Impact of suspended and off-bottom Eastern oyster culture on the benthic environment in eastern Canada

Mallet, André L.; Carver, Claire E.; Landry, Thomas

doi:10.1016/j.aquaculture.2005.11.054

Cited by 87 publications

(44 citation statements)

References 24 publications

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“…ND not determined invertebrate abundance (1,261-19,930 individuals/m 2 ) than those of this study and a range of taxa from 2-35 depending on the sampling location. All of the sites sampled by Miron et al (2005), Mallet et al (2006), and Lu et al (2008) were similar to those sampled in our study, i.e., the main anthropogenic influence was from waters draining low-density agricultural and residential areas as well as forested areas (based on aerial photography and site visits). Those sites were also influenced by some oyster aquaculture (Miron et al 2005;Mallet et al 2006;Lu et al 2008).…”

Section: Resultsmentioning

confidence: 97%

“…All of the sites sampled by Miron et al (2005), Mallet et al (2006), and Lu et al (2008) were similar to those sampled in our study, i.e., the main anthropogenic influence was from waters draining low-density agricultural and residential areas as well as forested areas (based on aerial photography and site visits). Those sites were also influenced by some oyster aquaculture (Miron et al 2005;Mallet et al 2006;Lu et al 2008). The density of invertebrates at some of our sampling stations was greater than those of Mallet et al (2006) and less than those of Lu et al (2008).…”

Section: Resultsmentioning

confidence: 97%

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Analysis of Benthic Invertebrate Communities as a Function of Distance from Two Fish-Processing Plant Effluent Discharges in New Brunswick, Canada

Lalonde

Ernst

2012

Arch Environ Contam Toxicol

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Benthic invertebrate communities have been known to change due to impacts from nutrient-rich industrial outputs, such as those from pulp and paper, sewage-treatment plants, or aquaculture. Fish-processing plants have been recognized as contributors of large volumes of nutrient rich effluent to marine and estuarine environments, but their effect on benthic invertebrate communities is unknown. Benthic invertebrates and sediment samples were obtained from marine sampling stations at 0-, 10-, 30-, and 100-m distances from two fish-processing outfalls in Atlantic Canada. Sediment grain size, total organic carbon (TOC), ammonia, sulphide, and redox, as well as invertebrate abundance, density, taxa richness, Simpson's Inverse Diversity Index, Bray-Curtis Index of (%) Similarity, and the AZTI marine biotic index (AMBI), were determined for all sampling sites. Results from this study illustrate that taxa richness and density significantly increased as distance from the outfall discharge increased. In our study, TOC was only significantly correlated to AMBI but not to the other benthic invertebrate assemblage descriptors calculated in this study (invertebrate density, taxa richness, Simpson's Inverse Diversity Index). The study results suggest that taxa richness and density may be affected by effluent from fish-processing plants.

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Section: Resultsmentioning

confidence: 97%

Section: Resultsmentioning

confidence: 97%

Analysis of Benthic Invertebrate Communities as a Function of Distance from Two Fish-Processing Plant Effluent Discharges in New Brunswick, Canada

Lalonde

Ernst

2012

Arch Environ Contam Toxicol

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“…Although a higher mean survival rate was observed in the 30 cm treatment group (P < 0.001), the mudflat could become enriched with organic matter from the cultured oysters (Mitchell, 2006), with substantial negative impacts on the benthic community (Tenore et al, 1982;Mallet et al, 2006).…”

Section: Discussionmentioning

confidence: 99%

Study on Optimal Condition for Oyster Rack Culture in terms of tidal exposure and rack height in Wando Coast, Korea

Han

Cho

2013

The Korean Journal of Malacology

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We investigated the growth performance of oysters (initial shell height 57.5 ± 8.5 mm) under differing conditions of tidal exposure time and culture rack height in an experiment that commenced in April, 2011. Significant differences were observed in shell height from June 2011, in total weight from August, and in meat weight from September. Fatness tended to decrease during the experimental period, but was not significantly different at the end of the experiment. Significant differences in survival rates were mainly observed from June to August. After September, further changes were not observed in any experimental treatment group. The greatest growth potential (L ∞ ) and survival rate were observed at a sea level of approximately 116 cm. The results indicate that in the study area the use of oyster culture conditions involving 1 or 2 h of tidal exposure and 60 -70 cm rack height could result in oysters reaching the favored commercial half shell size within 14 months, with > 80% survival.

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“…Furthermore, research on the mechanisms of interaction among nutrients, phytoplankton, seaweeds and cultured shellfish is limited. Recent results indicate that shellfish transform small particles into larger fecal and pseudofecal matter through the filtration process, thus increasing the sedimentation rate of particulate materials (Navarro & Thompon 1997, Giles & Pilditch 2006, Mallet et al 2006). In July 2002, in Sungo Bay, we found that the sedimentation rate of suspended particles in the mariculture area was 1.75 times that of the non-cultured area (Cai et al 2003).…”

Section: Discussionmentioning

confidence: 99%

Shellfish and seaweed mariculture increase atmospheric CO2 absorption by coastal ecosystems

Tang¹,

Zhang²,

Fang³

2011

Mar. Ecol. Prog. Ser.

157

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With an annual production of >10 million t (Mt), China is the largest producer of cultivated shellfish and seaweeds in the world. Through mariculture of shellfish and seaweeds, it is estimated that 3.79 ± 0.37 Mt C yr -1 are being taken up, and 1.20 ± 0.11 Mt C yr -1 are being removed from the coastal ecosystem by harvesting (means ± SD). These estimates are based on carbon content data of both shellfish and seaweeds and annual production data from 1999 to 2008. The result illustrates that cultivated shellfish and seaweeds can indirectly and directly take up a significant volume of coastal ocean carbon -shellfish accomplish this by removal of phytoplankton and particulate organic matter through filter feeding, and seaweeds through photosynthesis. Thus, cultivation of seaweeds and shellfish plays an important role in carbon fixation, and therefore contributes to improving the capacity of coastal ecosystems to absorb atmospheric CO 2 . Because the relationship between mariculture and the carbon cycle of the coastal ecosystem is complicated and the interaction between the 2 processes is significant, such studies should be continued and given high priority.

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Impact of suspended and off-bottom Eastern oyster culture on the benthic environment in eastern Canada

Cited by 87 publications

References 24 publications

Analysis of Benthic Invertebrate Communities as a Function of Distance from Two Fish-Processing Plant Effluent Discharges in New Brunswick, Canada

Analysis of Benthic Invertebrate Communities as a Function of Distance from Two Fish-Processing Plant Effluent Discharges in New Brunswick, Canada

Study on Optimal Condition for Oyster Rack Culture in terms of tidal exposure and rack height in Wando Coast, Korea

Shellfish and seaweed mariculture increase atmospheric CO2 absorption by coastal ecosystems

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