Laura Ramajo

Laura Ramajo
Centro de Estudios Avanzados en Zonas Áridas | CEAZA · Mar

PhD

About

48
Publications
21,655
Reads
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3,362
Citations
Citations since 2017
26 Research Items
2407 Citations
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Introduction
Since 2019, I am a full researcher at the Center of Advanced Studies in Arid Zones (CEAZA) where I lead a research line that assesses climate change impacts, adaptation and vulnerability. I have a background on Biology (Bsc, 2005, Universidad de Chile, Chile), Ecology (MSc, 2011, Universidad Autónoma de Madrid, Spain), and global change (PhD, 2015, Instituto Mediterráneo de Estudios Avanzados, IMEDEA, CSIC-UIB, 2015, Spain). After my PhD, I had a postdoctoral research position at the Universidad Adolfo Ibáñez (UAI) until 2019. Since 2018, I am an IPCC lead author of the Sixth Assessment Report (AR6) in Working Group II (WGII) (Impacts, Adaptation and Vulnerability) and Regional Chapter #12: Central and South America. I have participated as Chilean Party in two United Nations Framework Convention on Climate Change (UNFCCC) - Conference of the Parties (COPs) (COP20-Peru and COP25-Chile/Spain). Currently, I advise regional and national Chilean Government in climate change issues. My scientific production includes more than 35 scientific contributions in a diversity of peer-reviewed journals and other broader audience outlets. I have also participated in multiple national and international research projects as a Director, Co-Director, PI and Co-I. I am interested in climate change risks and adaptation in multiple natural and human systems creating and applying usable scientific and traditional knowledge that bridge science and policy.
Additional affiliations
January 2021 - present
Center for Climate and Resilience Research
Position
  • Researcher
March 2016 - April 2019
Universidad Adolfo Ibáñez
Position
  • PostDoc Position
May 2014 - present
University Santo Tomás (Chile)
Position
  • Research Associate
Description
  • www.ciicc.cl
Education
September 2012 - July 2015
September 2009 - June 2011
Universidad Autónoma de Madrid
Field of study
  • Ecology
March 2000 - December 2004
University of Chile
Field of study
  • Biology

Publications

Publications (48)
Technical Report
Full-text available
Frente al problema de escasez hídrica forzada por el cambio climático en Chile, particularmente en la zona norte del país, se han instalado plantas desalinizadoras de distintos tamaños, con varias más en proceso de estudio y evaluación. La masificación de esta tecnología nos plantea el desafío de planificar su desarrollo futuro tomando decisiones...
Article
Full-text available
Upwelling of nutrient-rich waters into the sunlit surface layer of the ocean supports high primary productivity in eastern boundary upwelling systems (EBUSs). However, subsurface waters contain not only macronutrients (N, P, Si) but also micronutrients, organic matter and seed microbial communities that may modify the response to macronutrient inpu...
Article
Full-text available
Environment imposes physiological constraints which are life-stage specific as growth-maintenance and/or growth-reproduction energetic requirements are size and volume-dependent. The scallop Argopecten purpuratus, one of the most important bivalve species subjected to fishery and aquaculture along the Humboldt Current System, inhabits spaces affect...
Article
Full-text available
Despite the great importance of gills for bivalve mollusks (respiration, feeding, immunity), the microbiota associated with this tissue has barely been characterized in scallops. The scallop Argopecten purpuratus is an important economic resource that is cultivated in areas where coastal upwelling is intensifying by climate change, potentially affe...
Technical Report
Full-text available
Chile es uno de los cuatro focos mundiales que tienden a desarrollar episodios catastróficos de floraciones algales nocivas (FAN) conocidas comúnmente como marea roja. Las FAN han tenido un incremento en las últimas décadas en nuestro país y se han concentrado en la zona sur-austral, en fiordos y canales de las regiones de Los Lagos, Aysén y Magall...
Chapter
Full-text available
This Cross-Chapter Box highlights the intersecting issues of gender, climate change adaptation, climate justice and transformative pathways. A gender perspective does not centre only on women or men but examines structures, processes and relationships of power between and among groups of men and women and how gender, particularly in its non-binary...
Technical Report
Full-text available
El presente informe presenta la descripción de un total de 36 riesgos en 10 sectores diferentes fueron descritos desde la plataforma ARClim y descritos para la Región de Coquimbo. Adicionalmente, se estimaron valores relativos de riesgo climático y de los factores subyacentes mediante la construcción de 18 nuevas cadenas de impacto de amenazas clim...
Preprint
Full-text available
Upwelling of nutrient rich waters into the sunlit surface layer of the ocean supports high primary productivity in Eastern Boundary Upwelling Systems (EBUS). However, subsurface waters not only contain macronutrients (N, P, Si) but also micronutrients, organic matter, and seed microbial communities that may modify the response to macronutrient inpu...
Article
Full-text available
Climate-related risks in Central and South America have received increased attention and concern in science and policy, but an up-to-date comprehensive review and synthesis of risks and adaptation potential is currently missing. For this paper we evaluated over 200 peer-reviewed articles and grey literature documents published since 2012. We found...
Chapter
Full-text available
https://www.ipcc.ch/report/ar6/wg2/ The chapter is divided in two main sections. The first section follows an integrative approach in which hazards, exposure, vulnerability, impacts and risks are discussed following the eight climatically homogeneous sub-regions described in WGI AR6 (see Figure 12.1). The second section assesses the implemented an...
Chapter
Full-text available
Chapter 12 assesses climate change impacts and risks, vulnerability as well as barriers and options for adaptation and climate resilient development in Central and South America.
Article
Full-text available
The ocean off south-central Chile is subject to seasonal upwelling whose intensity is mainly controlled by the latitudinal migration of the southeast Pacific subtropical anticyclone. During austral spring and summer, the mean flow is equatorward favoring coastal upwelling, but periods of strong southerly winds are intermixed with periods of relaxed...
Article
Full-text available
Laternula elliptica is a key bivalve species and widely distributed around the Antarctic continent. This bivalve has been the study subject in several studies centered on ecological, physiological, biochemical, and behavioral patterns. However, little is known about the chemistry and the biomechanical properties of the shells of this mollusk. Here,...
Article
Full-text available
Penguins dominate the Antarctic avifauna. As key animals in the Antarctic ecosystem, they are monitored to evaluate the ecological status of this pristine and remote region and specifically, they have been used as effective bioindicators suitable for long-term monitoring of metals in the Antarctic environment. However, studies about the role of thi...
Article
Coasts and their marine biota are exposed to major environmental heterogeneity as a consequence of natural drivers and anthropogenic stressors. Here, individuals of the mussel Perumytilus purpuratus from two different geographical populations exposed to contrasting environmental conditions (i.e. estuarine versus open coastal conditions) were used i...
Article
Understanding how marine species cope with the natural environmental variability of their native habitats will provide significant information about their sensitivity to the potential environmental changes driven by climate change. In particular, marine species inhabiting upwelling ecosystems are experiencing low seawater temperatures, as well as,...
Article
Coastal ecosystems influenced by river discharges are subjected to important environmental changes. Understanding how marine biota cope with its environment is relevant in predicting the responses to future conditions imposed by climate change. To date, a large number of studies have addressed the role of pH on shell and biomineralization propertie...
Technical Report
Full-text available
Las Contribuciones Determinadas a nivel Nacional (NDC, por sus siglas en inglés) se han convertido en un instrumento clave para comprometer principalmente metas de mitigación y adaptación al cambio climático. Gestadas en el Acuerdo de París (2015) aspiran a cumplir dos de sus objetivos más ambiciosos: mantener el incremento de la temperatura global...
Book
Full-text available
Únicamente tenemos un solo océano, cubre el 72 % de la superficie terrestre y es esencial para la humanidad. El océano ha permitido que la Tierra sea un planeta habitable y los beneficios que nos brinda en nuestro día a día son numerosos. Sin duda, su rol en el ámbito socioeconómico, climático y ambiental, incluso en zonas alejadas del mar, lo hace...
Article
It is hypothesized that pH fluctuations produced by seagrasses metabolism may confer marine calcifiers resistance to ocean acidification. Here, we tested this thesis by comparing the net population growth rate (NPGR) of a foraminifer species (Rosalina sp.) epiphytic of Mediterranean seagrass (Posidonia oceanica) to average current and projected pH...
Article
Coastal biota is exposed to continuous environmental variability as a consequence of natural and anthropogenic processes. Responding to heterogeneous conditions requires the presence of physiological strategies to cope with the environment. Ecosystems influenced by upwelling endure naturally cold, acidic and hypoxic conditions, nevertheless they su...
Article
Full-text available
In the Brown et al. study ‘Increased food supply mitigates ocean acidification effects on calcification but exacerbates effects on growth’ they show disagreement with the tested hypothesis and data analysis methodology used in our 2016 study. We acknowledge careful criticism and a constructive dialogue are necessary to progress science and address...
Conference Paper
Full-text available
Numerous biogeochemical studies in the Southern Ocean have focused on the importance of trace metals in controlling primary production (e.g. Fe, Co) or as potentially toxic to the ecosystem (e.g. Ag, Cd). However, the reasons why Fe limitation is prevalent in the Southern Ocean or the concentrations of non-biogenic elements in surface waters are hi...
Chapter
Full-text available
The Chilean government is developing a comprehensive climate change policy for fisheries and aquaculture, including institutional, research and capacity building, to reduce vulnerability and improve adaptation in order to make this ecosystem services more resilient to future changes. This is illustrated by several case studies. The occurrence of co...
Article
Full-text available
Under future increased CO2 concentrations, seagrasses are predicted to perform better as a result of increased photosynthesis, but the effects in carbon balance and growth are unclear and remain unexplored for early life stages such as seedlings, which allow plant dispersal and provide the potential for adaptation under changing environmental condi...
Article
Environmental gradients play an important role in shaping geographic variability in coastal marine populations. Thus, the ability of organisms to cope with these changes will depend on their potential to acclimatize, or adapt, to these new environmental conditions. In this study, we investigate the spatial variability in biological responses shown...
Article
Full-text available
Invasion of ocean surface waters by anthropogenic CO2 emitted to the atmosphere is expected to reduce surface seawater pH to 7.8 by the end of this century compromising marine calcifiers. A broad range of biological and mineralogical mechanisms allow marine calcifiers to cope with ocean acidification, however these mechanisms are energetically dema...
Data
Future ocean acidification (OA) will affect physiological traits of marine species, with calcifying species being particularly vulnerable. As OA entails high energy demands, particularly during the rapid juvenile growth phase, food supply may play a key role in the response of marine organisms to OA. We experimentally evaluated the role of food sup...
Article
Future ocean acidification (OA) will affect physiological traits of marine species, with calcifying species being particularly vulnerable. As OA entails high energy demands, particularly during the rapid juvenile growth phase, food supply may play a key role in the response of marine organisms to OA. We experimentally evaluated the role of food sup...
Article
Full-text available
Ocean acidification (OA) and hypoxic events are an increasing worldwide problem, but the synergetic effects of these factors are seldom explored. However, this synergetic occurrence of stressors is prevalent. The coastline of Chile not only suffers from coastal hypoxia but the cold, oxygen-poor waters in upwelling events are also supersaturated in...
Article
Along the west coast of South America, from the tropical zone to the Patagonian waters, there is a significant latitudinal gradient in seawater temperature, salinity and carbonate chemistry. These physical–chemical changes in seawater induce morphological and physiological responses in calcifying organisms, which may alter their energy budget and c...
Article
Full-text available
Macrophytes growing in shallow coastal zones characterised by intense metabolic activity have the capacity to modify pH within their canopy and beyond. We observed diel pH changes in shallow (5–12 m) seagrass (Posidonia oceanica) meadows spanning 0.06 pH units in September to 0.24 units in June. The carbonate system (pH, DIC, and aragonite saturati...
Data
Macrophytes growing in shallow coastal zones characterised by intense metabolic activity have the capacity to modify pH within their canopy and beyond. We observed diel pH changes in shallow (5-12 m) seagrass (Posidonia oceanica) meadows spanning 0.06 pH units in September to 0.24 units in June. The carbonate system (pH, DIC, and aragonite saturati...
Article
Full-text available
Macrophytes growing in shallow coastal zones characterized by intense metabolic ac- tivity have the capacity to modify pH within their canopy and beyond.We observed diel pH ranges is in shallow (5–12m) seagrass (Posidonia oceanica) meadows from 0.06 pH units in September to 0.24 units in June. The carbonate system (pH, DIC, and aragonite saturation...
Article
Full-text available
Changes in phenotypic traits, such as mollusc shells, are indicative of variations in selective pressure along environmental gradients. Recently, increased sea surface temperature (SST) and ocean acidification (OA) due to increased levels of carbon dioxide in the seawater have been described as selective agents that may affect the biological proces...
Article
Full-text available
Ocean acidification due to anthropogenic CO2 emissions is a dominant driver of long-term changes in pH in the open ocean, raising concern for the future of calcifying organisms, many of which are present in coastal habitats. However, changes in pH in coastal ecosystems result from a multitude of drivers, including impacts from watershed processes,...
Article
Full-text available
Ocean acidification represents a threat to marine species worldwide, and forecasting the ecological impacts of acidification is a high priority for science, management, and policy. As research on the topic expands at an exponential rate, a comprehensive understanding of the variability in organisms' responses and corresponding levels of certainty i...
Article
Full-text available
Este estudio muestra los resultados del análisis taxonómico, el patrón batimétrico y espacial en abundancia y riqueza de especies de los moluscos bentónicos, realizado en el año 2006 por el crucero CIMAR 12 Fiordos. Las muestras fueron obtenidas entre el estero Reloncaví (41º 33¿S) y boca del Guafo (43º 49¿ S), mediante una rastra Agazzis y box-cor...
Article
Publicación ISI Email : cosorio@uchile.cl; laura.ramajo@gmail.com The present study describes new records for the buccinid gastropods Aeneator fontainei (D'Orbigny, 1841) and Aeneator loisae Redher, 1971 collected in Chile's southern fjord region in 2001 and 2002. This report now extends the distribution of these species to 46 degrees S. Observatio...
Article
Full-text available
During the CIMAR 8 Fjords cruise on July 2002 (43 o -45 o S), 52 taxa of molluscs were found. Gastropods and bivalves were dominant. Eight species represent new geographical record for the area: Nuculana cuneata, Semirossia patagonica, Calyptraea decipiens, Trophon acanthodes, Trophon veronicae, Aeneator (Ellicae) loisae, Drillia janseni y Mangelia...
Article
Full-text available
En el análisis de las muestras biológicas del crucero CIMAR 8 Fiordos realizado en julio de 2002 (43o- 45o S), se determinó la presencia de 52 taxas de moluscos, mostrándose un claro predominio de las Clases Gastrópoda y Bivalvia. El bivalvo: Nuculana cuneata, el cefalópodo: Semirossia patagonica, y los gastrópodos: Calyptraea decipiens, Trophon ac...

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Projects

Projects (3)
Project
CLAP general objective is to improve predictive capabilities of the sensitivity of the Coquimbo region socio-ecological system to climate change. It aims to generate local to mesoscale predictions of future climate change effects in the Coquimbo region by advancing current observational and modeling capabilities in geophysics (land-ocean- atmosphere) and ecology (marine and terrestrial). The integrated understanding of the bio-geophysical system will be used to predict coupled responses (ecological-evolutionary and socio-economic) to climate from a holistic approach taking the ocean-atmosphere processes as the main drivers of the pressure on the system. CLAP aims to fill knowledge gaps necessary to deliver science-based products for addressing the impacts of climate variability on targeted ecosystem services (ES). These ES are fish stocks and landing, aquaculture production, tourism and recreation, moderation of extreme events, carbon sequestration in the context of the sustainability and the carbon neutrality by assisting Chile to meet national and international compromises.
Project
This project tries to assess the role of upwelling in an ecological- evolutionary context under the perspective of global change, and more especially under the upwelling intensification projections. This proposal aims to study the environmental effects of one of the major active upwelling centers of the northern Chilean coast (Punta Lengua de Vaca, PLV) affecting Tongoy Bay, the main aquaculture center dedicated to the culture of the northern scallop Argopecten purpuratus.
Project
The aim of PIMETAN is to characterize the trace metal composition, biochemical behavior, bioavailability and toxicity of guano from the three most abundant penguins species living in Antarctica (the Chinstrap: Pygoscelis antarctica, Adélie: Pygoscelis adeliae and Papua: Pygoscelis papua). The proposed work will include sampling campaigns at Deception and Livingston Islands, together with samples collected at different Antarctic regions in collaboration with international research groups. The proposed work is unprecedented in terms of the potential impact on a better knowledge of the biogeochemical cycle of trace metals in the Southern Ocean. http://pimetan.csic.es/