Here we provide the ‘Global Spectrum of Plant Form and Function Dataset’, containing species mean... more Here we provide the ‘Global Spectrum of Plant Form and Function Dataset’, containing species mean values for six vascular plant traits. Together, these traits –plant height, stem specific density, leaf area, leaf mass per area, leaf nitrogen content per dry mass, and diaspore (seed or spore) mass – define the primary axes of variation in plant form and function. The dataset is based on ca. 1 million trait records received via the TRY database (representing ca. 2,500 original publications) and additional unpublished data. It provides 92,159 species mean values for the six traits, covering 46,047 species. The data are complemented by higher-level taxonomic classification and six categorical traits (woodiness, growth form, succulence, adaptation to terrestrial or aquatic habitats, nutrition type and leaf type). Data quality management is based on a probabilistic approach combined with comprehensive validation against expert knowledge and external information. Intense data acquisition a...
Functional and taxonomic typology of pine communities in Algiers and Oran areas (Algeria). Standa... more Functional and taxonomic typology of pine communities in Algiers and Oran areas (Algeria). Standard measurements of biodiversity, such as those based on species diversity and abundance, do not take into account the ecological and evolutionary characteristics of species per se, and provide us with an incomplete understanding of the causes and consequences of changes in biodiversity. Communities of Aleppo pines Pinus halepensis Mill. are under study in two Algerian phytogeographical areas : Algiers’ subhumid and humid bioclimate, and Oran’s semi-arid bioclimate. The purpose of this study is to analyse the floristic diversity of various communities of Aleppo pines, and to provide a typology based on twin approaches : a taxonomic analysis of the flora, and an analysis of the plants’ functional traits in these two areas. Correspondence factor analysis (CFA) has been conducted in both cases, and the results have been compared and discussed. The taxonomic analysis brings out contrasting ec...
Urbanisation is a growing phenomenon causing the decline of wild bees globally. Yet, bees manage ... more Urbanisation is a growing phenomenon causing the decline of wild bees globally. Yet, bees manage to persist in the urban matrix thanks to islands of vegetation in public parks and private gardens. While we begin to comprehend the impact of urbanisation on bees’ diversity and abundance, our understanding of its impact on the functional diversity of wild bees is limited. Here, we use an integrative approach to investigate the response of wild bees to urbanisation at the community, species, and individual levels. To do so, we sampled wild bees in 24 public parks along an urbanisation gradient in the Mediterranean city of Marseille. We found that species richness and abundance decreased in more urbanised areas, but increased in larger city parks. Moreover, larger individuals within species, but not larger species, were found in larger city parks, suggesting that park size is crucial for the persistence of bees in cities. Interestingly, we show that brighter species were found in parks s...
Phytosociological characterization of the vegetation of Gouraya National Park (Béjaïa, Algeria). ... more Phytosociological characterization of the vegetation of Gouraya National Park (Béjaïa, Algeria). Gouraya National Park covers a calcaro-dolomitic littoral solid mass and its silicicolous prolongation towards the west. It belongs to the regional hotspot of “Kabylies-Numidia-Kroumiria” but its vegetation was just partially explored. We try here a first synthesis under the phytosociological point of view. On the basis of 144 species and 56 floristic “relevés” submitted to factorial correspondence analysis and ascending hierarchical classification, the phytosociological study of Gouraya National Park highlighted seven vegetation groups attached to four phytosociological classes : the Quercetea ilicis Braun–Blanquet, 1947 and subordinated syntaxa, the Querco-Fagetea Braun–Blanquet & Vlieg, 1937 and subordinated syntaxa, and the Crithmo-limonietea Braun–Blanquet, 1947 and Asplenietea rupestris (H. M) Braun–Blanquet, 1934. We can note also the presence of species characteristic of the Rosm...
Summary. — Our aim was to ascertain whether changes in plant species richness and other vegetatio... more Summary. — Our aim was to ascertain whether changes in plant species richness and other vegetation features occur in heathland dominated by Erica scoparia L. (besom heath) through the impact of cattle grazing and oak colonization. Our study took place in the Brenne Regional Natural Park (center of France) where this ericaceous species, locally called ‘ brande’, is now considered of patrimonial interest and protected at regional and European level. We selected 10 sites in a private property, covering a wide range of ecological conditions (shallow and deep soils, grazed and non-grazed besom heath, pure and oak-colonized besom heath). Vegetation (percent occupancy of plant species) was sampled in May-June 2006 (105 samples, 1m2 each) and the impact of shrub and tree vegetation on plant biodiversity was assessed by correspondence analysis (CA) and total and partial Mantel tests (Monte-Carlo procedure). An environmental gradient of decreasing light incidence from grazed heath to old heat...
HAL (Le Centre pour la Communication Scientifique Directe), 2015
Functional and taxonomic typology of pine communities in Algiers and Oran areas (Algeria)-Standar... more Functional and taxonomic typology of pine communities in Algiers and Oran areas (Algeria)-Standard measurements of biodiversity, such as those based on species diversity and abundance, do not take into account the ecological and evolutionary characteristics of species per se, and provide us with an incomplete understanding of the causes and consequences of changes in biodiversity. Communities of Aleppo pines Pinus halepensis Mill. are under study in two Algerian phytogeographical areas: Algiers' subhumid and humid bioclimate, and Oran's semi-arid bioclimate. The purpose of this study is to analyse the floristic diversity of various communities of Aleppo pines, and to provide a typology based on twin approaches: a taxonomic analysis of the flora, and an analysis of the plants' functional traits in these two areas. Correspondence factor analysis (CFA) has been conducted in both cases, and the results have been compared and discussed. The taxonomic analysis brings out contrasting ecological descriptors (altitude, substrate, etc.) and explains the plants' distribution in relation to their environmental factors, but reveals no significant difference between the two areas under consideration. The functional analysis allowed for the identification of the main functional traits in each of the areas under study, and helped us define several functional groups in each case. A comparison of the results in both sectors shows that the organization of the Aleppo pine communities under consideration is principled upon phytogeographical, altitudinal, and disturbance gradients. Standard ecological factors evidenced by the taxonomic approach cannot single-handedly explain the dynamics of the communities; however, their functional traits have clarified and supplemented the flora's history in these two areas.
HAL (Le Centre pour la Communication Scientifique Directe), 2011
CaraCtérisation phytosoCiologique de la végétation du parC national de gouraya (Béjaïa, algérie) ... more CaraCtérisation phytosoCiologique de la végétation du parC national de gouraya (Béjaïa, algérie) Khellaf rebbas 1 , errol véla 2 , rachid gharzouli 3 , yamna djellouli 4 , djamel alatou 5 & sophie gachet 6 summary.-Phytosociological characterization of the vegetation of Gouraya National Park (Béjaïa, Algeria).-gouraya national park covers a calcaro-dolomitic littoral solid mass and its silicicolous prolongation towards the west. it belongs to the regional hotspot of "Kabylies-numidia-Kroumiria" but its vegetation was just partially explored. We try here a first synthesis under the phytosociological point of view. On the basis of 144 species and 56 floristic "relevés" submitted to factorial correspondence analysis and ascending hierarchical classification, the phytosociological study of Gouraya National Park highlighted seven vegetation groups attached to four phytosociological classes : the Quercetea ilicis Braun-Blanquet, 1947 and subordinated syntaxa, the Querco-Fagetea Braun-Blanquet & vlieg, 1937 and subordinated syntaxa, and the Crithmo-limonietea Braun-Blanquet, 1947 and Asplenietea rupestris (h.m) Braun-Blanquet, 1934. We can note also the presence of species characteristic of the Rosmarinetea officinalis Braun-Blanquet, 1947 em. rivas martinez, diaz, prieto, loidi & penas, 1991 and of Stellarietea mediae r. tX. lohmeyer & preising 1950. Within these groups, those assigned to Bupleuro-Euphorbietum dendroidis Géhu et al., 1992 can be divided in two subgroups, the typical sub-association and a new sub-association named here bupleuretosum plantaginei, characterized by the presence of rupicolous endemism. this study showed the peculiarity of the vegetation of this local biodiversity hotspot (important area for plants) and will be followed by a more in-depth study of the rupicolous littoral and sub-littoral vegetation of the area. résumé.-le parc national de gouraya recouvre un massif littoral calcaro-dolomitique et son prolongement silicicole vers l'ouest. Il appartient au point-chaud régional de « Kabylies-Numidie-Kroumirie » mais sa végétation n'a été que partiellement explorée. Nous tentons ici une première synthèse sous l'angle phytosociologique. Sur la base de 56 relevés floristiques et 144 espèces soumis à l'analyse factorielle des correspondances et à la classification hiérarchique ascendante, l'étude phytosociologique du parc national de Gouraya a mis en évidence sept groupements végétaux se rattachant à quatre classes phytosociologiques :
International audienceIn the last twenty years, several studies have stressed the importance of i... more International audienceIn the last twenty years, several studies have stressed the importance of including a historical approach in ecological studies. It helps understand structure and functioning of present ecosystems but also assess conservation objectives. In temperate regions, several studies showed that forest vascular plants differ according to forest temporal continuity. This difference is caused by a modification of forest habitats by past land use, especially soil physico-chemical properties, but is also conditioned by species colonisation potential. For instance, species more frequent in forests with a long temporal continuity, also known as ancient forest species, have life-history traits associated to poor dispersal abilities. However, the effect of past land use on the present flora has not yet been investigated in the Mediterranean. Our aim is thus to analyse floristic differences between ancient and recent forests and to identify life-history traits associated to thos...
http://www.iemss.org/sites/iemss2016/International audienceData produced by the SeasEra CIGESMED ... more http://www.iemss.org/sites/iemss2016/International audienceData produced by the SeasEra CIGESMED project (Coralligenous based Indicators to evaluate and monitor the "Good Environmental Status" of the MEDiterranean coastal waters) have a high potential to be used by several stakeholders involved in environmental management. A new consortium called IndexMed whose task is to index Mediterranean biodiversity data, makes it possible to build graphs in order to analyse the CIGESMED data and develop new ways for data mining of coralligenous data. This paper presents the prototypes under development that test the ability of graphs dataBases and tools to connect biodiversity objects with non-centralized data. This project explores the ability of two scientific communities to work together. The uses of data from coralligenous habitat demonstrate the prototype functionalities and introduce new perspectives to analyse environmental and societal responses.Les données produites par le p...
Data produced by the CIGESMED project (Coralligenous based Indicators to evaluate and monitor the... more Data produced by the CIGESMED project (Coralligenous based Indicators to evaluate and monitor the "Good Environmental Status" of the MEDiterranean coastal waters) have a high potential for use by several stakeholders involved in environmental management. A new consortium called IndexMed whose task is to index Mediterranean biodiversity data, makes it possible to build graphs in order to analyse the CIGESMED data and develop new ways for data mining of coralligenous data. This paper presents the prototypes under development that test the ability of graphs approach to connect biodiversity objects with non-centralized data. This project explores the ability of two scientific communities to work together. The uses of data from coralligenous habitat demonstrate the prototype functionalities and introduce new perspectives to analyse environmental and societal responses.
The SHARC Interest Group of the Research Data Alliance was established to improve research credit... more The SHARC Interest Group of the Research Data Alliance was established to improve research crediting and rewarding mechanisms for scientists who wish to organise their data (and material resources) for community sharing. This requires that data are findable and accessible on the Web, and comply with shared standards making them interoperable and reusable in alignment with the FAIR principles. It takes considerable time, energy, expertise and motivation. It is imperative to facilitate the processes to encourage scientists to share their data. To that aim, supporting FAIR principles compliance processes and increasing the human understanding of FAIRness criteria – i.e., promoting FAIRness literacy – and not only the machine-readability of the criteria, are critical steps in the data sharing process. Appropriate human-understandable criteria must be the first identified in the FAIRness assessment processes and roadmap. This document is a reusable template that aims to support FAIRifica...
These researches fit into the works coordinated by the Observatoire Hommes-Milieux (OHM) of Bassi... more These researches fit into the works coordinated by the Observatoire Hommes-Milieux (OHM) of Bassin Minier de Provence (BMP) and dedicated to vegetal covers and microbial communities of soils. They aim to study the terrestrial deposits of red muds resulting from past and current activities of alumina extraction. Despite the red muds have been extensively studied about their industrial recycling potentials (Klauber et al., 2011), the studies on their environmental effects, especially on the biological component of soils, are far less numerous (Garau et al., 2007, 2011, 2014; Krishna et al., 2014; Lombi et al., 2002) and, furthermore, lacking in the context of BMP. To this date, the various studies available in the literature emphasize the importance of the soil matrix in the modulation of biological responses when it is mixed with red muds. Therefore, this aspect is important to invest at the local scale in the prospect of a potential use of red muds as improvement to soils or to the ...
Data produced by biodiversity research projects that evaluate and monitor Good Environmental Stat... more Data produced by biodiversity research projects that evaluate and monitor Good Environmental Status have a high potential for use by stakeholders involved in [marine] environmental management. The lack of specific scientific objectives, poor organizational logic, and a characteristically disorganized collection of information leads to a decentralized data distribution, hampering environmental research. In such a heterogeneous system across different organizations and data formats, it is difficult to efficiently harmonize the outputs. There are few tools available to assist. The task of the newly created consortium of IndexMeed is to index biodiversity data (and to provide an index of qualified existing open datasets) and make it possible to build graphs to assist in the analysis and development of new ways to mine data. Standards (including TDWG recommendations) and specific protocols can be applied to interconnect databases. Such semantic approaches greatly increase data interopera...
Agricultural landscapes are more and more characterized by intensification and habitat losses. La... more Agricultural landscapes are more and more characterized by intensification and habitat losses. Landscape composition and configuration are known to mediate insect abundance and richness. In the context of global insect decline, and despite 75% of crops being under insect’s dependence, there is still a gap of knowledge about the link between pollinators and aromatic crops. Fennel (Foeniculum vulgare) is an aromatic plant cultivated in South of France, for its essential oil which is of great economic interest. Using pan-traps, we investigated the influence of the surrounding habitats at landscape scale (semi-natural habitat proportion and vicinity, landscape configuration) and local scale agricultural practices (insecticides and patch size) on fennel-flower-visitor abundance and richness and their subsequent impact on fennel essential oil yield. We found that fennel may to be a generalist plant species. We did not find any effect of intense local management practices on insect abundan...
This is an open access article under the terms of the Creat ive Commo ns Attri bution License, wh... more This is an open access article under the terms of the Creat ive Commo ns Attri bution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
Agricultural landscapes are increasingly characterized by intensification and habitat losses. Lan... more Agricultural landscapes are increasingly characterized by intensification and habitat losses. Landscape composition and configuration are known to mediate insect abundance and richness. In the context of global insect decline, and despite 75% of crops being dependent on insects, there is still a gap of knowledge about the link between pollinators and aromatic crops. Fennel (Foeniculum vulgare) is an aromatic plant cultivated in the South of France for its essential oil, which is of great economic interest. Using pan-traps, we investigated the influence of the surrounding habitats at landscape scale (semi-natural habitat proportion and vicinity, landscape configuration) and local scale agricultural practices (insecticides and patch size) on fennel-flower-visitor abundance and richness, and their subsequent impact on fennel essential oil yield. We found that fennel may to be a generalist plant species. We did not find any effect of intense local management practices on insect abundanc...
The SHARC Interest Group of the Research Data Alliance was established to improve research credit... more The SHARC Interest Group of the Research Data Alliance was established to improve research crediting and rewarding mechanisms for scientists who wish to organise their data (and material resources) for community sharing. This requires that data are findable and accessible on the Web, and comply with shared standards making them interoperable and reusable in alignment with the FAIR principles. It takes considerable time, energy, expertise and motivation. It is imperative to facilitate the processes to encourage scientists to share their data. To that aim, supporting FAIR principles compliance processes and increasing the human understanding of FAIRness criteria-i.e., promoting FAIRness literacy-and not only the machine-readability of the criteria, are critical steps in the data sharing process. Appropriate human-understandable criteria must be the first identified in the FAIRness assessment processes and roadmap. This paper reports on the lessons learned from the RDA SHARC Interest Group on identifying the processes required to prepare FAIR implementation in various communities not specifically data skilled, and on the procedures and training that must be deployed and adapted to each practice and level of understanding. These are essential milestones in developing adapted support and credit back mechanisms not yet in place.
Bee hotels are increasingly set up by land managers in public parks to promote wild bee populatio... more Bee hotels are increasingly set up by land managers in public parks to promote wild bee populations. However, we have very little evidence of the usefulness of bee hotels as tools to help the conservation of wild bees within cities. In this study, we installed 96 bee hotels in public parks of Marseille (France) for a year and followed their use as a nesting substrate by the local fauna. The most abundant species that emerged from bee hotels was the exotic bee species Megachile sculpturalis, representing 40% of all individuals. Moreover, we only detected four native bee species all belonging to the Osmia genus. More worryingly, we found a negative correlation between the occurrence of M. sculpturalis in bee hotels and the presence of native bees. One hypothesis to explain this result might be linked to the described territorial and aggressive behaviour of M. sculpturalis toward the nests built by the native fauna. This study raises the question about the usefulness of bee hotels for the conservation of native bees especially within cities harbouring high abundance of exotic bees. We provide here concrete advices to land managers to build bee hotels that can both host native bees and prevent the installation of M. sculpturalis.
Here we provide the ‘Global Spectrum of Plant Form and Function Dataset’, containing species mean... more Here we provide the ‘Global Spectrum of Plant Form and Function Dataset’, containing species mean values for six vascular plant traits. Together, these traits –plant height, stem specific density, leaf area, leaf mass per area, leaf nitrogen content per dry mass, and diaspore (seed or spore) mass – define the primary axes of variation in plant form and function. The dataset is based on ca. 1 million trait records received via the TRY database (representing ca. 2,500 original publications) and additional unpublished data. It provides 92,159 species mean values for the six traits, covering 46,047 species. The data are complemented by higher-level taxonomic classification and six categorical traits (woodiness, growth form, succulence, adaptation to terrestrial or aquatic habitats, nutrition type and leaf type). Data quality management is based on a probabilistic approach combined with comprehensive validation against expert knowledge and external information. Intense data acquisition a...
Functional and taxonomic typology of pine communities in Algiers and Oran areas (Algeria). Standa... more Functional and taxonomic typology of pine communities in Algiers and Oran areas (Algeria). Standard measurements of biodiversity, such as those based on species diversity and abundance, do not take into account the ecological and evolutionary characteristics of species per se, and provide us with an incomplete understanding of the causes and consequences of changes in biodiversity. Communities of Aleppo pines Pinus halepensis Mill. are under study in two Algerian phytogeographical areas : Algiers’ subhumid and humid bioclimate, and Oran’s semi-arid bioclimate. The purpose of this study is to analyse the floristic diversity of various communities of Aleppo pines, and to provide a typology based on twin approaches : a taxonomic analysis of the flora, and an analysis of the plants’ functional traits in these two areas. Correspondence factor analysis (CFA) has been conducted in both cases, and the results have been compared and discussed. The taxonomic analysis brings out contrasting ec...
Urbanisation is a growing phenomenon causing the decline of wild bees globally. Yet, bees manage ... more Urbanisation is a growing phenomenon causing the decline of wild bees globally. Yet, bees manage to persist in the urban matrix thanks to islands of vegetation in public parks and private gardens. While we begin to comprehend the impact of urbanisation on bees’ diversity and abundance, our understanding of its impact on the functional diversity of wild bees is limited. Here, we use an integrative approach to investigate the response of wild bees to urbanisation at the community, species, and individual levels. To do so, we sampled wild bees in 24 public parks along an urbanisation gradient in the Mediterranean city of Marseille. We found that species richness and abundance decreased in more urbanised areas, but increased in larger city parks. Moreover, larger individuals within species, but not larger species, were found in larger city parks, suggesting that park size is crucial for the persistence of bees in cities. Interestingly, we show that brighter species were found in parks s...
Phytosociological characterization of the vegetation of Gouraya National Park (Béjaïa, Algeria). ... more Phytosociological characterization of the vegetation of Gouraya National Park (Béjaïa, Algeria). Gouraya National Park covers a calcaro-dolomitic littoral solid mass and its silicicolous prolongation towards the west. It belongs to the regional hotspot of “Kabylies-Numidia-Kroumiria” but its vegetation was just partially explored. We try here a first synthesis under the phytosociological point of view. On the basis of 144 species and 56 floristic “relevés” submitted to factorial correspondence analysis and ascending hierarchical classification, the phytosociological study of Gouraya National Park highlighted seven vegetation groups attached to four phytosociological classes : the Quercetea ilicis Braun–Blanquet, 1947 and subordinated syntaxa, the Querco-Fagetea Braun–Blanquet & Vlieg, 1937 and subordinated syntaxa, and the Crithmo-limonietea Braun–Blanquet, 1947 and Asplenietea rupestris (H. M) Braun–Blanquet, 1934. We can note also the presence of species characteristic of the Rosm...
Summary. — Our aim was to ascertain whether changes in plant species richness and other vegetatio... more Summary. — Our aim was to ascertain whether changes in plant species richness and other vegetation features occur in heathland dominated by Erica scoparia L. (besom heath) through the impact of cattle grazing and oak colonization. Our study took place in the Brenne Regional Natural Park (center of France) where this ericaceous species, locally called ‘ brande’, is now considered of patrimonial interest and protected at regional and European level. We selected 10 sites in a private property, covering a wide range of ecological conditions (shallow and deep soils, grazed and non-grazed besom heath, pure and oak-colonized besom heath). Vegetation (percent occupancy of plant species) was sampled in May-June 2006 (105 samples, 1m2 each) and the impact of shrub and tree vegetation on plant biodiversity was assessed by correspondence analysis (CA) and total and partial Mantel tests (Monte-Carlo procedure). An environmental gradient of decreasing light incidence from grazed heath to old heat...
HAL (Le Centre pour la Communication Scientifique Directe), 2015
Functional and taxonomic typology of pine communities in Algiers and Oran areas (Algeria)-Standar... more Functional and taxonomic typology of pine communities in Algiers and Oran areas (Algeria)-Standard measurements of biodiversity, such as those based on species diversity and abundance, do not take into account the ecological and evolutionary characteristics of species per se, and provide us with an incomplete understanding of the causes and consequences of changes in biodiversity. Communities of Aleppo pines Pinus halepensis Mill. are under study in two Algerian phytogeographical areas: Algiers' subhumid and humid bioclimate, and Oran's semi-arid bioclimate. The purpose of this study is to analyse the floristic diversity of various communities of Aleppo pines, and to provide a typology based on twin approaches: a taxonomic analysis of the flora, and an analysis of the plants' functional traits in these two areas. Correspondence factor analysis (CFA) has been conducted in both cases, and the results have been compared and discussed. The taxonomic analysis brings out contrasting ecological descriptors (altitude, substrate, etc.) and explains the plants' distribution in relation to their environmental factors, but reveals no significant difference between the two areas under consideration. The functional analysis allowed for the identification of the main functional traits in each of the areas under study, and helped us define several functional groups in each case. A comparison of the results in both sectors shows that the organization of the Aleppo pine communities under consideration is principled upon phytogeographical, altitudinal, and disturbance gradients. Standard ecological factors evidenced by the taxonomic approach cannot single-handedly explain the dynamics of the communities; however, their functional traits have clarified and supplemented the flora's history in these two areas.
HAL (Le Centre pour la Communication Scientifique Directe), 2011
CaraCtérisation phytosoCiologique de la végétation du parC national de gouraya (Béjaïa, algérie) ... more CaraCtérisation phytosoCiologique de la végétation du parC national de gouraya (Béjaïa, algérie) Khellaf rebbas 1 , errol véla 2 , rachid gharzouli 3 , yamna djellouli 4 , djamel alatou 5 & sophie gachet 6 summary.-Phytosociological characterization of the vegetation of Gouraya National Park (Béjaïa, Algeria).-gouraya national park covers a calcaro-dolomitic littoral solid mass and its silicicolous prolongation towards the west. it belongs to the regional hotspot of "Kabylies-numidia-Kroumiria" but its vegetation was just partially explored. We try here a first synthesis under the phytosociological point of view. On the basis of 144 species and 56 floristic "relevés" submitted to factorial correspondence analysis and ascending hierarchical classification, the phytosociological study of Gouraya National Park highlighted seven vegetation groups attached to four phytosociological classes : the Quercetea ilicis Braun-Blanquet, 1947 and subordinated syntaxa, the Querco-Fagetea Braun-Blanquet & vlieg, 1937 and subordinated syntaxa, and the Crithmo-limonietea Braun-Blanquet, 1947 and Asplenietea rupestris (h.m) Braun-Blanquet, 1934. We can note also the presence of species characteristic of the Rosmarinetea officinalis Braun-Blanquet, 1947 em. rivas martinez, diaz, prieto, loidi & penas, 1991 and of Stellarietea mediae r. tX. lohmeyer & preising 1950. Within these groups, those assigned to Bupleuro-Euphorbietum dendroidis Géhu et al., 1992 can be divided in two subgroups, the typical sub-association and a new sub-association named here bupleuretosum plantaginei, characterized by the presence of rupicolous endemism. this study showed the peculiarity of the vegetation of this local biodiversity hotspot (important area for plants) and will be followed by a more in-depth study of the rupicolous littoral and sub-littoral vegetation of the area. résumé.-le parc national de gouraya recouvre un massif littoral calcaro-dolomitique et son prolongement silicicole vers l'ouest. Il appartient au point-chaud régional de « Kabylies-Numidie-Kroumirie » mais sa végétation n'a été que partiellement explorée. Nous tentons ici une première synthèse sous l'angle phytosociologique. Sur la base de 56 relevés floristiques et 144 espèces soumis à l'analyse factorielle des correspondances et à la classification hiérarchique ascendante, l'étude phytosociologique du parc national de Gouraya a mis en évidence sept groupements végétaux se rattachant à quatre classes phytosociologiques :
International audienceIn the last twenty years, several studies have stressed the importance of i... more International audienceIn the last twenty years, several studies have stressed the importance of including a historical approach in ecological studies. It helps understand structure and functioning of present ecosystems but also assess conservation objectives. In temperate regions, several studies showed that forest vascular plants differ according to forest temporal continuity. This difference is caused by a modification of forest habitats by past land use, especially soil physico-chemical properties, but is also conditioned by species colonisation potential. For instance, species more frequent in forests with a long temporal continuity, also known as ancient forest species, have life-history traits associated to poor dispersal abilities. However, the effect of past land use on the present flora has not yet been investigated in the Mediterranean. Our aim is thus to analyse floristic differences between ancient and recent forests and to identify life-history traits associated to thos...
http://www.iemss.org/sites/iemss2016/International audienceData produced by the SeasEra CIGESMED ... more http://www.iemss.org/sites/iemss2016/International audienceData produced by the SeasEra CIGESMED project (Coralligenous based Indicators to evaluate and monitor the "Good Environmental Status" of the MEDiterranean coastal waters) have a high potential to be used by several stakeholders involved in environmental management. A new consortium called IndexMed whose task is to index Mediterranean biodiversity data, makes it possible to build graphs in order to analyse the CIGESMED data and develop new ways for data mining of coralligenous data. This paper presents the prototypes under development that test the ability of graphs dataBases and tools to connect biodiversity objects with non-centralized data. This project explores the ability of two scientific communities to work together. The uses of data from coralligenous habitat demonstrate the prototype functionalities and introduce new perspectives to analyse environmental and societal responses.Les données produites par le p...
Data produced by the CIGESMED project (Coralligenous based Indicators to evaluate and monitor the... more Data produced by the CIGESMED project (Coralligenous based Indicators to evaluate and monitor the "Good Environmental Status" of the MEDiterranean coastal waters) have a high potential for use by several stakeholders involved in environmental management. A new consortium called IndexMed whose task is to index Mediterranean biodiversity data, makes it possible to build graphs in order to analyse the CIGESMED data and develop new ways for data mining of coralligenous data. This paper presents the prototypes under development that test the ability of graphs approach to connect biodiversity objects with non-centralized data. This project explores the ability of two scientific communities to work together. The uses of data from coralligenous habitat demonstrate the prototype functionalities and introduce new perspectives to analyse environmental and societal responses.
The SHARC Interest Group of the Research Data Alliance was established to improve research credit... more The SHARC Interest Group of the Research Data Alliance was established to improve research crediting and rewarding mechanisms for scientists who wish to organise their data (and material resources) for community sharing. This requires that data are findable and accessible on the Web, and comply with shared standards making them interoperable and reusable in alignment with the FAIR principles. It takes considerable time, energy, expertise and motivation. It is imperative to facilitate the processes to encourage scientists to share their data. To that aim, supporting FAIR principles compliance processes and increasing the human understanding of FAIRness criteria – i.e., promoting FAIRness literacy – and not only the machine-readability of the criteria, are critical steps in the data sharing process. Appropriate human-understandable criteria must be the first identified in the FAIRness assessment processes and roadmap. This document is a reusable template that aims to support FAIRifica...
These researches fit into the works coordinated by the Observatoire Hommes-Milieux (OHM) of Bassi... more These researches fit into the works coordinated by the Observatoire Hommes-Milieux (OHM) of Bassin Minier de Provence (BMP) and dedicated to vegetal covers and microbial communities of soils. They aim to study the terrestrial deposits of red muds resulting from past and current activities of alumina extraction. Despite the red muds have been extensively studied about their industrial recycling potentials (Klauber et al., 2011), the studies on their environmental effects, especially on the biological component of soils, are far less numerous (Garau et al., 2007, 2011, 2014; Krishna et al., 2014; Lombi et al., 2002) and, furthermore, lacking in the context of BMP. To this date, the various studies available in the literature emphasize the importance of the soil matrix in the modulation of biological responses when it is mixed with red muds. Therefore, this aspect is important to invest at the local scale in the prospect of a potential use of red muds as improvement to soils or to the ...
Data produced by biodiversity research projects that evaluate and monitor Good Environmental Stat... more Data produced by biodiversity research projects that evaluate and monitor Good Environmental Status have a high potential for use by stakeholders involved in [marine] environmental management. The lack of specific scientific objectives, poor organizational logic, and a characteristically disorganized collection of information leads to a decentralized data distribution, hampering environmental research. In such a heterogeneous system across different organizations and data formats, it is difficult to efficiently harmonize the outputs. There are few tools available to assist. The task of the newly created consortium of IndexMeed is to index biodiversity data (and to provide an index of qualified existing open datasets) and make it possible to build graphs to assist in the analysis and development of new ways to mine data. Standards (including TDWG recommendations) and specific protocols can be applied to interconnect databases. Such semantic approaches greatly increase data interopera...
Agricultural landscapes are more and more characterized by intensification and habitat losses. La... more Agricultural landscapes are more and more characterized by intensification and habitat losses. Landscape composition and configuration are known to mediate insect abundance and richness. In the context of global insect decline, and despite 75% of crops being under insect’s dependence, there is still a gap of knowledge about the link between pollinators and aromatic crops. Fennel (Foeniculum vulgare) is an aromatic plant cultivated in South of France, for its essential oil which is of great economic interest. Using pan-traps, we investigated the influence of the surrounding habitats at landscape scale (semi-natural habitat proportion and vicinity, landscape configuration) and local scale agricultural practices (insecticides and patch size) on fennel-flower-visitor abundance and richness and their subsequent impact on fennel essential oil yield. We found that fennel may to be a generalist plant species. We did not find any effect of intense local management practices on insect abundan...
This is an open access article under the terms of the Creat ive Commo ns Attri bution License, wh... more This is an open access article under the terms of the Creat ive Commo ns Attri bution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
Agricultural landscapes are increasingly characterized by intensification and habitat losses. Lan... more Agricultural landscapes are increasingly characterized by intensification and habitat losses. Landscape composition and configuration are known to mediate insect abundance and richness. In the context of global insect decline, and despite 75% of crops being dependent on insects, there is still a gap of knowledge about the link between pollinators and aromatic crops. Fennel (Foeniculum vulgare) is an aromatic plant cultivated in the South of France for its essential oil, which is of great economic interest. Using pan-traps, we investigated the influence of the surrounding habitats at landscape scale (semi-natural habitat proportion and vicinity, landscape configuration) and local scale agricultural practices (insecticides and patch size) on fennel-flower-visitor abundance and richness, and their subsequent impact on fennel essential oil yield. We found that fennel may to be a generalist plant species. We did not find any effect of intense local management practices on insect abundanc...
The SHARC Interest Group of the Research Data Alliance was established to improve research credit... more The SHARC Interest Group of the Research Data Alliance was established to improve research crediting and rewarding mechanisms for scientists who wish to organise their data (and material resources) for community sharing. This requires that data are findable and accessible on the Web, and comply with shared standards making them interoperable and reusable in alignment with the FAIR principles. It takes considerable time, energy, expertise and motivation. It is imperative to facilitate the processes to encourage scientists to share their data. To that aim, supporting FAIR principles compliance processes and increasing the human understanding of FAIRness criteria-i.e., promoting FAIRness literacy-and not only the machine-readability of the criteria, are critical steps in the data sharing process. Appropriate human-understandable criteria must be the first identified in the FAIRness assessment processes and roadmap. This paper reports on the lessons learned from the RDA SHARC Interest Group on identifying the processes required to prepare FAIR implementation in various communities not specifically data skilled, and on the procedures and training that must be deployed and adapted to each practice and level of understanding. These are essential milestones in developing adapted support and credit back mechanisms not yet in place.
Bee hotels are increasingly set up by land managers in public parks to promote wild bee populatio... more Bee hotels are increasingly set up by land managers in public parks to promote wild bee populations. However, we have very little evidence of the usefulness of bee hotels as tools to help the conservation of wild bees within cities. In this study, we installed 96 bee hotels in public parks of Marseille (France) for a year and followed their use as a nesting substrate by the local fauna. The most abundant species that emerged from bee hotels was the exotic bee species Megachile sculpturalis, representing 40% of all individuals. Moreover, we only detected four native bee species all belonging to the Osmia genus. More worryingly, we found a negative correlation between the occurrence of M. sculpturalis in bee hotels and the presence of native bees. One hypothesis to explain this result might be linked to the described territorial and aggressive behaviour of M. sculpturalis toward the nests built by the native fauna. This study raises the question about the usefulness of bee hotels for the conservation of native bees especially within cities harbouring high abundance of exotic bees. We provide here concrete advices to land managers to build bee hotels that can both host native bees and prevent the installation of M. sculpturalis.
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Papers by Sophie Gachet