Abstract
The Wood River watershed, a small well-defined drainage basin in Rhode Island was monitored seasonally for all macrophytic vegetation and various physical variables. Twenty-four segments, 20 m in length were sampled. Mean stream depth, width and current velocity increased by 3 to 8 fold from 1st- to 4th-order segments. Light penetration was positively correlated with the above variables (p < 0.05) and increased by 11 fold from the headwaters to the mouth during September when the riparian canopy was maximum. 74 subgeneric taxa of macrophytes were collected in the Wood River basin, 36% algae, 13% bryophytes, 4% vascular cryptograms and 45% angiosperms. The highest diversity occurred in the 4th-order segments throughout the year. Species numbers were positively correlated with depth, width and light penetration (p < 0.05). Vascular plants dominated all orders, but their proportion doubled from 1st- to 4th-order streams. Macrophyte cover was twice as high in the 4th-order segments in June and September as in the other orders. Macrophyte abundance was positively correlated to light penetration and negatively correlated to the ratio of nonvascular: vascular plants (p < 0.05). Two distinct clusters were found for the predominant species. The first cluster contained mostly large angiosperms, which were rooted in sediments, while the second cluster was composed of small epilithic algae and bryophytes. The moss, Fontinalis antipyretica, was the most frequent species, occurring in 51% of the samples and in all 4 orders throughout the year.
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References
Bott, T. L., 1983. Primary productivity in streams. In: J. R. Barnes & G. W. Minshall (eds.), Stream Ecology. Application and Testing of General Ecological Theory. Plenum Press, N.Y.: 29–43.
Burkholder, J. M. & R. G. Sheath, 1985. Characteristics of softwater streams in Rhode Island, I. A comparative analysis of physical and chemical variables. Hydrobiologia 128: 97–108.
Butcher, R. W., 1933. Studies of the ecology of rivers, I. On the distribution of macrophytic vegetation in the rivers of Britain. J. Ecol. 21: 58–91.
Conrad, H. S. & R. L. Redfearn, Jr., 1979. How to Know the Mosses and Liverworts. 2nd ed. Wm. C. Brown, Dubuque, 302 pp.
Crum, H. A. & L. E. Anderson, 1981. Mosses of Eastern North America, Vol. 2. Columbia University Press, N.Y., 1328 pp.
Dawson, F. H. & U. Kern-Hansen, 1979. The effect of natural and artificial shade on the macrophytes of lowland streams and the use of shade as a management technique. Int. Revue ges. Hydrobiol. 64: 437–455.
Dixon, W. J. (ed.), 1985. BMDP Statistical Software. University of California Press, Berkeley, 734 pp.
Edwards, R. W. & M. Brooker, 1984. Wye. In: B. A. Whitton (ed.), Ecology of European Rivers. Blackwell, Oxford: 51–82.
Edwards, R. W., P. F. Williams & R. Williams, 1984. Ebbw. In: B. A. Whitton (ed.), Ecology of European Rivers. Blackwell, Oxford: 83–111.
Fassett, N. C., 1957. A Manual of Aquatic Plants. University of Wisconsin Press, Madison, 405 pp.
Glime, J. M., 1970. Zonation of bryophytes in the headwaters of a New Hampshire. Rhodora 72: 276–279.
Haslam, S. M., 1978. River Plants: the Macrophytic Vegetation of Water Courses. Cambridge University Press, Cambridge, 396 pp.
Holmes, N. T. H. & B. A. Whitton, 1975a. Macrophytes of the River Tweed. Trans. Proc. Bot. Soc. Edinb. 42: 369–381
Holmes, N. T. H. & B. A. Whitton, 1975b. Submerged bryophytes and angiosperms of the River Tweed and its tributaries. Trans. Proc. Bot. Soc. Edinb. 42: 383–395.
Holmes, N. T. H. & B. A.Whitton, 1977a. The macrophytic vegetation of the River Tees in 1975; observed and predicted changes. Freshwat. Biol. 7: 43–60.
Holmes, N. T. H. & B. A. Whitton, 1977b. Macrophytes of the River Wear, 1966–76. Naturalist, Hull 106: 53–73.
Holmes, N. T. H. & B. A.Whitton, 1977c. Macrophytic vegetation of the River Swale, Yorkshire. Freshwat. Biol. 7: 545–558.
Johansson, C., 1982. Attached algal vegetation in running waters in Jämtland, Sweden. Acta Phytogeogr. Suc. 71: 1–84.
John, D. M. & J. A. Moore, 1985. Observations on the phytobenthos of the freshwater Thames. I. The environment, floristic composition and distribution of the macrophytes (Principally macroalgae). Arch. Hydrobiol. 102: 435–459.
Meyer, J. L., 1979. The role of sediments and bryophytes in phosphorus dynamics in a headwater stream ecosystem. Limnol. Oceanogr. 24: 365–375.
Naiman, R. J., 1983. The annual pattern and spatial distribution of aquatic oxygen metabolism in boreal forest watersheds. Ecol. Monogr. 53: 73–94.
Peñuelas, J., 1985. % MathType!MTEF!2!1!+-% feaafiart1ev1aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn% hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr% 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqaqFfpeea0xe9Lq-Jc9% vqaqpepm0xbba9pwe9Q8fs0-yqaqpepae9pg0FirpepeKkFr0xfr-x% fr-xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaGaciisaiaaco% eacaGGpbWcdaWgaaadbaGaaG4maaqabaGcdaahaaWcbeqaaiabgkHi% Taaaaaa!3A1E!\[\operatorname{HCO} _3 ^ -\] as an exogenous carbon source for aquatic bryophytes Fontinalis antipyretica and Fissidens grandifrons. J. exp. Bot. 36: 441–448
Quinn, A. W., 1976. Rhode Island Geology for the NonGeologist. R.I. Dep. Nat. Resour., Providence, 63 pp.
Raven, J., J. Beardall & H. Griffiths, 1982. Inorganic C-sources for Lemanea, Cladophora and Ranunculus in a fast-flowing stream: Measurements of gas exchange and of carbon isotope ratio and their ecological implications. Oecologia (Berl.) 53: 68–78.
Ryan, T. A., B. L. Joiner & B. F. Ryan, 1976. Minitab Student Handbook, PWS Publishers, Boston, 341 pp.
Sand-Jensen, K., 1983. Photosynthetic carbon sources of stream macrophytes. J. Exp. Bot. 34: 198–210.
Sheath, R. G. & J. M. Burkholder, 1985. Characteristics of softwater streams in Rhode Island, II. Composition and seasonal dynamics of macroalgal communities. Hydrobiologia 128: 109–118
Sheath, R. G., M. O. Morison, J. E. Korch, D. Kaczmarcyzk and K. M. Cole, 1986. The distribution of stream macroalgae in southcentral Alaska. Hydrobiologia 135: 259–269.
Sirjola, E. 1969. Aquatic vegetation of the river Teuronjoki, south Finland, and its relation to water velocity. Ann. Bot. Fenn. 6: 68–75.
Skulberg, O. M. & A. Lillehammer, 1984. Glåma. In: B. A. Whitton (ed.), Ecology of European Rivers, Blackwell, Oxford: 469–498.
Sokal, R. R. & F. J. Rohlf, 1981. Biometry. 2nd edition, W. H. Freeman, N.Y., 859 pp.
Strahler, A. N., 1964. Quantitative analysis of watershed geomorphology. Trans. Am. Geophys. Union 38: 913–920.
United States Geological Survey, 1977. Water Resources Investigations in Rhode Island, 1977. U.S.G.S., Providence. 7 pp.
Vannote, R. L., G. W. Minshall, K. W. Cummins, J. R. Sedell & C. E. Cushing, 1980. The river continuum concept. Can. J. Fish. aquat. Sci. 37: 130–137
Westlake, D. F., 1975. Macrophytes. In: B. A. Whitton (ed.), River Ecology. Studies in Ecology, 2, University of California Press, Berkeley: 106–128.
Wetzel, R. G., 1975. Primary production. In: B. A. Whitton (ed.), River Ecology. Studies in Ecology, 2. University of California Press, Berkeley: 230–247.
Whitton, B. A. & D. T. Crisp, 1984. Tees. In: B. A. Whitton (ed.), Ecology of European Rivers. Blackwell, Oxford: 145–178
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Sheath, R.G., Burkholder, J.M., Hambrook, J.A. et al. Characteristics of softwater streams in Rhode Island. III. Distribution of macrophytic vegetation in a small drainage basin. Hydrobiologia 140, 183–191 (1986). https://doi.org/10.1007/BF00007573
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DOI: https://doi.org/10.1007/BF00007573