Great Basin Naturalist Memoirs


Early studies on the macroinvertebrates and zooplankton of Utah Lake were taxonomic in nature. Since the late 1960s, macroinvertebrates studies have concentrated on the Goshen Bay area of Utah Lake. The rocky shore macroinvertebrate community along the eastern shore of Goshen Bay is the most diverse and productive in Utah Lake (Toole 1973). The dominant organisms are the amphipod Hyatella azteca and the chironomid Dicrotendipes fumidus. Also present along the eastern shore is an extensive zone of the sponge Meyenia fluviatilis (Smith 1972). Two taxa, Chironomidae and Oligochaeta, dominate the silty-ooze community in the southern portion of Utah Lake (Barnes et al. 1974). The life histories and the microdistributional patterns of the two dominant chironomids found in the silt-ooze area of Goshen Bay, Tanypus stellatus and Chironomus frommeri, have been extensively studied by Shiozawa and Barnes 1976. The distribution of abundance of the zooplankton in Utah Lake has been studied for one summer (Hanson et al. 1974). Little is known about the dynamics of the zooplankton community in Utah Lake.