Abstract
Most large rivers in Sweden are regulated to produce hydropower. This transformation from free-flowing rivers to chains of elongate run-of-river impoundments has been shown to have consequences for aquatic, riparian and adjacent upland environments, and for the emergence patterns of aquatic insects that are important for terrestrial consumers. In this study, we investigated bird assemblages in upland-forest environments along seven large rivers (three heavily impounded and four free flowing) in northern Sweden. Bird densities were assessed by point counts in the breeding and post-breeding seasons. While we observed no significant differences in bird species richness between regulated and free-flowing rivers, cumulative densities of two feeding groups of birds (those feeding on seeds and/or large insects and those feeding on small insects) were higher along free-flowing rivers than along regulated rivers in the breeding season, consistent with known differences in aquatic-insect emergence. Further, ordination analyses showed seasonal shifts in bird assemblage structure, and that these shifts differed between regulated and free-flowing rivers and between the two feeding groups. However, the variables explaining the most variance (11–28 %) in bird assemblage structure were related to a gradient of agricultural-to-forest land use. River regulation contributed to the model in the post-breeding season, but was of relatively low importance. Nevertheless, the observed contrasting seasonal shifts in upland-forest bird assemblage structure between regulated and free-flowing rivers suggest that regulation-induced modifications of aquatic-insect emergence and subsequent changes in prey availability to the birds are also important considerations.
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References
Adler PH, Malmqvist B, Zhang YX (1999) Black flies (Diptera: Simuliidae) of northern Sweden: taxonomy, chromosomes, and bionomics. Entomol Scand 29:361–382
Allen AP, O’Connor RJ (2000) Interactive effects of land use and other factors on regional bird distributions. J Biogeogr 27:889–900
Amrine JW (1982) The New River connection to the black fly problem in southern West Virginia. W Va Agric Exp Stn Bull 678:1–30
Ballinger A, Lake PS (2006) Energy and nutrient fluxes from rivers and streams into terrestrial food webs. Mar Freshw Res 57:15–28
Baxter CV, Fausch KD, Saunders WC (2005) Tangled webs: reciprocal flows of invertebrate prey link streams and riparian zones. Freshw Biol 50:201–220
Begon M, Harper JL, Townsend CR (1996) Ecology. Individuals, populations and communities, 3rd edn. Blackwell, Oxford
Beirinckx K, Van Gossum H, Lajeunesse MJ, Forbes MR (2006) Sex biases in dispersal and philopatry: insights from a meta-analysis based on capture mark recapture studies of damselflies. Oikos 113:539–547
Bennett GF, Earle RA, Peirces MA (1991a) Avian Leucocytozoidae—the leucocytozoids of the Phasianidae sensu lato. J Nat Hist 25:1407–1428
Bennett GF, Stotts VD, Bateman MC (1991b) Blood parasites of black ducks and other anatids from Labrador and insular Newfoundland. Can J Zool 69:1405–1407
Bennett GF, Peirce MA, Ashford RW (1993) Avian Hematozoa—mortality and pathogenicity. J Nat Hist 27:993–1001
Briers RA, Cariss HM, Geoghegan R, Gee JHR (2005) The lateral extent of the subsidy from an upland stream to riparian lycosid spiders. Ecography 28:165–170
Buckland ST (2006) Point-transect surveys for songbirds: robust methodologies. Auk 123:345–357
Buckland ST, Anderson DR, Burnham KP, Laake JL, Borchers DL, Thomas L (2001) Introduction to distance sampling: estimating abundance of biological populations. Oxford University Press, Oxford
Clarke KR, Gorley RN (2001) PRIMER v5: user manual/tutorial. PRIMER-E, Plymouth
Clarke KR, Warwick RM (2001) Change in marine communities: an approach to statistical analysis and interpretation, 2nd edn. PRIMER-E, Plymouth
Collier KJ, Bury S, Gibbs M (2002) A stable isotope study of linkages between stream and terrestrial food webs through spider predation. Freshw Biol 47:1651–1659
Colwell RK (1997) EstimateS: statistical estimation of species richness and shared species from samples. Version 5. User’s guide and application. http://viceroy.eeb.uconn.edu/estimates
Crosskey RW (1990) The natural history of blackflies. British Museum (Natural History). Wiley, Chichester
Davies L, Roberts DM (1980) Flight activity of female black-flies (Diptera: Simuliidae) studied with a vehicle-mounted net in northern England. J Nat Hist 14:1–16
Dynesius M, Nilsson C (1994) Fragmentation and flow regulation of river systems in the northern thirds of the world. Science 266:753–762
Englund G, Malmqvist B (1996) Effects of flow regulation, habitat area and isolation on the macroinvertebrate fauna of rapids in north Swedish rivers. Regul Rivers Res Manag 12:433–445
Epanchin PN, Knapp RA, Lawler SP (2010) Nonnative trout impact an alpine-nesting bird by altering aquatic-insect subsidies. Ecology 91:2406–2415
Falck MJ, Wilson KR, Andersen DC (2003) Small mammals within riparian habitats of a regulated and unregulated arid land river. West N Am Nat 63:35–42
Figuerola J, Muñoz E, Gutiérrez R, Ferrer D (1999) Blood parasites, leucocytes and plumage brightness in the cirl bunting, Emberiza cirlus. Funct Ecol 13:594–601
Gehrke PC, Gilligan DM, Barwick M (2002) Changes in fish communities of the Shoalhaven River 20 years after construction of Tallowa Dam, Australia. River Res Appl 18:265–286
Gotelli NJ, Colwell RK (2001) Quantifying biodiversity: procedures and pitfalls in the measurement and comparison of species richness. Ecol Lett 4:379–391
Hatchwell BJ, Wood MJ, Anwar MA, Chamberlain DE, Perrins CM (2001) The haematozoan parasites of common blackbirds Turdus merula: associations with host condition. Ibis 143:420–426
Henschel JR, Mahsberg D, Stumpf H (2001) Allochthonous aquatic insects increase predation and decrease herbivory in river shore food webs. Oikos 93:429–438
Hunter DB, Rohner C, Currie DC (1997) Mortality in fledgling great horned owls from black fly hematophaga and leucocytozoonosis. J Wildl Dis 33:486–491
Huntley B, Baxter R, Lewthwaite KJ, Willis SG, Adamson JK (1998) Vegetation responses to local climatic changes induced by a water-storage reservoir. Glob Ecol Biogeogr 7:241–257
Iwata T (2003) The roles of fluvial geomorphology in the trophic flow from stream to forest ecosystems. Doctoral dissertation, Kyoto University, Kyoto, Japan
Iwata T, Nakano S, Murakami M (2003) Stream meanders increase insectivorous bird abundance in riparian deciduous forests. Ecography 26:325–337
Iwata T, Urabe J, Mitsuhashi H (2010) Effects of drainage-basin geomorphology on insectivorous bird abundance in temperate forests. Conserv Biol 24:278–1289
Jackson JK, Resh VH (1989) Distribution and abundance of adult aquatic insects in the forest adjacent to a northern California stream. Environ Entomol 18:278–283
Jansson R, Nilsson C, Dynesius M, Andersson E (2000) Effects of river regulation on river-margin vegetation: a comparison of eight boreal rivers. Ecol Appl 10:203–224
Jetz W, Wilcove DS, Dobson AP (2007) Projected impacts of climate and land-use change on the global diversity of birds. PLoS Biol 5:e157
Jonsson M, Wardle DA (2009) The influence of freshwater-lake subsidies on invertebrates occupying terrestrial vegetation. Acta Oecol 35:698–704
Jonsson M, Englund G, Wardle DA (2011) Direct and indirect effects of area, energy, and habitat heterogeneity on breeding bird communities. J Biogeogr 38:1186–1196
Jonsson M, Deleu P, Malmqvist B (in press) Persisting effects of river regulation on emergent aquatic insects and terrestrial invertebrates in upland forests. River Res Appl. doi:10.1002/rra.2559
Kingsford RT, Jenkins KM, Porter JL (2004) Imposed hydrological stability on lakes in arid Australia and effects on waterbirds. Ecology 85:2478–2492
Kiszewski AE, Cupp EW (1986) Transmission of Leucocytozoon smithi (Sporozoa, Leucocytozoidae) by black flies (Diptera, Simuliidae) in New York, USA. J Med Entomol 23:256–262
Korpimäki E, Hakkarainen H, Bennett GF (1993) Blood parasites and reproductive success of Tengmalm owls—detrimental effects on females but not on males. Funct Ecol 7:420–426
Kruk A, Penczak T (2003) Impoundment impact on populations of facultative riverine fish. Ann Limnol Int J Limnol 39:197–210
Malmqvist B (2002) Aquatic invertebrates in riverine landscapes. Freshw Biol 47:679–694
Malmqvist B, Adler PH, Kuusela K, Merritt RW, Wotton RS (2004a) Black flies in the boreal biome, key organisms in both terrestrial and aquatic environments: a review. Ecoscience 11:187–200
Malmqvist B, Strasevicius D, Hellgren O, Adler PH, Bensch S (2004b) Vertebrate host specificity of wild-caught blackflies revealed by mitochondrial DNA in blood. Proc R Soc Lond B (Suppl) 271:152–155
Merino S, Moreno J, Sanz JJ, Arriero E (2000) Are avian blood parasites pathogenic in the wild? A medication experiment in blue tits (Parus caeruleus). Proc R Soc Lond B 267:2507–2510
Merritt DM, Cooper DJ (2000) Riparian vegetation and channel change in response to river regulation: a comparative study of regulated and unregulated streams in the Green River Basin, USA. Regul Rivers Res Manag 16:543–564
Murakami M, Nakano S (2002) Indirect effect of aquatic insect emergence on a terrestrial insect population through predation by birds. Ecol Lett 5:333–337
Naiman RJ, Décamps H (1997) The ecology of interfaces: riparian zone. Annu Rev Ecol Syst 28:621–658
Nakano S, Murakami M (2001) Reciprocal subsidies: dynamic interdependence between terrestrial and aquatic food webs. Proc Natl Acad Sci USA 98:166–170
Nilsson C (1986) Change in riparian plant community composition along two rivers in northern Sweden. Can J Bot 64:589–592
Nilsson C, Dynesius M (1994) Ecological effects of river regulation on mammals and birds: a review. Regul Rivers Res Manag 9:45–53
Nilsson C, Jansson R (1995) Floristic differences between riparian corridors of regulated and free-flowing boreal rivers. Regul Rivers Res Manag 11:55–66
Nilsson C, Ekblad A, Gardfjell M, Carlberg B (1991) Long-term effects of river regulation on river margin vegetation. J Appl Ecol 28:963–987
Ojanen U, Ratti O, Adler PH, Kussela K, Malmqvist B, Helle P (2002) Blood feeding by black flies (Diptera: Simuliidae) on black grouse (Tetrao tetrix) in Finland. Entomol Fenn 13:153–158
Ormerod SJ, Watkinson AR (2000) Editors’ introduction: birds and agriculture. J Appl Ecol 37:699–705
Petersen I, Master Z, Hildrew AG, Ormerod SJ (2004) Dispersal of adult aquatic insects in catchment of differing land use. J Appl Ecol 41:934–950
Polis GA, Anderson WB, Holt RD (1997) Toward an integration of landscape and food web ecology: the dynamics of spatially subsidized food webs. Annu Rev Ecol Syst 28:289–316
Pollino CA, Feehan P, Grace MR, Harr BT (2004) Fish communities and habitat changes in the highly modified Goulburn catchment, Victoria, Australia. Mar Freshw Res 55:769–780
Poulin B, Lefebvre G, Paz L (2010) Red flag for green spray: adverse trophic effect of Bti on breeding birds. J Appl Ecol 47:884–889
Power ME, Rainey WE (2000) Food webs and resource sheds: towards spatially delimiting trophic interactions. In: Hutchings MJ, John EA, Stewart AJA (eds) Ecological consequences of habitat heterogeneity. Blackwell Science, Oxford, pp 291–314
Raab B, Vedin H (1995) Klimat, sjöar och vattendrag. Sveriges meteorologiska och hydrologiska institut (in Swedish). Sveriges Nationalatlas
Reitan O, Sandvik J (1996) An assessment of retaining dams in hydropower reservoirs for enhancing bird habitat. Regul Rivers Res Manag 12:523–534
Ricklefs RE, Lovette IJ (1999) The roles of island area per se and habitat diversity in the species–area relationship of four Lesser Antillean faunal groups. J Anim Ecol 68:1142–1160
Scheuerlein A, Ricklefs RE (2004) Prevalence of blood parasites in European passeriform birds. Proc R Soc Lond B 271:1363–1370
SMHI Hydrology (1999) Svensk vattenarkiv: avrinnings områden i Sverige (in Swedish)
Smith RN, Cain SL, Anderson SH, Dunk JR, Williams ES (1998) Blackfly-induced mortality of nestling red-tailed hawks. Auk 115:368–375
Snow D, Perrins CM, Gillmor R (1998) The birds of the western Palearctic. Oxford University Press, Oxford
Sullivan SMP, Rodewald AD (2012) In a state of flux: the energetic pathways that move contaminants from aquatic to terrestrial environmental. Environ Toxicol Chem 31:1175–1183
ter Braak CJF, Smilauer P (1998) CANOCO reference manual and user’s guide to Canoco for Windows: software for canonical community ordination. Version 4. Microcomputer Power. Ithaca, NY
Thomas L, Laake JL, Strindberg S, Marques FFC, Buckland ST, Borchers DL, Anderson DR, Burnham KP, Hedley SL, Pollard JH, Bishop JRB (2004) Distance 4.1. Release 2. Research unit for wildlife population assessment. University of St. Andrews
Uesugi A, Murakami M (2007) Do seasonally fluctuating aquatic subsidies influence the distribution pattern of birds between riparian and upland forests? Ecol Res 22:274–281
Valkiunas G, Iezhova TA, Shapova AP (2003) High prevalence of blood parasites in hawfinch Coccothraustes coccothraustes. J Nat Hist 37:2647–2652
Wiens JA (2002) Riverine landscapes: taking landscape ecology into the water. Freshwater Biol 47:501–515
Acknowledgements
We thank Peter Adler, Frank Johansson, Fabio Lepori, and two anonymous reviewers for valuable comments on previous versions of this manuscript and Johan Nilsson for help with data collection. The study was partly supported by the Swedish Energy Agency.
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B. Malmqvist: Deceased.
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Jonsson, M., Strasevicius, D. & Malmqvist, B. Influences of river regulation and environmental variables on upland bird assemblages in northern Sweden. Ecol Res 27, 945–954 (2012). https://doi.org/10.1007/s11284-012-0974-0
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DOI: https://doi.org/10.1007/s11284-012-0974-0