Ocean acidification - the evil twin of climate change | Triona McGrath | TEDxFulbrightDublin
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- เผยแพร่เมื่อ 28 ก.ค. 2024
- In this talk, Dr. Triona McGrath explains how our oceans are changing due to increasing levels of carbon dioxide in the atmosphere and how it will impact our marine life. Triona shares her thoughts on ocean acidification and explain why it is the evil twin of climate change.
Dr. Triona McGrath is a Fulbright scholar and post-doctorate research fellow, currently working with the National University of Ireland, Galway and the Marine Institute, Ireland. Her primary area of research is chemical oceanography where she is investigating ocean acidification in Irish marine waters. In 2014, Triona was a Fulbright-Marine Institute Scholar at the Scripps Institute of Oceanography in San Diego.
This talk was given at a TEDx event using the TED conference format but independently organized by a local community. Learn more at ted.com/tedx
who else got sent here to do school work?
hey me too bro
me lol
The education system has let a lot of people down, lack of knowledge leads to mistrust. The big question is who do we trust most, dedicated scientists or politicians. Scientists seek the truth, politicians seek to bend the truth.
THANK YOU. SOMEBODY GETS IT. And screw the politicians
many scientists are paid millions to tell the lies.
@@paulstarr5706- -Examples?
@@nickguthrie9309 I suggest reading "When Scientists
Politicize Science" by Pielke for a more nuanzed perspective. the world is more complicated then just politics bad science good.
Scientists seek funding.... and that can be highly political, and not the same as seeking truth. It's complicated.
Thank u for giving this topic
The danger we are facing is basic salts nitrate sulphate and ammonium sulphate from the breakdown of atmosphere on Mercury Venus and Earth. The water is already toxic enough to kill people in Yosemite national park recently and elephant and people in Africa. The situation is dire.
It is absolutely necessary knowledge for modern society, thank you
It's all lies.
If we've only been collecting data on acidification for 20 years as she states then how can there be a measurement to get the 26% increase for the entire time of the Industrial Age?
By Age, Growth Rates, and Paleoclimate Studies in Deep‐Sea Corals
It's all lies. Warming oceans mean more CO2 is coming out of the oceans than going in.
When did the ocean acidification in the past lead to mass extinction? Over how many years did this happen approximately as well? If current rate at 10x worse than ever and it's going to be about 100 years to start affecting shell fish then it must have taken millennium or millennia to for this past mass extinction.
it seems, to stop burning fossel fuel, can not happen fast enough.
What's the name of the instrument she used to take in samples, temperature information etc?
It's a bit late, but it's probably a CTD (Conductivity, Temperatur, Depth) sensor. Usually a CTD rosette with bottles that also take water samples at various depths for salinity, chlorinity, etc. measurements.
Thanks Triona for excellent presentation. The world will NOT stop because businesses that makes money will never change their behaviour.
I hope thats not true...
This is great
It's very frightening . And this topic is really important! Thanks for the video. Hope, that after watching this video, people will start to do smth to solve the problem. 🙏
They lied to you.
I'm wondering what effects the suez canel and panama canel have on the oceans.
Especially taking into account the number of ships and god knows what localised in certain spots.
Maybe you better figure out the climate scam first.
Pink oceans in the Permian Extinction because of acidification killing phytoplankton. We have already lost 40%of phytoplankton overall mass since the 60s.
OH MY GOD THIS WAS SUCH A GREAT VIDEO
I don't partake in shellfish if I can help it
But you participate in oxygen!
I didnt know as much as i did about the ocean until after this video.
Is it possible for the oceans to be simultaneously alkaloid and acidity?
Wendy Simer The ocean will never be 'acidic' per se, but lower in pH than it should be. The pH has already decreased by 30% since industrialisation
You no doubt meant "alkaline". Strangely enough, an alkaloid is something much more complicated than an alkali. Wikipedia says that most have a "bitter" taste, the opposite of "acidic"
Perhaps the etymology is "It tastes like an alkali, b
ut I know it isn't one."
Why didn't she mention the poss effects on the ocean forests that are providing our, I dunno, OXYGEN?
the ocean provides about 2/3 of our oxygen! So, yeah, the ocean is important, too.
F
20 years of ph data does not a global trend make. And I am a bit suspect of that rate of ph decline. I would love to see the paper it is based on.
I see on the right of this TH-cam column, "Why renewables can't save the planet" by Michael Shellenberger.
He is correct, and he used to think they could.
Awesome explanation. Just wondering how much the water from melt ice would be -sadly- compensating the acidification, as well as affecting to salts concentration...
It's a scam.
Alarming. Hope we can do something about it.
Do nothing, it's a scam.
It's funny how she appeals to their love for seafood, and sad, and strategically right.
That is very sad.Appeal to their shellfish nature :-).
Not funny that i cant listin to her without imagining her naked that dress is nice! She should of wore something else imo!
This video is very concerning, I am an ocean lakes high school student. I hope the oceans will still have animal life when i have chidren.
What about the loss of oxygen in the oceans? When oxygen levels fell during the Jurassic Period, the new levels lasted for one million years before recovery....anyone has a 'smart' answer re: that? Any smart aleck answers there?
only 3,023 views!!??? what the hell.
E Dax that's exactly what I was thinking
E Dax and 7 comments
The title probably doesn't catch a lot of people's attention.
Z Dax Because the ocean water is so saline that this video is pure silliness.
Up to 36,000 July 2018
Great Talk!
All lies.
Righteous
These are some valid points, but she missed a point. It's not just CO2 that increases ocean acidity. Burning fossil fuels also leads to the formation of SO3 and NO2, which make H2SO4 and HNO3. However -- adding more H2CO3 to the ocean will increase acidity too.
Unfortunately, the emitters of fossil carbon dioxide know that only nuclear power can put them out of business, which is about half of what needs to happen. The other half is to capture and chemically sequester that CO₂. Dr. Alex Cannara, who also warns at somewhat greater length about oceanic acidification, hopes that with even more nuclear power, it could be captured and driven down into the basalts with which it would combine.
That which is alkaline cannot become more acidic. Moreover, declines in coral can be linked to low sea levels, not rising levels. And I think I can safely assume her 8 month old has not starved to death, due to a breakdown in the food chain?
p.s., I just bought some salmon; it was next to the shell fish, so neither went extinct. So, indeed, why should I care?
Of course It can become more acidic... Why shouldnt that be possible?
@@Dundoril for something to become more acidic, it has to be acid to begin with. Words mean things.
what better program to protect the oceans than to minimize erosion??????? Hello?
Natural Systems Agriculture: A Radical Alternative
Author: Wes Jackson
Publication: Agriculture, Ecosystems and Environment, 2002, Volume 88, pp. 111-117.
Abstract:
The Natural Systems Agriculture (NSA) idea was developed at The Land Institute in 1977 and was published in 1978.This new paradigm features an ecologically sound perennial food-grain-producing system where soil erosion goes to near zero, chemical contamination from agrochemicals plummets, along with agriculture’s dependence on fossil fuels.
I used to know the guy that wrote the paper on the subject, standard oil ruined his life. Last I heard he guy overdosed on fentanil...
Let's travel less in plane
Let's use more trains, public transport.
Let's use less cars.
These are same of ways we can contribute
When deposition of limestone ceases to muffle the effects of climate change
Its scary how fast everything can go away.
It's all lies.
We shoulda started fixing climate change in th '60s, when it became public knowledge. Us hippies didn't follow thru on protecting the environment. I wish we hadn't let it go....
It was called Global cooling then but there's no carbon tax rip off in that.
Add Alkyli. Problem Solved
Logic😂😂😂
Ocean slightly less alkaline to which species can easily adapt to and also prosper due to more Co2
Dear H2O sweetheart god bless u ....welcome
The oceans produce 50-75% of atmospheric oxigen - ocean warming and acidification will reduce the amount of oxygen produced - perhaps enough to most life on earth.
Well warming would out gas co2, so that would be good, right,
Очень важная тема! Нашему правительству и правительству других стран нужно решать эту глобальную проблему! Это касается всех! Иначе будет мировая экологическая катострофа!!!!
It's a scam.
What they fail to tell you is that the areas they are talking about shellfish dying are all in "dead zones", places where the o2 has been depleted by fertilizer leaked into the rivers upstream. They tell you the deaths are caused by co2 because there is a correlation between the deaths and rising co2, but they fail to tell you that marine biologist have already proven those deaths were caused by lack of o2.
They talk about reefs but fail to tell you that those reefs have recovered. The fail to talk about the hydrocarbon pollution in the water. They fail to mention that in some areas the water got hit by a cold mass of water causing bleaching. When the water warmed back up, the reefs recovered.
Try sequestering of CO2 via mass de-desertification by new agriculture techniques.
There is mention of huge herds of grazers that would be able to turn arid land back into lush savannahs.
The herds should move constantly though.
The climate would change as well: image the Sahara Desert, not as a hot sandbox but as a grassland.
I found it necessary to know about ocean acidification so we could prevent the same thing from happening in the future.
It's all lies.
how do they know the oceans data from 100 years back when they didn't have that thing to measure
Duncan Roundface they had instruments. that "thing" aint that complicated and modern also... 100 years ago we were already cooking up atomic bombs.
Silly question. We know what happened to two Black Holes billions of years ago.
Science!
They have very poor data, that is how.
年代ごとの地層の炭酸塩の割合から 100 年より前の海洋データが判るよう。
2011.12.26 『大気中の二酸化炭素と海洋酸性化－現代と過去の比較より－』
東京大学 海洋アライアンス 大気海洋研究所 川幡穂高
If we are in a natural warming cycle for the planet, the oceans should be warming. The amount of CO2 the oceans can dissolve is based on temperature. At a higher water temperature, the ocean holds less CO2, so actually, the ocean should be becoming more basic.
Этот ролик есть с озвучкой на русском!!! переходите на мою страницу.
Crab and all other arthropod shells are made of chitin, not carbonate. Surprised and disappointed to hear her make this mistake.
Chitin is the main part of the exoskeleton but some species harden their shell with carbonates as well like crustaceans.
Tinmothy maybe you should revise your sources, crab shells do contain carbonate ion so the argument of this talk remains valid
Here are 6 peer reviewed papers that disagree with the dooms day of a less alkaline ocean. Maybe make a part II and address these counter arguments.
Modern-age buildup of CO2 and its effects on seawater acidity and salinity
(Geophysical Research Letters, Volume 33, Number 10, May 2006)
- Hugo A. Loáiciga
Phytoplankton Calcification in a High-CO2 World
(Science, Volume 320, Number 5874, pp. 336-340, April 2008)
- M. Debora Iglesias-Rodriguez et al.
Elevated water temperature and carbon dioxide concentration increase the growth of a keystone echinoderm
(Proceedings of the National Academy of Sciences, Volume 106, Issue 23, pp. 9316-9321, June 2009)
- Rebecca A. Gooding et al.
Marine calcifiers exhibit mixed responses to CO2-induced ocean acidification
(Geology, Volume 37, Number 12, pp. 1131-1134, December 2009)
- Justin B. Ries et al.
Vulnerability of marine biodiversity to ocean acidification: A meta-analysis
(Estuarine, Coastal and Shelf Science, Volume 86, Issue 2, pp. 157-164, January 2010)
- I. E. Hendriks, C.M. Duarte, M. Alvarez
* Ocean acidification: Separating evidence from judgment - A reply to Dupont et al.
(Estuarine, Coastal and Shelf Science, Volume 89, Issue 2, pp. 186-190, September 2010)
- I. E. Hendriks, C.M. Duarte
Random Nobody
Oh geez, a cousin :))
"Conveying scientific evidence along with an open acknowledgment of uncertainties to help separate evidence from judgment should not harm the need to act to mitigate ocean acidification" is a quote from that last paper hahaha
Oceans are alkaline not acidic so how can they become more a acidic
the ocean has not got more acidic, it has got slightly less neutral. ie it is still neutral but 0.0001 less neutral on the acidic side. absolutely irelevent
Nice talk..but I have known all this for years .., but ...its good to see intelligence and beauty in the science field...
This Ted Talk was very interesting and brought up many facts about the ocean acidification rates. the dangers of ocean acidification not only for marine life but for us too was very surprising and a great motivator To want to help the ecosystem.
It's a scam.
I believe that ocean acidity is important because it not only affects us humans, but many different marine life. This would alter populations in the ocean and change the food chain - Isaiah Brown OLHS
nothing is gonna work without help of God. Our future is already settled the world is going to feel heat and nobody can escape only God's true followers
god isn't real, if it was it would have solved this shitshow by making every human sterile
okay so if your children mess their life up you just end their life? God is our father.
God is just to make our mind more peaceful and was the easiest answer to life.
Gosh in Cretaceous and earlier times there was commonly over 2000 ppm CO2 with incredible evolutionary explosion of subaqueous species....
Hmmmm
this explosion would be in a more steady environment, we are not saying that life is not possible in more acidic oceans, but the currents species are adapted to current conditions, and so changing conditions at this rapid pace will lead to huge problems for our oceans
Oh well if you want to life in the ocean that's fine I guess..
She's Irish but has a mix of accents. American and something else lol
You know today my teacher showed me this video and said that he was thr brain for this presentation. But I don't know if I believe that...
She must be a actress who else could lie with a straight face
"As we keep pumping".....mmm
Me likey
The same BS they fed us in the 70s!
GMOs babe, GMOs
Marry me ?
Yes
I have to wonder where your money come from?
Here's my take, blah,blah-great body blah,blah very great body, blah,blah,blah. (actually, interesting talk, but still distracted by you-know-what!)
This is a load of bollocks.. We currently have one of the lowest levels of CO2 in the atmosphere at about 340-400ppm (granted it has increased in the last 50 years) but some millions of years ago, it was over 1500ppm and life thrived and oceans were just fine. As a scientist, she failed to look at the full historical and empirical data and focused on data for 50 years which is a blip when talking about the planet and oceans
Some milions of years.. You do not even know the number...
Use a pretty face, and people will belive everything. Fantastic.