Biogeography of Deep-Sea Benthic Bacteria at Regional Scale (LTER HAUSGARTEN, Fram Strait, Arctic)

Jacob, Marianne; Soltwedel, Thomas; Boetius, Antje; Ramette, Alban

doi:10.1371/journal.pone.0072779

Cited by 75 publications

(62 citation statements)

References 66 publications

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“…Previous research has mainly focused only on the biogeographic patterns of microbial communities in surface sediments, both within ocean basins and globally, and this is discussed in detail in the Supporting Information (Schauer et al, 2010;Zinger et al, 2011;Bienhold et al, 2012;Jacob et al, 2013;Learman et al, 2016). In general, water depth appears to have more explanatory power within a region while geographic distance and carbon bioavailability tends to have more power in global studies (Zinger et al, 2011;Bienhold et al, 2016;Danovaro et al, 2016).…”

Section: Environmental Parameters Structuring Benthic Microbial Distrmentioning

confidence: 99%

The core seafloor microbiome in the Gulf of Mexico is remarkably consistent and shows evidence of recovery from disturbance caused by major oil spills

Overholt

Schwing

Raz

et al. 2019

Environmental Microbiology

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Summary The microbial ecology of oligotrophic deep ocean sediments is understudied relative to their shallow counterparts, and this lack of understanding hampers our ability to predict responses to current and future perturbations. The Gulf of Mexico has experienced two of the largest accidental marine oil spills, the 1979 Ixtoc‐1 blowout and the 2010 Deepwater Horizon (DWH) discharge. Here, microbial communities were characterized for 29 sites across multiple years in > 700 samples. The composition of the seafloor microbiome was broadly consistent across the region and was well approximated by the overlying water depth and depth within the sediment column, while geographic distance played a limited role. Biogeographical distributions were employed to generate predictive models for over 4000 OTU that leverage easy‐to‐obtain geospatial variables which are linked to measured sedimentary oxygen profiles. Depth stratification and putative niche diversification are evidenced by the distribution of taxa that mediate the microbial nitrogen cycle. Furthermore, these results demonstrate that sediments impacted by the DWH spill had returned to near baseline conditions after 2 years. The distributions of benthic microorganisms in the Gulf can be constrained, and moreover, deviations from these predictions may pinpoint impacted sites and aid in future response efforts or long‐term stability studies.

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Section: Environmental Parameters Structuring Benthic Microbial Distrmentioning

confidence: 99%

The core seafloor microbiome in the Gulf of Mexico is remarkably consistent and shows evidence of recovery from disturbance caused by major oil spills

Overholt

Schwing

Raz

et al. 2019

Environmental Microbiology

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“…In addition, this sampling effort was focused on a relatively small ocean region in comparison to similar studies, which provides both greater spatial resolution, while the focus on distinct regions in the Gulf of Mexico allowed for better generalization across the basin. One of the better studied regional ocean basins, with respect to biogeographic patterns in microbial community structure is the Arctic ocean (Bienhold et al, 2012;Jacob et al, 2013). Jacob et al (2013) used spatial variables similar to this study consisting of latitude, longitude, geographic distance, and water depth at the Arctic Long-Term Ecological Research (LTER) site to constrain microbial community variation in 13 surficial sediment samples collected along two transects.…”

Section: Environmental Parameters Structuring Benthic Microbial Distrmentioning

confidence: 99%

“…One of the better studied regional ocean basins, with respect to biogeographic patterns in microbial community structure is the Arctic ocean (Bienhold et al, 2012;Jacob et al, 2013). Jacob et al (2013) used spatial variables similar to this study consisting of latitude, longitude, geographic distance, and water depth at the Arctic Long-Term Ecological Research (LTER) site to constrain microbial community variation in 13 surficial sediment samples collected along two transects. Using redundancy analysis, Jacob et al (2013) found that bacterial community structure significantly varied with water depth and longitude (7% and 3% of the variance, respectively), while geographic distance was not significant.…”

Section: Environmental Parameters Structuring Benthic Microbial Distrmentioning

confidence: 99%

“…Jacob et al (2013) used spatial variables similar to this study consisting of latitude, longitude, geographic distance, and water depth at the Arctic Long-Term Ecological Research (LTER) site to constrain microbial community variation in 13 surficial sediment samples collected along two transects. Using redundancy analysis, Jacob et al (2013) found that bacterial community structure significantly varied with water depth and longitude (7% and 3% of the variance, respectively), while geographic distance was not significant. Somewhat surprisingly, a proxy for phytodetrius input (CPE) explained less variation than water depth, although this was potentially due to the low sampling effort.…”

Section: Environmental Parameters Structuring Benthic Microbial Distrmentioning

confidence: 99%

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Defining the seafloor microbiome of the Gulf of Mexico and its response to oil perturbation

Overholt

Schwing

Hollander

et al. 2018

Preprint

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23The microbial ecology of oligotrophic deep ocean sediments is understudied relative to their 24 shallow counterparts, and this lack of understanding hampers our ability to predict responses to current 25 and future perturbations. The Gulf of Mexico has experienced two of the largest accidental marine oil 26 spills, the 1979 Ixtoc-1 blowout and the 2010 Deepwater Horizon (DWH) discharge. Here, microbial 27 communities were characterized for 29 sites across multiple years in >700 samples. The composition of 28 the seafloor microbiome was broadly consistent across the region and was well approximated by the 29 overlying water depth and depth within the sediment column, while geographic distance played a 30 limited role. Biogeographical distributions were employed to generate predictive models for over 4000 31OTU that leverage easy-to-obtain geospatial variables which are linked to measured sedimentary oxygen 32 profiles. Depth stratification and putative niche diversification are evidenced by the distribution of taxa 33 that mediate the microbial nitrogen cycle. Further, these results demonstrate that sediments impacted 34 by the DWH spill had returned to near baseline conditions after two years. The distributions of benthic 35 microorganisms in the Gulf can be constrained, and moreover deviations from these predictions may 36 pinpoint impacted sites and aid in future response efforts or long-term stability studies. 37 of Mexico biogeography model of microbial community structure that can predict the abundance of 86 dominant microbial populations, and (4) determine if impacted regions had returned to baseline 87 conditions. We determine the environmental parameters structuring microbial communities, including 88

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“…Diferentes profundidades do sedimento possuem diferentes condições ambientais e consequentemente a composição das comunidades microbianas muda com o aumento da profundidade no sedimento (JACOB et al, 2013;MEYER et al, 2013). Nesse trabalho foram analisadas apenas duas camadas de profundidade no sedimento (0-1cm e 1-4cm), em pequenas distâncias as espécies de micro-organismos conseguem dispersar ativamente entre os grãos do sedimento através da divisão celular, crescimento das populações e motilidade entre as partículas do sedimento, o que pode explicar a não influência da distância na estruturação das comunidades (LONG; AZAM, 2001).…”

Section: Distribuição Espacial Das Comunidades De Micro-organismos Nounclassified

Padrões de diversidade microbiana em sedimentos marinhos profundos influenciados por uma exsudação de asfalto.

Queiroz¹

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AGRADECIMENTOSAgradeço primeiramente a um conjunto de eventos aleatórios, desde a origem do universo, passando pela formação da nossa galáxia, a origem da vida na Terra até o meu nascimento.Sem eles não teria sido possível o desenvolvimento desse e de futuros trabalhos.À minha orientadora, Dra. Vivian Helena Pellizari pela oportunidade de desenvolver meu trabalho em um ambiente tão instigante como o fundo do mar, além do apoio e orientação no decorrer do desenvolvimento deste trabalho. Sem dúvida contribuiu muito para formação como cientista e pessoa.Ao Dr. Artur Silva pelo apoio no desenvolvimento do trabalho e por me receber em seu laboratório em Belém -PA.Ao Dr. Rubens Tadeu Delgado Duarte pela orientação não oficial, por ouvir minhas reclamações e desabafos pacientemente e sempre me dar bons conselhos em momentos difíceis desse período. À Msc. Rosa de Carvalho Gamba, A Manager do LECOM, pela amizade, puxões de orelha quando necessário e por administrar de forma magistral as finanças do laboratório.À todos os colegas de laboratório, Adriana Torres, Amanda Bendia, Ana Carolina, André Rosh, Diego Castillo, Fabiana Paula, Francielli Peres, Felipe Nóbrega, Luana Agostini, Marina Bruza, Natascha Bergo, Thiago Molina e Victor Vital pela ajuda me ensinando alguma técnica, teoria, conceito ou simplesmente desabafando os problemas de cada um.Ao grande amigo Bruno Spacek, sua esposa Sara Lodi e sua filha Gabriela por me receberem tão bem durante um mês em sua casa em Belém-PA. As classes bacterianas mais abundantes foram Alphaproteobacteria (30%), Acidimicrobiia (18%), Gammaproteobacteria (16%), Deltaproteobacteria e Gemmatimonadetes (3%). A composição das comunidades influenciadas pela exsudação de asfalto não teve relação com a presença do óleo ou com as camadas de profundidade. A distância geográfica e a exsudação de asfalto foram importantes fatores para determinação da distribuição geográfica das comunidades microbianas em sedimento marinhos profundos do Platô de São Paulo. Apesar da ausência de relação entre o óleo proveniente da exsudação de asfalto e a composição das comunidades, a alta abundância de Alphaproteobacteria e a importância da distância dentro da região norte são indicativos do aumento da heterogeneidade causado pela exsudação de asfalto. Mais estudos procurando compreender a composição geoquímica dos sedimentos e do óleo são necessários para explicar como esses fatores influenciam a estruturação das comunidades microbianas estudadas. Deep-sea sediments are stable and homogeneous environments, however, they have a high variety of available habitats, allowing a high microbial diversity to occur. Microbial spatial distribution is determined by local and regional factors. Local factors are associated to environment structure and regional factors, to microbial dispersal limitation and historical events that may cause environmental changes. Historical events such as hydrocarbon emanation from sub-seafloor to seafloor may change the patterns of microbial spatial distribution, due to an increase of carbon,...

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Biogeography of Deep-Sea Benthic Bacteria at Regional Scale (LTER HAUSGARTEN, Fram Strait, Arctic)

Cited by 75 publications

References 66 publications

The core seafloor microbiome in the Gulf of Mexico is remarkably consistent and shows evidence of recovery from disturbance caused by major oil spills

The core seafloor microbiome in the Gulf of Mexico is remarkably consistent and shows evidence of recovery from disturbance caused by major oil spills

Defining the seafloor microbiome of the Gulf of Mexico and its response to oil perturbation

Padrões de diversidade microbiana em sedimentos marinhos profundos influenciados por uma exsudação de asfalto.

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