Includes index. Book.
0000 - Gale Group | The Making of Modern World
Abstract Transport of seston (suspended sediment) in Pelorus Sound is controlled by tides and freshwater inflow. During high freshwater inflow, a moderately stratified ... tidal circulation, but the latter dominates and transports seston seawards and landwards with the ebb and flood ... inflow, the estuarine circulation gains impetus and most seston is rapidly transported seaward in the low saline ... of circulation there is a persistent trend in seston concentrations. Highest values occur at the sound's ... resuspension of bottom sediment by strong tidal currents. Seston concentrations wane along the sound until near the ...
Tópico(s): Coastal wetland ecosystem dynamics
1976 - Taylor & Francis | New Zealand Journal of Marine and Freshwater Research
... mm x 22.6 mm. Photographer: Various. Lady Seston Mr Crovent W. Crovan Melyeux Sergwambwells.
0000 - Gale Group | NCCO Photography
Theodore J. Georgian, J. Bruce Wallace,
... These caddisflies feed on the suspended organic matter (seston) captured by their nets. We analyzed these species' ... the particle size distributions and monthly abundances of seston, were incorporated into a model of seston capture by these net-spinning caddisflies. The resulting ... reduce competition between them. The model predicted annual seston capture by the six species of 1300 g ... weight), over 1000 times their annual production. The seston captured per longitudinal meter of stream represents 0.005% of the total seston in transport. Resource overlap coefficients indicated that the ...
Tópico(s): Aquatic Invertebrate Ecology and Behavior
1981 - Wiley | Oikos
... C glass-fiber filters for the retention of seston (dry weight) from North Sea water was tested. ... found that GF/C glass-fiber filters retain seston from North Sea samples as efficiently as 0.4 pm Uni-Pore filters at a seston concentration range of about 1.5 to 15 ... fiber filters retained significantly (P < 0.001) more seston than 1 pm Uni-Pore filters and thus ... of 1.2 p would suggest.Comparison of seston retention of GF/C and Uni-Pore filters ... GF/C filters tend to retain relatively more seston as the water becomes clearer and sample volumes ...
Tópico(s): Water Quality Monitoring Technologies
1984 - Inter-Research | Marine Ecology Progress Series
Richard F. Kazmierczak, Jackson R. Webster, E. F. Benfield,
Abstract Six size classes of seston were collected seasonally from the New River, Virginia, U.S.A., during three flow regimes: low flow, discharge changes resulting from ... power generation, and naturally occurring storm discharge cycles. Seston concentration and particle shape, density, and settling velocity ... for all size classes, seasons, and flow regimes. Seston concentration, density, and settling velocity varied significantly with ... mg litre −1 during a winter storm. Mean seston densities ranged between 1.60 and 2.02 ...
Tópico(s): Freshwater macroinvertebrate diversity and ecology
1987 - Wiley | Regulated Rivers Research & Management
Stephen W. Golladay, Jackson R. Webster, E. F. Benfield,
... stream morphology and measurements of particulate organic matter (seston) transport were made in four streams to examine response to forest disturbance. Seston was sampled during baseflows and stormflows in streams ... and organic matter accumulations in disturbed streams. Baseflow seston concentrations varied seasonally, ranging from 0.5 to ... to 7.0 mg/L during summer. Baseflow seston concentrations did not differ consistently between streams. In all streams, seston concentration increased with increasing discharge during storms and ...
Tópico(s): Freshwater macroinvertebrate diversity and ecology
1987 - University of Chicago Press | Journal of the North American Benthological Society
Jackson R. Webster, E. F. Benfield, Stephen W. Golladay, Brian H. Hill, L. E. Hornick, Richard F. Kazmierczak, William Bernard Perry,
... to evaluate effects of various physical factors on seston (particulate organic matter) retention, entrainment, and transport. Results ... important in determining retention of all sizes of seston. Retention increased with roughness and substrate complexity. During simulated storms in laboratory streams, seston concentrations were not generally correlated with discharge. However, we found strong correlation between seston concentration and the rate of increase in discharge during rising hydrographs, and, after peak discharge, seston concentration dropped exponentially independent of discharge. Simulated storms ...
Tópico(s): Freshwater macroinvertebrate diversity and ecology
1987 - Wiley | Limnology and Oceanography
Joseph A. Berg, Roger I. E. Newell,
Seston, the food resource of suspension feeders such as the oyster Crassostrea virginica, was monitored monthly over ... subestuaries of the Choptank River, Maryland. Measurements of seston concentration (mg l−1), as well as estimates of seston food quantity and quality were made at hourly ... 25 cm above the sediment surface. Estimates of seston food ‘quantity’ were based on the amounts of ... and energy content per unit dry weight of seston. Estimates of seston food quality, while variable from month to month, ...
Tópico(s): Wastewater Treatment and Nitrogen Removal
1986 - Elsevier BV | Estuarine Coastal and Shelf Science
Antoine Morin, C. Back, Alain Chalifour, Jacques Boisvert, Robert H. Peters,
... rates of simullid (Diptera) larvae feeding on natural seston were estimated in an artificial stream and used to predict the impact of simuliids on seston transport in a 40-m section of the ... prediction was then compared with changes in the seston flux above and below the population. Finally, we ... Bacillus thuringiensis serovar. israelensis) to observe changes in seston transport after removal of simuliids. The stream population ... larvae ingested between 32 and 55% of the seston flux and assimilated between 17 and 25% of ...
Tópico(s): Hydrology and Sediment Transport Processes
1988 - Canadian Science Publishing | Canadian Journal of Fisheries and Aquatic Sciences
David C. Richardson, Louis A. Kaplan, J. Denis Newbold, A. K. Aufdenkampe,
We measured the baseflow concentration and composition of seston and suspended particulate organic carbon (POC) over a ... southeastern Pennsylvania Piedmont, to assess temporal variability in seston concentration and quality at seasonal and diel timescales. ... h over a 24-h period and measured seston and POC concentrations, carbon composition, pigment content, and 13C isotopic ratios. Seston and POC concentrations exhibited a strong diel pattern; ... diel pattern. We attribute the diel pattern of seston concentration to bioturbation by the nocturnal stream community, ...
Tópico(s): Soil and Water Nutrient Dynamics
2009 - Wiley | Limnology and Oceanography
J. Pommier, J.-J. Frenette, Hélène Glémet,
... Relating RNA:DNA ratio in Eurytemora affinis to seston fatty acids in a highly dynamic environment Julien ... and its relationship to the nutritional quality of seston, expressed in terms of fatty acid (FA) composition. ... Lawrence ETZ translated into the distribution pattern of seston having various FA compositions. Freshwater seston was of better nutritional quality (i.e. richer ... with the relative abundance of 20:5n3-rich seston advected from upstream despite the low contribution of ... total suspended particulate matter. Moreover, a comparison between seston and zooplankton FA composition revealed the potential trophic ...
Tópico(s): Fish Ecology and Management Studies
2009 - Inter-Research | Marine Ecology Progress Series
Stephen R. Fegley, Bruce A. MacDonald, Timothy R. Jacobsen,
... that short-term and small-scale variation in seston availability can have significant effects on individual and ... the substrate surface we measured hourly variation in seston quantity and composition (total C and N, chlorophyll ... particle size spectra) over a tidal cycle. Mean seston concentration was significantly lower in water collected during ... 78·1 mg 1−1). The range of seston concentrations observed in a single tide was almost as great as the range of seston concentrations measured at this site over an entire ...
Tópico(s): Aquatic Ecosystems and Phytoplankton Dynamics
1992 - Elsevier BV | Estuarine Coastal and Shelf Science
Wataru Makino, Jotaro Urabe, James J. Elser, Chikage Yoshimizu,
... in a Canadian Shield lake with generally high seston (suspended food particles mainly composed of algae) carbon ( ... both treatments, increased abundance of D. dentifera reduced seston C concentration and was accompanied by decreases in ... and individual growth rates. However, P‐enrichment increased seston P concentration and then reduced seston C:P ratio from 400–700 to ca ... P treatment at all animal abundances even though seston C concentrations were similar between the treatments. The ... and individual growth rates, respectively, were explained by seston C and P concentrations, and that the contribution ...
Tópico(s): Aquatic Ecosystems and Biodiversity
2002 - Wiley | Oikos
... to determine the effects of variation in ambient seston quantity (total particulate matter, TPM, mg l−1) ... CR responded in a simple linear manner to seston organic content, either in terms of POM (for ... dependent and involved interactions of two or three seston components: TPM, POM and PCOM for A. maoriana; ... PCOM for P. canaliculus. For all three species, seston variation explained 15–20% of the variation in ... that two very different responses to variation in seston quantity and quality exist. First, significant differences in ...
Tópico(s): Environmental Toxicology and Ecotoxicology
2002 - Elsevier BV | Journal of Experimental Marine Biology and Ecology
Frank Sommer, Barbara Santer, Colleen D. Jamieson, Thomas Hansen, Ulrich Sommer,
... L −1 . Zooplankton densities, dissolved inorganic, particulate organic (seston <100 μm), as well as total nutrient concentrations ... bags via a manual pump were determined. 3. Seston carbon (C), seston P and total P were significantly negatively correlated ... 6 μg P L −1 ) sequestered from the seston compartment by Daphnia corresponded roughly to the increase ... particulate matter of the overlying water column. 4. Seston C : P ratios followed a polynomial second‐order ... stronger reduction of P compared with C in seston, and transfer of seston P to zooplankton. Highest ...
Tópico(s): Marine and coastal ecosystems
2002 - Wiley | Freshwater Biology
Sijun Huang, Daniel A. Kreeger, R. I. E. Newell,
We determined the concentration of seston, particulate organic matter, and biological components (chlorophyll a, bacteria, and heterotrophic nanoflagellates) for <25 μm size fraction seston over five seasons in Canary Creek saltmarsh, Delaware ... to mid-ebb tide. Although the concentration of seston did not vary seasonally, there were significant seasonal variations (analysis of variance, P<0.05) in seston components, with chlorophyll a concentration being highest in ... bacteria and heterotrophic nanoflagellates most abundant in August. Seston composition also varied within each tidal cycle with ...
Tópico(s): Marine and coastal plant biology
2003 - Elsevier BV | Estuarine Coastal and Shelf Science
... of the distribution of particulate organic matter, or seston, in a tidal embayment with shellfish aquaculture. The focus is on the spatio-temporal dynamics of seston as influenced by the processes of water motion and mixing, internal primary production of seston, and the clearance of the water volume by ... population. A fluid dynamical framework is used wherein seston is treated as a non-conservative tracer in ... used to examine the sensitivity of tidally averaged seston concentration and flux to variations in tidal transport, ...
Tópico(s): Marine and fisheries research
2003 - Elsevier BV | Estuarine Coastal and Shelf Science
Ellen van Donk, Dag O. Hessen, Antonie M. Verschoor, R. D. Gulati,
... re-oligotrophication by phosphorus reduction measures can affect seston quality in lakes due to an increase in ... cause a decrease in trophic transfer efficiency. Because seston C:P ratios of seston tend to decrease with increasing P concentration in ... i.e. the C:P ratio of the seston will increase when lakes become re-oligotrophicated by ... may imply lower food quality for P-demanding seston grazers, like Daphnia, which have both relatively low ... share of cyanobacteria. These two qualitative traits of seston (higher C:P ratios and change in phytoplankton ...
Tópico(s): Soil and Water Nutrient Dynamics
2008 - Elsevier BV | Limnologica
Robert W. Sterner, Tom Andersen, James J. Elser, Dag O. Hessen, James M. Hood, Edward McCauley, Jotaro Urabe,
... we found that the best model to describe seston stoichiometry depended on the scale of analysis. We also found that there were better estimates for seston chemistry than the classical ratio for all habitats, ... P and C:N often declined with increasing seston abundance, rejecting a constant ratio model. Within both freshwater and marine habitats, higher seston abundance is often associated with lower C: P ... indicates a scale dependence in stoichiometric relationships in seston C:N: P ratios. Given these consistent shifts ...
Tópico(s): Aquatic Ecosystems and Phytoplankton Dynamics
2008 - Wiley | Limnology and Oceanography
Alexandre Bec, Marie‐Elodie Perga, Christian Desvilettes, Gilles Bourdier,
... few field studies that have tried to relate seston taxonomic and fatty acid (FA) composition suggest that phytoplankton composition only partially explains seston FA composition. However, in these studies, the heterotrophic components of seston (i.e. bacteria and heterotrophic protists) have not ... was that including the contribution of heterotrophs to seston biomass can improve understanding of the variability in seston FA composition. This was tested for an oligotrophic ... in which the taxonomic and FA compositions of seston, fractionated into three size classes, were monitored every ...
Tópico(s): Isotope Analysis in Ecology
2010 - Wiley | Freshwater Biology
Joseph L. Ravet, Michael T. Brett, George B. Arhonditsis,
We collected suspended particulate matter (seston) and zooplankton samples from Lake Washington in Seattle, Washington, USA, over a 10‐month period to investigate the effects of food ... critical ω3 polyunsaturated fatty acids (PUFA) in the seston varied from 8% of the FA pool in ... percentages ω3 PUFA than was available in the seston. In particular, cladocerans preferentially accumulated eicosapentaenoic acid (EPA, ... with the prevalence of these FAs in the seston. Furthermore, the DHA content of Diaptomus was moderately ...
Tópico(s): Marine and fisheries research
2010 - Wiley | Ecology
... 10.3354/meps08551 Seasonal changes in Baltic Sea seston stoichiometry: the influence of diazotrophic cyanobacteria Jakob Walve*, ... N2-fixing (diazotrophic) cyanobacteria and size-fractions of seston. Samples were collected during an annual cycle in ... Baltic proper (1997 and 1998, Gotland Basin). Generally, seston C:N:P ratios in the top 20 ... the spring bloom. In early summer (May–June), seston C:N:P ratios indicated weak N limitation ... community of small phytoplankton. From June through summer, seston size-fractions <10 µm accumulated mainly C and ...
Tópico(s): Marine Biology and Ecology Research
2010 - Inter-Research | Marine Ecology Progress Series
Michail I. Gladyshev, Nadezhda N. Sushchik, Olesia N. Makhutova, О. P. Dubovskaya, E. S. Kravchuk, Galina S. Kalachova, Elena B. Khromechek,
... on weekly basis fatty acid (FA) composition of seston fraction 130 μm, and compared them using a ... and inorganic nutrients on FA composition of the seston and the zooplankton. In spite of significant differences ... 1-week lag) between FA composition of the seston and the zooplankton. The most important factor, providing ... canonical cross-correlation between FA profiles of the seston and the zooplankton fractions was eicosapentaenoic acid (20: ... by seasonal changes in FA composition of the seston, rather than by taxonomic differences of FA profiles ...
Tópico(s): Environmental Toxicology and Ecotoxicology
2010 - Elsevier BV | Limnologica
Allison L. Babler, Alberto Pilati, Michael J. Vanni,
... each lake to characterize δD of water and seston (phytoplankton and similarly-sized particles that cannot be ... reservoirs except Deer Creek, Pleasant Hill, and Tappan, seston and water were sampled on the same day as fish; for these 3 lakes water and seston were sampled within 2 weeks of fish sampling. ... mean water δD value of nearby Pleasant Hill. Seston was collected to estimate the isotopic composition of ... organic matter derived from phytoplankton photosynthesis. To obtain seston samples, we filtered water (≤10 L) through a ...
Tópico(s): Mercury impact and mitigation studies
2011 - Wiley | Ecosphere
Laurent Barillé, Bruno Cognie, Peter G. Beninger, Priscilla Decottignies, Yves Rincé,
... of the gastropod Crepidula fornicata to changes in seston concentration Laurent Barillé*, Bruno Cognie, Peter Beninger, Priscilla ... prosobranch gastropod Crepidula fornicata (L.) to changes in seston abundance and composition, characteristic of the natural particle ... tidal resuspension. The experimental conditions were characterized by seston concentrations (12.2 to 196.0 mg l ... efficiencies of smaller particles significantly declined with increasing seston loads. A constant clearance rate (CR) was found ...
Tópico(s): Environmental Toxicology and Ecotoxicology
2006 - Inter-Research | Marine Ecology Progress Series
... δ 13 C and δ 15 N of seston, organic matter sources (riparian vegetation, algae, macrophytes, plankton) ... Mountain river (fourth order). The isotopic composition of seston varied among sites and seasons for all size ... fine particulate organic matter (< 53 μm). Comminution of seston to ultra‐fine size partially obscured isotopic differences among sites. Multiple isotope signatures of seston were distinct among sites at different distances from ... between the river and a third order tributary. Seston (> 53 μm) from 0.5 km below the ...
Tópico(s): Aquatic Invertebrate Ecology and Behavior
1993 - Wiley | Regulated Rivers Research & Management
Amber J. Ulseth, Anne E. Hershey,
... to determine the influence of anthropogenic nutrients on seston δ15N, nutrient concentrations, C/N ratios, and patterns ... North Buffalo Creek during different hydrological conditions. Baseflow seston δ15N varied significantly among sampling sites. Baseflow seston δ15N ranged from 3.7‰ to 4.6‰ ... nonpoint sources of N in North Buffalo Creek. Seston δ15N also reflected point sources of N in North Buffalo Creek. The most enriched seston δ15N values (8.4‰) were found directly downstream of the Waste Water Treatment Plant (WWTP). Seston δ15N values at the Rankin Mill Road (Rankin) ...
Tópico(s): Soil and Water Nutrient Dynamics
2005 - University of Chicago Press | Journal of the North American Benthological Society
Ruth H. Carmichael, Iván Valiela,
We compared near-bottom seston and surface sediment composition in Cape Cod estuaries receiving different N loads to determine whether eutrophic-driven changes in seston and sediment composition occur in tandem and what ... as food for benthic consumers. Δ15N signatures in seston and sediment increased with increasing N loads to estuaries and linked particles in nearshore seston and sediment to land-derived wastewater sources. Δ13C signatures in seston and sediment reflected C inputs primarily from microalgae. ...
Tópico(s): Marine Bivalve and Aquaculture Studies
2005 - Wiley | Limnology and Oceanography
Zainal Arifin, LI Bendell-Young,
... on the assimilation of 109Cd from environmentally relevant seston matrices Zainal Arifin1,2, Leah I. Bendell-Young1,* ... Mytilus trossulus. Two complementary experiments which used 5 seston matrices of different seston quality (SQ) were implemented: (1) algae labeled with ... 109Cd from the algae and silt components of seston respectively. Active 109Cd-AE will be proportional to ... of metal associated with the inorganic component of seston, with digestive processes that are activated in the ... of Cd that can be potentially assimilated from seston by filter-feeding organisms, the contribution from the ...
Tópico(s): Aquatic Invertebrate Ecology and Behavior
2000 - Inter-Research | Marine Ecology Progress Series