Improvement of the sediment ecosystem following diversion of an intertidal sewage outfall at the Fraser river estuary, Canada, with emphasis on Corophium salmonis (amphipoda)
Primary treated sewage effluent from the city of Vancouver, Canada was deposited directly onto the intertidal ecosystem of Sturgeon bank, Fraser river estuary between 1962 and 1988. In response to the degraded sediment conditions an azoic zone developed near the discharge outfall. Effluent discharge...
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| Veröffentlicht in: | Marine pollution bulletin 2002-06, Vol.44 (6), p.511-519 |
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| creator | Arvai, J.L Levings, C.D Harrison, P.J Neill, W.E |
| description | Primary treated sewage effluent from the city of Vancouver, Canada was deposited directly onto the intertidal ecosystem of Sturgeon bank, Fraser river estuary between 1962 and 1988. In response to the degraded sediment conditions an azoic zone developed near the discharge outfall. Effluent discharges into the intertidal zone were almost completely stopped in 1988 with the construction of a submerged outfall. Our studies, conducted between 1994 and 1996, showed considerable improvement in the environment of the mudflat ecosystem, including increased dissolved oxygen, decreased sediment chlorophyll, decreased organic material in the sediment, reduced heavy metals in surficial sediment and increased grain size. The amphipod
Corophium salmonis, important in the food web for juvenile salmon and other fish species, recolonized the previously azoic location. At reference stations,
C. salmonis density was similar to that observed in previous surveys two decades earlier. Our data strongly suggest that improvement of sediment conditions near the former sewage outfall was a major factor enabling colonization by
C. salmonis. |
| doi_str_mv | 10.1016/S0025-326X(01)00264-8 |
| format | Article |
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Corophium salmonis, important in the food web for juvenile salmon and other fish species, recolonized the previously azoic location. At reference stations,
C. salmonis density was similar to that observed in previous surveys two decades earlier. Our data strongly suggest that improvement of sediment conditions near the former sewage outfall was a major factor enabling colonization by
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Corophium salmonis, important in the food web for juvenile salmon and other fish species, recolonized the previously azoic location. At reference stations,
C. salmonis density was similar to that observed in previous surveys two decades earlier. Our data strongly suggest that improvement of sediment conditions near the former sewage outfall was a major factor enabling colonization by
C. salmonis.</description><subject>Amphipoda</subject><subject>Amphipods</subject><subject>Animal, plant and microbial ecology</subject><subject>Animals</subject><subject>Applied ecology</subject><subject>Applied sciences</subject><subject>Biological and medical sciences</subject><subject>Biological and physicochemical properties of pollutants. Interaction in the soil</subject><subject>Brackish</subject><subject>Canada</subject><subject>Canada, Fraser R</subject><subject>Corophium salmonis</subject><subject>Crustacea</subject><subject>Earth sciences</subject><subject>Earth, ocean, space</subject><subject>Ecosystem</subject><subject>Ecotoxicology, biological effects of pollution</subject><subject>Engineering and environment geology. Geothermics</subject><subject>Exact sciences and technology</subject><subject>Food Chain</subject><subject>Fraser river estuary</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>Geologic Sediments - chemistry</subject><subject>Improvement</subject><subject>Indicator species</subject><subject>Marine and brackish environment</subject><subject>Metals, Heavy - adverse effects</subject><subject>Natural water pollution</subject><subject>Particle Size</subject><subject>Pollution</subject><subject>Pollution, environment geology</subject><subject>Population Dynamics</subject><subject>Salmon</subject><subject>Seawaters, estuaries</subject><subject>Secondary production</subject><subject>Sewage</subject><subject>Soil and sediments pollution</subject><subject>Tidal flat ecosystem</subject><subject>Waste Disposal, Fluid - methods</subject><subject>Water Pollutants - adverse effects</subject><subject>Water treatment and pollution</subject><issn>0025-326X</issn><issn>1879-3363</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2002</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqFkc9u1DAQxi0EokvhEUC-gFqpATuO7eSE0IpCpUocAImbNWtPukZJvNjOrvpSPCPeP6LHnqyxf9834_kIec3Ze864-vCdsVpWola_Lhi_LIVqqvYJWfBWd5UQSjwli__IGXmR0m_GmK41f07OeM0b1YpmQf7ejJsYtjjilGnoaV4jTej8oUYb0n3KONI-DEPY-emOOr_FmHyY9jRM1E8ZY_YOhqLbwR3SMOcehoFCPrhdR0gYadzrKKY8Q7y_okuYwMEV3fm8pjhu1pB8osV1GWLYrP080gTDGKZyewHl3W-Cg8uX5FnxTvjqdJ6Tn9effyy_VrffvtwsP91WtpEiVxxAa9k4Bu1KWFB6JcvfXdfWUoDtLUrswDUtCClcw1lT7leoukZIjWUucU7eHX3Lcv7MZWoz-mRxGGDCMCfDFRedqtXjYKPqrvQuoDyCNoaUIvZmE_1YdmE4M_tEzSFRs4_LMG4OiZq26N6cGsyrEd2D6hRhAd6eAEgWhj7CZH164IRmWnNZuI9HDsveth6jSdbjZEvYEW02LvhHRvkHs2HBOw</recordid><startdate>20020601</startdate><enddate>20020601</enddate><creator>Arvai, J.L</creator><creator>Levings, C.D</creator><creator>Harrison, P.J</creator><creator>Neill, W.E</creator><general>Elsevier Ltd</general><general>Elsevier</general><scope>IQODW</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7ST</scope><scope>C1K</scope><scope>SOI</scope><scope>7QH</scope><scope>7TN</scope><scope>7TV</scope><scope>7U7</scope><scope>7UA</scope><scope>F1W</scope><scope>H95</scope><scope>H97</scope><scope>L.G</scope></search><sort><creationdate>20020601</creationdate><title>Improvement of the sediment ecosystem following diversion of an intertidal sewage outfall at the Fraser river estuary, Canada, with emphasis on Corophium salmonis (amphipoda)</title><author>Arvai, J.L ; Levings, C.D ; Harrison, P.J ; Neill, W.E</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c453t-1aa7754d0a8b3ca67b5007d98253acfce5e9ad48a353d4104253be694357eada3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2002</creationdate><topic>Amphipoda</topic><topic>Amphipods</topic><topic>Animal, plant and microbial ecology</topic><topic>Animals</topic><topic>Applied ecology</topic><topic>Applied sciences</topic><topic>Biological and medical sciences</topic><topic>Biological and physicochemical properties of pollutants. Interaction in the soil</topic><topic>Brackish</topic><topic>Canada</topic><topic>Canada, Fraser R</topic><topic>Corophium salmonis</topic><topic>Crustacea</topic><topic>Earth sciences</topic><topic>Earth, ocean, space</topic><topic>Ecosystem</topic><topic>Ecotoxicology, biological effects of pollution</topic><topic>Engineering and environment geology. Geothermics</topic><topic>Exact sciences and technology</topic><topic>Food Chain</topic><topic>Fraser river estuary</topic><topic>Fundamental and applied biological sciences. 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In response to the degraded sediment conditions an azoic zone developed near the discharge outfall. Effluent discharges into the intertidal zone were almost completely stopped in 1988 with the construction of a submerged outfall. Our studies, conducted between 1994 and 1996, showed considerable improvement in the environment of the mudflat ecosystem, including increased dissolved oxygen, decreased sediment chlorophyll, decreased organic material in the sediment, reduced heavy metals in surficial sediment and increased grain size. The amphipod
Corophium salmonis, important in the food web for juvenile salmon and other fish species, recolonized the previously azoic location. At reference stations,
C. salmonis density was similar to that observed in previous surveys two decades earlier. Our data strongly suggest that improvement of sediment conditions near the former sewage outfall was a major factor enabling colonization by
C. salmonis.</abstract><cop>Oxford</cop><pub>Elsevier Ltd</pub><pmid>12146834</pmid><doi>10.1016/S0025-326X(01)00264-8</doi><tpages>9</tpages></addata></record> |
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| identifier | ISSN: 0025-326X |
| ispartof | Marine pollution bulletin, 2002-06, Vol.44 (6), p.511-519 |
| issn | 0025-326X 1879-3363 |
| language | eng |
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| source | MEDLINE; Access via ScienceDirect (Elsevier) |
| subjects | Amphipoda Amphipods Animal, plant and microbial ecology Animals Applied ecology Applied sciences Biological and medical sciences Biological and physicochemical properties of pollutants. Interaction in the soil Brackish Canada Canada, Fraser R Corophium salmonis Crustacea Earth sciences Earth, ocean, space Ecosystem Ecotoxicology, biological effects of pollution Engineering and environment geology. Geothermics Exact sciences and technology Food Chain Fraser river estuary Fundamental and applied biological sciences. Psychology Geologic Sediments - chemistry Improvement Indicator species Marine and brackish environment Metals, Heavy - adverse effects Natural water pollution Particle Size Pollution Pollution, environment geology Population Dynamics Salmon Seawaters, estuaries Secondary production Sewage Soil and sediments pollution Tidal flat ecosystem Waste Disposal, Fluid - methods Water Pollutants - adverse effects Water treatment and pollution |
| title | Improvement of the sediment ecosystem following diversion of an intertidal sewage outfall at the Fraser river estuary, Canada, with emphasis on Corophium salmonis (amphipoda) |
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