Volume 8 Issue 5, May 2024

Scholars from the Global South face inherited challenges in working internationally as academic researchers, argues Farid Saleh.

The Anthropocene has been rejected as a formal epoch by the International Commission on Stratigraphy. Moving on and recognizing the deeper and more complex roots of human impacts on our planet will enable us to better, and more fairly, address them.

Combining species range-shift estimates with population trends for 146 marine species reveals that population abundances tend to decline as the velocity with which the species’ range is shifting poleward increases. The findings suggest widespread transient population dynamics rather than a simple dichotomy between climate-change ‘winners’ and ‘losers’.

Metatranscriptomic data from more than 2,000 mosquitoes of 81 species show that the composition of mosquito viral communities is determined more by host phylogeny than by climate and land-use factors, which will help to inform arbovirus surveillance.

An analysis of publicly available viral genomes explores the evolutionary dynamics of host jumps and shows that humans are as much a source of viral spillover events to other animals as they are recipients.

Long-term experimental evolution in brewer’s yeast reveals how the transition to simple multicellularity can drive ecological divergence and maintain diversity.

In this Perspective, the authors discuss current knowledge of deep-time protein preservation and how the chemical changes undergone by proteins affect taphonomic and palaeoproteomic analyses.

This Review identifies and describes interactions and feedbacks between biodiversity and diversity of Indigenous Peoples and Local Communities, and uses case studies from South America to illustrate the conservation and human benefits that can arise from protecting both biological and cultural diversity.

In an analysis of forest edge-to-interior transects in Europe, the authors show that different facets of biodiversity and different types of ecosystem service are found in forest interiors versus edges, suggesting that both have a role to play in the provisioning of ecosystem services in landscapes.

Combining ecophysiological growth models of >135,000 vascular plant species and information on plant growth form, the authors show that 33–68% of the global land surface will experience a significant change in the next 50 years in how climate supports the plant growth forms that define terrestrial ecosystems.

Analysing >1,700 inventory plots from the Amazon Tree Diversity Network, the authors show that the majority of Amazon tree species can occupy floodplains and that patterns of species turnover are closely linked to regional flood patterns.

Using multiple remote-sensing datasets, the authors show that temporal and spatial scale influence the detection of tree-mortality events and explain why there has been a seemingly conflicting pattern of both overall greening but also extensive tree mortality in recent decades.

Analysing camera-trap data of 163 mammal species before and after the onset of COVID-19 lockdowns, the authors show that responses to human activity are dependent on the degree to which the landscape is modified by humans, with carnivores being especially sensitive.

Abundance data for marine fish populations show that those shifting poleward rapidly due to climate change experience substantial population declines, suggesting that rapid range shifts are not sufficient to maintain stable populations.

A meta-transcriptomic analysis of the viromes of 2,438 mosquitoes of 81 species from across China identifies geographic hotspots of mosquito virus diversity, links between mosquito virome composition and host phylogeny, and a suggestion of long-distance mosquito dispersal.

Analysis of publicly available viral genomes shows that humans may give more viruses to animals than they give to us, and reveals evolutionary mechanisms underpinning viral host jumps.

Long-term high-resolution data on social relationships, space use and microhabitat in a wild population of mice (Apodemus sylvaticus), accompanied by sampling of the gut microbiota, show that distinct sets of microorganisms dominate social and environmental transmission routes of microbiota. Microorganisms with low oxygen tolerance are more reliant on social transmission.

The authors analyse 8,790 prokaryotic pangenomes to identify the ecological variables associated with recent versus old horizontal gene transfer events, finding that gene transfers are more common among co-occurring, highly abundant or host-associated species.

Constructing a biosphere-scale model of the evolutionary history of metabolism based on >12,000 biochemical reactions, the authors show that a bottleneck in purine synthesis prevents metabolic expansion from geochemical precursors.

Long-term experimental evolution and modelling show the evolution of small and large cluster-forming lineages of snowflake yeast that coexist over generations due to a trade-off between organismal size and competitiveness for dissolved oxygen.

Mismatch between the ancestry of mitochondrial and nuclear genomes can drive somatic evolution during ageing. Analysis of around 1.2 million mitochodrial somatic mutations in young and old mice shows haplotype-specific mutational patterns and hotspots, and reversion mutations that re-align mito-nuclear ancestry during an organism’s lifespan.

Isotope analysis of human and faunal remains dated to the Later Stone Age reveals a substantial plant-based component to hunter-gatherer diets at the site of Taforalt, several millennia prior to the development of agriculture in the Levant, renewing the question of why agriculture did not develop contemporaneously in North Africa.

Sauropod specialist Verónica Díez Díaz retains a fondness for an armoured giant.