Life strategies in intra-annual dynamics of wood formation: example of three conifer species in a temperate forest in north-east France

被引:152
作者
Cuny, Henri E. [1 ]
Rathgeber, Cyrille B. K. [1 ]
Lebourgeois, Francois [2 ]
Fortin, Mathieu [1 ]
Fournier, Meriem [2 ]
机构
[1] INRA, UMR1092, Lab Etud Ressources Foret Bois LERFoB, Ctr INRA Nancy, F-54280 Champenoux, France
[2] ENGREF, Lab Etud Ressources Foret Bois LERFoB, AgroParisTech, UMR1092, F-54000 Nancy, France
关键词
cambial activity; competition; functional trait; mixed stand; phenology; tree growth; wood formation; CAMBIAL ACTIVITY; SHADE-TOLERANCE; SILVER-FIR; FUNCTIONAL TRAITS; DEMOGRAPHIC RATES; XYLEM PHENOLOGY; RING FORMATION; ABIES-ALBA; SCOTS PINE; GROWTH;
D O I
10.1093/treephys/tps039
中图分类号
S7 [林业];
学科分类号
0829 ; 0907 ;
摘要
We investigated whether timing and rate of growth are related to the life strategies and fitness of three conifer species. Intra-annual dynamics of wood formation, shoot elongation and needle phenology were monitored over 3 years in five Norway spruces (Picea abies (L.) Karst.), five Scots pines (Pinus sylvestris L.) and five silver firs (Abies alba Mill.) grown intermixed. For the three species, the growing season (delimited by cambial activity onset and cessation) lasted about 4 months, while the whole process of wood formation lasted 5-6 months. Needle unfolding and shoot elongation followed the onset of cambial activity and lasted only one-third of the season. Pines exhibited an 'extensive strategy' of cambial activity, with long durations but low growth rates, while firs and spruces adopted an 'intensive strategy' with shorter durations but higher growth rates. We estimated that about 75% of the annual radial increment variability was attributable to the rate of cell production, and only 25% to its duration. Cambial activity rates culminated at the same time for the three species, whereas shoot elongation reached its maximal rate earlier in pines. Results show that species-specific life strategies are recognizable through functional traits of intra-annual growth dynamics. The opposition between Scots pine extensive strategy and silver fir and Norway spruce intensive strategy supports the theory that pioneer species are greater resource expenders and develop riskier life strategies to capture resources, while shade-tolerant species utilize resources more efficiently and develop safer life strategies. Despite different strategies, synchronicity of the maximal rates of cambial activity suggests a strong functional convergence between co-existing conifer species, resulting in head-on competition for resources.
引用
收藏
页码:612 / 625
页数:14
相关论文
共 57 条
[1]   Waking the sleeping giant: The evolutionary foundations of plant function [J].
Ackerly, DD ;
Monson, RK .
INTERNATIONAL JOURNAL OF PLANT SCIENCES, 2003, 164 (03) :S1-S6
[2]   Light gains and physiological capacity of understorey woody plants during phenological avoidance of canopy shade [J].
Augspurger, CK ;
Cheeseman, JM ;
Salk, CF .
FUNCTIONAL ECOLOGY, 2005, 19 (04) :537-546
[3]   Performance trade-offs among tropical tree seedlings in contrasting microhabitats [J].
Baraloto, C ;
Goldberg, DE ;
Bonal, D .
ECOLOGY, 2005, 86 (09) :2461-2472
[4]  
Bates D., 2011, R PACKAGE VERSION 09
[5]  
Becker M., 1995, FOREST DECLINE ATMOS, P120
[6]   Comparative dendroclimatic study of Scots pine, Norway spruce, and silver fir in the Vrancea Range, Eastern Carpathian Mountains [J].
Bouriaud, O. ;
Popa, I. .
TREES-STRUCTURE AND FUNCTION, 2009, 23 (01) :95-106
[7]   Effects of density and ontogeny on size and growth ranks of three competing tree species [J].
Boyden, Suzanne B. ;
Reich, Peter B. ;
Puettmann, Klaus J. ;
Baker, Timothy R. .
JOURNAL OF ECOLOGY, 2009, 97 (02) :277-288
[8]   The role of sensitivity analysis in ecological modelling [J].
Cariboni, J. ;
Gatelli, D. ;
Liska, R. ;
Saltelli, A. .
ECOLOGICAL MODELLING, 2007, 203 (1-2) :167-182
[9]   Intra-annual tracheid production in balsam fir stems and the effect of meteorological variables [J].
Deslauriers, A ;
Morin, H .
TREES-STRUCTURE AND FUNCTION, 2005, 19 (04) :402-408
[10]   Cellular phenology of annual ring formation of Abies balsamea in the Quebec boreal forest (Canada) [J].
Deslauriers, A ;
Morin, H ;
Begin, Y .
CANADIAN JOURNAL OF FOREST RESEARCH, 2003, 33 (02) :190-200