Esther Garcés

Esther Garcés
Institut de Ciències del Mar · Marine Biology and Oceanography

Ph.D.

About

196
Publications
61,751
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
6,962
Citations
Introduction
I am interested in plankton dynamics in marine systems, particularly noxious and toxic phytoplankton species, their abundance and activity, and the ecosystem effects of their proliferations. This involves the study of the species and the factors that regulate their abundance, mainly the biological ones, and how physical and chemical changes in the marine environment influence these parameters. Here, my group: https://www.icm.csic.es/ca/grup-recerca/processos-biologics-litorals
Additional affiliations
January 2012 - December 2016
Institut de Ciències del Mar
Position
  • Researcher at the Spanish National Research Council
January 2006 - present
Spanish National Research Council
January 2006 - December 2007
Institut de Recerca i Tecnologia Agroalimentàries
Education
January 1994 - April 1998
University of Barcelona
Field of study
  • Marine Biology
September 1988 - June 1993

Publications

Publications (196)
Article
Full-text available
Background Ocean microbes constitute ~ 70% of the marine biomass, are responsible for ~ 50% of the Earth’s primary production and are crucial for global biogeochemical cycles. Marine microbiotas include core taxa that are usually key for ecosystem function. Despite their importance, core marine microbes are relatively unknown, which reflects the la...
Preprint
Zoosporic parasites (i.e. fungi and fungi-like aquatic microorganisms) constitute important drivers of natural populations, causing severe host mortality. Economic impacts of parasitic diseases are notable in the microalgae biotech industry, affecting production of food ingredients, biofuels, pharma- and nutraceuticals. While scientific research on...
Article
The interactions of parasitic fungi with their phytoplankton hosts in the marine environment is mostly unknown. In this study, we evaluated the diversity of Chytridiomycota in phytoplankton communities dominated by dinoflagellates at several coastal locations in the NW Mediterranean Sea and demonstrated the most prominent interactions of these para...
Research
Full-text available
El compromís de l’ICM per la igualtat es va fer singularment palès amb l’aprovació al juny del 2021 del I Pla d’Igualtat de Gènere al centre. Aquesta Guia de comunicació inclusiva i no sexista és un dels resultats de l'aplicació de les mesures previstes en l’esmentat Pla. La Guia pretèn ser un instrument que contribueixi a l’ús de termes i expressi...
Article
Full-text available
The last century has witnessed an increasing rate of new disease emergence across the world leading to permanent loss of biodiversity. Perkinsea is a microeukaryotic parasitic phylum composed of four main lineages of parasitic protists with broad host ranges. Some of them represent major ecological and economical threats because of their geographic...
Chapter
Full-text available
Despite the drive towards equality between women and men in research institutions in recent years and the progress that has been made, there is still a long road ahead. Science is still associated with the male image, and women’s work and contributions are often invisible. Like many other spheres of society, research institutions contribute to the...
Article
The majority of species of the highly diverse genus Chaetoceros are described as chain-forming, although several species are described as strictly solitary (such as C. tenuissimus) or having an alternate solitary and a chain-forming phase during their life history (such as C. salsugineus). In this study, the diversity of small forms of Chaetoceros...
Article
Full-text available
Perkinsea is a phylogenetic group of protists that includes parasites of distantly related hosts. However, its diversity is still mainly composed of environmental sequences, mostly obtained from freshwater environments. Efforts to isolate and culture parasitoids of dinoflagellates have led to the description of several phylogenetically closely rela...
Chapter
Full-text available
A marine hazard is a potentially damaging event, phenomenon or activity in the marine environment that may cause loss of human life, social and economic disruption or environmental degradation. In the last 30 years, natural and human-induced hazards have caused over 1.6 million victims and the economic losses average 300 thousand million dollars pe...
Article
Full-text available
Bacteria display dynamic abundance fluctuations over time in marine environments, where they play key biogeochemical roles. Here, we characterized the seasonal dynamics of marine bacteria in a coastal oligotrophic time series station, tested how similar the temporal niche of closely related taxa is, and what are the environmental parameters modulat...
Poster
Full-text available
The poster explains the experience of the Institut de Ciències del Mar (ICM-CSIC) in the European project Responsible Research in Biosciences (ResBios). The project ResBios is aimed to put Responsible Research and Innovation (RRI) in practice in four institutions, the ICM-CSIC is one of them and is working mainly on 3 RRI aspects: scientific educat...
Article
Full-text available
Many dinoflagellate groups have been overlooked because of their small size compared with their larger counterparts; consequently, little is known about their diversity, distribution, and contribution to the planktonic community. Ansanella is a recently described genus of small marine planktonic dinoflagellates belonging to the order Suessiales. In...
Preprint
Full-text available
Background: Ocean microbes constitute ~70% of the marine biomass, are responsible for ~50% of the Earth's primary production, and are crucial for global biogeochemical cycles. Marine microbiotas include core taxa that are usually key for ecosystem function. Despite their importance, core marine microbes are relatively unknown, which reflects the la...
Article
Parasites in aquatic systems are highly diverse and ubiquitous. In marine environments, parasite‐host interactions contribute substantially to shaping microbial communities, but their nature and complexity remain poorly understood. In this study, we examined the relationship between Perkinsea parasitoids and bloom‐forming dinoflagellate species. Ou...
Preprint
Full-text available
Parasites in aquatic systems are highly diverse and ubiquitous. In marine environments, parasite-host interactions contribute substantially to shaping microbial communities, but their nature and complexity remain poorly understood. In this study, we examined the relationship between Perkinsea parasitoids and bloom-forming dinoflagellate species. Ou...
Article
Many fungi have been identified as pathogens of marine algae. Among them, Chytridiomycota have been revealed as relatively highly abundant, but much of the diversity known within these groups is almost entirely based on environmental sequencing data. Here, we present a novel chytridiomycete genus and species, characterized by light microscopical ob...
Article
Full-text available
This paper presents major gaps and challenges for implementing the UN Decade of Ocean Science for Sustainable Development (2021-2030) in the Mediterranean region. The authors make recommendations on the scientific knowledge needs and codesign actions identified during two consultations, part of the Decade preparatory-phase, framing them in the Medi...
Preprint
Full-text available
Bacteria are highly dynamic in marine environments, where they play key biogeochemical roles. Here, we tested how similar the niche of closely related marine bacteria is and what are the environmental parameters modulating their ecological responses in a coastal oligotrophic time series. We further explored how conserved the niche is at broader tax...
Article
Perkinsea are a group of intracellular protist parasites that inhabit all types of aquatic environments and cause significant population declines of a wide variety of hosts. However, the diversity of this lineage is mostly represented by environmental rDNA sequences. Complete descriptions of Perkinsea that infect marine dinoflagellates have increas...
Article
High-throughput sequencing of microbial assemblages has been proposed as an alternative methodology to the traditional ones used in marine monitoring and environmental assessment. Here, we evaluated pico- and nanoplankton diversity as ecological indicators in NW Mediterranean coastal waters by comparing their diversity in samples subjected to varyi...
Poster
Full-text available
El presente documento recoge las principales conclusiones extraídas a partir de la encuesta del “Impacto del confinamiento”, elaborada desde el Grupo de 1 Trabajo de Igualdad del ICM, durante el periodo en que la población se encontraba en Estado de Alarma debido a la crisis sanitaria provocada por la pandemia del COVID-19, concretamente del 15 al...
Data
El presente documento recoge las principales conclusiones extraídas a partir de la encuesta del “Impacto del confinamiento”, elaborada desde el Grupo de 1 Trabajo de Igualdad del ICM, durante el periodo en que la población se encontraba en Estado de Alarma debido a la crisis sanitaria provocada por la pandemia del COVID-19, concretamente del 15 al...
Article
A recently published study analyzed the phylogenetic relationship between the genera Centrodinium and Alexandrium, confirming an earlier publication showing the genus Alexandrium as paraphyletic. This most recent manuscript retained the genus Alexandrium, introduced a new genus Episemicolon, resurrected two genera, Gessnerium and Protogonyaulax, an...
Article
A recently published study analyzed the phylogenetic relationship between the genera Centrodinium and Alexandrium, confirming an earlier publication showing the genus Alexandrium as paraphyletic. This most recent manuscript retained the genus Alexandrium, introduced a new genus Episemicolon, resurrected two genera, Gessnerium and Protogonyaulax, an...
Article
Full-text available
Human activities on land result in the high-level production of nutrients. When these nutrients reach coastal waters, they could drive the eutrophication process. Here we present the Land Uses Simplified Index (LUSI), an easy-to-use tool for assessing continental pressures on coastal waters. This assessment is done by indirectly estimating continen...
Article
Full-text available
Changes in phytoplankton composition reveal relevant information about the re- sponse of aquatic systems to environmental drivers. Here, we propose the combined use of particle size measurements and pigment signatures to analyze the changes in the composition of phyto- plankton communities at a coastal location. Canonical correlation analysis (CCA)...
Article
Full-text available
During summer, when oligotrophic conditions prevail offshore in the Mediterranean Sea, enhanced phytoplankton stripes are often observed in nearshore waters. In this study, we examine the cross-shore hydrographic variability and the associated microbial plankton communities in this zone. Detailed cross-shore underway sampling at 47 coastal sites sp...
Preprint
Full-text available
Determining predictability in community turnover is a key ecological question. In the microbial world, seasonality has been reported for communities inhabiting temperate zones, but not much is known on seasonality for individual species. Specifically, we have a vague understanding on the amount of species displaying predictability during temporal c...
Data
Maximum likelihood phylogenetic tree inferred from the LSU rDNA phylogeny. Sequences of ciliates served as the outgroup. Sequence of Dinovorax pyriformis obtained in this study is indicated in bold and the shaded area encompasses Parviluciferaceae members. The bootstrap values (BS) and Bayesian posterior probabilities (BPP) are provided at each nod...
Data
Zoospores of Dinovorax pyriformis being released through the germ-tube of the sporangium.
Data
Two days time-lapse of infection development of Dinovorax pyriformis on the dinoflagellate Prorocentrum micans.
Data
Location and date of isolation of Dinovorax pyriformis, Snorkelia sp. and Parvilucifera corolla strains, with a detail of strains used for morphological and ultrastructural observations presented, and the correspondence of genetic sequences obtained.
Article
Full-text available
Parasites are one of the ecologically most relevant groups of marine food webs, but their taxonomic and biological complexity hampers the assessment of their diversity and evolutionary trends. Moreover, the within-host processes that govern parasitoid infection, development and reproduction are often unknown. In this study, we describe a new specie...
Article
Full-text available
Dinoflagellate blooms are natural phenomena that often occur in coastal areas, which in addition to their large number of nutrient-rich sites are characterized by highly restricted hydrodynamics within bays, marinas, enclosed beaches, and harbors. In these areas, massive proliferations of dinoflagellates have harmful effects on humans and the ecosy...
Article
Bysmatrum subsalsum is a cosmopolitan dinoflagellate species that inhabits marine and transitional habitats. Despite its wide distribution, information on the morphological variability, phylogeny and ecology of B. subsalsum is scarce. In this study, we provide morphological and molecular data on B. subsalsum strains and wild cells from different lo...
Article
Recent studies of marine protists have revealed parasites to be key components of marine communities. Here we describe a new species of the parasitoid genus Parvilucifera that was observed infecting the dinoflagellate Durinskia baltica in salt marshes of the Catalan coast (NW Mediterranean). In parallel, the same species was detected after the incu...
Article
Full-text available
Marine environmental monitoring has tended to focus on site-specific methods of investigation. These traditional methods have low spatial and temporal resolution and are relatively labor intensive per unit area/time that they cover. To implement the Marine Strategy Framework Directive (MSFD), European Member States are required to improve marine mo...
Article
Full-text available
Sequencing of rRNA gene polymerase chain reaction amplicons (rRNA tags) is the most common approach for investigating microbial diversity. The recent development of high-throughput sequencing (HTS) technologies has enabled the exploration of microbial biodiversity at an unprecedented scale, greatly expanding our knowledge on the microbiomes of mari...
Article
Full-text available
Marine microbial interactions involving eukaryotes and their parasites play an important role in shaping the structure of phytoplankton communities. These interactions may alter population densities of the main host, which in turn may have consequences for the other concurrent species. The effect generalist parasitoids exert on a community is stron...
Article
Full-text available
Parasites exert important top-down control of their host populations. The host-parasite system formed by Alexandrium minutum (Dinophyceae) and Parvilucifera sinerae (Perkinsozoa) offers an opportunity to advance our knowledge of parasitism in planktonic communities. In this study, DNA extracted from 73 clonal strains of P. sinerae, from 10 differen...
Research
Full-text available
Workshop on Plankton resting stages: ecological, evolutionary and geological perspectives. Tvärminne Zoological Station, Finland. 5-8 October 2015. Planktonic microalgae inhabit freshwater, brackish water and seawater environments and play a key role as phototrophs in the aquatic systems. The life cycles of most microalgal species are complex, wit...
Conference Paper
Full-text available
Planktonic microalgae inhabit freshwater, brackish water and seawater environments and play a key role as phototrophs in the aquatic systems. The life cycles of most microalgal species are complex, with stages characterized by radically different morphologies and highly diverse environmental interactions. The two most common life stages are plankto...
Conference Paper
The innershelf is a transitional, highly variable and productive area being also relevant for the physical, chemical, and biological processes and the transport of nutrients, plankton, and sediment offshore. This region contains well differentiated ecosystems spatially structured as cross-shore gradients. In low energy environments such as many Med...
Conference Paper
Full-text available
In what degree nearshore plankton communities constitute an independent and distinct assemblage from shelf assemblages is a challenging question. Obvious physical and chemical differences exist among both systems but, also, important exchange and interdependencies are depicted by physical forcing. Clues to answer this question can be inferred by an...
Conference Paper
The DPSIR (drivers-pressures-state-impact-responses) framework is used to analyze the causal relationships between environmental and human systems and to report on environmental issues. The effective use of the DPSIR approach requires the accurate assessment of pressures. For coastal waters, although several methods have been evaluated, most of the...
Article
Full-text available
We investigated the species-specific phosphorus (P) nutrition sources in the microphytoplankton community in the Mahon estuary (Minorca, Western Mediterranean) in 2011, under two contrasting hydrographic scenarios. Estuarine flow, nutrient concentrations, phytoplankton community composition and enzyme-labeled fluorescence (ELF) were measured in Jun...
Chapter
Full-text available
The Water Framework Directive (WFD) mandates the use of biological quality element (BQE) phytoplankton to assess the ecological status of coastal and transitional water bodies (WB). Here, we present (i) a critique of the general ecological assumptions of the WFD, (ii) a review of the ecological features of coastal phytoplankton dynamics, (iii) seve...
Article
Full-text available
The diversity and phylogeny of dinoflagellates belonging to the Gymnodiniales were studied during a 3-year period at several coastal stations along the Catalan coast (NW Mediterranean) by combining analyses of their morphological features with rDNA sequencing. This approach resulted in the detection of 59 different morphospecies, 13 of which were o...
Article
The dynamics and consequences of host–parasite coevolution depend on the nature of host genotype-by-parasite genotype interactions (G × G) for host and parasite fitness. G × G with crossing reaction norms can yield cyclic dynamics of allele frequencies (“Red Queen” dynamics) while G × G where the variance among host genotypes differs between parasi...
Article
Full-text available
Environmental 18S rRNA gene surveys of microbial eukaryotes have recently revealed the diversity of major parasitic agents in pelagic freshwater systems, consisting primarily of chytrid fungi. To date, only a few studies have reported the presence of chydrids in the marine environment and a limited number of marine chytrids have been properly ident...
Technical Report
Full-text available
Within the DEVOTES project, a catalogue of existing indicators of marine biodiversity and closely related topics such as non-indigenous species, food-webs, and seafloor integrity (EU Marine Strategy MSFD Descriptors 1, 2, 4, 6) has been established. Currently, the catalogue includes 557 entries with information on metadata ranging from indicator de...
Article
Full-text available
The present study identified and quantified dinoflagellate cysts in surface sediments from three Mediterranean lagoons. Sediment samples were recovered from 11 stations in May 2009 at Cabras Lagoon, eight stations in May 2010 at Corru S'Ittiri Lagoon, and five stations in May 2011 at Santa Giusta Lagoon. Fifty-three dinoflagellate cyst morphotypes...