Abstract
Silvopastoral systems may overyield compared to monocultures as a result of higher resource capture and/or facilitation effects of the trees on the pastures. Festuca pallescens (St. Ives) Parodi, a forage species of Patagonia, is vulnerable to water deficit, suggesting that it may benefit from the facilitative effects of trees. Radiation (PPFD), temperature, relative humidity (RH) and soil water distribution during the growing season were measured under different tree cover levels in ponderosa pine-based silvopastoral systems. PPFD decreased with increasing tree cover, and the decrease was lower in the positions under than between tree crowns. No significant differences were observed for temperature, RH nor for soil water content between treatments. Pre-dawn water potential of grasses during the growing season showed similar high values in all treatments. However, cumulative water stress was slightly lower in high tree cover treatments than in open situations. Leaf water potential of the grasses during the day was always lower in open grassland than in forested plots. The growth of the grasses showed no significant differences between treatments, but mean growth tended to decrease in the more densely planted treatments. We concluded that F. pallescens is a species that is biologically sound for use in silvopastoral systems, because the balance between facilitation and competition can be positive under the semiarid conditions of Patagonia.
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References
A.J. Belsky (1994) ArticleTitleInfluences of trees on savannah productivity: tests of shadenutrients, and tree-grass competition Ecology 75 922–932
M.B. Bertiller G.E. Defosse (1990) ArticleTitleClipping effects upon primary productivity and senescence: study case on Festuca pallescens (St. Yves) Parodi in a Patagonian semiarid grasslandArgentina Acta Oecol. 11 79–92
D.D. Breshears J.W. Nyhan C.E. Heil B.P. Wilcox (1998) ArticleTitleEffects of woody plants in a semiarid woodland: soil temperature and evaporation in canopy and intercanopy patches Int. J. Plant Sci. 159 1010–1017 Occurrence Handle10.1086/297622
D.D. Breshears P.M. Rich F.J. Barnes K. Campbell (1997) ArticleTitleOverstorey-imposed heterogeneity in solar radiation and soil moisture in a semiarid woodland Ecol. Appl. 7 1201–1215
R.M. Callaway L.R. Walker (1997) ArticleTitleCompetition and facilitation: a synthetic approach to interactions in plant communities Ecology 78 1958–1965
G.E. Defossé M.B. Bertiller J.O. Ares (1990) ArticleTitleAbove-ground phytomass dynamics in a grassland steppe of PatagoniaArgentina J. Range Manage. 43 157–160
M.E. Fernández J.E. Gyenge G. Dalla Salda T.M. Schlichter (2002) ArticleTitleSilvopastoral systems in Northwestern Patagonia I: growth and photosynthesis of Stipa speciosa under different levels of Pinus ponderosa cover Agrofor. Syst. 55 27–35 Occurrence Handle10.1023/A:1020238330817
M.E. Fernández J.E. Gyenge T.M. Schlichter (2004) ArticleTitleShade acclimation in the forage grass Festuca pallescens: biomass allocation and foliage orientation Agrofor. Syst. 60 159–166
Fernández M.E., Gyenge J.E. and Schlichter T.M. Parameterization of models of stomatal conductance and leaf photosynthesis of the forage grass Festuca pallescens. Agrofor. Syst. in revision.
J.E. Gyenge M.E. Fernández G. Dalla Salda T.M. Schlichter (2002) ArticleTitleSilvopastoral systems in Northwestern Patagonia II: water balance and water potential in a stand of Pinus ponderosa and native grassland Agrofor. Syst. 55 47–55 Occurrence Handle10.1023/A:1020269432671
M. Holmgren M. Scheffer M.A. Huston (1997) ArticleTitleThe interplay of facilitation and competition in plant communities Ecology 78 1966–1975
W. Huang Q. Xu (1999) ArticleTitleOveryield of Taxodium ascendens-intercrop systems For. Ecol. Manage. 116 33–38 Occurrence Handle10.1016/S0378-1127(98)00440-X
R. Joffre S. Rambal (1988) ArticleTitleSoil water improvement by trees in the rangelands of southern Spain Acta Oecologica Oecol. Plant. 9 405–422
J.D. Kellas P.R. Bird K.N. Cumming G.A. Kearney A.K. Ashton (1995) ArticleTitlePasture production under a series of Pinus radiata-pasture agroforestry systems in South-west VictoriaAustralia Aust. J. Agric. Res. 46 1285–1297 Occurrence Handle10.1071/AR9951285
R. Kho (2000) ArticleTitleA general tree-environment-crop interaction equation for predictive understanding of agroforestry systems Agric. Ecosyst. Environ. 80 87–100
T. Kuuluvainen T. Pukkala (1987) ArticleTitleEffect of crown shape and tree distribution on the spatial distribution of shade Agric. For. Meteorol. 40 215–231 Occurrence Handle10.1016/0168-1923(87)90060-8
J.E. Mitchell P.N.S. Bartling (1991) ArticleTitleComparison of linear and non-linear overstorey-understorey models for ponderosa pine For. Ecol. Manage. 42 195–204 Occurrence Handle10.1016/0378-1127(91)90024-P
J.L. Monteith M. Unsworth (1990) Principles of Environmental Physics EditionNumber2 Arnold London, UK 291
M.M. Moore D.A. Deiter (1992) ArticleTitleStand density index as a predictor of forage production in northern Arizona pine forests J. Range Manage. 45 267–271
B.J. Myers (1988) ArticleTitleWater stress integral – a link between short-term stress and long-term growth Tree Physiol. 4 315–323 Occurrence Handle14972802
E.G. Nicora (1978) Flora patagónica. Parte III: Gramíneas. Colección Científica del INTA Buenos Aires Argentina 563
C.K. Ong C.R. Black J.S. Wallace A.A.H. Khan J.E. Lott N.A. Jackson S.B. Howard D.M. Smith (2000) ArticleTitleProductivity, microclimate and water use in Grevillea robusta-based agroforestry systems on hillslopes in semi-arid Kenya Agric. Ecosyst. Environ. 80 121–141
F.I. Pugnaire P. Haase L.D. Incoll S.C. Clark (1996) ArticleTitleResponse of the tussock grass Stipa tenacissima to watering in a semi-arid environment Funct. Ecol. 10 265–274
E.-D. Schultze H.A. Mooney O.E. Sala E. Jobbagi N. Buchmann G. Bauer J. Canadell R.B. Jackson L. Loreti M. Oesterheld J.R. Elheringer (1996) ArticleTitleRooting deep, water availability, and vegetation cover along an aridity gradient in Patagonia Oecologia 108 503–511
J.H. Zar (1996) Biostatiscal Analysis Prentice-Hall Inc. Upper Saddle RiverUSA 662
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Fernández, M.E., Gyenge, J.E. & Schlichter, T.M. Growth of Festuca pallescens in Silvopastoral Systems in Patagonia, Part 1: Positive Balance between Competition and Facilitation. Agroforest Syst 66, 259–269 (2006). https://doi.org/10.1007/s10457-005-0590-x
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DOI: https://doi.org/10.1007/s10457-005-0590-x