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| Lopes,Celio M.; Misaki,Flora; Santos,Karina; Evangelista,Carlos A. P.; Carrijo,Tatiana T.; Garbin,Mário L.. |
| ABSTRACT The interplay between plant-plant interactions and light heterogeneity in the understory of tropical forests has rarely been examined. We aimed to identify the relative importance of the understory light environment and terrestrial bromeliads in explaining the abundance and spatial organization of different plant life forms along a coastal forest gradient from seashore inland in southeastern Brazil. We estimated the abundance of various life forms (herbs, woody plants, bromeliads, climbers, and palms) and the degree of light availability using hemispherical photographs in 165 plots (1 m2) within a 1.75 ha site. We used ordination methods, partial redundancy analysis (pRDA), spatial filtering using Moran’s eigenvector mapping, and Moran’s I... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Community assembly; Hemispherical photographs; Herb layer; Shrub layer; Spatial patterns. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000100084 |
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| Jordani, Mainara Xavier; Mouquet, Nicolas; Casatti, Lilian; Menin, Marcelo; De Cerqueira Rossa-feres, Denise; Albert, Cécile Hélène. |
| A better understanding of species coexistence and community dynamics may benefit from more insights on trait variability at the individual and species levels. Tadpole assemblages offer an excellent system to understand the relative influence of intraspecific and interspecific variability on community assembly, due to their high phenotypic plasticity, and the strong influence that environmental variables have on their spatial distribution and individual performance. Here, we quantified the intraspecific and interspecific components of tadpoles’ trait variability in order to investigate their relative role in shaping tadpole communities. We selected eight functional traits related to microhabitat use, foraging strategies, and swimming ability. We measured... |
| Tipo: Text |
Palavras-chave: Community assembly; Ecological niche; Fitness differences; Phenotypic variability; Stabilizing niche differences. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00486/59751/62856.pdf |
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| 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 |
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| Almoussawi, Ali; Lenoir, Jonathan; Jamoneau, Aurélien; Hattab, Tarek; Wasof, Safaa; Gallet‐moron, Emilie; Garzon‐lopez, Carol X.; Spicher, Fabien; Kobaissi, Ahmad; Decocq, Guillaume; Collins, Beverly. |
| Questions Forest fragmentation affects biodiversity locally (α diversity) and beyond — at relatively larger scales (γ diversity) — by increasing dispersal and recruitment limitations. Yet, does an increase in fragmentation affect the relationship between α and γ diversity and what can we learn from it? Location Northern France. Methods We surveyed 116 forest patches across three fragmentation levels: none (continuous forest); intermediate (forest patches connected by hedgerows); and high (isolated forest patches). Plant species richness of both forest specialists and generalists was surveyed at five nested spatial resolutions across each forest patch: 1 m2; 10 m2; 100 m2; 1,000 m2; and total forest patch area. First, we ran log‐ratio models to quantify the... |
| Tipo: Text |
Palavras-chave: Agricultural landscapes; Alpha diversity; Anthropogenic disturbances; Community assembly; Dispersal limitations; Gamma diversity; Habitat conservation strategies; Habitat fragmentation; Local-regional richness relationship; Metacommunity dynamics. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00592/70438/68577.pdf |
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| Alexandridis, Nikolaos; Dambacher, Jeffrey M.; Jean, Fred; Desroy, Nicolas; Bacher, Cedric. |
| In order to better understand and predict the dynamics of benthic macroinvertebrate communities, we need to first define the functional components of benthic biodiversity and then provide a mechanistic description of how they interact with their abiotic environment, their basic resources and each other. These interactions should be largely controlled by readily available biological traits, making trait-based modelling an ideal framework for the synthesis of relevant hypotheses from ecological theory and expert knowledge. With the help of benthic species traits, we derived a set of first principles regarding the role of organisms in processes of environmental filtering, consumption of algae/detritus, predation, use of space, biogenic habitat modification... |
| Tipo: Text |
Palavras-chave: Benthic macroinvertebrates; Biological traits; Biotic interactions; Community assembly; Functional groups; Qualitative modelling. |
| Ano: 2017 |
URL: http://archimer.ifremer.fr/doc/00394/50587/51411.pdf |
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| Alfaro Lucas, Joan Manel; Pradillon, Florence; Zeppilli, Daniela; Michel, Loic; Martinez‐arbizu, P; Tanaka, H; Foviaux, M; Sarrazin, Jozee. |
| Productivity and environmental stress are major drivers of multiple biodiversity facets and faunal community structure. Little is known on their interacting effects on early community assembly processes in the deep sea (>200 m), the largest environment on Earth. However, at hydrothermal vents productivity correlates, at least partially, with environmental stress. Here, we studied the colonization of rock substrata deployed along a deep‐sea hydrothermal vent gradient at four sites with and without direct influence of vent fluids at 1700 m depth in the Lucky Strike vent field (Mid‐Atlantic Ridge, MAR). We examined in detail the composition of faunal communities (>20 µm) established after two years and evaluated species and functional patterns. We... |
| Tipo: Text |
Palavras-chave: Colonization; Community assembly; Energy; Environmental filtering; Functional beta-diversity; Species beta-diversity. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00641/75342/76070.pdf |
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