Abstract
Cladophora glomerata is a widely distributed filamentous freshwater alga that hosts a complex microalgal epiphyte assemblage. We manipulated nutrients and epiphyte abundances to access their effects on epiphyte biomass, epiphyte species composition, and C. glomerata growth. C. glomerata did not grow in response to these manipulations. Similarly, nutrient and epiphyte removal treatments did not alter epiphyte biovolume. Epiphyte species composition, however, changed dramatically with nutrient enrichment. The epiphyte assemblage on unenriched C. glomerata was dominated by Epithemia sorex and Epithemia adnata, whereas the assemblage on enriched C. glomerata was dominated by Achnanthidium minutissimum, Nitzschia palea and Synedra spp. These results indicate that nutrients strongly structure epiphyte species composition. Interactions between C. glomerata and its epiphytes were not affected by epiphyte species composition in our experiment but may be when C. glomerata is actively growing.
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Benenati, P. L., J. P. Shannon & D. W. Blinn, 1998. Desiccation and recolonization of phytobenthos in a regulated desert river: Colorado River at Lees Ferry, Arizona, U.S.A. Regul. Rivers:Res. Mgmt 14: 519–532.
Bergey, E. A., C. A. Boettiger & V. H. Resh, 1995. Effects of water velocity on the architecture and epiphytes of Cladophora glomerata (Chlorophyta). J. Phycol. 31: 264–271.
Bronmark, C., 1985. Interactions between macrophytes, epiphytes and herbivores: an experimental approach. Oikos 45: 26–30.
Burkholder, J. M. & R. G. Wetzel, 1990. Epiphytic alkaline phosphatase on natural and artificial plants in an oligotrophic lake: re-evaluation of the role of macrophytes as a phosphorus source for epiphytes. Limnol. Oceanogr. 35: 736–746.
Busch, D. E. & S. G. Fisher, 1981. Metabolism of a desert stream. Freshwat. Biol. 11: 301–307.
Cattaneo, A., 1983. Grazing on epiphytes. Limnol. Oceanogr. 28: 124–132.
Chudyba, H., 1968. C. glomerata and concomitant algae in the River Skawa. Distribution and conditions of appearance. Acta Hydrobiol. 10: 39–84.
Deyoe, H., R. L. Lowe & J. C. Marks, 1992. Effects of nitrogen and phosphorus on the endosymbiont abundance of Rhopalodia gibba and Epithemia turgida (Bacillariophyceae). J. Phycol. 28: 773–777.
Dodds, W. K., 1991a. Community interactions between the filamentous alga C. glomerata (L.) Kutzing, its epiphytes and epiphyte grazers. Oecologia 85: 572–580.
Dodds, W. K., 1991b. Micro-environmental characteristics of filamentous algal communities in flowing freshwaters. Freshwat. Biol. 25: 199–209.
Dodds, W. K. 1991c. Factors associated with dominance of the filamentous green alga Cladophora glomerata. Wat. Res. 25: 1325–1332.
Dodds, W. K. & D. A. Gudder, 1992. The ecology of Cladophora. J. Phycol. 28: 415–427.
Dudley, T. L., 1992. Beneficial effects of herbivores on stream macroalgae via epiphyte removal. Oikos 65: 121–127.
Fairchild, G. W., R. L. Lowe & W. B. Richardson, 1985. Algal periphyton growth on nutrient-diffusing substrates: an in situ bioassay. Ecology 66: 465–472.
Floener, L. & H. Bothe, 1980. Nitrogen fixation in Rhopalodia gibba, a diatom containing blue-greenish inclusions symbiotically. In Schwemmler W. & H. E. A. Schwenk (eds), Endocytobiology, Endosymbiosis and Cell Biology. Vol. I. Walter de gruyter, Berlin, Germany: 514–552.
Haberyan, K. A. & O. K. Mhone, 1991. Algal communities near Cape Maclear, southern Lake Malawi, Africa. Hydrobiologia 215: 175–188.
Hardwick, G. G., D. W. Blinn & H. D. Usher, 1992. Epiphytic diatoms on Cladophora glomerata in the Colorado River, Arizona: Longitudinal and vertical distribution in a regulated river. The Southwestern Naturalist 37: 148–156.
Hawkes, H. A., 1964. Effects of domestic and industrial discharges of the ecology of riffles in Midland streams. In International Conference on Water Pollution Research. Pergamon Press, London: 293–317.
Hoffman, J. P. & L. E. Graham, 1984. Effects of selected physicochemical factors on growth and zoosporogenesis of Cladophora glomerata (Chlorophyta). J. Phycol. 20: 1–7.
Jao, C., 1944. Studies on the fresh-water algae of China XII. The attached algal communities of the Kialing River. Sinensia Acad. Sinica 15: 61–91.
Jonsson, G. S., 1987. The depth-distribution and biomass of epilithic periphyton in Lake Thingvallavatn, Iceland. Arch. Hydrobiol. 108: 531–547.
Kupferberg, S., 1997. Facilitation of periphyton production by tadpole grazing: functional differences between species. Freshwat. Biol. 37: 427–439.
Kupferberg, S. J., J. C. Marks & M. E. Power, 1994. Effects of variation in natural algal and detrital diets on larval anuran (Hyla regilla) life history. Copeia 2: 446–457.
Lowe, R. L., B. H. Rosen & J. C. Kingston, 1982. A comparison of epiphytes on Bangia atropurpurea (Rhodophyta) and Cladophora glomerata (Chlorophyta) from northern Lake Michigan. J. Great Lakes Res. 8: 164–168.
Luttenton, M. R. & R. G. Rada, 1986. Effects of disturbance on epiphytic community architecture. J. Phycol. 22: 320–326.
Manuel-Faler, C. Y., G. W. Minshall, R. W. Dunn & D. A. Bruns, 1984. In situ nitrogen enrichment experiments in two Idaho (U.S.A.) streams. Environ. Monit. Assess. 4: 67–89.
Marks, J. C. & R. L. Lowe, 1993. Interactive effects of nutrient availability and light levels on the periphyton composition of a large oligotrophic lake. Can. J. Fish. aquat. Sci. 50: 1270–1278.
Marks, J. C., M. E. Power & M. S. Parker, 2000. Flood disturbance, algal productivity and interannual variation in food chain length. Oikos, 90: 20–27.
McShaffrey, D. & W. P. McCafferty, 1991. Ecological association of the mayfly Ephemerella neehami (Ephemeroptera: Ephemerellidae) and the green alga C. glomerata (Chlorophyta: Cladophoraceae). J. Freshwat. Ecol. 6: 383–394.
O'Connell, J., E. D. Reavie & J. P. Smol, 1997. Assessment of water quality using epiphytic diatom assemblages on Cladophora from the St. Lawrence River (Canada). Diatom Res. 12(1): 55–70.
Peabody, A. J. & B. A. Whitton, 1968. Algae of the River Wear I. Diatoms. The Naturalist 906: 89–96.
Peterson, C. G., 1987. Gut passage and insect grazer selectivity of lotic diatoms. Freshwat. Biol. 18: 455–460.
Peterson, C. G. & N. B. Grimm, 1992. Temporal variation in enrichment effects during periphyton succession in a nitrogen-limited desert stream ecosystem. J. n. am. Benthol. Soc. 11: 20–36.
Power, M. E., M. S. Parker & J. T. Wooten, 1996. Disturbance and food chain length in rivers. In Polis G. A. and K. O. Winemiller (eds) Food Webs: Integration of Patterns and Dynamics. Chapman and Hall (N.Y.): 286–297.
Rodgers, J. H., K. L. Dickson & J. Cairns, 1978. A chamber for in situ evaluations of periphyton productivity in lotic systems. Arch. Hydrobiol. 84: 389–398.
Sheath, R. G. & M. O. Morison, 1982. Epiphytes on Cladophora glomerata in the Great Lakes and St. Lawrence Seaway with particular reference to the red alga Chroodactylon ramosum (Asterocytis smargdina). J. Phycol. 18: 385–391.
Sheath, R. G. & K. M. Cole, 1992. Biogeography of stream macroalgae in North America. J. Phycol. 28: 448–460.
Stevenson, R. J. & E. F. Stoermer, 1982a. Seasonal abundance patterns of diatoms on Cladophora in Lake Huron. J. Great Lakes Res. 8: 169–183.
Stevenson, R. J. & E. F. Stoermer, 1982b. Abundance patterns of diatoms on Cladophora in Lake Huron with respect to a point source of wastewater treatment plant effluent. J. Great Lakes Res. 8: 184–195.
Usher, H. D. & D. W. Blinn, 1990. Influence of various exposure periods on the biomass and chlorophyll a of C. glomerata (Chlorophyta). J. Phycol. 26: 244–249.
Whitton, B. A., 1970. Biology of Cladophora in Freshwaters. Wat. Res. 4: 457–476.
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Marks, J.C., Power, M.E. Nutrient induced changes in the species composition of epiphytes on Cladophora glomerata Kütz. (Chlorophyta). Hydrobiologia 450, 187–196 (2001). https://doi.org/10.1023/A:1017596927664
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DOI: https://doi.org/10.1023/A:1017596927664