Untitled

Gooday, Andrew J.

doi:10.1023/a:1015865826379

Cited by 246 publications

(30 citation statements)

References 193 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This is in agreement with previous studies reporting higher meiofaunal abundances in the canyon axis in spring than in autumn (Romano et al, 2013). In general, meiofaunal biomass is related to food inputs provided by pulses of settling organic matter, to which benthic communities respond with some time lag (Gooday, 2002). In the Northwestern Mediterranean Sea, there are strong seasonal signatures in the input of particles to the sediment bottoms (Guidi-Guilvard et al, 2009), with marked peaks in winter and spring.…”

Section: Discussionmentioning

confidence: 99%

Spatio-temporal monitoring of deep-sea communities using metabarcoding of sediment DNA and RNA

Guardiola

Wangensteen

Taberlet

et al. 2016

PeerJ

104

View full text Add to dashboard Cite

We assessed spatio-temporal patterns of diversity in deep-sea sediment communities using metabarcoding. We chose a recently developed eukaryotic marker based on the v7 region of the 18S rRNA gene. Our study was performed in a submarine canyon and its adjacent slope in the Northwestern Mediterranean Sea, sampled along a depth gradient at two different seasons. We found a total of 5,569 molecular operational taxonomic units (MOTUs), dominated by Metazoa, Alveolata and Rhizaria. Among metazoans, Nematoda, Arthropoda and Annelida were the most diverse. We found a marked heterogeneity at all scales, with important differences between layers of sediment and significant changes in community composition with zone (canyon vs slope), depth, and season. We compared the information obtained from metabarcoding DNA and RNA and found more total MOTUs and more MOTUs per sample with DNA (ca. 20% and 40% increase, respectively). Both datasets showed overall similar spatial trends, but most groups had higher MOTU richness with the DNA template, while others, such as nematodes, were more diverse in the RNA dataset. We provide metabarcoding protocols and guidelines for biomonitoring of these key communities in order to generate information applicable to management efforts.

show abstract

Section: Discussionmentioning

confidence: 99%

Spatio-temporal monitoring of deep-sea communities using metabarcoding of sediment DNA and RNA

Guardiola

Wangensteen

Taberlet

et al. 2016

PeerJ

104

View full text Add to dashboard Cite

show abstract

“…-Assessment of the effects of productivity patterns on biogeography, in the contemporary ocean as well as over geological timescales. Carbon flux shapes patterns in biodiversity and the evolution of deep-sea faunas (Gooday 2002;Smith et al 2008;McClain et al 2009b) and will probably prove important in deep-sea biogeography. -Reproductive patterns and estimates of larval dispersal ability in deep-sea fauna, which are largely lacking for groups other than echinoderms and vent species (e.g.…”

Section: Discussionmentioning

confidence: 99%

“…Even the expansive mud bottom-the backdrop for this variation-experiences episodic storms and currents, patchy organic input and disturbance regimes linked to surface ocean processes (e.g. Tyler 1988;Gooday 2002).…”

Section: Introductionmentioning

confidence: 99%

The dynamics of biogeographic ranges in the deep sea

2010

View full text Add to dashboard Cite

Anthropogenic disturbances such as fishing, mining, oil drilling, bioprospecting, warming, and acidification in the deep sea are increasing, yet generalities about deep-sea biogeography remain elusive. Owing to the lack of perceived environmental variability and geographical barriers, ranges of deep-sea species were traditionally assumed to be exceedingly large. In contrast, seamount and chemosynthetic habitats with reported high endemicity challenge the broad applicability of a single biogeographic paradigm for the deep sea. New research benefiting from higher resolution sampling, molecular methods and public databases can now more rigorously examine dispersal distances and species ranges on the vast ocean floor. Here, we explore the major outstanding questions in deep-sea biogeography. Based on current evidence, many taxa appear broadly distributed across the deep sea, a pattern replicated in both the abyssal plains and specialized environments such as hydrothermal vents. Cold waters may slow larval metabolism and development augmenting the great intrinsic ability for dispersal among many deep-sea species. Currents, environmental shifts, and topography can prove to be dispersal barriers but are often semipermeable. Evidence of historical events such as points of faunal origin and climatic fluctuations are also evident in contemporary biogeographic ranges. Continued synthetic analysis, database construction, theoretical advancement and field sampling will be required to further refine hypotheses regarding deep-sea biogeography.

show abstract

“…Coastal and deep-sea environments typically receive seasonal pulses of organic matter after phytoplankton bloom events (Gooday, 2002; Kim et al, 2009). During such blooms of diatoms (Riemann et al, 2000) and dinoflagellates (Fandino et al, 2001), the population of Bacteroidetes increased significantly in a short time scale, concomitant with increasing activity of extracellular hydrolytic enzymes.…”

Section: The Phylum Bacteroidetesmentioning

confidence: 99%

Environmental and Gut Bacteroidetes: The Food Connection

Thomas¹,

Hehemann²,

Rebuffet³

et al. 2011

Front. Microbio.

983

645

View full text Add to dashboard Cite

Members of the diverse bacterial phylum Bacteroidetes have colonized virtually all types of habitats on Earth. They are among the major members of the microbiota of animals, especially in the gastrointestinal tract, can act as pathogens and are frequently found in soils, oceans and freshwater. In these contrasting ecological niches, Bacteroidetes are increasingly regarded as specialists for the degradation of high molecular weight organic matter, i.e., proteins and carbohydrates. This review presents the current knowledge on the role and mechanisms of polysaccharide degradation by Bacteroidetes in their respective habitats. The recent sequencing of Bacteroidetes genomes confirms the presence of numerous carbohydrate-active enzymes covering a large spectrum of substrates from plant, algal, and animal origin. Comparative genomics reveal specific Polysaccharide Utilization Loci shared between distantly related members of the phylum, either in environmental or gut-associated species. Moreover, Bacteroidetes genomes appear to be highly plastic and frequently reorganized through genetic rearrangements, gene duplications and lateral gene transfers (LGT), a feature that could have driven their adaptation to distinct ecological niches. Evidence is accumulating that the nature of the diet shapes the composition of the intestinal microbiota. We address the potential links between gut and environmental bacteria through food consumption. LGT can provide gut bacteria with original sets of utensils to degrade otherwise refractory substrates found in the diet. A more complete understanding of the genetic gateways between food-associated environmental species and intestinal microbial communities sheds new light on the origin and evolution of Bacteroidetes as animals’ symbionts. It also raises the question as to how the consumption of increasingly hygienic and processed food deprives our microbiota from useful environmental genes and possibly affects our health.

show abstract

Untitled

Cited by 246 publications

References 193 publications

Spatio-temporal monitoring of deep-sea communities using metabarcoding of sediment DNA and RNA

Spatio-temporal monitoring of deep-sea communities using metabarcoding of sediment DNA and RNA

The dynamics of biogeographic ranges in the deep sea

Environmental and Gut Bacteroidetes: The Food Connection

Contact Info

Product

Resources

About