Results 111 to 120 of about 12,002 (245)

Ammonia‐oxidizing archaea release a suite of organic compounds potentially fueling prokaryotic heterotrophy in the ocean

open access: yesbioRxiv, 2019
Ammonia-oxidizing archaea (AOA) constitute a considerable fraction of microbial biomass in the global ocean, comprising 20-40% of the ocean’s prokaryotic plankton and thus play an important role in global nitrogen cycle.
Barbara Bayer   +6 more
semanticscholar   +1 more source

Reliance on blue, green, and brown energy channels drives a shift in the trophic position of riparian spiders

open access: yesEcology, Volume 107, Issue 1, January 2026.
Abstract Understanding the mechanisms shaping food chain length (FCL) has long been central to food web ecology. FCL is a key determinant of stability, energy flow efficiency, and biodiversity maintenance, but there is an ongoing debate about its underlying drivers.
Grégoire Saboret   +5 more
wiley   +1 more source

A review towards finding a simplified approach for modelling the kinetics of the soluble microbial products (SMP) in an integrated mathematical model of membrane bioreactor (MBR) [PDF]

open access: yes, 2013
Soluble microbial products (SMPs) tend to accumulate in the membrane bioreactor (MBR) systems as a consequence of high membrane rejection and apparently low biodegradability within the wastewater treatment system.
Guo, WS   +4 more
core   +1 more source

Effects of culture modes on polyglucan accumulation and molecular weight distribution in Galdieria sulphuraria strains

open access: yesJournal of Chemical Technology &Biotechnology, Volume 101, Issue 1, Page 200-210, January 2026.
Abstract BACKGROUND This study investigated the effects of different culture modes – autotrophy, mixotrophy and heterotrophy – on polyglucan accumulation and molecular weight distribution in four Galdieria sulphuraria strains. Understanding the impact of these culture modes helps optimize the production of reserve carbohydrates and modify their ...
Carlos A. Montenegro‐Herrera   +3 more
wiley   +1 more source

Under-ice respiration rates shift the annual carbon cycle in the mixed layer of an oligotrophic lake from autotrophy to heterotrophy

open access: yes, 2020
Ecosystem metabolism is an integrative measure of the production and respiration of carbon in aquatic ecosystems. However, under-ice regions and mixing periods are infrequently sampled because of logistical challenges and assumptions of low biological ...
J. Brentrup   +5 more
semanticscholar   +1 more source

Flow variability and macroinvertebrates jointly regulate stream periphyton and metabolism: Insights from experimental stream mesocosms

open access: yesLimnology and Oceanography, Volume 71, Issue 1, January 2026.
Abstract Climate change profoundly alters riverine flow regimes and community composition, affecting key ecosystem functions. We used an experimental mesocosm approach to examine how gradual flow velocity reduction (Experiment 1) and flushing events (Experiment 2) influence periphyton community composition and metabolism, with and without a ...
Flavia Tromboni   +13 more
wiley   +1 more source

Evaluating coral trophic strategies using fatty acid composition and indices.

open access: yesPLoS ONE, 2019
The ecological success of shallow water reef-building corals has been linked to the symbiosis between the coral host and its dinoflagellate symbionts (herein 'symbionts').
Veronica Z Radice   +5 more
doaj   +1 more source

Anthropogenic shift of planktonic food web structure in a coastal lagoon by freshwater flow regulation [PDF]

open access: yes, 2017
This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the ...
Hemraj, Deevesh A   +4 more
core   +2 more sources

High‐density sampling reveals biologically and tidally driven spatiotemporal variation in carbon dioxide fluxes in a tropical lagoon

open access: yesLimnology and Oceanography, Volume 71, Issue 1, January 2026.
Abstract Lagoons are recognized as significant CO2 sources in the global carbon cycle. However, the lack of comprehensive measurements capturing simultaneous spatiotemporal variations in partial pressure of CO2 (pCO2) limits our understanding of mechanisms driving CO2 dynamics in lagoons.
Fei‐Ling Yuan   +4 more
wiley   +1 more source

Putting the N in dinoflagellates

open access: yesFrontiers in Microbiology, 2013
The cosmopolitan presence of dinoflagellates in aquatic habitats is now believed to be a direct consequence of the different trophic modes they have developed through evolution.
Steve eDagenais-Bellefeuille   +1 more
doaj   +1 more source

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