Question: How many, and what type of trees have you
planted on your Energy Crop Tree Farm in central Florida?
Answer: Approximately 250,000 trees have been planted --
~60% in eucalyptus trees (E. grandis, E. amplifolia) and ~40% in
cottonwood trees that are native to Florida.
Question: By planting eucalyptus trees (that originate
from Australia), aren't you harming
the environment by using an exotic (i.e., a
non native species to Florida)?
Answer: Just because a plant was not present when
European
Settlers arrived in America (about 1500) does not mean its
something bad.
Approximately 98% of everything we eat comes from
exotics/non-natives -- such as the
orange tree, which
originates from Africa.
Question: Is there a difference between exotics?
I've read about exotics such as the Melaleuca tree
introduced in the Everglades causing tremendous environmental
harm.
Answer: Yes, there is a big difference between
a non-invasive exotic (such as an
orange tree) and an
invasive exotic. Invasive Exotics (such as melaleuca trees and
cogongrass)
can be very harmful by speading/invading into native habitats.
Question: What makes invasive exotics harmful to the
environment?
Answer: When exotic/non-native plants are introduced to a
new location without the factors like severe seasonal weather,
diseases or insect pests that kept
them under control in their native range, they can just keep
growing and
reproducing, out-competing and displacing the native plants and
disrupting
naturally-balanced native plant communities. This reduction in
biodiversity
can impact wildlife, and alter natural processes such as fire
and water
flow.
Question: Are there highly reputable and science-based
Organization in Florida which identify which trees and plants
that are
invasive exotics?
Answer: Yes, the U.S. Environmental Protection Agency,
the
Florida Department of Environmental Protection, the U.S.
Department of Agriculture, and the Florida Exotic Pest Council
have performed extensive research and have listed hundreds of
invasive and even potentially invasive plant
species. None of these Organizations list the two eucalyptus
species
that we are growing (E. grandis, and E. amplifolia) as invasive
exotics.
Question: I am from California where eucalyptus trees are
common. I know that your statements that eucalyptus trees
are not invasive are false!
Answer: According to the University of Florida, the
Eucalyptus genus has over 500 species. These species vary
greatly and have a huge range of characteristics. Per the
the USDA, two eucalyptus genus found in California,
E. globulus (bluegum eucalyptus) and E. robusta (swampmahogany)
are categoried as invasive. Neither of these genus are being
used at our Energy Crop Tree Farm in central Florida.
Question: Is this the first time eucalyptus trees are
being introduced in Florida? If so, perhaps there is not enough
evidence to determine whether they are invasive.
Answer: According to the University of Florida, E.
grandis has been grown in Florida since the 1800's; E.
amplifolia (a more freeze resistant tree to E. grandis) has been
grown in Florida since at least the 1950's. For ~30 years, Lykes
Corporation has been growing
E. grandis trees to produce landscaping mulch. In fact, if you
go to any garden center in the U.S. (like Home Depot) and buy
eucalyptus mulch, it most probably came from Florida. Today,
Lykes has
~20,000 acres of eucalyptus tree plantations near Lake
Okeechobee (one of the most environmentally sensitive areas in
Florida) -- with no evidence of the trees being invasive.
Question: Are you taking any safeguards against the
possibility that eucalyptus trees will become invasive?
Answer: Yes. For trees to become invasive, they must
flower to produce seed that can be spread by the wind or by
animals. Only mature (~5 years old) trees can flower. By
harvesting eucalyptus trees every 2 to 3 years as a short
rotation crop, the possibility of invasiveness is reduced
significantly -- as the trees will not be allowed to grow to a
flowering
stage.
Question: Prior to your development as a tree farm, what
was the land used for?
Answer:
The ~140 acre site is a un-developed, abandoned phosphate mine (clay settling pond). The
site was last mined over 50 years ago and is severely
environmentally damaged as a prairie of 4' to 8' cogongrass --
an
exotic and highly invasive weed originating from Asia. Also, the
site had an extensive history of wildfires. According to the
Florida Division of Forestry, cogongrass is a leading cause of
wildfires during Florida's dry season in winter and spring
months.
Question: Everytime you cut a tree for harvest, don't you
have to replant?
Answer: No. Both cottonwood and eucalyptus trees re-grow
(called coppice) after each harvest. University of Florida
scientists believe these trees can coppice between 6 and 10
times. For example, if the trees were harvested every two years
and coppiced 10 times -- the productive life of a tree farm
would be 20 years.
Question: I read that eucalyptus trees are highly
flammable, exacerbating the risk of devastating wild-fires in
Florida.
Answer: As a responsible comment, such flammability claims
should be put in some type of context and be science-based. The
pertinent question should be: based on scientific research, are
eucalyptus trees more flammable than say
native pine trees or cogongrass? We have two science based
studies from leading Universities in Australia and
Spain which
found that eucalyptus trees are less
flammable than native species pine trees.
Question: What is the basis of some environmentalists'
claims that eucalyptus trees are highy
flammable?
Answer: We've also asked this question, and have been
provided a link to a Webpage on eucalyptus trees in California. We highly recommend
everyone read these numerous anecdotical newspaper stories
(which are not science-based papers). We believe that
flammability arguments based on these stories are incorrect for
several reasons. The fire problems in northern California are
resulting from (1) frequent freezes causing bark to shed from
the trees; (2) decades of this bark litter accumulating on the
forest
floor. Neither of these conditions would exist at our
plantation in central Florida.
Question: Doesn't the oil contained in eucalyptus trees
make them highly flammable compared to other trees -- exploding
when exposed to fire?
Answer: For this claim to be true, the BTU content (i.e.,
British Thermal Unit, measuring the potential heat content of a
fuel) of eucalyptus trees would have to be significantly greater
than of other trees. In fuel
tests required by the Florida DEP, we have never seen any
material difference in BTU contents of any type of tree fuel
(e.g., eucalyptus, pine trees, yard wastes, etc.) -- they all
contain ~4,500 BTUs per pound.
Question: In light of drought conditions and the numerous
wild-fires in central Florida, are you taking any actions to
reduce the risk of wild-fires?
Answer: Yes, we have taken steps that have reduced
wild-fires in the area by (1) implementing "best
forestry management practices" (e.g., establishing fire lanes on
the entire perimeters of the plantation, weed control, etc.).
(2) Also, because we
are growing and will harvest trees as short rotation crops,
the trees will not be allowed to grow to tall heights (as in
unmanaged forests in California). (3)
Probably most important however, is the fact that we are growing
trees on closed phosphate mining sites, that previous to our
development, was dominated by highly flammable cogongrass
(that was over 8 feet in height!).
Question: What is Genetic Engineering?
Answer:A genetically modified organism (GMO) means a
species that is genetically engineered with techniques that
alter molecular or cell biology of an organism by means that are
not possible under natural conditions or processes. Genetic
engineering includes recombinant DNA and RNA techniques, cell
fusion, micro- and macro-encapsulation, gene deletion and
doubling, introducing a foreign gene, and changing the positions
of genes. Genetic engineering does not include breeding,
conjugation, fermentation, hybridization, in-vitro fertilization
and tissue culture.
Question: Has GMO Engineering been performed on your
energy crop trees?
Answer: No. If you have any questions on GMO
Engineering, please contact
Dr. Don Rockwood of the University
of Florida.
Question: Won't planting mono-culture tree crops hurt
animal bio-diversity?
Answer: We are working with environmental groups
(Audubon
Society, Florida Fish & Wildlife Conservation Commission) to
increase bio-diversity by planting a diverse number of
native species trees, creating "green belts" within the
plantation that will never be cut. You can learn more about our
specific
efforts by going to our webpage
on
this topic.
Question: Why should anyone just take your word that
your
energy crop trees are not harmful?
Answer: You shouldn't. As discussed on one of our
webpages, we are working with numerous environmental groups
in Florida to develop environmental standards that would be
administered by an independent source.
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