Shad die-off...normal?

Went fishing at a small (300 acre) lake yesterday & there were thousands of
6-7" shad either floating on top or in the process of dying. Someone told me
this was a normal part of the shad's life-cycle. I thought it curious that
they'd all decide to die on the same weekend.
I don't know if it's related or not, but it was the worst fishing day I've
ever had there. I spoke to several people who said the fishing had been
extremely slow all week. (Two bass, weighing 3.1 lbs. won the local bass
tournament there Tuesday).

--
-------------------
Uncle Dave
Uncle Dave's Fishin' and Lyin' Emporium
http://www.commonfolks.com/UncleDavesFishin

Uncle Dave wrote:

Went fishing at a small (300 acre) lake yesterday & there were thousands of
6-7" shad either floating on top or in the process of dying. Someone told me
this was a normal part of the shad's life-cycle. I thought it curious that
they'd all decide to die on the same weekend.

Shad die off's are due to O2 deficiency, they are the first to go belly
up when the levels drop. This time of year, if it stays over cast for a
few days in a row,, you will get algae blooms that will suck up the O2

I don't know if it's related or not,

Most likely it was very related, for one of two reasons,, it's hard to
get hungry when it's hard to breath,, or the fish have gorged themselves
on the dying shad

--
Rodney Long,
Inventor of the Long Shot "WIGGLE" rig, SpecTastic Thread
Boomerang Fishing Pro. ,Stand Out Hooks ,Stand Out Lures,
Mojo's Rock Hopper & Rig Saver weights, Decoy Activator
and the EZKnot http://www.ezknot.com

"Rodney" . wrote in message
...
Uncle Dave wrote:

Went fishing at a small (300 acre) lake yesterday & there were thousands
of
6-7" shad either floating on top or in the process of dying. Someone
told me
this was a normal part of the shad's life-cycle. I thought it curious
that
they'd all decide to die on the same weekend.

Shad die off's are due to O2 deficiency, they are the first to go belly
up when the levels drop. This time of year, if it stays over cast for a
few days in a row,, you will get algae blooms that will suck up the O2

I don't know if it's related or not,

Most likely it was very related, for one of two reasons,, it's hard to
get hungry when it's hard to breath,, or the fish have gorged themselves
on the dying shad

--
Rodney Long,


A quote: "Oxygen enters the water by absorption directly from the atmosphere
or by aquatic plant and algae photosynthesis."

From:
http://bcn.boulder.co.us/basin/data/...S/info/DO.html

Algae growth creates oxygen. Lots of other things use it up...

--
Andrew Kidd
http://www.amiasoft.com/ - Software for the rest of us!
http://www.rofb.net/ - ROFB Newsgroup Home

Not only that, it's not overcast conditions that cause algae blooms. It's
sunlit days...

Oxygen is a byproduct of the photosynthesis process. Light goes in, O2
comes out. Pretty much keeps us all alive here on the blue planet ;-)

Warren


"Andrew Kidd" wrote in message
news:9nmEc.318$MB3.137@attbi_s04...
"Rodney" wrote in message
...
Uncle Dave wrote:

Went fishing at a small (300 acre) lake yesterday & there were
thousands
of
6-7" shad either floating on top or in the process of dying. Someone
told me
this was a normal part of the shad's life-cycle. I thought it curious
that
they'd all decide to die on the same weekend.

Shad die off's are due to O2 deficiency, they are the first to go belly
up when the levels drop. This time of year, if it stays over cast for a
few days in a row,, you will get algae blooms that will suck up the O2

I don't know if it's related or not,

Most likely it was very related, for one of two reasons,, it's hard to
get hungry when it's hard to breath,, or the fish have gorged themselves
on the dying shad

--
Rodney Long,


A quote: "Oxygen enters the water by absorption directly from the
atmosphere
or by aquatic plant and algae photosynthesis."

From:
http://bcn.boulder.co.us/basin/data/...S/info/DO.html

Algae growth creates oxygen. Lots of other things use it up...

--
Andrew Kidd
http://www.amiasoft.com/ - Software for the rest of us!
http://www.rofb.net/ - ROFB Newsgroup Home

go-bassn wrote:
Not only that, it's not overcast conditions that cause algae blooms. It's
sunlit days...

Oxygen is a byproduct of the photosynthesis process. Light goes in, O2
comes out. Pretty much keeps us all alive here on the blue planet ;-)

Warren


Important primary components of
the ecosystem in a fish production
pond are the microscopic algae, or
phytoplankton. Suspended in the
water, these microscopic, singlecelled
plants are often collectively
referred to as the “bloom.” Like all
green plants, phytoplankton
produce oxygen during the
daylight hours as a by-product of
photosynthesis. This is a major
source of oxygen in fish pond
waters.
Blooms are also responsible for
consuming much of the oxygen
produced. Fortunately, during
daylight they usually produce
more oxygen than they use,
resulting in a surplus for fish and
other organisms. At night or in
cloudy weather, however, production
of oxygen through photosynthesis
ceases or is greatly reduced,
but the consumption rate does not
change, often resulting in a deficit
in the oxygen “budget.” Under
certain conditions, the level of
oxygen can become critically low
and fish may suffocate or at least
become stressed to the point of
being susceptible to disease.

Excerp from http://srac.tamu.edu/466fs.pdf


Gee Guys,, I do know what I'm talking about, before jumpng on my
knowladge,, at least do a search on Google
--
Rodney Long,
Inventor of the Long Shot "WIGGLE" rig, SpecTastic Thread
Boomerang Fishing Pro. ,Stand Out Hooks ,Stand Out Lures,
Mojo's Rock Hopper & Rig Saver weights, Decoy Activator
and the EZKnot http://www.ezknot.com

Andrew said algae growth creates oxygen, and he is correct. Algae ceases
growing without sunlight, and also ceases oxygen production.

I said algae doesn't bloom during overcast periods & that oxygen is a
product of photosynthesis, and I am correct. Photosynthesis doesn't happen
without sunlight.

You said "if it stays over cast for a few days in a row, you will get algae
blooms...". That is incorrect, as you would have already have had your
algae blooms.

Google search, lol.

Warren ;-)

"Rodney" wrote in message
...
go-bassn wrote:
Not only that, it's not overcast conditions that cause algae blooms.
It's
sunlit days...

Oxygen is a byproduct of the photosynthesis process. Light goes in, O2
comes out. Pretty much keeps us all alive here on the blue planet ;-)

Warren


Important primary components of
the ecosystem in a fish production
pond are the microscopic algae, or
phytoplankton. Suspended in the
water, these microscopic, singlecelled
plants are often collectively
referred to as the “bloom.” Like all
green plants, phytoplankton
produce oxygen during the
daylight hours as a by-product of
photosynthesis. This is a major
source of oxygen in fish pond
waters.
Blooms are also responsible for
consuming much of the oxygen
produced. Fortunately, during
daylight they usually produce
more oxygen than they use,
resulting in a surplus for fish and
other organisms. At night or in
cloudy weather, however, production
of oxygen through photosynthesis
ceases or is greatly reduced,
but the consumption rate does not
change, often resulting in a deficit
in the oxygen “budget.” Under
certain conditions, the level of
oxygen can become critically low
and fish may suffocate or at least
become stressed to the point of
being susceptible to disease.

Excerp from http://srac.tamu.edu/466fs.pdf


Gee Guys,, I do know what I'm talking about, before jumpng on my
knowladge,, at least do a search on Google
--
Rodney Long,
Inventor of the Long Shot "WIGGLE" rig, SpecTastic Thread
Boomerang Fishing Pro. ,Stand Out Hooks ,Stand Out Lures,
Mojo's Rock Hopper & Rig Saver weights, Decoy Activator
and the EZKnot http://www.ezknot.com

Gizzard shad do that but I'm not sure if they can live in freshwater. We see
them dying off in brackish waters around here.

--
Bill
Chesapeake, Va


"Uncle Dave" wrote in message
...
Went fishing at a small (300 acre) lake yesterday & there were thousands
of
6-7" shad either floating on top or in the process of dying. Someone told
me
this was a normal part of the shad's life-cycle. I thought it curious that
they'd all decide to die on the same weekend.
I don't know if it's related or not, but it was the worst fishing day I've
ever had there. I spoke to several people who said the fishing had been
extremely slow all week. (Two bass, weighing 3.1 lbs. won the local bass
tournament there Tuesday).

--
-------------------
Uncle Dave
Uncle Dave's Fishin' and Lyin' Emporium
http://www.commonfolks.com/UncleDavesFishin

Bill, gizzard shad are freshwater herring species that can survive in
brackish waters to a point (rather than a sal****er species that can inhabit
fresher waters).

Warren
--
http://www.warrenwolk.com/
http://www.tri-statebassmasters.com



"IBNFSHN" wrote in message
news:BFoEc.3278$fd3.407@lakeread04...
Gizzard shad do that but I'm not sure if they can live in freshwater. We
see
them dying off in brackish waters around here.

--
Bill
Chesapeake, Va


"Uncle Dave" wrote in message
...
Went fishing at a small (300 acre) lake yesterday & there were thousands
of
6-7" shad either floating on top or in the process of dying. Someone
told
me
this was a normal part of the shad's life-cycle. I thought it curious
that
they'd all decide to die on the same weekend.
I don't know if it's related or not, but it was the worst fishing day
I've
ever had there. I spoke to several people who said the fishing had been
extremely slow all week. (Two bass, weighing 3.1 lbs. won the local bass
tournament there Tuesday).

--
-------------------
Uncle Dave
Uncle Dave's Fishin' and Lyin' Emporium
http://www.commonfolks.com/UncleDavesFishin

go-bassn wrote:
Andrew said algae growth creates oxygen, and he is correct. Algae ceases
growing without sunlight, and also ceases oxygen production.

I said algae doesn't bloom during overcast periods & that oxygen is a
product of photosynthesis, and I am correct. Photosynthesis doesn't happen
without sunlight.

You said "if it stays over cast for a few days in a row, you will get algae
blooms...". That is incorrect, as you would have already have had your
algae blooms.

No this is what I said

Shad die off's are due to O2 deficiency, they are the first to go belly
up when the levels drop. This time of year, if it stays over cast for a
few days in a row,, you will get algae blooms that will suck up the O2

Explained
The Algae blooms suck up the O2, when it's been overcast.

You were trying to just disregard the effects of algae blooms and
overcast , as if there was nothing that would cause an O2 deficiency
from them

Of course this the summer reason for shad kills,, the winter kill is due
to water temperature below 40, and the shad go belly up

--
Rodney Long,
Inventor of the Long Shot "WIGGLE" rig, SpecTastic Thread
Boomerang Fishing Pro. ,Stand Out Hooks ,Stand Out Lures,
Mojo's Rock Hopper & Rig Saver weights, Decoy Activator
and the EZKnot http://www.ezknot.com

Some things never change I guess...sigh

--
http://www.warrenwolk.com/
http://www.tri-statebassmasters.com



"Rodney" . wrote in message
...
go-bassn wrote:
Andrew said algae growth creates oxygen, and he is correct. Algae
ceases
growing without sunlight, and also ceases oxygen production.

I said algae doesn't bloom during overcast periods & that oxygen is a
product of photosynthesis, and I am correct. Photosynthesis doesn't
happen
without sunlight.

You said "if it stays over cast for a few days in a row, you will get
algae
blooms...". That is incorrect, as you would have already have had your
algae blooms.

No this is what I said

Shad die off's are due to O2 deficiency, they are the first to go belly
up when the levels drop. This time of year, if it stays over cast for a
few days in a row,, you will get algae blooms that will suck up the O2

Explained
The Algae blooms suck up the O2, when it's been overcast.

You were trying to just disregard the effects of algae blooms and
overcast , as if there was nothing that would cause an O2 deficiency
from them

Of course this the summer reason for shad kills,, the winter kill is due
to water temperature below 40, and the shad go belly up

--
Rodney Long,
Inventor of the Long Shot "WIGGLE" rig, SpecTastic Thread
Boomerang Fishing Pro. ,Stand Out Hooks ,Stand Out Lures,
Mojo's Rock Hopper & Rig Saver weights, Decoy Activator
and the EZKnot http://www.ezknot.com