Consulta: subjectFacets:"Environmental drivers"
Registros recuperados: 6
Data/hora: 27/07/2024 08:24:22

Biodiversity patterns, environmental drivers and indicator species on a High-temperature Hydrothermal edifice, mid-Atlantic ridge
Provedor de dados: 5
Autores: Sarrazin, Jozee; Legendre, Pierre; De Busserolles, Fanny; Fabri, Marie-claire; Guilini, Katja; Ivanenko, Viatcheslav N.; Morineaux, Marie; Vanreusel, Ann; Sarradin, Pierre-marie.
Knowledge on quantitative faunal distribution patterns of hydrothermal communities in slow-spreading vent fields is particularly scarce, despite the importance of these ridges in the global mid-ocean system. This study assessed the composition, abundance and diversity of 12 benthic faunal assemblages from various locations on the Eiffel Tower edifice (Lucky Strike vent field, Mid-Atlantic Ridge) and investigated the role of key environmental conditions (temperature, total dissolved iron (TdFe), sulfide (TdS), copper (TdCu) and pH) on the distribution of macro- and meiofaunal species at small spatial scales (&lt; 1 m). There were differences in macro- and meiofaunal community structure between the different sampling locations, separating the hydrothermal...
Tipo: Text
Palavras-chave: Biodiversity patterns; Environmental drivers; Indicator species; Hydrothermal vents; Mid-Atlantic Ridge; Meiofauna; Macrofauna; Lucky Strike.
Ano: 2015
URL: https://archimer.ifremer.fr/doc/00266/37713/35731.pdf

Bluetongue virus spread in Europe is a consequence of climatic, landscape and vertebrate host factors as revealed by phylogeographic inference
Provedor de dados: 5
Autores: Jacquot, Maude; Nomikou, Kyriaki; Palmarini, Massimo; Mertens, Peter; Biek, Roman.
Spatio-temporal patterns of the spread of infectious diseases are commonly driven by environmental and ecological factors. This is particularly true for vector-borne diseases because vector populations can be strongly affected by host distribution as well as by climatic and landscape variables. Here, we aim to identify environmental drivers for bluetongue virus (BTV), the causative agent of a major vector-borne disease of ruminants that has emerged multiple times in Europe in recent decades. In order to determine the importance of climatic, landscape and host-related factors affecting BTV diffusion across Europe, we fitted different phylogeographic models to a dataset of 113 time-stamped and geo-referenced BTV genomes, representing multiple strains and...
Tipo: Text
Palavras-chave: Bluetongue; Phylogeography; Viral diffusion; Environmental drivers; Predictor testing; Vector-borne pathogen.
Ano: 2017
URL: https://archimer.ifremer.fr/doc/00667/77880/80026.pdf

Ecological drivers of plant genetic diversity at the southern edge of geographical distributions: Forestal vines in a temperate region
Provedor de dados: 74
Autores: Barros,Michel J.F.; Diniz-Filho,José Alexandre F.; Freitas,Loreta B.
Abstract The Tropical Niche Conservatism hypothesis is one of the most relevant theories to explain why tropical diversity is high, although the mechanisms underlying this hypothesis require further clarification. A possible research avenue to address the underlying mechanisms includes determining population-level processes associated with such a hypothesis, in particular by trying to identify how adaptation may occur in extreme niche conditions at the edges of species ranges. However, the determinants of molecular diversity at the edges of geographical distributions of tropical taxa are still poorly known. Here we assessed which environmental variables determine diversity in nuclear and plastid genetic markers for populations of four Passiflora species in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Distribution edges; Genetic diversity; Passiflora; Niche conservatism; Environmental drivers.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572018000200318

Endogenous versus exogenous factors: What matters for vent mussel communities?
Provedor de dados: 5
Autores: Sarrazin, Jozee; Portail, Marie; Legrand, E.; Cathalot, Cecile; Laes, Agathe; Lahaye, Noe; Sarradin, Pierre-marie; Husson, Berengere.
The factors influencing the structure of hydrothermal communities are not necessarily similar across geographical regions and vent fields. In the present study, we explore the role of environmental conditions on vent community structure at local and regional spatial scales, focusing on the assemblages dominated by the engineer species Bathymodiolus azoricus. Their presence in several vent fields on the northern Mid-Atlantic Ridge (MAR) represents a unique opportunity to compare their associated fauna and to better understand large-scale biodiversity patterns. Two types of factors were considered: exogenous ones such as the presence of biogeographical barriers, depth, and distance between sites, and those linked to the intrinsic characteristics of each...
Tipo: Text
Palavras-chave: Intra-field variability; Inter-field variability; Hydrothermal fauna; Abiotic factors; Diversity measures; Macrofauna; Meiofauna; Environmental drivers; Community structure; Habitats.
Ano: 2020
URL: https://archimer.ifremer.fr/doc/00615/72661/71671.pdf

Suitable habitats of fish species in the Barents Sea
Provedor de dados: 5
Autores: Husson, Berengere; Certain, Gregoire; Filin, Anatoly; Planque, Benjamin.
Many marine species are shifting their distribution poleward in response to climate change. The Barents Sea, as a doorstep to the fast-warming Arctic, is experiencing large scale changes in its environment and its communities. This paper aims at understanding what environmental predictors limit fish species habitats in the Barents Sea and discuss their possible evolution in response to the warming of the Arctic. Species distribution models usually aim at predicting the probability of presence or the average abundance of a species, conditional on environmental drivers. A complementary approach is to determine suitable habitats by modelling the upper limit of a species’ response to environmental factors. Using quantile regressions, we model the upper limit...
Tipo: Text
Palavras-chave: Quantile regression; Habitat suitability models; Climate change; Species distribution; Species shifts; Environmental drivers.
Ano: 2020
URL: https://archimer.ifremer.fr/doc/00605/71682/70120.pdf

Temporal changes in the phytoplankton community along the French coast of the eastern English Channel and the southern Bight of the North Sea
Provedor de dados: 5
Autores: Hernandez- Farinas, Tania; Soudant, Dominique; Barille, Laurent; Belin, Catherine; Lefebvre, Alain; Bacher, Cedric.
Long-term trends in the phytoplankton community along the French coast of the English Channel and southern Bight of the North Sea were studied and related to physico-chemical factors and large-climatic indices. Phytoplankton and hydrological data were acquired through three transects. Sampling took place between 1992 and 2011 as part of the French Phytoplankton Monitoring Network (REPHY) and the Regional Nutrients Monitoring Network (SRN). Trends in time-series were identified with dynamic linear models tailored to environmental monitoring data characteristics (e.g. irregular sampling frequency, missing data). Temporal and spatial patterns in the phytoplankton community were explained with a partial triadic analysis. Relationships between the phytoplankton...
Tipo: Text
Palavras-chave: Climatic indicators; Dynamic linear model; Environmental drivers; Multivariate analysis; Phytoplankton.
Ano: 2014
URL: http://archimer.ifremer.fr/doc/00195/30619/32177.pdf