Energy Transfer Through Food Webs at Hydrothermal Vents: Linking the Lithosphere to the Biosphere

Govenar, Breea

doi:10.5670/oceanog.2012.23

Cited by 53 publications

(49 citation statements)

References 20 publications

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“…Manipulative experiments also revealed that interactions between species, such as facilitation and settlement cues (Mullineaux et al, 2000;Govenar et al, 2004;Govenar and Fisher, 2007), competition (Mullineaux et al, 2003;Lenihan et al, 2008), and predation (Micheli et al, 2002;Sancho et al, 2005), strongly influenced community composition and development (see Govenar, 2012, in this issue). showing that diversity is remarkably similar among geographically separated communities in both mussel beds (Turnipseed et al, 2003) and tubeworm thickets (Govenar et al, 2005).…”

Section: Observers Diving Inmentioning

confidence: 99%

The East Pacific Rise Between 9°N and 10°N: Twenty-Five Years of Integrated, Multidisciplinary Oceanic Spreading Center Studies

Fornari¹,

Damm²,

Bryce³

et al. 2012

oceanog

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, 1976;Francheteau et al., 1979; RISE Project Group, 1980;Francheteau and Ballard, 1983; Hekinian et al., 1983a,b;Lonsdale, 1983;Macdonald and Fox, 1983;Fustec et al., 1987;Fox and Gallo, 1989;Pockalny et al., 1997). One of the seminal findings from the early use of academic multibeam sonars was that the elongate fast-spreading ridge axis was actually divided into discontinuous segments Fox, 1983, 1988;Lonsdale, 1983 e.g., Detrick et al., 1987;Vera et al., 1990;Kent et al., 1993;Harding et al., 1993;Toomey et al., 1994;Wilcock et al., 1995;Barth and Mutter, 1996; Toomey, 1997, 2001;Dunn et al., 2000). Wright et al., 1995;Shank et al., 1998; Fornari et al., 1998a,b;Perfit and Chadwick, 1998;White et al., 2002White et al., , 2006. These studies began to

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Section: Observers Diving Inmentioning

confidence: 99%

The East Pacific Rise Between 9°N and 10°N: Twenty-Five Years of Integrated, Multidisciplinary Oceanic Spreading Center Studies

Fornari¹,

Damm²,

Bryce³

et al. 2012

oceanog

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“…It is commonly suggested that invertebrates hosting symbionts (e.g. siboglinids and bathymodiolin mussels), despite representing a high biomass at vents, do not directly confer nutrition to non-chemosymbiotic species in the general vent food web (Fisher et al 1994;Bergquist et al 2007;De Busserolles et al 2009;Govenar 2012), despite observations in situ (Bright & Lallier 2010) reporting predatory behavior on the plumes of tubeworms. Here, using a mixing model, we demonstrated that some gastropods derive part of their nutrition from both biofilms and 'tissues' of tubeworms (L. elevatus, Lepetodrilus pustulosus, Lepetodrilus ovalis, Cyathermia naticoides, Rhynchopelta concentrica) and mussels (L. elevatus, Eulepetopsis vitrea).…”

Section: Use Of Sources By Primary Consumersmentioning

confidence: 99%

“…; Felbeck ) or within gill epithelial cells in mytilid bivalves (Duperron ). These autotrophic prokaryotes are considered to be at the base of the vent food web (Govenar ). However, an alternative source for primary consumers is particulate organic matter (POM; Limén et al .…”

Section: Introductionmentioning

confidence: 99%

“…Alvinella pompejana or Rimicaris exoculata; Campbell et al 2003;Zbinden et al 2004) or endosymbionts located within organs such as the trophosome in siboglinid polychaetes (Cavanaugh et al 1981;Felbeck 1981) or within gill epithelial cells in mytilid bivalves (Duperron 2010). These autotrophic prokaryotes are considered to be at the base of the vent food web (Govenar 2012). However, an alternative source for primary consumers is particulate organic matter (POM; Lim en et al 2007).…”

Section: Introductionmentioning

confidence: 99%

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How are microbial and detrital sources partitioned among and within gastropods species at East Pacific Rise hydrothermal vents?

et al. 2015

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For the last few decades, trophic ecology has usually been investigated by using stable isotopes. However, the isotopic signatures of potential food sources in hydrothermal vent ecosystems are often unknown and so their relative contribution to the consumers' diet, as well as resource partitioning, are then difficult to estimate. Here, we used a recent Bayesian mixing model (stable isotope analysis in R, SIAR) based on d C and d 15N to estimate the contribution of multiple food sources to the diet of eight vent gastropods that can reach high densities at hydrothermal vents (Lepetodrilus elevatus, Lepetodrilus pustulosus, Lepetodrilus ovalis, Eulepetopsis vitrea, Cyathermia naticoides, Peltospira delicata, Peltospira operculata and Rhynchopelta concentrica). These species, known as primary consumers (mostly bacterivores and detritivores), were sampled on the South-East Pacific Rise at 17°25 0 S and the North-East Pacific Rise at 9°50 0 N and 12°50 0 N. Several potential food sources were sampled according to the gastropod habitat on the chimney wall, or mussel beds (proxies of Gammaproteobacteria form I RubisCO, Gammaproteobacteria form II RubisCO and Epsilonproteobacteria, biofilms of siboglinid and alvinellid tubes, biofilms of mussel shells and particulate organic matter). Some of these microbial and detrital sources were confirmed as present in the gut content of some small specimens by transmission electron microscopy. Distinct stable isotopic signatures of the potential food sources allowed calculation of their relative contributions to primary consumers' diets. This revealed that gastropod species living on siboglinid or bathymodiolin habitats are usually generalists, feeding on various pools of microbial or detrital origins. For a particular habitat, sympatric gastropod species partition the food sources, thus avoiding being in competition. Only for the alvinellid habitat Peltospira spp. appeared to be more specialists as the choice of food sources is more reduced.

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“…The heat and chemicals carried by hydrothermal plumes are important components of the energy and chemical cycles of the global ocean (Bickle and Elderfield, 2004;German and Damm, 2006). Furthermore, the reduced gases carried by hydrothermal plumes fuel chemosynthetic microbes that form the base of lush benthic fauna in vent fields (Govenar, 2012).…”

Section: Introductionmentioning

confidence: 99%

The relative effect of particles and turbulence on acoustic scattering from deep sea hydrothermal vent plumes revisited

Jackson

Bemis

2017

The Journal of the Acoustical Society of America

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The relative importance of suspended particles and turbulence as backscattering mechanisms within a hydrothermal plume located on the Endeavour Segment of the Juan de Fuca Ridge is determined by comparing acoustic backscatter measured by the Cabled Observatory Vent Imaging Sonar (COVIS) with model calculations based on in situ samples of particles suspended within the plume. Analysis of plume samples yields estimates of the mass concentration and size distribution of particles, which are used to quantify their contribution to acoustic backscatter. The result shows negligible effects of plume particles on acoustic backscatter within the initial 10-m rise of the plume. This suggests turbulence-induced temperature fluctuations are the dominant backscattering mechanism within lower levels of the plume. Furthermore, inversion of the observed acoustic backscatter for the standard deviation of temperature within the plume yields a reasonable match with the in situ temperature measurements made by a conductivity-temperature-depth instrument. This finding shows that turbulence-induced temperature fluctuations are the dominant backscattering mechanism and demonstrates the potential of using acoustic backscatter as a remote-sensing tool to measure the temperature variability within a hydrothermal plume.

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Energy Transfer Through Food Webs at Hydrothermal Vents: Linking the Lithosphere to the Biosphere

Cited by 53 publications

References 20 publications

The East Pacific Rise Between 9°N and 10°N: Twenty-Five Years of Integrated, Multidisciplinary Oceanic Spreading Center Studies

The East Pacific Rise Between 9°N and 10°N: Twenty-Five Years of Integrated, Multidisciplinary Oceanic Spreading Center Studies

How are microbial and detrital sources partitioned among and within gastropods species at East Pacific Rise hydrothermal vents?

The relative effect of particles and turbulence on acoustic scattering from deep sea hydrothermal vent plumes revisited

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