Mario A. Pardo

Mario A. Pardo
CONACYT - Ensenada Center for Scientific Research and Higher Education · Unidad La Paz

PhD
Modeling the habitat, behavior, abundance, and population dynamics of marine megafauna.

About

22
Publications
7,507
Reads
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264
Citations
Citations since 2017
14 Research Items
205 Citations
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Introduction
Marine ecologist interested in providing robust base lines for the conservation of marine mega-fauna by studying its responses to various scales of environmental and ecological forcing, in terms of the species' distribution, abundance, population dynamics, and behavior. In our laboratory, the analyses of these processes often involve the inference of parameters under explicit ecological scenarios, represented mainly as Bayesian hierarchical models.
Additional affiliations
June 2015 - July 2016
Ensenada Center for Scientific Research and Higher Education
Position
  • Research Associate
July 2012 - October 2012
NOAA Fisheries, Southwest Fisheries Science Center
Position
  • Ph.D. Intern
Description
  • Hierarchical Bayesian modeling of the short-beaked common dolphin density in the eastern tropical Pacific as a function of thermocline depth
September 2010 - November 2011
Universidad de Colima
Position
  • Marine mammal and chelonian observer
Description
  • Study of the possible impact of methane ships on marine mammals and chelonians
Education
August 2010 - August 2014
Universidad Nacional Autónoma de México
Field of study
  • Marine Sciences and Limnology
January 2007 - June 2009
Instituto Politécnico Nacional
Field of study
  • Marine Resources Management
January 2000 - December 2005
Universidad de Bogotá Jorge Tadeo Lozano
Field of study
  • Marine Biology

Publications

Publications (22)
Article
Full-text available
Highly mobile odontocetes need habitats with environmental conditions with the potential of aggregating enough and high-quality prey, to maximize foraging success. Until now, the characterization of those habitats was in terms of physical and biological indicators of high production, capable of attracting and sustaining prey. Nevertheless, there ha...
Article
We evaluated the effects of sea surface temperature anomalies (SST A) in the southern California Current Ecosystem on the annual Guadalupe fur seal (Arctocephalus townsendi) pup production, a species recovering from near extinction. Pup counts from 1991 to 1993 and from 2006 to 2019 were used to estimate deviations from a long-term trend as a proxy...
Article
Full-text available
The population growth of top predators depends largely on environmental conditions suitable for aggregating sufficient and high-quality prey. We reconstructed numerically the size of a resident population of California sea lions in the Gulf of California during 1978–2019 and its relation with multi-decadal sea surface temperature anomalies. This is...
Article
Full-text available
Fin whales in the Gulf of California constitute a resident population genetically isolated from the rest of the North Pacific Ocean. Its small population size and the scarce information available about its dynamics in a semi-enclosed sea underline the importance of conducting studies about its reproduction. Given the monsoonal regime that dominates...
Article
Full-text available
Migration is a complex behavior that has evolved in multiple taxonomic groups as a means of accessing productive foraging grounds and environmentally stable areas suitable for reproduction. For migratory whales that forage throughout the year because of their high energetic demands, changes in the abundance of prey in different areas along their mi...
Article
This study is the first assessment on how short-finned pilot whales (Globicephala macrorhynchus) move within the Gulf of Mexico. In April 2018, seven adult animals were tagged using location-only satellite transmitters in the south-western Gulf (18°59′N and 95°19′W). When tagged, all animals were in a medium-size aggregation that split after a week...
Article
Migratory marine megafauna generally move vast distances between productive foraging grounds and environmentally stable breeding grounds, but characterizing how they use these habitats to maintain homeostasis and reproduce is difficult. We used isotope analysis of blue whale skin strata (n = 621) and potential prey (n = 300) to examine their migrat...
Article
From fall 2013 through 2015, a large-scale, multi-year warm water anomaly occurred in the northeast Pacific Ocean. The phenomenon had negative impacts on some oceanic predators, including higher mortalities and poor body conditions. We studied the effect of this warm water anomaly on the weight gain of Guadalupe fur seal(Arctocephalus philippii tow...
Article
The Pacific harbor seal (Phoca vitulina richardii) colonies located along the Baja California Peninsula represent the southernmost limit of the species distribution. During certain periods of the year, they congregate on land in coastal zones and islands to nurse or molt. The abundance estimations from Alaska to Baja California have focused their e...
Method
Full-text available
This illustrated guide is intended to aid during touristic observation of marine mammals in the Gulf of California. It includes basic information on the proper ways of aproaching the animals, the forbiden practices, some identification characteristics of each species, their main prey, and their conservation status.
Technical Report
On February 9, 2017, CICESE-ULP and LightHawk conducted an aerial survey in the Gulf of Ulloa, off the Baja California Peninsula, in search for migrating baleen whales and other marine megafauna, with the aim of collecting data suitable for abundance estimation and distribution.
Article
Coastal habitats are crucial to pinnipeds for resting, molting, and reproduction. We examined terrestrial habitat preferences of four pinniped species (California sea lion, Guadalupe fur seal, harbor seal, and northern elephant seal) on the islands off the western coast of the Baja California Peninsula, Mexico. Boat-based surveys were conducted whi...
Article
Full-text available
We inferred the population densities of blue whales (Balaenoptera musculus) and short-beaked common dolphins (Delphinus delphis) in the Northeast Pacific Ocean as functions of the water-column’s physical structure by implementing hierarchical models in a Bayesian framework. This approach allowed us to propagate the uncertainty of the field observat...
Article
Full-text available
La Paz Bay is a distinct region within the Gulf of California whose rich cetacean community exhibits an intense annual overturn. We studied the environmental conditions that could drive this change over the course of a year. Cetacean biomass was estimated from monthly surveys, with concurrent collection of water-column measurements of temperature,...

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Projects

Projects (6)
Project
To establish a health baseline of Guadalupe fur seal population at Gudalupe Island.
Project
To improve our understanding of the populations, conservation status, and ecological relationships of cetaceans in Colombian waters on the Caribbean and Pacific regions.
Project
Ecological comparison of the same region during four seasonal surveys in two years: one non-El NIño, one extreme El Niño.