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Seasonality of feral horse grazing and invasion of Pinus halepensis in grasslands of the Austral Pampean Mountains (Argentina): management considerations

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Abstract

The introduction of domestic ungulates has altered the natural grazing regime, promoting the invasion of exotic woody plants being seasonality or stoking season one of the key factors regulating the grazing regime. The Pampean Mountain grasslands of Central Argentina have been intensively transformed by the presence of feral horse populations that have increased the last 40 years, coinciding with an increased abundance of Pinus halepensis dispersed from cultivated stands. In this study, we evaluated the effect of the seasonal variation in perennial grasses defoliation (no defoliation; continuous defoliation; defoliation during autumn-winter and defoliation during spring-summer) on the establishment of P. halepensis seedlings and the response of the dominant perennial grasses (Nasella tenuis and Piptochaetium lejopodum) to defoliation in areas with different grazing histories, following a split-plot design. The establishment of P. halepensis was highest in the grazed areas and in treatments where the defoliation of the perennial grasses was practiced throughout the year or during autumn-winter. Perennial grasses respond differently to defoliation according to the grazing history. In the grazed areas, defoliation negatively affected the perennial grasses during all the study period, showing the scarce resilience after grazing while in ungrazed areas, the perennial grasses were little affected by the seasonality of defoliation. Both, above- and belowground competition affected the establishment of P. halepensis, according to defoliation treatment and grazing history. The information obtained allows the elaboration of management recommendations to avoid the propagation of P. halepensis; therefore, the seasonal management of the grazing is a recommended practice toprevent or reduce the intensity of feral horse grazing during the autumn and winter months.

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References

  • Allen VG, Batello C, Berretta EJ, Hodgson J, Kothmann M, Li X, McIvor J, Milne J, Morris C, Peeters A, Sanderson M (2011) An international terminology for grazing lands and grazing animals. Grass Forage Sci 66:2–28

    Google Scholar 

  • Alpert P, Bone E, Holzapfel C (2000) Invasiveness, invasibility and the role of environmental stress in the spread of non-native plants. Perspect Plant Ecol 3:52–66

    Google Scholar 

  • Anadon-Rosell A, Rixen C, Cherubini P, Wipf S, Hagedorn F, Dawes MA (2014) Growth and phenology of three dwarf shrub species in a six-year soil warming experiment at the alpine treeline. PLoS ONE 9(6):e100577. https://doi.org/10.1371/journal.pone.0100577

    Article  PubMed  PubMed Central  CAS  Google Scholar 

  • Anderson MT, Frank DA (2003) Defoliation effects on reproductive biomass: Importance of scale and timing. J Range Manag 56:501–516

    Google Scholar 

  • Andrade BO, Koch C, Boldrini II, Velez-Martín E, Hasenack H, Hermann J, Kollmann J, Pillar VD, Overbeck GE (2015) Grassland degradation and restoration: a conceptual frame work of stages and thresholds illustrated by southern Brazilian grasslands. Nat Conservação 13:95–104

    Google Scholar 

  • Archer S, Smeins FF (1991) Ecosystem–level processes. In: Heitschmidt RK, Stuth JW (eds) Grazing management: an ecological perspective. Timberline Press, Portland, pp 109–139

    Google Scholar 

  • Archer SR, Andersen EM, Predick KI, Schwinning S, Steidl RJ, Woods SR (2017) Woody plant encroachment: causes and consequences. In: Briske D (ed) Rangeland systems. Springer series on environmental management. Springer, Cham

    Google Scholar 

  • Augustine DJ, McNaughton SJ (2004) Temporal asynchrony in soil nutrient dynamics and plant growth in a semi-arid savanna ecosystem. Ecosystems 7:829–840

    CAS  Google Scholar 

  • Austrheim G, Solberg EJ, Mysterud A (2011) Spatio-temporal variation in large herbivore pressure in Norway during 1949–1999: Has decreased grazing by livestock been countered by increased browsing by cervids? Wildlife Biol 17:286–298

    Google Scholar 

  • Averett JP, Endress BA, Rowland MM, Naylor BJ, Wisdom MJ (2017) Wild ungulate herbivory suppresses deciduous woody plant establishment following salmonid stream restoration. Forest Ecol Manag 391:135–144

    Google Scholar 

  • Bakker ES, Ritchie ME, Olff H, Milchunas DG, Knops JMH (2006) Herbivore impact on grassland plant diversity depends on habitat productivity and herbivore size. Ecol Lett 9:780–788. https://doi.org/10.1111/j.1461-0248.2006.00925.x

    Article  PubMed  Google Scholar 

  • Becerra PI, Bustamante RO (2008) The effect of herbivory on seedling survival of the invasive exotic species Pinus radiata and Eucalyptus globulus in a Mediterranean ecosystem of Central Chile. For Ecol Manag 256:1573–1578

    Google Scholar 

  • Beever EA, Herrick JE (2006) Effects of feral horses in Great Basin landscapes on soils and ants: direct and indirect mechanisms. J Arid Environ 66:96–112

    Google Scholar 

  • Belayneh A, Tessema ZK (2017) Mechanism of bush encroachment and its inter-connection with rangeland degradation in semi-arid African ecosystems: a review. J Arid Land 9:299–312

    Google Scholar 

  • Besaw LM, Thelen GC, Sutherland S, Metlen K, Callaway RM (2011) Disturbance, resource pulses and invasion: short-term shifts in competitive effects, not growth responses, favour exotic annuals. J Appl Ecol 49:998–1006

    Google Scholar 

  • Bilenca D, Miñarro F (2004) Identificación de Áreas Valiosas de Pastizal (AVPs) en las Pampas y Campos de Argentina, Uruguay y sur de Brasil. Fundación Vida Silvestre Argentina, Buenos Aires

    Google Scholar 

  • Bloor J, Leadley P, Barthes L (2008) Responses of Fraxinus excelsior seedlings to grass-induced above- and below-ground competition. Plant Ecol 194(2):293–304

    Google Scholar 

  • Borer ET, Grace JB, Harpole WS, Mac Dougall S, Seabloom EW (2017) A decade of insights into grassland ecosystem responses to global environmental change. Nat Ecol Evol 1:0118

    Google Scholar 

  • Briske DD (2017) Rangeland systems. Processes, management and challenges. Springer, Cham

    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. J Appl Ecol 38:253–267

    Google Scholar 

  • Burgos J (1968) El clima de la provincia de Buenos Aires en relación con la vegetación natural y el suelo. Flora de la Provincia de Buenos Aires. Colección Científica INTA, Buenos Aires

    Google Scholar 

  • Burkart SB, León RJ, Movia CP (1990) Inventario fitosociológico del pastizal de la Depresión del Salado (Prov. de Bs.As.) en un área representativa de sus principales ambientes. Darwiniana 30:27–69

    Google Scholar 

  • Burkart SE, Garbulsky MF, Ghersa CM, Guerschman JP, León RL, Oesterheld M, Paruelo JM, Perelman SB (2005) Las comunidades potenciales del pastizal pampeano bonaerense. In: Oesterheld M, Aguiar M, Ghersa C, Paruelo J (eds) La heterogeneidad de la vegetación de los agroecosistemas. Un homenaje a Rolando León. Editorial Facultad de Agronomía, UBA, Buenos Aires, pp 379–399

    Google Scholar 

  • Cabrera AL (1976) Regiones Fitogeográficas Argentinas. In: Parodi L (ed) Enciclopedia Argentina de Agricultura y Jardinería II. Acme, Buenos Aires, pp 1–85

    Google Scholar 

  • Carrillo J, Siemann E (2016) A native plant competitor mediates the impact of above- and belowground damage on an invasive tree. Ecol Appl 26:2060–2071. https://doi.org/10.1002/eap.1359

    Article  PubMed  Google Scholar 

  • Cesa A, Paruelo JM (2011) Changes in vegetation structure induced by domestic grazing in Patagonia (Southern Argentina). J Arid Environ 75:1129–1135

    Google Scholar 

  • Chaneton EJ, Mazía N, Machera M, Uchitel A, Ghersa CM (2004) Establishment of honey locust (Gleditsia triacanthos) in burned pampean grasslands. Weed Technol 18:1325–1329

    Google Scholar 

  • Chaneton EJ, Mazía N, Batista WB, Rolhauser AG, Ghersa CM (2012) Woody plant invasions in Pampa grasslands: a biogeographical and community assembly perspective. In: Myster RW (ed) Ecotones between forest and grassland. Springer, Berlin, pp 115–144

    Google Scholar 

  • Chirara C, Frost P, Gwarazimba VE (1998) Grass defoliation affecting survival and growth of seedlings of Acacia karroo, an encroaching species in Southwester Zimbabwe. Afr J Range For Sci 15(1–2):41–47. https://doi.org/10.1080/10220119.1998.9647939

    Article  Google Scholar 

  • Colautti RI, Grigorovich IA, MacIsaac HJ (2006) Propagule pressure: a null model for biological invasions. Biol Invasions 8:1023–1037

    Google Scholar 

  • Danvir RE (2018) Multiple-use management of western U.S. rangelands: wild horses, wildlife, and livestock. Hum-Wildl Interact 12:5–17

    Google Scholar 

  • Davies KW, Johnson DD (2017) Established perennial vegetation provides high resistance to reinvasion by exotic annual grasses. Rangeland Ecol Manag 70:748–754

    Google Scholar 

  • Davies KW, Collins G, Boyd CS (2014) Effects of feral free-roaming horses on semi-arid rangeland ecosystems: an example from the sagebrush steppe. Ecosphere 5:1–14

    Google Scholar 

  • Davis MR, Lang LH (1991) Increased nutrient availability in top soils under conifers in the South Island high country. New Zeal J For Sci 21:165–179

    CAS  Google Scholar 

  • Davis MA, Grime JP, Thompson K (2000) Fluctuating resources in plant communities: a general theory of invasibility. J Ecol 88:528–534

    Google Scholar 

  • Davis SC, Burkle LA, Cross WF, Cutting KA (2014) The effects of timing of grazing on plant and arthropod communities in high-elevation grasslands. PLoS ONE 9(10):e110460. https://doi.org/10.1371/journal.pone.0110460

    Article  PubMed  PubMed Central  CAS  Google Scholar 

  • Davis AJ, Singh KK, Thill JC, Meentemeyer RK (2016) Accounting for residential propagule pressure improves prediction of urban plant invasion. Ecosphere 7(3):e01232. https://doi.org/10.1002/ecs2.1232

    Article  Google Scholar 

  • de Villalobos AE, Schwerdt L (2017) Feral horses and alien plants: effects on the structure and function of the Pampean Mountain grasslands (Argentina). Ecoscience 25:49–60

    Google Scholar 

  • de Villalobos AE, Zalba SM (2010) Continuous feral horse grazing and grazing exclusion in mountain pampean grasslands in Argentina. Acta Oecol 36:514–519

    Google Scholar 

  • de Villalobos AE, Zalba SM, Peláez DV (2011) Pinus halepensis invasion in mountain pampean grassland: effects of feral horses grazing on seedling establishment. Environ Res 111:953–959

    PubMed  Google Scholar 

  • DeGasperis G, Motzkin G (2007) Windows of opportunity: Historical and ecological control of Berberis thinbergii invasion. Ecology 88:3115–3125

    PubMed  Google Scholar 

  • Dorrough J, Ash J, McIntyre S (2004) Plant responses to livestock grazing frequency in an Australian temperate grassland. Ecography 27(6):798–810

    Google Scholar 

  • Eddelman LE, Miller PM, Miller RF, Dysart PL (1994) Western Juniperus woodlands (of the Pacific Northwest). Science Assessment. Interior Columbia Basin Ecosystem Management Project. http://www.sagebrushsea.org/threatjuniperinvasion.htm

  • Fensham RJ, Donald S, Dwyer JM (2013) Propagule pressure, not fire or cattle grazing, promotes invasion of buffel grass Cenchrus ciliaris. J Appl Ecol 50:138–146

    Google Scholar 

  • Ferraro DO, Oesterheld M (2002) Effect of defoliation on grass growth. A quantitative review. Oikos 98:125–133

    Google Scholar 

  • Firn J, Price JN, Whalley RDB (2013) Using strategically applied grazing to manage invasive alien plants in novel grasslands. Ecol Process. https://doi.org/10.1186/2192-1709-2-26

    Article  Google Scholar 

  • Frank DA, McNaughton SJ, Tracy BF (1998) Ecology of the earth’s grazing ecosystems. BioScience 48:513–522

    Google Scholar 

  • Gotelli NJ, Ellison AM (2004) A primer of ecological statistics. Sinauer Associates Inc, Sunderland, MA

    Google Scholar 

  • Hayes GF, Holl KD (2003) Cattle grazing impacts on annual forbs and vegetation composition on mesic grasslands on California. Conserv Biol 17:1694–1702

    Google Scholar 

  • Hobbs RJ (2000) Land-use changes and invasion. In: Mooney HA, Hobbs RJ (eds) Invasive species in a changing world. Island Press, Washington, DC, pp 55–64. https://doi.org/10.1071/RJ12074

    Chapter  Google Scholar 

  • Holmgren M (2002) Exotic herbivores as drivers of plant invasions and switch to ecosystem alternative states. Biol Invas 4:25–33

    Google Scholar 

  • Jackson RB, Mooney HA, Schulze ED (1997) A global budget for fine root biomass, surface area, and nutrient contents. Proc Natl Acad Sci USA 94:7362–7366

    PubMed  CAS  Google Scholar 

  • James SE, Pärtell M, Wilson SD, Peltzer DA (2003) Temporal heterogeneity of soil moisture in grassland and forest. J Ecol 91:234–239

    Google Scholar 

  • Khuroo AA, Reshi ZA, Malik AH, Weber E, Rashid I, Dar GH (2012) Alien flora of India: taxonomic composition, invasion status and biogeographic affiliations. Biol Invasions 14:99–113

    Google Scholar 

  • Kikoti IA, Mligo C (2015) Impacts of livestock grazing on plant species composition in montane forests on the northern slope of Mount Kilimanjaro, Tanzania. Int J Biodivers Sci Ecosyst Serv Manag 11:114–127

    Google Scholar 

  • Köchy M, Wilson SD (2000) Competitive effects of shrubs and grasses in prairie. Oikos 91:385–395

    Google Scholar 

  • Kristensen MJ, Frangi JL (1995) Mesoclimas de pastizales de la Sierra de la Ventana. Ecol Austral 5:5–64

    Google Scholar 

  • Leonard SWJ, Kirkpatrick JB (2004) Effects of grazing management and environmental factors on native grasslands and grassy woodlands, Northern Midlands, Tasmania. Aust J Bot 52:529–542

    Google Scholar 

  • Lett MS, Knapp A (2005) Woody plant encroachment and removal in mesic grassland: production and composition responses of herbaceous vegetation. Am Midl Nat 153:217–231

    Google Scholar 

  • Lockwood JA, Lockwood JR (1993) Catastrophe theory: a unified paradigm for rangeland ecosystems dynamics. J Range Manag 46:282–288

    Google Scholar 

  • Loydi A, Zalba SM (2009) Feral horses dung piles as potential invasion windows for alien plant species in natural grasslands. Plant Ecol 201:471–480

    Google Scholar 

  • Maron J, Vilá M (2001) When do herbivores affect plant invasion? Evidence for the natural enemies and biotic resistance hypotheses. Oikos 95:361–373

    Google Scholar 

  • Mavromihalis A, Dorrough J, Clark SG, Turner V, Moxham C (2013) Manipulating livestock grazing to enhance native plant diversity and cover in native grasslands. Rangeland J 35:95–108

    Google Scholar 

  • Mazia N, Chaneton EJ, Ghersa CM (2019) Disturbance types, herbaceous composition, and rainfall season determine exotic tree invasion in novel grassland. Biol Invasions 21:1351–1363

    Google Scholar 

  • McNaughton SJ (1993) Grasses and grazers, science and management. Ecol Appl 3:17–20

    PubMed  CAS  Google Scholar 

  • Medan D, Torretta JP, Hodara K, de la Fuente E, Montaldo NH (2011) Effects of agriculture expansion and intensification on the vertebrate and invertebrate diversity in the Pampas of Argentina. Biodivers Conserv 20:3077–3100

    Google Scholar 

  • Meijer K, Schilthuizen M, Beukeboom L, Smit C (2016) A review and meta-analysis of the enemy release hypothesis in plant herbivorous insect systems. PeerJ 4:e2778. https://doi.org/10.7717/peerj.2778

    Article  PubMed  PubMed Central  Google Scholar 

  • Milchunas D (2006) Responses of plant communities to grazing in the southwestern United States. Gen. Tech. Rep. RMRS-GTR-169. U.S. Department of Agriculture, Forest Service, Rocky Mountain Res. Stat., Fort Collins, CO

  • Milchunas DG, Vandever MW (2014) Grazing effects on plant community succession of early- and mid-seral seeded grassland compared to shortgrass steppe. J Veg Sci 25:22–35

    Google Scholar 

  • Moore KJ, Moser LE, Vogel KP, Waller SS, Johnson BE, Pedersen JF (1991) Describing and quantifying growth stages of perennial forage grasses. Agron J 83:1073–1077

    Google Scholar 

  • Mueller-Dombois D, Ellenberg H (2003) Aims and methods of vegetation ecology. The Blackburn Press, Caldwell, NJ

    Google Scholar 

  • Nuñez MA, Hayward J, Horton TR, Amico GC, Dimarco RD, Barrios-Garcia N, Simberloff D (2013) Exotic mammals disperse exotic fungi that promote invasion by exotic trees. PLoS One 8(6):e66832. https://doi.org/10.1371/journal.pone.0066832

    Article  PubMed  PubMed Central  CAS  Google Scholar 

  • Osem Y, Perevolotsky A, Kigel J (2002) Grazing effect on diversity of annual plant communities in a semi-arid rangeland: interactions with small-scale spatial and temporal variation in primary productivity. J Ecol 90:936–946

    Google Scholar 

  • Osem Y, Lavi A, Rosenfeld A (2011) Colonization of Pinus halepensis in Mediterranean habitats: consequences of afforestation, grazing and fire. Biol Invasions 13:485–498. https://doi.org/10.1007/s10530-010-9843-3

    Article  Google Scholar 

  • Pawson SM, Mccarthy JK, Ledgard NJ, Didham RK (2010) Density-dependent impacts of exotic conifer invasion on grassland invertebrate assemblages. J Appl Ecol 47:1057–1062

    Google Scholar 

  • Perkins LB, Leger EA, Nowak RS (2011) Invasion triangle: an organizational framework for species invasion. Ecol Evol 1(4):610–625. https://doi.org/10.1002/ece3.47

    Article  PubMed  PubMed Central  Google Scholar 

  • Relva MA, Nuñez MA, Simberloff D (2010) Introduced deer reduce native plant cover and facilitate invasion of non-native tree species: evidence for invasional meltdown. Biol Invasions 12:303–311

    Google Scholar 

  • Ricci S (1992) Relaciones entre la vegetación y la actividad agropecuaria en el área de Sierra de la Ventana. Tesis de Doctorado. Facultad de Ciencias Naturales y Museo. Universidad Nacional de La Plata, La Plata, Argentina

    Google Scholar 

  • Sankaran M, Augustine DJ, Ratnam J (2013) Native ungulates of diverse body sizes collectively regulate long-term woody plant demography and structure of a semi-arid savannah. J Ecol 101:1389–1399

    Google Scholar 

  • Scorolli A (2007) Dinámica poblacional y organización social de caballos cimarrones en el Parque Provincial Ernesto Tornquist. Tesis de Doctorado en Biología. Universidad Nacional del Sur, Bahía Blanca, Argentina

    Google Scholar 

  • Seastedt TR, Pysek P (2011) Mechanisms of plant invasions of North American and European grasslands. Annu Rev Ecol Evol Syst 42:133–153

    Google Scholar 

  • Simberloff D, Nuñez MA, Ledgard NJ, Pauchard A, Richardson DM, Sarasola M, Van Wilgen B, Zalba SM, Zenni RD, Bustamente R, Peña E, Ziller SR (2010) Spread and impact of introduced conifers in South America: lessons from other southern hemisphere regions. Austral Ecol 35:489–504

    Google Scholar 

  • Skarpe C (1991) Impact of grazing in savanna ecosystems. Ambio 20(8):351–356

    Google Scholar 

  • Su R, Cheng J, Chen D, Bai Y, Jin H, Chao L, Li J (2017) Effects of grazing on spatiotemporal variations in community structure and ecosystem function on the grasslands of Inner Mongolia, China. Sci Rep 7(1):e0215223. https://doi.org/10.1038/s41598-017-00105-y

    Article  CAS  Google Scholar 

  • Unger PW, Kaspar T (1994) Soil compaction and root growth: a review. Agron J 86:759–766

    Google Scholar 

  • Van Auken OW (2000) Shrub invasions of North American semiarid grasslands. Annu Rev Ecol Syst 31:197–215

    Google Scholar 

  • Van Auken OW (2009) Causes and consequences of woody plant encroachment into western North American grasslands. J Environ Manag 90:2931–2942

    Google Scholar 

  • Van Uytvanck J, Decleer K, Hoffmann M (2008) Establishment patterns of woody species in low intensity-grazed pastures after the cessation of intensive agricultural use. For Ecol Manag 256:106–113

    Google Scholar 

  • Vavra M, Parks CG, Wisdom MJ (2007) Biodiversity, exotic plant species, and herbivory: the good, the bad, and the ungulate. For Ecol Manag 246:66–72

    Google Scholar 

  • Walker B (2002) Impacts of grazing on semiarid rangelands. Conserv Ecol 6(2):r5

    Google Scholar 

  • Zalba SM, Cuevas YA, Bóo RM (2008) Invasion of Pinus halepensis Mill. following a wildfire in an Argentine grassland nature reserve. J Environ Manag 88:549–556

    Google Scholar 

  • Zar JH (1999) Biostatistical Analysis, 4th edn. Prentice Hall, New Jersey

    Google Scholar 

  • Zhang Y, Huang D, Badgery WB, Kemp DR, Chen W, Wang X, Liu N (2015) Reduced grazing pressure delivers production and environmental benefits for the typical steppe of north China. Sci Rep 5:16434. https://doi.org/10.1038/srep16434

    Article  PubMed  PubMed Central  CAS  Google Scholar 

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Acknowledgements

This research was supported by the Comisión Nacional de Investigaciones Científicas y Técnicas (CONICET) and by the Secretaría General de Ciencia y Técnica (SGCyT) of the Universidad Nacional del Sur. We thank to the personal of Ernesto Tornquist Park and authorities of the Secretaría de Medio Ambiente de la Provincia de Buenos Aires for assistance during the study.

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  1. Grupo de Investigación en Ecosistemas de Pastizal (GIEP), CERZOS, CONICET, 8000, Bahía Blanca, Argentina

    Ana E. de Villalobos & Leonela Schwerdt

  2. Departamento de Biología Bioquímica y Farmacia, Universidad Nacional del Sur, 8000, Bahía Blanca, Argentina

    Ana E. de Villalobos

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de Villalobos, A.E., Schwerdt, L. Seasonality of feral horse grazing and invasion of Pinus halepensis in grasslands of the Austral Pampean Mountains (Argentina): management considerations. Biol Invasions 22, 2941–2955 (2020). https://doi.org/10.1007/s10530-020-02300-x

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