Palaeoecology Of A Billion-Year-Old Nonmarine Cyanobacterium From The Torridon Group And Nonesuch Formation

Pencarian berdasarkan :

SEMUA Pengarang Subjek ISBN/ISSN Pencarian Spesifik

Pencarian terakhir:

e-journal

Palaeoecology Of A Billion-Year-Old Nonmarine Cyanobacterium From The Torridon Group And Nonesuch Formation

Paul K. Strother [et al.] - Nama Orang;

A new chroococcalean cyanobacterium is described from approximately 1-billion-year-old non-marine deposits of the Torridonian Group of Scotland and the Nonesuch Formation of Michigan, USA. Individual cells of the new microfossil, Eohalothece lacustrina gen. et sp. nov., are associated with benthic microbial biofilms, but the majority of samples are recovered in palynological preparations in the form of large, apparently planktonic colonies, similar to
extant species of Microcystis. In the Torridonian, Eohalothece is associated with phosphatic nodules, and we have developed a novel hypothesis linking Eohalothece to phosphate deposition in ancient freshwater settings. Extant cyanobacteria can be prolific producers of extracellular microcystins, which are non-ribosomal polypeptide phosphatase inhibitors. Microcystins may have promoted the retention and concentration of sedimentary organic phosphate prior to mineralization of francolite and nodule formation. This has a further implication that the Torridonian lakes were nitrogen limited as the release of microcystins is enhanced under such conditions today. The abundance and wide distribution of Eohalothece lacustrina attests to the importance of cyanobacteria as oxygen-producing photoautotrophs in lacustrine ecosystems at the time of the Mesoproterozoic–Neoproterozoic transition.

Key words: Precambrian, lacustrine, phosphogenesis, microcystins,Mesoproterozoic.

Ketersediaan

Tidak ada salinan data

Informasi Detail

Judul Seri: Palaeontology
No. Panggil: -
Penerbit: : John Wiley & Sons, Ltd.., 2016
Deskripsi Fisik: [Palaeontology, Vol. 59, Part 1, 2016, pp. 89–108]
Bahasa: English
ISBN/ISSN: doi: 10.1111/pala.12
Klasifikasi: -
Tipe Isi: -
Tipe Media: -
Tipe Pembawa: -
Edisi: -
Subjek: BIOLOGI
Info Detail Spesifik: -
Pernyataan Tanggungjawab: Wati/Agus

Versi lain/terkait

Tidak tersedia versi lain

Lampiran Berkas

FULL TEXT:Palaeoecology Of A Billion-Year-Old Nonmarine Cyanobacterium From The Torridon Group And Nonesuch Formation

Komentar

Anda harus masuk sebelum memberikan komentar