Enigmatic persistence of dissolved organic matter in the ocean

Nature Reviews Earth & Environment, Год журнала: 2021, Номер 2(8), С. 570 - 583

Опубликована: Июнь 30, 2021

Язык: Английский

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40 Years of benthic community change on the Caribbean reefs of Curaçao and Bonaire: the rise of slimy cyanobacterial mats

Coral Reefs, Год журнала: 2017, Номер 36(2), С. 355 - 367

Опубликована: Янв. 5, 2017

Язык: Английский

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Phylogenetic signal in the community structure of host-specific microbiomes of tropical marine sponges

Frontiers in Microbiology, Год журнала: 2014, Номер 5

Опубликована: Окт. 17, 2014

Sponges (Porifera) can host diverse and abundant communities of microbial symbionts that make crucial contributions to metabolism. Although these are often host-specific hypothesized co-evolve with their hosts, correlations between phylogeny microbiome community structure rarely tested. As part the Earth Microbiome Project, we surveyed microbiomes associated 20 species tropical marine sponges collected over a narrow geographic range. We tested whether (1) univariate metrics diversity displayed significant phylogenetic signal across phylogeny; (2) identity were factors in multivariate analyses taxonomic dissimilarity; (3) different minimum read thresholds impacted results. observed differences among for all thresholds, strong inverse Simpson's index (D). surprisingly wide range variability dissimilarity within (4% 73%); this was not related abundance species. Taxonomic significantly by when considered individually; together, effect reduced, but remained significant. In our dataset, outcome is largely due closely harboring distinct taxa. specific taxa varied substantially sponges, hosts tended harbor similar patterns relative abundance. hypothesize low D might be structured regulation or presence competitively dominant themselves under selection specificity.

Язык: Английский

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Chemical defenses and resource trade-offs structure sponge communities on Caribbean coral reefs

Proceedings of the National Academy of Sciences, Год журнала: 2014, Номер 111(11), С. 4151 - 4156

Опубликована: Фев. 24, 2014

Significance Chemical defenses are known to protect some species from consumers, but it is often difficult detect this advantage at the community or ecosystem levels because of complexity abiotic and biotic factors that influence abundances. We surveyed sponges sponge predators (angelfishes parrotfishes) on coral reefs across Caribbean ranging heavily overfished sites protected marine reserves. High predator abundance correlated with high chemically defended species, few were dominated by undefended which grow reproduce faster than species. Overfishing may enhance competition between palatable reef-building stony corals, further impeding recovery reefs.

Язык: Английский

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Reviews and syntheses: to the bottom of carbon processing at the seafloor

Biogeosciences, Год журнала: 2018, Номер 15(2), С. 413 - 427

Опубликована: Янв. 19, 2018

Abstract. Organic carbon processing at the seafloor is studied by biogeochemists to quantify burial and respiration, organic geochemists elucidate compositional changes ecologists follow transfers within food webs. Here I review these disciplinary approaches discuss where they agree disagree. It will be shown that biogeochemical approach (ignoring identity of organisms) ecological (focussing on growth biomass are consistent longer timescales. Secondary production microbes animals identified potentially impact composition sedimentary matter. Animals sediment in multiple ways: governing supply sediments, aeration via bio-irrigation mixing labile matter deeper layers. present an inverted microbial loop which profit from bioturbation rather than profiting otherwise lost dissolved resources. Sediments devoid fauna therefore function differently less efficient with consequence more buried transferred Vernadsky's biosphere geosphere.

Язык: Английский

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