Climate-influenced ponderosa pine (Pinus ponderosa) seed masting trends in western Montana, USA

  • Christopher R Keyes Department of Forest Management, University of Montana, Missoula.
  • Rubén Manso González INRA-AgroParisTech, UMR 1092. Laboratoire d’Etude des Ressources Forêt-Bois (LERFoB). Champenoux.

Abstract

Aim of study: The aim of this study was to analyze 10-year records of ponderosa pine (Pinus ponderosa) seed production, in order to confirm synchronic seed production and to evaluate cyclical masting trends, masting depletion effect, and climate-masting relationships.

Area of study: The study area was located in a P. ponderosa stand in the northern Rocky Mountains (western Montana, USA).

Material and methods: The study was conducted in one stand that had been subjected to a silvicultural study of uneven-aged management techniques that was carried out in 1984, and which resulted in three separate units consisting of one control, one cut/no-burn treatment, and one cut/burn treatment. Seeds were collected during the 10 years following treatment in 15 traps systematically deployed within each of the stand’s three units. The total numbers of seeds collected in each unit were plotted over time to analyze crop synchrony, with Spearman rank correlation coefficient used to test for masting cycles and crop depletion after a mast year. Meteorological records over the period 1983-1994 were related to the occurrence of a mast event (defined as crops exceeding 50,000 viable seeds/ha).

Main results: The seed production pattern was non-cyclical, synchronous, and independent of silvicultural treatment history. A mast-depletion effect was evident but was not statistically significant. Mast events seem to be promoted by the occurrence of optimum mean temperatures at the beginning of spring during both the first (11 °C) and second (9 °C) years of cone maturation. The probability of a mast year was also affected by summer temperature (number of late frost days; negative effect) and precipitation amount (positive effect). All these factors would seemingly explain the observed synchronous pattern in cone production.

Research highlights: The non-cyclical trend of ponderosa pine seed mast years is influenced by specific climate determinants. Fluctuations in mean early spring temperatures, late frost and water availability are likely to affect P. ponderosa seed production, with implications for natural regeneration in this region.

Key words: natural regeneration; seed periodicity; reproduction; uneven-aged management; Rocky Mountains.

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Author Biographies

Christopher R Keyes, Department of Forest Management, University of Montana, Missoula.

Research Professor of Silviculture, Department of Forest Management

Rubén Manso González, INRA-AgroParisTech, UMR 1092. Laboratoire d’Etude des Ressources Forêt-Bois (LERFoB). Champenoux.
Post-Doctoral Researcher, Laboratoire d’Etude des Ressources Forêt-Bois

References

References

Arno SF, Fiedler CE, 2006. Ponderosa pine and interior forests. In: Restoring the Pacific Northwest: The Art and Science of Ecological Restoration in Cascadia (Apostol D, Sinclair M, eds). Island Press, Washington, DC. pp: 194-215.

Agee JK, 1996. Fire Ecology of Pacific Northwest Forests, 2nd ed. Island Press, Washington DC. 505 pp.

Calama R, Mutke S, Tomé JA, Gordo FJ, Montero G, Tomé M, 2011. Modelling spatial and temporal variability in a zero-inflated variable: The case of stone pine (Pinus pinea L.) cone production. Ecol Model 222: 606-618. http://dx.doi.org/10.1016/j.ecolmodel.2010.09.020

Curtis JD, Foiles MW, 1961. Ponderosa pine seed dissemination into group clearcuttings. J Forest 59: 766-767.

Dahms WG, Barrett JW, 1975. Seed production of central Oregon ponderosa and lodgepole pines. USDA For Serv Res Pap PNW-RP-191.

Daubenmire R, 1960. A seven-year study of cone production as related to xylem layers and temperature in Pinus ponderosa. Am Midl Nat 64(1): 187-193. http://dx.doi.org/10.2307/2422901

Fiedler CE, 2000. Restoration treatments promote growth and reduce mortality of old-growth ponderosa pine (Montana). Ecol Restoration 18: 117-118.

Fowells HA, Schubert GH, 1956. Seed crops of forest trees in the pine region of California. USDA Tech Bull 1150.

Graham RT, McCaffrey S, Jain TB, 2004. Science basis for changing forest structure to modify wildfire behavior and severity. USDA For Serv Gen Tech Rep RMRS-GTR-120.

Greene DF, Johnson EA, 2004. Modelling the temporal variation in the seed production of North American trees. Can J Forest Res 34: 65–75 http://dx.doi.org/10.1139/x03-188

Jain TB, Battaglia MA, Han H-S, Graham RT, Keyes CR, Fried JS, Sandquist JE, 2012. A comprehensive guide to fuel management practices for dry mixed conifer forests in the northwestern United States. USDA For Serv Gen Tech Rep RMRS-GTR-292.

Keyes CR, Maguire DA, 2007. Seed rain of ponderosa pine beneath partial overstories. New Forest 34: 107-114. http://dx.doi.org/10.1007/s11056-007-9040-0

Keyes CR, Maguire DA, Tappeiner JC, 2007. Observed dynamics of ponderosa pine (Pinus ponderosa var. ponderosa Dougl. ex Laws.) seedling recruitment in the Cascade Range, USA. New Forest 34: 95-105. http://dx.doi.org/10.1007/s11056-007-9041-z

Krannitz PG, Duralia TE, 2004. Cone and seed production in Pinus ponderosa: A review. West N Am Naturalist 64(2): 208-218.

Larson MM, Schubert GH, 1970. Cone crops of ponderosa pine in central Arizona including the influence of Albert squirrels. USDA For Serv Res Pap RM-RP-58.

Legendre P, 2005. Species associations: The Kendall coefficient of concordance revisited. J Agr Biol Envir St 10(2): 226-245. http://dx.doi.org/10.1198/108571105X46642

McDonald PM, 1992. Estimating seed crops of conifer and hardwood species. Can J Forest Res 22: 832-838. http://dx.doi.org/10.1139/x92-112

McIver J, Erickson K, Youngblood A, 2012. Principal short-term findings of the National Fire and Fire Surrogate study. USDA For Serv Gen Tech Rep PNW-GTR-860.

Mooney KA, Linhart YB, Snyder MA, 2011. Masting in ponderosa pine: Comparisons of pollen and seed over space and time. Oecologia 165: 651-661. http://dx.doi.org/10.1007/s00442-010-1742-x

Peters G, Sala A, 2008. Reproductive output of ponderosa pine in response to thinning and prescribed burning in western Montana. Can J Forest Res 38: 844-850. http://dx.doi.org/10.1139/X07-203

Piovesan G, Adams JM, 2001. Masting behaviour in beech: Linking reproduction and climatic variation. Can J Bot 79: 1039-1047. http://dx.doi.org/10.1139/b01-089

R Core Team, 2013. R: A Language and Environment for Statistical Computing. R Foundation for Statistical Computing, Vienna, Austria. Available in http://www.r-project.org. [23 January 2015].

Roeser Jr. J, 1941. Some aspects of flower and cone production of ponderosa pine. J Forest 39: 534-536.

Sala A, Peters GD, McIntyre LR, Harrington MG, 2005. Physiological responses of ponderosa pine in western Montana to thinning, prescribed fire and burning season. Tree Physiol 24: 339-348. http://dx.doi.org/10.1093/treephys/25.3.339

Sala A, Hopping K, McIntire EJB, Delzon S, Crone EE, 2012. Masting in whitebark pine (Pinus albicaulis) depletes stored nutrients. New Phytol 196: 189-199. http://dx.doi.org/10.1111/j.1469-8137.2012.04257.x

Shearer RC, Schmidt WC, 1970. Natural regeneration in ponderosa pine forests of western Montana. USDA For Serv Res Pap INT-RP-86.

Shepperd WD, Edminster CB, Mata SA, 2006. Long-term seedfall, establishment, survival, and growth of natural and planted ponderosa pine in the Colorado Front Range. West J Appl For 21(1): 19-26.

Sork VL, Bramble J, Sexton O, 1993. Ecology of mast-fruiting in three species of Missouri oaks. Ecology 74: 528-541. http://dx.doi.org/10.2307/1939313

Sundahl WE, 1971. Seedfall from young-growth ponderosa pine. J Forest 69: 790-792.

Published
2015-06-12
How to Cite
Keyes, C. R., & Manso González, R. (2015). Climate-influenced ponderosa pine (Pinus ponderosa) seed masting trends in western Montana, USA. Forest Systems, 24(1), e021. https://doi.org/10.5424/fs/2015241-05606
Section
Short communications