Abstract
Natural regeneration in Pinus pinea stands commonly fails throughout the Spanish Northern Plateau under current intensive regeneration treatments. As a result, extensive direct seeding is commonly conducted to guarantee regeneration occurrence. In a period of rationalization of the resources devoted to forest management, this kind of techniques may become unaffordable. Given that the climatic and stand factors driving germination remain unknown, tools are required to understand the process and temper the use of direct seeding. In this study, the spatio-temporal pattern of germination of P. pinea was modelled with those purposes. The resulting findings will allow us to (1) determine the main ecological variables involved in germination in the species and (2) infer adequate silvicultural alternatives. The modelling approach focuses on covariates which are readily available to forest managers. A two-step nonlinear mixed model was fitted to predict germination occurrence and abundance in P. pinea under varying climatic, environmental and stand conditions, based on a germination data set covering a 5-year period. The results obtained reveal that the process is primarily driven by climate variables. Favourable conditions for germination commonly occur in fall although the optimum window is often narrow and may not occur at all in some years. At spatial level, it would appear that germination is facilitated by high stand densities, suggesting that current felling intensity should be reduced. In accordance with other studies on P. pinea dispersal, it seems that denser stands during the regeneration period will reduce the present dependence on direct seeding.
Similar content being viewed by others
References
Awada T, Radoglou K, Fotelli MN, Constantinidou HIA (2003) Ecophysiology of seedlings of three Mediterranean pine species in contrasting light regimes. Tree Physiol 23(1):33–41
Baeza MJ, Roy J (2008) Germination of an obligate seeder (Ulex parviflorus) and consequences for wildfire management. For Ecol Manag 256:685–693
Barbeito I, Pardos M, Calama R, Cañellas I (2008) Effect of stand structure on Stone pine (Pinus pinea L.) regeneration dynamics. Forestry 81(5):617–629. doi:10.1093/forestry/cpn037
Bewley JD, Black M (1994) Seeds: physiology of development and germination, 2nd edn. Plenum press, New York
Bradford KJ (1990) A water relations analysis of seed germination rates. Plant Physiol 94:840–849
Calama R, Cañadas N, Montero G (2003) Inter-regional variability in site index models for even-aged stands of stone pine (Pinus pinea L.) in Spain. Ann For Sci 60:259–269
Calama R, Montero G (2007) Cone and seed production from stone pine (Pinus pinea L.) stands in Central Range (Spain). Eur J For Res 126(1):23–35. doi:10.1007/s10342-005-0100-8
Calama R, Mutke S, Tomé J, Gordo J, 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(3):606–618. doi:10.1016/j.ecolmodel.2010.09.020
Calama R, Madrigal G, Manso R, Garriga E, Gordo FJ, Pardos M (2012) Germinación, emergencia y supervivencia de regenerado en Pinus pinea L. In: Gordo J, Calama R, Pardos M, Bravo F, Montero G (eds) La regeneración natural de los pinares en los arenales de la Meseta Castellana. Instituto Universitario de Investigación en Gestión Forestal Sostenible (Universidad de Valladolid-INIA), Valladolid
Castro J, Zamora R, Hódar A, Gómez J (2005) Ecology of seed germination of Pinus sylvestris L. at its southern, Mediterranean distribution range. Investigación Agraria: Sistemas y Recursos Forestales 14(2):143–152
Chambers J, Vander Wall S, Schupp E (1999) Seed and seedling ecology of piñon and juniper species in the Pygmy woodlands of Western North America. Bot Rev 65(1):1–38
Cochard R, Jackes BR (2005) Seed ecology of invasive tropical tree Parkinsonia aculeata. Plant Ecol 180:13–31
Cook A, Turner SR, Baskin JM, Baskin CC, Steadman KJ, Dixon KW (2008) Occurrence of physical dormancy in seeds of Australian sapindaceae: a survey of 14 species in nine genera. Ann Bot 101:1349–1362
Cooke J, Cooke B, Gifford D (2002) Loblolly pine seed dormancy: constraints to germination. New For 23:239–256
De Castro M, Martín-Vide J, Alonso S (2005) The climate of Spain: past, present and scenarios for the 21st century. In: A preliminary assessment of the impacts in Spain due to the effects of climate change. ECCE Project-Final report. Ministerio de Medio Ambiente, Madrid
De Luis M, Raventós J, Wiegand T, González-Hidalgo JC (2008) Temporal and spatial differentiation in seedling emergence may promote species coexistence in Mediterranean fire-prone ecosystems. Ecography 31:620–629
Flores O, Gourlet-Fleury S, Picard N (2006) Local disturbance, forest structure and dispersal effects on sapling distribution of light-demanding and shade-tolerant species in a French Guianian forest. Acta Oecologica 29:141–154
Fortin M, DeBlois J (2007) Modelling tree recruitment with zero-inflated models: the example of hardwood stands in Southern Québec. For Sci 53(4):529–539
Gordo FJ (2002) Cuarta Revisión de la Ordenación de los Montes Navales, Molinillo y La Reguera y La Vega y Zapardiel del término municipal de Tordesillas. Servicio Territorial de Medio Ambiente de Valladolid, Junta de Castilla y León, Valladolid
Gordo FJ, Rojo LI, Calama R, Mutke S, Martín R, García M (2012) Selvicultura de regeneración natural de Pinus pinea L. en montes públicos de la provincia de Valladolid. In: Gordo J, Calama R, Pardos M, Bravo F, Montero G (eds) La regeneración natural de los pinares en los arenales de la Meseta Castellana. Instituto Universitario de Investigación en Gestión Forestal Sostenible (Universidad de Valladolid-INIA), Valladolid, p 254
Hardegree SP, Flerchinger GN, Van Vactor SS (2003) Hydrothermal germination response and the development of probabilistic germination profiles. Ecol Model 167:305–322
Honda Y, Katoh K (2007) Strict requirement of fluctuating temperatures as a reliable gap signal in Picris hieracioides var. japonica seed germination. Plant Ecol 193:147–156
Kamkar B, Al-Alahmadi MJ, Mahdavi-Damghani A, Villalobos FJ (2012) Quantification of the cardinal temperatures and thermal time requirement of opium poppy (Papaver somniferum L.) seeds to germinate using non-linear regression models. Ind Crops Prod 35(1):192–198. doi:10.1016/j.indcrop.2011.06.033
Keyes CR, Maguire DA, Tappeiner JC (2009) Recruitment of ponderosa pine seedlings in the Cascade Range. For Ecol Manag 257:495–501
Krakowski J, El-Kassaby YA (2005) Lodgepole pine and white spruce germination: effects of stratification and simulated aging. Silvae Genetica 54(3):138–144
Kuuluvainen T, Pukkala T (1989) Simulation of within-tree and between-tree shading of direct-radiation in a forest canopy: effect of crown shape and sun elevation. Ecol Model 49(1–2):89–100. doi:10.1016/0304-3800(89)90045-8
Lippai A, Smith PA, Price JW, Lloyd CJ (1996) Effects of temperature and water potential on germination of horehound (Marrubium vulgare) seeds from two Australian localities. Weed Sci 44:91–99
Lucas-Borja M, Fonseca T, Parresol B, Silva-Santos P, García-Morote F, Tíscar-Oliver P (2011) Modelling Spanish black pine seedling emergence: Establishing management strategies for endangered forest areas. For Ecol Manag (in press)
Madrigal G, Pardos M, Garriga E, Montero G, Manso R, Calama R (2011) Sitios se ensayo INIA de regeneración natural en Pinus pinea. In: Gordo J, Calama R, Pardos M, Bravo F, Montero G (eds) La regeneración natural de Pinus pinea L. y Pinus pinaster Ait. en los arenales de la Meseta Castellana. Actas de las I Jornadas de Transferencia Tecnológica y Científica (in press)
Magini E (1955) Sulle condizioni di germinazione del pino d’Aleppo e del pino domestico. Italia Forestale e Montana Anno 40:106–124
Manso R, Pardos M, Garriga E, De Blas S, Madrigal G, Calama R (2010) Modelling the spatial-temporal pattern of post-dispersal seed predation in stone pine (Pinus pinea L.) stands in the Northern Plateau (Spain). Paper presented at the Frugivores and Seed Dispersal: Mechanisms and Consequences of a Key Interaction for Biodiversity, Montpellier (France), 13th–18th June 2010
Manso R, Pardos M, Keyes CR, Calama R (2012) Modelling the spatio-temporal pattern of primary dispersal in stone pine (Pinus pinea L.) stands in the Northern Plateau (Spain). Ecol Model 226:11–21
Meyer SE, Pendleton BK (2005) Factors affecting seed germination and seedling establishment of a long-lived desert shrub (Coleogyne ramosissima: Rosaceae). Plant Ecol 178:171–187
Müller C (2000) Modelling soil-biosphere interactions. CABI, New York
Nomiya H (2010) Differentiation of seed germination traits in relation to the natural habitats of three Ulmus species in Japan. J For Res 15:123–130
Ooi MKJ (2010) Delayed emergence and post-fire recruitment success: effects of seasonal germination, fire season and dormancy type. Aust J Bot 58:248–256
Ordóñez JL, Franco S, Retana J (2004) Limitation of the recruitment of Pinus nigra in a gradient of post-fire environmental conditions. Ecoscience 11:296–304
Pardos M, Puertolas J, Madrigal G, Garriga E, de Blas S, Calama R (2010) Seasonal changes in the physiological activity of regeneration under a natural light gradient in a Pinus pinea regular stand. For Syst 19(3):367–380
Pinheiro J, Bates D, DebRoy S, Sarkar D, R CT (2009) nlme: Linear and nonlinear mixed effects models. R package version 3.1-96
Prada MA, Gordo J, De Miguel J, Mutke S, Catalán G, Iglesias S, Gil L (1997) Las regiones de procedencia de Pinus pinea L. en España. Ministerio de Medio Ambiente, Madrid
Puerta-Piñero C, Gómez JM, Zamora R (2006) Species-specific effects on topsoil development affect Quercus ilex seedling performance. Acta Oecologica 29:65–71
R DCT (2009) R: A language and environment for statistical computing. R Foundation for Statistical Computing, Vienna
Roman ES, Murphy SD, Swanton CJ (2000) Simulation of Chenopodium album seedling emergence. Weed Sci 48(2):217–224. doi:10.1614/0043-1745(2000)048[0217:socase]2.0.co;2
Ruano I, Pando V, Bravo F (2009) How do light and water influence Pinus pinaster Ait. germination and early seedling development? For Ecol Manag 258:2647–2653
Seiwa K, Ando M, Imaji A, Tomita M, Kanou K (2009) Spatio-temporal variation of environmental signals inducing seed germination in temperate conifer plantations and natural hardwood forests in northern Japan. For Ecol Manag 257:361–369
Silveira FAO, Negreiros D, Fernandes W (2004) Influência da luz e da temperatura na germinação de sementes de Marcetia taxifolia (A. St.-Hil.) DC. (Melastomataceae). Acta Botanica Brasilica 18(4):847–851
Silvertown J (1980) Leaf-canopy-induced seed dormancy in a grassland flora. New Phytol 85:109–118
Skordilis A, Thanos CA (1995) Seed stratification and germination strategy in the Mediterranean pines Pinus brutia and Pinus halepensis. Seed Sci Res 5:151–160
Snowdon P (1991) A ratio estimator for bias correction in logarithmic regressions. Can J For Res 21(5):720–724. doi:10.1139/x91-101
Thornley JHM (1986) A germination model: responses to time and temperature. J Theor Biol 123(4):481–492. doi:10.1016/s0022-5193(86)80215-6
Westoby M, Jurado E, Leishman M (1992) Comparative evolutionary ecology of seed size. Trends Ecol Evol 7(11):368–372
Woollons RC (1998) Even-aged stand mortality estimation through a two-step regression process. For Ecol Manag 105(1–3):189–195. doi:10.1016/s0378-1127(97)00279-x
Wu HI, Sharpe PJH, Walker J, Penridge LK (1985) Ecological field-theory: a spatial-analysis of resource interference among plants. Ecol Model 29(1–4):215–243. doi:10.1016/0304-3800(85)90054-7
Zuur A, Ieno E, Walker N, Saveliev A, Smith G (2009) Mixed effects models and extensions in ecology with R Statistics for Biology and Health. Springer, New York
Acknowledgments
First of all, we would like to express our most sincere gratitude to Mathieu Fortin for his valuable advice and suggestions, which notably improved the scope of this study. We are also grateful to the Forest Service of the Junta de Castilla y León and in particular to Ayuntamiento de El Portillo for permission to carry out the field experiment. Finally, we wish to thank Santiago de Blas and Enrique Garriga for their help in the data collection and Eduardo López and Salvador Sastre for conducting the soil analysis. This research was supported by projects AGL 2010-15521 and RTA2007-00044.
Author information
Authors and Affiliations
Corresponding author
Additional information
Communicated by M. Meincken.
Rights and permissions
About this article
Cite this article
Manso, R., Calama, R., Madrigal, G. et al. A silviculture-oriented spatio-temporal model for germination in Pinus pinea L. in the Spanish Northern Plateau based on a direct seeding experiment. Eur J Forest Res 132, 969–982 (2013). https://doi.org/10.1007/s10342-013-0724-z
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10342-013-0724-z