Data

A systematic review of literature that assess the effects of sewage disposal on soft sediment assemblages.

Australian Ocean Data Network
Morris, Liz
Viewed: [[ro.stat.viewed]] Cited: [[ro.stat.cited]] Accessed: [[ro.stat.accessed]]
ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rfr_id=info%3Asid%2FANDS&rft_id=https://catalogue.aodn.org.au:443/geonetwork/srv/api/records/3570a3a0-e106-11dc-9bba-00188b4c0af8&rft.title=A systematic review of literature that assess the effects of sewage disposal on soft sediment assemblages.&rft.identifier=https://catalogue.aodn.org.au:443/geonetwork/srv/api/records/3570a3a0-e106-11dc-9bba-00188b4c0af8&rft.description=This review was a synthesis of studies that monitored the effects of sewage disposal in the marine environment. Twenty studies that were conducted between 1973 and 1997 and met specific design requirements (i.e. no confounding factors, appropriate replication) were included in the review. Background data relating to discharge type, quantity, level of detail and sampling procedures of the investigation in each study were collated. Any impact that was detected was recorded for each endpoint. The magnitude of change or effect size was calculated for each study and was defined as the percent change at the impact site relative to the control sites. There were some consistencies in the monitoring strategies and benthic responses between studies in different areas. Multivariate indicators and population level analyses were the most sensitive measures for detecting sewage related impacts. Abundance usually increased at outfall sites relative to controls (30-250% magnitude of change) while species richness, diversity and evenness tended to decrease (16-90% magnitude of change). The geographic extent of the studies were limited to temperate regions except for 1 study that was conducted in Antarctica.Maintenance and Update Frequency: notPlannedStatement: Searches were conducted on 3 databases (Biological Abstracts, Current Contents and Web of Science) for peer reviewed journal articles that were written in English and considered the effects of sewage effluent or sewage sludge from a point source on macroinfaunal invertebrate assemblages. Monitoring studies that were taken in a single gradient direction were excluded as they might represent a spatial gradient rather than a pollution gradient. Similarly, studies that were confounded with the effects of depth or time were also excluded. In studies were a control versus impact approach was used, more than 1 control site was required to be included in the review. Studies were also required to have replicate samples at each station to ensure that the estimates of the means used to infer an effect had reasonable precision.&rft.creator=Morris, Liz &rft.date=2008&rft.coverage=westlimit=144.30; southlimit=-38.30; eastlimit=145.20; northlimit=-37.80&rft.coverage=westlimit=144.30; southlimit=-38.30; eastlimit=145.20; northlimit=-37.80&rft_rights=Contact author for access to data&rft_rights=This metadata may be downloaded for the use in accordance with the Copyright Act 1968&rft_subject=biota&rft_subject=Oceans | Marine Biology | Marine Invertebrates | infauna&rft_subject=Biosphere | Zoology | Invertebrates&rft_subject=Human Dimensions | Environmental Impacts | Sewage | effluent&rft_subject=EUTROPHICATION&rft_subject=EARTH SCIENCE&rft_subject=HUMAN DIMENSIONS&rft_subject=HABITAT CONVERSION/FRAGMENTATION&rft_subject=COMMUNITY STRUCTURE&rft_subject=BIOSPHERE&rft_subject=ECOLOGICAL DYNAMICS&rft_subject=COMMUNITY DYNAMICS&rft_subject=Biosphere | Ecological Dynamics | Predation | shorebirds&rft_subject=Biosphere | Ecological Dynamics | Trophic Dynamics | resource enhancement | predation&rft_subject=Biosphere | Aquatic Habitat | Benthic Habitat | soft sediment | mudflat&rft.type=dataset&rft.language=English Access the data
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Brief description

This review was a synthesis of studies that monitored the effects of sewage disposal in the marine environment. Twenty studies that were conducted between 1973 and 1997 and met specific design requirements (i.e. no confounding factors, appropriate replication) were included in the review. Background data relating to discharge type, quantity, level of detail and sampling procedures of the investigation in each study were collated. Any impact that was detected was recorded for each endpoint. The magnitude of change or effect size was calculated for each study and was defined as the percent change at the impact site relative to the control sites. There were some consistencies in the monitoring strategies and benthic responses between studies in different areas. Multivariate indicators and population level analyses were the most sensitive measures for detecting sewage related impacts. Abundance usually increased at outfall sites relative to controls (30-250% magnitude of change) while species richness, diversity and evenness tended to decrease (16-90% magnitude of change). The geographic extent of the studies were limited to temperate regions except for 1 study that was conducted in Antarctica.

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Maintenance and Update Frequency: notPlanned
Statement: Searches were conducted on 3 databases (Biological Abstracts, Current Contents and Web of Science) for peer reviewed journal articles that were written in English and considered the effects of sewage effluent or sewage sludge from a point source on macroinfaunal invertebrate assemblages. Monitoring studies that were taken in a single gradient direction were excluded as they might represent a spatial gradient rather than a pollution gradient. Similarly, studies that were confounded with the effects of depth or time were also excluded. In studies were a control versus impact approach was used, more than 1 control site was required to be included in the review. Studies were also required to have replicate samples at each station to ensure that the estimates of the means used to infer an effect had reasonable precision.

Notes

Credit
Keough, M.J., Prof
Purpose
To review the literature and address the following questions about sewage disposal in marine environments: 1. What indicators are most commonly used in the monitoring of putative impacts in soft sediments? 2. How sensitive are these indicators in detecting impacts from sewage disposal. 3. Is there consistency between studies relating to the direction and magnitude of change in the indicators and is the magnitude of change considered a biologically important effect? 4. Do any characteristics of the studies influence the direction and magnitude of the observed effects?

Created: 15 02 2008

Data time period: 1997-10-01 to 1997-10-14

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145.2,-37.8 145.2,-38.3 144.3,-38.3 144.3,-37.8 145.2,-37.8

144.75,-38.05

text: westlimit=144.30; southlimit=-38.30; eastlimit=145.20; northlimit=-37.80

Subjects
BIOSPHERE | Biosphere | Aquatic Habitat | Benthic Habitat | soft sediment | mudflat | Biosphere | Ecological Dynamics | Predation | shorebirds | Biosphere | Ecological Dynamics | Trophic Dynamics | resource enhancement | predation | Biosphere | Zoology | Invertebrates | COMMUNITY DYNAMICS | Community Structure | EARTH SCIENCE | ECOLOGICAL DYNAMICS | Eutrophication | HABITAT CONVERSION/FRAGMENTATION | HUMAN DIMENSIONS | Human Dimensions | Environmental Impacts | Sewage | effluent | Oceans | Marine Biology | Marine Invertebrates | infauna | biota |

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  • global : 3570a3a0-e106-11dc-9bba-00188b4c0af8
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