气候变化领域集成服务门户(CCPortal): Competition modulates the response of growth to climate in pure and mixed Abies pinsapo subsp. Maroccana forests in northern Morocco

CCPortal

DOI	10.1016/j.foreco.2019.117847
	Competition modulates the response of growth to climate in pure and mixed Abies pinsapo subsp. Maroccana forests in northern Morocco
	Navarro-Cerrillo R.M.; Manzanedo R.D.; Rodriguez-Vallejo C.; Gazol A.; Palacios-Rodríguez G.; Camarero J.J.
发表日期	2020
ISSN	0378-1127
卷号	459
英文摘要	The effects of changes in structure and composition on the dynamics and responses of secondary forests to climate change are understudied. Secondary forests of Abies pinsapo var. maroccana are often a mosaic of patches of various development stages showing different stand structures and successional stages. We hypothesise that the structure, species composition and tree-to-tree competition of A. pinsapo stands in Talassemtane National Park (Riff in northern Morocco) modulate the potential response of these secondary forests to climate change. Nine plots representing three species mixtures were established in A. pinsapo-dominated forests, and dendrometric and dendroecological surveys were conducted. The two-parameter Weibull function was used to investigate the diameter distributions of Abies pinsapo, Pinus nigra subsp. mauritanica. Cedrus atlantica, Acer opalus, Juniperus oxycedrus and Quercus ilex for each site along the compositional gradient. We quantified changes in radial growth, response to climate and drought, and components of growth resilience. Finally, the influence of neighbourhood competition on individual tree growth was evaluated using the a competition index. Diameter distributions had an exponential, reverse-J character for A. pinsapo in pure and C. atlantica mixed stands. By contrast, A. pinsapo presented a positively-skewed diameter distribution dominated by small-sized trees in P. nigra mixed stands. There was a significant correlation between tree growth and climate on all forest types, with differing magnitudes per species. Significant precipitation-growth correlations were found for the previous autumn and winter (October, December) in A. pinsapo. Drought events reduced A. pinsapo's resistance to subsequent droughts when growing in pure and mixed stands with C. atlantica. This decline was statistically significant by the end of the studied period (1999–2005). In contrast, mixed forests showed the highest recovery after drought. Successive drought events consistently reduced A. pinsapo‘s resilience to drought, regardless of species composition. In pure A. pinsapo and in A. pinsapo-C. atlantica mixed forests, competition reduced A. pinsapo's growth, while in A. pinsapo-P. nigra mixed forests increased competition with P. nigra seemed to have a positive-to-neutral effect on A. pinsapo growth. Here, we showed that the response to climate and resilience of A. pinsapo forests could be severely influenced by structure, species composition, and competition, potentially influencing our expectations of long-term persistence of old-growth coniferous trees in the Riff mountains. Understanding forest resilience and response to changing climate has important implications towards managing and safeguarding the productivity and health of these old growth forests. © 2019 Elsevier B.V.
关键词	Candida Drought Reforestation Structure (composition)Weibull distribution Abies maroccana Neighbourhood Radial growth Regeneration Spatial patterns Stand structures Succession Climate change climate change climate effect coniferous tree drought stress growth response interspecific competition neighborhood old-growth forest regeneration regrowth secondary forest spatial analysis stand structure succession Competition Drought Forests Growth Reforestation Resilience Statistical Distribution Trees Morocco Abies Abies pinsapo Acer opalus Cedrus atlantica Coniferales Juniperus oxycedrus Pinus nigra Quercus ilex
语种	英语
来源机构	Forest Ecology and Management
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/133049
推荐引用方式 GB/T 7714	Navarro-Cerrillo R.M.,Manzanedo R.D.,Rodriguez-Vallejo C.,et al. Competition modulates the response of growth to climate in pure and mixed Abies pinsapo subsp. Maroccana forests in northern Morocco[J]. Forest Ecology and Management,2020,459.
APA	Navarro-Cerrillo R.M.,Manzanedo R.D.,Rodriguez-Vallejo C.,Gazol A.,Palacios-Rodríguez G.,&Camarero J.J..(2020).Competition modulates the response of growth to climate in pure and mixed Abies pinsapo subsp. Maroccana forests in northern Morocco.,459.
MLA	Navarro-Cerrillo R.M.,et al."Competition modulates the response of growth to climate in pure and mixed Abies pinsapo subsp. Maroccana forests in northern Morocco".459(2020).