Short-term variability in the sedimentary BIT index of Lake Challa, East Africa over the past 2200 years : validating the precipitation proxy [PDF]
, 2015 . The branched vs. isoprenoid index of tetraethers (BIT index) in Lake Challa sediments has been applied as a monsoon precipitation proxy on the assumption that the primary source of branched tetraether lipids (brGDGTs) was soil washed in from the lake's
Buckles, LK +4 more
core +1 more source
Ammonia oxidation and ammonia-oxidizing bacteria and archaea from estuaries with differing histories of hypoxia [PDF]
The ISME Journal, 2007 Abstract Nitrification, the oxidation of NH4+ to NO2− and subsequently to NO3−, plays a central role in the nitrogen cycle and is often a critical first step in nitrogen removal from estuarine and coastal environments. The first and rate-limiting step in nitrification is catalyzed by the enzyme ammonia monooxygenase (AmoA).
Jane M, Caffrey +3 more
openaire +2 more sources
The unique chemistry of Eastern Mediterranean water masses selects for distinct microbial communities by depth [PDF]
, 2015 Peer reviewedPublisher ...
Ayers, Kati A +6 more
core +3 more sources
Angewandte Chemie International Edition, EarlyView.Association of the L‐cluster with the nitrogenase assembly proteins NifEN (NifENL) or NifB (NifBL) intrinsically endows these proteins with N2‐reducing activity, enabling in vitro N2‐reduction by NifENL and NifBL when supplied with chemical reductants or photoexcited quantum dots while supporting in vivo N2‐fixation in NifENL‐ and NifENL‐expressing ...
Robert Quechol +4 more
wiley +1 more source
A positive relationship between the abundance of ammonia oxidizing archaea and natural abundance δ15N of ecosystems [PDF]
, 2013 We present a significant relationship between the natural abundance isotopic composition of ecosystem pools and the abundance of a microbial gene. Natural abundance 15N of soils and soil DNA were analysed and compared with archaeal ammonia oxidizer ...
Adair, K +5 more
core +1 more source
Ammonia oxidizers offset acidification stress via adaptive substrate affinity in aquatic ecosystems
Nature CommunicationsAmmonia oxidation, a critical nitrogen cycle process, exhibits contradictory responses to aquatic acidification, and the underlying mechanism remains unresolved. Here, through pH manipulation experiments across diverse ecosystems and with a model ammonia-
Senwei Tong +6 more
doaj +1 more source
Biofuels, Bioproducts and Biorefining, EarlyView.Abstract Tofu and tempeh, derived from soybeans, are widely consumed for their nutritional value and high protein content. However, the production of these foods generates nutrient‐rich wastewater that poses environmental challenges while offering opportunities for valorization.
Lydia Mawar Ningsih +3 more
wiley +1 more source
Genomic Inference of the Metabolism and Evolution of the Archaeal Phylum Aigarchaeota [PDF]
, 2018 Microbes of the phylum Aigarchaeota are widely distributed in geothermal environments, but their physiological and ecological roles are poorly understood.
Castelle, Cindy J. +14 more
core +3 more sources
Immobilization of active ammonia-oxidizing archaea in hydrogel beads
npj Clean Water, 2021 Ammonia-oxidizing archaea (AOA) are major players in the nitrogen cycle but their cultivation represents a major challenge due to their slow growth rate and limited tendency to form biofilms. In this study, AOA was embedded in small (~2.5 mm) and large (~
Matthieu Landreau +3 more
doaj +1 more source
Microbial communities and functional diversity in seafood
JSFA reports, EarlyView.Abstract Functional diversity encompasses ecosystem processes that enhance adaptability to environmental change. This study explores the diversity of microorganisms associated with seafood. In this paper, we present our knowledge of microbial diversity in relation to seafood.
Christian Larbi Ayisi +3 more
wiley +1 more source