首页|Competitive effect,but not competitive response,varies along a climatic gradient depending on tree species identity

Competitive effect,but not competitive response,varies along a climatic gradient depending on tree species identity

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Background:Understanding the role of species identity in interactions among individuals is crucial for assessing the productivity and stability of mixed forests over time.However,there is limited knowledge concerning the variation in competitive effect and response of different species along climatic gradients.In this study,we investigated the importance of climate,tree size,and competition on the growth of three tree species:spruce(Picea abies),fir(Abies alba),and beech(Fagus sylvatica),and examined their competitive response and effect along a climatic gradient.Methods:We selected 39 plots distributed across the European mountains with records of the position and growth of 5,759 individuals.For each target species,models relating tree growth to tree size,climate and competition were proposed.Competition was modelled using a neighbourhood competition index that considered the effects of inter-and intraspecific competition on target trees.Competitive responses and effects were related to climate.Likelihood methods and information theory were used to select the best model.Results:Our findings revealed that competition had a greater impact on target species growth than tree size or climate.Climate did influence the competitive effects of neighbouring species,but it did not affect the target species'response to competition.The strength of competitive effects varied along the gradient,contingent on the identity of the interacting species.When the target species exhibited an intermediate competitive effect relative to neighbouring species,both higher inter-than intraspecific competitive effects and competition reduction occurred along the gradient.Notably,species competitive effects were most pronounced when the target species'growth was at its peak and weakest when growing conditions were far from their maximum.Conclusions:Climate modulates the effects of competition from neighbouring trees on the target tree and not the susceptibility of the target tree to competition.The modelling approach should be useful in future research to expand our knowledge of how competition modulates forest communities across environmental gradients.

Competition coefficientCompetition reductionInterspecific competitionIntraspecific competitionMixing effectsMixed species forestNeighbourhood modelsPlant-plant interactions

Teresa Valor、Lluís Coll、David I.Forrester、Hans Pretzsch、Miren del Río、Kamil Bielak、Bogdan Brzeziecki、Franz Binder、Torben Hilmers、Zuzana Sitková、Roberto Tognetti、Aitor Ameztegui

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Department of Agricultural and Forest Sciences and Engineering(DCEFA),University of Lleida,Av.Alcalde Rovira Rowe 191,E25198 Lleida,Spain

Joint Research Unit CTFC-AGROTECNIO-CERCA,Ctra.Sant Llorenç Km.2,25280,Solsona,Spain

Swiss Federal Institute of Forest,Snow and Landscape Research WSL,Zürcherstrasse 111,8903,Birmensdorf,Switzerland

CSIRO Land and Water,GPO Box 1700,Canberra,ACT,2601,Australia

Forest Growth and Yield Science,School of Life Sciences Weihenstephan,Technical University of Munich,Hans-Carl-Von-Carlowitz-Platz 2,85354,Freising,Germany

Forest Research Center,INIA-CSIC,Ctra.A Coruña Km 7.5,28040,Madrid,Spain

IuFOR,Sustainable Forest Management Research Institute,University of Valladolid & INIA,Spain

Department of Silviculture,Institute of Forest Sciences,Warsaw University of Life Sciences,Nowoursynowska 159/34,02776,Warsaw,Poland

Bavarian State Institute of Forestry(LWF),Hans-Carl-von-Carlowitz-Platz 1,D-85354,Freising,Germany

National Forest Centre,Forest Research Institute T.G.Masaryka 22,960 01,Zvolen,Slovakia

Faculty of Agricultural,Environmental and Food Sciences,Free University of Bozen-Bolzano Piazza Università,1 I-39100,Bolzano

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COST Action CLIMOCOST(European Cooperation in Science and Technology)UMBRACLIM projectSpanish Ministry for Science and InnovationJuan de la Cierva-Formación&&MPRV SRSerra-Húnter fellowship by the Generalitat de Catalunya

CA15226PID2019-111781RB-I00FJC2018-036673-1APVV-20-0365

2024

10.1016/j.fecs.2024.100176

森林生态系统(英文版)
北京林业大学

森林生态系统(英文版)

CSTPCD
影响因子：0.09
ISSN：2095-6355
年,卷(期)：2024.11(2)