Supervisory authorities

CNRS

Our LABEX

Our Networks

Search




Visitors logged in: 11


Home > Communication > Scientific newsletter > Publications

Publications Publications feed

Page(s) : < | 1 | ... | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | ... | 209 |

2 November 2017

ToxTrac: A fast and robust software for tracking organisms [Methods in Ecology and Evolution]

Keywords : animal behavior, cockroach, ecology, ecotoxicology, guppy, Kalman filter, salmon, tadpole, tracking software, zebrafish

1.Behavioural analysis based on video recording is becoming increasingly popular within research fields such as; ecology, medicine, ecotoxicology and toxicology. However, the programs available to analyse the data, which are free of cost, user-friendly, versatile, robust, fast and provide reliable statistics for different organisms (invertebrates, vertebrates and mammals) are significantly limited.
2.We present an automated open-source executable software (ToxTrac) for image-based tracking that can simultaneously handle several organisms monitored in a laboratory environment. We compare the performance of ToxTrac with current accessible programs on the web.(...)

Read more

27 October 2017

Phylogenetically informed spatial planning is required to conserve the mammalian tree of life [Proceedings of the Royal Society B - Biological Sciences]

Keywords : mammals, phylogenetic diversity, conservation planning

In the face of the current extinction crisis and severely limited conservation resources, safeguarding the tree of life is increasingly recognized as a high priority. We conducted a first systematic global assessment of the conservation of phylogenetic diversity (PD) that uses realistic area targets and highlights the key areas for conservation of the mammalian tree of life. Our approach offers a substantially more effective conservation solution than one focused on species. In many locations, priorities for PD differ substantially from those of a species-based approach that ignores evolutionary relationships.(...)

Read more

27 October 2017

Reductions in global biodiversity loss predicted from conservation spending [Nature]

Halting global biodiversity loss is central to the Convention on Biological Diversity and United Nations Sustainable Development Goals, but success to date has been very limited. A critical determinant of success in achieving these goals is the financing that is committed to maintaining biodiversity ; however, financing decisions are hindered by considerable uncertainty over the likely impact of any conservation investment. For greater effectiveness, we need an evidence-based model that shows how conservation spending quantitatively reduces the rate of biodiversity loss.(...)

Read more

26 October 2017

Direct benefits explain interspecific variation in helping behaviour among cooperatively breeding birds [Nature Communications]

Keywords : animal behaviour, behavioural ecology, social evolution

Kin selection theory provides one important explanation for seemingly altruistic helping behaviour by non-breeding subordinates in cooperative breeding animals. However, it cannot explain why helpers in many species provide energetically costly care to unrelated offspring. Here, I use comparative analyses to show that direct fitness benefits of helping others, associated with future opportunities to breed in the resident territory, are responsible for the widespread variation in helping effort (offspring food provisioning) and kin discrimination across cooperatively breeding birds.(...)

Read more

26 October 2017

Tropical forests are thermally buffered despite intensive selective logging [Global Change Biology]

Keywords : climate change, land-use change, microclimate, microhabitat, selective logging, thermal buffering, thermal camera, tropics

Tropical rainforests are subject to extensive degradation by commercial selective logging. Despite pervasive changes to forest structure, selectively logged forests represent vital refugia for global biodiversity. The ability of these forests to buffer temperature-sensitive species from climate warming will be an important determinant of their future conservation value, although this topic remains largely unexplored. Thermal buffering potential is broadly determined by: (i) the difference between the “macroclimate” (climate at a local scale, m to ha) and the “microclimate” (climate at a fine-scale, mm to m, that is distinct from the macroclimate); (ii) thermal stability of microclimates (e.g. variation in daily temperatures); and (iii) the availability of microclimates to organisms. We compared these metrics in undisturbed primary forest and intensively logged forest on Borneo, using thermal images to capture cool microclimates on the surface of the forest floor, and information from dataloggers placed inside deadwood, tree holes and leaf litter.(...)

Read more

Page(s) : < | 1 | ... | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | ... | 209 |