A Kahmen

A Mahmoud

A Weigelt

AE Miller

AJ Kerkhoff

AL Clarke

AR Beddows

BD Campbell

Brett Neilan

C Armas

C Violle

C Wagg

CB Cooper

Clare J. Trinder

CM Beale

CM Donald

CM Scrimgeour

D Barraclough

D Robinson

D Tilman

David Robinson

DE Goldberg

DV Murphy

EF Connor

EG Lamb

EI Newman

GC Evans

GC Williams

GP Quinn

GR Sagar

Hazel Davidson

IW Ashton

J Chave

J Craine

JFJ Cahill

JL Harper

JP Grime

JR Leake

M Rees

MA Huston

MJ Crawley

MM Caldwell

MN Fotelli

NK Watkins

PA Keddy

PD Brooks

R Brooker

RB McKane

RE Ricklefs

RJ Reader

Rob W. Brooker

RW Brooker

SC Wong

SE Hobbie

SP Hubbell

TA O'Brien

TP McGonigle

WR Cookson

Y Linhart

PLoS ONE

English

PubMed

Although rarely acknowledged, our understanding of how competition is modulated by environmental drivers is severely hampered by our dependence on indirect measurements of outcomes, rather than the process of competition. To overcome this, we made direct measurements of plant competition for soil nitrogen (N). Using isotope pool-dilution, we examined the interactive effects of soil resource limitation and climatic severity between two common grassland species. Pool-dilution estimates the uptake of total N over a defined time period, rather than simply the uptake of ¹⁵N label, as used in most other tracer experiments. Competitive uptake of N was determined by its available form (NO₃⁻ or NH₄⁺). Soil N availability had a greater effect than the climatic conditions (location) under which plants grew. The results did not entirely support either of the main current theories relating the role of competition to environmental conditions. We found no evidence for Tilman's theory that competition for soil nutrients is stronger at low, compared with high nutrient levels and partial support for Grime's theory that competition for soil nutrients is greater under potentially more productive conditions. These results provide novel insights by demonstrating the dynamic nature of plant resource competition

Clare J Trinder

Rob W Brooker

Directory of Open Access Journals

A new hammer to crack an old nut: interspecific competitive resource capture by plants is regulated by nutrient supply, not climate.

Although rarely acknowledged, our understanding of how competition is modulated by environmental drivers is severely hampered by our dependence on indirect measurements of outcomes, rather than the process of competition. To overcome this, we made direct measurements of plant competition for soil nitrogen (N). Using isotope pool-dilution, we examined the interactive effects of soil resource limitation and climatic severity between two common grassland species. Pool-dilution estimates the uptake of total N over a defined time period, rather than simply the uptake of 15N label, as used in most other tracer experiments. Competitive uptake of N was determined by its available form (NO3 2 or NH4 +). Soil N availability had a greater effect than the climatic conditions (location) under which plants grew. The results did not entirely support either of the main current theories relating the role of competition to environmental conditions. We found no evidence for Tilman’s theory that competition for soil nutrients is stronger at low, compared with high nutrient levels and partial support for Grime’s theory that competition for soil nutrients is greater under potentially more productive conditions. These results provide novel insights by demonstrating the dynamic nature of plant resource competition

CiteSeerX

A New Hammer to Crack an Old Nut: Interspecific Competitive Resource Capture by Plants Is Regulated by Nutrient Supply, Not Climate

Trinder Clare J.

Brooker Rob W.

Davidson Hazel

Robinson David

Public Library of Science (PLOS)

Trinder, Clare J

Brooker, Rob W

Davidson, Hazel

Robinson, David

Aberdeen University Research

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A nonlinear regression approach to test for size-dependence of competitive ability.

Adaptation and natural selection. A critique of some current evolutionary thought.

An analysis of competitive ability in three perennial grasses.

Competition and diversity in herbaceous vegetation.

Competition for phosphorus; differential uptake from dual-isotope-labelled soil interspaces between shrub and grass.

Competition, neutrality, and community organisation. In:

Competition, traits and resource depletion in plant communities.

Competition.

Contrasting natural experiments confirm competition between house finches and house sparrows.

Core Team

Differential genetic influences on competitive effect and response in Arabidopsis thaliana.

Disintegration of the ecological community.

Don’t diss integration: A comment on Ricklef’s disintegrating communities.

Experimental design and data analysis for biologists. Cambridge:

Exploitation of phosphate from fertile soil microsites by 3 Great-basin perennials when in competition.

Geßler A

Gimona A

Gross nitrogen fluxes in soil: theory, measurement and application of 15N pool dilution techniques.

How relevant are instantaneous measurements for assessing resource depletion under plant cover? A test on light and soil water availability in 18 herbaceous communities.

Indices of plant competition.

Interspecific competition and species cooccurrence patterns on islands: null models and the evaluation of evidence.

Measuring plant interactions: A new comparative index.

Niche complementarity due to plasticity in resource use: plant partitioning of chemical N forms.

Niche complementarity for nitrogen use - An explanation for the biodiversity and ecosystem functioning relationship in grasslands?

Nitrogen preferences and plant-soil feedbacks as influenced by neighbours in the alpine tundra.

On the meaning of competition and the mechanisms of competitive superiority.

Plant allometry, stoichiometry and the temperature-dependence of primary productivity.

Plant root proliferation in nitrogen-rich patches confers competitive advantage.

Plant strategies and the dynamics and structure of plant communities.

Plant strategies, vegetation processes and ecosystem properties.

Plant uptake of inorganic and organic nitrogen: Neighbour identity matters.

Plant-plant interactions and environmental change.

Population biology of plants.

Quantifying the contribution of dissolved organic matter to soil nitrogen cycling using 15N isotopic pool dilution.

Reconciling plant strategy theories of Grime and Tilman.

Relationships between root morphology and nitrogen availability in a recent theoretical model describing nitrogen uptake from soil.

Resource competition and community structure.

Resource-based niches provide a basis for plant species diversity and dominance in arctic tundra.

Root-shoot growth responses during interspecific competition quantified using allometric modelling.

Stable isotope analysis and applications.

The effect of management and competition on the uptake of 32phosporus by ryegrass, meadow fescue and their natural hybrid.

The R book.

The response of tundra plant biomass, aboveground production, nitrogen, and CO2 flux to experimental warming.

The unified neutral theory of biodiversity and biogeography.

The uptake of nitrogen from soils in relation to solute diffusion.

The use of mean pool abundances to interpret 15N tracer experiments.

A new hammer to crack an old nut : interspecific competitive resource capture by plants is regulated by nutrient supply, not climate

Crossref

A new method which gives an objective measure of colonisation of roots by vesiculararbuscular mycorrhizal fungi.

An experimental test of plant strategy theory.

Carbon transfer between C3 and C4 plants linked by a common mycorrhizal network, quantified using stable carbon isotopes. Soil biol biochem 28:

Comparative plant ecology: a functional approach to common British species. London: Unwin Hyman Ltd.

Competition and nutrient kinetics along a temperature gradient: an experimental test of a mechanistic approach to niche theory.

Dactylis glomerata L.

Diffusion methods to prepare soil extracts for automated nitrogen-15 analysis.

Dynamics of nitrogen competition between successional grasses.

Interactions between plants.

Intrapopulation differentiation in annual plants. III. The contrasting effects of intra- and interspecific competition.

Mycorrhizal fungal identity and diversity relaxes plant-plant competition.

Mycorrhizal infection: assessment and quantification.

Plant competition in relation to neighbour biomass: an intercontinental study with Poa pratensis.

Quantifying the impact of competition and spatial heterogeneity on the structure and dynamics of a four-species guild of winter annuals.

Rapid shifts in phosphate acquisition show direct competition between neighbouring plants.

Stewart-Oaten A

The interaction of competition for light and nutrients.

The quantitative analysis of plant growth.

https://aura.abdn.ac.uk/bitstream/2164/2382/1/new_hammer_to_crack_an_old_nut.pdf

A new hammer to crack an old nut : interspecific competitive resource capture by plants is regulated by nutrient supply, not climate

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