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Jaime Rodríguez-Estival

Jaime Rodríguez-Estival
Azeral Environmental Sciences · CEO

​BSc, MSc, PhD - Environmental Scientist & Ecotoxicologist

About

34
Publications
6,210
Reads
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632
Citations
Introduction
I am an Environmental Scientist specialized in Ecotoxicology. From 2006 to 2015, I have been working at several research institutions in the development of research projects related to Environmental Sciences, and involved in training, environmental education and nature interpretation activities. My passion for Science, Education, and Nature provided me with the experience and motivation to establish the freelance professional firm Azeral Environmental Sciences.
Additional affiliations
January 2016 - present
Azeral Environmental Sciences
Position
  • Environmental Scientist | Ecotoxicologist
June 2013 - May 2015
The University of Calgary
Position
  • PostDoc Position
January 2012 - May 2013
Spanish Institute of Game and Wildlife Research (IREC – CSIC, UCLM, JCCM)
Position
  • Research Assistant
Education
March 2010 - June 2011
University of Castilla-La Mancha
Field of study
  • Basic and Applied Research in Game Resources
January 2008 - March 2012
University of Castilla-La Mancha
Field of study
  • Ecotoxicology
October 2007 - June 2008
University of Castilla-La Mancha
Field of study
  • Teaching Certificate

Publications

Publications (34)
Article
The chronic exposure of livestock to lead (Pb) pollution in historical mining areas may represent significant and unnecessary costs for farmers and primary producers, in addition to important food safety risks. Here, we evaluate the effect of mineral supplements, in the form of a commercial mineral block (MB), to reduce Pb bioavailability and toxic...
Article
Full-text available
Soil contamination in former mining districts is a persistent problem resulting from the historic lack of legal requirements as regards land restoration after mine closures. Much of this polluted land is currently being used worldwide for livestock and big game production, with the consequent health risks for the animals exposed and the subsequent...
Article
The invasive red swamp crayfish (Procambarus clarkii) has become a major food resource for Eurasian otters (Lutra lutra) in the Iberian Peninsula. Crayfish accumulate large amounts of metals, and hence otters could be at risk of exposure and intoxication through crayfish consumption. We conducted a food safety risk assessment for otters inhabiting...
Article
Here we characterize the bioaccumulation of mercury (Hg) and lead (Pb) in red swamp crayfish (Procambarus clarkii) from two river courses in Central Spain that are impacted by historical Hg and Pb mining activities, respectively. We estimate the absolute oral bioavailability of metals in crayfish tissues by means of in vitro bioaccessibility simula...
Article
Top predators are fundamental drivers in maintaining ecosystems and preserving biodiversity. However, a number of species have experienced severe population declines and currently face critical conservation challenges. Although exposure to chemical contaminants has been recognized as a meaningful threat for wild carnivores, its population effect ha...
Article
European populations of black-necked grebes (Podiceps nigricollis) congregate every year to moult at the salt ponds of the Odiel Marshes (SW Spain). However, the Odiel Marshes are part of one of the most metal-polluted coastal estuaries in the world, which may pose risks to wildlife. We assessed the exposure of grebes to metal pollution during the...
Poster
Full-text available
Conclusions  Supplemented animals tended to have lower levels of Pb in blood, milk and feces.  The PHA does not show differences between supplemented and non-supplemented animals, but biomarkers of oxidative stress (GPx) increase their activity in non-supplemented animals to counteract the environmental toxicant.  Different relationships between...
Article
Changes in the concentration of circulating essential elements in animals over life may be indicative of periods of vulnerability to deficiencies and associated diseases. Here we studied age-related variations in essential elements (Se, Cu, Zn and Mn) and some selected oxidative stress biomarkers (GPx, SOD, vitamin A and vitamin E) in blood of an I...
Technical Report
Full-text available
El presente informe (financiado por la JCCM y documento parte del proceso de participación pública previo a la declaración del Monumento Natural) es el resultado de un completo estudio cuyo objetivo principal fue caracterizar el uso público actual del futuro Monumento Natural de Las Chorreras del río Cabriel (provincia de Cuenca, España). La consec...
Article
Information on naturally occurring thyroid disease in wild animals in general and in small mammals specifically is extremely limited. In the present field-based work, we investigated the structure and function of thyroid glands of deer mice (Peromyscus maniculata) studied as sentinels of ecosystem sustainability on reclaimed areas post-mining on th...
Article
The ingestion of spent lead (Pb) from ammunition is a known cause of mortality in waterfowl, but little is known about sublethal effects produced by Pb poisoning on birds, especially in wild populations. We studied potential sublethal effects associated with Pb exposure in mallards Anas platyrhynchos from the Ebro delta (NE Spain) after a ban on Pb...
Article
Oxidative stress biomarkers can provide highly relevant insights into the physiological state of an organism. We compared endogenous oxidative stress biomarkers (lipid peroxidation and glutathione redox status) in the liver and testes as well as the hepatic antioxidant vitamins A and E in deer mice (Peromyscus maniculatus) collected from a reclaime...
Article
The extraction of bitumen in areas of northeastern Alberta (Canada) has been associated with the release of complex mixtures of metals, metalloids, and polycyclic aromatic compounds (PACs) to the environment. To mitigate effects on ecosystems, Canadian legislation mandates that disturbed areas be reclaimed to an ecologically sustainable state after...
Article
Increasing activity of oil sands extraction and processing in northern Alberta is marked by ongoing controversy about the nature and extent of associated environmental impacts. Bitumen contains a mixture of toxic chemicals, including metals and residual polycyclic aromatic hydrocarbons (PAHs), whose release into the environment poses a distinct ris...
Article
Full-text available
We notify the first reported case of lead (Pb) poisoning in a calf from the old mining district of Sierra Madrona and Alcudia Valley (Spain), which appeared in a farm with visible signs of historic mining activity in the surrounding land. The blood Pb level found in this calf was 311 μg/dL, and was associated to several symptoms of clinical Pb pois...
Article
Lead (Pb) is a highly toxic metal that can induce oxidative stress and affect the immune system by modifying the expression of immunomodulator-related genes. The aim of the present study was to investigate the association between Pb exposure and the transcriptional profiles of some cytokines, as well as the relationship between Pb exposure and chan...
Article
Here we study the occurrence of abnormalities on bone tissue composition and turnover mechanisms through the Pb-mediated disruption of vitamins A and D in wild ungulates living in a lead (Pb)-polluted mining area. Red deer (Cervus elaphus) and wild boar (Sus scrofa) from the mining area had significantly higher liver and bone Pb levels than control...
Article
Mercury (Hg) accumulation, transfer, defense mechanism and adverse effects were studied in red deer (Cervus elaphus) and wild boar (Sus scrofa) from the Almadén mining district (Spain), the largest (285,000 t of Hg) and the oldest (more than 2000 years) Hg mine/refining operation site in the world. Red deer (n=168) and wild boar (n=58) liver, kidne...
Article
The effects of Pb pollution on cattle and sheep raised in an ancient mining area were studied through the use of blood Pb (PbB) levels and δ-aminolevulinic acid dehydratase (δ-ALAD) activity. Lead levels in livestock blood from the mining area (n=110) were significantly elevated when compared to the controls (n=79). In 91.4% of cattle (n=58) and 13...
Article
Accumulation of organochlorine compounds is well studied in aquatic food chains whereas little information is available from terrestrial food chains. This study presents data of organochlorine levels in tissue and plasma samples of 15 critically endangered Iberian lynx (Lynx pardinus) and other 55 wild carnivores belonging to five species from thre...
Article
Certain physiologic disorders, attributed to lead (Pb) exposure are related to the generation of oxidative stress. Organisms rely on a complex antioxidant system, composed of endogenously produced compounds such as glutathione (GSH), superoxide dismutase (SOD) and GSH peroxidase (GPX); and dietary antioxidants such as vitamins A and E. The aim of t...
Article
Full-text available
In animals, exposure to metal pollution can induce oxidative stress via several mechanisms. This stress might then cause adverse effects on functions such as male reproductive capacity. Antioxidant vitamins A and E play an important role in maintaining organism functions under stressed conditions. This study assessed the effect of different metals...
Article
Forest and livestock management puts pressure on forests and the wildlife they support. Although many species may be negatively affected by these human activities, the abundance of other species may be promoted, although this has perhaps received less attention in livestock, logging, and conservation management plans. Wild boar and red fox, two com...
Article
Here we study the occurrence of abnormalities on bone tissue composition and turnover mechanisms through the Pb-mediated disruption of vitamins A and D in wild ungulates living in a lead (Pb)-polluted mining area. Red deer (Cervus elaphus) and wild boar (Sus scrofa) from the mining area had significantly higher liver and bone Pb levels than control...
Article
Full-text available
In order to evaluate the effects of nitrates on birds, we have exposed captive red-legged partridges to nitrates concentrations of 0 (control), 100 (dwell water in farming areas) or 500 mg/l (fertirrigation level). The cellular immune response, plasma biochemistry, methemoglobin concentration (metHb), and oxidative stress biomarkers in blood and ti...

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