About
12
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Introduction
The field of my study is related to the effects environmental perturbations (e.g. aquaculture, industry and urban activities) on macroalgae at marine ecosystems, assessing physiological responses for biomonitoring application
Education
February 2013 - February 2017
March 2000 - December 2005
Publications
Publications (12)
Notably, 56 worldwide experts gathered for the Antimicrobial Assessment on Global Aquaculture Production (AGAP) series of workshops to (1) evaluate the current state of knowledge on antimicrobial use and identify existing gaps; (2) formulate strategies to identify ecologically relevant impact indicators and establish thresholds for assessment; (3)...
One hundred percent of the blue mussel farm production in 2021 took place in the administrative Region of Los Lagos, Chile. Despite the spatial concentration of this activity, there are no studies evaluating the environmental impact where farms are operating. This study integrated various approaches to assess soft-bottom areas in which two farms wi...
Waste remediation (waste decomposition) is one of the ecosystem services (ES) salmon farming relies upon to reduce organic waste from the uneaten food and fish faeces through the metabolism of fauna and aerobic and anaerobic microbial communities. Our objective was to infer the changes that may occur in ecosystem capacity for reducing organic matte...
The Tasmanian salmon industry had remained relatively free of major viral diseases until the emergence of pilchard orthomyxovirus (POMV). Originally isolated from wild pilchards, POMV is of concern to the industry as it can cause high mortality in farmed salmon (Salmo salar). Field observations suggest the virus can spread from pen to pen and betwe...
The Derwent estuary, in Tasmania (Australia), is highly contaminated with heavy metals with significant levels
in both sediments and benthic fauna. However, little is known about metal content in benthic primary producers. We characterized metal content (Arsenic, Cadmium, Copper, Lead, Selenium and Zinc) in twelve species of macrophyte, including r...
We investigated physiological responses of Ulva australis to metals and their implications for biomonitoring and management tool. To determine the capacity of Ulva to accumulate metals over the short-term, we undertook an in situ experiment where we transplanted thalli to sites with different levels of metal pollution. After 12 days, arsenic, coppe...
This study investigated temporal and spatial patterns of zinc content in Ulva australis. Samples were collected from the Derwent Estuary, Tasmania, Australia, between 2013-2015, at locations where zinc levels were elevated in both sediments and seawater historically. Zinc content was high (~321 mg·kg-1) in U. australis at all sampling times, with l...
This research evaluated the effect of zinc (Zn) on the ultrastructure and the photosynthetic efficiency of a common green alga. Ulva australis was grown in the laboratory for 7days under a range of different Zn concentrations (0, 25, 50 and 100μgL(-1)). Growth rate (Gr), photosynthetic efficiency (Fv/Fm and ETRmax), photosynthetic pigments, and met...
Chemical fixation is a critical step in the analysis of the ultrastructure of seaweeds because the wrong approach can compromise the ability to distinguish fine-scale cellular composition. Fixation agents, fixation time and type of tissue are important factors to consider for transmission electron microscopy (TEM), and not every protocol is suitabl...
In Chile, the brown alga Macrocystis pyrifera has been subject to strong harvesting pressure, resulting in severe reduction of natural beds, and a threat to the sustainability of the resource. Repopulation is a possible means for the recovery of overexploited natural populations of M. pyrifera. In this study, we determined density (ind. cm(-2)), le...
La obtención de restos de macroalgas flotando a la deriva en aguas frente al sur de Chile permite, por primera vez, explorar la presencia de peces nadando junto con ellas. Se registra la presencia del pez aguja Leptonotus blainvilleanus (familia Syngnathidae); la cojinova Seriolella porosa (familia Centrolophidae); el pampanito, Stromateus stellatu...
The obtention of floating macroalgae debris in waters of southern Chile, for the first time allowed to explore the presence of fishes swimming together with such kind of ensemble. The presence of the following three species was recorded: the pipefish Leptonotus blainvilleanus (Family Syngnathidae), the chicy ruff Seriolella porosa (Family Centrolop...
