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<br />v-l <br /> <br />/.") <br /> <br />"d' <br /> <br />\"'~ <br /> <br />c.,::) <br /> <br />Each agr-icultur-al unit pr-edominantly consisted of a contiguous far-m <br />unit oper-ated by one individual. <br /> <br />Each inventor-y deter-mined the quality and quantity of the habitat for- <br />base I I ne i nfor-mat Ion. Hab i tat qua Ii ty i nc I uded eva I uat i ng the amount <br />of per-enn i al vegetati ve cover- and avai lab i I i ty of food and hab i tat <br />diver-sity. <br /> <br />The following habitat types or- conditions wer-e mapped and quantities <br />measur-ed: agr-icultur-al cr-ops (by kind), saltbr-ush, sagebr-ush, <br />gr-easewood, tamar-isk, cottonwood, wi I low, mar-sh (by type), and edge <br />(boundar-ies, field bor-der-s, etc.). <br /> <br />Tota I hab i tat changes due to the on-far-m sa Ii n i ty c:ontr-o I pr-ogr-am wer-e <br />deter-mined, using a r-atio of habitat change to acr-es tr-eated times the <br />total acr-eage of agr-icultur-al unit tr-eated. <br /> <br />Data was ana I yzed fo II ow i ng comp I et i on of each samp II ng cyc I e and upon <br />completion of planned salinity contr-ol. <br /> <br />In 1988, the Final Repor-t entitled, Gr-and Valley Sal initv Contr-ol <br />Pr-o,iect Monitor-ina and Evaluation Pr-oar-am stated the agr-icultur-al <br />units wer-e r-emapped thr-ee to five year-s after- installation of planned <br />pr-actices. This r-epor-t r-epr-esents the completion ,of all data <br />collection and final analysis for- the wi Idl ife habitat monitor-ing and <br />evaluation effor-t. <br /> <br />RESULTS <br /> <br />Data compar-ison of habitat change fr-om one year- after- constr-uction to <br />thr-ee to five year-s after- constr-uction showed the following r-esults. <br />The second samp ling cyc I e (3-5 year-s after- constr-uc:t i on) began in Ju I y <br />1987. Table 13 shows the r-esults of data collected dur-ing that sample <br />per-iod. All 77 agr-icultur-al units had compar-ative data collected. <br />Cr-opland decr-eased 127.3 acr-es, or- appr-oximately 4.5 per-cent. AI I <br />other- vegetated habitat types incr-eased 101.6 acr-es or- ar-ound 10.6 <br />per-cent. Most of this incr-ease is attr-ibuted to previously cultivated <br />cr-opland that was idle at the time this last monitor-ing visit was <br />made. The major-ity of this Idle cr-opland had gr-own over- to annual and <br />per-ennial weeds and was classified as annual her-baceous or- per-ennial <br />her-baceous habitat types. <br /> <br />Discounting the change in habitat types due to idle far-m gr-ound, <br />this monitor-ing per-iod initially indicates GVSP aci:ivities wer-e <br />r-esponsible for- an incr-ease in cr-opland of 26.0 acres, a decr-ease in <br />other- her-baceous habitat types of 36.2 acr-es, and a decr-ease in <br />wetland by 5.4 acr-es. The activities accounted for a loss of ar-ound <br />10,124 feet of edge, and a decr-ease in the diver-sity index by 1.0 <br />per-cent. <br /> <br />The thr-ee to five year-s after- constr-uction data indicates ther-e was <br />some r-ehabi I itation of habitat par-ameter-s that wer-e pr-eviously <br />r-ecor-ded as lost due to GVSP and CRSC activities. It was estimated <br /> <br />44 <br />