Using biological traits to assess how urbanization filters plant species of small woodlands

Vallet, Jeanne; Daniel, Hervé; Beaujouan, Véronique; Rozé, Françoise; Pavoine, Sandrine

doi:10.1111/j.1654-109x.2010.01087.x

Cited by 70 publications

(48 citation statements)

References 49 publications

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“…RLQ is a speciesbased method that considers single species response to an environmental gradient (Kleyer et al, 2012) and has the advantage of explicitly incorporating the three types of fundamental ecological data used in trait-environment relationship studies (i.e., a species functional trait matrix, an environmental matrix and a species co-occurrence matrix). These advantages make the approach taken here suitable for evaluating trait-environment relationships (Vallet et al, 2010;Kleyer et al, 2012;Pease et al, 2012;Keck et al, 2014).…”

Section: Discussionmentioning

confidence: 99%

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Use of functional traits to assess changes in stream fish assemblages across a habitat gradient

2016

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Functional traits are important for understanding the links between species occurrence and environmental conditions. Identifying these links makes it possible to predict changes in species composition within communities under specific environmental conditions. We used functional traits related to habitat use and trophic ecology in order to assess the changes in fish community composition between streams with varying habitat structure. The relationship between the species traits and habitat characteristics was analyzed using an RLQ ordination analysis. Although species were widely distributed in habitats with different structures, physical conditions did favor some species based on their functional characteristics. Eight functional traits were found to be associated with stream habitat structure, allowing us to identify traits that may predict the susceptibility of fish species to physical habitat degradation.Os atributos funcionais são importantes para entender a ligação entre ocorrência das espécies e condições ambientais, permitindo predizer sobre as mudanças na composição de espécies em comunidades submetidas a condições ambientais específicas. Utilizamos atributos funcionais relacionados com o uso de habitat e ecologia trófica para avaliar as mudanças na composição de espécies de peixes em riachos com diferenças na estrutura física. O relacionamento entre os atributos das espécies e as variáveis ambientais foi avaliado por meio da análise de ordenação RLQ. Embora algumas espécies tenham sido amplamente distribuídas em hábitats com diferentes características, outras foram restritas por essas condições e este relacionamento está associado com as características morfológicas. Oito atributos funcionais foram capazes de detectar as variações na estrutura física do hábitat em riachos, permitindo a identificação de atributos que podem predizer a suscetibilidade das espécies de peixes para a degradação física do hábitat.

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Section: Discussionmentioning

confidence: 99%

“…Prior to the RLQ ordination, a separate ordination analysis was performed for each matrix (Vallet et al, 2010). We conducted a Correspondence Analysis (CA) with the L matrix.…”

Section: Discussionmentioning

confidence: 99%

Use of functional traits to assess changes in stream fish assemblages across a habitat gradient

2016

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“…Bird species composition has been shown by multiple studies to vary significantly across gradients of urban/suburban development (Crooks et al 2004, Miller et al 2007). Effects of anthropogenic development on native arthropods, plants, and amphibians have been documented recently by Sattler et al (2010), Vallet et al (2010), and Hamer and Parris (2011), respectively. Indeed, urbanization has been characterized as a ''massive unplanned experiment '' (McDonnell and Pickett 1990), providing an opportunity for ecologists to explore both theoretical and applied questions about ecosystem structure and function.…”

Section: Discussionmentioning

confidence: 98%

Sensitivity of breeding birds to the “human footprint” in western Great Lakes forest landscapes

et al. 2015

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Abstract. Breeding birds in forest ecosystems are generally diverse, habitat selective, and easily sampled. Because they must integrate environmental variables over space and time, local populations of forest birds (like other animal and plant taxa) may provide meaningful signals of local forest health or degradation. We evaluated 949 breeding bird surveys in areas ranging from degraded urban/suburban forest remnants to relatively pristine old growth forests in the western Laurentian Great Lakes region of North America. The ''human footprint'' across this landscape was represented by a one-dimensional numeric gradient derived from land cover variables, forest fragmentation metrics, and publicly available data on housing density and transportation corridors. We used an iterative, maximum likelihood approach to quantify species-specific responses to this human disturbance gradient. Many species showed significant directional responses, consistent with known life history attributes. Other species were most commonly detected at intermediate levels of anthropogenic disturbance, yielding unimodal responses. Relationships between the ''human footprint'' and occurrences of 38 bird species were illustrated by general Gaussian functions that represented both unidirectional and unimodal patterns. These biotic response (BR) functions were combined into a bird-based index of ecological condition (IEC) ranging from 0 (maximally degraded) to 10 (minimally degraded). We described a successful application of the IEC method at the Wild Rivers Legacy Forest (WRLF), a .260 km 2 conservation landscape in northeastern Wisconsin, USA, managed primarily under a working forest conservation easement established in 2006. In general, areas within the WRLF yielded high IEC values (7.0-9.0), but nearby forest areas not under the conservation easement were characterized by significantly lower IEC values based on breeding bird assemblages.

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“…; Vallet et al . ). By modifying the habitat filters mediating species admission, altered disturbance regimes can change the functional composition of plant communities as species with traits maladapted to novel habitat conditions decline and better‐adapted species increase (Moles, Gruber & Bonser ; Mouillot et al .…”

Section: Introductionmentioning

confidence: 97%

A plant strategy approach to understand multidecadal change in community assembly processes in Australian grassy woodlands

2015

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Summary1. The mechanisms of community assembly underpinning plant invasion are contested; limiting similarity predicts divergence in the traits of native and alien species whilst habitat filtering predicts trait convergence. Using site-based floristic data collected three decades apart, we ask whether the competitor-stress tolerator-ruderal (CSR) strategies of herbaceous alien and native plant species in Australian woodlands show evidence of divergence (indicating limiting similarity) or convergence (indicating habitat filtering). We also ask whether increasing dereliction between the two sampling periods, as a result of declining fire frequency, has influenced habitat filtering processes. 2. Null models were used to assess the similarity in CSR strategies of native and alien species in order to identify the community assembly processes driving woodland invasions. The observed frequencies of CSR types were also compared to randomly assembled communities from null models for species experiencing increases, decreases or static abundance changes between the two surveys to assess the impacts of dereliction on habitat filters. 3. The spectrum of CSR strategies of the most common aliens (n = 25) was highly convergent with the strategies of the most common natives (n = 51). Competitive-ruderal species dominated the flora (> 30% of all species), and strict competitors were absent. No aliens exhibited a stress-tolerant strategy, and ruderals were more common in the alien flora (i.e. 36% vs. 18% of native species). Null models revealed differences in the CSR strategies of increaser and decreaser species at three of the ten sites examined, although none of these trends were consistent across the sites, indicating that increasing dereliction has not dramatically altered the habitat filters determining species admission. 4. Synthesis. The similarity of CSR types between alien and native species indicates that habitat filtering is the principal community assembly process operating in the study region. We discuss our findings with respect to suggestions that limiting similarity and environmental filtering may be occurring simultaneously to structure plant communities. Species abundance changes due to dereliction were not evident as a coordinated shift in the functional composition of woodland dominants suggesting that time lags between altered management regimes (dereliction) and the functional response of species to habitat filters may still be playing out.

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Using biological traits to assess how urbanization filters plant species of small woodlands

Cited by 70 publications

References 49 publications

Use of functional traits to assess changes in stream fish assemblages across a habitat gradient

Use of functional traits to assess changes in stream fish assemblages across a habitat gradient

Sensitivity of breeding birds to the “human footprint” in western Great Lakes forest landscapes

A plant strategy approach to understand multidecadal change in community assembly processes in Australian grassy woodlands

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