The evolution of CSR life-history strategies in a plant model with explicit physiology and architecture

Bornhofen, Stefan; Barot, Sébastien; Lattaud, Claude

doi:10.1016/j.ecolmodel.2010.09.014

Cited by 32 publications

(18 citation statements)

References 36 publications

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“…; Bornhofen et al. ). Wilson & Lee () considered the theory to be the most comprehensive and coherent in community ecology.…”

Section: Introductionmentioning

confidence: 98%

“…Even though there has been some criticism, especially with regard to the high level of generalization (Wilson & Lee 2000), the CSR system has been frequently used to describe variation in vegetation in a function-oriented way (Kö rner & Jeltsch 2008;Cerabolini et al 2010;Bornhofen et al 2011). Wilson & Lee (2000) considered the theory to be the most comprehensive and coherent in community ecology.…”

Section: Introductionmentioning

confidence: 99%

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Mapping plant strategy types using remote sensing

Schmidtlein

Feilhauer

Bruelheide

2011

J Vegetation Science

135

124

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Aims: The three-strategy (CSR) model proposed by Grime constitutes one of the most established systems for plant functional types. The primary strategies (competitive ability, adaptation to severe stress and adaptation to disturbance) relate to the productivity and level of disturbance at a given site. Accordingly, their change in space and time may serve as an illustration and measure of key processes such as succession, eutrophication and habitat shift. Here, we make use of the known links between the three primary strategies to traits with potential relevance for canopy reflectance, and test whether remote sensing is able to reproduce the spatial pattern of strategy types.Location: A raised bog and minerotrophic fen complex, Murnauer Moos, Germany.Methods: Field data on the distribution of plant strategies in sample plots were regressed against canopy reflectance using partial least squares regression. The resulting models were validated and applied to airborne hyperspectral imagery on a per pixel basis. The resulting local maps for each strategy type and their combined representation in an RGB colour composite were interpreted in terms of plant species composition and environmental constraints.Results: All three primary strategy types could be mapped using remote sensing. Reflectance spectra related to competitive ability and adaptation to severe stress suggest that typical traits linked to these strategies exerted a direct influence. On the other hand, species with low cover values played a decisive role for the strength of the statistical relationship between reflectance and strategies. Because these species have a low impact on canopy reflectance, their contribution is better explained by their role as proxies for covarying variables such as the total cover of dead plant material.Conclusions: Our study demonstrates the potential to detect community strategy type composition using hyperspectral remote sensing, providing direct insights into spatial ecological patterns. By illustrating the exposure to stress, competition and disturbance, the derived maps of functional traits are potentially useful for applications in nature management and for the monitoring of functional shifts in ecosystems. As a next step, they can be easily combined into maps of functional diversity. Upcoming satellites with higher spectral resolution will improve access to this kind of spatial information.

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“…; Bornhofen et al. ). Wilson & Lee () considered the theory to be the most comprehensive and coherent in community ecology.…”

Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Mapping plant strategy types using remote sensing

Schmidtlein

Feilhauer

Bruelheide

2011

J Vegetation Science

135

124

View full text Add to dashboard Cite

show abstract

“…The differences in interactions and traits associated with species along stress gradients (Maestre et al 2009;Malkinson & Tielb€ orger 2010;Bornhofen, Barot & Lattaud 2011;Dmitriew 2011) may also apply to patterns of genotypic variation within species. For species that can live across a variety of environments, we predict that genotypes that are favoured in benign habitats might be better competitors than those favoured in stressful environments.…”

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confidence: 99%

Parental environments and interactions with conspecifics alter salinity tolerance of offspring in the annual Medicago truncatula

et al. 2013

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Summary1. Based on expectations of the stress-gradient hypothesis for conspecific interactions, stress-sensitive genotypes may be able to persist in stressful environments when positive interactions between individuals occur under stressful environments. Additionally, we test how parental environmental effects alter responses to stress and outcomes of conspecific interactions in stress. While the stress-gradient hypothesis focuses on plant growth, earlier flowering may provide stress avoidance in short-lived organisms. 2. We studied responses to soil salinity and conspecific neighbour using genotypes of Medicago truncatula (Fabaceae) originating from saline or non-saline environments, utilizing seeds from parental plants grown in saline or non-saline environments. During the early stages of reproduction, we quantified leaf number, as a measure of vegetative growth, and number of flowers, as a measure of early reproduction potential. 3. Based on leaf counts, non-saline genotypes were better competitors than saline-origin genotypes and benefited from neighbouring plants in saline environments. This positive interaction was detected only when seeds were matured on parental plants grown in non-saline environments. Saline-origin genotypes displayed greater salinity tolerance in early flowering than non-saline genotypes. Plants with neighbours had greater early flowering, regardless of origin, consistent with facilitative interactions in stressful environments. 4. Transgenerational plastic responses influenced neighbouring plant interactions on plant growth, and results suggest that facilitative interactions may be transient only persisting for one generation. However, earlier flowering of non-saline genotypes when grown with a neighbouring plant is consistent with facilitative interactions resulting in reproductive benefits in saline environments, if earlier flowering is favoured in saline environments. 5. Synthesis. Adaptation to stressful environments allows tolerant genotypes to persist in these environments. Less appreciated is that stress-sensitive genotypes lacking such adaptations may persist in stressful environments via positive interactions with other individuals. Thus, positive interactions between individuals may explain the persistence of stress-sensitive genotypes within a population adapted to stressful environments.

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“…This would require studying the joint evolution of functional and demographic traits and should lead to the evolution of ruderals – the third strategy of Grime's CSR theory – that have not appeared in our present model (see, e.g. Bornhofen, Barot & Lattaud ).…”

Section: Discussionmentioning

confidence: 99%

Evolution of nutrient acquisition: when space matters

Bornhofen

Boudsocq²,

Raynaud³

et al. 2015

Functional Ecology

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Summary1. Evolution of nutrient acquisition by plants should depend on two forces: local competition is based on the capacity to exploit the local nutrient resource, and regional competition is based on the capacity to occupy the whole landscape through seed production and dispersal. 2. We build a spatially explicit simulation model where a limiting nutrient is recycled in each local patch of a lattice by individual plants. The model includes both local and regional competition. 3. Heterogeneity in nutrient availability and dispersal limitation mitigate the effect of competition for the local nutrient resource and allow the evolution of lower rates of nutrient uptake. Our spatially explicit model suggests that evolution in richer ecosystems selects 'expensive' strategies (high acquisition, low conservation of resources) compared to poor ecosystems. 4. Low rates of nutrient acquisition can be considered as a form of altruism because they leave more resource available for other individuals. Our model thus suggests that the influence of spatial processes on the evolution of altruism is pervasive and is linked to key aspects of ecosystem functioning. 5. Because our model includes both regional and local competition, evolution does not minimize the availability of mineral nutrient, although evolution or species replacement is often thought to minimize the availability of nutrient. Taken together, our work confirms that the interplay between local and regional competition is critical for the evolution of plant nutrient strategies and its effect on ecosystem properties.

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The evolution of CSR life-history strategies in a plant model with explicit physiology and architecture

Cited by 32 publications

References 36 publications

Mapping plant strategy types using remote sensing

Mapping plant strategy types using remote sensing

Parental environments and interactions with conspecifics alter salinity tolerance of offspring in the annual Medicago truncatula

Evolution of nutrient acquisition: when space matters

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