Elucidating trophic pathways in benthic deep-sea assemblages of the Mid-Atlantic Ridge north and south of the Charlie-Gibbs Fracture Zone

Reid, William D.; Wigham, Benjamin D.; McGill, Rona A. R.; Polunin, Nicholas V. C.

doi:10.3354/meps09863

Cited by 38 publications

(17 citation statements)

References 75 publications

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“…In Kaik oura Canyon, we observed a positive correlation between the δ 13 C and δ 15 N values of the burrowing urchin B. oldhami and of the holothurian M. musculus, which suggests that variation in trophic level (and not carbon source) is the cause of the variability among samples and sampling sites in this canyon. This kind of relationship has been observed in several other studies of deep-sea communities, and is indicative of common primary source material (Polunin et al 2001;Reid et al 2012). These correlations result from the increase in both δ 15 N and δ 13 C values (1.4-3.4‰ and 0.5-1.0‰, respectively) with each trophic level (De Niro and Epstein 1978;McCutchan et al 2003).…”

Section: Stable Isotopessupporting

confidence: 78%

Structure of infaunal communities in New Zealand submarine canyons is linked to origins of sediment organic matter

Leduc

Nodder

Rowden

et al. 2020

Limnology & Oceanography

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Submarine canyons can facilitate the transfer of land-derived organic matter to the deep sea. Here, we investigated links between variability in organic matter availability from land and marine sources and infauna communities in two contrasting canyon systems off New Zealand and used stable isotope analyses to identify potential food sources of benthic invertebrates. Kaik oura Canyon, a steep, short canyon close to the shore, was characterized by high food availability and varying proportions of marine-and land-derived organic matter, whereas Hokitika Canyon, a narrow and lower-gradient canyon that extends further from the coast, was characterized by low food availability and mostly land-derived sediment organic matter throughout. Both macrofaunal and meiofaunal abundance and biomass were greater in Kaik oura Canyon than in Hokitika Canyon. Correlation analyses suggested that land-derived organic matter may contribute to increased meiofaunal abundance in Kaik oura Canyon. Carbon and nitrogen isotopic analyses, however, did not provide unequivocal support for the uptake of land-derived material by large benthic invertebrates in Kaik oura Canyon. Infaunal abundance and biomass were low throughout Hokitika Canyon despite similar concentrations of land-derived organic matter in sediments of both canyons, which suggests that variations in marine-derived organic matter inputs is the main driver of community differences among canyons. Refractory vascular plant material by itself may not provide an adequate food supply to infaunal organisms, but may represent a complementary food resource when more labile marine phytodetritus is also readily available.

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Section: Stable Isotopessupporting

confidence: 78%

Structure of infaunal communities in New Zealand submarine canyons is linked to origins of sediment organic matter

Leduc

Nodder

Rowden

et al. 2020

Limnology & Oceanography

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“…The taxa considered in this study are an important component of demersal fish diet (Bergstad et al, 2010;Mauchline and Gordon, 2006), perhaps more so than diurnally migrating zooplankton, even on seamounts (Hirch and Christiansen, 2010). Elevated abundances of decapod shrimps and lophogastrids in the vicinity of seamounts may provide an important prey item, linking between pelagic and/or benthic ecosystems and the demersal/pelagic fish fauna (see Letessier et al, 2012;Reid et al, 2012). Ubiquitous mesopelagic crustaceans with a benthic component to their diet (such as S. debilis, and maybe some gnathophausiids) may hold a more important trophic position in seamount food webs than previously assumed, by making benthic energy sources available to higher and pelagic trophic levels, thus enforcing benthopelagic connectivity.…”

Section: Resultsmentioning

confidence: 94%

Seamount influences on mid-water shrimps (Decapoda) and gnathophausiids (Lophogastridea) of the South-West Indian Ridge

Letessier

Grave

Boersch‐Supan

et al. 2017

Deep Sea Research Part II: Topical Studies in Oceanography

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“…Similar results are reported in Drazen et al (2008c) for macrourid fish species from the eastern North Pacific. Conversely, although Reid et al (2013) detected size-related trends in the δ 13 C of deep-water fish collected from the Mid-Atlantic Ridge at 2400-2750 m depth, the authors were not able to distinguish whether these results were due to ontogenetic changes in diet or merely to an effect of increasing size, within the size range sampled. Moreover, δ 15 N and trophic position may increase with body size in adult shallow-water fish, as larger predatory fish ingest larger, more isotopically enriched prey (Badalamenti et al, 2002;Galván et al, 2010).…”

Section: Biological Sourcesmentioning

confidence: 84%

Reviews and syntheses: Insights into deep-sea food webs and global environmental gradients revealed by stable isotope (δ15N, δ13C) and fatty acid trophic biomarkers

Parzanini

Parrish

Hamel³

et al. 2019

Biogeosciences

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Abstract. Biochemical markers developed initially for food-web studies of terrestrial and shallow-water environments have only recently been applied to deep-sea ecosystems (i.e., in the early 2000s). For the first time since their implementation, this review took a close look at the existing literature in the field of deep-sea trophic ecology to synthesize current knowledge. Furthermore, it provided an opportunity for a preliminary analysis of global geographic (i.e., latitudinal, along a depth gradient) trends in the isotopic (δ15N, δ13C) and fatty acid composition of deep-sea macro- and megafauna from heterotrophic systems. Results revealed significant relationships along the latitudinal and bathymetric gradients. Deep-sea animals sampled at temperate and polar latitudes displayed lower isotopic ratios and greater proportions of essential ω3 long-chain polyunsaturated fatty acids (LC-PUFAs) than did tropical counterparts. Furthermore, δ15N and δ13C ratios as well as proportions of arachidonic acid increased with increasing depth. Since similar latitudinal trends in the isotopic and fatty acid composition were found in surface water phytoplankton and particulate organic matter, these results highlight the link across latitudes between surface primary production and deep-water communities. Because global climate change may affect quantity and quality (e.g., levels of essential ω3 PUFAs) of surface primary productivity, and by extension those of its downward flux, the dietary intake of deep-sea organisms may likely be altered. In addition, because essential ω3 PUFAs play a major role in the response to temperature variations, climate change may interfere with the ability of deep-sea species to cope with potential temperature shifts. Importantly, methodological disparities were highlighted that prevented in-depth analyses, indicating that further studies should be conducted using standardized methods in order to generate more reliable global predictions.

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Elucidating trophic pathways in benthic deep-sea assemblages of the Mid-Atlantic Ridge north and south of the Charlie-Gibbs Fracture Zone

Cited by 38 publications

References 75 publications

Structure of infaunal communities in New Zealand submarine canyons is linked to origins of sediment organic matter

Structure of infaunal communities in New Zealand submarine canyons is linked to origins of sediment organic matter

Seamount influences on mid-water shrimps (Decapoda) and gnathophausiids (Lophogastridea) of the South-West Indian Ridge

Reviews and syntheses: Insights into deep-sea food webs and global environmental gradients revealed by stable isotope (<i>δ</i><sup>15</sup>N, <i>δ</i><sup>13</sup>C) and fatty acid trophic biomarkers

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Elucidating trophic pathways in benthic deep-sea assemblages of the Mid-Atlantic Ridge north and south of the Charlie-Gibbs Fracture Zone

Cited by 38 publications

References 75 publications

Structure of infaunal communities in New Zealand submarine canyons is linked to origins of sediment organic matter

Structure of infaunal communities in New Zealand submarine canyons is linked to origins of sediment organic matter

Seamount influences on mid-water shrimps (Decapoda) and gnathophausiids (Lophogastridea) of the South-West Indian Ridge

Reviews and syntheses: Insights into deep-sea food webs and global environmental gradients revealed by stable isotope (&lt;i&gt;δ&lt;/i&gt;&lt;sup&gt;15&lt;/sup&gt;N, &lt;i&gt;δ&lt;/i&gt;&lt;sup&gt;13&lt;/sup&gt;C) and fatty acid trophic biomarkers

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About

Reviews and syntheses: Insights into deep-sea food webs and global environmental gradients revealed by stable isotope (<i>δ</i><sup>15</sup>N, <i>δ</i><sup>13</sup>C) and fatty acid trophic biomarkers