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THE Oceans & Seas Thread pt 3

Re: THE Oceans & Seas Thread pt 3

Unread postby pstarr » Tue 29 Nov 2016, 16:06:58

We pollute the oyster beds, over-fish the pelagic seas and strip-mine the bottom (for ground fish). Yeah we are certainly screwing things up. You should stop eating fish. Go vegan like doh
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Re: THE Oceans & Seas Thread pt 3

Unread postby rockdoc123 » Tue 29 Nov 2016, 16:44:05

Already preempted you RockDoc. (see my previous post) Once again you twist the truth with the best of them


Yeah right. Exactly where did I twist the truth. Clearly you know nothing about taxonomy or how it relates to corals.

The first 'corals' appeared in the mid-Triassic. During the Triassic-Jurassic extinction event, a time of high ocean acidity and atmospheric CO2, reef development collapsed for millions of years, and resumed again with new coral families in the Jurassic once CO2 came back down.


It all depends on what you are referring to on a Taxonomic level. The Order Scleractinia of which modern extant Families and Generic levels of corals are members survived the Triassic/Jurassic extinction. The commonality within the Order is they are all calcium carbonate secretors. And that is the important point when it comes to looking at survival in warm or colder waters and varying levels of PH. The Family Acroporidae which includes the modern Genus Acropora has been around since the Jurassic and has survived higher and lower temperatures than current and more acidic waters. Choosing to just look at Generic or Specific levels in an argument ignores the ability of organisms within the same Order or Family to diversify through time. As well blaming the lack of coral growth on high CO2 is a bit of a stretch given it was much higher during the Jurassic and Devonian when carbonate secreting corals were widespread.

The skeletons of corals are made of calcium carbonate which dissolves in conditions of high acidity.

Ocean waters have never been acidic they are currently quite alkaline. Throughout the last 200 million years they have never dropped below 7.5 PH, 7.0 being neutral.

The precursors of the corals we have today evolved in the mid-Miocene and have NEVER BEFORE seen high ocean acidity or CO2 levels higher than current levels


Sorry incorrect. Mean surface PH in the Paleogene was ~7.8 and did not rise above 8.0 until the start of the Neogene and is currently at 8.1. See Figure 1 from:

Ridgwell A and Schmidt D, 2010. Past constraints on the vulnerability of marine calcification to massive carbon dioxide release. Nature Geoscience, 3, p 196-200

As to what you mean by pre-cursor are you refering to the Generic level? If so why? The entire Family (back to Jurassic) and indeed Order (back to Triassic) were carbonate secretors and they certainly endured both higher temperatures and higher CO2 levels.
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Re: THE Oceans & Seas Thread pt 3

Unread postby kiwichick » Tue 29 Nov 2016, 17:21:08

@ pstarr.....if you knew anything .....OK lets start again....... fish are among the most efficient converters of feed to protein .....along with chickens .....particularly eggs


http://www.skretting.com/en-AU/faqs/why ... livestock/
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Re: THE Oceans & Seas Thread pt 3

Unread postby pstarr » Tue 29 Nov 2016, 17:34:16

kiwichick wrote:@ pstarr.....if you knew anything .....OK lets start again....... fish are among the most efficient converters of feed to protein .....along with chickens .....particularly eggs


http://www.skretting.com/en-AU/faqs/why ... livestock/
huh? what?

I prefer farm raised or onshore sustainable fisheries like our Dungeness crabs or Pacific oysters. Season for the former opens Dec. 1. Hurrah! They shut the oyster fisheries after large rain events. Leaky pipes and overworked treatment plant temporarily pollute the best of these fisheries.

Irony is that human waste (in reasonable amounts, treated properly) is actually oyster and crab food. Problem is eutrophication, starvation, and siltation of the breeding grounds as per the Chesapeake Bay. That's a real tragedy. :cry:
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Re: THE Oceans & Seas Thread pt 3

Unread postby kiwichick » Tue 29 Nov 2016, 17:49:11

@ pstarr my post was in reply to your suggestion that I should stop eating fish......ie fish supplies a significant % of global protein .....and does so efficiently....and the "wild" catch is at risk as the marine food web breaks down.....is that simple enough for you?
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Re: THE Oceans & Seas Thread pt 3

Unread postby Plantagenet » Tue 29 Nov 2016, 19:22:41

Huge parts of the Great Barrier Reef in Australia have just died due to global warming

Corals dead at Great Barrier Reef

In Australia, the Great Barrier Reef (GBR) also saw its worst bleaching event on record. There, 93 percent of corals are reported to have experienced bleaching. Meanwhile, about 50 percent of corals have died in the northern section of the GBR. In the media, a controversy has raged over whether or not this event is the start of the great reef’s swansong. To be clear, the GBR was not killed off by the most recent large bleaching event. But it was dealt a very severe blow.

A global coral die-off is happening very quickly. Killing off most of the corals in the world's oceans at the same time the Arctic Ocean Sea Ice melting shows the global impact of global warming. :?

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Re: THE Oceans & Seas Thread pt 3

Unread postby pstarr » Tue 29 Nov 2016, 19:34:49

Plantagenet wrote:Huge parts of the Great Barrier Reef in Australia have just died due to global warming

Corals dead at Great Barrier Reef

Thats maybe even worse then the Arctic Ocean Sea Ice melting. :?

Nice link from the "Australian Research Center for Excellence of Coral Reef Studies" and Fox Non-News. You might want to try science Planty, instead of sound bites. laughable lol

Yes, an aerial was accomplished and it shows dead coral. But that is all. What the "report" does not show is CAUSE. Could it be sheep shit . . .
The Great Barrier Reef receives the run-off from 35 basins which drain 424,000km2 of coastal Queensland. River discharges are the single biggest source of nutrients to the inshore areas of the Great Barrier Reef World Heritage Area.
Over the past 150 years sediment inflow into the Great Barrier Reef has increased four to five times, and five to ten fold for some catchments.

Since when have you Republican accepted Al Gore as their mentor and leader?
Image
Trump doesn't worry but reefs, unless he is judging the Miss Reef Beauty Contest.
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Re: THE Oceans & Seas Thread pt 3

Unread postby Plantagenet » Tue 29 Nov 2016, 19:47:29

pstarr wrote:...dead coral. But that is all. What the "report" does not show is CAUSE. Could it be sheep shit


No. It can't be sheep shit.

Coral bleaching isn't caused by sheep shit.

Coral bleaching is caused by warming ocean waters. And the ocean is warming due to global warming.

Next question please. Or if you don't have any more questions could you just post more photos from the Ms. Reef contest?

THX.

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Re: THE Oceans & Seas Thread pt 3

Unread postby pstarr » Tue 29 Nov 2016, 19:53:47

Corals live in very nutrient poor waters and have certain zones of tolerance to water temperature, salinity, UV radiation, opacity, and nutrient quantities. They are actually very delicate structures. A snorklers fin can ruin a reef. That is why I mostly stopped diving on them.

Coral reef ecosystems world-wide have been subject to unprecedented degradation over the past few decades. Disturbances affecting coral reefs include anthropogenic and natural events. Recent accelerated coral reef decline seems to be related mostly to anthropogenic impacts overexploitation, overfishing, increased sedimentation and nutrient overloading. Natural disturbances which cause damage to coral reefs include violent storms, flooding, high and low temperature extremes, El Nino Southern Oscillation (ENSO) events, subaerial exposures, predatory outbreaks and epizootics.

Sure, high water temps are in there somewhere lol Along with the obvious . . . sheep agriculture, and human wastes.
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Re: THE Oceans & Seas Thread pt 3

Unread postby kiwichick » Tue 29 Nov 2016, 22:33:57

very few sheep in coastal Queensland

https://www.daf.qld.gov.au/animal-industries/sheep
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Re: THE Oceans & Seas Thread pt 3

Unread postby dohboi » Sat 10 Dec 2016, 01:02:14

https://www.rt.com/news/369685-80-quake ... M.facebook

Tsunami warnings after 7.8 quake strikes off Solomon Islands’ coast
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Re: THE Oceans & Seas Thread pt 3

Unread postby Newfie » Sat 10 Dec 2016, 12:19:47

kiwichick wrote:@ pstarr my post was in reply to your suggestion that I should stop eating fish......ie fish supplies a significant % of global protein .....and does so efficiently....and the "wild" catch is at risk as the marine food web breaks down.....is that simple enough for you?


KC,
the problem, among many, is fish stocks are collapsing. We are eating it all.

Harvesting is efficient to the point of extinction.
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Re: THE Oceans & Seas Thread pt 3

Unread postby pstarr » Sat 10 Dec 2016, 15:38:18

Newfie wrote:
kiwichick wrote:@ pstarr my post was in reply to your suggestion that I should stop eating fish......ie fish supplies a significant % of global protein .....and does so efficiently....and the "wild" catch is at risk as the marine food web breaks down.....is that simple enough for you?


KC,
the problem, among many, is fish stocks are collapsing. We are eating it all.

Harvesting is efficient to the point of extinction.

That is why I prefer farm raised and coastal fisheries. They are both relatively sustainable, as far as my own impact

kiwichick wrote:very few sheep in coastal Queensland

https://www.daf.qld.gov.au/animal-industries/sheep

But they crap in the rivers
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Re: THE Oceans & Seas Thread pt 3

Unread postby kiwichick » Sun 11 Dec 2016, 00:16:46

@ pstarr....thanks for the laugh.....you obviously know nothing about Australia.....but if you actually look at the map you posted you might get it ........you made my partner laugh as well.....after nearly dropping his can of beer....very funny
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Re: THE Oceans & Seas Thread pt 3

Unread postby pstarr » Mon 12 Dec 2016, 23:57:09

kiwichick wrote:@ pstarr....thanks for the laugh.....you obviously know nothing about Australia.....but if you actually look at the map you posted you might get it ........you made my partner laugh as well.....after nearly dropping his can of beer....very funny


what's funny? And why would I want to know anything about Australia? It's just another ex-prison colony of Britain like the US. Run and operated by loudmouthed crass drunks and bullies.

But seriously, on the map there's the reef over there . . . in the ocean (on the right). There's the rivers over on the land (left). That's where the sheep and the farmers crap all over the reefs. And if this has to do with the Great Dividing Range? It doesn't take a lot of polluted rivers to ruin the most fragile ecosystem anywhere. That's why you fankids are so worried, right?
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Re: THE Oceans & Seas Thread pt 3

Unread postby kiwichick » Tue 13 Dec 2016, 02:40:28

@ pstarr...yes ...exactly ....why would you want to know anything about what you are posting

clue; the sheep are not on the seaward side of the GD range ......hope that helps!!!
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Re: THE Oceans & Seas Thread pt 3

Unread postby kiwichick » Thu 05 Jan 2017, 03:45:44

sea surface temperatures around Australia at all time high

http://www.bom.gov.au/tmp/cc/sst.aus.01 ... .hires.png
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Re: THE Oceans & Seas Thread pt 3

Unread postby onlooker » Mon 13 Feb 2017, 19:48:59

No place is being spared from the devastation
https://www.theguardian.com/environment ... ana-trench
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Re: THE Oceans & Seas Thread pt 3

Unread postby onlooker » Sat 18 Feb 2017, 18:37:18

As predicted by climate science "Oxygen Levels In The Ocean Have Dropped Due To Climate Change "
http://www.iflscience.com/environment/o ... te-change/
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Re: THE Oceans & Seas Thread pt 3

Unread postby Subjectivist » Sat 18 Feb 2017, 18:47:13

onlooker wrote:As predicted by climate science "Oxygen Levels In The Ocean Have Dropped Due To Climate Change "
http://www.iflscience.com/environment/o ... te-change/


Actually a proper scientist would say Ocean Oxygen levels have dropped, of the many possible reasons for this we believe Global Warming is a significant factor.
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