position as a habitat indicator for estuarine populations.
and abundance levels of all moronid larval stages declined to near-zero levels down-estuary of the 2.
In the lower inlet, isohaline
contours vary with tidal currents, with local areas of depressed salinity near the mouths of large rivers and from glacially fed streams.
The structures are operated to maintain salinities within the project along two isohaline
lines (5ppt and 12ppt), while allowing as much ingress and egress of marine organisms as possible.
of 30, considered the boundary of estuarine waters (Guerrero, 1998), showed a south-eastward extension indicating a river discharge in this direction whose influence reaches 37[degrees]50'S.
1996) yields the following empirical relationship for the area A (in km2) encompassed by the isohaline
of salinity S of a plume arising from a volume discharge rate Q0 (m3/s) spreading over water of salinity Sb (measured at a depth of 3 m below the pycnocline; Sb ranges from 22 to 27 over the eight rivers examined):
7i,j, in which both isotherm and isohaline
spacing represent equal contributions to density.
Similar results were observed for Chesapeake and Delaware bays (Bulger et al, 1993; Able et al, 1997), who identified the 25-27 isohaline
as the edge of the brackish water for strictly marine species.
Due to difficulties in creating continuous salinity and temperature contour maps in GIS, these variables were classified as follows: salinity was classified by one of the five isohaline
zones described previously and analyzed as such to determine its influence on brown shrimp distribution; and water temperature was classified by season determined by cluster analysis and analyzed to examine possible temporal effects of brown shrimp distribution.
Seaglider hydrographic sections along 8[degrees]N indicate rising isohalines
near the Sri Lankan coast in February 2014 and a more patchy salinity field in April 2014.
Note that R1 has a higher surface salinity than that presented by R2, a difference associated with the vertical elevation of the isohalines
produced by the interaction of R1 with the dorsal's topography (Figs.
Agulhas Return Front (ARF), Southern Subtropical Front (SSTF), and Northern Subantarctic Front (NSAF) were designated as the combined front between 40[degrees]157S and 43[degrees]S suggesting that the combined isotherms exhibit temperature variation from 19[degrees]C to 10[degrees]C and the combined isohalines
exhibit a drop in salinity from 35.