Supervisory authorities

CNRS

Our LABEX

Our Networks

Search




Visitors logged in: 13


Home > Communication > Scientific newsletter > Scientific publications

Scientific publications Scientific publications feed

Page(s) : < | 1 | ... | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | ... | 255 |

1 March 2018

Research frontiers for improving our understanding of drought-induced tree and forest mortality [New Phytologist]

Keywords : carbon–water cycling, dynamic vegetation models, insects and pathogens, monitoring network, tree death

Accumulating evidence highlights increased mortality risks for trees during severe drought, particularly under warmer temperatures and increasing vapour pressure deficit (VPD). Resulting forest die-off events have severe consequences for ecosystem services, biophysical and biogeochemical land–atmosphere processes. Despite advances in monitoring, modelling and experimental studies of the causes and consequences of tree death from individual tree to ecosystem and global scale, a general mechanistic understanding and realistic predictions of drought mortality under future climate conditions are still lacking. We update a global tree mortality map and present a roadmap to a more holistic understanding of forest mortality across scales.(...)

Read more

1 March 2018

Secondary forest regeneration benefits old-growth specialist bats in a fragmented tropical landscape [Scientific Reports]

Keywords : conservation biology, restoration ecology

Tropical forest loss and fragmentation are due to increase in coming decades. Understanding how matrix dynamics, especially secondary forest regrowth, can lessen fragmentation impacts is key to understanding species persistence in modified landscapes. Here, we use a whole-ecosystem fragmentation experiment to investigate how bat assemblages are influenced by the regeneration of the secondary forest matrix. We surveyed bats in continuous forest, forest fragments and secondary forest matrix habitats, 15 and 30 years after forest clearance, to investigate temporal changes in the occupancy and abundance of old-growth specialist and habitat generalist species.(...)

Read more

1 March 2018

Bird conservation in the Carpathian Ecoregion in light of long-term land use trends and conservation responsibility [Biodiversity and Conservation]

Keywords : conservation responsibility, land abandonment, reforestation, historic available habitat

Land use change alters species’ abundance and distributions by affecting habitat availability and quality. The decline of bird populations worldwide is of major concern, and habitat protection and restoration are primary conservation actions. However, conservation decisions largely consider only short-term habitat changes and species’ population dynamics in a given area. Disregarding long term modifications in species’ available habitat, and the role of a given population for a species’ global population may lead to misdirected conservation action. Our goal here was to combine the assessment of conservation responsibility, with that of century-long available habitat dynamics, in order to inform better conservation practice. We compiled available habitat data for 170 bird species in the Carpathian Region from 1860 to 2010 from historic maps and satellite data.(...)

Read more

1 March 2018

Sex-specific additive genetic variances and correlations for fitness in a song sparrow (Melospiza melodia) population subject to natural immigration and inbreeding [BioRxiv]

Subject Area : evolutionary biology

Quantifying sex-specific additive genetic variance (VA) in fitness, and the cross-sex genetic correlation (rA), is pre-requisite to predicting evolutionary dynamics and the magnitude of sexual conflict. Quantifying VA and rA in underlying fitness components, and multiple genetic consequences of immigration and resulting gene flow, is required to identify mechanisms that maintain VA in fitness. However, these key parameters have rarely been estimated in wild populations experiencing natural environmental variation and immigration. We used comprehensive pedigree and life-history data from song sparrows (Melospiza melodia) to estimate VA and rA in sex-specific fitness and underlying fitness components, and to estimate additive genetic effects of immigrants as well as inbreeding depression.(...)

Read more

28 February 2018

Quantifying effects of biodiversity on ecosystem functioning across times and places [Ecology Letters]

Keywords : biodiversity, complementarity effect, ecosystem functioning, insurance effect, overyielding, selection effect

Biodiversity loss decreases ecosystem functioning at the local scales at which species interact, but it remains unclear how biodiversity loss affects ecosystem functioning at the larger scales of space and time that are most relevant to biodiversity conservation and policy. Theory predicts that additional insurance effects of biodiversity on ecosystem functioning could emerge across time and space if species respond asynchronously to environmental variation and if species become increasingly dominant when and where they are most productive. Even if only a few dominant species maintain ecosystem functioning within a particular time and place, ecosystem functioning may be enhanced by many different species across many times and places (β-diversity).(...)

Read more

Page(s) : < | 1 | ... | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | ... | 255 |