Above- and belowground drivers of intraspecific trait variability across subcontinental gradients for five ubiquitous forest plants in North America

被引：12

作者：

Cardou, Francoise ^{[1
,2
]}

Munson, Alison D. ^{[3
]}

Boisvert-Marsh, Laura ^{[1
]}

Anand, Madhur ^{[4
]}

Arsenault, Andre ^{[5
]}

Bell, F. Wayne ^{[6
]}

Bergeron, Yves ^{[7
,8
]}

Boulangeat, Isabelle ^{[9
]}

Delagrange, Sylvain ^{[10
,11
]}

Fenton, Nicole J. ^{[7
]}

Gravel, Dominique ^{[12
]}

Hamel, Benoit ^{[1
]}

Hebert, Francois ^{[13
]}

Johnstone, Jill F. ^{[14
,15
]}

Kumordzi, Bright B. ^{[3
,16
]}

Macdonald, S. Ellen ^{[17
]}

Mallik, Azim ^{[18
]}

McIntosh, Anne C. S. ^{[19
]}

McLaren, Jennie R. ^{[20
]}

Messier, Christian ^{[10
,11
]}

Morris, Dave ^{[21
]}

Shipley, Bill ^{[12
]}

Sirois, Luc ^{[22
]}

Thiffault, Nelson ^{[3
,23
]}

Aubin, Isabelle ^{[1
]}

机构：

[1] Nat Resources Canada, Canadian Forest Serv, Great Lakes Forestry Ctr, Sault Ste Marie, ON, Canada

[2] Univ Toronto Scarborough, Dept Biol Sci, Scarborough, ON, Canada

[3] Univ Laval, Ctr Etud Foret, Dept Sci Bois & Foret, Quebec City, PQ, Canada

[4] Univ Guelph, Sch Environm Sci, Guelph, ON, Canada

[5] Nat Resources Canada, Canadian Forest Serv, Atlantic Forestry Ctr, Corner Brook, NF, Canada

[6] Ontario Minist Northern Dev Mines Nat Resources &, Ontario Forest Res Inst, Sault Ste Marie, ON, Canada

[7] Univ Quebec Abitibi Temiscamingue, Forest Res Inst, Rouyn Noranda, PQ, Canada

[8] Univ Quebec Montreal, Dept Sci Biol, Montreal, PQ, Canada

[9] Univ Grenoble Alpes, LESSEM, INRAE, St Martin Dheres, France

[10] Univ Quebec Outaouais, Inst Sci Foret Temperee, Ripon, PQ, Canada

[11] Univ Quebec Montreal, Ctr Etud Fork, Montreal, PQ, Canada

[12] Univ Sherbrooke, Dept Biol, Sherbrooke, PQ, Canada

[13] Serv Gest Feu & Reglementat SGFR, Quebec City, PQ, Canada

[14] Univ Saskatchewan, Dept Biol, Saskatoon, SK, Canada

[15] Univ Alaska Fairbanks, Inst Arctic Biol, Fairbanks, AK USA

[16] Viridis Environm Consult, Accra, Ghana

[17] Univ Alberta, Dept Renewable Resources, Edmonton, AB, Canada

[18] Lakehead Univ, Dept Biol, Thunder Bay, ON, Canada

[19] Univ Alberta, Sci Dept, Augustana Campus, Camrose, AB, Canada

[20] Univ Texas El Paso, Dept Biol Sci, El Paso, TX 79968 USA

[21] Ontario Minist Northern Dev Mines Nat Resources &, Ctr Northern Forest Ecosyst Res, Thunder Bay, ON, Canada

[22] Univ Quebec Rimouski, Ctr Etud Foret, Dept Biol Chim & Geog, Rimouski, PQ, Canada

[23] Nat Resources Canada, Canadian Wood Fibre Ctr, Ste Foy, PQ, Canada

来源：

JOURNAL OF ECOLOGY | 2022年 / 110卷 / 07期

基金：

加拿大自然科学与工程研究理事会;

关键词：

biotic interactions; canopy structure; climate gradient; edaphic conditions; environmental matching; functional ecology; phenotypic plasticity; tissue nutrient concentration; ECONOMICS SPECTRUM; FUNCTIONAL TRAITS; GROWTH; VEGETATION; FRAMEWORK; RESPONSES; PATTERNS; CLIMATE;

D O I：

10.1111/1365-2745.13894

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

1. Intraspecific trait variability (ITV) provides the material for species' adaptation to environmental changes. To advance our understanding of how ITV can contribute to species' adaptation to a wide range of environmental conditions, we studied five widespread understorey forest species exposed to both continental-scale climate gradients, and local soil and disturbance gradients. We investigated the environmental drivers of between-site leaf and root trait variation, and tested whether higher between-site ITV was associated with increased trait sensitivity to environmental variation (i.e. environmental fit). 2. We measured morphological (specific leaf area: SLA, specific root length: SRL) and chemical traits (Leaf and Root N, P, K, Mg, Ca) of five forest understorey vascular plant species at 78 sites across Canada. A total of 261 species-by-site combinations spanning similar to 4300km were sampled, capturing important abiotic and biotic environmental gradients (neighbourhood composition, canopy structure, soil conditions, climate). We used multivariate and univariate linear mixed models to identify drivers of ITV and test the association of between-site ITV with environmental fit. 3. Between-site ITV of leaf traits was primarily driven by canopy structure and climate. Comparatively, environmental drivers explained only a small proportion of variability in root traits: these relationships were trait specific and included soil conditions (Root P), canopy structure (Root N) and neighbourhood composition (SRL, Root K). Between-site ITV was associated with increased environmental fit only for a minority of traits, primarily in response to climate (SLA, Leaf N, SRL). 4. Synthesis. By studying how ITV is structured along environmental gradients among species adapted to a wide range of conditions, we can begin to understand how individual species might respond to environmental change. Our results show that generalisable trait-environment relationships occur primarily aboveground, and only accounted for a small proportion of variability. For our group of species with broad ecological niches, variability in traits was only rarely associated with higher environmental fit, and primarily along climatic gradients. These results point to promising research avenues on the various ways in which trait variation can affect species performance along different environmental gradients.

引用

页码：1590 / 1605

页数：16