Title: Florida Lakewatch newsletter
Full Citation
Permanent Link: http://ufdc.ufl.edu/UF00055470/00040
 Material Information
Title: Florida Lakewatch newsletter
Physical Description: v. : ill. ; 28 cm.
Language: English
Creator: Florida LAKEWATCH
Publisher: Dept. of Fisheries and Aquatic Sciences of the Institute of Food and Agricultural Sciences (IFAS) at the University of Florida (UF)
Place of Publication: Gainesville, FL
Publication Date: 2010
Copyright Date: 2010
Frequency: irregular
completely irregular
Subject: Lakes -- Periodicals -- Florida   ( lcsh )
Genre: government publication (state, provincial, terriorial, dependent)   ( marcgt )
periodical   ( marcgt )
General Note: Description based on v. 9 (spring 1997); title from caption.
General Note: Latest issue consulted: v. 33 (2006).
 Record Information
Bibliographic ID: UF00055470
Volume ID: VID00040
Source Institution: University of Florida
Holding Location: University of Florida
Rights Management: All rights reserved by the source institution and holding location.
Resource Identifier: oclc - 65383070
lccn - 2006229159


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VOL_49_June_4_2010 ( PDF )

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Fori a


New Technology for Florida LAKEWATCH

Recently you received an email
from LAKEWATCH with a link ____n.
to a webcast about "Establishing
Numeric Nutrient Standards"
presented by Dr. Canfield. This is
a new technology that is available
to LAKEWATCH and we want to
use this technology to help
inform/educate volunteers about
important lake management
issues. Please take a look at the
webcast presentation and give us
your feed back on whether you
would like to see more of these.
The following is the link and
below information on what your
computer needs to be able to view
the webcast.


Software requirements for
viewing a Mediasite

PC Computers with Windows:
Microsoft Windows XP,
Windows Server 2003, or
Windows Vista.
Microsoft Internet
Explorer 6.0 SP ? or
later, Firefox 2.0 or later,
or Google Chrome 1.0
(Chrome is only


supported on Mediasite
version 5.0.3 and later).
* Windows Media Player 9 or
* For Firefox and Chrome
playback, Silverlight 1.0 or
later (viewers are prompted

to install this when
attempting to view a


Broadband Internet
connection (256 Kbps or
Note: Variable speed
playback is not currently
supported in Silverlight.

Macintosh Computers:

Mac OS X 10.4.8 or later
Safari 2.0.4 or later or
Firefox 2.0 or later.
Silverlight 1.0 or later
(viewers are prompted to
install this when attempting
to view a presentation).
Broadband Internet
connection (256 Kbps or
Note: Variable speed
playback is not currently
supported in Silverlight.

Linux Computers:
As of Mediasite version
5.0.3, playback on Linux
platforms is supported.
Playback of Mediasite
presentations on Linux is
accomplished via the
Moonlight Project, an open
source implementation of
Microsoft Silverlight. For
more installation on the
installation and configuration
of Moonlight, please visit
their page here. The
compatible operating
systems and browsers are
listed on this page.
Microsoft Media Pack for
Broadband Internet
connection (256 Kbps or

Some folks are having no
problem viewing the webcast but
there are a few that we have
heard from, that are still having
difficulty. We are working on
these problems and trying to
figure out how best to make sure
everyone that wants to, can view

these information clips. So this will
continue to be a work in progress. As
we move forward the following are

1) Toxic algae?


some of the webcast topics that
we are considering:

= -u

2) What about muck!

3) Basic water chemistry.

What information would you like, that would help with managing
your lake? Let us know.

To celebrate the
30th anniversary
of the Clean
Water Act, the
Protection Agency
(EPA) launched a
yearlong series of
events in 2003, --
each month
focusing on a
different aspect
of the Clean
Water Act. July
2003 was ,
designated as
Lakes Awareness
Month. In
addition, the
North American
Society (NALMS)
sponsors Lakes
Month each July.
One way the EPA
and NALMS help
support Lake
month is by
supporting the A LAKE
Secchi Dip-In.

This is your invitation to
participate in this year's
Secchi Dip-In, which runs
from June 26 to July 19. This
is the 17th year of the Dip-In,
and the three week event in
June and July demonstrates
that volunteers such as you
can collect quality data for an

..,.... ..- r -:-

-- .

WATCH volunteer measuring Secchi disk visibility in the Florida Ke'

international research
program. The Dip-In is a
network of volunteer
programs and volunteers,
that together gather and
provide continent-wide (and
world-wide) information on
water quality.
LAKEWATCH has been an active
participant in the Dip-In since


Florida volunteers
have provided
information on on
616 Florida
waterbodies. At
least 69 Florida
waterbodies have
more than 5 years
of data
submitted. Five
years or more of
submissions is
S critical because it
takes a minimum
of 5 years of data
in order to make
statements about
North American
volunteers have
submitted 5 or
more years of
data on over
5 1,800
< waterbodies. Of
U those
waterbodies, 202
L2 significant levels
of transparency
change, both
positive and negative. Are
changes in 11% of North
America's volunteer-
monitored waters significant?
It might depend on whether it
is "your" lake or stream that
is changing and in what
direction that change is

Calling All LAKEWATCH Volunteers!

The 17th Annual Secchi Dip-In Begins June 26 and Ends July 19

We already have evidence
that waterbodies showing
decreasing transparency are
sometimes close to ones that
may be improving in
transparency; there is little
evidence of whole regions
changing simultaneously. This
adds to our knowledge about
whether urbanization or
disturbance is changing the
transparency of our lakes, but
also emphasizes our ignorance
of mechanisms of change. It
emphasizes that, yes, more
data is necessary on more
waterbodies for more years.

There are 41 LAKEWATCH
sites that have only 4 years of
data; another year of
participation on those sites
will almost double the number
of lakes in Florida in our
analysis. If you have missed
several years of the Dip-In,
you can enter data for
previous years to "catch up"
with our database.

All of the data are available
on our newly-refurbished
(http://dipin.kent.edu/). You
can retrieve data by state, by
county, or by waterbody. It is
now possible for you to edit
any data that you have
previously submitted or to add
more data, even for previous
years. You now also have the
ability to add pictures of you
and/or your lake and to check
your sampling location on a
satellite map.

Why should you contribute to
the Secchi Dip-In if you send

your data to LAKEWATCH,
and why don't we just ask
LAKEWATCH for the data?
There probably are a number
of reasons, but let me cite
just two. National priorities
for funding of protection and
restoration are set on the
basis of available national
data. You may have heard
recently of the quality of our
Nation's lakes, based on a
random sampling of 1000 lakes
across the US. It will not be
done again for 5 years. The
Dip-In provides the
opportunity to contribute to a
set of data that can provide
annual assessments across
North America.

The second reason to provide
data to the Dip-In is that we
ask some questions that

LAKEWATCH does not ask
and only you can answer about
the quality of your lake. A
major component of lake
management is understanding
of user attitudes about water
quality. What we have found
out so far is that volunteer's
perception of what is meant
by a quality lake varies
radically from one region of
the country to another.

Your participation in the Dip-
In is easy, since we require no
effort more than what you
normally do when you sample
for LAKEWATCH. We also
encourage the involvement of
volunteers that sample rivers
and streams, estuaries, and
marine environments. It isn't
just lakes that are changing
and need monitoring.

For more details. Contact

Bob Carlson

2010 Secchi Dip-In

1091 Munroe Falls Road, Kent, OH


Phone 330.673.9459

E-mail: rcarlson@kent.edu

Or your LAKEWATCH Coordinator

Fish Kills in Florida Freshwater Systems

The most common natural cause of fish kills is due to dissolved oxygen depletion in lake water like this kill
shown here.

Freshwater fishing is one of the
most popular forms of outdoor recreation
in Florida. Each year resident and non-
resident anglers take to the water to land
trophy fish or just to enjoy the sport of
fishing. Some waterfront citizens don't
like to fish but enjoy feeding fish and
watching fish from their docks. Still
other people simply enjoy knowing that
fish are living in a lake acting as a
biological indicator of ecosystem health.
The assumption is that when large
numbers of fish are dying then
something is wrong with the lake.
Therefore, when a fish kill occurs on a
waterbody the general public becomes
alerted and concerned that humans have
somehow caused the kill. Humans have
caused fish kills with chemical spills and
other types of activities and these fish
kills are usually highly visible because
newspapers, radio and television report
big stories about the problem.
Unfortunately, these high profile fish
kills make everyone suspect the worst
when they see fish dying, even though

the majority of fish kills in Florida are
natural events dictated by natural
environmental factors.
Natural causes for a fish kill can be
related to physical processes, water
chemistry changes and/or they can be
biological in nature. The weather is the
primary physical process that causes
dramatic environmental changes that can
lead to fish kills. Cold fronts can change
water temperature quicker than fish can
acclimate causing stress and eventual
death as many of you may have
witnessed this past winter. Wind can
destroy habitat and mix deep water with
shallow water causing changes in water
chemistry quicker than fish can
acclimate also causing stress and
eventually death. Abundant rain can
bring low oxygenated water into a canal,
stream, pond or lake causing fish kills.
Biological causes for fish kills
include toxic algae, viruses, bacteria,
fungal agents and parasites. These agents
are common to every lake in Florida and

generally become lethal only after the
fish is weakened by stress. Stress is
usually caused by a number of factors
including the physical processes and
changes in water chemistry mentioned
above as well as day-to-day factors of
living in the aquatic environment (i.e.
avoiding becoming some other fishes


One type of natural fish kill that is
common in Florida waterbodies is due to
cold temperatures. This type of fish kill
is generally specific to tropical species
that have little tolerance for cold
temperature. For example, the fish
species blue tilapia, which is an exotic
fish from the Nile River, was
accidentally introduced into Florida.
Blue tilapias now have successful
reproducing populations in 18 counties.
The distribution of blue tilapia is limited
by their sensitivity to low temperature so

zS '
a. l? -

they are rarely found in lakes north of
Central Florida (i.e. Gainesville Florida).
Blue tilapia stop feeding when the water
temperature gets down to about 600F and
they die when it reaches 450F. Thus,
when severe cold fronts, like the ones
Florida saw this past winter, drops water
temperatures in southern Florida it can
cause fish kills of blue tilapia. This type
of fish kill is easily identified because it
generally happens after extended cold
weather and all of the dead fish will be
cold intolerant fishes such as blue tilapia.
Another type of fish kill that is
natural and common in Florida
waterbodies occurs to fish after they
spawn. Some fish will spawn year round
in Florida but generally there is a peak
from January through April. When fish
spawn they use a tremendous amount of
energy in courtship behavior, building
nests, releasing eggs and milt, and in
some cases defending the young. After
this period the fish are weak and any
change in the environment may stress
and kill the fish. A fish kill due to
spawning stress will generally be
composed of one or two species of fish
that are adults, possible with red soars on

the body. This type of fish kill is most
common in the springtime and early
summer when the majority of the fish are
The most common natural
cause of fish kills is due to dissolved
oxygen depletion in lake water.
Dissolved oxygen refers to oxygen gas
that is dissolved in the water. Fish
"breathe" oxygen just as you and I do.
However, fish are able to absorb oxygen
directly from the water into their blood
stream using gills, whereas you and I use
lungs to absorb oxygen from the
Oxygen is dissolved into the
water from two sources--the atmosphere
and photosynthesis. Oxygen naturally
dissolves slowly from the atmosphere
into water; however, wind and wave
action can help accelerate the diffusion
process. Photosynthesis also adds
oxygen to the water column.
Photosynthesis is a process where
oxygen is produced by algae and aquatic
plants when they use carbon dioxide,
water and sunlight to make food.
Dissolved oxygen is removed
from lakes by natural biological activity

in the water column. Algae, fish, insects,
zooplankton, bacteria and aquatic plants
use oxygen from the lake water for
respiration. For this reason dissolved
oxygen increases during daylight hours
(when the algae and aquatic plants are
producing more oxygen than is being
used by the natural biological activity of
the lake) and declines throughout the
night until just before daybreak (when no
oxygen is being produced).
The temperature of the water
will affect how much dissolved oxygen
the water can hold at a given time. Cool
water can hold more oxygen gas in
solution (dissolved oxygen) than warm
water. Not only does warmer water hold
less oxygen than cooler water, but also
warmer water increases the metabolic
rate of fish increasing their oxygen
demand to just complete their normal
physiological functions. Both the
physical phenomenon of warmer water
being able to hold less dissolved oxygen
than cooler water and the fact that fish in
warmer water need more oxygen than
fish in cooler water puts the fish in
double jeopardy when the temperature of
the water increases.

The most


natural cause

of fish kills is

due to



depletion in

lake water.

A dead chain pickerel on Orange Lake in Alachua County following a fish kill.

Although oxygen depletions
can occur at anytime, they are most
common and likely to cause fish kills
during warm summer months (when
warmer waters hold less oxygen), cloudy
weather (which decreases the amount of
light available for algae and aquatic
plants to produce oxygen through
photosynthesis), and during algae and
aquatic plants die-off (algae and aquatic
plants are the most important producers
of oxygen in a lake).
Severe oxygen depletion can
also occur after heavy thunderstorms
during hot weather warm waters hold
less dissolved oxygen than cooler water
and extended dry periods can lead to a
buildup of organic matter that can runoff
into the waterbodies increasing the
amount of decomposition occurring in
the water. This increased decomposition
uses up more oxygen and can lead to
oxygen depletion in the water resulting
in fish kills.
Additionally in the summer
months, surface waters warm more
rapidly than deeper water. This
temperature difference causes a
temporary "barrier" to develop between
warm water at the top (which is full of
oxygen due to photosynthesis and
atmospheric exchange) and cool water at
the bottom (which is devoid of oxygen
due to no photosynthesis or atmospheric
exchange). A heavy wind or cold rain,
which occur commonly during the
summer thunderstorms in Florida, can
break the barrier and cause mixing
between the two layers. The oxygen-rich
surface water mix with the oxygen-
deficient bottom waters. If the oxygen
demand of the bottom waters is
sufficient, most dissolved oxygen
present will be rapidly removed from the
water column, resulting in a fish kill.
A dissolved oxygen
concentration above 5 mg/L (or 5 parts
per million) is generally recommended
for optimum fish health. Fish become
stressed severely at dissolved oxygen
concentration below 2 mg/L and begin to
die when concentration levels fall below
1 mg/L. Oxygen depletion severe enough
to result in significant fish mortality is
more likely to occur in water with heavy
populations of aquatic plants and/or
algae. When a fish kill is caused by
oxygen depletion fish of every species
die approximately at the same time.
Usually large fish are affected before

Phosphate mining caused
Alafia River in 1997.

small fish that are often seen "gulping"
or "gasping" at the surface of the lake.
The weather immediately prior to the
fish kill may have been hot, still, and
overcast or stormy.
The final type of natural fish
kill is due to fish diseases and parasites.
Fish contract parasites and diseases just
as humans do. Fish parasites and
diseases that occur naturally in Florida
lakes include viruses, bacteria, fungi,
protozoans, crustaceans, flukes and
tapeworms. A healthy strong fish is
usually able to defend itself against most
fish diseases and parasites. A stressed
fish, however, may be successfully
attacked by fish parasites and diseases
resulting in fish mortality.
Fish infected with parasites
and/or diseases may have physical clues
on their bodies or may display abnormal
fish behavior. Some physical clues can
be very obvious, such as open sores on
the body, missing scales and/or lack of
slime and strange growths on the body,
head or fins. Abnormal behavior of
infected fish are swimming weakly,
lazily, erratically, or in spirals;
scratching or rubbing against objects in
the water; twitching, darting, or having
convulsions; failure to flee when
exposed to fright stimuli; gasping at the
water surface or floating head, tail, or
belly up. When physical problems or
abnormal behavior is observed it is
necessary to capture some of the suspect
fish for closer examination. It is

a fish kill in the

important to look at live fish when
examining a health problem. Dead fish
decompose quickly, obscuring the
physical clues of the cause of death.
The possible causes of non-natural fish
kills are numerous. Many chemicals and
other substances that are dumped, spilt
or leaked into a lake can cause fish kills.
The amount of "contaminates" entering a
lake, though, would have to be large
because the large volume of water in the
lake would dilute the toxicity of the
"contaminates". There are often
noticeable signs of a "contaminate"
entering the lake, such as a film present
on the water surface or the color or
clarity of the water has changed, strange
odors, and drums or containers of
unfamiliar substances near shore.
Usually with non-natural causes of fish
kills, investigation of the local area and
observations recording any changes
noticed in the water quality can direct
investigators to the possible
contamination source responsible for the
fish kill.
Fish kills are a fact of life and
many things can cause them! The
important thing to remember is that the
majority of fish kills in Florida are due to
natural causes and that if a human
induced source is involved then it will
usually be evident.

Volunteer Bu lt Boar


The Florida Legislature
has passed the budget
for fiscal year 2010-2011
and Florida LAKEWATCH
has remained in the
budget at $275,000, the
same amount as the
previous fiscal year. As a
result, we ask all of our
volunteers to continue
sampling at the
frequency that you
sampled last year.

A special thanks to all of
our volunteers who
contacted their
legislators to let them
know how important
Florida. You helped
make a difference and
we are very thankful!

Update Your


We are updating our
records. If you are
not a primary
sampler but would
like to remain on
our mail list,
please call 1-800-
525-3928 so that we
can update your
information. We are
purging our mail
list and will remove
any non-primary
samplers from the
mail list unless we
hear from you.

Thank you,


Life History of Bay Scallops (Argopecten irradians) in Florida Waters
An article by the Florida Fish and Wildlife Conservation Commission

In Florida, bay scallop populations
that comprise the Argopecten
irradians metapopulation (a
population composed of smaller,
isolated local populations) have
historically occupied bays and near
shore waters from Palm Beach to the
Chandeleur Islands in Louisiana. In
recent decades that range, and the
abundance of individuals comprising
the populations occupying that range,
has contracted considerably. Scallops
are now rare or non-existent in
southeast Florida and in areas west of
St. Joseph Bay in the Florida
panhandle. Moreover, areas such as
Pine Island Sound, Sarasota Bay,
Tampa Bay, and Pensacola, which
once harbored very dense scallop
populations, now support few if any
individuals. Essentially, until 1999
only Steinhatchee and St. Joseph Bay
harbored healthy scallop populations.
Bay scallops occur in discrete "local"
populations that are isolated from
neighboring populations by areas of
inhospitable habitat (e.g., salinity <
20 psu, no seagrass). Most members
of each population only live for 12-
18 months; although, a small
proportion of each year class may
survive for 24 months or more. Thus,
each population must replace itself, or
receive offspring from neighboring
populations sufficient to replace
itself, each year. Because individual
scallops only live for about one year,
population fluctuations are extreme
and the collapse of local populations
is a natural feature of bay scallops in
Florida. As a result, the stability of
scallop populations in Florida is
realized at the metapopulation level,
not the local level. That stability
derives from the existence during any
year of multiple local populations
throughout the state; although, the
location of those individual
populations may change from year to
year. It is reasonable to assume that
increasing the number of healthy
local populations extant during any

year increases the stability of the

In Florida waters, bay scallops appear
to spawn only once, generally during
fall; although, recruitment
monitoring by FMRI staff indicates
settlement of larvae beginning in
August of each year and extending
through May of the following year.
Larval scallops are pelagic (living in
the water column rather than on the
bottom) for 10-14 days. During that
time they may be dispersed a
considerable distance from the source
population. The pelagic dispersal
phase connects local populations and
is the critical link in maintaining the
metapopulation. Any local population
that becomes disconnected from this
linkage will eventually become
extinct unless that linkage is

The Bay scallop (Argopecten irradians).

To assess the status of bay scallops in
Florida waters, we conduct adult
population surveys during June of
each year at various sites along the
Florida west coast. Survey sites
include Pine Island Sound in
Charlotte Harbor (PIS), Anclote
Anchorage near Tarpon Springs
(ANC), the coastal waters of Pasco
and Hernando Counties (HER),
coastal waters in the vicinity of the
Homosassa and Crystal Rivers
(HOM), the Steinhatchee area (STN),
St. Joseph Bay (SJB), and the
Crooked Island Sound/St. Andrew
Bay estuarine complex (SAB). At
each site, we conduct transect surveys
at 20 randomly located stations. Each

transect survey consists of paired
scuba divers swimming either side of
a 300-m transect line and counting all
scallops within 1 m on each side of
the line. Thus, we count scallops
within a 600-m2 area at each station,
and we sample a 12,000-m2 area at
each site. Surveys have been
conducted since 1994 at most sites;
although, we did not begin sampling
the Hernando area until 1997
(Figure 1).
Using the results of our transect
surveys, we apply the following
criteria to determine the health of a
local scallop population:
1) Abundance: In a healthy scallop
population, mean population density
generally exceeds 25 scallops per 600
m2 transect. Mean population density
below 5 scallops per transect
generally suggests a collapsed
population. Mean density between 5
and 25 scallops per transect suggests
a transitional population.
2) Distribution: Scallops should be
widely distributed throughout the
sample area. We sample 20 stations at
each study site, and we expect to
recover scallops from a minimum of
10 of those stations in a healthy
3) Resilience: Even healthy scallop
populations fluctuate in abundance
from year to year, but a healthy
population should recover from a low
point within one or two years. Good
examples of resilient populations
include Anclote and Steinhatchee, but
the resilience of the St. Joseph Bay
population is currently unknown.
Prior to 1985 there were no statewide
regulations regarding the harvest of
bay scallops in Florida waters;
although, local rules applied in Bay,
Gulf, and Pinellas Counties. In 1985,
the Florida Marine Fisheries
Commission instituted statewide
regulations (Rule 46-18), governing
the harvest of scallops and
simultaneously repealed all local
rules. Those statewide regulations

included a closure of the fishery
between April 1 and June 30 of each
year and a recreational bag limit of
five gallons of whole scallops, or 1/2
gallon of meat per person per day.
Limits were also placed on the size
and number of drags that could be
used by vessels harvesting scallops
for commercial purposes, and
restrictions were placed on
commercial harvest in the south end
of St. Joseph Bay. In 1994, there was
an emergency closure of the bay
scallop fishery in response to the
perceived collapse of bay scallop
populations in many areas of Florida.
All state waters were closed to
commercial harvest, and the
recreational fishery was closed south
of the Suwannee River. Additionally,
the length of the recreational harvest
season was reduced to three months
(July-September). A formal
modification of bay scallop harvest
regulations, which continued both the
commercial and recreational closure
south of the Suwannee River, was
instituted in 1995. The 1995
regulations also included a more
included a closure of the fishery

between April 1 and June 30 of each
restrictive individual bag limit (two
gallons of whole scallops or one pint
of meat per person per day), a boat
limit of 10 gallons of whole scallops
or 1/2 gallon of meat per boat per
day, and a further reduction of the
season to July and August of each
year. In 1997, the season was
lengthened by 10 days (July 1-
September 10); otherwise, the 1995
regulations remain in effect.
The goal of the 1994 bay scallop
management modifications is
restoration of local populations in an
effort to further stabilize the
metapopulation. To achieve this
objective, between 1997 and June of
2002, FMRI scientists conducted a
federally funded program to restore
bay scallop populations in Florida
waters. FMRI's initial efforts
targeted the most recently collapsed
scallop populations, those between
Anclote and Crystal River, because
those populations were in close
proximity to the relatively healthy
Steinhatchee population.

A resurgence of scallop populations
has been observed in the area from
the Weeki Wachee River north to
Crystal River. From 1993 through
1996, the Homosassa scallop
population averaged less than eight
scallops per 600 m2 transect during
June of each year and density
decreased during each successive year
(Figure 1). A slight, 15 scallops per
transect, resurgence in scallop
abundance was recorded in 1997.
Numbers again fell during 1998,
probably as a symptom of degraded
coastal water quality during that year.
Scallop abundance increased
substantially during 1999
(2' Ii. ii, i 2000 (243/transect), and
2001 (299/transect). Genetic
evidence and the initial increase in
abundance observed during 1997,
prior to any restoration activities,
suggest that management rather than
restoration may have fundamentally
influenced this resurgence.
Regardless, there are substantially
more scallops in the area between
Weeki Wachee and Crystal River
than were observed during the 1990s.




Q 200

__ 150





Figure 1. Bay scallop (Argopecten irradians) adult density estimated for various sites along the Florida west coast between
Pine Island Sound and St Andrews Bay during June every year. The density estimate for each year at each site is
calculated as the average number of scallops counted along twenty randomly allocated 300-m transact lines. At each transect
station, SCUBA divers swim either side of the 300-m transact line and count all scallops within 1 m of the line. Thus, total area
sampled at each transect station is 600 m', and total area sampled at each site each year is 12,000 m'.
PIS-Pine Island Sound, ANC-Anclote, HER-Hemando, HOM-Homosassa, STN-Steinhatchee, SJB-St Joseph Bay,
SAB-St. Andrew BaylSound. Horizontal dotted line depicts mean density of 25 scallops per transect.


Outstanding LAKEWATCH Volunteer

John Clark shared his time
between Ramrod Key, Florida and
Ocean Shores, Washington. He
has been a LAKEWATCH
volunteer and wrangler for the
Ramrod Key sampling group for 9
years. John and the other Ramrod
samplers were trained in 2001 and
they have taken samples on 10
sites for approximately 108

John was born
in Seattle
and grew up
on the edge of
Shilshole Bay
where he
developed a
love of the sea
and all the
surrounding it.
John was in
the Navy until
1945. He
enrolled in the
University of
and studied
sciences after
sciences after ohn Clark makes his po
leaving the
Navy where he graduated in 1949.

After graduation he worked at
Woods Hole until, in the 1960's,
he became the assistant director
of the Sandy Hook Marine
Laboratory in New Jersey. In
1970 he became the director of
the Narragansett Marine
Laboratory in Rhode Island. From

Rhode Island John moved to
Washington, D.C. when he
became a senior associate with
the Conservation Foundation,
where his involvement with
coastal zone conservation
policy was influential in the
Federal Coastal Zone
Management and Clean Water
programs. In the 1980's he
returned to a government job in

int at the Monroe County LAKEWATCH Regional meeting ir
the International Affairs Office
of the National Park service.
There he dealt with research,
planning and training projects
in coastal zone management in
many developing countries. He
retired in 1987, but still worked
as a consultant on coastal zone
management, working in more
than 30 countries.

He had the title Honorary
Conch" conferred on him by
Monroe County
Commissioner George
Neugent, for his civic
activities. He has written more
than 130 papers and authored
or co-authored 27 books, the
most notable of which are
"Coastal Ecosystem
Management" (1977),
"Coastal Zone
(1996), and
"Coastal Seas,

He has been
the president of
Beach Civic
twice. He
worked on
installed on
Ramrod Key to
December 2002. increase
circulation in the canal
systems and formed a
water quality assessment
program for the waters
around Ramrod Key,
working with the
University of Florida's
LAKEWATCH program.



Fisheries and Aquatic Sciences
School of Forestry Resource Conservation
7922 NW 71st Street
Gainesville, FL 32653

John (closest in the picture) observing has data at the 2002 Key's Regional meeting.

John passed away April 5,
2010 at the age of 83. He is
survived by his wife Catherine
" Catie" and his 4 children, 8
grand children and 1 great-
grandchild. Everyone who
knew John loved and
appreciated him. He was a

unique person. He will be
greatly missed by his family and
all the people that knew him.
We want to acknowledge John's
time and effort he gave to the
Florida Keys, the
LAKEWATCH program and

Elorida '

This newsletter is generated by the Florida
LAKEWATCH program, within UF/IFAS Support
for the LAKEWATCH program is provided by the
Florida Legislature, grants and donations For more
information about LAKEWATCH, to inquire about
volunteer training sessions, or to submit materials for
inclusion in this publication, write to
Fisheries and Aquatic Sciences
School of Forest Resources and Conservation
Gainevlle FL 32653
E-mail fl-lakewatch@ufl edu
http //lakewatch ifas ufl edu/

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written material must include contributor's name,
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necessarily reflect the opinion or policy of the Florida

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