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This book is the final installation in a three-volume series
synthesizing 30 years of mercury research in the Florida
Everglades. The first part of this book evaluates the occurrence of
trends in both biota mercury concentrations and atmospheric mercury
deposition. Through both empirical and deterministic analyses, the
likely drivers of biota trends are identified. These analyses help
lay the predicate for devising an overall strategy to mitigate and
manage the Everglades mercury problem. The book concludes with a
model analysis of the likely benefits and uncertainty attendant
with implementing the leading candidate strategy for best reducing
the Everglades mercury problem.
This book integrates 30 years of mercury research in the Florida
Everglades to inform scientists and policy makers. The Everglades
is an iconic ecosystem by virtue of its expanse; diversity of
biota; and multiple international designations. Despite this, the
Everglades has been subjected to multiple threats including:
habitat loss, hydrologic alterations, invasive species and altered
water quality. Less well recognized as a threat to Everglades human
use and wildlife populations is the toxic metal, mercury. The first
half of Volume II focuses on biogeochemistry and factors unique to
the Everglades that make it extraordinarily susceptible to mercury
methylation following its deposition: warm subtropical climate,
shallow depth, high levels of dissolved organic matter, sulfate
contamination, nutrient enrichment and sediment redox conditions
(for review of atmospheric mercury deposition significance, see
Vol. I). The second half of Volume II answers the "so what"
question - why biomagnification of the methylmercury produced in
the Everglades is a threat to the health of top predators including
humans. The results of the synthesis presented in Volume II suggest
that the mercury problem in the Florida Everglades is one of the
worst in the world due to its areal extent and the degree of risk
to ecological receptors and humans.
This book integrates 30 years of mercury research in the Florida
Everglades to inform scientists and policy makers. The Everglades
is an iconic ecosystem by virtue of its expanse; diversity of
biota; and multiple international designations. Despite this, the
Everglades has been subjected to multiple threats including:
habitat loss, hydrologic alterations, invasive species and altered
water quality. Less well recognized as a threat to Everglades human
use and wildlife populations is the toxic metal, mercury. The first
half of Volume II focuses on biogeochemistry and factors unique to
the Everglades that make it extraordinarily susceptible to mercury
methylation following its deposition: warm subtropical climate,
shallow depth, high levels of dissolved organic matter, sulfate
contamination, nutrient enrichment and sediment redox conditions
(for review of atmospheric mercury deposition significance, see
Vol. I). The second half of Volume II answers the "so what"
question - why biomagnification of the methylmercury produced in
the Everglades is a threat to the health of top predators including
humans. The results of the synthesis presented in Volume II suggest
that the mercury problem in the Florida Everglades is one of the
worst in the world due to its areal extent and the degree of risk
to ecological receptors and humans.
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