Measuring the impact of pollution closures on commercial shellfish harvest: The case of soft-shell clams in Machias Bay, Maine

Evans, Keith S.; Athearn, Kevin; Chen, Xuan; Bell, Kathleen P.; Johnson, Tora

doi:10.1016/j.ocecoaman.2016.06.005

Cited by 30 publications

(7 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The intertidal zone sits as the ecotone between marine and terrestrial environments and is vulnerable to the influences of SST change. Many foundational concepts in ecology have been developed in the intertidal environment [13,14], which is also prized for its economic benefits [15][16][17][18], cultural significance [19], and ease of study [20,21]. Intertidal ecological communities can vary significantly across small spatial scales [22][23][24] and in response to the cumulative effects of ecological determinants through time.…”

Section: Introductionmentioning

confidence: 99%

Spatial variation and antecedent sea surface temperature conditions influence Hawaiian intertidal community structure

et al. 2023

View full text Add to dashboard Cite

Global sea surface temperatures (SSTs) are increasing, and in Hawaiʻi, rates of ocean warming are projected to double by the end of the 21st century. However, current nearshore warming trends and their possible impacts on intertidal communities are not well understood. This study represents the first investigation into the possible effects of rising SST on intertidal algal and invertebrate communities across the Main Hawaiian Islands (MHI). By utilizing citizen-science data coupled with high-resolution, daily SST satellite measurements from 12 intertidal sites across the MHI from 2004–2019, the response of intertidal algal and invertebrate abundance and community diversity to changes in SST was investigated across multiple spatial scales. Results show high rates of SST warming (0.40°C Decade-1) over this study’s timeframe, similar to predicted rates of warming for Hawaiʻi by the end of the 21st century. Changes in abundance and diversity in response to SST were variable among intertidal sites, but differences in antecedent SST among intertidal sites were significantly associated with community dissimilarity. In addition, a statistically significant positive relationship was found between SST and Simpson’s diversity index, and a significant relationship was also found between SST and the abundance of six dominant taxa. For five of these six dominant taxa, antecedent SSTs over the 6–12 months preceding sampling were the most influential for describing changes to abundance. The increase in community diversity in response to higher SSTs was best explained by temperatures in the 10 months preceding sampling, and the resultant decreased abundance of dominant turf algae. These results highlight rapidly warming nearshore SSTs in Hawaiʻi and the longer-term effects of antecedent SSTs as significant drivers of change within Hawaiian intertidal communities. Therefore, we suggest that future research and management should consider the possibility of lagging effects of antecedent SST on intertidal communities in Hawaiʻi and elsewhere.

show abstract

Section: Introductionmentioning

confidence: 99%

Spatial variation and antecedent sea surface temperature conditions influence Hawaiian intertidal community structure

et al. 2023

View full text Add to dashboard Cite

show abstract

“…Such pollutants can be persistent and bioaccumulate in wildlife, with trace concentrations building up over time and polluting the food chain, as well as potentially contaminating Environmental Science: Water Research & Technology Paper groundwater intended for potable use. CSO discharges can also lead to the deterioration of the ecological and chemical status of the receiving waterbodies, 25,60,61 alter their physical characteristics, 62,63 cause significant visual or aesthetic impacts, 13,64 lead to shellfish harvesting and beach closures, [65][66][67] threat drinking water supplies and instigate public health concerns from risks to recreational uses. 68 Most recently, microplastics and nanoparticles in untreated wastewater have been a source of concern, 69 being recognised as a threat, both directly and as vectors for persistent organic pollutants adsorbed onto their surfaces.…”

Section: A Cause Of Concern?mentioning

confidence: 99%

Combined sewer overflows: relating event duration monitoring data to wastewater systems' capacity in England

Giakoumis

Voulvoulis

2023

Environ. Sci.: Water Res. Technol.

View full text Add to dashboard Cite

show abstract

“…The consumption of shell sh contaminated with microbiological pathogens can cause illness, which impacts directly on the industry through loss of sales and loss of consumer con dence, and may also have cascading effects on health services (Campos & Lees, 2014). Pollution events causing shell sh harvest closures represent a real cost to coastal communities that are socially and nancially dependent on these resources (Evans et al, 2016). To protect the health of consumers and ensure a viable industry, many countries undertake hygiene controls at the primary production and processing stages.…”

Section: Introductionmentioning

confidence: 99%

Using a weight of evidence approach to identify sources of microbiological contamination in a shellfish-growing area with “Restricted” classification

Campos

Kelly

Banks

2023

Environ Monit Assess

View full text Add to dashboard Cite

Shell sh growing areas in rural catchments are occasionally affected by elevated faecal contamination from diffuse sources and may be subject to frequent harvest closures/classi cation downgrades. We combined traditional risk management methods based on sanitary surveys and monitoring of Escherichia coli in seawater and shell sh with faecal source tracking, bacterial source apportionment, and hydrometeorological modelling to determine the causes of elevated E. coli concentrations contributing to harvest closures in Papanui Inlet (Aotearoa New Zealand). These multiple lines of evidence were used to inform a weight of evidence assessment of bacterial contamination in the inlet. Ruminant livestock was estimated to contribute 80% of the faecal coliform loading. Concentrations of E. coli in seawater were low (≤ 87 MPN 100 ml − 1 ) while those in tuaki (Austrovenus stutchburyi) occasionally exceeded the "Approved" classi cation limit (230 MPN 100 g − 1 ). The most frequent positive genetic markers in seawater were the seagull (Catellicoccus marimammalium) (54% of seawater samples), and in shell sh, the bovine and seagull markers (both 12.5% of shell sh samples). Solar radiation was negatively correlated with E. coli in tuaki. We found that the growing area is affected by faecal inputs from animal and, to a lesser extent, human (septic tank discharges) sources which elevate contamination to levels detectable in tuaki but not in seawater, particularly in the summer months. The innovative approach can enhance the management of shell sh growing areas affected by intermittent contamination and enables more targeted action to reduce pollution to improve shell sh water quality.

show abstract

Measuring the impact of pollution closures on commercial shellfish harvest: The case of soft-shell clams in Machias Bay, Maine

Abstract: 2016-11-03T14:11:40

Cited by 30 publications

References 29 publications

Spatial variation and antecedent sea surface temperature conditions influence Hawaiian intertidal community structure

Spatial variation and antecedent sea surface temperature conditions influence Hawaiian intertidal community structure

Combined sewer overflows: relating event duration monitoring data to wastewater systems' capacity in England

Using a weight of evidence approach to identify sources of microbiological contamination in a shellfish-growing area with “Restricted” classification

Contact Info

Product

Resources

About