Antoine Becker-Scarpitta

Cirad - La recherche agronomique pour le développement | CIRAD

Many studies of individual sites have revealed biotic changes consistent with climate warming (e.g., upward elevational distribution shifts), but our understanding of the tremendous variation among studies in the magnitude of such biotic changes is minimal. In this study we re-surveyed forest vegetation plots 40 years after the initial surveys in t...

Les paysages qui nous entourent sont un héritage du passé. L’écologie historique nous invite à remonter le temps pour mieux les interpréter, pour comprendre la biodiversité et le fonctionnement actuels des écosystèmes qui les constituent et, finalement, anticiper leurs trajectoires à venir.Écologie historique propose une synthèse complète et actual...

Honeybees are the most widespread managed pollinators of our food crops, and a crucial part of their well-being is a suitable diet. Yet, we do not know how they choose flowers to collect nectar or pollen from. Here we studied forty-three honeybee colonies in six apiaries over a summer, identifying the floral origins of honey and hive-stored pollen...

Unlabelled: The Arctic is warming at an alarming rate. While changes in plant community composition and phenology have been extensively reported, the effects of climate change on reproduction remain poorly understood. We quantified multidecadal changes in flower density for nine tundra plant species at a low- and a high-Arctic site in Greenland. W...

The Arctic is warming at an alarming rate. While changes in plant community composition and phenology have been extensively reported, the effects of climate change on reproduction remain poorly understood. We quantified multidecadal changes in flower density for nine tundra plant species at a low- and a high-arctic site in Greenland. We found subst...

This chapter starts with a brief description of the Arctic tundra biome, and then summarizes how historical data have been used to describe and understand recent trends in Arctic tundra vegetation. In doing so, the chapter focuses on changes observed during the last five decades, while refraining from digging into the paleoecological records. It pr...

Despite many studies showing biodiversity responses to warming, the generality of such responses across taxonomic groups remains unclear. Very few studies have tested for evidence of bryophyte community responses to warming, even though bryophytes are major contributors to diversity and functioning in many ecosystems. Here, we report an empirical s...

Despite many studies showing biodiversity responses to warming, the generality of such responses across taxonomic groups remains unclear. Very few studies have tested for evidence of bryophyte community responses to warming, even though bryophytes are major contributors to diversity and functioning in many ecosystems. Here we report an empirical st...

Despite many studies showing biodiversity responses to warming, the generality of such responses across taxonomic groups remains unclear. Very few studies have tested for evidence of bryophyte community responses to warming, even though bryophytes are major contributors to diversity and functioning in many ecosystems. Here we report an empirical st...

The relative contribution of bryophytes to plant diversity, primary productivity, and ecosystem functioning increases towards colder climates. Bryophytes respond to environmental changes at the species level, but because bryophyte species are relatively difficult to identify, they are often lumped into one functional group. Consequently, bryophyte...

Many studies of individual sites have revealed biotic changes consistent with climate warming (e.g., upward elevational distribution shifts), but our understanding of the tremendous variation among studies in the magnitude of such biotic changes is minimal. In this study we re‐surveyed forest vegetation plots 40 years after the initial surveys in t...

For at least the past two centuries, human activities have caused strong environmental changes in the biosphere. Many studies have shown responses of vegetation to global changes. However, many unknowns remain. First, most explicitly temporal studies have been conducted at a single site with a common intensity of environmental changes and historica...

Aims Many studies of vegetation change over multiple decades have focused on vascular plants, but very few on bryophytes, despite the importance of bryophytes for overall plant biodiversity and ecosystem functioning. Using a repeated survey of vascular plants and bryophytes in a forest ecosystem, we tested predictions of the hypotheses that: (1) ve...

Forêt de Montmorency - Université de Laval - QC - Canada

Plant communities have undergone dramatic changes in recent centuries, although not all such changes fit with the dominant biodiversity-crisis narrative used to describe them. At the global scale, future declines in plant species diversity are highly likely given habitat conversion in the tropics, although few extinctions have been documented for t...

Presentation of methods to track natural plant community responses to warming: Community Temperature Index (CTI).

Lab discussion