Environmental impacts of increasing leisure boating activity in Mediterranean coastal waters

Carreño, Arnau; Lloret, Josep

doi:10.1016/j.ocecoaman.2021.105693

Cited by 47 publications

(29 citation statements)

References 99 publications

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“…Knysna also supports the highest macrobenthic biodiversity of any known South African estuary (Turpie 2004 ; Turpie et al 2004 ), containing some 40 + % of that country’s estuarine total (Claassens et al 2020 ); and within the Knysna system the most biodiverse region is its marine embayment wherein is located the Thesen marina (Barnes 2021 ). Clearly the construction of even marina estates on brownfield land within ‘nationally important’ areas of the ‘highest conservation priority’, as is the case with Knysna (Turpie et al 2002 ; van Niekerk et al 2019 ), is to say the least questionable (Barnes 1991 ; Airoldi and Beck 2007 ), not only because of the disturbance associated with the construction processes themselves (Iannuzzi et al 1996 ; Prosser et al 2018 ) and the danger of contamination (Leger et al 2016 ), but also because of the effects thereafter of boat traffic (Sagerman et al 2020 ; Carreño and Lloret 2021 ). In such a context, however, it is more than a little ironic that the region of highest Zostera -associated macrobenthic biodiversity within Knysna’s marine embayment, and hence in the whole of South Africa, is located in an artificial gabion-lined canal system, and that the canals also shelter two IUCN-listed endangered species.…”

Section: Discussionmentioning

confidence: 99%

Where ecologically ‘tis better to go brown than green: enhanced seagrass macrobenthic biodiversity within the canals of a brownfield coastal marina

2022

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At the start of the 21st century, a coastal residential-estate marina was developed on a previously degraded and polluted brownfield island site within Knysna estuarine bay, Garden Route National Park, South Africa, including the creation of 25 ha of new flow-through tidal canals. Canals near the larger entrance to this system now support permanently submerged beds of seagrass, which in turn support abundant macrobenthic invertebrates. In comparison with equivalent seagrass-associated assemblages present in natural channels around the island, those in the artificial marina canals were similarly structured and dominated by the same species, but the marina assemblages were significantly more species-rich (1.4 x on average) and were more abundant. Indeed, this area of marina supports the richest seagrass-associated macrofaunal biodiversity yet recorded from South Africa. The canals created de novo therefore now form a valuable addition to the bay’s marine habitat, in marked contrast to the generality that marinas developed on greenfield sites represent a net reduction in intertidal and shallow marine area and associated seagrass-associated benthos. If located and constructed appropriately, brownfield marina development and conservation of coastal marine biodiversity clearly need not be antithetical, and brownfield sites may provide opportunity for the location and management of ‘artificial marine micro-reserves’ or for the action of ‘other effective area-based conservation measures’ for soft-sediment faunas.

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Section: Discussionmentioning

confidence: 99%

Where ecologically ‘tis better to go brown than green: enhanced seagrass macrobenthic biodiversity within the canals of a brownfield coastal marina

2022

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“…Marine pollution, including that from AF paints, disrupts coastal ecosystems where usually plentiful economic activity takes place. A recent meta-study on the environmental impact of leisure vessels in Mediterranean coastal areas included antifouling paints (alongside anchoring and engine noise disturbance) amid the three most impactful ("high-risk") pollution typologies strongly affecting fragile organisms and habitats [33].…”

Section: Social Insightmentioning

confidence: 99%

Sustainability Evaluation of AquaSun Antifouling Coating Production

2022

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Relying on a cost-effective and green process that is technically and economically feasible on large scale is not enough to call a technology “sustainable”. We thus evaluate the sustainability of the production of the new “AquaSun” antifouling sol–gel coating with reference to each of the three main dimensions (economic, social, and environmental) of sustainable development. This study will hopefully assist in overcoming the “not invented here” syndrome that still affects many sol–gel technologies, including antifouling coatings derived via the sol–gel process.

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“…Humans can be exposed to PAHs via inhalation, ingestion, or dermal contact (Zhang et al, 2021). In the case of lake contamination with PAHs, ingestion of fish or other seafood is a notable pathway of human exposure (Carreño & Lloret, 2021). Specifically, PAHs can biomagnify up an aquatic trophic chain, eventually reaching humans where they can induce short and long-term health effects (Carreño & Lloret, 2021).…”

Section: Impact Of Fuel Spills From a One Health Perspectivementioning

confidence: 99%

The utilization of hydrophobic wax beads for the absorption of gas particles: A one health approach to address fuel spills in lake Muskoka

Klawitter¹,

Cook²,

Wallace³

et al. 2022

OHI

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The prevalence of recreational, motorized boating on freshwater lakes has significantly increased in the last decades. Consequently, there has been an increase in fuel spills and an accumulation of toxic polycyclic aromatic hydrocarbons (PAHs), which can have significant adverse health impacts on humans, non-human animals, and the environment. As previous initiatives to clean up spills have often been invasive, tough to follow, and environmentally intolerant, a One Health approach is necessary to address this issue. This article proposes a cost-effective and environmentally friendly solution to remove PAHs from Lake Muskoka in Ontario, Canada. The solution, based on principles of hydrophobic interactions, employs Carnauba wax beads in mesh cages to absorb PAHs from the water. This natural absorbent technology could lead to improvements in the overall quality of life and health of humans, non-human animals, and the environment. If deemed successful, this technology may be adapted to other bodies of water to mitigate the damage of PAHs on freshwater ecosystems.

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Environmental impacts of increasing leisure boating activity in Mediterranean coastal waters

Cited by 47 publications

References 99 publications

Where ecologically ‘tis better to go brown than green: enhanced seagrass macrobenthic biodiversity within the canals of a brownfield coastal marina

Where ecologically ‘tis better to go brown than green: enhanced seagrass macrobenthic biodiversity within the canals of a brownfield coastal marina

Sustainability Evaluation of AquaSun Antifouling Coating Production

The utilization of hydrophobic wax beads for the absorption of gas particles: A one health approach to address fuel spills in lake Muskoka

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