Ediacara biota flourished in oligotrophic and bacterially dominated marine environments across Baltica

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Ediacara biota flourished in oligotrophic and bacterially dominated marine environments across Baltica. / Pehr, Kelden; Love, Gordon D.; Kuznetsov, Anton; Podkovyrov, Victor; Junium, Christopher K.; Shumlyanskyy, Leonid; Sokur, Tetyana; Bekker, Andrey.

In: Nature Communications, Vol. 9, No. 1, 1807, 01.12.2018.

Research output: Contribution to journal › Article › peer-review

Author

Pehr, Kelden ; Love, Gordon D. ; Kuznetsov, Anton ; Podkovyrov, Victor ; Junium, Christopher K. ; Shumlyanskyy, Leonid ; Sokur, Tetyana ; Bekker, Andrey. / Ediacara biota flourished in oligotrophic and bacterially dominated marine environments across Baltica. In: Nature Communications. 2018 ; Vol. 9, No. 1.

BibTeX

@article{e153c7e64ff54b7eb4b2bedae8492b46,

title = "Ediacara biota flourished in oligotrophic and bacterially dominated marine environments across Baltica",

abstract = "Middle-to-late Ediacaran (575-541 Ma) marine sedimentary rocks record the first appearance of macroscopic, multicellular body fossils, yet little is known about the environments and food sources that sustained this enigmatic fauna. Here, we perform a lipid biomarker and stable isotope (δ15Ntotal and δ13CTOC) investigation of exceptionally immature late Ediacaran strata (<560 Ma) from multiple locations across Baltica. Our results show that the biomarker assemblages encompass an exceptionally wide range of hopane/sterane ratios (1.6-119), which is a broad measure of bacterial/eukaryotic source organism inputs. These include some unusually high hopane/sterane ratios (22-119), particularly during the peak in diversity and abundance of the Ediacara biota. A high contribution of bacteria to the overall low productivity may have bolstered a microbial loop, locally sustaining dissolved organic matter as an important organic nutrient. These oligotrophic, shallow-marine conditions extended over hundreds of kilometers across Baltica and persisted for more than 10 million years.",

author = "Kelden Pehr and Love, {Gordon D.} and Anton Kuznetsov and Victor Podkovyrov and Junium, {Christopher K.} and Leonid Shumlyanskyy and Tetyana Sokur and Andrey Bekker",

year = "2018",

month = dec,

day = "1",

doi = "10.1038/s41467-018-04195-8",

language = "English",

volume = "9",

journal = "Nature Communications",

issn = "2041-1723",

publisher = "Nature Publishing Group",

number = "1",

}

RIS

TY - JOUR

T1 - Ediacara biota flourished in oligotrophic and bacterially dominated marine environments across Baltica

AU - Pehr, Kelden

AU - Love, Gordon D.

AU - Kuznetsov, Anton

AU - Podkovyrov, Victor

AU - Junium, Christopher K.

AU - Shumlyanskyy, Leonid

AU - Sokur, Tetyana

AU - Bekker, Andrey

PY - 2018/12/1

Y1 - 2018/12/1

N2 - Middle-to-late Ediacaran (575-541 Ma) marine sedimentary rocks record the first appearance of macroscopic, multicellular body fossils, yet little is known about the environments and food sources that sustained this enigmatic fauna. Here, we perform a lipid biomarker and stable isotope (δ15Ntotal and δ13CTOC) investigation of exceptionally immature late Ediacaran strata (<560 Ma) from multiple locations across Baltica. Our results show that the biomarker assemblages encompass an exceptionally wide range of hopane/sterane ratios (1.6-119), which is a broad measure of bacterial/eukaryotic source organism inputs. These include some unusually high hopane/sterane ratios (22-119), particularly during the peak in diversity and abundance of the Ediacara biota. A high contribution of bacteria to the overall low productivity may have bolstered a microbial loop, locally sustaining dissolved organic matter as an important organic nutrient. These oligotrophic, shallow-marine conditions extended over hundreds of kilometers across Baltica and persisted for more than 10 million years.

AB - Middle-to-late Ediacaran (575-541 Ma) marine sedimentary rocks record the first appearance of macroscopic, multicellular body fossils, yet little is known about the environments and food sources that sustained this enigmatic fauna. Here, we perform a lipid biomarker and stable isotope (δ15Ntotal and δ13CTOC) investigation of exceptionally immature late Ediacaran strata (<560 Ma) from multiple locations across Baltica. Our results show that the biomarker assemblages encompass an exceptionally wide range of hopane/sterane ratios (1.6-119), which is a broad measure of bacterial/eukaryotic source organism inputs. These include some unusually high hopane/sterane ratios (22-119), particularly during the peak in diversity and abundance of the Ediacara biota. A high contribution of bacteria to the overall low productivity may have bolstered a microbial loop, locally sustaining dissolved organic matter as an important organic nutrient. These oligotrophic, shallow-marine conditions extended over hundreds of kilometers across Baltica and persisted for more than 10 million years.

UR - http://www.scopus.com/inward/record.url?scp=85046658562&partnerID=8YFLogxK

U2 - 10.1038/s41467-018-04195-8

DO - 10.1038/s41467-018-04195-8

M3 - Article

C2 - 29728614

AN - SCOPUS:85046658562

VL - 9

JO - Nature Communications

JF - Nature Communications

SN - 2041-1723

IS - 1

M1 - 1807

ER -

ID: 75978918