Estuaries
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Seasonal control of the Saint-Lawrence maximum turbidity zone by tidal-flat sedimentation
Tập 9 Số 2 - Trang 84-94 - 1986
The core of the turbidity maximum zone in the Saint-Lawrence Estuary is located
in the North Channel and oscillates in front of the large (3×106 m2) intertidal
flats and marshes of Cap Tourmente. It is shown that seasonal fluctuations in
the intensity and the position of this core are mainly determined by suspended
sediment exchanges between the channel and the marshes. Fine sediments, most of
the...
Gas exchange in rivers and estuaries: Choosing a gas transfer velocity
Tập 24 Số 2 - Trang 312-317 - 2001
Capybara (Hydrochaeris hydrochaeris rodentia: Hydrochaeridae): A mammalian seagrass herbivore
Tập 27 Số 2 - Trang 197-200 - 2004
This note reports an unknown trophic interaction between a mammalian herbivore,
the capybara (Hydrochaeris hydrochaeris), and the seagrassRuppia maritima
(wigeongrass) and compares the feeding behavior of capybaras to other seagrass
grazers. Observations were made in Spring 2002 in the Barra Grande, a small,
shallow, moderately stratified, bar-built estuary at Ilha Grande, Rio de Janeiro
State, so...
Infaunal community development of artificially established salt marshes in North Carolina
Tập 17 Số 2 - Trang 489-500 - 1994
In recent years, artificial establishment of Spartina alterniflora marshes has
become a common method for mitigating impacts to salt marsh systems. The
vegetative component of artificially established salt marshes has been examined
in several studies, but relatively little is known about the other aspects of
these systems. This study was undertaken to investigate the infaunal community
of artifici...
Accretion and canal impacts in a rapidly subsiding wetland. III. A new soil horizon marker method for measuring recent accretion
Tập 12 Số 4 - Trang 269-283 - 1989
A new methodology used on a large scale is reported by which short-term (≤1 yr)
marsh accretion rates were measured in saltwater and brackish marshes and
compared to first-time measurements made in freshwater marshes. The stable
rare-earth elements (REE) dysprosium and samarium were used for soil horizon
markers that were collected by a cryogenic field coring method and detected by
instrumental ne...
Temporal variability of remotely sensed suspended sediment and sea surface temperature patterns in Mobile Bay, Alabama
Tập 13 Số 2 - Trang 155-160 - 1990
Distribution patterns of suspended sediments and sea surface temperatures in,
Mobile Bay were derived from algorithms using digital data from the visible,
near infrared, and infrared channels of the Advanced Very High Resolution
Radiometer (AVHRR) on the NOAA-TIROS-N satellite. Closely spaced AVHRR scenes
for January 20, 24, and 29, 1982, were compared with available environmental
information take...
The influence of nitrogen level, form, and application method on the growth response ofSpartina alterniflora in North Carolina
Tập 2 Số 2 - Trang 106-112 - 1979
The influence of nitrogen level, form, and application method on the growth
response of short and tallSpartina alterniflora was determined in a North
Carolina salt marsh. The application of various nitrogen levels increased the
aerial standing crop of shortSpartina as much as 172%, but had no significant
effect on that of the tall form. Band application produced a significantly
greater yield respo...
Seasonality of materials transport through a coastal freshwater marsh: Riverine versus tidal forcing
Tập 9 Số 4 - Trang 301-308 - 1986
Transports of nitrate and suspended solids were measured six times from January
1984 until January 1985 in a small freshwater tidal bayou in south-central
Louisiana. The bayou and adjacent marshes are influenced by Atchafalaya River
discharges, tides, and coastal weather patterns. Large net ebb-directed water
transports occurred in winter, spring, and summer, coincident with high river
discharges,...
Transient hydrodynamic and salinity simulations in the Chesapeake Bay network
Tập 6 Số 4 - Trang 356-363 - 1983
A transient network model is applied to the Chesapeake Bay and its tributary
estuaries. Calibration of the model is based on only three external parameters:
a friction factor that is spatially described, and two global constants required
to calibrate a dynamic dispersion relationship that depends on both the local
salinity gradient and hydraulic conditions. The transient hydrodynamics and the
tran...
A comparison of residence time calculations using simple compartment models of the Altamaha River estuary, Georgia
Tập 25 Số 6 - Trang 1304-1317 - 2002
The residence and flushing times of an estuary are two different concepts that
are often confused. Flushing time is the time required for the freshwater inflow
to equal the amount of freshwater originally present in the estuary. It is
specific to freshwater (or materials dissolved in it) and represents the transit
time through the entire system (e.g., from head of tide to the mouth). Residence
tim...