Yield-biodiversity trade-off in patchy fields of Miscanthus × giganteus

Abstract

Increasing crop productivity to meet rising demands for food and energy, but doing so in an environmentally sustainable manner, is one of the greatest challenges for agriculture to date. In Ireland, Miscanthus × giganteus has the potential to become a major feedstock for bioenergy production, but the economic feasibility of its cultivation depends on high yields. Miscanthus fields can have a large number of gaps in crop cover, adversely impacting yield and hence economic viability. Predominantly positive effects of Miscanthus on biodiversity reported from previous research might be attributable to high crop patchiness, particularly during the establishment phase. The aim of this research was to assess crop patchiness on a field scale and to analyse the relationship between Miscanthus yield and species richness and abundance of selected taxa of farmland wildlife. For 14 Miscanthus fields at the end of their establishment phase (4–5 years after planting), which had been planted either on improved grassland (MG) or tilled arable land (MT), we determined patchiness of the crop cover, percentage light penetration (LP) to the lower canopy, Miscanthus shoot density and height, vascular plants and epigeic arthropods. Plant species richness and noncrop vegetation cover in Miscanthus fields increased with increasing patchiness, due to higher levels of LP to the lower canopy. The species richness of ground beetles and the activity density of spiders followed the increase in vegetation cover. Plant species richness and activity density of spiders on both MT and MG fields, as well as vegetation cover and activity density of ground beetles on MG fields, were negatively associated with Miscanthus yield. In conclusion, positive effects of Miscanthus on biodiversity can diminish with increasing productivity. This matter needs to be considered when assessing the relative ecological impacts of developing biomass crops in comparison with other land use.

References Anderson GQA, Fergusson MJ (2006) Energy from biomass in the UK: sources, processes and biodiversity implications. Ibis, 148, 180–183. Archaux F, Chevalier R, Berthelot A (2010) Towards practices favourable to plant diversity in hybrid poplar plantations. Forest Ecology and Management, 259, 2410–2417. Asteraki E (1994) The carabid fauna of sown conservation margins around arable fields. In: Carabid Beetles: Ecology and Evolution. Series Entomologica (eds Desender K, Dufrêne M, Loreau M, Luff ML, Maelfait J-P), pp. 229–233. Springer, Dordrecht, the Netherlands. Asteraki E, Hanks C, Clements R (1995) The influence of different types of grassland field margin on carabid beetle (Coleoptera, Carabidae) communities. Agriculture, Ecosystems and Environment, 54, 195–202. Atkinson CJ (2009) Establishing perennial grass energy crops in the UK: a review of current propagation options for Miscanthus. Biomass and Bioenergy, 33, 752–759. Augustenborg CA, Finnan J, McBennett L, Connolly V, Priegnitz U, Müller C (2012) Farmers' perspectives for the development of a bioenergy industry in Ireland. Global Change Biology Bioenergy, 4, 597–610. Barton K (2013) MuMIn: Multi-model inference. R package version 1.9.13. Available at: http://CRAN.R-project.org/package=MuMIn (accessed 20 December 2013) Bates D, Maechler M, Bolker B, Walker S (2013) lme4: Linear mixed-effects models using Eigen and S4. R package version 1.0-5. Available at: http://CRAN.R-project.org/package=lme4 (accessed 20 December 2013). Baum S, Bolte A, Weih M (2012a) High value of short rotation coppice plantations for phytodiversity in rural landscapes. Global Change Biology Bioenergy, 4, 728–738. Baum S, Weih M, Bolte A (2012b) Stand age characteristics and soil properties affect species composition of vascular plants in short rotation coppice plantations. BioRisk, 7, 51–71. Bellamy PE, Croxton PJ, Heard MS et al. (2009) The impact of growing miscanthus for biomass on farmland bird populations. Biomass and Bioenergy, 33, 191–199. Benton TG, Vickery JA, Wilson JD (2003) Farmland biodiversity: is habitat heterogeneity the key? Trends in Ecology and Evolution, 18, 182–188. Bourke D, Stanley D, O'Rourke E et al. (2013) Response of farmland biodiversity to the introduction of bioenergy crops: effects of local factors and surrounding landscape context. Global Change Biology Bioenergy, doi: 10.1111/gcbb.12089. Burnham KP, Anderson DR (2002) Model Selection and Multimodel Inference: A Practical Information-theoretic Approach. Springer-Verlag, New York. Byrne M, Stone L (2011) The need for ‘duty of care’ when introducing new crops for sustainable agriculture. Current Opinion in Environmental Sustainability, 3, 50–54. Caslin B, Finnan J, Easson L (2010) Miscanthus Best Practice Guidelines. Teagasc and AFBI, Oak Park, Carlow, Ireland. Clapham SJ, Slater FM (2008) The biodiversity of established biomass grass crops. Aspects of Applied Biology, 90, 325–329. Clifton-Brown JC, Neilson B, Lewandowski I, Jones MB (2000) The modelled productivity of Miscanthus x giganteus (GREEF et DEU) in Ireland. Industrial Crops and Products, 12, 97–109. Coates A, Say A (1999) Ecological Assessment of Short Rotation Coppice. ETSU B/W5/00216/REP/1. Energy Technology Support Unit, Harwell, UK. Cope T, Gray A (2009) Grasses of the British Isles. BSBI Handbook No.13. Botanical Society of the British Isles, London. Cunningham SA, Attwood SJ, Bawa KS et al. (2013) To close the yield-gap while saving biodiversity will require multiple locally relevant strategies. Agriculture, Ecosystems and Environment, 173, 20–27. Dauber J, Jones MB, Stout JC (2010) The impact of biomass crop cultivation on temperate biodiversity. Global Change Biology Bioenergy, 2, 289–309. Dauber J, Brown C, Fernando AL et al. (2012) Bioenergy from “surplus” land: environmental and socio-economic implications. BioRisk, 7, 5–50. Day KR, Marshall S, Heaney C (1993) Associations between forest type and invertebrates: ground beetle community patterns in a natural oak wood and juxtaposed coniferous plantations. Forestry, 66, 37–50. Dennis P, Fry GLA (1992) Field margins: can they enhance natural enemy population densities and general arthropod diversity on farmland? Agriculture, Ecosystems and Environment, 40, 95–115. Dieterich B, Finnan J, Hochstrasser T, Hepp S, Augustenborg C, Müller C (2008) State and development of bioenergy in the Republic of Ireland. Aspects of Applied Biology, 90, 27–34. Eggers J, Tröltzsch K, Falcucci A et al. (2009) Is biofuel policy harming biodiversity in Europe? Global Change Biology Bioenergy, 1, 18–34. Fahrig L, Baudry J, Brotons L et al. (2011) Functional landscape heterogeneity and animal biodiversity in agricultural landscapes. Ecology Letters, 14, 101–112. Firbank LG (2008) Assessing the Ecological Impacts of Bioenergy Projects. Bioenergy Research, 1, 12–19. Foley JA, DeFries R, Asner GP et al. (2005) Global consequences of land use. Science, 309, 570–574. Fournier DA, Skaug HJ, Ancheta J et al. (2012) AD Model Builder: using automatic differentiation for statistical inference of highly parameterized complex nonlinear models. Optimization Methods and Software, 27, 233–249. Gabriel D, Sait SM, Kunin WE, Benton TG (2013) Food production vs. biodiversity: comparing organic and conventional agriculture. Journal of Applied Ecology, 50, 355–364. Gardiner MA, Tuell JK, Isaacs R, Gibbs J, Ascher JS, Landis DA (2010) Implications of three biofuel crops for beneficial arthropods in agricultural landscapes. Bioenergy Research, 3, 6–19. Geiger F, Bengtsson J, Berendse F et al. (2010) Persistent negative effects of pesticides on biodiversity and biological control potential on European farmland. Basic and Applied Ecology, 11, 97–105. Gustafsson L (1987) Plant conservation aspects of energy forestry – a new type of land use in Sweden. Forest Ecology and Management, 21, 141–161. Harvolk S, Kornatz P, Otte A, Simmering D (2013) Using existing landscape data to assess the ecological potential of Miscanthus cultivation in a marginal landscape. Global Change Biology Bioenergy, doi: 10.1111/gcbb.12078. Haughton AJ, Bond AJ, Lovett AA et al. (2009) A novel, integrated approach to assessing social, economic and environmental implications of changing rural land-use: a case study of perennial biomass crops. Journal of Applied Ecology, 46, 315–322. Heimer S, Nentwig W (1991) Spinnen Mitteleuropas. Paul Parey, Berlin. Karp A, Richter GM (2011) Meeting the challenge of food and energy security. Journal of Experimental Botany, 62, 3263–3271. Karp A, Shield I (2008) Bioenergy from plants and the sustainable yield challenge. New Phytologist, 179, 15–32. Knörzer H, Hartung H, Piepho H-P, Lewandowski I (2013) Assessment of variability in biomass yield and quality: what is an adequate size of sampling area for miscanthus? Global Change Biology Bioenergy, 5, 572–579. Lewandowski I, Clifton-Brown JC, Scurlock JMO, Huisman W (2000) Miscanthus: European experience with a novel energy crop. Biomass and Bioenergy, 19, 209–227. Luff ML (2007) The Carabidae (Ground Beetles) of Britain and Ireland. RES handbooks for the identification of British insects, vol 4, part 2 (2nd edn). Field Studies Council, Shrewsbury, UK. Maloney D, Drummond FA, Alford R (2003) Spider predation in agroecosystems: can spiders effectively control pest populations? Maine Agricultural and Forest Experiment Station Technical Bulletin, 190, 1–32. Marc P, Canard A, Ysnel F (1999) Spiders (Araneae) useful for pest limitation and bioindication. Agriculture, Ecosystems and Environment, 74, 229–273. McCree KJ (1981) Photosynthetically active radiation. In: Physiological Plant Ecology I. Encyclopedia of Plant Physiology 12/A (eds Lange OL, Nobel PS, Osmond CB, Ziegler H), pp. 41–55, Springer, Berlin, Germany. Meek B, Loxton D, Sparks T, Pywell R, Pickett H, Nowakowski M (2002) The effect of arable field margin composition on invertebrate biodiversity. Biological Conservation, 106, 259–271. Nuffield Council on Bioethics (2011) Biofuels: Ethical Issues. Nuffield Council on Bioethics, London. Available at: http://www.nuffieldbioethics.org (accessed 31 July 2013). Oxbrough AG, Gittings T, O'Halloran J, Giller PS, Smith GF (2005) Structural indicators of spider communities across the forest plantation cycle. Forest Ecology and Management, 212, 171–183. Oxbrough AG, Gittings T, O'Halloran J, Giller PS, Kelly TC (2006) The influence of open space on ground-dwelling spider assemblages within plantation forests. Forest Ecology and Management, 237, 404–417. Pedroli B, Elbersen B, Frederiksen P et al. (2013) Is energy cropping in Europe compatible with biodiversity? - Opportunities and threats to biodiversity from land-based production of biomass for bioenergy purposes. Biomass and Bioenergy, 55, 73–86. Pinheiro J, Bates D, DebRoy S, Sarkar D, and the R Development Core Team (2013) nlme: Linear and Nonlinear Mixed Effects Models. R package version 3.1-113. Available at: http://cran.r-project.org/web/packages/nlme/index.html (accessed 20 December 2013). Platnick NI (2012) The world spider catalog, version 13.0. American Museum of Natural History. Available at: http://research.amnh.org/iz/spiders/catalog (accessed 30 October 2012). doi: 10.5531/db.iz.0001. Price L, Bullard M, Lyons H, Anthony S, Nixon P (2004) Identifying the yield potential of Miscanthus x giganteus: an assessment of the spatial and temporal variability of M. x giganteus biomass productivity across England and Wales. Biomass and Bioenergy, 26, 3–13. Richter GM, Riche AB, Dailey AG, Gezan SA, Powlson DS (2008) Is UK biofuel supply from Miscanthus water-limited? Soil Use and Management, 24, 235–245. Roberts MJ (1987) The Spiders of Great Britain and Ireland. Harley Books, Colchester, UK. Roberts MJ (1995) Collins Field Guide to the Spiders of Britain and Northern Europe (1st edn). Harper Collins, London. Rowe RL, Street NR, Taylor G (2009) Identifying potential environmental impacts of large-scale deployment of dedicated bioenergy crops in the UK. Renewable and Sustainable Energy Reviews, 13, 271–290. Sage RB (1998) Short rotation coppice for energy: towards ecological guidelines. Biomass and Bioenergy, 15, 39–47. Sala OE, Sax D, Leslie H (2009) Biodiversity consequences of biofuel production. In: Biofuels: Environmental Consequences and Interactions with Changing Land Use (eds Howarth RW, Bringezu S), pp. 127–137. Cornell University, Ithaca, NY. Proceedings of the Scientific Committee on Problems of the Environment (SCOPE) International Biofuels Project Rapid Assessment. Available at: http://cip.cornell.edu/biofuels/ (accessed 15 April 2013). Schmidt MH, Clough Y, Schulz W, Westphalen A, Tscharntke T (2006) Capture efficiency and preservation attributes of different fluids in pitfall traps. Journal of Arachnology, 34, 159–162. Schwarz K-U, Greef JM, Schnug E (1995) Untersuchungen zur Etablierung und Biomassebildung von Miscanthus giganteus unter verschiedenen Umweltbedingungen. Landbauforschung Völkenrode Sonderheft, 155, 1–122. Semere T, Slater FM (2007a) Ground flora, small mammal and bird species diversity in Miscanthus (Miscanthus x giganteus) and reed canary-grass (Phalaris arundinacea) fields. Biomass and Bioenergy, 31, 20–29. Semere T, Slater FM (2007b) Invertebrate populations in Miscanthus (Miscanthus x giganteus) and reed canary-grass (Phalaris arundinacea) fields. Biomass and Bioenergy, 31, 30–39. Smeets EMW, Lewandowski IM, Faaij APC (2009) The economical and environmental performance of miscanthus and switchgrass production and supply chains in a European setting. Renewable and Sustainable Energy Reviews, 13, 1230–1245. Stace C (2010) New Flora of the British Isles (3rd edn). Cambridge University Press, Cambridge, UK. Stanley DA, Stout JC (2013) Quantifying the impacts of bioenergy crops on pollinating insect abundance and diversity: a field-scale evaluation reveals taxon-specific responses. Journal of Applied Ecology, 50, 335–344. Styles D, Thorne F, Jones MB (2008) Energy crops in Ireland: an economic comparison of willow and Miscanthus production with conventional farming systems. Biomass and Bioenergy, 32, 407–421. Teagasc (ed.) (2008) Farm Energy. Farm Diversification Manual. Oak Park, Carlow, Ireland. Uetz G (1991) Habitat structure and spider foraging. In: Habitat Structure. The Physical Arrangement of Objects in Space (eds Bell S, McCoy E, Mushinsky H), pp. 325–348. Chapman and Hall, London. Venables WN, Ripley BD (2002) Modern Applied Statistics with S (4th edn). Springer, New York. Wiens J, Fargione J, Hill J (2011) Biofuels and biodiversity. Ecological Applications, 21, 1085–1095. Woodcock BA, Potts SG, Westbury DB, Ramsay AJ, Lambert M, Harris SJ, Brown VK (2007) The importance of sward architectural complexity in structuring predatory and phytophagous invertebrate assemblages. Ecological Entomology, 32, 302–311. Zimmermann J, Styles D, Hastings A, Dauber J, Jones MB (2013) Assessing the impact of within crop heterogeneity (‘patchiness’) in young Miscanthus x giganteus fields on economic feasibility and soil carbon sequestration. Global Change Biology Bioenergy, doi: 10.1111/gcbb.12084.