Ximena FloresMelo

Ximena FloresMelo
Centro Austral de Investigaciones Científicas | CAIC · Oceanography lab

PhD student in Oceanography

About

16
Publications
2,125
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22
Citations
Introduction
I work on characterizing the physical mechanisms that regulate the spatial-temporal patterns of downward flows of particles, evaluating the quantity and quality of particulate organic matter considered as a link between surface primary productivity and benthic heterotrophic ecosystems along a longitudinal gradient in the Beagle Channel. And also I am starting to work on monitor small temporal scales environmental variabilities with satellite products as ocean color and sea surface temperature

Publications

Publications (16)
Presentation
The Beagle Channel (BC) is a sub-Antarctic coastal marine environment (~54.5ºS) that connects the Pacific and Atlantic oceans and is influenced by runoff, wind and seasonal mixing. Along its 300 km length, the BC has hydrological sub-basins (SC) separated from each other by bathymetric barriers. The object of this study focuses on the internal SC (...
Presentation
The Beagle Channel (BC) is an inter-oceanic passage shared by Argentina and Chile that connects the Pacific Ocean and the Atlantic Ocean and has contrasting hydrological sub-basins along its 300 km length. This system is influenced by the inflow of sub-Antarctic waters that mix with continental contributions from glaciers and fluvial discharges, ha...
Article
Full-text available
The Beagle Channel (BC) is a long and narrow interoceanic passage (∼270 km long and 1–12 km wide) with west-east orientation and complex bathymetry connecting the Pacific and Atlantic oceans at latitude 55°S. This study is the first integrated assessment of the main oceanographic features of the BC, using recent oceanographic observations from crui...
Article
Full-text available
We carried out the physicochemical characterization of extreme environments of acidic geothermal springs of the Copahue Thermal Complex, and isolated and cultivated algae used for therapeutic and medicinal purposes. Ecophysiological aspects, algal photosynthetic responses and potential toxicity of sediments were analysed. At the 15 sampling sites (...
Presentation
Full-text available
Category Scientific Program Abstract > Special Sessions > SS80 Dynamics of organic matter in the river-ocean continuum: From analytical methods, molecular and isotope geochemistry, to ecosystem modelling Preference: Oral
Article
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This study examines the distribution and seasonal evolution of hydrographic, hydrodynamic, and nepheloid layers in Ushuaia Bay and the submerged glacial valley that connects it to the Beagle Channel. The hydrographic structure is highly seasonal, with a total mixing of the water column in winter and the appearance of a pycnocline between 50 and 70...
Presentation
Full-text available
The Beagle Channel is a subantarctic passage connecting the Pacific and Atlantic oceans, and where mixing processes between oceanic and continental waters and strong land-to-sea exchanges of water and particulate matter are taking place. A collection of hydrographic, hydrodynamic and nephelometric observations is presented in this work to advance...
Article
Full-text available
Flores Melo, X.; I. N. de la Rosa, M. T. Wenzel & M. M. Diaz. 2019. Acid-thermophilic cianobacteria of the Copahue Thermal Complex, Neuquén, Argentina. Darwiniana, nueva serie 7(1): 39-56. The objective of this work was to identify the species of acid-thermophilic cyanobacteria which, together with the waters, microalgae and mud, are important ther...
Article
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Little is known about the base of the food web that could support the high productivity and marine biodiversity found in San Jorge Gulf, Patagonia, Argentina. Here we examine the key components of the microbial food web, including the standing stock and physiological state of the phytoplankton in the context of key oceanographic variables in the gu...
Article
Full-text available
Tidal fronts are interfaces that separate stratified from mixed waters. The stratified surface zone of a front has lower inorganic nutrient concentrations than the mixed side, and thus, phytoplankton assemblages are expected to differ from one side of the front to the other. Here, we characterize the physics, nutrient dynamics, and biology of the s...
Conference Paper
Full-text available
The Beagle Channel and in particular Ushuaia Bay, are subantarctic environments where mixing processes between oceanic and continental waters, and strong land-to-sea exchanges of water and particulate matter are taking place. Multiple sources of particulate matter to the channel can be identified: glaciers, rivers, direct runoff from forests along...
Conference Paper
Full-text available
El Canal Beagle (CB) es un ambiente marino costero austral complejo, que conecta los océanos Pacífico y Atlántico, y que recibe en su recorrido importantes aportes terrígenos por parte de las cadenas montañosas de los Andes Fueguinos y otros aportes de materia orgánica de origen antrópico por parte de la ciudad de Ushuaia. Entre los días 27 a 31 de...
Poster
Full-text available
El Canal Beagle (CB) es un ambiente marino costero austral complejo, que conecta los océanos Pacífico y Atlántico, y que recibe en su recorrido importantes aportes terrígenos por parte de las cadenas montañosas de los Andes Fueguinos y otros aportes de materia orgánica de origen antrópico por parte de la ciudad de Ushuaia. Entre los días 27 a 31 de...
Article
Full-text available
Tidal fronts are interfaces that separate stratified from mixed waters. The stratified surface zone of a front has lower inorganic nutrient concentrations than the mixed side, and thus, phytoplankton assemblages are expected to differ from one side of the front to the other. Here, we characterize the physics, nutrient dynamics, and biology of the s...

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Projects

Projects (2)
Project
I am interested in coastal oceanography and marine microbiology. The framework of my PhD research are the spatial and seasonal patterns of the microbial food web dynamics and functioning in Ushuaia Bay and along the Beagle Channel (Tierra del Fuego, South America). Supervisors, Dr. Andrea Malits, Dr. Mariana Lozada, and Dr. Jacobo Martin.
Project
To study the circulation and dynamics of suspended particulate matter in Ushuaia Bay (Tierra del Fuego, Argentina)