Experimental increases and reductions of light to streams: effects on periphyton and macroinvertebrate assemblages in a coniferous forest landscape
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Increased light reaching streams as a result of riparian vegetation management is often thought to be responsible for enhanced algal productivity. However, concomitant changes in nutrients and other physical processes confound that interpretation. We manipulated light in two separate experiments to test the role of light as a controlling factor for periphyton productivity and biomass, and to observe invertebrate responses in small streams in central British Columbia, Canada. We did this by adding artificial light to reaches of three forested streams, and in a second experiment we used shadecloth to cover reaches of two streams flowing through clearcuts. Periphyton growth, productivity and composition, and macroinvertebrate benthic densities were contrasted with control reaches within the same streams. Gross primary production (GPP) was increased at least 31% by light addition to forested streams. Periphyton biomass was higher under light additions, but only significantly so in one of the streams. In one stream grazers increased along with the periphyton response, whilst in the other two lit streams invertebrates, including grazers, decreased with increased light. The shading significantly reduced GPP to about 11% of that in clearcut sections, but failed to produce any significant responses in either periphyton standing stock or invertebrates in the clearcut streams. Measures of algal production and biomass responded as predicted; however, invertebrate responses to increased and decreased light were idiosyncratic amongst streams, perhaps indicating lagged responses and limitation by other resources.
- Danehy, R. J., S. S. Chan, G. T. Lester, R. B. Langshaw & T. R. Turner, 2007. Periphyton and macroinvertebrate assemblage structure in headwaters bordered by mature, thinned, and clearcut Douglas-fir stands. Forest Science 53: 294–307.
- Dudgeon, D. & I. K. K. Chan, 1992. An experimental study of the influence of periphytic algae on invertebrate abundance in a Hong Kong stream. Freshwater Biology 27: 53–63. CrossRef
- Fuchs, S. A., S. G. Hinch & E. Mellina, 2003. Effects of streamside logging on stream macroinvertebrate communities and habitat in the sub-boreal forests of British Columbia, Canada. Canadian Journal of Forest Research 33: 1408–1415. CrossRef
- Fuller, R. L., B. P. Kennedy & C. Nielson, 2004. Macroinvertebrate responses to algal and bacterial manipulations in streams. Hydrobiologia 523: 113–126. CrossRef
- Fuller, R. L., C. LaFave, M. Anastasi, J. Molina, H. Salcedo & S. Ward, 2008. The role of canopy cover on the recovery of periphyton and macroinvertebrate communities after a month-long flood. Hydrobiologia 598: 47–57. CrossRef
- Gjerløv, C. & J. S. Richardson, 2004. Patchy resources in a heterogeneous environment: effects of leaf litter and forest cover on colonisation patterns of invertebrates in a British Columbian stream. Archiv fur Hydrobiologie 161: 307–327. CrossRef
- Gravelle, J. A., T. E. Link, J. R. Broglio & J. H. Braatne, 2009. Effects of timber harvest on aquatic macroinvertebrate community composition in a northern Idaho watershed. Forest Science 55: 353–366.
- Gregory, S. V., 1980. Effects of light, nutrients, and grazing on periphyton communities in streams. Ph.D. Dissertation, Oregon State University, Corvallis, OR: 154 pp.
- Hetrick, N. J., M. A. Brusven, T. C. Bjornn, R. M. Keith & W. R. Meehan, 1998. Effects of canopy removal on invertebrates and diet of juvenile coho salmon in a small stream in Southeast Alaska. Transactions of the American Fisheries Society 127: 876–888. CrossRef
- Hill, W. R. & A. W. Knight, 1988. Nutrient and light limitation of algae in two northern California stream. Journal of Phycology 24: 125–132.
- Hill, W. R., M. G. Ryon & E. M. Schilling, 1995. Light limitation in a stream ecosystem: responses by primary producers and consumers. Ecology 76: 1297–1309. CrossRef
- Hill, W. R., P. J. Mulholland & E. R. Marzolf, 2001. Stream ecosystem responses to forest leaf emergence in spring. Ecology 82: 2306–2319. CrossRef
- Hill, W. R., S. E. Fanta & B. J. Roberts, 2008. 13C dynamics in benthic algae: effects of light, phosphorus, and biomass development. Limnology and Oceanography 53: 1217–1226.
- Hillebrand, H., 2005. Light regime and consumer control of autotrophic biomass. Journal of Ecology 93: 758–769. CrossRef
- Kiffney, P. M., J. S. Richardson & J. P. Bull, 2003. Responses of periphyton and insects to experimental manipulation of riparian buffer width along forest streams. Journal of Applied Ecology 40: 1060–1076. CrossRef
- Kiffney, P. M., J. S. Richardson & J. P. Bull, 2004. Establishing light as a causal mechanism structuring stream communities in response to experimental manipulation of riparian buffer width. Journal of the North American Benthological Society 23: 542–556. CrossRef
- Mallory, M. A. & J. S. Richardson, 2005. Complex interactions of light, nutrients and consumer density in a stream periphyton – grazer (tailed frog tadpoles) system. Journal of Animal Ecology 74: 1020–1028. CrossRef
- Marzolf, E. R., P. J. Mulholland & A. D. Steinman, 1994. Improvements to the diurnal upstream-downstream dissolved oxygen change technique for determining whole-stream metabolism in small streams. Canadian Journal of Fisheries and Aquatic Sciences 51: 1591–1599. CrossRef
- Melody, K. J. & J. S. Richardson, 2004. Responses of invertebrates and algae of a coniferous forest stream to experimental manipulation of leaf litter inputs and shading. Hydrobiologia 519: 197–206. CrossRef
- Melody, K. J. & J. S. Richardson, 2007. Riparian forest harvesting and its influence on benthic communities of small streams of sub-boreal British Columbia. Canadian Journal of Forest Research 37: 907–918. CrossRef
- Merritt, R. W. & K. W. Cummins (eds), 1996. An introduction to the aquatic insects of North America, 3rd ed. Kendall/Hunt Publishing Co, Dubuque, Iowa.
- Mulholland, P. S., S. A. Thomas, H. M. Valett, J. R. Webster & J. Beaulieu, 2006. Effects of light on NO3 − uptake in small forested streams: diurnal and day-to-day variations. Journal of the North American Benthological Society 25: 583–595. CrossRef
- Richardson, J. S., 2008. Aquatic arthropods and forestry: effects of large-scale land use on aquatic systems in Nearctic temperate regions. Canadian Entomologist 140: 495–509. CrossRef
- Rier, S. T., R. J. Stevenson & G. D. LaLiberte, 2006. Photo-acclimation response of benthic stream algae across experimentally manipulated light gradients: a comparison of growth rates and net primary productivity. Journal of Phycology 42: 560–567. CrossRef
- Rosemond, A. D., P. J. Mulholland & S. H. Brawley, 2000. Seasonally shifting limitation of stream periphyton: response of algal populations and assemblage biomass and productivity to variation in light, nutrients, and herbivores. Canadian Journal of Fisheries and Aquatic Sciences 57: 66–75. CrossRef
- Sanderson, B. L., H. J. Coe, C. D. Tran, K. H. Macneale, D. L. Harstad & A. B. Goodwin, 2009. Nutrient limitation of periphyton in Idaho streams: results from nutrient diffusing substrate experiments. Journal of the North American Benthological Society 28: 832–845. CrossRef
- Steinman, A. D., 1992. Does an increase in irradiance influence periphyton in a heavily-grazed woodland stream? Oecologia 91: 163–170. CrossRef
- Stevenson, R. J., M. L. Bothwell & R. L. Lowe, 1996. Algal ecology: Freshwater Benthic Ecosystems. Academic Press, San Diego, CA: 753.
- Yang, G. Y., T. Tang & D. Dudgeon, 2009. Spatial and seasonal variations in benthic algal assemblages in streams in monsoonal Hong Kong. Hydrobiologia 632: 189–200. CrossRef
- Experimental increases and reductions of light to streams: effects on periphyton and macroinvertebrate assemblages in a coniferous forest landscape
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