1-20 of 222 Search Results for

enrichment factor

Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
Close Modal
Sort by
Image
Published: 01 September 2006
Figure 5. Phosphorus Enrichment Factor in NAM-7. More
Journal Article
Aquatic Ecosystem Health & Management (2016) 19 (4): 345–354.
Published: 01 October 2016
... size, and organic matter. The mean concentrations of all the elements in both seasons (dry and wet) at Pattani Bay were higher than those in the Seitu Wetlands. High levels of As were detected in both seasons, but they were classified as moderately polluted in the dry season. The Enrichment Factor...
FIGURES
Journal Article
Aquatic Ecosystem Health & Management (2002) 5 (4): 473–483.
Published: 01 December 2002
... an enrichment factor, cadmium presented elevated results, mainly in the harbor, probably due to 25 years of activity of a fertilizer complex, which uses raw material enriched with Cd up to 100 times the region's natural background. Brazil cadmium natural background References Baisch , P...
Journal Article
Aquatic Ecosystem Health & Management (2001) 4 (2): 151–163.
Published: 01 June 2001
... spectroscopy. This group of pollutants was significantly enriched in particulate matter, sediments and biota material at all sites relative to water concentrations. On the basis of data obtained, the enrichment factors of 10 to 10 5 for different carcinogenic and noncarcinogenic compounds in the particulate...
Journal Article
Aquatic Ecosystem Health & Management (2018) 21 (1): 1–9.
Published: 02 January 2018
... bacterioneuston and bacterioplankton. The colony-forming units in the surface microlayer were significantly enriched compared with that in the subsurface layer. Enrichment factors (the ratio of abundance in the surface layer to that in the subsurface layer) led to high total cell counts in the surface microlayer...
FIGURES | View All (6)
Journal Article
Aquatic Ecosystem Health & Management (2005) 8 (3): 313–322.
Published: 01 July 2005
... samples taken from a highly-polluted reservoir, Billings, São Paulo, exhibited enrichment factors from 2.4 to 30 fold, compared to two other water bodies in the study, Barra Bonita Reservoir and Diogo Lake. High mortality rates occurred when Hyalella azteca and Ceriodaphnia dubia were exposed to Billings...
FIGURES
Journal Article
Aquatic Ecosystem Health & Management (2007) 10 (1): 47–56.
Published: 01 March 2007
... of quartz and carbonate, from shells and coral, direct ratioing to Al would result in anomalous values. Thus enrichment factor (EF) values using Al as a reference element were determined and showed that sampling sites off the major rivers of Terengganu were anthropogenically influenced by Pb and Cd. Sources...
FIGURES | View All (5)
Journal Article
Aquatic Ecosystem Health & Management (2006) 9 (3): 307–318.
Published: 01 September 2006
...Figure 5. Phosphorus Enrichment Factor in NAM-7. ...
FIGURES | View All (8)
Journal Article
Aquatic Ecosystem Health & Management (2000) 3 (4): 515–520.
Published: 01 January 2000
...; Contamination; Enrichment factor; Estuary 1. Introduction Most heavy metals are particle-reactive so that as they enter riverine or estuarine waters, they are rapidly absorbed onto suspended matter and ulti­ mately removed to coastal bottom sediments (De Groot et al., 1976; Santschi et al., I 984). Sampling...
Journal Article
Aquatic Ecosystem Health & Management (2018) 21 (4): 421–437.
Published: 02 October 2018
... cyanobacteria blooms. Toronto Harbour, by contrast, showed only moderate phosphorus enrichment and no nitrogen limitation, but some silica depletion; phytoplankton was dominated by smaller flagellates and pennate diatoms. Our findings suggest that while phosphorus was a key factor causing cultural...
FIGURES | View All (5)
Journal Article
Aquatic Ecosystem Health & Management (2016) 19 (4): 382–392.
Published: 01 October 2016
... to nutrient enrichment and phytoplankton productivity based on a model that introduces an efficiency factor. They found that estuaries with a river-to-estuary volume ratio Q/V >2, on an annual basis, are much more susceptible to eutrophication than estuaries with a Q/V ranging from 0.2 to 0.3. Guaymas Bay...
FIGURES
Includes: Supplementary data
Journal Article
Aquatic Ecosystem Health & Management (2012) 15 (3): 287–293.
Published: 01 July 2012
.... , Loong , T. S. , Hoque , T. M. and Sulaiman , A. H. 1999 . The GEF/ UNDP/IMO Malacca straits demonstration project: Sources of pollution . Mar. Pollut. Bull. , 39 : 229 – 33 . Abrahim , G. M.S. and Parker , R. J. 2008 . Assessment of heavy metal enrichment factors...
FIGURES
Journal Article
Aquatic Ecosystem Health & Management (2003) 6 (2): 177–183.
Published: 01 April 2003
...Kevin J. Cash; Joseph M. Culp; Monique G. Dubé; Richard B. Lowell; Nancy E. Glozier; Robert B. Brua Assessing ecosystem health of large rivers is often complicated because these ecosystems receive multiple, interacting effluent discharges. Confounding factors, such as complicated mixing hydraulics...
Journal Article
Aquatic Ecosystem Health & Management (2001) 4 (2): 123–138.
Published: 01 June 2001
..., 24 h and 48 h. Samples showing fluorescence 30% higher than the initial value 48 hours after nutrient enrichment were considered as positively responding to the nutritive stimulation. 2.4 Data processing Hydrological factors (depth, Secchi depth, tempera- ture and oxygen saturation at 50 cm below...
Journal Article
Aquatic Ecosystem Health & Management (2006) 9 (3): 351–356.
Published: 01 September 2006
... should consider both the coupling of nitrate reduction of river water nitrate and nitrification of nitrogen in nitrogen-enriched lake sediment. Nitrification in bottom sediment is a significant nitrate source and should be regarded as important factor in the determination of the maximum daily load...
FIGURES
Journal Article
Aquatic Ecosystem Health & Management (2003) 6 (3): 241–250.
Published: 01 September 2003
... to their putative food, the small-sized seston frac- tions, was 2 3 , when the normal enrichment factor between trophic levels is between 0 and 1 (Vander Zanden and Rasmussen, 2001). Likewise, 13C enrich- ment from zooplankton to planktivorous fish (1.4 1.9 ) was higher than usual, and also the difference...
Journal Article
Aquatic Ecosystem Health & Management (2017) 20 (4): 457–464.
Published: 02 October 2017
... Foundation of China (41373120) and the Key Project of Natural Sciences of the Department of Sichuan Provincial Education (15ZA0077, 16ZA0098) financially supported this research References Abrahim , G. M. S. , Parker , R. J. , 2008 . Assessment of heavy metal enrichment factors...
FIGURES | View All (5)
Journal Article
Aquatic Ecosystem Health & Management (2013) 16 (4): 454–464.
Published: 01 October 2013
... having very high sediment load (annually 560 million tons) and strong tides, up to 5.5 m. In the suspended sediments higher enrichment factor for Cu, Cd, Ni, Cr and Zn was recorded due to anthropogenic activities related to poor land uses for urbanization and industrialization. The wastewater from...
FIGURES
Includes: Supplementary data
Journal Article
Aquatic Ecosystem Health & Management (2005) 8 (3): 223–233.
Published: 01 July 2005
... of their enrichment factors in Himalayan lichens . Environ. Pollut. , 120 : 137 – 144 . [PUBMED] [INFOTRIEVE] [CSA] [CROSSREF] Blais , J. M. , Schindler , D. W. , Muir , D. C. G. , Kimpe , L. E. , Donald , D. B. and Rosenberg , B. 1998 . Accumulation of persistent...
FIGURES
Journal Article
Aquatic Ecosystem Health & Management (1999) 2 (2): 115–127.
Published: 01 January 1999
... Creek 0.284 0.41 0.51 0.81 0.81 Tyner Creek 0.548 0.56 1.08 1.12 1.04 a Measured as chlorophyll a production (p.g cm-2) over 13 d on a control surface. in the response of the periphytic community to nutrient enrichment (Table 6(c The implication is that some factor other than nutrients was limiting...