Growth forms and phenomorphology traits along an environmental gradient: tools for studying vegetation?

Floret, C.; Galan, M. J.; Le-Floc'h, E.; Orshan, G.; Romane, F.

doi:10.2307/3236055

Cited by 86 publications

(57 citation statements)

References 36 publications

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“…Comparatively, chamaephytes are well established on the serpentinites (22.7%), whereas the therophytes show a high proportion on limestone (39.9%) and the geophytes a very high proportion on the schistes (34.5%). These results are quite different from those given by FLORET &al. (1990) andal.…”

Section: Life-formscontrasting

confidence: 56%

Floristic Analyses of the Corsican Flora: Distribution in Ecological Compartments (Vegetation Belts, Habitats and Substrates)

Schlüssel¹,

Jeanmonod

Gamisans³

2014

Candollea

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This article analyzes partial data published in the "Flora Corsica" in order to characterize the Corsican vascular flora. These analyses focus on different aspects of the flora such as species richness, taxonomic distribution, abundance and life-forms at different vegetation belts, habitats and substrates. The results are compared with other geographic regions, particularly from the European Mediterranean and adjacent areas. The decrease of species richness with an increase of altitude as well as the sharp decrease of Fabaceae has been confirmed. Regarding the biological spectrum, the decrease of the therophytes with an increase of altitude is obvious and compensated by the increase of the hemicryptophytes. On Corsica several peculiarities have been highlighted in the different ecological compartments: 1. the littoral and the cryo-oromediterranean belts appear to be very different from the others in many features; 2. the rocky habitats are shown to be especially important for the diversity of families such as Poaceae and Caryophyllaceae; 3. calcareous areas are shown to be extremely important for the alpha diversity as well as for the restricted range taxa. Finally, the specificity of the flora growing on the ultramafic outcrops is confirmed and emphazised.

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Section: Life-formscontrasting

confidence: 56%

Floristic Analyses of the Corsican Flora: Distribution in Ecological Compartments (Vegetation Belts, Habitats and Substrates)

Schlüssel¹,

Jeanmonod

Gamisans³

2014

Candollea

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“…Life forms (or growth forms) give relevant and revealing information of functional ecological shifts taking place at the community or ecosystem levels [35,55]. Moreover, life forms effectively synthesize various life history traits, as they integrate both morphological and physiological attributes [22,23]. The life forms selected in our study are: therophytes (annual plants), geophytes (bulbous plants), hemicryptophytes (herbaceous perennials), chamaephytes (shrubs) and phanerophytes (trees).…”

Section: Methodsmentioning

confidence: 99%

Effects of soil surface disturbances after logging on plant functional types

Gondard

Deconchat²

2003

Ann. For. Sci.

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-Soil surface disturbances after logging influence plant species diversity. To estimate these effects, the objective of the present study was to test three hypotheses: (1) each soil surface disturbance type is characterized by a group of plant species that emerges following the disturbance, (2) each emergent group of plant species has distinct, recognizable biological traits, (3) in two different bio-geographic plant communities, each soil surface disturbance type is characterized by the same set of biological traits. We present results from Atlantic oak (Quercus pubescens Willd., Q. robur L. and Q. petraea (Mattuschka) Liebl.) coppices and natural Mediterranean Aleppo pine (Pinus halepensis Miller) forests of southern France. Both studies use the same methodology based on a typology of soil surface perturbation 1-3 years after logging combined with a vegetation inventory. Plant functional traits (morphological, life history and regeneration), not necessarily linked with taxonomic attribution, were used to constitute putative functional groups to allow comparison between the two studies. Results were similar in the two studies and confirmed the working hypotheses.plant species / logging / soil surface disturbance / life traits Résumé -Effets des perturbations de la surface du sol dues à l'exploitation forestière sur la diversité végétale. Les perturbations de la surface du sol dues à l'exploitation forestière sont susceptibles d'agir sur la diversité végétale. Pour estimer ses effets, l'objectif était de tester trois hypothèses : (1) chaque type de perturbation de la surface du sol est caractérisé par un groupe d'espèces qui se présente après la perturbation, (2) ces groupes d'espèces ont des traits biologiques distincts, (3) dans deux communautés bio-géographiques différentes, chaque type de perturbation de la surface du sol est caractérisé par les mêmes traits biologiques. Nous présentons les résultats obtenus dans le cas de taillis de chênes (Quercus pubescens Willd., Q. robur L. and Q. petraea (Mattuschka) Liebl.) de la région atlantique et des forêts de pin d'Alep (Pinus halepensis Miller) de la région méditerranéenne du sud de la France. La méthodologie, utilisée dans les deux études, est basée sur une typologie des perturbations de la surface du sol dans les trois premières années qui suivent l'exploitation forestière combinée avec des relevés de végétation. Des traits fonctionnels (traits morphologiques, d'histoire de vie et de régénération), sans attribution taxonomique particulière, ont été utilisés pour permettre une comparaison entre les deux études. Les résultats étaient similaires dans les deux études et confirment les hypothèses. diversité végétale / exploitation forestière / perturbation de la surface du sol / traits de vie

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“…Our results showed the dominance of chamaephytes in Stipa tenacissima steppes; this chamaephytization has its origin in the phenomenon of aridization (Floret et al, 1990). In fact, the highest percentage of chamaephytes was shown in Tataouine, characterized by a lower aridity index of 0.096, while lower percentages of chamaephytes were shown in Haffouz (18.18%) and Chaambi and Jbel Halfa (both 33.33%), characterized by aridity indexes of greater than 0.2.…”

Section: Floristic Composition Of Tunisian Stipa Tenacissima Steppesmentioning

confidence: 73%

Assessment of species diversity and state of Stipa tenacissima steppes

Ghiloufi¹,

Pérez²,

Gomez³

et al. 2015

Turk J Bot

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North African steppes are subjected to extreme degradation resulting in the reduction of their surface, genetic erosion of resources, and decrease in biodiversity. Stipa tenacissima steppes, which constitute one of the most representative vegetation types in the driest areas of the Mediterranean basin, are continuously degrading. With the aim of contributing to a better knowledge of the floristic composition and diagnosing the state of degradation of these steppes, we conducted a phytoecological analysis of 10 S. tenacissima sites in Tunisia. Floristic inventory compiled a systematic list of 46 vascular plant species belonging to 43 genera and 26 families. Species richness ranged from 4 to 18 species per 900 m 2 . Total vegetation cover was moderate and fluctuated between 22.8% and 49.9%. Our results revealed also a decreasing trend in species richness with increasing elevation (ρ = -0.585). Indeed, species richness was negatively correlated with slope (ρ = -0.19) and positively correlated with sand content (ρ = 0.262). Biological types were dominated by chamaephytes; this chamaephytization is due to the phenomenon of aridization and overgrazing. Moreover, the low species cover and the appearance of nonpalatable species highlighted the vulnerability of these steppes to degradation.

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Growth forms and phenomorphology traits along an environmental gradient: tools for studying vegetation?

Cited by 86 publications

References 36 publications

Floristic Analyses of the Corsican Flora: Distribution in Ecological Compartments (Vegetation Belts, Habitats and Substrates)

Floristic Analyses of the Corsican Flora: Distribution in Ecological Compartments (Vegetation Belts, Habitats and Substrates)

Effects of soil surface disturbances after logging on plant functional types

Assessment of species diversity and state of Stipa tenacissima steppes

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