Abstract
Impoundments alter connectivity, sediment transport and water discharge in rivers and floodplains, affecting recruitment, habitat and resource availability for fish including benthic invertivorous fish, which represent an important link between primary producers and higher trophic levels in tropical aquatic ecosystems. We investigated long-term changes to water regime, water quality, and invertivorous fish assemblages pre and post impoundment in three rivers downstream of Porto Primavera Reservoir in south Brazil: Paraná, Baía and Ivinhema rivers. Impacts were distinct in the Paraná River, which is fully obstructed by the dam, less evident in the Baía River which is partially obstructed by the dam, but absent in the unimpounded Ivinhema River. Changes in water regime were reflected mainly as changes in water-level fluctuation with little effect on timing. Water transparency increased in the Paraná River post impoundment but did not change in the Baía and Ivinhema rivers. Changes in fish assemblages included a decrease in benthic invertivorous fish in the Paraná River and a shift in invertivorous fish assemblage structure in the Baía and Paraná rivers but not in the unimpounded Ivinhema River. Changes in water regime and water transparency, caused by impoundment, directly or indirectly impacted invertivorous fish assemblages. Alterations of fish assemblages following environmental changes have consequences over the entire ecosystem, including a potential decrease in the diversity of mechanisms for energy flow. We suggest that keeping existing unimpounded tributaries free of dams, engineering artificial floods, and intensive management of fish habitat within the floodplain may preserve native fish assemblages and help maintain functionality and ecosystem services in highly impounded rivers.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Abujanra F, Agostinho AA, Hahn NS (2009) Effects of the flood regime on the body condition of fish of different trophic guilds in the Upper Paraná River floodplain, Brazil. Brazil J Biol 69:469–479. https://doi.org/10.1590/S1519-69842009000300003
Acreman MC, Farquharson FAK, McCartney MP et al. (2000) Managed flood releases from reservoirs: issues and guidance. Report to DFID and the World Commisson on Dams, Centre for Ecology and Hydrology, Wallingford
Affonso IP, Azevedo RF, Santos NCL dos, Dias RM, Agostinho AA, Gomes LC (2015) Pulling the plug: replicable strategies to preclude dam expansion in Brazilian rivers of high-priority for conservation. Natureza Conservação 13:199–203
Agostinho AA, Zalewski M (1995) The dependence of fish community structure and dynamics on floodplain and riparian ecotone zone in Paraná River, Brazil. Hydrobiologia 303:141–148
Agostinho AA, Thomaz SM, Minte-Vera CV, Winemiller KO (2000) Biodiversity in the High Paraná River Floodplain. In: Gopal B, Junk WJ, Davis JA (eds) Biodiversity in wetlands: assesment, function and conservation, vol 1. Backhuys Publishers, Leiden, pp 89–118
Agostinho AA, Gomes LC, Zalewski M (2001) The importance of floodplains for the dynamics of fish communities of the upper river Paraná. Int J Ecohydrol Hydrobiol 1:209–217
Agostinho AA, Gomes LC, Thomaz SM, Hahn NS (2004a) The Upper Paraná River and its floodplain: main characteristics and perspectives for management and conservation. In: Thomaz SM, Agostinho AA, Hahn NS (eds) The Upper Parana River and its Floodplain: physical aspects, ecology and conservation. Backhuys Publishers, Leiden, pp 381–393
Agostinho AA, Gomes LC, Veríssimo S, Okada EK (2004b) Flood regime, dam regulation and fish in the Upper Paraná River: effects on assemblage attributes, reproduction and recruitment. Rev Fish Biol Fish 14:11–19. https://doi.org/10.1007/s11160-004-3551-y
Agostinho AA, Thomaz SM, Gomes LC (2004c) Threats for biodiversity in the floodplain of the Upper Paraná River: effects of hydrological regulation by dams. Ecohydrol Hydrobiol 4:255–268
Agostinho A, Pelicice F, Gomes L (2008) Dams and the fish fauna of the Neotropical region: impacts and management related to diversity and fisheries. Brazilian J Biol 68:1119–1132. https://doi.org/10.1590/S1519-69842008000500019
Agostinho AA, Bonecker CC, Gomes LC (2009) Effects of water quantity on connectivity: the case of the upper Paraná River floodplain. Ecohydrol Hydrobiol 9:99–113. https://doi.org/10.2478/v10104-009-0040-x
Agostinho AA, Gomes LC, dos Santos NCL, Ortega JCG, Pelicice FM (2016) Fish assemblages in Neotropical reservoirs: colonization patterns, impacts and management. Fish Res 173:26–36. https://doi.org/10.1016/j.fishres.2015.04.006
Anderson MJ (2001) A new method for non-parametric multivariate analysis of variance. Austral Ecolo 26:32–46
Angulo-Valencia MA, Agostinho AA, Suzuki HI, da Luz-Agostinho KDG, Agostinho CS (2016) Impoundments affect fish reproduction regardless of reproductive strategy. Lakes Reserv Res Manag 21:362–374. https://doi.org/10.1111/lre.12151
Arai FK, Pereira SB, Gonçalves GGG (2012) Characterization of water availability in a hydrographic basin. Eng Agrícola 32:591–601. https://doi.org/10.1590/S0100-69162012000300018
Bailly D, Agostinho AA, Suzuki HI (2008) Influence of the flood regime on the reproduction of fish species with different reproductive strategies in the Cuiabá River, Upper Pantanal, Brazil. River Res Appl 24:1218–1229. https://doi.org/10.1002/rra
Barbosa FAR, Padisak J, Espíndola ELG et al (1999) The Cascading reservoir continuum concept (CRCC) and its application to the River Tietê basin, São Paulo state, Brazil. In: Tundisi JG, Straskraba M (eds) Theoretical reservoir ecology and its applications. Backhyus Publishers, Leiden, pp 425–437
BCD: Brazilian Committee on Dams (2009) Main Brazilian dams III: design, construction, and performance. BCD, Botafogo, Rio de Janeiro, Brasil. http://www.cbdb.org.br/documentos/mbdiii/porto%20Primavera.pdf. Accessed 16 May 2017
Braghin LSM, Figueiredo BRS, Meurer T et al (2015) Zooplankton diversity in a dammed river basin is maintained by preserved tributaries in a tropical floodplain. Aquat Ecol 49:175–187. https://doi.org/10.1007/s10452-015-9514-7
Brandt SA (2000) Classification of geomorphological effects downstream of dams. Catena 40:375–401. https://doi.org/10.1016/S0341-8162(00)00093-X
Bredenhand E, Samways MJ (2009) Impact of a dam on benthic macroinvertebrates in a small river in a biodiversity hotspot: Cape Floristic Region, South Africa. J Insect Conserv 13:297–307. https://doi.org/10.1007/s10841-008-9173-2
Buijse AD, Coops H, Staras M et al (2002) Restoration strategies for river floodplains along large lowland rivers in Europe. Freshw Biol 47:889–907. https://doi.org/10.1046/j.1365-2427.2002.00915.x
Bunn SE, Arthington AH (2002) Basic principles and ecological consequences of altered flow regimes for aquatic biodiversity. Environ Manage 30:492–507. https://doi.org/10.1007/s00267-002-2737-0
Clarke KR, Somerfield PJ, Chapman MG (2006) On resemblance measures for ecological studies, including taxonomic dissimilarities and a zero-adjusted Bray-Curtis coefficient for denuded assemblages. J Exp Mar Bio Ecol 330:55–80. https://doi.org/10.1016/j.jembe.2005.12.017
Comunello E, Souza Filho EE, Rocha PC, Nanni MR (2003) Dinâmica de inundação de áreas sazonalmente alagáveis na planície aluvial do Alto Rio Paraná: estudo preliminar. In: Anais do 11° Simpósio brasileiro de sensoriamento remoto. São José Dos Campos, Inpe, pp 2459–2466
Depczynski M, Fulton CJ, Marnane MJ, Bellwood DR (2007) Life history patterns shape energy allocation among fishes on coral reefs. Oecologia 153:111–120. https://doi.org/10.1007/s00442-007-0714-2
Diehl S, Feissel M (2001) Intraguild prey suffer from enrichment of their resources: a microcosm experiment with ciliates. Ecology 82:2977–2983. https://doi.org/10.1890/0012-9658(2001)082
Dobson A, Lodge D, Alder J et al (2006) Habitat loss, trophic collapse, and the decline of ecosystem services. Ecology 87:1915–1924
Dodrill MJ, Yard MD, Pine WE (2016) Assessing predation risks for small fish in a large river ecosystem between contrasting habitats and turbidity conditions. Am Midl Nat J 175:206–221
Friedl G, Wüest A (2002) Disrupting biogeochemical cycles: consequences of damming. Aquat Sci 64:55–65. https://doi.org/10.1007/s00027-002-8054-0
Fugi R, Agostinho AA, Hahn NS (2001) Trophic morphology of five benthic-feeding fish species of a tropical floodplain. Braz J Biol 61:27–33. https://doi.org/10.1590/S0034-71082001000100005
Graça WJ, Pavanelli CS (2007) Peixes da planície de inundação do alto rio Paraná e áreas adjacentes. EDUEM, Maringá
Gregory KJ, Benito G, Downs PW (2008) Applying fluvial geomorphology to river channel management: background for progress towards a palaeohydrology protocol. Geomorphology 98:153–172. https://doi.org/10.1016/j.geomorph.2007.02.031
Gubiani ÉA, Gomes LC, Agostinho AA, Okada EK (2007) Persistence of fish populations in the upper Paraná River: effects of water regulation by dams. Ecol Freshw Fish 16:191–197. https://doi.org/10.1111/j.1600-0633.2007.00211.x
Hahn NS, Cunha F (2005) Feeding and trophic ecomorphology of Satanoperca pappaterra (Pisces, Cichlidae) in the Manso Reservoir, Mato Grosso State, Brazil. Brazilian Arch Biol Technol 48:1007–1012. https://doi.org/10.1590/S1516-89132005000800017
Hahn NS, Fugi R, Andrian IF (2004) Trophic ecology of the fish assemblages. In: Thomaz SM, Agostinho AA, Hahn NS (eds) The Upper Parana River and its Floodplain: physical aspects, ecology and conservation. Backhuys Publishers, Leiden, pp 247–270
Hoeinghaus DJ, Winemiller KO, Agostinho AA (2007) Landscape-scale hydrologic characteristics differentiate patterns of carbon flow in large-river food webs. Ecosystems 10:1019–1033. https://doi.org/10.1007/s10021-007-9075-2
Hoeinghaus DJ, Winemiller KO, Agostinho AA (2008) Hydrogeomorphology and river impoundment affect food-chain length of diverse Neotropical food webs. Oikos 117:984–995. https://doi.org/10.1111/j.0030-1299.2008.16459.x
Holzbach AJ, Gubiani ÉA, Baumgartner G (2009) Iheringichthys labrosus (Siluriformes: Pimelodidae) in the Piquiri River, Paraná, Brazil: population structure and some aspects of its reproductive biology. Neotrop Ichthyol 7:55–64. https://doi.org/10.1590/S1679-62252009000100008
Hostache G, Mol JH (1998) Reproductive biology of the neotropical armoured catfish Hoplosternum littorale (Siluriformes—Callichthyidae): a synthesis stressing the role of the floating bubble nest. Aquat Living Resour 11:173–185
Hudon C, Cattaneo A, Poirier AMT et al (2012) Oligotrophication from wetland epuration alters the riverine trophic network and carrying capacity for fish. Aquat Sci 74:495–511. https://doi.org/10.1007/s00027-011-0243-2
Junk WJ, Wantzen KM (2004) The flood pulse concept: new aspects, approaches and applications—an update. In: Welcomme RL, Petr T (eds) Proceedings of the Second International Symposium on the Management of Large Rivers for Fisheries. Food and Agriculture Organization and Mekong River Commission, FAO Regional Office for Asia and the Pacific, Bangkok, pp 117–149
Junk WJ, Bayley PB, Sparks RE (1989) The flood pulse concept in river-floodplain systems. In: Dodge PD (ed) Proceedings of the international large river symposium, Canadian special publication of fisheries and aquatic sciences, pp 110–127
Kramer MJ, Bellwood O, Bellwood DR (2013) The trophic importance of algal turfs for coral reef fishes: the crustacean link. Coral Reefs 32:575–583. https://doi.org/10.1007/s00338-013-1009-1
Kramer MJ, Bellwood O, Fulton CJ, Bellwood DR (2015) Refining the invertivore: diversity and specialisation in fish predation on coral reef crustaceans. Mar Biol 162:1779–1786. https://doi.org/10.1007/s00227-015-2710-0
Kummu M, Varis O (2007) Sediment-related impacts due to upstream reservoir trapping, the Lower Mekong River. Geomorphology 85:275–293. https://doi.org/10.1016/j.geomorph.2006.03.024
Langeani F, Castro RMC, Oyakawa OT et al (2007) Diversidade da ictiofauna do Alto Rio Paraná: composição atual e perspectivas futuras. Biota Neotrop 7:181–197. https://doi.org/10.1590/S1676-06032007000300020
Lima AC, Agostinho CS, Soares AMVM., Monaghan KA (2016) Alternative ways to measure impacts of dam closure to the structure of fish communities of a neotropical river. Ecohydrology 9:860–870. https://doi.org/10.1002/eco.1688
Lima-Junior SE, Goitein R (2003) Ontogenetic diet shifts of a Neotropical catfish, Pimelodus maculatus (Siluriformes, Pimelodidae): an ecomorphological approach. Environ Biol Fishes 68:73–79. https://doi.org/10.1023/A:1026079011647
Lobon-Cervia J, Bennemann S (2000) Temporal trophic shifts and feeding diversity in two sympatric, neotropical, omnivorous fishes: Astyanax bimaculatus and Pimelodus maculatus in Tibagi Rio (Parana, Southern Brazil). Arch für Hydrobiol 149:285–306. https://doi.org/10.1127/archiv-hydrobiol/149/2000/285
Lopes CA, Benedito E, Martinelli LA (2009) Trophic position of bottom-feeding fish in the Upper Paraná River floodplain. Brazi J Biol 69:573–581
Luz-Agostinho KDG, Agostinho AA, Gomes LC, Júlio HF Jr (2008) Influence of flood pulses on diet composition and trophic relationships among piscivorous fish in the upper Parana River floodplain. Hydrobiologia 607:187–198. https://doi.org/10.1007/s10750-008-9390-4
Mackereth FJH, Heron J, Talling JF (1978) Water analysis: some revised methods for limnologists, vol 36. Freshwater Biological Association, Scientific Publication, Cumbria
Makrakis MC, Miranda LE, Makrakis S et al (2012) Diversity in migratory patterns among Neotropical fishes in a highly regulated river basin. J Fish Biol 81:866–881. https://doi.org/10.1111/j.1095-8649.2012.03346.x
Manyari WV, de Carvalho OA (2007) Environmental considerations in energy planning for the Amazon region: downstream effects of dams. Energy Policy 35:6526–6534. https://doi.org/10.1016/j.enpol.2007.07.031
Marengo JA, Jones R, Alves LM, Valverde MC (2009) Future change of temperature and precipitation extremes in South America as derived from the PRECIS regional climate modeling system. Int J Climatol 29:2241–2255. https://doi.org/10.1002/joc.1863
Marengo JA, Chou SC, Kay G et al (2012) Development of regional future climate change scenarios in South America using the Eta CPTEC/HadCM3 climate change projections: climatology and regional analyses for the Amazon, São Francisco and the Paraná River basins. Clim Dyn 38:1829–1848. https://doi.org/10.1007/s00382-011-1155-5
Mérona B de, dos Santos GM, de Almeida RG (2001) Short term effects of Tucurui Dam (Amazonia, Brazil) on the trophic organization of fish communities. Environ Biol Fishes 60:375–392. https://doi.org/10.1023/A:1011033025706
Mérona B de, Vigouroux R, Tejerina-Garro FL (2005) Alteration of fish diversity downstream from Petit-Saut Dam in French Guiana: implication of ecological strategies of fish species. Hydrobiologia 551:33–47. https://doi.org/10.1007/s10750-005-4448-z
Miranda LE, Habrat MD, Miyazono S (2008) Longitudinal gradients along a reservoir cascade. Trans Am Fish Soc 137:1851–1865. https://doi.org/10.1577/T07-262.1
Mol JH (1996) Reproductive seasonality and nest-site differentiation in three closely related armoured catfishes (Siluriformes: Callichthyidae). Environ Biol Fishes 45:363–381. https://doi.org/10.1007/BF00002529
Mormul RP, Thomaz SM, Agostinho AA et al (2012) Migratory benthic fishes may induce regime shifts in a tropical floodplain pond. Freshw Biol 57:1592–1602. https://doi.org/10.1111/j.1365-2427.2012.02820.x
Ney JJ (1996) Oligotrophication and its discontents: effects of reduced nutrient loading on reservoir fisheries. Am Fish Soc Symp 16:285–295
Nilsson C, Reidy CA, Dynesius M, Revenga C (2005) Fragmentation and flow regulation of the world’s large river systems. Science 308:405–408. https://doi.org/10.1126/science.1107887
Nohara D, Kitoh A, Hosaka M, Oki T (2006) Impact of climate change on river discharge projected by multimodel ensemble. J Hydrometeorol 7:1076–1089. https://doi.org/10.1175/JHM531.1
Novakowski GC, Cassemiro FAS, Hahn NS (2016) Diet and ecomorphological relationships of four cichlid species from the Cuiabá River basin. Neotrop Ichthyol 14:e150151. https://doi.org/10.1590/1982-0224-20150151
Oliveira AG, Suzuki HI, Gomes LC, Agostinho AA (2014) Interspecific variation in migratory fish recruitment in the Upper Paraná River: effects of the duration and timing of floods. Environ Biol Fishes 98:1327–1337. https://doi.org/10.1007/s10641-014-0361-5
Ollero A (2010) Channel changes and floodplain management in the meandering middle Ebro River, Spain. Geomorphology 117:247–260. https://doi.org/10.1016/j.geomorph.2009.01.015
Ortega JCG, Júlio HF, Gomes LC, Agostinho AA (2015) Fish farming as the main driver of fish introductions in Neotropical reservoirs. Hydrobiologia 746:147–158. https://doi.org/10.1007/s10750-014-2025-z
Paragamian VL (2002) Changes in the species composition of the fish community in a reach of the Kootenai River, Idaho, after construction of Libby Dam. J Freshw Ecol 17:375–383. https://doi.org/10.1080/02705060.2002.9663911
Patten DT, Harpman DA, Voita MI, Randle TJ (2001) A managed flood on the Colorado River: background, objectives, design, and implementation. Ecol Appl 11:635–643
Poff NL, Schmidt JC (2016) How dams can go with the flow. Science 353:1099–1100
Post DM (2002) The long and short of food-chain length. Trends Ecol Evol 17:269–277. https://doi.org/10.1016/j.cell.2013.04.003
Quinn JM, Hickey CW (1990) Magnitude of effects of substrate particle size, recent flooding and catchment development on benthic invertebrates in 88 New Zealand rivers. New Zeal J of Mar Freshw Res 24:411–427. https://doi.org/10.1080/00288330.1990.9516433
Rauschenbach T (2016) Modeling, control, and optimization of water systems. Springer, New York
Richter BD, Baumgartner JV, Braun DP, Powell J (1998) A spatial assessment of hydrologic alteration within a river network. Regul Rivers Res Manag 14:329–340. https://doi.org/10.1002/(SICI)1099-1646(199807/08)14:4<329::AID-RRR505>3.0.CO;2-E
Roberto MC, Santana NN, Thomaz SM (2009) Limnology in the Upper Paraná River floodplain: large-scale spatial and temporal patterns, and the influence of reservoirs. Braz J Biol 69:717–725. https://doi.org/10.1590/S1519-69842009000300025
Rocha PC (2010) Indicadores de alteração hidrológica no Alto Rio Paraná: intervenções humanas e implicações na dinâmica do ambiente fluvial. Soc Nat 22:191–211. https://doi.org/10.1590/S1982-45132010000100014
Rocha RRA, Thomaz SM (2004) Variação temporal de fatores limnológicos em ambientes da planície de inundação do alto rio Paraná (PR/MS—Brasil). Acta Sci Biol Sci 26:261–271. https://doi.org/10.4025/actascibiolsci.v26i3.1538
Sampaio EV, Rocha O, Matsumura-Tundisi T, Tundisi JG (2002) Composition and abundance of zooplankton in the limnetic zone of seven reservoirs of the Paranapanema River, Brazil. Braz J Biol 62:525–545. https://doi.org/10.1590/S1519-69842002000300018
Sanches PV, Nakatani K, Bialetzki A et al (2006) Flow regulation by dams affecting ichthyoplankton: the case of the Porto Primavera Dam, Paraná River, Brazil. River Res Appl 22:555–565. https://doi.org/10.1002/rra.922
Santos NCLdos, de Santana HS, Dias RM et al (2016) Distribution of benthic macroinvertebrates in a tropical reservoir cascade. Hydrobiologia 765:265–275. https://doi.org/10.1007/s10750-015-2419-6
Sousa WTZ, Thomaz SM, Murphy KJ (2010) Response of native Egeria najas Planch. and invasive Hydrilla verticillata (L.f.) Royle to altered hydroecological regime in a subtropical river. Aquat Bot 92:40–48. https://doi.org/10.1016/j.aquabot.2009.10.002
Souza Filho EE (2009) Evaluation of the Upper Paraná River discharge controlled by reservoirs. Braz J Biol 69:707–716
Souza Filho EE, Rocha PC, Comunello E, Stevaux JC (2004) Effects of the Porto Primavera Dam on physical environment of the downstream floodplain. In: Thomaz SM, Agostinho AA, Hahn NS (eds) The Upper Parana River and its Floodplain: physical aspects, ecology and conservation. Backhuys Publishers, Leiden, pp 55–74
Stevaux JC, Takeda AM (2002) Geomorphological processes related to density and variety of zoobenthic community of the upper Paraná River, Brazil. Zeitschrift Fuer Geomorphol 129:143–158
Stevaux JC, Martins DP, Meurer M (2009) Changes in a large regulated tropical river: the Paraná River downstream from the Porto Primavera Dam, Brazil. Geomorphology 113:230–238. https://doi.org/10.1016/j.geomorph.2009.03.015
Stockner JG, Rydin E, Hyenstrand P (2000) Cultural oligotrophication: causes and consequences for fisheries resources. Fisheries 25:7–14. https://doi.org/10.1577/1548-8446(2000)025<0007
Takeda AM, Fujita DS (2004) Benthic invertebrates. In: Thomaz SM, Agostinho AA, Hahn NS (eds) The Upper Parana River and its Floodplain: physical aspects, ecology and conservation. Backhuys Publishers, Leiden, pp 191–208
Thomaz SM, Pagioro TA, Bini LM et al (2004) Limnological characterization of the aquatic environments and the influence of hydrometric levels. In: Thomaz SM, Agostinho AA, Hahn NS (eds) The Upper Parana River and its Floodplain: physical aspects, ecology and conservation. Backhuys Publishers, Leiden, pp 75–102
Thomaz SM, Bini LM, Bozelli RL (2007) Floods increase similarity among aquatic habitats in river-floodplain systems. Hydrobiologia 579:1–13. https://doi.org/10.1007/s10750-006-0285-y
TNC: The Nature Conservancy (2009) Indicators of Hydrologic Alteration Version 7.1 User’s Manual. https://www.conservationgateway.org/ConservationPractices/Freshwater/EnvironmentalFlows/MethodsandTools/IndicatorsofHydrologicAlteration/Documents/IHAV7.pdf. Accessed 11 May 2017
Turesson H, Brönmark C (2007) Predator-prey encounter rates in freshwater piscivores: effects of prey density and water transparency. Oecologia 153:281–290. https://doi.org/10.1007/s00442-007-0728-9
Vannote RL, Minshall GW, Cummins KW et al (1980) The river continuum concept. Can J Fish Aquat Sci 37:130–137. https://doi.org/10.1139/f80-017
Vazzoler AEA de M (1996) Biologia da reprodução de peixes teleósteos: teoria e prática. EDUEM, Maringá
Verba JT, Lampert VR, Azevedo M (2011) Reproductive traits of Gymnogeophagus labiatus (Teleostei, Cichlidae), in an upper stretch of Sinos river, Caraá, Brazil. Iheringia Ser Zool 101:200–206. https://doi.org/10.1590/S0073-47212011000200007
Ward JV, Stanford JA (1983) Serial Discontinuity Concept of lotic ecosystems. In: Fontaine D, Bartell S (eds) Dynamics of Lotic Systems. Science Publishers, Ann Arbor, pp 29–42
Ward JV, Stanford JA (1995a) Ecological connectivity in alluvial river ecosystems and its disruption by flow regulation. Regul Rivers Res Manag II:105–119
Ward JV, Stanford J (1995b) The serial discontinuity concept: extending the model to floodplain rivers. Regul Rivers Res Manag 10:159–168
Winemiller KO (1989) Patterns of variation in life history among South American fishes in seasonal environments. Oecologia 81:225–241. https://doi.org/10.1007/BF00379810
Winemiller KO, McIntyre PB, Castello L et al (2016) Balancing hydropower and biodiversity in the Amazon, Congo, and Mekong. Science 351:128–129. https://doi.org/10.1126/science.aac7082
Wohl E, Bledsoe BP, Jacobson RB et al (2015) The natural sediment regime in rivers: broadening the foundation for ecosystem management. Bioscience 65:358–371. https://doi.org/10.1093/biosci/biv002
Acknowledgements
We are grateful to the Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) for the financial support through the Long Term Ecological Research Program (PELD—site 6). We thank the Programa de Excelência Acadêmica (PROEX) and the Núcleo de Pesquisas em Limnologia, Ictiologia e Aquicultura (NUPELIA) for providing the infrastructure for research. David Schumann, Igor de Paiva Affonso and Norma Segatti Hahn provided a constructive review to the initial manuscript. We also thank João D. Latini for helping with datasets and Jaime L. L. Pereira for helping with figures. RVG is thankful to CNPq for the graduate student scholarship and to the Department of Wildlife, Fisheries and Aquaculture at Mississippi State University for additional financial support. The Mississippi Cooperative Fish and Wildlife Research Unit is a cooperative effort of the Mississippi Department of Wildlife, Fisheries and Parks; Mississippi State University; and US Geological Survey. Any use of trade, firm or product names is for descriptive purposes only and does not imply endorsement by the US Government.
Author information
Authors and Affiliations
Corresponding author
Ethics declarations
Conflict of interest
The authors declare no conflict of interest.
Rights and permissions
About this article
Cite this article
Granzotti, R.V., Miranda, L.E., Agostinho, A.A. et al. Downstream impacts of dams: shifts in benthic invertivorous fish assemblages. Aquat Sci 80, 28 (2018). https://doi.org/10.1007/s00027-018-0579-y
Received:
Accepted:
Published:
DOI: https://doi.org/10.1007/s00027-018-0579-y