Natural recolonisation of seagrasses at a disused sewage sludge outfall

Bryars, Simon; Neverauskas, V.P.

doi:10.1016/j.aquabot.2004.09.001

Cited by 38 publications

(22 citation statements)

References 4 publications

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“…It seems likely that the well documented cases of Posidonia loss due to eutrophication (e.g. Cockburn Sound, WA (Silberstein et al, 1986) and Adelaide Waters, SA (Bryars and Neverauskas, 2004)) have influenced viewpoints regarding the rationale and approach for managing and monitoring seagrass habitat. The significant challenges which are associated with restoration of Posidonia meadows (e.g.…”

Section: Existing Protection Of Seagrass In Australia -Legislation Anmentioning

confidence: 99%

Unravelling complexity in seagrass systems for management: Australia as a microcosm

Kilminster

McMahon

Waycott

et al. 2015

Science of The Total Environment

249

253

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Section: Existing Protection Of Seagrass In Australia -Legislation Anmentioning

confidence: 99%

Unravelling complexity in seagrass systems for management: Australia as a microcosm

Kilminster

McMahon

Waycott

et al. 2015

Science of The Total Environment

249

253

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“…Seagrass beds are particularly sensitive to eutrophication (Burkholder et al 2007, van Katwijk et al 2010. Nutrient reduction measures have been applied, but seagrass recovery has not been observed in the Baltic Sea for various possible reasons (Munkes 2005, HELCOM 2007c, Nyqvist et al 2009, Baden et al 2012, despite promising examples elsewhere (e.g., Bryars and Neverauskas 2004, Tomasko et al 2005, Orth et al 2006, Cardoso et al 2010, Vaudrey et al 2010, Dolch et al 2013). Seagrass recovery is generally a slow process, which can last for decades, and it is questionable whether the ecosystem can ever be returned to its original state.…”

Section: Ecological Consequences Of the Delaysmentioning

confidence: 99%

Coping with persistent environmental problems: systemic delays in reducing eutrophication of the Baltic Sea

Varjopuro¹,

Andrulewicz²,

Blenckner³

et al. 2014

E&S

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“…Indeed, if the ramets are killed then re covery of denuded areas from external rhizome spreading or propagule settlement may take many years to decades (e.g. Meehan & West 2000, Bryars & Neverauskas 2004.…”

Section: A Possible Mechanism Of Seagrass Lossmentioning

confidence: 99%

Nutrient exposure causes epiphytic changes and coincident declines in two temperate Australian seagrasses

Bryars¹,

Collings²,

Miller³

2011

Mar. Ecol. Prog. Ser.

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We undertook a long-term (27 mo) field experiment to test if a chronic increase in water column nutrients could cause a decline in 2 temperate Australian seagrasses and if this decline could be linked to nutrient-mediated changes in epiphytes. Two seagrasses, Amphibolis antarctica and Posidonia sinuosa, were exposed to minor increases (~2 to 5×) in nutrient (N, P) concentrations utilising slow-release fertiliser over a 15 mo period at a shallow (~2 m depth), oligotrophic marine site in Gulf St Vincent, South Australia. Fertiliser had a significant detrimental effect on biomass, density, and canopy height in both seagrasses. Moreover, the seagrass biomass reductions coincided with increased epiphyte loads and changes in epiphyte composition. After a 12 mo recovery period, epiphyte loads in the fertiliser treatments had returned to levels comparable to the control, but the fertiliser-treated seagrasses had not recovered. While the precise mechanism of seagrass decline is still unclear, our results have demonstrated that (under certain circumstances) chronic, yet minor, increases in water column nutrient concentrations can cause the slow decline of Amphibolis and Posidonia spp. Furthermore, while future management decisions regarding anthropogenic nutrient discharges into seagrass ecosystems should be assessed on a case-by-case basis, our results and those of other workers investigating large-scale losses of Amphibolis and Posidonia in southern Australia indicate that extreme caution must be applied where these seagrasses occur in shallow, sheltered oligo trophic marine environments.

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Natural recolonisation of seagrasses at a disused sewage sludge outfall

Cited by 38 publications

References 4 publications

Unravelling complexity in seagrass systems for management: Australia as a microcosm

Unravelling complexity in seagrass systems for management: Australia as a microcosm

Coping with persistent environmental problems: systemic delays in reducing eutrophication of the Baltic Sea

Nutrient exposure causes epiphytic changes and coincident declines in two temperate Australian seagrasses

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