Environmental Monitoring and Assessment
1573-2959
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Monitoring the results of Canada/U.S.A acid rain control programs: some lake responses
Tập 88 Số 1 - Trang 3-19 - 2003
Aquatic acidification by deposition of airborne pollutants emerged as an
environmental issue in southeastern Canada during the 1970s. Drawing information
from the extensive research and monitoring programs, a sequence of issue
assessments demonstrated the necessity of reducing the anthropogenic emissions
of acidifying pollutants, particularly sulphur dioxide (SO2). The 1991
Canada-U.S. Air Quality...
Methane Emissions of Differently Fed Dairy Cows and Corresponding Methane and Nitrogen Emissions from their Manure during Storage
Tập 79 Số 2 - Trang 129-150 - 2002
This study investigated the effects of supplementing 40 g lauric acid (C12) kg-1
dry matter (DM) in feed on methane emissions from early-lactating dairy cows and
the associated effects on methane, nitrous oxide and ammonia release from the
manure during storage. Stearic acid (C18), a fatty acid without assumed
methane-suppressing potential in the digestive tract of ruminants, was added at
40 g kg-...
Spatial Patterns of Nitrate, Chloride, Sulfate, and Fluoride Concentrations in the Woodbine Aquifer of North-Central Texas
Tập 82 Số 3 - Trang 311-320 - 2003
A geographic information system was used to map and analyze nitrate, chloride,
sulfate, and fluoride concentrations in 110 wells tapping the Woodbine Aquifer.
The study area, covering ninecounties in north-central Texas, includes large
percentages of both urban and agricultural land uses. Land use maps were
compared with solute concentration data, and statistics were applied to detect
associations...
Incidence of Stress in Benthic Communities along the U.S. Atlantic and Gulf of Mexico Coasts within Different Ranges of Sediment Contamination from Chemical Mixtures
Tập 81 Số 1 - Trang 149-161 - 2003
Synoptic data on concentrations of sediment-associated chemical contaminants and
benthic macroinfaunal community structure were collected from 1,389 stations in
estuaries along the U.S. Atlantic and Gulf of Mexico coasts as part of the
nationwide Environmental Monitoring and Assessment Program (EMAP). These data
were used to develop an empirical framework for evaluating risks of benthic
community-...
Influence of Aluminium on the Restoration Potential of a Terrestrial Vascular Plant, Portulaca Oleracea L. as a Biomonitoring Tool of Fresh Water Aquatic Environments
Tập 78 Số 1 - Trang 19-29 - 2002
In the present study, the influence of aluminium on the regeneration potential
of leaf and stem-cuttings of Portulaca oleracea was studied in order to identify
a terrestrial plant species as an alternate biomonitoring toolof fresh water
environment. The leaves and stem cuttings of theterrestrial plant, P. oleracea
grew well in the distilled water producing adventitious and lateral roots. The
alumi...
Assessment of species and antimicrobial resistance among Enterobacteriaceae isolated from mallard duck faeces
- 2015
Mallard ducks have demonstrated to be a likely reservoir for zoonotic E. coli
strains; thus, it is possible that these ducks could also act as a reservoir for
other Enterobacteriaceae members. The present study was initiated to evaluate
the species distribution of Enterobacteriaceae other than E. coli in 175 fresh
faecal samples collected from a population of mallard ducks. Sixty-four samples
disp...
Bioassessment of Streams using Macroinvertebrates: Are the Chironomidae Necessary?
Tập 71 Số 2 - Trang 177-185 - 2001
We compared the sensitivity of commonly usedbioassessment metrics to detect
organic impairment ofstreams using data sets that varied only in the inclusion
orexclusion of Chironomidae identified to genus. We evaluatedsituations in two
contrasting ecoregions of Missouri, U.S.A.,the Ozark ecoregion and the Prairie
ecoregion whereChironomidae comprise an average of 32 and 42%,respectively, of
the tota...
Monitoring early-season agricultural drought using temporal Sentinel-1 SAR-based combined drought index
- 2023
Early-season agricultural drought is frequent over South Asian region due to
delayed or deficient monsoon rainfall. These drought events often cause delay in
sowing and can even result in crop failure. The present study focuses on
monitoring early-season agricultural drought in a semi-arid region of India over
5-year period (2016–2020). It utilizes hydro-climatic and biophysical variables
to devel...
Influence of coal-based thermal power plants on the spatial–temporal variability of tropospheric NO 2 column over India
- 2012
The oxides of nitrogen—NO x (NO and NO2)—are an important constituent of the
troposphere. The availability of relatively higher spatial (0.25° grid) and
temporal (daily) resolution data from ozone monitoring instrument (OMI) onboard
Aura helps us to better differentiate between the point sources such as thermal
power plants from large cities and rural areas compared to previous sensors. The
annual...