Abstract
The sustained decline in habitat quality and community integrity highlights the importance of understanding how communities and environmental variation interactively contribute to ecosystem services. We performed a laboratory experiment manipulating effects of acclimation temperature (5, 15, 25, and 35°C) on resource acquisition, assimilation and subsequent ecosystem services provided by eight freshwater mussel species. Our results suggest that although freshwater mussels are broadly categorized as filter feeders, there are distinct nested functional guilds (thermally tolerant and sensitive) associated with their thermal performance. At 35°C, thermally tolerant species have increased resource assimilation and higher rates of contributed ecosystem services (nutrient excretion, benthic–pelagic coupling). Conversely, thermally sensitive species have decreased assimilation rates and display an array of functional responses including increased/decreased benthic–pelagic coupling and nutrient excretion. Although thermally sensitive species may be in poorer physiological condition at warmer temperatures, their physiological responses can have positive effects on ecosystem services. We extrapolated these results to real mussel beds varying in species composition to address how shifts in community composition coupled with climate change may shift their contributed ecological services. Comparative field data indicate that two co-existing, abundant species with opposing thermal performance (Actinonaias ligamentina, Amblema plicata) differentially dominate community biomass. Additionally, communities varying in the relative proportion of these species differentially influence the magnitude (benthic–pelagic coupling) and quality (N:P excretion) of ecosystem services. As species are increasingly threatened by climate change, greater emphasis should be placed on understanding the contribution of physiological stress to the integrity and functioning of ecosystems.
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References
Ackerly DD (2003) Community assembly, niche conservatism, and adaptive evolution in changing environments. Int J Plant Sci 164:165–184
APHA (1996) Standard methods for the examination of water and wastewater, 18 edn. American Public Health Association, American Water Works Association and Water Environment Federation, Washington
Baker SM, Hornbach DJ (2001) Seasonal metabolism and biochemcial composition of two unionid mussels, Actinonaias ligamentina and Amblema plicata. J Mollusc Stud 67:407–416
Berg DJ, Haag WR, Guttman SI, Sickel JB (1995) Mantle biopsy: a technique for nondestructive tissue-sampling of freshwater mussels. J North Am Benthol Soc 14:577–581
Bond EM, Chase JM (2002) Biodiversity and ecosystem functioning at local and regional spatial scales. Ecol Lett 5:467–470
Cardinale BJ, Palmer AR, Ives AR, Brooks SS (2005) Diversity–productivity relationships in streams vary as a function of the natural disturbance regime. Ecology 86:716–726
Christian AD, Smith BN, Berg DJ, Smoot JC, Findley RH (2004) Trophic position and potential food sources of 2 species of unionid bivalves (Mollusca: Unionidae) in 2 small Ohio streams. J North Am Benthol Soc 23:161–113
Cottenie (2005) Integrating environmental and spatial processes in ecological community dynamics. Ecol Lett 8:1175–1182
Covich AP, et al. (1997) Potential effects of climate change on aquatic ecosystems of the Great Plains of North America. Hydrol Processes 11:993–1021
Cross WF, Benstead JP, Frost PC, Thomas SA (2006) Ecological stoichiometry in freshwater benthic systems: recent progress and perspectives (vol 50, pg 1895, 2005). Freshwater Biol 51:986–987
Fridley JD (2001) The influence of species diversity on ecosystem productivity: how, where, and why? Oikos 93:514–526
Gafner K, Robinson CT (2007) Nutrient enrichment influences the responses of stream macroinvertebrates to disturbance. J North Am Benthol Soc 26:92–102
Hall SR, Smith VH, Lytle DA, Leibold MA (2005) Constraints on primary producer N: P stoichiometry along N: P supply ratio gradients. Ecology 86:1894–1904
Hooper DU (1998) The role of complementarity and competition in ecosystem responses to variation in plant diversity. Ecology 79:704–719
Horgan MJ, Mills EL (1997) Clearance rates and filtering activity of zebra mussel (Dreissena polymorpha): implications for freshwater lakes. Can J Fish Aquat Sci 54:249–255
IPCC (2001) Climate change 2001, synthesis report. A contribution of Working Groups I, II, and III to the third assessment report of the Intergovernmental Panel on Climate Change, Cambridge, UK
Loreau M, Hector A (2001) Partitioning selection and complementarity in biodiversity experiments. Nature 412:72–76
Matthews WJ, Zimmerman EG (1990) Potential effects of global warming on native fishes of the Southern Great-Plains and the Southwest. Fisheries 15:26–32
Matthews WJ, Vaughn CC, Gido KB, Marsh-Matthews E (2005) Southern Plains Rivers. In: Benke A, Cushing CE (eds) Rivers of North America. Elsevier, Amsterdam, pp 283–325
McGrady-Steed J, Morin PJ (2000) Biodiversity, density compensation, and the dynamics of populations and functional groups. Ecology 81:361–373
McIntyre PB, Jones LE, Flecker AS, Vanni MJ (2007) Fish extinctions alter nutrient recycling in tropical freshwaters. Proc Natl Acad Sci USA 104:4461–4466
McMahon RF, Bogan AE (2001) Mollusca: Bivalvia. In: Thorp JH, Covich AP (eds) Ecology and classification of North American freshwater invertebrates. Academic, New York
Morgan IJ, McDonald DG, Wood CM (2001) The cost of living for freshwater fish in a warmer, more polluted world. Glob Chang Biol 7:345–355
Mulholland PJ et al (1997) Effects of climate change on freshwater ecosystems of the south-eastern United States and the Gulf of Mexico. Hydrol Processes 11:949–970
Naeem S, Thompson LJ, Lawler SP, Lawton JH, Woodfin RM (1994) Declining biodiversity can alter the performance of ecosystems. Nature 368:734–737
Naimo TJ, Damschen ED, Rada RG, Monroe EM (1998) Nonlethal evaluation of the physiological health of unionid mussels: methods for biopsy and glycogen analysis. J North Am Benthol Soc 17:121–128
Petchey O, Gaston KJ (2002) Functional diversity (FD), species richness and community composition. Ecol Lett 5:402–411
Petchey O, Casey T, Jiang L, McPhearson PT, Price J (2002) Species richness, environmental fluctuations, and temporal change in total community biomass. Oikos 99:231–240
Portner HO (2002) Physiological basis of temperature-dependent biogeography: trade-offs in muscle design and performance in polar ectotherms. J Exp Biol 205:2217–2230
Spooner DE, Vaughn CC (2006) Context-dependent effects of freshwater mussels on stream benthic communities. Freshwater Biol 51:1016–1021
Strayer DL, Cole JJ, Likens GE, Buso DC (1981) Biomass and annual production of the freshwater mussel Elliptio complanata in an oligotrophic lake. Freshwater Biol 11:435–440
Strayer DL et al (2004) Changing perspectives on pearly mussels, North America’s most imperiled animals. Bioscience 54:429–439
Tilman D (1986) A consumer-resource approach to community structure. Am Zool 26:5–22
Vaughn CC, Hakenkamp CC (2001) The functional role of burrowing bivalves in freshwater ecosystems. Freshwater Biol 46:1431–1446
Vaughn CC, Spooner DE (2006) Unionid mussels influence macroinvertebrate assemblage structure in streams. J North Am Benthol Soc 25:691–700
Vaughn CC, Taylor CM (1999) Impoundments and the decline of freshwater mussels: a case study of an extinction gradient. Conserv Biol 13:912–920
Vaughn CC, Taylor CM, Eberhard KJ (1997) A comparison of the effectiveness of timed searches vs. quadrat sampling in mussel surveys. In: Cummings KS, Buchanan AC, Koch LM (eds) Conservation and management of freshwater mussels. II. Initiatives for the future. Proceedings of a UMRCC Symposium, 16–18 October 1995, St. Louis, Missouri. Upper Mississippi River Conservation Committee, Rock Island, pp 157–162
Vaughn CC, Spooner DE, Galbraith HS (2007) Context-dependent species identity effects within a functional group of filter-feeding bivalves. Ecology 88:1622–1634
Wardle DA, Peltzer DA (2003) Interspecific interactions and biomass allocation among grassland plant species. Oikos 100:497–506
Williams JD, Warren ML, Harris HL, Neves RJ (1993) Conservation status of the freshwater mussels of the United States and Canada. Fisheries 18:6–22
Yachi S, Loreau M (1999) Biodiversity and ecosystem productivity in a fluctuating environment: the insurance hypothesis. Proc Natl Acad Sci USA 96:1463–1468
Acknowledgements
We thank Heather Galbraith for laboratory and field help and stimulating discussions, M. Christopher Barnhart, K. David Hambright, William J. Matthews, and Robert W. Nairn for advice and manuscript comments, Daniel Hornbach and an anonymous reviewer for helpful comments on the manuscript, and William Matthews and Wendal Porter for use of environmental chambers. This project was funded by the National Science Foundation (DEB-0211010, DEB-0608247) and the Oklahoma Department of Wildlife Conservation (SWG T-10), and is submitted in partial fulfillment of the degree requirements for Doctor of Philosophy, Department of Zoology, University of Oklahoma, and is a contribution to the program of the Oklahoma Biological Survey.
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Communicated by Craig Osenberg.
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Spooner, D.E., Vaughn, C.C. A trait-based approach to species’ roles in stream ecosystems: climate change, community structure, and material cycling. Oecologia 158, 307–317 (2008). https://doi.org/10.1007/s00442-008-1132-9
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DOI: https://doi.org/10.1007/s00442-008-1132-9