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How do sheep affect plant communities and arthropod populations in temperate grasslands?

Published online by Cambridge University Press:  19 December 2011

A. Scohier  and
B. Dumont
A. Scohier
Affiliation:
INRA, UR1213 Herbivores, Theix, 63122 Saint-Genès-Champanelle, France
B. Dumont*
Affiliation:
INRA, UR1213 Herbivores, Theix, 63122 Saint-Genès-Champanelle, France
*
†E-mail: bertrand.dumont@clermont.inra.fr
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Abstract

Grasslands being used in sheep farming systems are managed under a variety of agricultural production, recreational and conservational objectives. Although sheep grazing is rarely considered the best method for delivering conservation objectives in seminatural temperate grasslands, the literature does not provide unequivocal evidence on the impact of sheep grazing on pasture biodiversity. Our aim was therefore to review evidence of the impacts of stocking rate, grazing period and soil fertility on plant communities and arthropod populations in both mesotrophic grasslands typical of agriculturally improved areas and in native plant communities. We therefore conducted a literature search of articles published up to the end of the year 2010 using ‘sheep’ and ‘grazing’ as keywords, together with variables describing grassland management, plant community structure or arthropod taxa. The filtering process led to the selection of 48 articles, with 42 included in the stocking rate dataset, 9 in the grazing period dataset and 10 in the soil fertility dataset. The meta-analysis did not reveal any significant trends for plant species richness or plant community evenness along a wide stocking rate gradient. However, we found frequent shifts in functional groups or plant species abundance that could be explained by the functional properties of the plants in the community. The meta-analysis confirmed that increasing soil fertility decreased plant species richness. Despite the very limited dataset, plant species richness was significantly greater in autumn-grazed pastures than in ungrazed areas, which suggests that choosing an appropriate grazing period would be a promising option for preserving biodiversity in sheep farming systems. Qualitative review indicated that low grazing intensity had positive effects on Orthoptera, Hemiptera (especially phytophagous Auchenorrhyncha) and, despite a diverse range of feeding strategies, for the species richness of Coleoptera. Lepidoptera, which were favoured by more abundant flowering plants, also benefited from low grazing intensities. Spider abundance and species richness were higher in ungrazed than in grazed pastures. In contrast, there are insufficient published studies to draw any firm conclusions on the benefits of late grazing or stopping fertilization on insect diversity, and no grounds for including any of this information in decision support tools at this stage.

Keywords

biodiversitygrazing periodinsectstocking ratesoil fertility
Type
Full Paper
Information
animal , Volume 6 , Issue 7 , 28 May 2012 , pp. 1129 - 1138
Copyright
Copyright © The Animal Consortium 2012

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References

Bakker, ES, Ritchie, ME, Olff, H, Milchunas, DG, Knops, JMH 2006. Herbivore impact on grassland plant diversity depends on habitat productivity and herbivore size. Ecology Letters 9, 780–788.Google Scholar
Bakker, JP, Berendse, F 1999. Constraints in the restoration of ecological diversity in grassland and heathland communities. Trends in Ecology and Evolution 14, 63–68.CrossRefGoogle ScholarPubMed
Barataud, J 2005. Orthoptères et milieux littoraux. Influence de la gestion des habitats herbacés sur les ressources trophiques et enjeux pour la biodiversité. Rapport Réserve Naturelle de Moëze-Oléron, 50 pp.Google Scholar
Blight, O, Fadda, S, Orgeas, J, Ponel, P, Buisson, E, Dutoit, T 2011. Using stone cover patches and grazing exclusion to restore ground-active beetle communities in a degraded pseudo-steppe. Journal of Insect Conservation 15, 561–572.CrossRefGoogle Scholar
Bockstaller, C, Guichard, L, Makowski, D, Aveline, A, Girardin, P, Plantureux, S 2008. Agri-environmental indicators to assess cropping and farming systems. A methodological review. Agronomy for Sustainable Development 28, 129–139.CrossRefGoogle Scholar
Bourn, NAD, Thomas, JA 2002. The challenge of conserving grassland insects at the margins of their range in Europe. Biological Conservation 104, 285–292.CrossRefGoogle Scholar
Bouchard, V, Tessier, M, Digaire, F, Vivier, JP, Valery, L, Gloaguen, JC, Lefeuvre, JC 2003. Sheep grazing as management tool in Western European saltmarshes. C. R. Biologies 326 (Suppl 1), S148–S157.Google Scholar
Bouwman, AF, Van der Hoek, KW, Eickhout, B, Soenario, I 2005. Exploring changes in world ruminant production systems. Agricultural Systems 84, 121–153.CrossRefGoogle Scholar
Branson, DH, Haferkamp, MR 2003. Effects of sheep grazing on grasshopper population dynamics and rangeland vegetation. Research Update for Fort Keogh Livestock and Range Research Laboratory, pp. 19–20.Google Scholar
Bullock, JM, Franklin, J, Stevenson, MJ, Silvertown, J, Coulson, SJ, Gregory, SJ, Tofts, R 2001. A plant trait analysis of responses to grazing in a long-term experiment. Journal of Applied Ecology 38, 253–267.Google Scholar
Cadotte, MW, Carscadden, K, Mirotchnick, N 2011. Beyond species: functional diversity and the maintenance of ecological processes and services. Journal of Applied Ecology 48, 1079–1087.CrossRefGoogle Scholar
Campbell, WB, Freeman, DC, Emlen, JM, López Ortiz, S 2010. Correlations between plant phylogenic and functional diversity in a high altitude cold salt desert depend on sheep grazing season: implications for range recovery. Ecological Indicators 10, 676–686.CrossRefGoogle Scholar
Carvell, C 2002. Habitat use and conservation of bumblebees (Bombus spp.) under different grassland management regimes. Biological Conservation 103, 33–49.CrossRefGoogle Scholar
Collinge, SK, Prudic, KL, Oliver, JC 2003. Effects of local habitat characteristics and landscape context on grassland butterfly diversity. Conservation Biology 17, 178–187.Google Scholar
De Bello, F, Lepš, J, Sebastià, MT 2006. Variations in species and functional plant diversity along climatic and grazing gradients. Ecography 29, 801–810.Google Scholar
Del Pozo, A, Ovalle, C, Casado, MA, Acosta, B, de Miguel, JM 2006. Effects of grazing intensity in grasslands of the Espinal of central Chile. Journal of Vegetation Science 17, 791–798.CrossRefGoogle Scholar
Demment, MW, Greenwood, GB 1988. Forage ingestion: effects of sward characteristics and body size. Journal of Animal Science 66, 2380–2392.Google Scholar
Dennis, P, Young, MR, Howard, CL, Gordon, IJ 1997. The response of epigeal beetles (Col: Carabidae, Staphylinidae) to varied grazing regimes on upland Nardus stricta grasslands. Journal of Applied Ecology 34, 433–443.CrossRefGoogle Scholar
Dennis, P, Young, MR, Gordon, IJ 1998. Distribution and abundance of small insects and arachnids in relation to structural heterogeneity of grazed, indigenous grasslands. Ecological Entomology 23, 253–264.Google Scholar
Dennis, P, Young, MR, Bentley, C 2001. The effects of varied grazing management on epigeal spiders, harvestmen and pseudoscorpions of Nardus stricta grassland in upland Scotland. Agriculture, Ecosystems and Environment 86, 39–57.CrossRefGoogle Scholar
Dennis, P, Doering, J, Stockan, JA, Jones, JR, Rees, ME, Vale, JE, Sibbald, AR 2004. Consequences for biodiversity of reducing inputs to upland temperate pastures: effects on beetles (Coleoptera) of cessation of nitrogen fertilizer application and reductions in stocking rates of sheep. Grass and Forage Science 59, 121–135.Google Scholar
Dennis, P, Skartveit, J, McCracken, DI, Pakeman, RJ, Beaton, K, Kunaver, A, Evans, DM 2008. The effects of livestock grazing on foliar arthropods associated with bird diet in upland grasslands of Scotland. Journal of Applied Ecology 45, 279–287.CrossRefGoogle Scholar
Dorrough, J, Ash, J, McIntyre, S 2004. Plant responses to livestock grazing frequency in an Australian temperate grassland. Ecography 27, 798–810.Google Scholar
Dumont, B, Petit, M, D'hour, P 1995. Choice of sheep and cattle between vegetative and reproductive cocksfoot patches. Applied Animal Behaviour Science 43, 1–15.Google Scholar
Dumont, B, Farruggia, A, Garel, JP, Bachelard, P, Boitier, E, Frain, M 2009. How does grazing intensity influence the diversity of plants and insects in a species-rich upland grassland on basalt soils? Grass and Forage Science 64, 92–105.CrossRefGoogle Scholar
Dumont, B, Carrère, P, Ginane, C, Farruggia, A, Lanore, L, Tardif, A, Decuq, F, Darsonville, O, Louault, F 2011. Plant–herbivore interactions affect the initial direction of community changes in an ecosystem manipulation experiment. Basic and Applied Ecology 12, 187–194.CrossRefGoogle Scholar
Duru, M, Cruz, P, Al Haj Khaled, R, Ducourtieux, C, Theau, JP 2008. Relevance of plant functional types based on leaf dry matter content for assessing digestibility of native grass species and species-rich grassland communities in spring. Agronomy Journal 100, 1622–1630.Google Scholar
Dutoit, T, Alard, D, Lambert, J, Frileux, PN 1995. Biodiversité et valeur agronomique des pelouses calcicoles: effets du pâturage ovin. Fourrages 142, 145–158.Google Scholar
Eddy, DA 2002. Managing native grassland: a guide to management for conservation, production and land protection. WWF Australia, Sydney, NSW.Google Scholar
Emanuelsson, U 2008. Semi-natural grasslands in Europe today. Grassland Science in Europe 13, 3–8.Google Scholar
Farruggia, A, Theau, JP, Louault, F, Dumont, B 2008. Comparaison d'outils de caractérisation de la flore pour diagnostiquer l'effet des modes de gestion sur les dynamiques de végétation des prairies permanents. Fourrages 195, 301–314.Google Scholar
Fayolle, A 2008. Structure des communautés de plantes herbacées sur les Grands Causses: stratégies fonctionnelles des espèces et interactions interspécifiques. Ph.D Sup Agro Montpellier, 284 pp.Google Scholar
Fenner, M, Palmer, L 1998. Grassland management to promote diversity: creation of a patchy sward by mowing and fertilizer regimes. Field Studies 9, 313–324.Google Scholar
Fothergill, M, Davies, DA, Morgan, CT, Jones, S, Rees, E 2002. Changes in floristic diversity associated with reduction of fertilizer inputs and grazing to upland pasture. Grassland Science in Europe 7, 784–785.Google Scholar
Garcia, F, Carrère, P, Soussana, JF, Baumont, R 2003. The ability of sheep at different stocking rates to maintain the quality and quantity of their diet during the grazing season. Journal of Agricultural Science (Cambridge) 140, 113–124.Google Scholar
Gibson, CWD, Brown, VK, Losito, L, McGavin, GC 1992a. The response of invertebrate assemblies to grazing. Ecography 15, 166–176.CrossRefGoogle Scholar
Gibson, CWD, Hambler, C, Brown, VK 1992b. Changes in spider (Araneae) assemblages in relation to succession and grazing management. Journal of Applied Ecology 29, 132–142.Google Scholar
Grime, JP 1979. Plant strategies and vegetation processes. John Wiley & Sons, Chichester, UK.Google Scholar
Gross, N, Bloor, JMG, Louault, F, Maire, V, Soussana, JF 2009. Effects of land-use change on productivity depend on small-scale plant species diversity. Basic and Applied Ecology 10, 687–696.CrossRefGoogle Scholar
Hodgson, J, Forbes, TDA, Armstrong, RH, Beattie, MM, Hunter, EA 1991. Comparative studies of the ingestive behaviour and herbage intake of sheep and cattle grazing indigenous hill plant communities. Journal of Applied Ecology 28, 205–227.Google Scholar
Hofmann, TA, Mason, CF 2006. Importance of management on the distribution and abundance of Staphylinidae (Insecta: Coleoptera) on coastal grazing marshes. Agriculture, Ecosystems and Environment 114, 397–406.Google Scholar
Hulme, PD, Pakeman, RJ, Torvell, L, Fisher, JM, Gordon, IJ 1999. The effects of controlled sheep grazing on the dynamics of upland Agrostis-Festuca grassland. Journal of Applied Ecology 36, 886–900.CrossRefGoogle Scholar
Huston, MA 1994. Biological diversity. The coexistence of species on changing landscapes. Cambridge University Press, Cambridge, UK.Google Scholar
Hutchinson, KJ, King, KL 1980. The effects of sheep stocking level on invertebrate abundance, biomass and energy utilization in a temperate, sown grassland. Journal of Applied Ecology 17, 369–387.CrossRefGoogle Scholar
Janssens, F, Peeters, A, Tallowin, JRB, Bakker, JP, Bekker, RM, Fillat, F, Oomes, MJM 1998. Relationship between soil chemical factors and grassland diversity. Plant and Soil 202, 69–78.CrossRefGoogle Scholar
Keiller, SW, Buse, A, Cherrett, JM 1995. Effects of sheep grazing on upland arthropods in Snowdonia & Mid-Wales. CCW Contract Science Report No. 120: FC/ 73-01-14, 77pp.Google Scholar
King, KL, Hutchinson, KJ 1976. The effects of sheep stocking intensity on the abundance and distribution of mesofauna in pastures. Journal of Applied Ecology 13, 41–55.CrossRefGoogle Scholar
Klimek, S, Richter Gen. Kemmermann, A, Hofmann, M, Isselstein, J 2007. Plant species richness and composition in managed grasslands: the relative importance of field management and environmental factors. Biological Conservation 134, 559–570.CrossRefGoogle Scholar
Krahulec, F, Skálová, H, Herben, T, Hadincová, V, Wildová, R, Pechácková, S 2001. Vegetation changes following sheep grazing in abandoned mountain meadows. Applied Vegetation Science 4, 97–102.Google Scholar
Li, C, Hao, X, Zhao, M, Han, G, Willms, WD 2008. Influence of historic sheep grazing on vegetation and soil properties of a desert steppe in inner mongolia. Agriculture, Ecosystems and Environment 128, 109–116.CrossRefGoogle Scholar
Littlewood, NA 2008. Grazing impacts on moth diversity and abundance on a Scottish upland estate. Insect Conservation Diversity 1, 151–160.Google Scholar
Louault, F, Pillar, VD, Aufrère, J, Garnier, E, Soussana, JF 2005. Plant traits and functional types in response to reduced disturbance in a semi-natural grassland. Journal of Vegetation Science 16, 151–160.CrossRefGoogle Scholar
Lunt, ID 2005. Technical Report 18. Effects of stock grazing on biodiversity values in temperate native grasslands and grassy woodlands in SE Australia: a literature review. Environment ACT, Canberra.Google Scholar
Maczey, N 2004. The Auchenorrhyncha communities of chalk grassland in Southern England. PhD thesis, University of Koblenz, Germany.Google Scholar
Marini, L, Fontana, P, Scotton, M, Klimek, S 2008. Vascular plant and Orthoptera diversity in relation to grassland management and landscape composition in the European Alps. Journal of Applied Ecology 45, 361–370.CrossRefGoogle Scholar
Marriott, CA, Bolton, GR, Barthram, GT, Fisher, JM, Hood, K 2002. Early changes in species composition of upland sown grassland under extensive grazing management. Applied Vegetation Science 5, 87–98.CrossRefGoogle Scholar
Marriott, CA, Fothergill, M, Jeangros, B, Scotton, M, Louault, F 2004. Long-term impacts of extensification of grassland management on biodiversity and productivity in upland areas. A review. Agronomie 24, 447–462.Google Scholar
Marriott, CA, Hood, K, Fisher, JM, Pakeman, RJ 2009. Long-term impacts of extensive grazing and abandonment on the species composition, richness, diversity and productivity of agricultural grassland. Agriculture, Ecosystems and Environment 134, 190–200.Google Scholar
Mayer, R, Kaufmann, R, Vorhauser, K, Erschbamer, B 2009. Effects of grazing exclusion on species composition in high-altitude grasslands of the Central Alps. Basic and Applied Ecology 10, 447–455.Google Scholar
Meisser, M, Chatelain, C 2010. Rotational grazing with sheep on a high altitude pasture: impact on the vegetation. Recherche Agronomique Suisse 1, 216–221.Google Scholar
Milchunas, DG, Sala, OE, Lauenroth, WK 1988. A generalized model of the effects of grazing by large herbivores on grassland community structure. The American Naturalist 132, 87–106.CrossRefGoogle Scholar
Milotić, T, Erfanzadeh, R, Pétillon, J, Maelfait, JP, Hoffmann, M 2010. Short-term impact of grazing by sheep on vegetation dynamics in a newly created salt-marsh site. Grass and Forage Science 65, 121–132.Google Scholar
Moog, D, Poschlod, P, Kahmen, S, Schreiber, KF 2002. Comparison of species composition between different grassland management treatments after 25 years. Applied Vegetation Science 5, 99–106.CrossRefGoogle Scholar
Morón-Ríos, A, Rodríguez, MA, Pérez-Camacho, L, Rebollo, S 2010. Effects of seasonal grazing and precipitation regime on the soil macroinvertebrates of a Mediterranean old-field. European Journal of Soil Biology 46, 91–96.Google Scholar
Morris, MG 2000. The effects of structure and its dynamics on the ecology and conservation of arthropods in British grasslands. Biological Conservation 95, 129–142.CrossRefGoogle Scholar
Morris, MG, Clarke, RT, Rispin, WE 2005. The success of a rotational grazing system in conserving the diversity of chalk grassland Auchenorrhyncha. Journal of Insect Conservation 9, 363–374.Google Scholar
Norton, DA, Espie, PR, Murray, W, Murray, J 2006. Influence of pastoral management on plant biodiversity in a depleted short tussock grassland, Mackenzie Basin. New Zealand Journal of Ecology 30, 335–344.Google Scholar
Öckinger, E, Eriksson, AK, Smith, HG 2006. Effects of grassland abandonment, restoration and management on butterflies and vascular plants. Biological Conservation 133, 291–300.CrossRefGoogle Scholar
Olff, H, Ritchie, ME 1998. Effects of herbivores on grassland plant diversity. Trends in Ecology & Evolution 13, 261–265.CrossRefGoogle ScholarPubMed
Oliver, I, Garden, D, Greenslade, PJ, Haller, B, Rodgers, D, Seeman, O, Johnston, B 2005. Effects of fertiliser and grazing on the arthropod communities of a native grassland in south-eastern Australia. Agriculture, Ecosystems and Environment 109, 323–334.CrossRefGoogle Scholar
Osem, Y, Perevolotsky, A, Kigel, J 2002. Grazing effect of diversity of annual plant communities in a semi-arid rangeland: interactions with small-scale spatial and temporal variation in primary productivity. Journal of Ecology 90, 936–946.CrossRefGoogle Scholar
Ostermann, OP 1998. The need for management of nature conservation sites designated under Natura 2000. Journal of Applied Ecology 35, 968–973.CrossRefGoogle Scholar
Parfitt, RL, Yeates, GW, Ross, DJ, Schon, NL, Mackay, AD, Wardle, DA 2010. Effect of fertilizer, herbicide and grazing management of pastures on plant and soil communities. Applied Soil Ecology 45, 175–186.Google Scholar
Poschlod, P, Bonn, S 1998. Changing dispersal processes in the central European landscape since the last ice age: an explanation for the actual decrease of plant species richness in different habitats? Acta Botanica Neerlandica 47, 27–44.Google Scholar
Pöyry, J, Luoto, M, Paukkunen, J, Pykälä, J, Raatikainen, K, Kuussaari, M 2006. Different responses of plants and herbivore insects to a gradient of vegetation height: an indicator of the vertebrate grazing intensity and successional age. Oikos 115, 401–412.CrossRefGoogle Scholar
Schon, NL, Mackay, AD, Minor, MA, Yeates, GW, Hedley, MJ 2008. Soil fauna in grazed New Zealand hill country pastures at two management intensities. Applied Soil Ecology 40, 218–228.CrossRefGoogle Scholar
Scimone, M, Rook, AJ, Garel, JP, Sahin, N 2007. Effects of livestock breed and grazing intensity on grazing systems: 3. Effects on diversity of vegetation. Grass and Forage Science 62, 172–184.CrossRefGoogle Scholar
Sebastià, MT, de Bello, F, Puig, L, Taull, M 2008. Grazing as a factor structuring grasslands in the Pyrenees. Applied Vegetation Science 11, 215–222.Google Scholar
Sjödin, NE 2007. Pollinator behavioural responses to grazing intensity. Biodiversity and Conservation 16, 2103–2121.CrossRefGoogle Scholar
Smith, RS, Buckingham, H, Bullard, MJ, Shiel, RS, Younger, A 1996a. The conservation management of mesotrophic (meadow) grassland in northern England. 1. Effects of grazing, cutting date and fertilizer on the vegetation of a traditionally managed sward. Grass and Forage Science 51, 278–291.CrossRefGoogle Scholar
Smith, RS, Corkhill, P, Shiel, RS, Millward, D 1996b. The conservation management of mesotrophic (meadow) grassland in Northern England. 2. Effects of grazing, cutting date, fertilizer and seed application on the vegetation of an agriculturally improved sward. Grass and Forage Science 51, 292–305.Google Scholar
Statistical Analysis System 1999. SAS/STAT guide. SAS Institute Inc., Cary, NC, USA.Google Scholar
Stewart, GB, Pullin, AS 2008. The relative importance of grazing stock type and grazing intensity for conservation of mesotrophic ‘old meadow’ pasture. Journal of Nature Conservation 16, 175–185.Google Scholar
Suding, KN, Collins, SL, Gough, L, Clark, C, Cleland, EE, Gross, KL, Milchunas, DG, Pennings, S 2005. Functional- and abundance-based mechanisms explain diversity loss due to N fertilization. Proceedings of the National Academy of Science 102, 4387–4392.CrossRefGoogle ScholarPubMed
Tallowin, JRB, Smith, REN, Goodyear, J, Vickery, JA 2005. Spatial and structural uniformity of lowland agricultural grassland in England: a context for low biodiversity. Grass and Forage Science 60, 225–236.Google Scholar
Treweek, JR, Watt, TA, Hambler, C 1997. Integration of sheep production and nature conservation: experimental management. Journal of Experimental Management 50, 193–210.Google Scholar
Turner, V, Zimmer, H 2007. Long-term ecological grazing project: annual milestone report to Grain & Graze. Technical Report, Department of Sustainability and Environment, Arthur Rylah Institute for Environmental Research, Melbourne.Google Scholar
Vickery, JA, Tallowin, JR, Feber, RE, Asteraki, EJ, Atkinson, PW, Fuller, RJ, Brown, VK 2001. The management of lowland neutral grasslands in Britain: effects of agricultural practices on birds and their food resources. Journal of Applied Ecology 38, 647–664.Google Scholar
WallisDeVries, MF, Parkinson, AE, Dulphy, JP, Sayer, M, Diana, E 2007. Effects of livestock breed and grazing intensity on biodiversity and production in grazing systems. 4. Effects on animal diversity. Grass and Forage Science 62, 185–197.Google Scholar
Warren, J, Christal, A, Wilson, F 2002. Effects of sowing and management on vegetation succession during grassland habitat restoration. Agriculture, Ecosystems and Environment 93, 393–402.Google Scholar
Woodcock, BA, Lawson, CS, Mann, DJ, McDonald, AW 2006. Effects of grazing management on beetle and plant assemblages during the re-creation of a flood-plain meadow. Agriculture Ecosystems and Environment 116, 225–234.CrossRefGoogle Scholar
Zhou, HK, Tang, YH, Zhao, XQ, Zhou, L 2006. Long-term grazing alters species composition and biomass of a shrub meadow on the Qinghai–Tibet Plateau. Pakistan Journal of Botany 38, 1055–1069.Google Scholar