Long Bay Hypoxia Monitoring Consortium

Libes, Susan; Trapp, J. M.; Kindelberger, Scott; Doremus, Danielle

doi:10.34068/jscwr.01.04

Cited by 3 publications

(2 citation statements)

References 4 publications

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“…Following the discovery of hypoxic conditions, continuous measurements of water quality parameters were initiated in surface and bottom waters at the seaward end of Apache fishing pier (Figure 1), about 250 m offshore where water depths range from 5 to 7 m (Libes and Kindelberger, 2010). Two additional piers were similarly instrumented in 2012, providing spatial coverage of approximately 35 km along the coastline of Long Bay (Libes et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

A new perspective on coastal hypoxia: The role of saline groundwater

et al. 2016

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Processes leading to the development of coastal hypoxia are usually attributed to anthropogenic nutrient loading. We present new evidence documenting a natural process capable of producing large-scale water masses undersaturated with respect to dissolved oxygen, independent of human-caused nutrient loading and subsequent nutrient-enhanced productivity. Along the heavily developed coastline of Myrtle Beach, South Carolina, the offshore discharge of saline, anoxic groundwater generates undersaturated bottom water masses which can be advected into nearshore waters. Highly elevated radium isotope activities measured in lowoxygen bottom waters cannot be supported by any known terrestrial source. Rather, discharge of cold, anoxic, high-radium water from offshore carbonate aquifers is the likely source. Density stratification inhibits mixing of these discharged waters during inshore transport. During a lowoxygen event in August 2012, this restricted mixing is likely the mechanism for the observed oxygen deficit in bottom waters. This discovery suggests benthic layers undersaturated with respect to dissolved oxygen may be considerably more prevalent than currently recognized, particularly around the carbonate-platform of the US east coast.

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Section: Introductionmentioning

confidence: 99%

A new perspective on coastal hypoxia: The role of saline groundwater

et al. 2016

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“…Based on USNO times for sunset and sunrise (http://www.aa.usno.navy.mil). Sea surface temperature, barometric pressure and turbidity (to test detection efficiency) data were gathered from a monitoring station at 2nd Avenue Pier as part of the Long Bay Hypoxia Monitoring Consortium (Libes & Kindelberger, ) and accessed online (http://www.sutronwin.com). Following hurricane Matthew, the monitoring equipment on 2nd Avenue Pier could not be reinstalled until early 2017.…”

Section: Methodsmentioning

confidence: 99%

Blacktip shark Carcharhinus limbatus presence at fishing piers in South Carolina: association and environmental drivers

Martin

Abel

Crane

et al. 2019

Journal of Fish Biology

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We tagged 12 Carcharhinus limbatus with acoustic transmitters and monitored their presence at five piers along the north‐east coast of South Carolina, USA in 2016 and four piers in 2017 using acoustic receivers. Data were analysed with pier association indices (PAI), mixed models and fast Fourier transformation analyses to identify potential factors related to residence time and presence at piers and any cyclical patterns in visits to piers. While the majority of monitored C. limbatus were infrequently detected at piers, three (25.0%) were highly associated with piers (PAI ≥ 0.50). Of the C. limbatus that were detected after initial capture, three (25.0%) recorded detection events only at the pier where they were tagged and two individuals (16.7%) recorded at least one detection event at all monitored piers. The best‐fit model explaining C. limbatus residence time at piers included terms for pier location and diel cycle (wi = 0.88), whereas the best fit model explaining presence–absence of C. limbatus at piers included terms for tidal height, diel cycle, barometric pressure and angler count (wi = 0.98). Carcharhinus limbatus did not appear to display cyclical patterns in their visits to piers. Along the north‐east coast of South Carolina, association of C. limbatus with piers is a phenomenon for a proportion of mature individuals, but continued research is necessary to understand if this behaviour is driven by attraction to and feeding on angler discards or increased foraging opportunities resulting from the attraction of potential prey to the physical structure provided by piers.

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