Papers by Macarena Marambio
Este recurso forma parte de la iniciativa "El Oceano en casa - L'Oceà a casa" del I... more Este recurso forma parte de la iniciativa "El Oceano en casa - L'Oceà a casa" del Institut de Ciències del Mar (ICM-CSIC), un blog que recopila contenidos y recursos, variados y prácticos, para que los más pequeños y pequeñas de la casa descubran los secretos del Océano desde casa. Se desarrolló entre el 27 de marzo y el 17 de abril de 2020, durante el confinamiento por la crisis COVID-19[ES] En esta entrada del blog “El Océano en Casa” se explica qué son las medusas y diferentes aspectos de ellas (morfología, mecanismo detrás de sus picaduras, causas de proliferaciones, etc.). [...] Cuando llega el verano y hace calor, a menudo vamos a la playa para bañarnos en agua fresca, pero ¡sorpresa! A veces nos encontramos que hay una bandera ondeando que indica la presencia de medusas. Quizás incluso en alguna ocasión has sufrido la picada de una medusa. Pero, ¿sabemos qué es una medusa? ¿Y por qué pican a las personas? ¿Qué sabemos de estos animales? Si quieres saber más, ¡te...
Toxins
The jellyfish species that inhabit the Mediterranean coastal waters are not lethal, but their sti... more The jellyfish species that inhabit the Mediterranean coastal waters are not lethal, but their stings can cause severe pain and systemic effects that pose a health risk to humans. Despite the frequent occurrence of jellyfish stings, currently no consensus exists among the scientific community regarding the most appropriate first-aid protocol. Over the years, several different rinse solutions have been proposed. Vinegar, or acetic acid, is one of the most established of these solutions, with efficacy data published. We investigated the effect of vinegar and seawater on the nematocyst discharge process in two species representative of the Mediterranean region: Pelagia noctiluca (Scyphozoa) and Carybdea marsupialis (Cubozoa), by means of (1) direct observation of nematocyst discharge on light microscopy (tentacle solution assay) and (2) quantification of hemolytic area (tentacle skin blood agarose assay). In both species, nematocyst discharge was not stimulated by seawater, which was cl...
Picaduras de medusas y otros animales marinos venenosos: Su impacto en la actividad de los socorristas de playa
Emergencias, 2017
Mitigation tools for jellyfish impact in coastal area through collaborative citizen science approach
Aquatic Sciences Meeting, Aquatic Sciences: Global And Regional Perspectives - North Meets South,... more Aquatic Sciences Meeting, Aquatic Sciences: Global And Regional Perspectives - North Meets South, 22-27 February 2015, Granada, SpainDuring the last years, jellyfish proliferations have been a common topic in coastal areas mainly due to the socio-economic impacts associated. Developing mitigation tools is one way of reducing this impact and we believe that information is a strong countermeasure against this problem. In the framework of the Med-Jellyrisk Project, the MEDJELLY mobile application, available for Spain, Malta and Tunisia, is working daily during the summer season to provide citizens real-time information about jellyfish presence in coastal areas. In the Catalan coast (Spain), this mobile App works within a collaborative citizen science approach, involving coastal municipalities and administrations through a jellyfish observation network formed by trained personnel from the Rescue Services of 260 beaches. Volunteers collect the information about presence of jellyfish, together with flag status and some environmental parameters every morning, which is validated by jellyfish experts and posted daily in the application. Results showed that this kind of tools are nicely welcome among society as a way of providing users a useful tool against jellyfish outbreaks and volunteers participation being rewarded by public information feedback on jellyfish awarenessPeer Reviewe
Piraino, Stefano ... et. al.-- 5th International Jellyfish Bloom Symposium, 30 May to 3 June 2016... more Piraino, Stefano ... et. al.-- 5th International Jellyfish Bloom Symposium, 30 May to 3 June 2016, Barcelona.-- 1 page
Working with live jelly sh: a challenge during the last eight years JBS-12 / Oral Presentation_09... more Working with live jelly sh: a challenge during the last eight years JBS-12 / Oral Presentation_09 Jelly sh are fragile and poorly understood but amazing marine animals. Trying to create adequate technics to keep them alive and in good conditions in aquaria represents a great challenge. Moreover the interest for culture these animals has been signi cantly increasing in the last decades. Growing techniques with a scienti c purpose are improving and in continuous evolution but private enterprises, as exhibition aquariums, have demonstrated an interest in maintaining jelly sh in tanks. Since 2007, the "Medusa" group of Barcelona dedicates a large part of his research to study some species of interest in captivity. Different aquaria and experimental setups have been developed in order to conduct experiments and to better understand their life cycles. Due to the location of the Marine Science Institute (Barcelona, next to the beach with direct access to the sea water) and also to the ability to build and to modify every part of the aquariums manually, we can integrate the knowledge learned during the years to adapt them depending on the needs of the animal´s biology or the experiment. This has allowed us to developed collaboration projects with research institutions and private companies. In this presentation we would like to share some of the challenges were faced and how we solved in order to stimulate future collaborations.
Different approaches have been developed with the aim of mitigate the impact of jelly sh blooms i... more Different approaches have been developed with the aim of mitigate the impact of jelly sh blooms in coastal areas. These include warning ags, specialized anti-jelly sh nets and, to a much lower extent, risk maps for jelly sh blooms. The Medjellyrisk Project (www.jellyrisk. eu) aimed to create a western and central Mediterranean Basin forecasting platform. An integrated Collaborative Citizen Science approach has combined abundance data on stranded individuals of jelly sh and those recorded in coastal waters from four different Mediterranean countries (Spain, Italy, Tunisia and Malta) in a single database. The aim of this work is to create a forecasting platform where the probability of a jelly sh bloom arising can be foreseen. Stranded and near-to-coast jelly sh presence data was processed using a Species Distribution Model (SDM) approach, where different correlative and classi cation models were tted on the abundance data so as to create an ensemble of predictions. Different water environmental variables were used as explanatory variables, depending of the spatial location and jelly sh species of concern. Those spatially-explicit predictions were then projected in time using data from the MyOcean program (). Jelly sh presence data as well as the forecasted probability of a jelly sh bloom arising was communicated to the general public through the free-download mobile App (iMedjelly) and from the project's webpage ( sh-presence-forecasting-selector), providing citizens with up-to-date and validated information. In this way, this project reacted to the large demand by different beach users, stakeholders and institutions for such management tools within bathing areas.
Role of citizen science in jellyfish research and management: the Medjellyrisk project´s approach
Aquatic Sciences Meeting, Aquatic Sciences: Global And Regional Perspectives - North Meets South,... more Aquatic Sciences Meeting, Aquatic Sciences: Global And Regional Perspectives - North Meets South, 22-27 February 2015, Granada, SpainJellyfish interactions with human activities are manifold, but gelatinous blooms have always a negative feel to most people. Much research effort is currently devoted to addressing jellyfish population dynamics and the development of forecasting and mitigation tools. However, the lack of long-term and spatial-wide data series represents a key impediment. In the framework of the Med-Jellyrisk Project (www.jellyrisk.eu), a Citizen Science approach is sustaining a prolonged database on Mediterranean jellyfish records to support the development of mitigation tools, e.g. forecasting or risk maps. Several initiatives are required for promoting engagement and interaction with local communities, validating the data, and improving the observation network both in the amount and the quality of observations. As a case study, we present here the most important achievements obtained in the Catalan coast (Spain), together with a general overview of other national initiatives in the Mediterranean Sea and in the rest of the worldPeer Reviewe
Adaptive strategies of the invader mnemiopsis leidyi in the Eurasian Seas
Guía de identificación y tratamiento de picaduras de medusas y otros organismos gelatinosos de la costa mediterránea española
Forecasting jellyfish blooms along the Catalan Coast: a citizen science-based model and an on-line app to pay it forward
Aquatic Sciences Meeting, Aquatic Sciences: Global And Regional Perspectives - North Meets South,... more Aquatic Sciences Meeting, Aquatic Sciences: Global And Regional Perspectives - North Meets South, 22-27 February 2015, Granada, SpainThe sensitivity and specificity of the Mediterranean Sea to climate change and other human-related stressors have been unequivocally documented in recent years by a significant increase in the number and frequency of jellyfish outbreaks. To evaluate medium-term arrivals of jellyfish along the Catalan coast and in association with the Catalan Water Agency and the Rescue Services, people were trained to underwrite a citizen science-based monitoring program that has been carried out since 2007 to date. The main objective was to evaluate the presence of jellyfish along the Catalan coast from May to September with daily sampling along 243 beaches. Data from 2007 until 2013 was analyzed in association with several environmental variables to develop ensemble distribution models for two of the most common scyphozoan species (Pelagia noctiluca and Rhizostoma pulmo). Those spatially-explicit models were projected in time using data from the MyOcean program (http://www.myocean.eu/). Forecasted distribution of jellyfish along the coast was made available to the general public through the free-download mobile App (iMedJelly), providing citizens with up-to-date and validated information about real and forecasted distribution of jellyfish along the Catalan coastPeer Reviewe
Seawatchers.org is a citizen science platform that aims to involve society in data collection for... more Seawatchers.org is a citizen science platform that aims to involve society in data collection for different marine research projects. It started in 2012 as a pilot in the Catalan region and evolved in 2014 to collect data from the whole Spanish coast. As part of this platform, the Jelly sh project seeks a better understanding of jelly sh population dynamics and it reached more than 600 records in 2 years. It collects data from swimmers, divers, kayakers and other volunteers. Unlike citizen science campaigns based on mailings, this platform displays both the collected data and the name of volunteers or associations involved. Behind the Project, experts validate data and are responsible for highlighting the most interesting observations for research. All participants receive feedback concerning the validation from the expert, its comments and whether the observation is a remarkable one. The collected data during more than 10 years by the Catalan municipalities and those from the App M...
Diversity, 2021
Science is addressing global societal challenges, and due to limitations in research financing, s... more Science is addressing global societal challenges, and due to limitations in research financing, scientists are turning to the public at large to jointly tackle specific environmental issues. Citizens are therefore increasingly involved in monitoring programs, appointed as citizen scientists with potential to delivering key data at near to no cost to address environmental challenges, therein fostering scientific knowledge and advising policy- and decision-makers. One of the first and most successful examples of marine citizen science in the Mediterranean is represented by the integrative and collaborative implementation of several jellyfish-spotting campaigns in Italy, Spain, Malta, and Tunisia starting in 2009. Altogether, in terms of time coverage, geographic extent, and number of citizen records, these represent the most effective marine citizen science campaigns thus far implemented in the Mediterranean Sea. Here, we analyzed a collective database merging records over the above f...
Marine Environmental Research, 2019
This is a PDF file of an article that has undergone enhancements after acceptance, such as the ad... more This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its final form, but we are providing this version to give early visibility of the article. Please note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.
Global Ecology and Biogeography, 2018
Aim: Invasive species are of increasing global concern. Nevertheless, the mechanisms driving furt... more Aim: Invasive species are of increasing global concern. Nevertheless, the mechanisms driving further distribution after the initial establishment of non-native species remain largely unresolved, especially in marine systems. Ocean currents can be a major driver governing range occupancy, but this has not been accounted for in most invasion ecology studies so far. We investigate how well initial establishment areas are interconnected to later occupancy regions to test for the potential role of ocean currents driving secondary spread dynamics in order to infer invasion corridors and the source-sink dynamics of a non-native holoplanktonic biological probe species on a continental scale. Location: Western Eurasia.
[Stings from jellyfish and other venomous marine life: impact on beach lifeguard services]
Emergencias : revista de la Sociedad Espanola de Medicina de Emergencias
2 pages, 1 tablePeer Reviewe
Alimentación del ctenóforo invasor Mnemiopsis leidyi: predación sobre larvas de peces
XVII Simposio Ibérico de Estudios de Biología Marina (SIEBM), 11-14 September 2012, Donostia-San ... more XVII Simposio Ibérico de Estudios de Biología Marina (SIEBM), 11-14 September 2012, Donostia-San SebastiánMnemiopsis leidyi es una especie de ctenóforo nativo de la costa Atlántica de América (Purcell et al. 2001). Esta especie tiene una alta tolerancia a las condiciones ambientales, pudiendo habitar en aguas con temperaturas que varían de 0ºC a 32ºC y salinidades desde ≤ 2 a 38. Dada esta característica, M.leidyi ha sido capaz de invadir diferentes mares del mundo (Costello et al. 2012) y su presencia ha tenido un importante impacto negativo en los ecosistemas de algunas de las zonas invadidas. En estas áreas, se ha observado una reducción de la biomasa del zooplancton, cambios en su composición, e incluso el colapso de las pesquerías debido a su depredación sobre larvas y huevos de peces, tal como ocurrió en el Mar Negro (Shiganova, 1998; Shiganova & Bulgakova, 2000; Shiganova, 2005; Roohi et al., 2008; Roohi et al., 2010). En julio del 2009 fue reportada por primera vez la presencia de M. leidyi a lo largo de la costa mediterránea española. Durante el verano del 2010 éste ctenóforo reapareció en el Delta del Ebro, esta vez sobreviviendo al invierno, lo que sugiere un establecimiento de la especie en la zona (Marambio et al. en preparación). Dadas las características de esta especie, es de gran interés la interacción que M. leidyi pueda tener sobre las poblaciones de peces costeros. Para ello, es necesario determinar las tasas de alimentación sobre larvas de peces. Con este objetivo, se han realizado una serie de experimentos con larvas de dos especies de peces, Sparus aurata y Dicentrarchus labrax. Se ha medido el tiempo de digestión de ambas presas bajo diferentes condiciones de temperatura y salinidad. Las condiciones han sido: 35; 37,7 y 38 de salinidad y en cada una de las salinidades 4 temperaturas: 12, 21, 25 y 28ºC, valores que se ajustan a las condiciones que se encuentran a lo largo del año en la costa Catalana. Los resultados indican que el tiempo de digestión de M. leidyi puede variar entre 4 y 6 horas. Se observan diferencias entre ambas especies de peces, siendo el tiempo de digestión de S. aurata menor que el de D. labrax. También se observan diferencias entre las distintas condiciones experimentales. Así, el tiempo de digestión es menor a altas temperaturas y baja salinidad. La información sobre los tiempos de digestión es esencial para poder inferir las tasas de alimentación de M.leidyi junto con la información de su dieta natural a partir del estudio de los contenidos estomacales. A su vez estos resultados constituyen los primeras datos sobre la interacción entre este gelatinoso y larvas de pez siendo además estas aproximaciones una importante contribución a los aspectos ecológicos de esta especie invasora en las costas EspañolasPeer reviewe
Population development and potential establishment of the invasive ctenophore Mnemiopsis leidyi in the Alfacs Bay, NW Mediterranean
Fourth International Jellyfish Bloom Symposium, 5-7 June 2013, Hiroshima, JapanPeer reviewe
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Papers by Macarena Marambio