Title: Myakka
Full Citation
Permanent Link: http://ufdc.ufl.edu/UF00089449/00009
 Material Information
Title: Myakka
Series Title: Myakka
Physical Description: Serial
Creator: Department of Soil and Water Science. Institute of Food and Agricultural Sciences. University of Florida.
Publisher: Department of Soil and Water Science. Institute of Food and Agricultural Sciences. University of Florida.
Publication Date: Summer 2003
 Record Information
Bibliographic ID: UF00089449
Volume ID: VID00009
Source Institution: University of Florida
Rights Management: All rights reserved by the source institution and holding location.


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A Soil and Water Science Department Publication

Volume 3 Number 2 Institute of Foodand Agricultural Sciences Summer 2003

In a series of
starting with this
issue, we will
present select
examples of the
Soil and Water
Science Depart-
ment's (SWSD) research and outreach
activities in various regions of the state. In
each of these regions our faculty conduct
research in a wide range of ecosystems
with emphasis on water quality. This issue
of Myakka presents a brief summary of our
research and outreach activities in the

Historic Everglades included a river of
sawgrass and sloughs approximately 80 km
wide with shallow water depth. Water
flowed unimpeded from Kissimmee River to
Lake Okeechobee through Everglades to
Florida Bay. Modern-day Everglades is
more complex with canals, dikes, high
density of urban development, and intense
agricultural practices. The natural
Everglades contributes to South Florida's
water supply, flood control, and recreation,
while supporting diverse species of wildlife
and vegetation. The Everglades Forever
Act (Florida Statute No. 373.4922) states
that "the Everglades ecosystem must be
restored in terms of water quality and water
quantity and must be protected in a manner
that is long term and comprehensive".
Everglades restoration can be framed into
interrelated factors: water quantity, water
quality, timing of water flows, and
distribution of water. Our research focus is
on water quality in agricultural and natural
areas of the Everglades.

The SWSD has been very active in
addressing soil and water quality issues in
the Everglades. Our faculty at the

Tropical REC has been active in
developing management practices to
improve nutrient use efficiency and water
quality in calcareous soils used to grow
various tropical crops. Our faculty at the
Everglades REC have long been
interested in subsidence of organic soils.
Currently this group is involved in
developing best management practices for
sugarcane and other crops grown on
organic soils, with the goal of reducing
nutrient loads and improving water quality.

In natural areas of the Everglades, our
research included the measurement of
spatial and temporal distribution of
nutrients, historical nutrient accumulation
rates, and biogeochemical indicators to
evaluate nutrient impacts in the
Everglades. State and federal agencies
formulating policy and regulation and
developing management strategies to
protect these natural resources now use
the results obtained from these studies.

We recognize the complexity of the
Everglades issues and the importance of
interdisciplinary approaches in addressing
soil, water, and environmental issues in this
region. We see great potential for UF to be
a major player in research and education in
the Everglades restoration. This requires
programmatic team building on UF campus
to effectively compete for grant and contract
funds in this region. We have developed
effective collaborations with faculty in other
UF departments and with the state and
federal agencies working in the region.
Through our research and extension
programs, we will make efforts to have a
strong presence in this region in addressing
soil and water quality issues related to the
Everglades restoration.

kR~ )

Dr K. Ra mes Redy Ch.Sa ir SoB-H0 0il an d WaterS cieceDea rtme nN HllB
3261. Tlepone 35-39-180-, ax:352392339. Em ail: krr^ufl^edu http://soils^ifas^ufl^edu


The Everglades

Pam Marlin
Dr. Vimala Nair

Visit the SWS website:

Summer 2003
Puja Jasrotil MS 4cfusoi "C Ogram

Ye.. n Grace MS Adwsoi'. J White
Ra.indra Ramnarne M.S 4daisor VV

Christine Bliss PhD Ad\usor. I
Eric Bro...n PhD 4datisor J Sartain
Hector Castro. PhD. Adusor. A C',gram
Raymond Snyder PhD 4A isoI J

Florida's Wetland WebGIS
and Geo-Database

Thousands of soil samples have been
collected in Florida's wetlands by staff
and scientists of the Wetland
Biogeochemistry Laboratory (WBL),
UF. To preserve, standardize and
centralize these datasets of soil
physical, chemical, and biological
properties a seed project funded by
the Center for Natural Resources
facilitated to develop a web-based,
interactive information and
visualization system, by Sabine
Grunwald, SWS-GIS Research
Laboratory. Soils data collected in
various hydrologic units of the
Everglades can viewed at
http://GISWetlands.ifas.ufl.edu. For
additional information, contact Sabine
Grunwald, SGrunwald@ifas.ufl.edu.

Fourth Annual
Soil and Water Science Department Research Forum
The Fourth Annual Soil and Water Science Research Forum was held on September 4, 2003,
in Gainesville, Florida. The forum was attended by all faculty and graduate students of the
department, and representatives from state and federal agencies, and private industry. Dr.
Jimmy Cheek, Dean for the Academic Programs, addressed the group on the role of SWSD
in overall educational programs of College of Agricultural and Life Sciences. Dr. James
Davidson, Emeritus Vice President for Agriculture and Natural Resources, gave a key note
lecture on his vision for soil and water science and role of young scientists. The complete
lecture can be viewed at: http://soils.ifas.ufl.edu/forum. Graduate students and post-doctoral
fellows presented 8 oral and 40 poster presentations. Two best oral and 5 best poster
presentation awards were presented. Winners of oral presentations were: K. Makris,
W. Harris and T. Obreza advisors, and C. Penton, S. Newman and K. Reddy advisors.
Winners of best poster presentations were: E. Dunne, K. Reddy advisor, D. Herrera, R.
Mylavarapu advisor, G. Kertulis, L. Ma advisor, S. Simon, J. White advisor, and I. Uz, A.
Ogram advisor.

The Soil and Water Science Department offered three short courses:

Hydric Soils: W. Hurt and W. Harris. This exclusive training program focused on
the interrelations of hydrology and hydric soils and how to distinguish hydric soils
from nonhydric soils. Wade Hurt, wade_hurt@ifas.ufl.edu.
GIS Applications in Soil and Water Science: S. Grunwald. This exclusive training
program focused on how to make use of readily available geo-data layers of soils,
geology, land use, and topography. Sabine Grunwald, sgrunwald@ifas.ufl.edu.
Biogeochemistry of Wetlands: Science and Applications: M. Clark, J. Delfino, R.
Gambrell, W. Hurt, P. Inglett, R. Reddy, and J. White. This short course provided
training to professionals on basic concepts involved in biogeochemical cycling of
nutrients and other contaminants in wetlands, as related to soil, water, and air quality.
Ramesh Reddy, krr@ufl.edu.

A total of 100 professionals attended these 3 courses. The Hydric Soils and GIS
courses are scheduled to be offered during summer 2004. In addition, a new course
entitled, Basic Soils An introduction, is scheduled for offering during March 9-10,
2004. Details of these courses can be seen at http://conference.ifas.

The E.T. York Lecturer Dr. Pedro A. Sanchez

The SVVSD i..ll host Dr. Pedro A. Sanchez during his sit to UFiFFAS as the 2003
E T 'ork Lecturer Dr Sanchez. the 2002 World Food Prize laureate, and a 200
MP.ac rthur Fellov.. is Director of Tropical agriculturee and Senior Research Scholar at the
Earth Institute of Columbia Lni ersity in Jle i ork Cit). He also ser es as coordinator of
the Hunger Task Force of the United NJations' r.illennium De..elopment Project Sanchez
served as Director General of the Vorld "groforestry Center I ICR"F I headquartered in
rNairobi. Kenya from 1991-2001

Dr Sanchez's visitt is scheduled during the week of iio.ember 11-14. 2003 Dr Sanchez
.,.Ill present the E T ork lecture at 10 .0 am on Thursday, I o ember 13 2003 in Rion
Ballroom Reitz Union, at the Uni..ersity of Florida The topic of his presentation is
entitled "Ending hunger in Africa: What needs to be done" For additional information
on the Dr Sanchez .isit contact Ramesh Reddy at krr@ufl edu


At present there are several on-going projects in the Everglades including developing nutrient management practices for crops grown on
calcareous soils and in the Everglades Agricultural Area (EAA). Projects in natural areas include: Water Conservation Areas, Storm Water
Treatment Areas, and the Everglades National Park (ENP). Here are few examples of the SWSD research programs in the Everglades
On-Farm Research in the
Soil Phosphorus Monitoring in the Everglades Everglades Agricultural Area
The purpose of this study is to determine: (i) spatial distribution of soil P in The research conducted by UF/Fl AS at E..erglades
selected hydrologic units of the Everglades including: Water Conservation EREC represents the most comprehensi..e ongoing
Areas (WCA-1, WCA-2a, and WCA-3), and ENP, (ii) calculate long-term research program regarding Best Management Practices
changes in soil P storage, and (iii) develop spatial maps using geostatistical iEMPF effect ..eness in the E erglades Agricultural Area
techniques. This massive sampling includes approximately 1700 stations E".A Basin south of Lake ,O eechobee Ten farms
distributed in various hydrologic units including: water conservation areas, ranging in size from appro inmately 1 30 ha to 1.86.0 ha
Holyland and Rotterberger conservation areas, ENP, and Big Cypress. This ha e been studied in an attempt to de elop and .enrif the
project is funded by the South Florida Water Management District and effect eness of BP.Ps for reducing total phosphorus i TP
Comprehensive Everglades Restoration Program (CERP). Investigators in loading in the EA~ Basin Land use on the selected
this project are: Mark Clark, Sabine Grunwald, Sue Newman, Todd Osborne, farms .aries from monocultures of sugarcane and
and Ramesh Reddy. For additional details contact Ramesh Reddy at .eetables to multi-cultures of egetables rice. sod and
krr@ufl.edu. sugarcane Organic soils pre all in the E ."" VVater
management practices that pro ed most effect e
included making internal drainage impro events to the
Overview of sampling sites farm to allo more uniform drainage Particulate P
q 13o accounts for 20 to 70':', of TP reported from E ."" farms
s. i and is frequently the cause of spikes in TP loads .
S- o .significant fraction of particulate P in the E"" originates
,': -'' from In-stream biological gro,.th rather than from soil
-I erosion

S." managementt practices that are recommended by the
study to control particulate P in discharges include
H"." practices that reduce or minimize the Occurrence of
S o continued high o.elocities in the canals ..hile pumping
'"' water r to drain fields "ggressi e ..eed control programs
in the main canals are the most product..e in reducing
the supply of transportable high P content biomass
-- Relocating sediments upstream from the pump house is
SII aalso recommended in conjunction ..ith irrigation e ents
m'""M' The research projects at EREC confirm the effect eness
=m m= O" I'Cl*c* of existing BMPs as _..ell as pro.'ide direction on areas of
1 ,,,,-.. uy, .,,r .. f future research Future focus includes e..aluation of the
Sm m rt,, >active biological and chemical interactions that flourish in
mlsmlp ,,w,,,,,_ the ecosystems south of the E"" so that relationships
..... .K .' between P lea ing the EA. and its e..entual do,..nstream
II .... T...,LUr... .... '- B points can be de eloped For additional information
I 1N ,, ,,u~,L ......... contact Samira Daroub at SDaroub@ifas ufl edu

M mptsnactgTR 1Inin A 4 1

Microbial and Biogeochemical Indicators of Restoration in the Hole-in-the-Donut
The Soil Molecular Ecology Lab and the Wetland Biogeochemistry Lab recently initiated a new
project with SWSD courtesy professor and Department of Interior soil scientist Mike Norland to
study development of microbial communities and attendant biogeochemical cycles in the Hole-in-
the Donut area of the Everglades National Park. The Hole-in-the-Donut was farmed until the
1970s, and the exotic plant Schinus terebinthifolius, commonly known as Brazilian pepper or
SFlorida holly, invaded the area when the farms were abandoned. Removal of Brazilian pepper
requires complete removal of soil, leaving only the white calcium carbonate substratum remaining.
Restoration is left to natural processes, which provides an outstanding opportunity to study the
development of microbial communities and biogeochemical processes in this area, and to develop
and test microbial and biogeochemical indicators of successful restoration. The PIs on this
project are Andy Ogram and Ramesh Reddy. For additional information contact Andy Ogram at

Soil Accretion and Development of the Everglades

A three-year study is underway in
the Florida Everglades to
investigate soil accretion
processes and their influence on
the spatial vegetative mosaic of
Shark River Slough. Historically
this landscape pattern had a
prominent orientation parallel to
the direction of flow. This pattern
is still prevalent in many areas;
however, the "Ridge and Slough"
landscape has shown signs of
decline in linearity, senescence of
ridge vegetation and encroachment of ridge and wet prairies species into the deeper
water sloughs. As part of the monumental effort to restore the Everglades,
maintaining the Ridge Slough landscape is critical not only to the representation of
pre-disturbance conditions, but also to many species including fish, water fowl, and
alligators that utilize the deeper water slough community and benefit from the
tremendous edge effect provided by the interface between ridge and slough areas.
Because the vegetative community of the Everglades is intimately linked to soil
elevation and hydrology, understanding processes related to soil accretion are
critical to short and long term restoration efforts. For more information contact
Mark Clark at clarkmw@ifas.ufl.edu.

Nutrient Management for Tropical Fruits and Vegetables
Soil and Vater Science program at Tropical REC focuses on de eloping management practices to impro e nutrient use efficiency plant
nutrition and water quality nutrient cycling in calcareous Soils, and determining impacts of agriculture on South Florida s natural
ecosystems Details of this program can be ie,.'.ed at http ./yuncong ifas ufl edu One example of research program is on Lychee iLitchl
chilensis Sonn I fruit is gaining popularity and has become a high ..alue crop in south Florida ,.ith sales of o 'er S20 million per year
Unreliable flo..iering and fruit set seriously impact lychee production in Florida and throughout ..orld VVe found that the lack of maturity of
late 'egetati..e flushes in the late fall or early 'inter pre ents flo ering and that low', nitrogen concentrations in the lea es reduced
egetati e flushing and increased flo 'ering and yield These disco series enabled us to recommend effecti..e correcti..e measures For
additional information contact Yuncong Li at yunlli@fas ufl edu

James Bonczek is appointed as Lecturer in Soil and Water Science. In this new role, James will teach laboratory sections of
introductory soils course offered both at undergraduate and graduate levels and teach a new undergraduate general education course
(submitted for approval) entitled "The World of Water".

Jerry Sartain was awarded the 'Wreath of Grass' by the Florida Turfgrass Association (FTGA) at their annual meeting in September,
2003. This is the highest award that the FTGA awards and it has not been given to scientists working at universities for the past two

Ann Wilkie was appointed to the National Pork Board's newly formed Public Health and Worker Safety Advisory Group in June 2003.
The Advisory Group will deal with issues such as the health effects of odor, water and air microbial contamination, and worker safety in
livestock production.

SWS Alumni
VVe are in mne process of Lupdaing Co'nl3CI informnilo'n Please isil O.ur ,inebsiIe 3nC upd13le Our conlacI infoirmalioIn if /ou d0o not ha..e access I,:, te
,in,,ebSie Ou c3an sendl us Mte upLdlaeld informalion In LOur luluLre ne 'seleers 1 e *OLII lie II: I inc:lue alumni ne, -s So: please send us information Lnal youL
,...ould Iike t' share ,iulh /:'ur friends and ,colle: agues

Symposium on
Nutrient Management in
Agricultural Watersheds:
A Wetlands Solution

The Unimersity of Florida-iF"S and Teagasc
Research Center Johnsto ,n Castle. Co
VVWeford Rep of Ireland are jointly hosting an
international symposium on Jutrient
Management in agricultural Watersheds ,
Wetlands Solution scheduled for May 24-2',
2004 We, ford Ireland The Symposium ,.ill
pro ide a forum for synthesis and interpretation
of current status on the role of wetlands to
impro .e .ater quality in agricultural catchments
For additional information contact Ramesh
Reddy at krr@ufl edu


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