The effects of coastal development on sponge abundance, diversity, and community composition on Jamaican coral reefs

Stubler, Amber D.; Duckworth, Alan; Peterson, Bradley J.

doi:10.1016/j.marpolbul.2015.05.014

Cited by 14 publications

(5 citation statements)

References 70 publications

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“…Some sponges exhibit short term responses to high turbidity such as temporarily closing or reducing the size of their incurrent openings (ostia) and arresting pumping (filtering) activity 33 – 36 . However, reduced pumping activity has flow-on consequences for host energetics, health and reproductive output 32 , 37 – 39 . Since some sponges also rely on photoautrotrophy for nutrition, they may be affected by the pronounced reduction in benthic light availability that occurs in dredging plumes 4 , 40 , 41 .…”

Section: Introductionmentioning

confidence: 99%

Effects of suspended sediments on the sponge holobiont with implications for dredging management

Pineda

Strehlow

Sternel

et al. 2017

Sci Rep

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Dredging can cause high suspended sediment concentrations (SSC) in the water column, posing a hazard to filter feeding organisms like sponges as sediment may clog their aquiferous systems and reduce feeding. In order to provide pressure−response values for sponges to SSC and tease apart the cause:effect pathways of dredging pressures, five heterotrophic and phototrophic species were experimentally exposed to a range of dredging-relevant SSC of up to 100 mg L−1, with light compensation across treatments to ensure that SSC was the primary physical parameter. This study shows that some sponge species exposed to high SSC (≥23 mg L−1) for extended periods (28 d) have lower survival, increased necrosis and depletion of energy reserves. In contrast, SSC of ≤10 mg L−1 caused few, if any, negative effects and is thus suggested as a prudent sub-lethal threshold for sponges. Microbial communities did not change significantly among SSC treatments, although a nutritional shift from mixotrophy towards increased phototrophy was detected for some sponge species exposed to high SSC. Importantly however, it is expected that the combined effect of SSC with low light availability and sediment smothering as occurs during dredging operations will increase the negative effects on sponges.

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Section: Introductionmentioning

confidence: 99%

Effects of suspended sediments on the sponge holobiont with implications for dredging management

Pineda

Strehlow

Sternel

et al. 2017

Sci Rep

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“…Due to their nutritional dependence on the products of photosynthesis, phototrophic sponges may be particularly sensitive to turbidity (water cloudiness) and light reduction caused by increased suspended sediments in the water column14151617. One cause of high turbidity is dredging of the sea bed and the subsequent disposal of the sediment at offshore dredge material placement sites18.…”

mentioning

confidence: 99%

Effects of light attenuation on the sponge holobiont- implications for dredging management

Pineda

Strehlow

Duckworth

et al. 2016

Sci Rep

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Dredging and natural sediment resuspension events can cause high levels of turbidity, reducing the amount of light available for photosynthetic benthic biota. To determine how marine sponges respond to light attenuation, five species were experimentally exposed to a range of light treatments. Tolerance thresholds and capacity for recovery varied markedly amongst species. Whilst light attenuation had no effect on the heterotrophic species Stylissa flabelliformis and Ianthella basta, the phototrophic species Cliona orientalis and Carteriospongia foliascens discoloured (bleached) over a 28 day exposure period to very low light (<0.8 mol photons m−2 d−1). In darkness, both species discoloured within a few days, concomitant with reduced fluorescence yields, chlorophyll concentrations and shifts in their associated microbiomes. The phototrophic species Cymbastela coralliophila was less impacted by light reduction. C. orientalis and C. coralliophila exhibited full recovery under normal light conditions, whilst C. foliascens did not recover and showed high levels of mortality. The light treatments used in the study are directly relevant to conditions that can occur in situ during dredging projects, indicating that light attenuation poses a risk to photosynthetic marine sponges. Examining benthic light levels over temporal scales would enable dredging proponents to be aware of conditions that could impact on sponge physiology.

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“…It is well known that sediment movements represent a natural source of disruption for 455 macrobenthic organisms by burying them, in the same way as dredging deposition (Bak and 456 Elgershuizen, 1976;Foster et al, 2010;Jones et al, 2016), or by disrupting their metabolism. 457 Indeed, experimental studies revealed that an increase of suspended sediment concentration in 458 the water column can damage the gills of filter feeders and clog their feeding apparatus 459 (Schönberg, 2016;Webster et al, 2017), and thus influence energy, health and reproductive 460 fitness (Bell et al, 2015;Pineda et al, 2016;Schönberg, 2016;Stubler et al, 2015; Tompkins-The selectivity induced by such environmental constraints is reflected in the trait composition 464 of species within the Dunkirk area. Most organisms are deposit feeders or mobile predator-465 scavengers.…”

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confidence: 99%

Sediment migrations drive the dynamic of macrobenthic ecosystems in subtidal sandy bedforms

Robert

Quillien

Bacha

et al. 2021

Marine Pollution Bulletin

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The effects of coastal development on sponge abundance, diversity, and community composition on Jamaican coral reefs

Cited by 14 publications

References 70 publications

Effects of suspended sediments on the sponge holobiont with implications for dredging management

Effects of suspended sediments on the sponge holobiont with implications for dredging management

Effects of light attenuation on the sponge holobiont- implications for dredging management

Sediment migrations drive the dynamic of macrobenthic ecosystems in subtidal sandy bedforms

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