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The species inventory from these investigations is presented in Table 2.8-1. The. <br />results are only qualitative, as describing population. dynamics of [he species <br />collected was not a goal. The taxonomic level to identify each specimen was <br />based on the level required to substantiate lentic or lotic habitat preference. <br />This usually required Family, Genus and species. Habitat requirements for each <br />species are also denoted in Table 2.8-1. <br />As the results in Table 2.8-1 and Map M44 indicate, there are no "perennial" <br />streams located within the proposed mine plan area requiring protection and buf- <br />fer zones. This was determined by [he absence of an assemblage of two (2) or <br />more species of arthropods or molluscan animals dependent upon flowing water <br />(i.e. obligate rheophiles) that are longer than 2 millimeters in length at some <br />stage in their life cycle spent in flowing water. Only two (2) obligate rheo- <br />philes (Mariah, 1980) were collected and identified within or adjacent to the <br />proposed mine plan area. These included Simulium sp. of [he blackfly family (Si- <br />muliidae) and Hesperophylax sp. of [he caddisfly order (Trichoptera). <br />• While some of the other mac roinvertebrates sampled can occur in flowing water <br />(lotic environments) they are not dependent on it and can tolerate reduced flow <br />for all or part of their aquatic stages. They are also found in lentic habitats <br />without flow. Many of the specimens sampled clearly are indicative of still <br />water (lentic environments) and are uncommon in lotic conditions except in slack <br />water areas. These results are commensurate with the kind of drainages involved, <br />i.e. intermittent upland drainages. <br />The representatives of the blackfly family (Simulium sp.) were only obtained in <br />No-Name Gulch while the members of the caddisfly order (Trichoptera), Hesperophy- <br />lax sp., were found only in Flume Gulch. Therefore only one (1) representative <br />of an obligate rheophile species was sampled from each drainage. <br />Specific drainage features, habitat types sampled and a full interpretation of <br />the taxonomic results are discussed in Appendix J, Aquatic communities. <br />!I <br />i. <br />2-578 <br />