Spatial and tidal variation in food supply to shallow cold-water coral reefs of the Mingulay Reef complex (Outer Hebrides, Scotland)

Duineveld, G.C.A.; Jeffreys, Rachel M.; Lavaleye, M.S.S.; Davies, Andrew J.; Bergman, M.J.N.; Watmough, Thalia; Witbaard, Rob

doi:10.3354/meps09430

Cited by 71 publications

(80 citation statements)

References 64 publications

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“…Our main focus was to investigate the uptake of food sources across a broad size spectrum, but the implications of these findings for field conditions depend partly on how representative the experimental food sources are for natural conditions. Zooplankton can be an important food item for CWCs Kiriakoulakis et al, 2005;Dodds et al, 2009;Duineveld et al, 2012), but it is logistically challenging to use local and living copepod species in laboratory studies, especially when these need to be enriched with stable isotopes. Therefore, we decided to use laboratoryreared Artemia as substitute for natural zooplankton, like most other feeding studies (Purser et al, 2010;Tsounis et al, 2010;Larsson et al, 2013b).…”

Section: Discussionmentioning

confidence: 99%

“…CWCs are thought to thrive mainly on particulate organic matter (Duineveld et al, 2012). To test for assimilation of different food particle sizes, we chose bacteria to represent picoplankton and microalgae to represent nanoplankton.…”

Section: Preparation Of Particulate Labelled Substratesmentioning

confidence: 99%

“…(Kiriakoulakis et al, 2005;Dodds et al, 2009;Duineveld et al, 2012). However, the processing and production of fatty acids by CWCs has not yet been studied.…”

Section: Introductionmentioning

confidence: 99%

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Opportunistic feeding on various organic food sources by the cold-water coral <i>Lophelia pertusa</i>

et al. 2014

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Abstract. The ability of the cold-water coral Lophelia pertusa to exploit different food sources was investigated under standardized conditions in a flume. The tested food sources, dissolved organic matter (DOM, added as dissolved free amino acids), bacteria, algae, and zooplankton (Artemia) were deliberately enriched in 13 C and 15 N. The incorporation of 13 C and 15 N was traced into bulk tissue, fatty acids, hydrolysable amino acids, and the skeleton ( 13 C only) of L. pertusa. Incorporation rates of carbon (ranging from 0.8-2.4 µg C g −1 DW d −1 ) and nitrogen (0.2-0.8 µg N g −1 DW d −1 ) into coral tissue did not differ significantly among food sources indicating an opportunistic feeding strategy. Although total food assimilation was comparable among sources, subsequent food processing was dependent on the type of food source ingested and recovery of assimilated C in tissue compounds ranged from 17 % (algae) to 35 % (Artemia). De novo synthesis of individual fatty acids by L. pertusa occurred in all treatments as indicated by the 13 C enrichment of individual phospholipid-derived fatty acids (PLFAs) in the coral that were absent in the added food sources. This indicates that the coral might be less dependent on its diet as a source of specific fatty acids than expected, with direct consequences for the interpretation of in situ observations on coral nutrition based on lipid profiles.

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Section: Discussionmentioning

confidence: 99%

Section: Preparation Of Particulate Labelled Substratesmentioning

confidence: 99%

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Opportunistic feeding on various organic food sources by the cold-water coral <i>Lophelia pertusa</i>

et al. 2014

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“…We included the CPI covariate to represent a coarse proxy for the amount of food (organic material) available to benthic organisms over a large temporal scale because the abundance and size of these long-lived corals may reflect climate-driven patterns in their food supply (Smith et al 1994, Ruhl & Smith 2004, Suryan et al 2012. The cold-water coral Lophelia pertusa subsists on phytoplankton delivered from primary productivity near the surface (Duineveld et al 2004(Duineveld et al , 2007(Duineveld et al , 2012, and phytoplankton and detritus may be consumed by antipatharians as well (Wagner et al 2012). The modeled interaction of CPI with depth supports our hypothesis that areas with persistent levels of surface productivity have a more tenuous connection to benthic organisms (e.g.…”

Section: Discussionmentioning

confidence: 99%

Environmental factors that influence the distribution, size, and biotic relationships of the Christmas tree coral Antipathes dendrochristos in the Southern California Bight

Huff¹,

Yoklavich²,

Love³

et al. 2013

Mar. Ecol. Prog. Ser.

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The Christmas tree coral Antipathes dendrochristos is a recently discovered black coral species that represents a habitat associated with numerous sensitive taxa in the Southern California Bight. We evaluated whether broad-scale oceanographic features influence coral density and size by selecting from among generalized additive models (for density) and generalized linear models (for size) that represented competing hypotheses. We constructed models to predict coral density and size using depth, seafloor slope, surface primary productivity, bottom currents, ocean temperature, salinity, and dissolved oxygen as candidate covariates. Specifically, we evaluated hypothesized links between pelagic production and benthic coral utilization and between bottom currents and larval coral dispersal. Our analysis revealed that high surface primary productivity in combination with depth and January currents are important predictors of Christmas tree coral density. Higher coral density coincided with greater chlorophyll persistence and optimal depths near 400 m. Surface productivity increasingly was associated with Christmas tree corals at shallower depths. Our results supported the hypothesis that ocean currents affect coral density via larval dispersal mechanisms. The selected coral size models responded to similar covariates, corroborating coral density results. Fish and invertebrate ordinations indicated that Christmas tree corals were widely distributed across environmental gradients and that Christmas tree corals cooccurred with several demersal fish and invertebrates. Several predicted coral hotspots remain unprotected from fishing, particularly in areas adjacent to highly populated portions of the Southern California Bight. These regions should be targeted by future studies to confirm the presence of Christmas tree coral communities and to evaluate their vulnerability.

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“…Cold-water coral reefs are often associated with elevated seabed features or areas where hydrodynamic conditions assist delivery of large volumes of refractory material, or pulses of labile material to the benthic ecosystem (Duineveld et al, 2004;Kiriakoulakis et al, 2005;Thiem et al, 2006;Kiriakoulakis et al, 2007;Davies et al, 2009;Rüggeberg et al, 2010;Wagner et al, 2011;Duineveld et al, 2012). Sizable reef structures can develop with successive generations of coral polyp growth (Mortensen et al, 1995;De Mol., 2002;Dorschel et al, 2005;Wheeler et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

Microhabitat and shrimp abundance within a Norwegian cold-water coral ecosystem

et al. 2013

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Cold-water coral (CWC) reefs are heterogeneous ecosystems comprising numerous microhabitats. A typical European CWC reef provides various biogenic microhabitats (within, on and surrounding colonies of coral species such as Lophelia pertusa, Paragorgia arborea and Primnoa resedaeformis, or formed by their remains after death). These microhabitats may be surrounded and intermixed with non-biogenic microhabitats (soft sediment, hard ground, gravel/pebbles, steep walls). To date, studies of distribution of sessile fauna across CWC reefs have been more numerous than those investigating mobile fauna distribution. In this study we quantified shrimp densities associated with key CWC microhabitat categories at the Røst Reef, Norway, by analysing image data collected by towed video sled in June 2007. We also investigated shrimp distribution patterns on the local scale (<40 cm) and how these may vary with microhabitat. Shrimp abundances at the Røst Reef were on average an order of magnitude greater in biogenic reef microhabitats than in non-biogenic microhabitats. Greatest shrimp densities were observed in association with live Paragorgia arborea microhabitat (43 shrimp m⁻², SD = 35.5), live Primnoa resedaeformis microhabitat (41.6 shrimp m⁻², SD = 26.1) and live Lophelia pertusa microhabitat (24.4 shrimp m⁻², SD = 18.6). In non-biogenic microhabitat, shrimp densities were <2 shrimp m⁻². CWC reef microhabitats appear to support greater shrimp densities than the surrounding non-biogenic microhabitats at the Røst Reef, at least at the time of survey

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Spatial and tidal variation in food supply to shallow cold-water coral reefs of the Mingulay Reef complex (Outer Hebrides, Scotland)

Cited by 71 publications

References 64 publications

Opportunistic feeding on various organic food sources by the cold-water coral <i>Lophelia pertusa</i>

Opportunistic feeding on various organic food sources by the cold-water coral <i>Lophelia pertusa</i>

Environmental factors that influence the distribution, size, and biotic relationships of the Christmas tree coral Antipathes dendrochristos in the Southern California Bight

Microhabitat and shrimp abundance within a Norwegian cold-water coral ecosystem

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Spatial and tidal variation in food supply to shallow cold-water coral reefs of the Mingulay Reef complex (Outer Hebrides, Scotland)

Cited by 71 publications

References 64 publications

Opportunistic feeding on various organic food sources by the cold-water coral &lt;i&gt;Lophelia pertusa&lt;/i&gt;

Opportunistic feeding on various organic food sources by the cold-water coral &lt;i&gt;Lophelia pertusa&lt;/i&gt;

Environmental factors that influence the distribution, size, and biotic relationships of the Christmas tree coral Antipathes dendrochristos in the Southern California Bight

Microhabitat and shrimp abundance within a Norwegian cold-water coral ecosystem

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Product

Resources

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Opportunistic feeding on various organic food sources by the cold-water coral <i>Lophelia pertusa</i>

Opportunistic feeding on various organic food sources by the cold-water coral <i>Lophelia pertusa</i>