Testing Aleppo pine seed sources response to climate change by using trial sites reflecting future conditions

Abstract

Campo García, ADD.; Mulet Salort, JM.; Flors, J.; Aguado, A. (2014). Testing Aleppo pine seed sources response to climate change by using trial sites reflecting future conditions. New Forests. 45 (5) reforestation areas. We hypothesize that current marginal habitat due to low temperature is 25 shifting toward conditions found on the core habitat and that current core habitat will shift 26 toward warmer and drier marginal habitat. Our study reproduced real conditions of reforestation 27 in potential future climatic conditions. Results suggest that it is difficult to predict Aleppo pine Keywords 37Pinus halepensis, plantation performance, core and marginal habitats, growth, survival, assisted 38 population migration.

Growth of Stone pine (Pinus pinea L.) European provenances in central Chile

“…The fact that seed sources from low latitudes had the best performance under dry conditions was expected, since the native range of stone pine exhibits a clinal increase of aridity towards the south, indicating that southern seed sources would perform better in drier and warmer sites, as already observed in other species (Taïbi et al 2014).…”

The effect of genotype by environment interaction, phenotypic plasticity and adaptation on Pinus halepensis reforestation establishment under expected climate drifts

“…This is known to occur also in other pine species, e.g. P. sylvestris and P. taeda (Cregg and Zhang, 2001) and P. halepensis (Taïbi et al, 2014).…”

“…Moreover, many tree species reach their southern distribution limit in the Mediterranean basin where drought constrains their ecosystem structure and function (Herrero et al, 2013). In forestry in particular, adaptive silviculture (reforestation and human-assisted population migration) is proposed to counteract long generation cycles and modest dispersal abilities of forest trees through selection of tolerant genotypes and ecotypes to expected abiotic stresses in forest restoration programs (Williams and Dumroese, 2013;Taïbi et al, 2014). However, there is an important knowledge gap for the development of operational programs in adaptive silviculture as highlighted by international organizations (EFI, 2009;FAO, 2013).…”

“…This genetic diversity has to be considered in reforestation programs in the new context of climate change as genetic material based on local seed sources may become ineffective in the near future (Aitken et al, 2008;Breed et al, 2013;Williams and Dumroese, 2013). Provenance trials could reveal disparate performance of provenances from various geographical and climatic origins (Varelides et al, 2001;Seho et al, 2010) regarding plantation survival and early growth performance, phenotypic plasticity, adaptation and genotype by environment interaction (Taïbi et al, 2014). These traits should be considered for managing reproductive materials, as both their magnitude and their pattern have deep implications for breeding, screening, and seed deployment, particularly when using a broad range of genotypes and environments (Potter and Hargrove, 2012).…”

“…The specific goals of this work were (1) to evaluate inter and intra-site seed sources variation in their survival, early growth and phenotypic plasticity as well as (2) to elucidate the pattern of adaptation (for survival and early growth) by using the joint regression (Finlay and Wilkinson, 1963) and AMMI (Additive Main effect and Multiplication Interaction model, Gauch, 1992) models, taking into account both the transplant shock (one year after planting) and the final establishment of seedlings (three years of out-planting). A similar strategy was previously tested on Pinus halepensis with successful results (Taïbi et al, 2014).…”