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Wed 30 Apr 14:00: Unravelling the complexity of root stem cell niche regulation through multi-scale models

Conservation at Cambridge - Tue, 22/04/2025 - 17:00

Unravelling the complexity of root stem cell niche regulation through multi-scale models

Abstract not available

Speaker: Dr Monica Garcia Gomez, Assistant Professor, Utrecht University
Wednesday 30 April 2025, 14:00-15:00
Venue: Auditorium of Sainsbury Laboratory Cambridge University - 47 Bateman Street and Online (Zoom meeting). Contact events@slcu.cam.ac.uk for meeting joining details.
Series: Sainsbury Laboratory Seminars; organiser: Sainsbury Laboratory.

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Ambitious changes to Canadian conservation law are needed to reverse the decline in biodiversity

Biodiversity News - Tue, 22/04/2025 - 12:57

Canada needs a biodiversity protection and conservation act that will address current biodiversity decline and prevent future threats. Trevor Swerdfager, Practitioner-In-Residence, Faculty of Environment, University of Waterloo, University of Waterloo Derek Armitage, Professor, School of Environment, Resources and Sustainability, University of Waterloo Licensed as Creative Commons – attribution, no derivatives.

Fri 13 Jun 16:00: Thermal vortex rings: the vortex dynamics

Conservation at Cambridge - Tue, 22/04/2025 - 11:56

Thermal vortex rings: the vortex dynamics

A thermal is a convective structure generated from a localized buoyancy anomaly, say, released from the surface. Since it evolves into a donuts-shaped vorticity, the vortex ring, it may be more precisely called the thermal vortex ring. Thermals are often considered basic elements of fully-developed convection in astrophysical and geophysical flows, as most vividly visualized by a cauliflower-like structure of cumulus-convective clouds. This talk revisits the problem of the thermal vortex ring from a point of view of the vortex dynamics. More specifically, I present: 1) a modon solution of a thermal vortex ring as an extension of Hill’s vortex; 2) a concise description based on the volume integrals of the vorticity weighted by a power of the distance from the vortex-ring axis; 3) derivation of a classical similarity solution based on it, as well as 4) a development of a closed system based on an explicit simulation. Those investigations as a whole suggest that the thermal vortex ring could be interpreted as a type of two-dimensional turbulence.

Speaker: Dr Jun-Ichi Yano, University of Reading
Friday 13 June 2025, 16:00-17:00
Venue: MR2.
Series: Fluid Mechanics (DAMTP); organiser: Professor Grae Worster.

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‘De-extinction’ of dire wolves promotes false hope: technology can’t undo extinction

Biodiversity News - Wed, 16/04/2025 - 00:24

Claims of ‘bringing back’ any species take away focus from proven solutions that can actually fix the extinction crisis. Martín Boer-Cueva, Ecologist and Environmental Consultant, Universidad Autónoma de Madrid Dieter Hochuli, Professor, School of Life and Environmental Sciences, University of Sydney Marco Salvatori, Post-doctoral Researcher in Ecology, University of Florence Peter Banks, Professor of Conservation Biology, School of Life and Environmental Sciences, University of Sydney Licensed as Creative Commons – attribution, no derivatives.

Allowing forests to regrow and regenerate is a great way to restore habitat

Biodiversity News - Tue, 15/04/2025 - 21:05

New research found regrowth in Queensland provided valuable habitat after 15 years, on average, with some species benefiting from trees as young as 3 years of age. Hannah Thomas, PhD candidate in Environmental Policy, The University of Queensland Martine Maron, Professor of Environmental Management, The University of Queensland Licensed as Creative Commons – attribution, no derivatives.

Why ‘de-extinct’ dire wolves are a Trojan horse to hide humanity’s destruction of nature

Biodiversity News - Mon, 14/04/2025 - 17:10

Extinction is, for the time being, forever – and a symptom of our global economic system. Rich Grenyer, Associate Professor in Biogeography and Biodiversity, University of Oxford Licensed as Creative Commons – attribution, no derivatives.

We study ‘planktivores’ – and found an amazing diversity of shapes among plankton-feeding fishes

Biodiversity News - Fri, 11/04/2025 - 04:29

Ever since Charles Darwin, scientists have assumed species facing the same problem often evolve similar traits. But that’s not always the case. Isabelle Ng, PhD candidate, College of Science and Engineering, James Cook University Alexandre Siqueira, Vice-Chancellor's Research Fellow, School of Science, Edith Cowan University Licensed as Creative Commons – attribution, no derivatives.

Good boy or bad dog? Our 1 billion pet dogs do real environmental damage

Biodiversity News - Thu, 10/04/2025 - 00:26

We don’t want to admit it, but our beloved pet dogs do a lot of environmental damage, from killing or terrifying wildlife to emissions from pet food. Bill Bateman, Associate Professor, Behavioural Ecology, Curtin University Lauren Gilson, Research Associate, Behavioural Ecology, Curtin University Licensed as Creative Commons – attribution, no derivatives.

Biosecurity policies can be annoying – but a century of Antarctic data shows they work

Biodiversity News - Sun, 06/04/2025 - 21:06

Biosecurity policies may seem onerous and expensive – but they are working to prevent new species from pushing native species out in the Antarctic. Rachel Leihy, Ecologist, Arthur Rylah Institute for Environmental Research Melodie McGeoch, Professor of Ecology, Monash University Steven Chown, Director, Securing Antarctica's Environmental Future and Professor of Biological Sciences, Monash University Licensed as Creative Commons – attribution, no derivatives.

Invisible losses: thousands of plant species are missing from places they could thrive – and humans are the reason

Biodiversity News - Wed, 02/04/2025 - 20:04

Many native plants are missing from habitats where they should thrive – even in wilder areas. Why? Human actions such as logging, poaching and setting fires. Cornelia Sattler, Research Fellow in Ecology, Macquarie University Julian Schrader, Lecturer in Plant Ecology, Macquarie University Licensed as Creative Commons – attribution, no derivatives.

Flies are masters of migration – it’s about time they got some credit

Biodiversity News - Wed, 02/04/2025 - 17:59

Flies are the most ecologically diverse and important migrant group. We just had no idea. Will Hawkes, Insect Migration Researcher, College of Life and Environmental Science, University of Exeter Licensed as Creative Commons – attribution, no derivatives.