Jose Miguel Sandoval-Gil- PhD Marine Sciences
- Researcher at Autonomous University of Baja California
Jose Miguel Sandoval-Gil
- PhD Marine Sciences
- Researcher at Autonomous University of Baja California
Marine Botany Research Group
University of Baja California
Instituto de Investigaciones Oceanológicas)
About
61
Publications
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Introduction
I am a researcher at the Instituto de Investigaciones Oceanológicas (IIO) of the Universidad Autónoma de Baja California (UABC). My research interests include a wide range of topics about the ecology/biology/ecophysiology of submerged marine vegetation (seagrasses and seaweeds): human and natural impacts, population dynamics, interaction with invasive species, effects of climate change (e.g. temperature stress), acclimation responses to emersion of intertidal species.
Current institution
Additional affiliations
January 2017 - present
November 2015 - December 2016
September 2013 - September 2015
Publications
Publications (61)
The kelps Eisenia arborea, Macrocystis pyrifera, and Pterygophora californica are foundation species in the Eastern North Pacific, with their latitudinal limits extending to the Baja California peninsula (Mexico). In comparison to the other species, E. arborea exhibits a higher level of thermo-tolerance. This is attributable to the fact that its so...
Sulfated flavonoids, a class of polyphenols integral to plant secondary metabolism and chemical defense, exhibit notable pharmacological potential. Seagrasses, marine angiosperms with critical ecological and socioeconomic roles, often accumulate these compounds in high concentrations. However, their complex chemical profiles�including closely relat...
Suspended oysters employ physiological strategies to adjust their metabolic needs with the available food resources. Using the biodeposition method, the feeding and processing behavior of Pacific oysters (Crassostrea gigas) was investigated with a field study comparing four periods (May, July, October, and December 2016) with different upwelling in...
Kelp communities are experiencing exacerbated heat‐related impacts from more intense, frequent, and deeper marine heatwaves (MHWs), imperiling the long‐term survival of kelp forests in the climate change scenario. The occurrence of deep thermal anomalies is of critical importance, as elevated temperatures can impact kelp populations across their en...
The surfgrass Phyllospadix scouleri grows in highly productive meadows along the Pacific coast of North America. This region has experienced increasingly severe marine heatwaves (MHWs) in recent years. Our study evaluated the impact of consecutive MHWs, simulated in mesocosms, on essential ecophysiological features of P. scouleri. Overall, our find...
Suspended oysters employ physiological strategies to adjust their metabolic needs with the available food resources. Using the biodeposition method, the feeding and processing behavior of Pacific oysters (Crassostrea gigas) was investigated with a field study comparing four periods (May, July, October, and December 2016) with different upwelling in...
![Figure 1. Carbon (C) concentration (% dry weight [DW]), nitrogen (N)...](publication/371189925/figure/fig1/AS:11431281164161477@1685639845535/Carbon-C-concentration-dry-weight-DW-nitrogen-N-concentration-DW-and-the_Q320.jpg)
The effects of temperature, irradiance, and other environmental variables on photosynthesis in seagrasses are well understood. However, little information is available regarding the effects of the nitrate concentration in seawater on the photosynthetic characteristics of marine vegetation. Thus, the aim of this study was to determine the effect of...
Climate change is influencing the performance and distribution of macroalgae in the marine environment. Although intertidal seaweeds successfully adapt to extreme and rapid abiotic changes, exposure to persistent or prolonged potentially stressful conditions can affect their vitality and productivity. Rapid glacial melt can severely alter seawater...
The spread of non-indigenous and invasive seaweeds has increased worldwide, and their potential effects on native seaweeds has raised concern. Undaria pinnatifida is considered among the most prolific non-indigenous species. This species has expanded rapidly in the Northeast Pacific, overlapping with native communities, such as the iconic giant kel...
In coastal lagoons, marine benthic macrophyte meadows can be an important element in the resistance to eutrophication of the ecosystem, as they can function as temporary nitrogen sinks, limiting the availability of this nutrient for opportunistic organisms. The role of nitrogen sinks for two dominant macrophyte species of Mediterranean coastal lago...
The surfgrass Phyllospadix scouleri constitutes highly productive meadows along the Pacific coast of North America – a region that has been increasingly affected by severe marine heatwaves (MHWs) in recent years. Our study assessed the effects of consecutive MHWs simulated in mesocosms on critical ecophysiological descriptors of P. scouleri. Genera...
Human- and nature-induced hypersaline conditions in coastal systems can lead to profound alterations of the structure and vitality of seagrass meadows and their socio-ecological benefits. In the last two decades, recent research efforts (>50 publications) have contributed significantly to unravel the physiological basis underlying the seagrass–hype...
Eisenia arborea (sensu Ecklonia arborea) is the kelp with the greatest latitudinal distribution on the Northeastern Pacific Coast. It is harvested in Mexico in small amounts for abalone farm fodder and occasionally exported to Asia for human consumption. Because the high-energy environment where it naturally grows limits its sustainable harvest, we...
Intertidal seagrasses are subjected to desiccation and direct solar radiation during low tides. It is assumed that the canopy structure can self-protect the underlying shoots during these events, although there is no evidence on a physiological basis. The physiological responses of the surfgrass Phyllospadix torreyi were examined when emerged durin...
This study aimed to elucidate for the first time the combined effects of marine heatwaves (MHWs) and light limitation simulated in mesocosm on critical physiological descriptors of the surfgrass Phyllospadix torreyi, which constitutes highly productive meadows along the intertidal and subtidal rocky shores of the Pacific coast of North America. Our...
Land based intensive cultivation systems have been proposed as an ideal option for the commercial production of high value products from seaweeds. However, many cultures on Ulva and other seaweeds are based on relatively small-scale facilities. The high variability of culture conditions can strongly affect the physiological performance of seaweeds,...
The frequency of marine heatwaves (MHWs) is increasing due to climate change. Although seaweeds are resilient to environmental changes, an increasing body of evidence shows that rising sea surface temperatures have deleterious effects on temperate kelp species. However, information on the vulnerability of juvenile kelp to these stressors and their...
Vegetated coastal ecosystems have an important role as contaminant filters. Temporal variations in concentrations, enrichment factors (EF), and fluxes of trace elements (As, Cd, Co, Cr, Cu, Ni, Pb, V, and Zn) were evaluated in ²¹⁰Pb-dated sediment cores from salt marsh and seagrass ecosystems at San Quintín Bay (Mexican northern Pacific). Trace ele...
The many nutritional benefits reported in seaweeds have increased their demand in the western world for human consumption. In order to supply this demand, it is necessary to cultivate seaweeds both offshore and onshore. Offshore cultivation is highly vulnerable to climate variation. Cultures on land can be operated while essential variables can be...
The toxic potential of Chattonella is associated with a high production of reactive oxygen species (ROS). Chattonella species can tolerate high irradiance levels but seems not to be efficient in the induction of nonphotochemical chl a fluorescence (NPQ) under light stress conditions. Therefore, we postulated that high ROS production of this microal...
The toxic potential of Chattonella is associated with a high production of reactive oxygen species (ROS). Chattonella species can tolerate high irradiance levels but seems not to be efficient in the induction of nonphotochemical chl a fluorescence (NPQ) under light stress conditions. Therefore, we postulated that high ROS production of this microal...
Blue carbon (BC) ecosystems provide important and multiple ecosystem services, including climate change mitigation through carbon storage. However, these ecosystems are under the pressure of numerous anthropogenic stressors, such as population growth and industrialization, which jeopardize the benefits they provide. Although the common methodology...
Due to climate change, the incidence of marine heat waves (MHWs) has increased, yet their effects on seaweeds are still not well understood. Adult sporophytes of Macrocystis pyrifera, the species forming the iconic Giant Kelp forests, can be negatively affected by thermal stress and associated environmental factors (e.g., nutrient depletion, light...
This study was designed to understand better if and how juvenile sporophytes of Macrocystis pyrifera can photoacclimate to high-light conditions when transplanted from 10 to 3 meters over seven days. Acclimation of adult sporophytes to light regimes in the bathymetric gradient has been extensively documented. It primarily depends on photoacclimatio...
The invasive seaweed Caulerpa cylindracea has shown a reduced ability to invade healthy Posidonia oceanica meadows by penetrating only meadow margins in early invasion stages in the western Mediterranean Sea. However, the long-term interaction with invasive seaweed could deteriorate the structure of meadows by diminishing their initial resistance t...
El papel de las praderas de pastos marinos en el
contexto del cambio climático se considera primordial,
debido a sus elevadas tasas de secuestro de carbono
en el océano (48-112 Tg C año-1) incluyendo material
alóctono (Kennedy et al., 2010). Pese a su baja
representatividad espacial (0.1% de la superficie del
planeta), la capacidad anual de secuest...
El papel de las praderas de pastos marinos en el
contexto del cambio climático se considera primordial,
debido a sus elevadas tasas de secuestro de carbono
en el océano (48-112 Tg C año-1) incluyendo material
alóctono. Pese a su baja
representatividad espacial (0.1% de la superficie del
planeta), la capacidad anual de secuestro de carbono
(C) es de...
In shallow coastal ecosystems, as for example coastal lagoons, macrophytes account for high biomasses and productivity (Sand-Jensen 1975, Viaroli et al. 1996) being able to play a major role in the biogeochemical cycles of nutrients (Romero et al. 2006, Touchette and Burkholder 2000). When strong inputs of nutrients occur, due to natural and/or ant...
Coastal vegetated ecosystems constitute very productive habitats, characterized by efficient C org sequestration and long-term preservation in sediments, so they play an important role in climate change mitigation. The temporal evolution of C org content, stocks and burial rates were evaluated in seagrass and salt marsh habitats in San Quintin Bay...
Prolonged nitrogen (N) fertilization can impact seagrass survival and productivity; however, the effects of N enrichment pulses (e.g., upwelling or sediment resuspension) remain poorly understood. This study examined the effects of short-term (1 h) pulsing of nitrate (NO3⁻) enrichment, simulating an upwelling event, on dissolved inorganic carbon (D...
Dinitrogen (N2) fixation rates were determined in the phyllosphere and in sediments with and without the presence of eelgrass (Zostera marina) in San Quintín Bay, an upwelling-influenced coastal lagoon in the NE Pacific. Samples were collected during winter 2015 at 4 sites with a gradient of oceanic influence and contrasting impact from oyster aqua...
The Mediterranean endemic seagrass Posidonia oceanica is generally regarded as a stenohaline species, highly sensitive to salinity increments; however, in a few particular cases, natural populations can grow under salinity levels above its normal threshold of tolerance. One such case is a population of P. oceanica in the southeastern coastal region...
The present study examines the temporal variability of air–water CO2 fluxes (FCO2) and seawater carbonate chemistry in a Baja California coastal lagoon during an exceptionally warm anomaly that was developed in Northeast Pacific coasts during 2014. This oceanographic condition led to a summer-like season (weak upwelling condition) during the study...
Oyster farming in estuaries and coastal lagoons frequently overlaps with the distribution of seagrass meadows, yet there are few studies on how this aquaculture practice affects seagrass physiology. We compared in situ nitrogen uptake and the productivity of Zostera marina shoots growing near off-bottom longlines and at a site not affected by oyste...
Shellfish aquaculture is prominent in many coastal and estuarine environments and has both ecological and economic impacts. Bahía San Quintín is a reverse estuary in Baja California, Mexico, where Pacific oysters (Crassostrea gigas) are cultivated. While oysters likely feed heavily on phytoplankton especially during upwelling periods, we hypothesiz...
Posidonia oceanica seagrass meadows are one of most resistant Mediterranean habitats to invasion by the green alga Caulerpa cylindracea. We evaluated the hypothesis that light reduction caused by the seagrass canopy can limit algal photosynthesis and growth and hence potentially explain this resistance. To this end, we analysed light regimes and C....
Applying proteomics, we tested the physiological responses of the euryhaline seagrass Cymodocea nodosa to deliberate manipulation of salinity in a mesocosm system. Plants were subjected to a chronic hypersaline condition (43 psu) to compare protein expression and plant photochemistry responses after 15 and 30 days of exposure with those of plants c...
The green alga Caulerpa cylindracea has rapidly spread throughout the Western Mediterranean during the last 20 years. Compared with other native benthic communities, Posidonia oceanica meadows seems to be highly resistant to the colonization by the alga. Nonetheless, it is suggested that in the long-term C. cylindracea could affect the seagrass alt...
The green alga Caulerpa cylindracea has rapidly spread throughout the Western Mediterranean during the last 20 years. Compared with other native benthic communities, Posidonia oceanica meadows seems to be highly resistant to the colonization by the alga. Nonetheless, it is suggested that in the long-term C. cylindracea could affect the seagrass alt...
Changes in plant water relations and ionic homoeostasis can determine plant osmoacclimation and tolerance to hypersaline stress. In this study, we examined the role of ion accumulation in short-term osmotic acclimation capacities of two Mediterranean seagrass species (Posidonia oceanica and Cymodocea nodosa) with differentiated ranges of salinity t...
This work represents the first contribution to (i) examine the changes in plant-water relations of an inter-tidal seagrass during air exposure (Zostera noltii), and (ii) compare the water status descriptors between inter-tidal- and subtidal-adapted species (Cymodocea nodosa, Zostera marina). Two different morphotypes of Z. noltii that develop in th...
This work represents the first contribution to (i) examine the changes in plant-water relations of an inter-tidal seagrass during air exposure (Zostera noltii), and (ii) compare the water status descriptors between inter-tidal-and subtidal-adapted species (Cymodocea nodosa, Zostera marina). Two different morpho-types of Z. noltii that develop in th...
In the present study, we investigated the capacity for non-radiative energy dissipation operated by thexanthophyll cycle pigments of the Mediterranean seagrasses Posidonia oceanica and Cymodocea nodosa,under normal and increased salinity conditions. After being chronically stressed by hypersalinity duringseveral months in a mesocosm system, the eff...
There are major concerns in the Mediterranean Sea over the effects of hypersaline effluents from
seawater desalination plants on seagrass communities. However, knowledge concerning the specific
physiological capacities of seagrasses to tolerate or resist salinity increases is still limited. In this study,
changes in the photosynthetic characteristi...
The present study examines for the first time the effects of increased salinity on water relations and osmolyte (carbohydrates and amino acids) concentrations in two Mediterranean seagrass species, Posidonia oceanica and Cymodocea nodosa, which are adapted to growth in environments with contrasting salinity and have a known differential sensitivity...
The photosynthetic plasticity of the invasive green alga Caulerpa racemosa v. cylindracea (hereafter C. racemosa) has been proposed as a relevant mechanism determining its successful performance on Mediterranean benthic assemblages over broad depth gradients. In the present study, the photosynthetic performance of C. racemosa was evaluated through...
Spread of the invasive alga Caulerpa racemosa var. cylindracea (Caulerpales, Chlorophyta) along the
Mediterranean Coast of the Murcia region (SE Spain).— The aim of this paper was to document the appearance
and spread of the green alga Caulerpa racemosa along the coast of Murcia in south–eastern Spain.
It was found for the first time in the area in...
Export Date: 21 February 2013, Source: Scopus
The dominant Mediterranean seagrass Posidonia ocea-nica inhabits sublittoral environments with very stable salinity regimes; the species is considered highly sensi-tive to even moderate increases in salinity caused by hypersaline effluents (brine) from desalination plants. We analysed the effect of salinity increase on seagrass vitality and surviva...
Questions
Questions (5)
Can I apply a non-parametric Kruskal Wallis test instead of a two-way ANOVA when assumptions of normality and heterocedasticity are not met?
Hi, I would appreciate some help
Hi! we are doing some measurements about the DPPH radical scavenging activity of seaweed extracts. We know that the main units used to express this activity are in %. But we have different sample weights for the same extractant volume (MetOH), and thus we need to normalize per sample weight. Somebody knows if is it correct to express the units as [% activity mg-1 DW] ?? any other suggestion?
thanks in advance
Hi!
We are trying to estimate lipid peroxidation in leaf tissues of the seagrass Phyllospadix torreyi, following the protocol from Hodges et al. 1999. But this protocol does not work (i.e. we do not obtain the characteristic pinkish-red chromagen). This is so weird, because we have used this protocol with other seagrass species and land plants, and it always worked in the past!. Furthermore, at the same time, we are using the same protocol and reactives for seaweeds in our lab, and we are obtaining fantastic results. Could anybody kindly provide me any explanation or could suggest some modification for this protocol? Thank you very much!
In few works I've found values between 1-4 mg/ml, but I'm not sure.
