Results 31 to 40 of about 2,044 (183)

Morphological diversity increases with oligotrophy along a zooplankton time series

, 2018
International ...
Cailleton, C., Irisson, Jean-Olivier, Jalabert, Laëtitia, Desnos, Corinne, Elineau, Amanda, Ayata, Sakina-Dorothée, Stemmann, Lars   +6 more
core   +4 more sources

Predominance of Cand. Patescibacteria in Groundwater Is Caused by Their Preferential Mobilization From Soils and Flourishing Under Oligotrophic Conditions

Frontiers in Microbiology, 2019
Despite the widely observed predominance of Cand. Patescibacteria in subsurface communities, their input source and ecophysiology are poorly understood.
Martina Herrmann, Martina Herrmann, Carl-Eric Wegner, Martin Taubert, Patricia Geesink, Katharina Lehmann, Lijuan Yan, Lijuan Yan, Robert Lehmann, Kai Uwe Totsche, Kirsten Küsel, Kirsten Küsel   +11 more
doaj   +1 more source

Feeding strategy and dietary preference shape the microbiome of epipelagic copepods in a warm nutrient‐impoverished ecosystem

Environmental DNA, 2023
Copepods provide a rich organic microenvironment allowing the settlement and proliferation of microorganisms, forming dynamic microbial hotspots in the oceans.
Ximena Velasquez, Arseniy R. Morov, Natalia Belkin, Tuba Terbiyik Kurt, Maxim Rubin‐Blum, Dan Tchernov, Dalit Meron, Tamar Guy‐Haim   +7 more
doaj   +1 more source

Microbes at Surface-Air Interfaces: The Metabolic Harnessing of Relative Humidity, Surface Hygroscopicity, and Oligotrophy for Resilience

, 2023
The human environment is predominantly not aqueous, and microbes are ubiquitous at the surface-air interfaces with which we interact. Yet microbial studies at surface-air interfaces are largely survival-oriented, whilst microbial metabolism has ...
Otini Kroukamp (10974982), Darren R. Korber (2831078), Wendy Stone (10231820), Jennifer McKelvie (2480584), Gideon Wolfaardt (14625866)   +4 more
core   +1 more source

Red to Green: A Lipid Biomarker Record of Tonian-Ediacaran Algae in Siberia. [PDF]

Geobiology
ABSTRACT Multiple lines of evidence point to a major diversification of Eukarya in the late Tonian period, ca. 800–720 Ma ago. Regular steranes, lipid biomarkers primarily sourced from eukaryotes, are first unambiguously reported from multiple sites. Here, we present lipid biomarker stratigraphic records from two drill‐cores from the Lena‐Anabar Basin ...
Rizzo AI, Bekker A, Kuznetsov AB, Ershova VB, Xiong Y, Karlstrom KE, Poulton SW, Love GD.   +7 more
europepmc   +2 more sources

Microcrustacean assemblages composition and environmental variables in lakes and ponds of the Andean region - South of Chile (37-39° S) Composição de comunidades de microcustáceos e variáveis ambientais em lagos e lagoas da região andina - sul do Chile (37-39° S)

Brazilian Journal of Biology, 2011
The zooplankton assemblages in Chilean Patagonian lakes are characterised mainly by their low biodiversity and high predominance of calanoids copepods, a pattern that has been studied for large and deep lakes between 38-51° S, and shallow ponds at 51° S.
P. De los Ríos-Escalante, E. Hauenstein, M. Romero-Mieres   +2 more
doaj   +1 more source

In situ cell division and mortality rates of SAR11, SAR86, Bacteroidetes, and Aurantivirga during phytoplankton blooms reveal differences in population controls

mSystems, 2023
Net growth of microbial populations, that is, changes in abundances over time, can be studied using 16S rRNA fluorescence in situ hybridization (FISH). However, this approach does not differentiate between mortality and cell division rates.
Jan D. Brüwer, Luis H. Orellana, Chandni Sidhu, Helena C. L. Klip, Cédric L. Meunier, Maarten Boersma, Karen H. Wiltshire, Rudolf Amann, Bernhard M. Fuchs   +8 more
doaj   +1 more source

Types and Distribution of Bioactive Polyunsaturated Aldehydes in a Gradient from Mesotrophic to Oligotrophic Waters in the Alborán Sea (Western Mediterranean)

Marine Drugs, 2020
Polyunsaturated aldehydes (PUAs) are bioactive molecules suggested as chemical defenses and infochemicals. In marine coastal habitats, diatoms reach high PUA production levels during bloom episodes.
Ana Bartual, María Hernanz-Torrijos, Iria Sala, María J. Ortega, Cristina González-García, Marina Bolado-Penagos, Angel López-Urrutia, Leonardo Romero-Martínez, Luís M. Lubián, Miguel Bruno, Fidel Echevarría, Carlos M. García   +11 more
doaj   +1 more source

Biotic and Isotopic Vestiges of Oligotrophy on Continental Shelves During Oceanic Anoxic Event 2 [PDF]

Global Biogeochemical Cycles, 2021
AbstractThe widespread expansion of the oxygen minimum zone onto shelves has been commonly regarded as a primary cause of benthos extinction in epicratonic sea ecosystems during the Cenomanian–Turonian boundary event (CTBE). However, neither lithology, geochemical proxies, nor micropaleontological data support this hypothesis.
Zofia Dubicka, Maciej Bojanowski, Danuta Peryt, Marcin Barski   +3 more
openaire   +5 more sources

Archaea in organic-lean and organic-rich marine subsurface sediments: an environmental gradient reflected in distinct phylogenetic lineages

Frontiers in Microbiology, 2012
Examining the patterns of archaeal diversity in little-explored organic-lean marine subsurface sediments presents an opportunity to study the association of phylogenetic affiliation and habitat preference in uncultured marine Archaea.
Alan M Durbin, Andreas eTeske
doaj   +1 more source