Abstract
The physical structure of two riffles in a lowland Danish stream was studied and its importance for the composition and density of the macroinvertebrate communities was evaluated. The two riffles were visually assessed to be very similar, but measurements revealed that they differed in overall hydraulic conditions, stability, substratum composition and consolidation. Differences affected abundance of both burrowing and surface dwelling macroinvertebrates. The unstable unconsolidated riffle had higher total macroinvertebrate abundance (4137 m−2 vs. 1698 m−2), diptera abundance (2329 m−2 vs. 386 m−2) and total estimated species richness (31.7 vs. 28.8) as well as lower evenness (0.77 vs. 0.83) than the compact riffle. Among samples within the unconsolidated riffle, variations in macroinvertebrate communities were related to differences in mean substratum particle size. Here a linear log–log relationship existed between macroinvertebrate abundance, the abundance of EPT taxa and the median particle size (r 2 total = 0.46, p = 0.002; r 2 EPT = 0.73, p < 0.001). No similar relationships were evident on the consolidated riffle. Moreover, macroinvertebrate communities on the unconsolidated riffle were dominated by species with a high colonising potential. Despite being assessed to the same morphological unit, physical variation between riffles was surprisingly high as the riffles differed substantially with respect to consolidation, substratum heterogeneity and overall hydraulic structure. Macroinvertebrate community structure and composition also differed between riffles despite being drawn from the same species pool. The findings address the question if we use the correct methods and parameters when assessing the macroinvertebrate communities at the scale of the morphological unit.
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References
Acornley R.M. and Sear D.A. (1999). Sediment transport and siltation of brown trout (salmo trutta L.) spawning gravels in chalk streams. Hydrol. Process. 13: 447–458
Barmuta L.A. (1989). Habitat patchiness and macrobenthic community structure in an upland stream in temperate VictoriaAustralia. Freshwater Biol. 21: 223–236
Brookes A. (1988). Channelized Rivers ΓÇô Perspectives for Environmental Management. John Wiley and Sons, Chichester
Brunke M., Hoffmann A. and Pusch M. (2001). Use of mesohabitat-specific relationships between flow velocity and river discharge to assess invertebrate minimum flow requirements. Regul. River. 17: 667–676
Brussock P.P. and Brown A.V. (1991). Riffle-pool geomorphology disrupts longitudinal patterns of stream benthos. Hydrobiologia 220: 109–117
Church M. (1996). Channel morphology and typology. In: Petts, G.E. and Calow, P. (eds) River Flows and Channel Forms, pp 185–202. Blackwell Scientific Publications, Oxford
Conover W.J. (1980). Practical Nonparametric Statistics. John Wiley and Sons, New York
Cressie N.A.C. (1991). Statistics for Spatial Data. John Wiley and Sons, New York
Cummins K.W. (1964). An evaluation of some techniques for the collection and analysis of benthic samples with special emphasis on lotic waters. Am. Midl. Nat. 67: 477–504
Cummins K.W., Minshall G.W., Sedell J.R., Cushing C.E. and Petersen R.C. (1984). Stream ecosystem theory. Verh. Internat. Verein. Limnol. 22: 1818–1827
Death R.G. and Winterbourn M.J. (1994). Environmental stability and community persistence ΓÇô a multivariate perspective. J. N. Am. Benthol. Soc. 13: 125–139
Dietrich W.F., Kirchner J.W., Ikeda H. and Iseya F. (1989). Sediment supply and the development of coarse surface-layer in gravel-bedded rivers. Nature 340: 215–217
Downes B.J., Lake P.S., Glaister A. and Webb J.A. (1998). Scales and frequencies of disturbances: rock sizebed packing and variation among upland streams. Freshwater Biol. 40: 625–639
Downes B.J., Lake P.S. and Schreiber E.S.G. (1993). Spatial variation in the distribution of stream invertebrates ΓÇô implications of patchiness for models of community organization. Freshwater Biol. 30: 119–132
Downes B.J., Lake P.S. and Schreiber E.S.G. (1995). Habitat structure and invertebrate assemblages on stream stones: a multivariate view from the riffle. Aust. J. Ecol. 20: 502–514
Erman D.C. and Erman N.A. (1984). The response of stream macroinvertebrates to substrate size and heterogeneity. Hydrobiologia 108: 75–82
Ferguson R.I., Bloomer D.J., Hoey T.B. and Werritty A. (2002). Mobility of river tracer pebbles over different timescales. Water Resour. Res. 38: art. no. –1045.
Frissell C.A., Liss W.J., Warren C.E. and Hurley M.D. (1986). A hierarchical framework for stream habitat classification ΓÇô viewing streams in a watershed context. Environ. Manage. 10: 199–214
Giller P.S. and Malmqvist B. (1998). The Biology of Streams and Rivers. Oxford University Press, Oxford
Golden Software. (1999). Surfer 7.0 User's Guide. Golden Software Inc, Golden, Colorado, USA
Grant G.E., Swanson F.J. and Wolman M.G. (1990). Pattern and origin of stepped-bed morphology in high-gradient streams, Western Cascades, Oregon. Geol. Soc. Am. Bull. 102: 340–352
Harman W.N. (1972). Benthic substrates ΓÇô their effect on freshwater mollusca. Ecology 53: 271–276
Hildrew A.G. and Giller P.S. (1994). Patchiness, species interactions and disturbance in the stream benthos. In: Giller, P.S., Hildrew, A.G. and Raffaelli, D.G. (eds) Aquatic Ecology ΓÇô ScalePattern and Process. The 34th Symposium of the British Ecological Society University College, Cork., pp 21–62. Blackwell Scientific Publications, Oxford
Hynes H.B.N. (1970). The Ecology of Running Waters. University of Toronto Press, Toronto
Kemp J.L., Harper D.M. and Crosa G.A. (2000). The habitat-scale ecohydraulics of rivers. Ecol. Eng. 16: 17–29
Knighton D. (1998). Fluvial Forms and Processes: A New Perspective. Edward Arnold, London
Kondolf G.M. (2000). Assessing salmonid spawning gravel quality. T. Am. Fish. Soc. 129: 262–281
Lamberti G.A. and Resh V.H. (1979). Substrate relationships, spatial-distribution patterns and sampling variability in a stream caddisfly population. Environ. Entomol. 8: 561–567
Lancaster J. and Hildrew A.G. (1993). Flow refugia and the microdistribution of lotic macroinvertebrates. J. N. Am. Benthol. Soc. 12: 385–393
Mangelsdorf J., Scheurmann K. and Weiss F.H. (1990). River Morphology. A guide for Geoscientists and Engineers. Springer-Verlag, Berlin
Matthaei C.D., Peacock K.A. and Townsend C.R. (1999). Patchy surface stone movement during disturbance in a New Zealand stream and its potential significance for the fauna. Limnol. Oceanogr. 44: 1091–1102
Matthaei C.D. and Townsend C.R. (2000). Long-term effects of local disturbance history on mobile stream invertebrates. Oecologia 125: 119–126
McCune B. and Mefford M.J. (1999). PCORD User's Guideversion 4. Multivariate Analysis of Ecological Data. MjM software Design, Gleneden Beach, Oregon, USA
Merritt R.W. and Cummins K.W. (1996). An Introduction to the Aquatic Insects of North America. Kendall/Hunt Publishing Company, DubuqueIowa
Minshall G.W. (1984). Aquatic insect-substratum relationships. In: Resh, V.H. and Rosenberg, D.M. (eds) The Ecology of Aquatic Insects, pp 358–400. Praeger Scientific, New York
Miyake Y. and Nakano S. (2002). Effects of substratum stability on diversity of stream invertebrates during baseflow at two spatial scales. Freshwater Biol. 47: 219–230
Montogomery D.M. (1999). Process domains and the river continuum. J. Am. Water Resour. As. 36: 397–410
Olsen D.A., Townsend C.R. and Matthaei C.D. (2001). Influence of reach geomorphology on hyporheic communities in a gravel-bed stream. New Zeal. J. Mar. Fresh. 35: 181–190
Palmer M.W. (1990). The estimation of species richness by extrapolation. Ecology 71: 1195–1198
Pennak R.W. (1947). Bottom fauna production and physical nature of the substrate in a northern Colorado trout stream. Ecology 28: 42–48
Poff N.L. and Ward J.V. (1989). Implications of streamflow variability and predictability for lotic community structure ΓÇô a regional analysis of streamflow patterns. Can. J. Fish Aquat. Sci. 46: 1805–1818
Primer E-Ltd. (2001). Primer Foor Windows 5. Primer E-Ltd, Plymouth, England
Ruse L.P. (1994). Chironomid microdistribution in gravel of an English chalk river. Freshwater Biol 32: 533–551
SAS Institute. (2000). The SAS System Version 8.2. SAS Institute, Cary, USA
Scarsbrook M.R. and Townsend C.R. (1993). Stream community structure in relation to spatial and temporal variation ΓÇô a habitat templet study of 2 contrasting New Zealand streams. Freshwater Biol. 29: 395–410
Sear D.A. (1993). Fine sediment infiltration into gravel spawning beds within a regulated river experiencing floods: ecological implications for salmonoids. Regul. River 8: 373–390
Sear D.A. (1995). Morphological and sedimentological changes in a gravel-bed river following 12 years of flow regulation for hydropower. Regul River 10: 247–264
Smith E.P. and Vanbelle G. (1984). Nonparametric estimation of species richness. Biometrics 40: 119–129
Snedecor G.W. and Cochran W.G. (1989). Statistical Methods. Iowa State College Press, Ames, Iowa
Stanford J.A. and Ward J.V. (1983). Insect species diversity as a function of environmental variability and disturbance in stream systems. In: Barnes, J.R. and Minshall, G.W. (eds) Stream Ecology: Application and Testing of General Ecological Theory, pp 265–278. Plenum Press, New York
Thompson A. (1986). Secondary flows and the pool-riffle unit: a case study of the processes of meander development. Earth Surf. Proc. Land. 11: 631–641
Tolkamp H.H. (1980). Organism-Substrate Relationships in Lowland Streams. Agricultural Research Report 907. Agricultural University, Wageningen, The Netherlands
Vinson M.R. and Hawkins C.P. (1998). Biodiversity of stream insects: variation at local, basin and regional scales. Ann. Rev. Entomol. 43: 271–293
Ward J.V. (1975). Bottom fauna-substrate relationships in a northern Colorado trout stream ΓÇô 1945 and 1974. Ecology 56: 1429–1434
Ward J.V. (1989). The 4-dimensional nature of lotic ecosystems. J. N. Am. Benthol. Soc. 8: 2–8
Washington H.G. (1984). Diversity, biotic and similarity indexes ΓÇô a review with special Relevance to aquatic ecosystems. Water Res. 18: 653–694
Wentworth C.K. (1922). A scale of grade and class terms for clastic sediments. J. Geol. 30: 377–392
Wood P.J., Armitage P.D., Cannan C.E. and Petts G.E. (1999). Instream mesohabitat biodiversity in three groundwater streams under base-flow conditions. Aquat. Conserv. 9: 265–278
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Pedersen, M.L., Friberg, N. Two lowland stream riffles – linkages between physical habitats and macroinvertebrates across multiple spatial scales. Aquat Ecol 41, 475–490 (2007). https://doi.org/10.1007/s10452-004-1584-x
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DOI: https://doi.org/10.1007/s10452-004-1584-x