Supervisory authorities

CNRS

Our LABEX

Our Networks

Search




Visitors logged in: 12


Home > Communication > Scientific newsletter > Scientific publications

Scientific publications Scientific publications feed

Page(s) : < | 1 | ... | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | ... | 303 |

21 September 2018

Host defences against avian brood parasitism: an endocrine perspective [Proceedings of the Royal Society B - Biological Sciences]

Keywords : avian brood parasitism, host defences, hormones

Host defences against avian brood parasites are the outcome of well-documented coevolutionary arms races, yet important questions about variation in hosts’ antiparasitic response traits remain poorly understood. Why are certain defences employed by some species or individuals and not by others? Here, we propose that understanding variability in and the evolution of host defences can be facilitated by the study of the underlying physiological mechanisms. Specifically, because antiparasitic strategies involve behaviours that have been shown to be hormonally regulated in other contexts, we hypothesize that host responses to brood parasites are likely to be mediated by related endocrine mechanisms.(...)

Read more

18 September 2018

Towards global data products of Essential Biodiversity Variables on species traits [Nature Ecology & Evolution]

Essential Biodiversity Variables (EBVs) allow observation and reporting of global biodiversity change, but a detailed framework for the empirical derivation of specific EBVs has yet to be developed. Here, we re-examine and refine the previous candidate set of species traits EBVs and show how traits related to phenology, morphology, reproduction, physiology and movement can contribute to EBV operationalization. The selected EBVs express intra-specific trait variation and allow monitoring of how organisms respond to global change. We evaluate the societal relevance of species traits EBVs for policy targets and demonstrate how open, interoperable and machine-readable trait data enable the building of EBV data products. We outline collection methods, meta(data) standardization, reproducible workflows, semantic tools and licence requirements for producing species traits EBVs. An operationalization is critical for assessing progress towards biodiversity conservation and sustainable development goals and has wide implications for data-intensive science in ecology, biogeography, conservation and Earth observation.

Read more

18 September 2018

EukRef: Phylogenetic curation of ribosomal RNA to enhance understanding of eukaryotic diversity and distribution [PLOS Biology]

Subject Areas : sequence databases, Eukaryota, phylogenetic analysis, taxonomy, sequence alignment, phylogenetics, multiple alignment calculation, species diversity

Environmental sequencing has greatly expanded our knowledge of micro-eukaryotic diversity and ecology by revealing previously unknown lineages and their distribution. However, the value of these data is critically dependent on the quality of the reference databases used to assign an identity to environmental sequences. Existing databases contain errors and struggle to keep pace with rapidly changing eukaryotic taxonomy, the influx of novel diversity, and computational challenges related to assembling the high-quality alignments and trees needed for accurate characterization of lineage diversity. EukRef (eukref.org) is an ongoing community-driven initiative that addresses these challenges by bringing together taxonomists with expertise spanning the eukaryotic tree of life and microbial ecologists, who use environmental sequence data to develop reliable reference databases across the diversity of microbial eukaryotes.(...)

Read more

18 September 2018

Human influences on the strength of phenotypic selection [PNAS]

Keywords : contemporary evolution, global change, anthropogenic stressor, fitness, harvest selection

Human activities are driving rapid phenotypic change in many species, with harvesting considered to be a particularly potent evolutionary force. We hypothesized that faster evolutionary change in human-disturbed populations could be caused by a strengthening of phenotypic selection, for example, if human disturbances trigger maladaptation and/or increase the opportunity for selection. We tested this hypothesis by synthesizing 1,366 phenotypic selection coefficients from 37 species exposed to various anthropogenic disturbances, including harvest. We used a paired design that only included studies measuring selection on the same traits in both human-disturbed and control (not obviously human-disturbed “natural”) populations.(...)

Read more

18 September 2018

Aiming higher to bend the curve of biodiversity loss [Nature Sustainability]

The development of the post-2020 strategic plan for the Convention on Biological Diversity provides a vital window of opportunity to set out an ambitious plan of action to restore global biodiversity. The components of such a plan, including its goal, targets and some metrics, already exist and provide a roadmap to 2050.

Read more

Page(s) : < | 1 | ... | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | ... | 303 |