Professor Mark Osborn

@MicrobialLife@aus.social
1.3K Followers
705 Following
389 Posts

Living in a Microbial World...
#Microbiology Professor and Environmental Scientist.

#science #microbes #environment #highereducation #water

All posts are personal.
Naarm #Melbourne #Australia

I would like to acknowledge the Bunurong People of the Kulin Nation as the Traditional Owners and Custodians of the land on which I live. I pay my respects to their Elders past and present.

Staggering...

#Plastics don't break down in the #marine environment - they break up

- and result in this calamitous estimate of 170 trillion plastic pieces afloat across earth's oceans.

Learn more in this research in PLOS ONE on:

https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0281596

#PlasticPollution

A growing plastic smog, now estimated to be over 170 trillion plastic particles afloat in the world’s oceans—Urgent solutions required

As global awareness, science, and policy interventions for plastic escalate, institutions around the world are seeking preventative strategies. Central to this is the need for precise global time series of plastic pollution with which we can assess whether implemented policies are effective, but at present we lack these data. To address this need, we used previously published and new data on floating ocean plastics (n = 11,777 stations) to create a global time-series that estimates the average counts and mass of small plastics in the ocean surface layer from 1979 to 2019. Today’s global abundance is estimated at approximately 82–358 trillion plastic particles weighing 1.1–4.9 million tonnes. We observed no clear detectable trend until 1990, a fluctuating but stagnant trend from then until 2005, and a rapid increase until the present. This observed acceleration of plastic densities in the world’s oceans, also reported for beaches around the globe, demands urgent international policy interventions.

Over the last decade I've watched the huge developments going up in the West of #Melbourne to house the increasing population.

Sadly, this development plays scant consideration to fragile native #grassland #ecosystems. Whilst not as totemic in #Australia as the threat urban development poses to koala habitats, such destruction and/or biogeographical isolation of these important grassland habitats will drive species loss and impact on Australia's natural botanical heritage.

Learn more on ABC News on:

https://www.abc.net.au/news/2023-03-10/vic-truck-crushes-endangered-wildflowers-truganina-cemetery/101939222

#biodiversity #ecology

Destruction of endangered native wildflowers sparks fears of extinction on Melbourne's doorstep amid population boom

A field of endangered native wildflowers is damaged after a truck drives through a protected field in Melbourne's outer west, sparking fears of extinction as the city's sprawling population growth threatens grassland ecosystems.  

ABC News

Hubris...

Ruing the cost of coastal development - how the introduction of Spartina alterniflora (Smooth Cordgrass) into #wetlands in China to release land for #agriculture and development is now requiring massive and possibly futile remediation to save #wetland habitats.
FInd out more in Science on:

https://www.science.org/content/article/china-battles-alien-marsh-grass-unprecedented-scale

#ecology

China battles alien marsh grass at unprecedented scale

“Mammoth” plan to control a coastal invader would benefit migratory birds

This is so important!

Why #carbonoffsets are definitely not the answer and why the government in #Australia (and elsewhere) must not provide the #fossilfuels industry and other industries with a licence to continue burning coal, gas and oil.

Conversely, if #offsets are the answer - then the question is probably and really: How does a government continue to enable #fossilfuel use?

Learn more in this article in the @theconversationau

https://theconversation.com/a-tonne-of-fossil-carbon-isnt-the-same-as-a-tonne-of-new-trees-why-offsets-cant-save-us-200901

#ClimateCrisis #ClimateChange

A tonne of fossil carbon isn’t the same as a tonne of new trees: why offsets can’t save us

Labor must resist the false promise of carbon offsets in its safeguard mechanism. The only thing that matters is actually cutting emissions

The Conversation

Yet another reason why we have to take genuine action now (throughout this decade and onwards) on the #ClimateCrisis to stop #fossilfuel use and switch urgently to #renewables:

New research (in Nature on: https://www.nature.com/articles/s41586-022-05683-0 ) suggests the #BlackSummer fires in #Australia in 2019/20 depleted the #ozone layer by between 3 to 5%.

Given #bushfires and #forestsfires will increase with increasing temperature and #climatechange , this risk of ozone layer depletion and its implications for increased irradiation from the sun to earth and its health impacts (particularly skin cancer) will scale with number and size of global fire events.

Story in Guardian on:

https://www.theguardian.com/environment/2023/mar/08/smoke-from-australian-bushfires-depleted-ozone-layer-by-up-to-5-in-2020-study-finds

Chlorine activation and enhanced ozone depletion induced by wildfire aerosol - Nature

Comparison of model simulations with atmospheric observations from the Southern Hemisphere mid-latitudes following the 2020 Australian wildfires shows that the wildfire aerosol composition promotes stratospheric chlorine and ozone depletion chemistry.

Nature

Too slow.

Global CO2 emissions are still rising (by 1% in 2022) when what is needed are 7% reductions year-on-year this decade to have a fighting chance of being on track to reach #netzero.

Learn more on the latest data from the IEA in the Guardian on:

https://www.theguardian.com/environment/2023/mar/02/co2-emissions-may-be-starting-to-plateau-global-energy-watchdog-iea

#ClimateCrisis #ClimateChange

CO2 emissions may be starting to plateau, says global energy watchdog

IEA records rise of less than 1% from energy use in 2022, but 7% reduction needed every year this decade to meet emissions goal

The Guardian

Beggars belief...

This news in #Australia about the Labor government granting approval to Santos for 116 new coal seam gas wells in the Surat Basin, Queensland suggests a complete failure from the government to understand how serious the #ClimateCrisis is.

This decade is realistically our last chance to make a difference to prevent catastrophic future effects from major temperature increases and wider climate impacts and governments around the world are failing their countries at every turn.

I am so disappointed and frustrated with this news. Offsets and a gas transition are not what is needed. Instead, we need a ban on all new #fossilfuel developments and a rapid transition to renewables.

Learn more in the Guardian on:

https://www.theguardian.com/environment/2023/feb/21/making-climate-crisis-worse-greens-blast-labor-after-queensland-coal-seam-gas-expansion-approved

#ClimateChange

‘Making the climate crisis worse’: Greens blast Labor after Queensland coal seam gas expansion approved

Decision allows Santos to open 116 new wells with an operational life of about 30 years in the Surat Basin

The Guardian

Really concerning new research highlighting that 59% of #LongCOVID sufferers (sample size 331 individuals) were still showing evidence of organ damage/impairment after a year after their #COVID19 infection.

Find out more in this article in the Conversation and access the primary research article therein on:

https://theconversation.com/three-in-five-long-covid-patients-have-organ-damage-a-year-after-infection-200013

Three in five long COVID patients have organ damage a year after infection

A recent study found 59% of people with long COVID had damage to at least one organ a year after their initial symptoms.

The Conversation

El Nino and grassland fire risks in #Australia

Important new report from the #ClimateCouncil (authors include Greg Mullins and Joelle Gergis) on how the extended La Nina event over the last three years has enabled significant increases in grassland fire fuel loads which under drier El Nino conditions will then pose substantially higher risks of major grassland fires.

The challenge and opportunity for the Australian and State governments is to listen now to the scientists and firefighting leaders and to then plan how to reduce risk and also scale capacity to fight and contain these future fires before they can spread widely.

Read the report on:

https://www.climatecouncil.org.au/resources/powder-keg-australia-primed-to-burn/

#ClimateCrisis #ClimateChange

Powder Keg: Australia Primed to Burn | Climate Council

Australia has long been referred to as a land of "drought and flooding rains”, prone to bushfires as well as intense rainfall events. Periods of hot, dry, windy weather have regularly dried out vegetation and made it susceptible to ignition, alternating with prolonged wet periods that have promoted rapid and widespread vegetation growth. Climate change, driven by the burning of coal, oil, and gas, is worsening these extreme weather events.

Climate Council

Important and concerning new research suggesting that stronger El Nino events may accelerate melting of the ice sheet in #Antarctica. Learn more in this article in the Guardian based on new research in Nature Climate Change:

https://www.theguardian.com/environment/2023/feb/21/stronger-el-nino-events-may-speed-up-irreversible-melting-of-antarctic-ice-research-finds

#ClimateCrisis #ClimateChange

Stronger El Niño events may speed up irreversible melting of Antarctic ice, research finds

New study shows impact of weather phenomenon could have a ‘double whammy’ effect, leading to worsening extreme weather and accelerating sea level rise

The Guardian