Ammonium and nitrite oxidation at nanomolar oxygen concentrations in oxygen minimum zone waters

LA Bristow, T Dalsgaard, L Tiano… - Proceedings of the …, 2016 - National Acad Sciences
A major percentage of fixed nitrogen (N) loss in the oceans occurs within nitrite-rich oxygen
minimum zones (OMZs) via denitrification and anammox. It remains unclear to what extent …

The Humboldt Current System: Ecosystem components and processes, fisheries, and sediment studies

V Montecino, CB Lange - Progress in Oceanography, 2009 - Elsevier
In the Humboldt Current System (HCS), biological and non-biological components,
ecosystem processes, and fisheries are known to be affected by multi-decadal, inter-annual …

[HTML][HTML] Oxygen distribution and aerobic respiration in the north and south eastern tropical Pacific oxygen minimum zones

L Tiano, E Garcia-Robledo, T Dalsgaard… - Deep Sea Research …, 2014 - Elsevier
Highly sensitive STOX O 2 sensors were used for determination of in situ O 2 distribution in
the eastern tropical north and south Pacific oxygen minimum zones (ETN/SP OMZs), as well …

[HTML][HTML] Oxygen modulates bacterial community composition in the coastal upwelling waters off central Chile

M Aldunate, R De la Iglesia, AD Bertagnolli… - Deep Sea Research Part …, 2018 - Elsevier
Bacterial community composition and its relationship to oxygen were investigated in the non-
sulfidic shelf waters exposed to seasonal upwelling and oxygen deficiency off central Chile …

Fungal parasites infect marine diatoms in the upwelling ecosystem of the Humboldt current system off central Chile

MH Gutiérrez, AM Jara, S Pantoja - Environmental …, 2016 - Wiley Online Library
This is the first report of fungal parasitism of diatoms in a highly productive coastal upwelling
ecosystem, based on a year‐round time series of diatom and parasitic Chytridiomycota …

The role of fungi in processing marine organic matter in the upwelling ecosystem off Chile

MH Gutiérrez, S Pantoja, E Tejos, RA Quiñones - Marine biology, 2011 - Springer
In a study that spanned from March 2007 through November 2009, we report high fungal
biomass and over 90% of extracellular enzymatic activity occurring in the size classes …

High diversity of ammonia‐oxidizing archaea in permanent and seasonal oxygen‐deficient waters of the eastern South Pacific

V Molina, L Belmar, O Ulloa - Environmental microbiology, 2010 - Wiley Online Library
The community structure of putative aerobic ammonia‐oxidizing archaea (AOA) was
explored in two oxygen‐deficient ecosystems of the eastern South Pacific: the oxygen …

[HTML][HTML] Micro-phytoplankton community structure in the coastal upwelling zone off Concepción (central Chile): Annual and inter-annual fluctuations in a highly …

V Anabalón, CE Morales, HE González… - Progress in …, 2016 - Elsevier
An intensification of upwelling-favorable winds in recent decades has been detected in
some of the main eastern boundary current systems, especially at higher latitudes, but the …

Synchronous shifts in dissolved organic carbon bioavailability and bacterial community responses over the course of an upwelling‐driven phytoplankton bloom

EK Wear, CA Carlson, AK James… - Limnology and …, 2015 - Wiley Online Library
Interactions between dissolved organic carbon (DOC) and bacterioplankton were examined
during a diatom and Phaeocystis bloom in the Santa Barbara Channel (SBC) over five days …

[PDF][PDF] Cambios hidrográficos estacionales a lo largo de la costa del Golfo de Arauco (37º S)

OA Vergara, J Contreras-Rojas, R Muñoz, L Bermedo… - Gayana, 2024 - researchgate.net
El golfo de Arauco, situado en Chile centro-sur, es una de las zonas con las tasas más altas
de producción biológica en el Sistema de Corrientes de Humboldt Sur. En este golfo, donde …