Consulta: subjectFacets:"Functional diversity"
Registros recuperados: 31
Data/hora: 08/06/2024 16:28:39

Quantifying Biodiversity for Building Resilience for Food Security in Urban Landscapes:  Getting Down to Business
Provedor de dados: 7
Autores: Polasky, Steven; Department of Applied Economics, University of Minnesota ; polasky@umn.edu.
A steady stream of ecosystem services is essential for human welfare and survival, and it has been convincingly shown that these flows are being eroded. Compelling theoretical knowledge about essential connections between ecosystem service generation, biodiversity, and resilience in social-ecological systems already exists; however, we still, to a great extent, lack spatially explicit quantitative assessments for translating this theoretical knowledge into practice. We propose an approach for measuring the change in flow and resilience of a regulating ecosystem service on a landscape scale over time when the landscape is exposed to both land use change due to urban expansion, and change in a large-scale economic driver.  Our results quantitatively show...
Tipo: Peer-Reviewed Reports
Palavras-chave: Ecosystem services; Food security; Functional diversity; Pollination; Resilience; Response diversity; Urban ecology.
Ano: 2010

Evaluation of soil-microbial communities by their CLPP: Standardization of a laboratory technique to replace commercial available microplates
Provedor de dados: 67
Autores: Di Salvo,Luciana P.; García De Salamone,Inés E.
Variation of soil-microbial communities are good bioindicators of human impacts in soils, such as different soils management or contamination. Considering that traditional methods of isolation and taxonomic analysis do not consider the functionality of the microbial community, Community-Level Physiological Profiles (CLPP) emerged as a complementary methodology to study microbial communities. Several studies have shown that Biolog® EcoPlates® are very useful for determining physiological differences between communities from different samples. However, commercial microplates have some disadvantages which led us to the idea of replacing them by microplates prepared in the laboratory (Laboratory's). Here, we compared both types of microplates using soil...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Carbon-source utilization; Community-level physiological profiles; Functional diversity; Metabolic profiles.
Ano: 2012
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1667-782X2012000200006

FishMed: traits, phylogeny, current and projected species distribution of Mediterranean fishes, and environmental data
Provedor de dados: 5
Autores: Albouy, Camille; Lasram, Frida Ben Rais; Velez, Laure; Guilhaumon, François; Meynard, Christine N.; Boyer, Séverine; Benestan, Laura; Mouquet, Nicolas; Douzery, Emmanuel; Aznar, Roland; Troussellier, Marc; Somot, Samuel; Leprieur, Fabien; Le Loc'H, François; Mouillot, David.
The FishMed database provides traits, phylogeny, current and projected species distribution of Mediterranean fishes, and associated sea surface temperature (SST) from the regional oceanic model NEMOMED8. Data for the current geographical distributions of 635 Mediterranean fish species were compiled from a published expert knowledge atlas of fishes of the northern Atlantic and the Mediterranean (FNAM) edited between 1984 and 1986 and from an updated exotic fish species list. Two future sets of projected species distributions were obtained for the middle and end of the 21st century by using an ensemble forecasting approach for 288 coastal Mediterranean fish species based on SST according to the IPPC/SRES A2 scenario implemented with the Mediterranean...
Tipo: Text
Palavras-chave: Climate change; Coastal fishes; Functional diversity; Mediterranean fish species; Mediterranean Sea; NEMOMED8; Phylogenetic diversity; Species distribution models; Taxonomic diversity.
Ano: 2015
URL: https://archimer.ifremer.fr/doc/00371/48216/48341.pdf

Multifaceted biodiversity hotspots of marine mammals for conservation priorities
Provedor de dados: 5
Autores: Albouy, Camille; Delattre, Valentine L.; Merigot, Bastien; Meynard, Christine N.; Leprieur, Fabien.
Aim Identifying the multifaceted biodiversity hotspots for marine mammals and their spatial overlap with human threats at the global scale. Location World-wide. Methods We compiled a functional trait database for 121 species of marine mammals characterized by 14 functional traits grouped into five categories. We estimated marine mammal species richness (SR) as well as functional (FD) and phylogenetic diversity (PD) per grid cell (1° × 1°) using the FRic index (a measure of trait diversity as the volume of functional space occupied by the species present in an assemblage) and the PD index (the amount of evolutionary history represented by a set of species), respectively. Finally, we assessed the spatial congruence of these three facets of biodiversity...
Tipo: Text
Palavras-chave: Conservation; Functional diversity; Marine mammals; Phylogenetic diversity.
Ano: 2017
URL: https://archimer.ifremer.fr/doc/00385/49662/51084.pdf

Musical Chairs on Temperate Reefs: Species Turnover and Replacement Within Functional Groups Explain Regional Diversity Variation in Assemblages Associated With Honeycomb Worms
Provedor de dados: 5
Autores: Muller, Alexandre; Poitrimol, Camille; Nunes, Flavia; Boye, Aurelien; Curd, Amelia; Desroy, Nicolas; Firth, Louise B; Bush, Laura; Davies, Andrew J; Lima, Fernando P; Marzloff, Martin; Meneghesso, Claudia; Seabra, Rui; Dubois, Stanislas.
Reef-building species are recognized as having an important ecological role and as generally enhancing the diversity of benthic organisms in marine habitats. However, although these ecosystem engineers have a facilitating role for some species, they may exclude or compete with others. The honeycomb worm Sabellaria alveolata (Linnaeus, 1767) is an important foundation species, commonly found from northwest Ireland to northern Mauritania, whose reef structures increase the physical complexity of the marine benthos, supporting high levels of biodiversity. Local patterns and regional differences in taxonomic and functional diversity were examined in honeycomb worm reefs from 10 sites along the northeastern Atlantic to explore variation in diversity across...
Tipo: Text
Palavras-chave: Biodiversity; Taxonomic diversity; Functional diversity; Ecosystem engineer; Reef; Turnover.
Ano: 2021
URL: https://archimer.ifremer.fr/doc/00693/80506/83709.pdf

Effets ingénieurs auto- et allogénique de l’espèce invasive Crepidula fornicata (Linnaeus, 1758) sur la diversité structurelle et fonctionnelle des habitats benthiques colonisés de la rade de Brest
Provedor de dados: 5
Autores: Vallee, Vincent.
The non-native slipper limpet Crepidula fornicata (Linnaeus, 1758) has proliferated in the Bay of Brest during the 90s. This suspension-feeding gastropod has become a dominant species both in terms of density (&gt; 2000 ind.m-2) and biomass (127 000 t fresh weight in 2000). C. fornicata is also an ecosystem engineer that modifies its habitat by the presence of its own shell (autogenic engineering) and by biodeposition of faeces and pseudo-faeces (allogenic engineering). Here, we tested the effects of C. fornicata on the colonized communities’ structural and functional diversity by distinguishing his auto- and allogenic engineering effects. One way these changes were studied along a gradient characterized by the total weight of slipper limpet (dead and...
Tipo: Text
Palavras-chave: Crepidula fornicata; Espèce ingénieur; Diversité structurelle; Diversité fonctionnelle; Analyse des traits biologiques; Rade de Brest; Crepidula fornicata; Ecosystem engineer; Structural diversity; Functional diversity; Biological traits analysis; Bay of Brest.
Ano: 2016
URL: http://archimer.ifremer.fr/doc/00368/47920/47949.pdf

Assessing functional diversity: the influence of the number of the functional traits
Provedor de dados: 5
Autores: Legras, Gaëlle; Loiseau, Nicolas; Gaertner, Jean-claude; Poggiale, J-c.; Gaertner-mazouni, N.
The impact of the variation of the number of functional traits on functional diversity assessment is still poorly known. Although the covariation between these two parameters may be desirable in some situations (e.g. if adding functional traits provides relevant new functional information), it may also result from mathematical artefacts and lead to misinterpretation of the results obtained. Here, we have tested the behaviour of a set of nine indices widely used for assessing the three main components of functional diversity (i.e. functional richness, evenness and divergence), according to the variation in the number of functional traits. We found that the number of functional traits may strongly impact the values of most of the indices considered, whatever...
Tipo: Text
Palavras-chave: Functional traits; Dissimilarity metric; Functional diversity; Index sensitivity; Trend analysis.
Ano: 2020
URL: https://archimer.ifremer.fr/doc/00503/61438/65561.pdf

Mare Incognitum: A Glimpse into Future Plankton Diversity and Ecology Research
Provedor de dados: 5
Autores: Chust, Guillem; Vogt, Meike; Benedetti, Fabio; Nakov, Teofil; Villeger, Sebastien; Aubert, Anais; Vallina, Sergio M.; Righetti, Damiano; Not, Fabrice; Biard, Tristan; Bittner, Lucie; Benoiston, Anne-sophie; Guidi, Lionel; Villarino, Ernesto; Gaborit, Charlie; Cornils, Astrid; Buttay, Lucie; Irisson, Jean-olivier; Chiarello, Marlene; Vallim, Alessandra L.; Blanco-bercial, Leocadio; Basconi, Laura; Guilhaumon, Francois; Ayata, Sakina-dorothee.
With global climate change altering marine ecosystems, research on plankton ecology is likely to navigate uncharted seas. Yet, a staggering wealth of new plankton observations, integrated with recent advances in marine ecosystem modeling, may shed light on marine ecosystem structure and functioning. A EuroMarine foresight workshop on the “Impact of climate change on the distribution of plankton functional and phylogenetic diversity” (PlankDiv) identified five grand challenges for future plankton diversity and macroecology research: (1) What can we learn about plankton communities from the new wealth of high-throughput “omics” data? (2) What is the link between plankton diversity and ecosystem function? (3) How can species distribution models be adapted to...
Tipo: Text
Palavras-chave: Plankton; Macroecology; Species distribution; Functional diversity; Climate change; Habitat modeling.
Ano: 2017
URL: https://archimer.ifremer.fr/doc/00625/73739/74755.pdf

Alternatives to taxonomic-based approaches to assess changes in transitional water communities
Provedor de dados: 5
Autores: Mouillot, D; Spatharis, S; Reizopoulou, S; Laugier, Thierry; Sabetta, L; Basset, A; Chi, T.
1. Transitional waters, described as critical transition zones because of their position at terrestrial, freshwater and marine interfaces, provide essential goods and services to the biosphere including human populations. These ecotones face increasing human influence mainly due to population density increase in coastal areas.   2. Transitional water bodies have, to date, received little attention in the development of ecological status indicators, this is a critical deficiency when trying to meet the Water Framework Directive objective of all significant water bodies achieving good ecological status by the year 2015.   3. In order to assess changes in transitional water communities many taxonomic-based indicators have already been proposed but there are a...
Tipo: Text
Palavras-chave: Biotic descriptors; Productivity; Functional diversity; Functional traits; Body size; Water Framework Directive WFD.
Ano: 2006
URL: http://archimer.ifremer.fr/doc/2006/publication-1849.pdf

Chronic Polyaromatic Hydrocarbon (PAH) Contamination Is a Marginal Driver for Community Diversity and Prokaryotic Predicted Functioning in Coastal Sediments
Provedor de dados: 5
Autores: Jeanbille, Mathilde; Gury, Jérôme; Duran, Robert; Tronczynski, Jacek; Ghiglione, Jean-françois; Agogué, Hélène; Saïd, Olfa Ben; Taïb, Najwa; Debroas, Didier; Garnier, Cédric; Auguet, Jean-christophe.
Benthic microorganisms are key players in the recycling of organic matter and recalcitrant compounds such as polyaromatic hydrocarbons (PAHs) in coastal sediments. Despite their ecological importance, the response of microbial communities to chronic PAH pollution, one of the major threats to coastal ecosystems, has received very little attention. In one of the largest surveys performed so far on coastal sediments, the diversity and composition of microbial communities inhabiting both chronically contaminated and non-contaminated coastal sediments were investigated using high-throughput sequencing on the 18S and 16S rRNA genes. Prokaryotic alpha-diversity showed significant association with salinity, temperature, and organic carbon content. The effect of...
Tipo: Text
Palavras-chave: Microbial communities; PAH; Chronic contamination; Coastal sediment; Functional diversity.
Ano: 2016
URL: http://archimer.ifremer.fr/doc/00347/45854/45522.pdf

Climate change may have minor impact on zooplankton functional diversity in the Mediterranean Sea
Provedor de dados: 5
Autores: Benedetti, Fabio; Ayata, Sakina-dorothee; Irisson, Jean-olivier; Adloff, Fanny; Guilhaumon, Francois.
Aim To assess the impact of climate change on the functional diversity of marine zooplankton communities. Location The Mediterranean Sea. Methods We used the functional traits and geographic distributions of 106 copepod species to estimate the zooplankton functional diversity of Mediterranean surface assemblages for the 1965-1994 and 2069-2098 periods. Multiple environmental niche models were trained at the global scale to project the species habitat suitability in the Mediterranean Sea and assess their sensitivity to climate change predicted by several scenarios. Simultaneously, the species traits were used to compute a functional dendrogram from which we identified seven functional groups and estimated functional diversity through Faith's index. We...
Tipo: Text
Palavras-chave: Climate change; Functional diversity; Mediterranean Sea; Niche modelling; Null model; Zooplankton.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00490/60118/63460.pdf

Functional gains of including non-commercial epibenthic taxa in coastal beam trawl surveys: A note
Provedor de dados: 5
Autores: Brind'Amour, Anik; Rouyer, Armelle; Martin, Jocelyne.
The development of ecosystem-based indicators requires the broadening of a view of the community, from fish species to all the species (macrobenthic and fish) correctly captured by a given sampling gear. Many scientific surveys already have such integrated databases. The present note aims to demonstrate that existing databases, herein from dedicated coastal nursery surveys, are actually underexploited. Such databases contain information on non-commercial taxa, which could greatly improve our knowledge on the organisation and functioning of coastal ecosystems. Using two datasets, a "complete" dataset composed of commercial and not-commercial epibenthic trawled species (fish and invertebrate) and a "subset" dataset characterized by commercial and routinely...
Tipo: Text
Palavras-chave: Nursery grounds; Functional diversity; Fish community; Coastal surveys; Beam trawl; Bay of Biscay.
Ano: 2009
URL: http://archimer.ifremer.fr/doc/2009/publication-6507.pdf

Functional differences between fish communities on artificial and natural reefs: a case study along the French Catalan coast
Provedor de dados: 5
Autores: Koeck, Barbara; Tessier, Anne; Brind'Amour, Anik; Pastor, Jeremy; Bijaoui, Benjamin; Dalias, Nicolas; Astruch, Patrick; Saragoni, Gilles; Lenfant, Philippe.
In the context of growing anthropogenic disturbances that deeply alter marine coastal ecosystems, various management tools are used to protect biodiversity, such as fishing gear limitations, fishing quotas, protected areas or the creation of artificial reefs (ARs). In contrast to the other management tools, ARs require a modification of natural habitats. We used underwater visual censuses to investigate the effect of habitat modification on the structure of fish communities by comparing a natural reef (NR) to ARs with different habitat complexity. Different fish assemblage descriptors were used to assess species- and functional- and community-level aspects of the assemblages. ARs were rapidly colonized by adult fishes and presented community compositions...
Tipo: Text
Palavras-chave: Ecological niche; Fish community; Fisheries management; Functional diversity; Gulf of Lion; Habitat complexity; Mediterranean Sea; Underwater visual census.
Ano: 2014
URL: https://archimer.ifremer.fr/doc/00189/30029/28514.pdf

An attribute-diversity approach to functional diversity, functional beta diversity, and related (dis)similarity measures
Provedor de dados: 5
Autores: Chao, Anne; Chiu, Chun-huo; Villéger, Sébastien; Sun, I-fang; Thorn, Simon; Lin, Yi-ching; Chiang, Jyh-min; Sherwin, William B.
Based on the framework of attribute diversity (a generalization of Hill numbers of order q), we develop a class of functional diversity measures sensitive not only to species abundances but also to trait‐based species‐pairwise functional distances. The new method refines and improves on the conventional species‐equivalent approach in three areas: (1) the conventional method often gives similar values (close to unity) to assemblages with contrasting levels of functional diversity; (2) when a distance metric is unbounded, the conventional functional diversity depends on the presence/absence of other assemblages in the study; (3) in partitioning functional gamma diversity into alpha and beta components, the conventional gamma is sometimes less than alpha. To...
Tipo: Text
Palavras-chave: Attribute diversity; Diversity decomposition; Functional (dis)similarity; Functional beta diversity; Functional diversity; Hill numbers; Quadratic entropy; Species diversity; Species traits; Trait diversity.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00489/60082/63408.pdf

Dominance of individual plant species is more important than diversity in explaining plant biomass in the forest understorey
Provedor de dados: 5
Autores: Wasof, Safaa; Lenoir, Jonathan; Hattab, Tarek; Jamoneau, Aurelien; Gallet-moron, Emilie; Ampoorter, Evy; Saguez, Robert; Bennsadek, Lamine; Bertrand, Romain; Valdes, Alicia; Verheyen, Kris; Decocq, Guillaume.
Questions How does plant community diversity influence variation in plant biomass? There are two competing hypotheses: the ‘biomass‐ratio hypothesis’, where biomass is influenced by the abundance and traits of the most dominant species, and the ‘diversity hypothesis’, where the diversity of organisms influences biomass through mechanisms such as niche complementarity. However, no studies have tested which one of these two hypotheses better explains the variation in plant biomass in the forest understorey. Location Temperate deciduous forests in Northern France. Methods For the forest understorey, we assessed species diversity and biomass as well as soil and light conditions in 133 forest plots of 100m² each. Using mixed‐effect models and after controlling...
Tipo: Text
Palavras-chave: Biodiversity; Biomass; Biomass ratio hypothesis; Forest understorey; Functional diversity; Ivy; Phylogeny; Production.
Ano: 2018
URL: https://archimer.ifremer.fr/doc/00433/54441/55799.pdf

An intimate link between antimicrobial peptide sequence diversity and binding to essential components of bacterial membranes
Provedor de dados: 5
Autores: Schmitt, Paulina; Rosa, Rafael D.; Destoumieux-garzon, Delphine.
Antimicrobial peptides and proteins (AMPs) are widespread in the living kingdom. They are key effectors of defense reactions and mediators of competitions between organisms. They are often cationic and amphiphilic, which favors their interactions with the anionic membranes of microorganisms. Several AMP families do not directly alter membrane integrity but rather target conserved components of the bacterial membranes in a process that provides them with potent and specific antimicrobial activities. Thus, lipopolysaccharides (LPS), lipoteichoic acids (LTA) or the peptidoglycan precursor Lipid II are targeted by a broad series of AMPs. Studying the functional diversity of immune effectors tells us about the essential residues involved in AMP mechanism of...
Tipo: Text
Palavras-chave: Functional diversity; Defensin; Anti-lipopolysaccharide factor; Mechanism of action; Resistance.
Ano: 2016
URL: http://archimer.ifremer.fr/doc/00286/39710/38165.pdf

Massive Gene Expansion and Sequence Diversification Is Associated with Diverse Tissue Distribution, Regulation and Antimicrobial Properties of Anti-Lipopolysaccharide Factors in Shrimp
Provedor de dados: 5
Autores: Matos, Gabriel Machado; Schmitt, Paulina; Barreto, Caire; Farias, Natanael Dantas; Toledo-silva, Guilherme; Guzman, Fanny; Destoumieux Garzon, Delphine; Perazzolo, Luciane Maria; Rosa, Rafael Diego.
Anti-lipopolysaccharide factors (ALFs) are antimicrobial peptides with a central β-hairpin structure able to bind to microbial components. Mining sequence databases for ALFs allowed us to show the remarkable diversity of ALF sequences in shrimp. We found at least seven members of the ALF family (Groups A to G), including two novel Groups (F and G), all of which are encoded by different loci with conserved gene organization. Phylogenetic analyses revealed that gene expansion and subsequent diversification of the ALF family occurred in crustaceans before shrimp speciation occurred. The transcriptional profile of ALFs was compared in terms of tissue distribution, response to two pathogens and during shrimp development in Litopenaeus vannamei, the most...
Tipo: Text
Palavras-chave: Host defense peptide; Antimicrobial peptide; Anti-LPS factor; Hostmicrobe relationship; Functional diversity; Invertebrate immunity; Crustacean; Antimicrobial activity.
Ano: 2018
URL: https://archimer.ifremer.fr/doc/00464/57523/59711.pdf

Trait‐based approach to monitoring marine benthic data along 500 km of coastline
Provedor de dados: 5
Autores: Boyé, Aurelien; Thiébaut, Éric; Grall, Jacques; Legendre, Pierre; Broudin, Caroline; Houbin, Céline; Le Garrec, Vincent; Maguer, Marion; Droual, Gabin; Gauthier, Olivier.
Aim β diversity and its linkages with ecosystem functioning remain poorly documented. This impedes our capacity to predict biodiversity changes and how they affect ecosystem functioning at scales relevant for conservation. Here, we address the functional implications of ongoing seafloor changes by characterizing at regional scale the taxonomic and functional α and β diversities of benthic habitats currently threatened by biotic homogenization. Location Western Europe. Methods Combining a trait‐based approach to benthic community monitoring data covering a 7‐year period and 500 km of coast, we explored the mechanisms governing community assembly in habitats associated with two types of foundation species, intertidal seagrass and subtidal maerl beds,...
Tipo: Text
Palavras-chave: Beta diversity; Biotic homogenization; Broad-scale monitoring; Community assembly; Coralline algae; Ecosystem engineers; Functional diversity; Zostera marina.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00515/62688/67074.pdf

Response and Effect Traits of Coral Reef Fish
Provedor de dados: 5
Autores: Hadj-hammou, Jeneen; Mouillot, David; Graham, Nicholas A. J.
The response-and-effect framework is a trait-based approach that seeks to break down the mechanistic links between ecosystem disturbances, species' traits, and ecosystem processes. We apply this framework to a review of the literature on coral reef fish traits, in order to illustrate the research landscape and structure a path forward for the field. Traits were categorized into five broad groupings: behavioral, life history, morphological, diet, and physiological. Overall, there are fewer studies linking effect traits to ecosystem processes (number of papers on herbivory, n = 14; predation, n = 12; bioerosion, n = 2; nutrient cycling, n = 0) than there are linking response traits to disturbances (climate change, n = 26; fishing, n = 20; pollution, n = 4)....
Tipo: Text
Palavras-chave: Ecosystem processes; Environmental disturbances; Functional diversity; Coral reef ecology; Ecosystem function; Trait-based ecology; Systematic review.
Ano: 2021
URL: https://archimer.ifremer.fr/doc/00688/79975/82919.pdf

Microbial functional diversity: From concepts to applications
Provedor de dados: 5
Autores: Escalas, Arthur; Hale, Lauren; Voordeckers, James W.; Yang, Yunfeng; Firestone, Mary K.; Alvarez‐cohen, Lisa; Zhou, Jizhong.
Functional diversity is increasingly recognized by microbial ecologists as the essential link between biodiversity patterns and ecosystem functioning, determining the trophic relationships and interactions between microorganisms, their participation in biogeochemical cycles, and their responses to environmental changes. Consequently, its definition and quantification have practical and theoretical implications. In this opinion paper, we present a synthesis on the concept of microbial functional diversity from its definition to its application. Initially, we revisit to the original definition of functional diversity, highlighting two fundamental aspects, the ecological unit under study and the functional traits used to characterize it. Then, we discuss how...
Tipo: Text
Palavras-chave: Functional diversity; Functional traits; Microbial communities; Theoretical frameworks of diversity; Trait-based ecology.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00584/69631/67487.pdf

Diversité structurelle et fonctionnelle des peuplements sablo-vaseux de Bretagne sud : Impact de l'expansion d'Haploops nirae
Provedor de dados: 5
Autores: Rigolet, Carine.
This thesis aims here, based on the case of the Bay of Concarneau, to understand the impact of the development of dense populations of the tubiculous amphipod Haploops nirae on the structural and functional diversity of sandy-mud communities of South Brittany. The study of Haploops communities was developed on various levels of organization of life, from the specific role of Haploops nirae to functional role of Haploops community in the ecosystem passing through the description of the community composition and its role on the biodiversity. Our results suggest firstly that the functional role of Haploops nirae alone (filtration pressure, secondary production) is potentially important. Moreover, the physical changes induced by Haploops were found to have...
Tipo: Text
Palavras-chave: Ampeliscidae; Réseau trophique; Diversité fonctionnelle; Macrofaune benthique; Diversité; Bretagne Sud; Espèce ingénieure; Ampeliscidae; Benthic macrofauna diversity; Food web; Functional diversity; Engineer species; South Brittany.
Ano: 2013
URL: http://archimer.ifremer.fr/doc/00134/24549/22582.pdf

Trait structure and redundancy determine sensitivity to disturbance in marine fish communities
Provedor de dados: 5
Autores: Mclean, Matthew; Auber, Arnaud; Graham, Nicholas A J; Houk, Peter; Villéger, Sébastien; Violle, Cyrille; Thuiller, Wilfried; Wilson, Shaun K.; Mouillot, David.
‘Functional’ diversity is believed to influence ecosystem dynamics through links between organismal traits and ecosystem processes. Theory predicts that key traits and high trait redundancy – large species richness and abundance supporting the same traits – can buffer communities against environmental disturbances. While experiments and data from simple ecological systems lend support, large‐scale evidence from diverse, natural systems under major disturbance is lacking. Here, using long‐term data from both temperate (English Channel) and tropical (Seychelles Islands) fishes, we show that sensitivity to disturbance depends on communities’ initial trait structure and initial trait redundancy. In both ecosystems, we found that increasing dominance by...
Tipo: Text
Palavras-chave: Climate change; Coral reefs; Diversity stability; Ecological traits; Ecosystem functioning; English Channel; Functional diversity.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00490/60184/63525.pdf

Building functional groups of marine benthic macroinvertebrates on the basis of general community assembly mechanisms
Provedor de dados: 5
Autores: Alexandridis, Nikolaos; Bacher, Cedric; Desroy, Nicolas; Jean, Fred.
The accurate reproduction of the spatial and temporal dynamics of marine benthic biodiversity requires the development of mechanistic models, based on the processes that shape macroinvertebrate communities. The modelled entities should, accordingly, be able to adequately represent the many functional roles that are performed by benthic organisms. With this goal in mind, we applied the emergent group hypothesis (EGH), which assumes functional equivalence within and functional divergence between groups of species. The first step of the grouping involved the selection of 14 biological traits that describe the role of benthic macroinvertebrates in 7 important community assembly mechanisms. A matrix of trait values for the 240 species that occurred in the Rance...
Tipo: Text
Palavras-chave: Assembly mechanisms; Benthic communities; Biological traits; Emergent groups; Functional diversity; Functional redundancy.
Ano: 2017
URL: http://archimer.ifremer.fr/doc/00369/47975/48000.pdf

Rebound in functional distinctiveness following warming and reduced fishing in the North Sea
Provedor de dados: 5
Autores: Murgier, Juliette; Mclean, Matthew; Maire, Anthony; Mouillot, David; Loiseau, Nicolas; Munoz, François; Violle, Cyrille; Auber, Arnaud.
Functionally distinct species (i.e. species with unique trait combinations in the community) can support important ecological roles and contribute disproportionately to ecosystem functioning. Yet, how functionally distinct species have responded to recent climate change and human exploitation has been widely overlooked. Here, using ecological traits and long-term fish data in the North Sea, we identified functionally distinct and functionally common species, and evaluated their spatial andtemporaldynamics in relation to environmental variables and fishing pressure. Functionally distinct specieswere characterized by late sexualmaturity, few, large offspring, and high parental care,many being sharks and skates that play critical roles in structuring food...
Tipo: Text
Palavras-chave: Functional diversity; Ecological trait; Fisheries; Global change; Ecosystem functioning; Conservation.
Ano: 2021
URL: https://archimer.ifremer.fr/doc/00668/78019/80270.pdf

TRY – a global database of plant traits
Provedor de dados: 16
Autores: Kattge, J.; Lens, F.
Plant traits – the morphological, anatomical, physiological, biochemical and phenological characteristics of plants and their organs – determine how primary producers respond to environmental factors, affect other trophic levels, influence ecosystem processes and services and provide a link from species richness to ecosystem functional diversity. Trait data thus represent the raw material for a wide range of research from evolutionary biology, community and functional ecology to biogeography. Here we present the global database initiative named TRY, which has united a wide range of the plant trait research community worldwide and gained an unprecedented buy-in of trait data: so far 93 trait databases have been contributed. The data repository currently...
Tipo: Article / Letter to the editor
Palavras-chave: Comparative ecology; Database; Environmental gradient; Functional diversity; Global analysis; Global change; Interspecific variation; Intraspecific variation; Plant attribute; Plant functional type; Plant trait; Vegetation model; 42.44.
Ano: 2011
URL: http://www.repository.naturalis.nl/record/423730

Functional differentiation between fish assemblages from forested and deforested streams
Provedor de dados: 83
Autores: Teresa,Fabrício Barreto; Casatti,Lilian; Cianciaruso,Marcus Vinicius.
We tested the hypothesis that streams in deforested areas shelter different fish communities to nearby forested areas, and that these disparities are due to environmental parameters that limit or benefit different species according to their functional traits. We compared the community composition of three south east Brazilian streams flanked by riparian forest with three nearby streams in deforested areas. The following functional traits were considered: diet, habitat use, water flow preference, size, and hypoxia tolerance. Differentiation between forested and deforested streams corresponded with the different contributions of three functional groups. Species reported in the literature to be hypoxia tolerant, and exhibiting a variable combination of the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Community ecology; Deforestation; Functional diversity; Traits.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252015000200361

Fish complementarity is associated to forests in Amazonian streams
Provedor de dados: 83
Autores: Bordignon,Carolina Rodrigues; Casatti,Lilian; Pérez-Mayorga,María Angélica; Teresa,Fabrício Barreto; Brejão,Gabriel Lourenço.
The functional structure of communities is commonly measured by the variability in functional traits, which may demonstrate complementarity or redundancy patterns. In this study, we tested the influence of environmental variables on the functional structure of fish assemblages in Amazonian streams within a deforestation gradient. We calculated six ecomorphological traits related to habitat use from each fish species, and used them to calculate the net relatedness index (NRI) and the nearest taxon index (NTI). The set of species that used the habitat differently (complementary or overdispersed assemblages) occurred in sites with a greater proportion of forests. The set of species that used the habitat in a similar way (redundant or clustered assemblages)...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amazon Forest; Conservation; Ecomorphology; Functional diversity; Habitat use.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252015000300579

Functional groups in areas with fire history in a savanna area in Brazilian Federal District
Provedor de dados: 190
Autores: Rios, Mary Naves da Silva; Sousa-Silva, José Carlos.
This study aimed to evaluate the formation of functional groups, in 1994 and 2012, in two areas of savanna with different fire history in Planaltina, Federal District, Brazil. In the Area 1 biennial burnings were applied in August 1988, 1990 and 1992; there was fire protection until July 1994 in the Area 2, the control area. Accidental fire occurred in both areas in August 1994, but from September 1994 to 2012 they were protected. These analysis included individuals with abundance ≥ 5 using the unweighted pair group method with arithmetic mean (UPGMA). The groups were defined according to the following attributes: dispersal and pollination syndromes, leaf phenology, life form, type of bark and ability to sprouting after fire. Both areas presented...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Functional diversity; Sprouting; Forest rehabilitation Ciências agrárias; Recursos Florestais; Botânica; Ecologia Diversidade funcional; Rebrota; Reabilitação florestal.
Ano: 2017
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/1386

The invasive white ginger lily ( Hedichium coronarium ) simplifies the trait composition of an insect assemblage in the littoral zone of a Savanna reservoir
Provedor de dados: 92
Autores: Saulino,Hugo Henrique Lanzi; Trivinho-Strixino,Susana.
ABSTRACT The invasive white ginger lily (Hedichium coronarium - J. Köenig, 1783) simplifies the trait composition of an insect assemblage in the littoral zone of a Savanna reservoir. Invasive plants are believed to shift the trait composition of aquatic insects dwelling in banks of lentic ecosystems. In this study, we analyzed the relationship between the presence of the invasive white ginger lily (H. coronarium) and the functional trait indices of the aquatic insect assemblage in the littoral zone of a tropical reservoir. We sampled aquatic insects on the invaded and non-invaded banks of the reservoir and then analyzed the insect trait indices by estimating the Functional Dispersion (FDis), Functional Evenness (FEve) and the Functional Divergence (FDiv),...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biodiversity; Biological invasions; Functional diversity; Lentic system.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262017000100060

Functional patterns of tree communities in natural Araucaria forests and old monoculture conifer plantations
Provedor de dados: 39
Autores: Malysz,Marcelo; Müller,Sandra Cristina; Milesi,Silvia Vendruscolo; Santos,Anita Stival dos; Overbeck,Gerhard Ernst.
ABSTRACT A functional perspective of tree communities is helpful for understanding forest dynamics, especially vegetation recovery after other land uses. Knowledge about ecological filters and survival strategies of trees are also important for the restoration of degraded areas. This study aimed to evaluate the functional composition and structure of adult and regenerative components of natural Araucaria forests, Araucaria plantations and plantations of exotic Pinus in subtropical southern Brazil. Differences in functional diversity and functional richness, and in community weighted mean trait values, including leaf traits and reproductive traits, were analyzed. RLQ analysis was used to assess the association between community structure, plant traits and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Araucaria angustifolia; Atlantic Forest; Forest dynamics; Functional diversity; Functional patterns; Pinus sp.; Succession; Tree plantations.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062019000400777

Bacterial communities in mining soils and surrounding areas under regeneration process in a former ore mine
Provedor de dados: 58
Autores: Fernandes,Camila Cesário; Kishi,Luciano Takeshi; Lopes,Erica Mendes; Omori,Wellington Pine; Souza,Jackson Antonio Marcondes de; Alves,Lucia Maria Carareto; Lemos,Eliana Gertrudes de Macedo.
Abstract Human activities on the Earth's surface change the landscape of natural ecosystems. Mining practices are one of the most severe human activities, drastically altering the chemical, physical and biological properties of the soil environment. Bacterial communities in soil play an important role in the maintenance of ecological relationships. This work shows bacterial diversity, metabolic repertoire and physiological behavior in five ecosystems samples with different levels of impact. These ecosystems belong to a historical area in Iron Quadrangle, Minas Gerais, Brazil, which suffered mining activities until its total depletion without recovery since today. The results revealed Proteobacteria as the most predominant phylum followed by Acidobacteria,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Iron mine; Bacterial diversity; Functional diversity; Brazilian soils.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822018000300489