Time and density-dependent properties of fluid mud suspensions, NE brazilian continental shelf

1984 ◽  
Vol 4 (3-4) ◽  
pp. 147-152 ◽  
Author(s):  
Richard W. Faas
Keyword(s):  
Continental Shelf ◽  
Fluid Mud ◽  
Density Dependent

Fluid-mud processes on the Amazon continental shelf

1996 ◽  
Vol 16 (5-6) ◽  
pp. 667-696 ◽  
Author(s):  
G.C. Kineke ◽  
R.W. Sternberg ◽  
J.H. Trowbridge ◽  
W.R. Geyer
Keyword(s):  
Continental Shelf ◽  
Fluid Mud

The role of wave-induced density-driven fluid mud flows for cross-shelf transport on the Eel River continental shelf

2000 ◽  
Vol 20 (16) ◽  
pp. 2113-2140 ◽  
Author(s):  
P Traykovski ◽  
W.R Geyer ◽  
J.D Irish ◽  
J.F Lynch
Keyword(s):  
Continental Shelf ◽  
Fluid Mud ◽  
Eel River ◽  
Wave Induced

Biology of an active methane seep on the Oregon continental shelf

1993 ◽  
Vol 95 ◽  
pp. 287-294
Author(s):  
AR Juhl ◽  
GL Taghon
Keyword(s):  
Continental Shelf ◽  
Methane Seep

Isotopic characterization of lifetime movement by two demersal fishes from the northeastern Gulf of Mexico

2021 ◽  
Vol 657 ◽  
pp. 161-172
Author(s):  
JL Vecchio ◽  
JL Ostroff ◽  
EB Peebles
Keyword(s):  
Gulf Of Mexico ◽  
Continental Shelf ◽  
Life Histories ◽  
Linear Mixed Model ◽  
Trophic Position ◽  
Eye Lens ◽  
Outer Continental Shelf ◽  
Red Grouper ◽  
Lens Diameter ◽  
Isotopic Characterization

An understanding of lifetime trophic changes and ontogenetic habitat shifts is essential to the preservation of marine fish species. We used carbon and nitrogen stable isotope values (δ13C and δ15N) recorded within the laminar structure of fish eye lenses, reflecting both diet and location over time, to compare the lifetime trends of 2 demersal mesopredators. Tilefish Lopholatilus chamaeleonticeps inhabit burrows on the outer continental shelf, which results in exceptional site fidelity. Red grouper Epinephelus morio are spawned on the middle to outer continental shelf, move to the inner shelf for the juvenile period, and return offshore upon sexual maturity. Both species inhabit the eastern Gulf of Mexico, a region with a distinctive offshore-inshore gradient in background δ13C values. Within individual tilefish (n = 36), sequences of δ13C values and δ15N values had strong, positive correlations with eye-lens diameter, and strong correlations between the 2 isotopes (mean Spearman r = 0.86), reflecting an increase in trophic position with growth and little lifetime movement. In red grouper (n = 30), δ15N values positively correlated with eye-lens diameter, but correlations between δ15N and δ13C were weak (mean Spearman r = 0.29), suggesting cross-shelf ontogenetic movements. Linear mixed model results indicated strong relationships between δ15N and δ13C values in tilefish eye lenses but no convergence in the red grouper model. Collectively, these results are consistent with previously established differences in the life histories of the 2 species, demonstrating the potential utility of eye-lens isotope records, particularly for investigating the life histories of lesser-known species.

Urbanization impacts on production and recruitment of Fundulus heteroclitus in salt marsh creeks

2020 ◽  
Vol 645 ◽  
pp. 187-204
Author(s):  
PJ Rudershausen ◽  
JA Buckel
Keyword(s):  
Salt Marsh ◽  
Salt Marshes ◽  
Fundulus Heteroclitus ◽  
Multiple Factor Analysis ◽  
Southeastern Usa ◽  
Density Dependent ◽  
Dependent Relationship ◽  
Juvenile Abundance ◽  
The Relationship ◽  
Throw Trap

It is unclear how urbanization affects secondary biological production in estuaries in the southeastern USA. We estimated production of larval/juvenile Fundulus heteroclitus in salt marsh areas of North Carolina tidal creeks and tested for factors influencing production. F. heteroclitus were collected with a throw trap in salt marshes of 5 creeks subjected to a range of urbanization intensities. Multiple factor analysis (MFA) was used to reduce dimensionality of habitat and urbanization effects in the creeks and their watersheds. Production was then related to the first 2 dimensions of the MFA, month, and year. Lastly, we determined the relationship between creek-wide larval/juvenile production and abundance from spring and abundance of adults from autumn of the same year. Production in marsh (g m-2 d-1) varied between years and was negatively related to the MFA dimension that indexed salt marsh; higher rates of production were related to creeks with higher percentages of marsh. An asymptotic relationship was found between abundance of adults and creek-wide production of larvae/juveniles and an even stronger density-dependent relationship was found between abundance of adults and creek-wide larval/juvenile abundance. Results demonstrate (1) the ability of F. heteroclitus to maintain production within salt marsh in creeks with a lesser percentage of marsh as long as this habitat is not removed altogether and (2) a density-dependent link between age-0 production/abundance and subsequent adult recruitment. Given the relationship between production and marsh area, natural resource agencies should consider impacts of development on production when permitting construction in the southeastern USA.

Neurophysiological studies of flight-related density-dependent phase characteristics in locusts

2004 ◽  
Vol 55 (1-4) ◽  
pp. 137-141 ◽  
Author(s):  
A. Ayali ◽  
Einat Fuchs ◽  
W. Kutsch
Keyword(s):  
Density Dependent ◽  
Neurophysiological Studies

Hoạt động kiến tạo vỡ núi lửa trẻ (Pliocen - Đệ tứ) thềm lục địa nam Việt Nam (Theo số liệu địa vật lý)

2008 ◽  
Vol 30 (4) ◽  
pp. 289-301
Author(s):  
Phạm Năng Vũ ◽  
Phạm Nguyễn Hà Vũ ◽  
Nguyễn Xuân Bình
Keyword(s):  
Continental Shelf ◽  
Viet Nam ◽  
Volcanic Activities

Young and recent tectonic and volcanic activities in the Southern continental shelf of Vietnam

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