Particle flux and food supply to a seamount cold-water coral community (Galicia Bank, NW Spain)

Duineveld, G.C.A.; Lavaleye, M.S.S.; Berghuis, E.M.

doi:10.3354/meps277013

Cited by 215 publications

(195 citation statements)

References 29 publications

Supporting

Mentioning

169

Contrasting

Order By: Relevance

“…The moorings were held upright by 6 Benthos floats, with the current meter and logger positioned 2.5-3.5 m above the seafloor (Table 1). The moorings were supplemented by deployments of the autonomous lander for biological experiments (Duineveld et al 2004). The lander consisted of an aluminum tripod frame equipped with 12 glass Benthos floats, two acoustic releases, and a single 250-kg ballast weight.…”

Section: Methodsmentioning

confidence: 99%

“…Cold-water corals were thought to be sustained by local hydrocarbon seepage and chemoautotrophic production (Hovland and Thomsen 1997). Data obtained so far indicate that cold-water coral communities rely on the delivery of phytoplankton, organic matter, and perhaps zooplankton derived from near-surface primary productivity (Duineveld et al 2004(Duineveld et al , 2007Kiriakoulakis et al 2005). Lateral and vertical advection of particles may therefore play an important role in the functioning of coral ecosystems.…”

mentioning

confidence: 99%

See 1 more Smart Citation

Downwelling and deep‐water bottom currents as food supply mechanisms to the cold‐water coral Lophelia pertusa (Scleractinia) at the Mingulay Reef Complex

Davies

Duineveld

Lavaleye

et al. 2009

Limnology & Oceanography

251

268

View full text Add to dashboard Cite

In 2006 and 2007, multiple deployments of current meters and optical sensors on landers and moorings were made in the first detailed in situ study of the particle supply to the coral community in the Mingulay Reef complex in the Sea of Hebrides at 140-m water depth. Two distinct and predictable supply mechanisms were resolved. One mechanism consisted of the rapid downwelling of surface water caused by hydraulic control of tidal flow that transports particles from the surface to the corals in less than an hour. The rapid downwelling was recorded on the reef top as a pulse of warm, fluorescent, and relatively clear water at the onset of the flood and ebb tides. The pulse was strongest after flood tide and lasted for up to 3 h. The second mechanism consisted of advection onto the reef of deep bottom water with a high suspended matter load. This advection occurred during peak tides and was combined with topographical current acceleration on the reef top, enhancing delivery of particles to the corals.

show abstract

Section: Methodsmentioning

confidence: 99%

mentioning

confidence: 99%

Downwelling and deep‐water bottom currents as food supply mechanisms to the cold‐water coral Lophelia pertusa (Scleractinia) at the Mingulay Reef Complex

Davies

Duineveld

Lavaleye

et al. 2009

Limnology & Oceanography

251

268

View full text Add to dashboard Cite

show abstract

“…There is now evidence for several carbonate mound provinces in the north east Atlantic from (1) south west Ireland: the Hovland (Hovland et al 1994;De Mol et al 2002), Magellan and Belgica provinces (De Mol et al 2002;Van Rooij et al 2003), (2) southern Rockall Bank: Logachev Mounds van Weering et al 2003), (3) western Rockall Bank (Wienberg et al 2008) and (4) generations of coral reef development that leads to coral-built carbonate mounds (Roberts et al 2006). Studies of the stable isotopic composition of coral skeleton and tissue have not supported a seep-based food chain (Duineveld et al 2004) and analyses of lipid biomarkers and stable nitrogen isotopes of Lophelia pertusa and Madrepora oculata point to a diet derived from primary productivity at the surface (Kiriakoulakis et al 2005). Thus to date evidence for a relationship between coral growth and light hydrocarbon seepage has not been found and the mounds are thought to develop through periods of interglacial coral framework growth interspersed with periods of glacial sedimentation over timescales of 1 to 2 million years (Roberts et al 2006;Kano et al 2007).…”

Section: Geological Contextmentioning

confidence: 99%

Cold-water coral reef frameworks, megafaunal communities and evidence for coral carbonate mounds on the Hatton Bank, north east Atlantic

Roberts

Henry

Long

et al. 2008

Facies

View full text Add to dashboard Cite

Offshore banks and seamounts sustain diverse megafaunal communities including framework reefs formed by cold-water corals. Few studies have quantified environmental effects on the alpha or beta diversity of these communities. We adopted an interdisciplinary approach that used historical geophysical data to identify topographic highs on Hatton Bank, which were surveyed visually. The resulting photographic data were used to examine relationships between megafaunal communities and macrohabitat, the latter defined into six categories (mud, sand, cobbles, coral rubble, coral framework, rock). The survey stations revealed considerable small-scale variability in macrohabitat from exposed Late Palaeocene lava flows to quiescent muddy habitats and coral-built carbonate mounds. The first reported evidence for coral carbonate mound development in UK waters is presented, which was most pronounced near present day or former sites of topographic change suggesting that local current acceleration favoured coral framework growth and mound initiation.Alpha diversity varied significantly across macrohabitats, but not between rock and coral rubble, or between smaller-grain sized categories of cobbles, sand and mud. Community composition differed between most macrohabitats, and variation in beta diversity across Hatton Bank was largely explained by fine-scale substratum. Certain megafauna were clearly associated with particular macrohabitats, with stylasterid corals notably associated with cobble and rock habitats and coral habitats characterised by a diverse community of suspension-feeders. The visual surveys also produced novel images of deep-water megafauna including a new photographic record of the gorgonian coral Paragorgia arborea, a species not previously reported from Rockall Plateau.Further interdisciplinary studies are needed to interpret beta diversity across these and other environmental gradients on Hatton Bank. It is clear that efforts are also needed to improve our understanding of the genetic connectivity and biogeography of vulnerable deep-water ecosystems and to develop predictive models of their occurrence that can help inform future conservation measures.

show abstract

“…For most seafloor communities living below the photic zone (∼200 m), surface-derived primary production represents their main food source (Dayton and Oliver, 1977;Duineveld et al, 2004;Ruhl et al, 2014), and is therefore critical for their survival. Seafloor communities represent the richest component of Antarctic biodiversity (Griffiths, 2010), are highly endemic (Griffiths et al, 2009), and play an important role in the marine ecosystem (Thurber et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Mapping Antarctic Suspension Feeder Abundances and Seafloor Food-Availability, and Modeling Their Change After a Major Glacier Calving

et al. 2018

View full text Add to dashboard Cite

Seafloor communities are a critical part of the unique and diverse Antarctic marine life. Processes at the ocean-surface can strongly influence the diversity and abundance of these communities, even when they live at hundreds of meters water depth. However, even though we understand the importance of this link, there are so far no quantitative spatial predictions on how seafloor communities will respond to changing conditions at the ocean surface. Here, we map patterns in abundance of important habitat-forming suspension feeders on the seafloor in East Antarctica, and predict how these patterns change after a major disturbance in the icescape, caused by the calving of the Mertz Glacier Tongue. We use a purpose-built ocean model for the time-period before and after the calving of the Mertz-Glacier Tongue in 2010, data from satellites and a validated food-availability model to estimate changes in horizontal flux of food since the glacier calving. We then predict the post-calving distribution of suspension feeder abundances using the established relationships with the environmental variables, and changes in horizontal flux of food. Our resulting maps indicate strong increases in suspension feeder abundances close to the glacier calving site, fueled by increased food supply, while the remainder of the region maintains similar suspension feeder abundances despite a slight decrease in total food supply. The oceanographic setting of the entire region changes, with a shorter ice-free season, altered seafloor currents and changes in food-availability. Our study provides important insight into the flow-on effects of a changing icescape on seafloor habitat and fauna in polar environments. Understanding these connections is important in the context of current and future effects of climate change, and the mapped predictions of the seafloor fauna as presented for the study region can be used as a decision-tool for planning potential marine protected areas, and for focusing future sampling and monitoring initiatives.

show abstract

Particle flux and food supply to a seamount cold-water coral community (Galicia Bank, NW Spain)

Cited by 215 publications

References 29 publications

Downwelling and deep‐water bottom currents as food supply mechanisms to the cold‐water coral Lophelia pertusa (Scleractinia) at the Mingulay Reef Complex

Downwelling and deep‐water bottom currents as food supply mechanisms to the cold‐water coral Lophelia pertusa (Scleractinia) at the Mingulay Reef Complex

Cold-water coral reef frameworks, megafaunal communities and evidence for coral carbonate mounds on the Hatton Bank, north east Atlantic

Mapping Antarctic Suspension Feeder Abundances and Seafloor Food-Availability, and Modeling Their Change After a Major Glacier Calving

Contact Info

Product

Resources

About