree Pool on the Coulee (Spring?) The outflow was not located but was assumed to be feeding this perennial pool from sub- surface. This pool (-40m long x 4m wide) is densely surrounded by Scirpus sp (Big Stem Bulrush) and remnants of dying cattails (Typha latifolia). The surface temperature of the pool was 23°C / 73°F, the sediments are silt and anoxic organic materials (Omg/1 of oxygen at the sediment surface), thus most of the invertebrates are clinging to the vegetation; only Oligochaeta worms and midges (chironomidae) were found in the sediments. Macroinvertebrate Community: This community of prairie stream invertebrates consists of the Prairie Pool assemblage (#12, Stagliano 2005). The community indicator species are characterized by tolerant, damselfly taxa, Coenagrion /Enallagma sp., Lestes and Ishnura, the crustaceans (Hyalella and Gammarus), many genera of the water boatman (Corixidae: Sigara alternate, Trichocorixa nais, and Corisella), the snails (Phy sella, Gyraulus, and Stagnicola), the mayfly , Callibaetis, and beetles (Oreodytes, Laccophilus, Hydroporus and Hygrotus).. Beaver Creek Pools #1 (see cover photo). These intermittent pools were °C / 74°F and have been recently inundated by thunderstorms and surface run-off flow, therefore the macroinvertebrates existing there are recent fly-in colonizers, and included the pioneering Hydrophilidae water beetles: Hydrobious and Berosus and backswimmer waterbugs: Notonecta, and waterboatmen, Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Stagliano, David M. ,author; Poole, Linda; Montana Natural Heritage Program; Montana Natural Resource Information System; University of Montana--Missoul
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