A passive integrative mercury sampler (PIMS) based on a sealed polymeric
membrane was effective for the collection and preconcentration of Hg0. Because
the Hg is both oxidized and stabilized in the ...
The U.S. Geological Survey has been monitoring the Upper Mississippi River
(UMR) since 1987 to document the fate and transport of contaminants associated
with sediments. The UMR is that part of the ...
The objectives of this work were 1) to study the recovery and homogenity of
polychlorinated biphenyls (PCBs) in solution prepared for ELISA by direct
dilution of isooctane solutions; 2) to evaluate ...
Aquatic plant toxicity tests are frequently conducted in environmental risk
assessments to determine the potential impacts of contaminants on primary
producers. An examination of published plant toxicity ...
This data relates to the relative sensitivity of five species of aquatic
macrophytes and six species of algae to four commonly used herbicides
(atrazine, metribuzin, alachlor, and metoachlor). Toxicity ...
Elevated concentrations of planar, halogenated hydrocarbons have been linked
to reproductive problems in a variety of fish-eating birds and mammals in the
Great Lakes and in particular Saginaw Bay. ...
The semipermeable membrane device (SPMD) technology was employed to determine
the presence of bioavailable organochlorine pesticides (OCs), polychlorinated
biphenyls (PCBs), and polyaromatic hydrocarbons ...
In this study, mink (Mustela vison) were exposed to various amounts of carp
(Cyprinus carpio) collected from Saginaw Bay, Lake Huron, MI, and the
reproductive effects were observed. In this portion ...
This long-term data set is focused on sampling
vegetation in national park units and analyzing
them for elemental and compound contents to
determine health and pollution status of plants in
the national ...
Variation in concentrations of acid-volatile sulfide (AVS) in sediments from
the upper Clark Fork River of Montana was associated with differences in
bioaccumulation of Cu and Zn and growth of larvae ...
Planar halogenated hydrocarbons (PHHs), such as polychlorinated
dibenzo-p-dioxins, dibenzofurans, and biphenyls are present in aquatic systems,
and are known to produce adverse effects in fish. This ...
Contaminant concentrations in freshwater fish and birds were periodically
measured. Fish were selected for monitoring aquatic ecosystems because of
their tendency to accumulate pesticides and other ...
Previous research on the distribution of Neosho madtoms, which are
Federally-listed as threatened, indicated a positive relationship between
density of Neosho madtoms and cumulative density of other ...
Lead poisoning of birds, particularly common loons
(Gavia immer) and trumpeter swans (Cygnus
buccinator), in the United States due to the
ingestion of lead fishing sinkers has been
documented in several ...
This data documents the distribution of known and
potential microbial pathogens in the Salton Sea
ecosystem to provide baseline information for
those tasked to evaluate proposed engineering
Albino and pigmented medaka Oryzias latipes was exposed to simulated solar
ultraviolet-B (UVB) radiation to determine if albino medaka were less tolerant
of UVB radiation than medaka pigmented with ...
Semipermeable membrane devices (SPMDs) were used to passively sample aqueous
polychlorinated dibenzo-p-dioxins (PCDDs) and polychlorinated dibenzofurans
(PCDFs) in Bayou Meto, Arkansas. The two sites ...
The biological oceanography data set is part of the overarching
GulfCet II study, Cetaceans, Sea Turtles and Seabirds in the Northern Gulf of
Mexico: Distribution, Abundance and Habitat Associations, ...
The hydrography data set is part of the overarching GulfCet II
study, Cetaceans, Sea Turtles and Seabirds in the Northern Gulf of Mexico:
Distribution, Abundance and Habitat Associations, which provides ...
The study area is the watershed for the Chattahoochee River from Buford Dam to
just downstream of the mouth of Peachtree Creek. This study area includes the
entire Chattahoochee River National Recreation ...
The Army Enviromental Center (AEC) gave the Waterways Experiment
Station (WES) the task of developing a database covering noxious and nuisance
plants because there is no central database on nonindigenous ...
Acid-dependent leaching potential (pH 2.5,3,3.5,4,4.5,5,&5.5) of major
solutes from leaves of 7 major canopy species measured in the
laboratory using a rainwater simulation procedure ("leaching
Populations of infaunal macroinvertebrates in the Rhode River
subestuary of the Chesapeake Bay were monitored starting in October
1979. Samples were collected bimonthly from late March to early
Tethering techniques are used to assess sources of and temporal
variation in juvenile blue crab mortality as a function of water depth
in the nearshore shallows of the Rhode River subestuary. Twenty-five ...
Leaf area by species and height interval for all species in the SERC
Tower stand for the entire growing season of 1994: the details of
canopy structural phenology. Measurements taken about 20 times ...
Aboveground biomass data and graphs by community, CO2 treatment and
year. Data are in summary form rather than by plot. Measurements
taken annually (end of Jyly-beginning of August). 0.8 m diameter ...
Ambient atmospheric CO2 concentration and CO2 concentration in the 15
elevated CO2 open top chambers in C3, C4 and mixed C3&C4 communities
(5 per community).
Data were averaged over 15 minute periods; ...
Leaf area of Scirpus olneyi determined by measuring the green length
(height) and the diameter at the midpoint of the shoot. Length,
diameter, and dry mass of these subsample shoots are used in