A5055063854- Marine and fisheries research
- Marine animal studies overview
- Fish Ecology and Management Studies
- Ichthyology and Marine Biology
- Underwater Acoustics Research
- Coral and Marine Ecosystems Studies
- Fish Biology and Ecology Studies
- Identification and Quantification in Food
- Marine Bivalve and Aquaculture Studies
- Climate variability and models
- Fish biology, ecology, and behavior
- Oceanographic and Atmospheric Processes
- Isotope Analysis in Ecology
- Coastal and Marine Management
- Atmospheric and Environmental Gas Dynamics
- Turtle Biology and Conservation
- Ocean Acidification Effects and Responses
- Cephalopods and Marine Biology
- Marine and environmental studies
- Marine and coastal ecosystems
- Diet and metabolism studies
- Marine and coastal plant biology
- Aquaculture Nutrition and Growth
- Hydrocarbon exploration and reservoir analysis
- Fatty Acid Research and Health
Instituto Politécnico Nacional
2013-2025
Marina Del Rey Hospital
2013
Ifremer
2009
One of the biggest barriers to conducting ocean science around globe is limited access computational tools and resources, including software, computing infrastructure, data. Open tools, such as open-source open data, online offer promising solutions toward more equitable scientific resources. Here, we discuss enabling power these in under-resourced non-English speaking regions, based on experience gained organization three independent programs West African, Latin American, Indian Ocean...
ABSTRACT The silky shark ( Carcharhinus falciformis ) has the highest bycatch in gillnets, longlines, and purse seine globally. Its thermal depth preferences coincide with tropical tuna habitat, indicating a high capture vulnerability by these fisheries. present research seeks to determine environmental conditions that favor distribution identify areas probability of occurrence. data analyzed correspond records Eastern Pacific Ocean (EPO) published Inter‐American Tropical Tuna Commission...
This paper provides an overview of the progress Ifremer has made recently in fisheries acoustics and study small pelagic fish by: i) pushing observation frontiers using a range platforms including autonomous underwater vehicle, AUV, ii) developing measuring instruments methods iii) studying distributions. Presently, information from several frequencies single-beam echosounders is routinely collected together with data ME70 multibeam echosounder. For onboard acquisition control HERMES...
Climate regime shifts in the Northeast Pacific appear to have forced population size changes associated with major geographical variations position of center distribution and bulk biomass sardine (Sardinops caeruleus). These findings help explain disappearance sardines around 60 years ago at northern part California Current System their return following 1980s. The spatial processes described here differ from those suggesting that environmental lead progressive increasedecrease stock...
Abstract: Totoaba (Totoaba macdonaldi) is a fish species endemic to the Gulf of California, Mexico considered "under risk extinction" by several domestic and international institutions organizations. Population biology information for this scarce fragmented over past 45 years. The purpose study was use acoustic methods estimate biomass distribution totoaba necessary population status assessment. Based on ex-situ target strength (TS) measurements 23 individuals divided into seven group sizes,...
Periodicity is common in natural processes, however, extraction tools are typically difficult and cumbersome to use. Here we report a computational method developed MATLAB through function called Periods with the aim find main harmonic components of time series data. This designed obtain period, amplitude lag phase (Periods can be related climate, social or economic events). It based on methods periodic regression cyclic descent includes statistical significance testing. The proposed very...
Within the Gulf of California, Midriff Islands Region (MIR) is characterized by mixing conditions water masses that lead to high primary productivity, which fosters presence sardines, anchovies, and their predators.Using acoustic tools, we analyzed characteristics schools detected in three surveys carried out late spring 2012 2013 early summer 2014.We sought relate changes geographical distribution with Sea Surface Temperature (SST) Net Primary Productivity (NPP).The largest number was...
Abstract During the last 60 years, world marine fisheries potential has been estimated between 22·10 6 tons and 1 400·10 tons. However, there are no certain indications of when with what probability such will be reached. By fitting a logistic curve to observed catch, corrected for discards illegal, unreported unregulated fishing, here we calculated that stands 132·10 153·10 might achieved as soon year 2027, 95% confidence.
Abstract The 13 California sea lion breeding colonies in the Gulf of (GoC), Mexico are each characterized by different population growth trends, including a variable number births. Despite being located highly productive marine area, both species’ and births have declined significantly over past few decades. goal this study was to assess effects certain environmental variables on at three regions (northern, central southern) GoC (1995–2018). Data diet, small pelagic fish catches fisheries,...
Into different areas (e.g., academic, public) predictions of climate as part the process decision-making are required.Despite such information need, inconsistency global models to predict state in small scales (regions) is widely recognized.Considering this, we tested sea surface temperature (SST) 10 marine regions off coast Mexico.Using classification and regression trees, Mexican coastal states were grouped accordingly their similarity instrumental records air (AST).Such AST groups...
The seasonal and interannual variability of vertical transport (upwelling/downwelling) has been relatively well studied, mainly for the California Current System, including low-frequency changes latitudinal heterogeneity. aim this work was to identify potentially predictable patterns in upwelling/downwelling activity along North American west coast discuss their plausible mechanisms. To purpose we applied min/max Autocorrelation Factor technique time series analysis. We found that spatial...
Billfish rostra potentially have several functions; however, their role in feeding is unequivocal some species. Recent work linked morphological variation rostral micro-teeth to differences behavior two billfish species, the striped marlin (Kajikia audax) and sailfish (Istiophorus platypterus). Here, we present micro-tooth morphology for a third blue (Makaira nigricans), which use of rostrum still undocumented from systematic observations wild. We measured on tips marlin, using...
Abstract Fine‐scale movement patterns are driven by both biotic (hunting, physiological needs) and abiotic (environmental conditions) factors. The energy balance governs all movement‐related strategic decisions. Marine environments can be better understood considering the vertical component. From 24 acoustic trackings of 10 white sharks in Guadalupe Island, this study linked, for first time, horizontal data inferred six different behavioral states along with states, through use hidden Markov...
To obtain reliable fish biomass estimates by acoustic methods, it is essential to filter out the signals from unwanted scatterers (e.g. zooplankton). When data are collected at more than one frequency, methods that exploit differences in reflectivity of can be used achieve separation targets. These cannot applied with historical nor recent on board fishing vessels employed as scientific platforms, where only transducer available. Instead, a volume backscattering strength ( S v ) threshold...
During 2013-2015 a patch of warm water called Warm Blob appeared in the northeastern Pacific, producing several effects at biological and physical level. This event appears to be unique, however, evidence was encountered for another three events similar recent during period from 1854 2017 through analyzing historical anomalies SST Pacific Ocean. Each showed same distinctive spatial pattern —firstly, develops northern south Alaska, gradually spreads southward along coast reaching up Baja...
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The first steps have been taken to analyze the effects of small pelagic harvests on Gulf California ecosystem. primary goal this study was estimate latitudinal differences in regionalized baselines endangered and threatened marine species attracted a purse seine Mexican fishery fish. We also analyzed spatial patterns fishing effort California. Seven zones were California, including east west coasts, total 3,051 sets during January 2013 July 2014; data provided comprehensive picture...