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strategies, behavioral <br />mechaiisms <br />~. Fregnency and duration Number of low pulses witlin - Frequency° and magiutude of <br />of high and low pulses each water ~~ear soil moish~re stress for plants <br /> Mean or median duration of - Frequency° and duration of <br /> low pulses (days) anaerobic stress for plants <br /> Number of high pulses witlin - Availabilit<~ of floodplain <br /> each water year habitats for aquatic organsms <br /> Mean or median duuation of - Nuhient and organic matter <br /> ligh pulses (days) elchanges beriveen river and <br /> floodplain <br /> S~~btotczl -~~c~rnmeters - Soil nineral availabilit<~ <br /> - Access for waterbirds to <br /> feeding, resting, reproduction <br /> sites <br /> - Influences bedload truisport, <br /> chaimel sediment tel-hlres, and <br /> duration of substrate dish~rbance <br /> (ligh pulses) <br />5. Rate and frequency of Rise rates: Mean or median of - Drought stress on plants (falling <br />water condition changes all positive differences beriveen levels) <br /> consecutive daily values - Enhapment of organisms on <br /> Fall rates: Mean or median of islands, floodplains (rising <br /> all negative differences levels) <br /> beriveen consecutive daily - Desiccation stress on low- <br /> values mobility° streamedge (varial <br /> Number of hv_ drologic zone) organsms <br /> reversals <br /> b'~-rbtotal3 ~ararneters <br />The Nahire Conservancy with Smythe Scientific Software and Totten Software Design, April, <br />2005. Indicators of Hydrologic Alteration Version 7 User's Manual. <br />Appendix C. (cont.) Summary of Environmental Flow Component (EFC) Parameters and <br />their Ecos stem Influences <br />EFC TYPE HYDROLOGIC PARAMETERS ECOSYTEM INFLUENCES <br />1. Monthly low Mean or median values of low • Provide adequate habitat for <br />flows flows during each calendar aquatic organisms <br /> month • Maintain suitable water <br /> temperatures, <br /> Subtotal 12 pa~an~ete~•s~ dissolved oxygen, and water <br /> chemistry <br /> • Maintain water table levels <br /> in floodplain, soil <br /> moisture for plants <br /> • Provide drii~lcing water for <br /> terrestrial aiumals <br /> • Keep fish and amphibian <br /> eggs suspended <br /> • Enable fish to move to <br />54 <br />