Impact of fish farms on maerl beds in strongly tidal areas

Hall-Spencer, Jason M.; White, Nicola; Gillespie, E.J.; Gillham, Katie; Foggo, Andy

doi:10.3354/meps326001

Cited by 92 publications

(74 citation statements)

References 14 publications

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“…Maerl beds already have to withstand human-induced pressures, e.g. dredging (Hall-Spencer & Moore, 2000) and fish farming (Hall-Spencer et al, 2006), that inhibit 4 their ability to provide complex habitats. With the added stressor of climate change these organisms will be under mounting pressure.…”

Section: Introductionmentioning

confidence: 99%

There is more to maerl than meets the eye: DNA barcoding reveals a new species in Britain,Lithothamnion erinaceumsp. nov. (Hapalidiales, Rhodophyta)

Melbourne

Lujan-Hernandez

Russell

et al. 2017

European Journal of Phycology

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There is more to maerl than meets the eye: DNA barcoding reveals a new species in Britain, Lithothamnion erinaceum sp. nov. (Hapalidiales, Rhodophyta) University of Bristol -Explore Bristol Research General rightsThis document is made available in accordance with publisher policies. Please cite only the published version using the reference above. Full terms of use are available: http://www.bristol.ac.uk/pure/about/ebr-terms Lithothamnion lemoineae, which had earlier been recorded from Britain, was not present. One of the biggest concerns at present is how organisms will respond to climate change and ocean acidification, and it is imperative that investigations are put on a firm taxonomic basis. Our study has highlighted the importance of using molecular techniques to aid in the elucidation of cryptic diversity.

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Section: Introductionmentioning

confidence: 99%

There is more to maerl than meets the eye: DNA barcoding reveals a new species in Britain,Lithothamnion erinaceumsp. nov. (Hapalidiales, Rhodophyta)

Melbourne

Lujan-Hernandez

Russell

et al. 2017

European Journal of Phycology

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“…As the present work shows with unattached coralline algae beds, different habitats may have different degrees of sensitivity to contamination. Very similar impact levels and their spatial extent were observed in Scottish Maërl beds as regards H', in open water sites (Hall-Spencer et al 2006). Consequently, the assessment of any impact of aquaculture on the benthos has to take into account the fact that the chemical and biological changes produced in the sediment may be highly dependent on the communities inhabiting the affected ecosystems.…”

mentioning

confidence: 95%

“…The influence of finfish farming among vegetated beds, finfish farming influence has been studied to some extent (e.g. Ruiz et al 2001, Holmer et al 2004, Apostolaki et al 2010, while, as regards Maërl beds, to the best of our knowledge, only one study, performed in Scotland, that has looked at the impact of aquaculture in this type of habitat (Hall-Spencer et al 2006).…”

Section: Introductionmentioning

confidence: 99%

Relationship between sedimentation rates and benthic impact on Maërl beds derived from fish farming in the Mediterranean

Sanz‐Lázaro

Belando

Marín-Guirao

et al. 2011

Marine Environmental Research

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The aim of this work was to study the dispersion of particulate wastes derived from marine fish farming and correlate the data with the impact on the seabed. Carbon and nutrients were correlated with the physico-chemical parameters of the sediment and the benthic community structure. The sedimentation rates in the benthic system were 1.09, 0.09 and 0.13 g m Therefore, the level of fish farm impact on the benthic community might be underestimated if it is assessed by merely taking into account data obtained from waste dispersion rates. The benthic habitat beneath the fish farm, Maërl bed, was seen to be very sensitive to aquaculture impact compared with other unvegetated benthic habitats, with an estimated POC-carrying capacity to maintain current diversity of 0.087 g C m -2 day -1 (only 36% greater than the basal POC input). Environmental protection agencies should define different aquaculture waste load thresholds for different benthic communities affected by finfish farming, according to their particular degree of sensitivity, in order to maintain natural ecosystem functions.

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“…Other direct threats include habitat removal through offshore construction activities and the commercial extraction of maerl (Birkett et al, 1998). Increased sedimentation and turbidity, as a result of eutrophication, waste discharge, fish farming, construction works and nearby trawling pose also serious threats to both bioconstructors and associated fauna of this biotope (Birkett et al, 1998;Hall-Spencer et al, 2006;AguadoGiménez & Ruiz-Fernández, 2012). The alien turf alga Acrothamnion preissii has been identified as invasive in maerl beds of the Western Mediterranean basin (Ferrer et al, 1994).…”

Section: Maerl Beds (Eunis A551)mentioning

confidence: 99%

Assessment of goods and services, vulnerability, and conservation status of European seabed biotopes: a stepping stone towards ecosystem-based marine spatial management

et al. 2012

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The goal of ecosystem-based marine spatial management is to maintain marine ecosystems in a healthy, productive and resilient condition; hence, they can sustainably provide the needed goods and services for human welfare. However, the increasing pressures upon the marine realm threaten marine ecosystems, especially seabed biotopes, and thus a well-planned approach of managing use of marine space is essential to achieve sustainability. The relative value of seabed biotopes, evaluated on the basis of goods and services, is an important starting point for the spatial management of marine areas. Herein, 56 types of European seabed biotopes and their related goods, services, sensitivity issues, and conservation status were compiled, the latter referring to management and protection tools which currently apply for these biotopes at European or international level. Fishing activities, especially by benthic trawls, and marine pollution are the main threats to European seabed biotopes. Increased seawater turbidity, dredged sediment disposal, coastal constructions, biological invasions, mining, extraction of raw materials, shipping-related activities, tourism, hydrocarbon exploration, and even some practices of scientific research, also exert substantial pressure. Although some first steps have been taken to protect the European sea beds through international agreements and European and national legislation, a finer scale of classification and assessment of marine biotopes is considered crucial in shaping sound priorities and management guidelines towards the effective conservation and sustainability of European marine resources.

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Impact of fish farms on maerl beds in strongly tidal areas

Cited by 92 publications

References 14 publications

There is more to maerl than meets the eye: DNA barcoding reveals a new species in Britain,Lithothamnion erinaceumsp. nov. (Hapalidiales, Rhodophyta)

There is more to maerl than meets the eye: DNA barcoding reveals a new species in Britain,Lithothamnion erinaceumsp. nov. (Hapalidiales, Rhodophyta)

Relationship between sedimentation rates and benthic impact on Maërl beds derived from fish farming in the Mediterranean

Assessment of goods and services, vulnerability, and conservation status of European seabed biotopes: a stepping stone towards ecosystem-based marine spatial management

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