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Starve or Share? Legume phosphate status is fundamental for root nodule symbiosis

Abstract not available

• Speaker: Dr Oswaldo Valdes-Lopez, Functional Genomics of Legumes UNAM. Mexico
• Monday 21 July 2025, 14:00-15:00
• Venue: Sainsbury Laboratory Cambridge University Auditorium - 47 Bateman Street and online (contact events@slcu.cam.ac.uk for Zoom link).
• Series: Sainsbury Laboratory Seminars; organiser: Sainsbury Laboratory.

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Half of Australia’s seas are protected. So why are marine species and ecosystems in freefall? Carissa Klein, Associate Professor in Conservation Biology, The University of Queensland Amelia Wenger, Research Fellow in Conservation, The University of Queensland James Watson, Professor in Conservation Science, School of the Environment, The University of Queensland Licensed as Creative Commons – attribution, no derivatives.

As our domesticated herds grow, wildlife is becoming rarer and rarer. Rethinking our responsibilities to animals will be hard – but essential. Clive Phillips, Adjunct Professor in Animal Welfare, Curtin University Licensed as Creative Commons – attribution, no derivatives.

The spiny mammals are on the decline, but they hold the secrets to biodiversity in their local areas. Sophie Lund Rasmussen, Research fellow in Ecology and Conservation, University of Oxford Licensed as Creative Commons – attribution, no derivatives.

How to study the tropical atmospheric dynamics with a shallow-water model?: Gill and Lindzen-Nigam formulations

Abstract not available

• Speaker: Jun Ichi-Yano, Météo-France
• Thursday 12 June 2025, 12:00-13:00
• Venue: MR12, Centre for Mathematical Sciences, Wilberforce Road, Cambridge.
• Series: DAMTP Atmosphere-Ocean Dynamics; organiser: phh1.

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As baby corals float in the currents, they can expand their species’ range. But can they get to climate refuges fast enough to survive? A new study has good news and bad. Noam Vogt-Vincent, Postdoctoral Fellow in Marine Biology, University of Hawaii Licensed as Creative Commons – attribution, no derivatives.

A new report reveals the perilous state of nature in the Top End of the Northern Territory. Here’s how to arrest the decline of threatened species and habitat. Euan Ritchie, Professor in Wildlife Ecology and Conservation, School of Life & Environmental Sciences, Deakin University Brett Murphy, Professor of Ecology, Charles Darwin University John Woinarski, Professor of Conservation Biology, Charles Darwin University Licensed as Creative Commons – attribution, no derivatives.

Numerical simulations of multiphase flows with various complexities

Multiphase flows are of central importance to a wide range of industrial applications and environmental settings. Examples of these include mixing in stirred vessels and static mixers, flows in micro-channels and microfluidics devices, falling films for CO2 capture, and aerosol formation via bubble bursting through interfaces in the oceans. Some of these flows feature the presence of surface-active agents (surfactants), present either by design or as contaminants. Furthermore, multiphase flows are often punctuated by topological transitions related to the coalescence of dispersed drops or bubbles, and the breakup of threads or ligaments. Here, we provide a few examples of interest to the JFM community but focus on drop impact on hydrophobic substrates in the presence of surfactants above the critical micelle concentration. Our model accounts for the spatio-temporal evolution of the surfactants along the interface and within the bulk; the bulk and interfacial species are fully-coupled via sorptive fluxes. Micellar formation and breakup are also accounted for, and the surfactant dynamics are coupled to the flow through the dependence of the surface tension on the local interfacial surfactant concentration. Our numerical procedure is based on the use of a hybrid interface-tracking/level-set approach. The results of our parametric study help identify the various physical mechanisms underlying the observed flow phenomena.

• Speaker: Prof Omar Matar, Imperial College London
• Friday 06 June 2025, 16:00-17:00
• Venue: https://cassyni.com/s/fmws.
• Series: Fluid Mechanics (DAMTP); organiser: Professor Grae Worster.

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For decades, researchers have sought proof this critically endangered possum existed in New South Wales. Now it’s arrived by sheer chance David Lindenmayer, Distinguished Professor of Ecology, Fenner School of Environment and Society, Australian National University Darcy Watchorn, Threatened Species Biologist, Wildlife Conservation & Science Department, Zoos Victoria, and Visiting Scholar, School of Life & Environmental Science, Deakin University Jaana Dielenberg, University Fellow in Biodiversity, Charles Darwin University Licensed as Creative Commons – attribution, no derivatives.

The Australian Antarctic Program Partnership (AAPP) Biogeochemistry Project: Understanding the changing Southern Ocean carbon cycle

The Australian Antarctic Program Partnership (AAPP) is focused on understanding the nature and impacts of Southern Ocean Change. The Biogeochemistry Project, one of the seven complementary initiatives within the AAPP , combines observations, models and data syntheses to understand changes in the Southern Ocean carbon cycle. This work is undertaken in collaboration with other government agencies, national infrastructure programs, and academic institutions, and highlights the use of essential ocean observations and models to improve understanding and deliver impact. An overview of recent field programs will be presented, along with new work to quantify the uptake and storage of anthropogenic CO2 in the ocean, to validate estimates of ocean carbon export from autonomous platforms, and to improve model representation of air-sea CO2 exchange.

• Speaker: Elizabeth H. Shadwick, CSIRO Environment
• Wednesday 04 June 2025, 13:00-14:00
• Venue: BAS Seminar Room 1.
• Series: British Antarctic Survey - Polar Oceans seminar series; organiser: Dr Birgit Rogalla.

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The Australian Antarctic Program Partnership (AAPP) Biogeochemistry Project: Understanding the changing Southern Ocean carbon cycle

The Australian Antarctic Program Partnership (AAPP) is focused on understanding the nature and impacts of Southern Ocean Change. The Biogeochemistry Project, one of the seven complementary initiatives within the AAPP , combines observations, models and data syntheses to understand changes in the Southern Ocean carbon cycle. This work is undertaken in collaboration with other government agencies, national infrastructure programs, and academic institutions, and highlights the use of essential ocean observations and models to improve understanding and deliver impact. An overview of recent field programs will be presented, along with new work to quantify the uptake and storage of anthropogenic CO2 in the ocean, to validate estimates of ocean carbon export from autonomous platforms, and to improve model representation of air-sea CO2 exchange.

• Speaker: Elizabeth H. Shadwick, CSIRO Environment
• Wednesday 04 June 2025, 13:00-14:00
• Venue: BAS Seminar Room 1.
• Series: British Antarctic Survey - Polar Oceans seminar series; organiser: Dr Birgit Rogalla.

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The Australian Antarctic Program Partnership (AAPP) Biogeochemistry Project: Understanding the changing Southern Ocean carbon cycle

The Australian Antarctic Program Partnership (AAPP) is focused on understanding the nature and impacts of Southern Ocean Change. The Biogeochemistry Project, one of the seven complementary initiatives within the AAPP , combines observations, models and data syntheses to understand changes in the Southern Ocean carbon cycle. This work is undertaken in collaboration with other government agencies, national infrastructure programs, and academic institutions, and highlights the use of essential ocean observations and models to improve understanding and deliver impact. An overview of recent field programs will be presented, along with new work to quantify the uptake and storage of anthropogenic CO2 in the ocean, to validate estimates of ocean carbon export from autonomous platforms, and to improve model representation of air-sea CO2 exchange.

• Speaker: Elizabeth H. Shadwick, CSIRO Environment
• Wednesday 04 June 2025, 13:00-14:00
• Venue: BAS Seminar Room 1.
• Series: British Antarctic Survey - Polar Oceans seminar series; organiser: Dr Birgit Rogalla.

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Figuring out whether de-extinction is possible is as much a technical puzzle as a philosophical one. Add two kinds of DNA to the mix, and it gets even more complex. Elay Shech, Professor of Philosophy, Auburn University Licensed as Creative Commons – attribution, no derivatives.

Bringing nature back to our cities doesn’t just mean plants and birds. We can bring native animals back too. Patrick Finnerty, Postdoctoral Research Fellow in conservation and wildlife management, University of Sydney Thomas Newsome, Associate Professor in Global Ecology, University of Sydney Licensed as Creative Commons – attribution, no derivatives.

Species-rich islands are in the crosshairs of stronger storms as the climate crisis escalates. Simon Valle, Conservation Planning Officer at IUCN SSC Conservation Planning Specialist Group & Honorary Lecturer in Conservation Science, Bangor University David Jorge Pereira, PhD Candidate, Conservation Science, University of Birmingham Licensed as Creative Commons – attribution, no derivatives.

Violence by armed groups is dangerously disrupting the conservation and protection of the environment. Papa Sow, Senior Researcher, The Nordic Africa Institute Licensed as Creative Commons – attribution, no derivatives.

The Grassland Society of Southern Africa has been conducting scientific research for 60 years, adapting to new challenges. Kevin Kirkman, Professor of Grassland Science, University of KwaZulu-Natal Craig Morris, Senior Researcher, Agricultural Research Council - Animal Production, University of KwaZulu-Natal Helga van der Merwe, Doctor in Arid Systems Ecology, South African Environmental Observation Network (SAEON) Licensed as Creative Commons – attribution, no derivatives.

The statistical challenges in tackling persistent climate model uncertainty through model-observation comparisons.

Abstract: The effects of aerosols on the Earth’s energy balance since pre-industrial times (aerosol radiative forcing) has significantly and repeatedly dominated the uncertainty in reported estimates of global temperature change from the IPCC . The magnitude of aerosol radiative forcing of climate over the industrial period is estimated to lie between about -2 and -0.4 W m-2, compared to a much better understood forcing of 1.6 to 2.0 W m-2 due to CO2 . In this seminar, past efforts to quantify the range of possible aerosol forcings predicted from an aerosol-climate model that are caused by parametric uncertainty, and to constrain that forcing uncertainty through model-observation comparison using extensive aerosol and cloud-based measurements from ships, flight campaigns, satellites and ground stations, will be discussed. We find that despite a very large reduction in plausible parameter space and reasonable constraint on observable properties, the observational constraint based on this comprehensive set of measurements only partially reduces the range of aerosol radiative forcings from our model. In the NERC project ‘Towards Maximum Feasible Reduction in Aerosol Forcing Uncertainty’ (Aerosol-MFR), several key statistical challenges highlighted from this work are being addressed in order to improve the model-observation comparison process for uncertainty constraint. This includes optimising the way observational constraints are applied, designing new approaches for reducing error compensation effects and using the PPE to identify and characterise model structural errors. Preliminary results from the project so far will be outlined, along with further plans to tackle this important problem.

Biography: Dr Jill Johnson is a Lecturer in Statistics in the School of Mathematical and Physical Sciences at the University of Sheffield. Her research interests are in the development and practical application of statistical methods to quantify, assess and then reduce uncertainty in large-scale complex models of real-world systems, with a focus on problems in environmental science. Prior to joining Sheffield in August 2021, Jill worked as an applied statistician / research associate for over 8 years in the aerosol research group at the Institute for Climate and Atmospheric Science, University of Leeds, where her work focussed on the quantification and constraint of key uncertainties in models of the atmosphere and climate. Her current research builds on this work, including the NERC research project ‘Towards Maximum Feasible Reduction in Aerosol Forcing Uncertainty (Aerosol-MFR)’.

https://teams.microsoft.com/l/meetup-join/19%3ameeting_OWJjY2ViNjktOWZjMS00NGJmLWI5MTUtNTYxM2E5MTgyMTQ1%40thread.v2/0?context=%7b%22Tid%22%3a%2249a50445-bdfa-4b79-ade3-547b4f3986e9%22%2c%22Oid%22%3a%228b208bd5-8570-491b-abae-83a85a1ca025%22%7d

• Speaker: Dr Jill S Johnson; School of Mathematical and Physical Sciences, University of Sheffield, UK
• Tuesday 24 June 2025, 14:00-15:00
• Venue: Chemistry Dept, Unilever Lecture Theatre and Teams.
• Series: Centre for Atmospheric Science seminars, Chemistry Dept.; organiser: Yao Ge.

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The Australian Antarctic Program Partnership (AAPP) Biogeochemistry Project: Understanding the changing Southern Ocean carbon cycle

The Australian Antarctic Program Partnership (AAPP) is focused on understanding the nature and impacts of Southern Ocean Change. The Biogeochemistry Project, one of the seven complementary initiatives within the AAPP , combines observations, models and data syntheses to understand changes in the Southern Ocean carbon cycle. This work is undertaken in collaboration with other government agencies, national infrastructure programs, and academic institutions, and highlights the use of essential ocean observations and models to improve understanding and deliver impact. An overview of recent field programs will be presented, along with new work to quantify the uptake and storage of anthropogenic CO2 in the ocean, to validate estimates of ocean carbon export from autonomous platforms, and to improve model representation of air-sea CO2 exchange.

• Speaker: Elizabeth H. Shadwick, CSIRO Environment
• Wednesday 04 June 2025, 14:00-15:00
• Venue: BAS Seminar Room 1.
• Series: British Antarctic Survey - Polar Oceans seminar series; organiser: Dr Birgit Rogalla.

Add to your calendar or Include in your list

The Australian Antarctic Program Partnership (AAPP) Biogeochemistry Project: Understanding the changing Southern Ocean carbon cycle

The Australian Antarctic Program Partnership (AAPP) is focused on understanding the nature and impacts of Southern Ocean Change. The Biogeochemistry Project, one of the seven complementary initiatives within the AAPP , combines observations, models and data syntheses to understand changes in the Southern Ocean carbon cycle. This work is undertaken in collaboration with other government agencies, national infrastructure programs, and academic institutions, and highlights the use of essential ocean observations and models to improve understanding and deliver impact. An overview of recent field programs will be presented, along with new work to quantify the uptake and storage of anthropogenic CO2 in the ocean, to validate estimates of ocean carbon export from autonomous platforms, and to improve model representation of air-sea CO2 exchange.

• Speaker: Elizabeth H. Shadwick, CSIRO Environment
• Wednesday 04 June 2025, 14:00-15:00
• Venue: BAS Seminar Room 1.
• Series: British Antarctic Survey - Polar Oceans seminar series; organiser: Dr Birgit Rogalla.

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