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Have fun screaming at the sky, denialists. The world has moved on without you. Catch up or stay behind, your choice. And understand that if you keep obeying your cult's orders to auto-disagree with the intelligent people, you're going to keep being wrong about everything.
Flac, want to tell us again how the oyster species that has been mass-farmed on the Pacific coast for 90 years or so is really a new arrival?
Funny how they never had those mass die offs during upwellings in the previous 90 years. I'm sure, however, the socialists are involved somehow. They got to the oyster farmers, somehow, and converted them to socialism.
Flac, want to tell us again how the oyster species that has been mass-farmed on the Pacific coast for 90 years or so is really a new arrival?
Funny how they never had those mass die offs during upwellings in the previous 90 years. I'm sure, however, the socialists are involved somehow. They got to the oyster farmers, somehow, and converted them to socialism.
What the hell, are you blind as well as stupid? There have been papers on it going back at least to the 1970's.
Flac, want to tell us again how the oyster species that has been mass-farmed on the Pacific coast for 90 years or so is really a new arrival?
Funny how they never had those mass die offs during upwellings in the previous 90 years. I'm sure, however, the socialists are involved somehow. They got to the oyster farmers, somehow, and converted them to socialism.
http://www.nwrc.usgs.gov/wdb/pub/species_profiles/82_11-085.pdf
Geographic Range: Morro Bay,
California, t o northern B r i t i s h
Columbia; Japan (Quayle 1960; Fitch
1953). Quayle (1969a) reported
t h a t breeding occurs natural l y only
between Willapa Harbour ( l a t . 46O
N.) and Pendrell Sound ( l a t . 50°
N. ) Consistent breeding occurs
only i n Dabob and Quilcene Bays
i n Washington and Pendrell Sound
and Pipestem I n l e t i n B r i t i s h
Col umbia; breeding i s rare or
sporadic i n other locations.
Temperature plays a major r o l e i n
t h e d e v e l o,~ me n t o f t h e f e r t i l i z e d ~
oyster egg. A decrease o f 2'C
(from 24.5OC t o 22.5OC) doubled the
time required f o r the formation o f the
trochophore larvae ( G a l s t o f f 1964).
F e r t i 1 ized eggs reached the vel i g e r
stage i n 72 hours a t 14'C, and i n 28
hours at 22'C (Loosanoff and Davis
1963).
Growth of the free-swimminq l a r -
vae depends on many f a c t o r s ; the
length of the l a r v a l period i s dependent
on the water temperature. Temperatures
must be 20°C or greater f o r at
l e a s t three weeks f o r near optimal
growth (Magoon and Vining 1981).
Although larvae can survive s l i g h t l y
lower water temperatures, t h i s pro-
1 ongs t h e i r development and increases
t h e i r exposure t o pelagic predators
(Kennedy and Breisch 1981).
Growth i n oysters varies widely
w i t h t i d a l height, growing area, and
environmental conditions. Oyster
growth can be measured by increases i n
s h e l l size or body size. As a general
r u l e , growth i s f a s t e r as water temperature
increases (Loosanof f 1965).
The Pacific Northwest waters are
generally too cool for C. gigas as adult s
to spawn successfully - or their
larvae to settle in quantities apprecable for commercial use (Korringa
1976). Exceptions t o t h i s a r e Dabob
Bay and Quilcene Bay i n Washington,
where y e a r l y s p a t f a l l averages about
25 per s h e l l o f c u l t c h , w h i l e i n
P e n d r e l l Sound i n B r i t i s h Columbia,
commercial sets o f over 1,000 spat
per s h e l l are n o t uncommon (Korringa
1976; Chew, pers. comm.). Both areas
are r e l a t i v e l y protected; summer
water temperatures r e g u l a r l y exceed
20'C and where hydrographic f e a t u r e s
f a c i l i t a t e o y s t e r l a r v a l r e t e n t i o n
(Quayle 1969a; Korringa 1976).
Local News | Pearl Of Northwest Oysters Has Returned From The Brink | Seattle Times Newspaper
In the years after World War II, the oyster industry in Oregon had become firmly established, and it continues to grow. In 1995, commercial growers in four Oregon estuaries produced 28,388 gallons of oysters worth nearly $1 million.
But those are nearly all non-native Pacific oysters - Crassotrea gigas - originally imported from Japan. Pacific Northwest waters are too cold for them to reproduce naturally. They have to be spawned in tanks to produce spat for seeding oyster beds.
Oysters play a vital part in an estuary's ecosystem, Johnson says, filtering the water and growing together to form reeflike structures that provide habitat for a variety of creatures. To allow the only natural oysters capable of filling that role to go extinct was inconceivable to him.
Johnson's job put him in a position to take action. In 1992, state Fish & Wildlife divers gathered 300 adult native oysters from Yaquina Bay and put them in Netarts Bay, north of Pacific City, to determine if they could survive. They did.
With the help of a Netarts oyster grower, that seed population was spawned under controlled conditions to produce millions of tiny oysters to plant in Netarts Bay.
"We put in 6 million and have since replanted the area a couple of different times," Johnson says. "They're flourishing and now re-established where they once were extinct."
A small population of native oysters is now planted in Alsea Bay, near Waldport, and Johnson has also spearheaded efforts to improve the habitat for the remaining population of native oysters in Yaquina Bay. An Army Corps of Engineers dredge has moved old shell, rocks and other hard debris up the bay near to the former Oysterville, where native oysters once thrived.
Robinson says it's hard to believe the progress in just a few years.
"I never believed this would be possible before John came, and I was struggling to do it all by myself," she says.
.
For crying out loud --- proceed to test. Or better yet do in situ bio surveys. But don't ASSUME that the entire ocean volume is gonna spontaneously turn acidic and kill all life because of CO2.
Do allow me to remind you of the case YOU'RE pushing:
.
For crying out loud --- proceed to test. Or better yet do in situ bio surveys. But don't ASSUME that the entire ocean volume is gonna spontaneously turn acidic and kill all life because of CO2.
This nickel & dime comeback is pure bullshit. The point made quite clear by that list of references is that hard research on the effects of acidification on marine life has been, is and will be done in spades. Your contention that no one knows enough to suggest a risk is unsupportable nonsense.
Ocean acidification and emerging diseases in the Pacific Northwest | Roberts Lab
In the Pacific Northwest the environment has changed in a manner that has contributed to increase mortality of bivalve larvae in hatcheries and also appears to have decreased natural recruitment. Several factors have been attributed to this problem including temperature, ocean acidification, and re-emerging pathogens. We are testing the impact of single and multiple biotic and abiotic stressors (i.e. decreased pH) on larval bivalves with a focus the Pacific oyster. In addition, population level effects of ocean acidification will be determined using select SNP markers.
Several local shellfish hatcheries, upon which nearly the entire bivalve culture industry relies, have experienced severe losses (e.g. up to 59%) over the past two years. Several factors have been attributed to this problem including temperature, ocean acidification, and re-emerging pathogens. Given the large-scale environmental change observed in our marine ecosystems and the relationship of host stress response and pathogen virulence with environmental conditions, it is critical to examine the problems facing bivalve larvae from a regional perspective by systematically assessing how the environment influences the spread of disease and the ability of oysters to effectively respond to stress.
More specifically we will test the impact of single and multiple biotic and abiotic stressors on larval bivalves with a focus on the most economically important regional species, the Pacific oyster (Crassostrea gigas). In order to assess the impact of biotic and abiotic environmental factors on bivalve health, we will also assess the abundance of oysters and other larvae in Willapa, Dabob, and Netarts Bays in relation to water quality parameters (pH, temperature, dissolved oxygen, salinity, alkalinity, chlorophyll A, and pathogen load). The specific research objectives are to: 1) Characterize the interrelationship of altered environmental conditions, pathogen, and oyster response under controlled conditions and 2) Identify factors in Pacific Northwest hatcheries and in the wild that are associated with poor oyster larvae survival.
Hey you incredibly insolent moron. I dont lie.
look up C. Gigas on google and apologize.
People who are as topically unprepared as you two ought to be paying us to educate you.
22 different possibilities, and the AGW Church just LEAPS to their favorite conclusions.
Westwall said:What the hell, are you blind as well as stupid? There have been papers on it going back at least to the 1970's.
22 different possibilities, and the AGW Church just LEAPS to their favorite conclusions.
So you're leaving out the part where low pH is directly observed to kill oyster larva in the real world, I see.
Again, 90 years of oyster growing with this species, yet 2005+ is the first time that 100% kills had been seen for many consecutive years. None of your theories can explain the observed data, hence sensible people discount your theories. Ocean acidification is the only theory that explains the observed data, hence sensible people accept that theory.
Westwall said:What the hell, are you blind as well as stupid? There have been papers on it going back at least to the 1970's.
Some scattered pathogen problems are not the same as total dieoffs everywhere for years running. Especially since bacteria and viruses were specifically tested for, and not found. And since the dieoffs stopped completely when only less acidic water is used. This matter is not considered controversial any more, except among political cultists doing their knee-jerk "My cult orders me to disagree with whatever the smart people say!" thing.
This is all reflective of the bigger issue, which is how AGW theory successfully predicts real-world results over and over. That's why it has such credibility. Denialists, unable to predict the real-world successfully themselves, seethe in jealousy. They'd literally prefer that oyster farmers go bankrupt than abandon this particular propaganda crusade.
What a moron. NOAA TRIED to kill baby oysters with 5 TIMES today's CO2 and failed.
Now you're just lying about shit..
Flac, you might want to try debating me instead of just crying about how mean I am. I can't force you do, but when you squeal and run from all my points, it doesn't make you look good.
Let's get back to all of these points you're running from.
Why did you claim Pacific Oysters are new to the Pacific Northwest, when they've been commercially farmed there for 90 years?
Why do you claim one incomplete and inconclusive lab study on a different species overrides real world observations?
Why do you ignore the peer-reviewed studies that disagree with you?
Why do you ignore the fact that in the real world, lower pH seawater was specifically observed to kill oyster larva?
Why do you ignore the fact that mass dieoffs had never happened before 2005?
Why do you ignore the fact that all the usual causes of oyster larva deaths were checked for and not found?
