Second project meeting in Roscoff. 10-12 April 2018

From left to right: Anne-Sophie Le Port, Marion Ballenghien, Didier Jollivet, Lucille Perrier, Eric Thiebaut, Juliette Chiss, Dominique Davoult (UPMC), Yaisel Borrell (Univ. Oviedo), David Mateus (University Evora), Céline Houbin (UPMC), Gonzalo Macho (Univ. Vigo), Antonella rivera (Univ. Oviedo), Teresa Silva (Univ. Evora), Katja Geiger (Univ. Oviedo), Teresa Cruz (Univ. Evora), Alba Aguión (Univ. Vigo), Joana Fernandes (Univ. Evora) Justina Meana and José Luis Acuña (Univ. Oviedo)

The second project meeting was finally held at Roscoff between the 10 and 12 April. It was an important meeting where we had to evaluate the damage to the Human Excusion Experiment after a very harsh winter. In Asturias several of the exclusion cages were released by successive storms with 7-m waves. Fortunatelly, they could be fixed as soon as we had access to the sites. In Galicia, te cages were mostly affected by vandalism. All in all, the exclusion experiment continues as planned. We also discussed advances in the larval transport models, which are currently in their first runs after a thorough revision of assumptions during the past Aveiro meeting. It is time for the next step -the bioeconomic models. It was decided that we would devote a full meeting to the bioeconomic models next year in Vigo. Just as the Aveiro meeting, it was not planned in the original proposal, but we deemed it essential for quick progress to our goal. Genetics had also their room in the discussion, and we were made aware of the struggle to arrive at a set of microsatellite markers to evaluate the connectivity among populations. Very nice group work, extraordinary hosting by the Station Biologique, and by Dominique Davoult, Eric Thiebaut and their group, at a pair with the excellence of the past Sines meeting. About food and people, well, it’s France!

From left to right: Jorge Chachero (DOCUMENTAZUL), Seagull 1, Seagull 2, professional stalked barnacle harvester Patrick Tanguy and Olivier Bohner (UPMC).

After the meeting, videodocumentalist Jorge Chachero (DOCUMENTAZUL) arrived to Brittany with the goal of capturing images of a barnacle harvester and of PERCEBES scientists in action at the rocky shore. The prospects were quite horrible regarding the weather, but finally we were very lucky to be able to follow harvester Patrick Tanguy in one of his harvesting trips to the rocky shore in Quiberon. Patrick was not only an acomplished harvester, but also a delightful source of information and a cultivated person with a remarkable insight into the ecological processes of this particular environment. That same day we also had a deep and extremely interesting interview with Guillaume Le Priellec, the person in charge of the fishery organization, who gave us detailed account of how this fishery is managed. There we learned that this fishery is to some extent co-managed with the harvesters, who participate in the decisions on the when, where and how much to harvest.

During our visit to Toulbroc’h, from left to right: Dominique Davoult (UPMC), José Luis Acuña (Univ. Oviedo) and Olivier Bohner (UPMC).

Last day we tried to accompany Dominique Davoult and Olivier Bohner to visit Toulbroc’h, where the team at the Station Biologique du Roscoff (UPMC) have installed one of the PERCEBES experimental sites. This time the weather did not help, and we were only able to get close enough to make out one of the cages in the distance, surrounded by a magma of foam and 6-m waves. As in Portugal and Spain, winter has been tough in Brittany. In summary, these have been very intense and successful days, and the atmosphere of team job and good spirits made the rest. Thanks to all participants and see you in Vigo-2019!

 

 

 

Winter has hit hard

This is what is left of one of our experimental cages in one of project PERCEBES sites in Asturias, N Spain. Loss of cages has been massive in Asturias during winter, possibly because the main storm hit directly from the North. By comparison, sites at Portugal and Galicia fared much better. Note that the rock has been devoid of any animals or algae, because the cage has been smashing against the surface while hanging from the last of the remaining bolts. Awesome power of the ocean.

Pictures of an experimental plot which was covered by a cage before (left) and after (right) been vandalized.

Some of the cages have also been vandalized. The impact is still limited, and all biologist and fishers guilds are very committed and supportive with our project, so we expect this to remain controlled. If it gests any worse it could definitely ruin the experiment. The picture shows one of the vandalized cages before and after. Note that the vandal was careful enough to pick a single barnacle!!

 

Modelling meeting in Aveiro

Rita Nolasco, from the University of Aveiro, explains some of the intrincate aspects of the biophysical models during the meeting. From left to right: Rita Nolasco, Henrique Queiroga, Jesus Dubert (University of Aveiro), Antonella Rivera and Katja Geiger (University of Oviedo), Gonzalo Macho (University of Vigo), David Mateus (University of Evora) and Elena Ojea (University of Vigo). In the meeting there were also Eric Thiebaut (Station Biologique de Roscoff) and Amandine Nicolle (ENSTA Bretagne), who participated through videoconference, as well as Teresa Cruz, Joana Fernandez and David Jacinto (University of Evora) and Elsa Vazquez and Alba Aguión (University of Vigo).

During the 29 and 30th of January members of PERCEBES met at the Complexo Interdisciplinar de Ciências Físicas Aplicadas à Nanotecnologia e Oceanografia (CICFANO), in the University of Aveiro, Portugal, to discuss different aspects of the biophysical models of larval transport. One of the aims of project PERCEBES is to develop models to predict the drift of the stalked barnacle larvae during their open water, planktonic life. For this, the groups at Aveiro (Portugal) and ENSTA (France) are developing hydrodynamic models that simulate the movement of water in the coast. Once those models are available, we will inject a population of virtual larvae which will behave according to what we know of these animals. This meeting had two purposes. The first was to define the time and space scales of the hydrodynamic model, as well as its resolution. The second was to agree on the characteristics and behaviour of the larvae that will be injected into the model. Some aspects are still unknown or very poorly constrained, thus we needed to reach a consensus based on the best available knowledge, and propose different scenarios. This is a critical step in our way to develop a bioeconomic model, which is one of the two main scientific goals of this project.

El proyecto PERCEBES instala jaulas experimentales en varios lugares de la costa asturiana

Imagen de una de las jaulas instaladas

Desde el mes de Julio, pueden verse en algunos puntos de la costa de Tapia, Luarca, Oviñana y Cudillero unas jaulas metálicas que han sido instaladas por el personal del proyecto de la Unión Europea PERCEBES. Rogamos a toda persona que se encuentre con éstas jaulas que las respete y no manipule los animales y algas que hay en su interior. Entre los motivos para respetar esas jaulas están:

  • Es un experimento que pretende mejorar la explotación del percebe. La función de las jaulas es evitar que los percebes que hay en su interior sean extraídos, con la idea de poder documentar la velocidad a la que se recuperan sus poblaciones,  cómo se expanden los percebes por la superficie de la roca y cómo crecen los percebes en número y tamaño. Esperamos que eso nos permita diseñar formas mejores de explotar el percebe, más sostenibles en el tiempo, económicamente más rentables, y más respetuosas con el medio ambiente.
  • Ocupan una superficie mínima de las rocas. En cada uno de los 4 sitios experimentales  llegará a haber hasta 12 jaulas, cada una de ellas de 35 X 35 cm. Es decir, estamos hablando de algo menos de 6 metros cuadrados de superficie enjaulada en toda la costa de Asturias.
  • Es un esfuerzo internacional liderado por la Universidad de Oviedo. El mismo experimento, con el mismo número de sitios y jaulas, se está llevando a cabo en las costas de Alentejo (Portugal), Galicia y Bretaña (Francia). Seis centros de investigación del Arco Atlántico hemos conseguido ponernos de acuerdo para realizar un gran esfuerzo de investigación para mejorar la gestión del percebe. El experimento nos permitirá entender el efecto de la explotación en sitios geográfica, cultural y administrativamente diferentes.
  • Los datos de éste experimento servirán para que muchos jóvenes investigadores lleven a cabo sus Tesis. Dañar las jaulas supondrá arruinar el trabajo de éstos estudiantes, que han invertido esfuerzo, tiempo e ilusión en el proyecto.
  • ¡El experimento es interesante!. Puede decirse que éste experimento es una especie de Gran Hermano de los percebes. Durante dos años, una vez al mes, tomaremos fotografías de las superficies encerradas en las jaulas, y podremos seguir la evolución de las poblaciones de percebes y otros organismos. Veremos cómo compiten por el espacio, como sustituyen unos a otros, en qué épocas del año se reproducen y crecen, cómo les afectan tormentas y oleaje, y muchas otros aspectos fascinantes que no habían sido observados hasta la fecha en éste sistema. A través de la página web del proyecto PERCEBES intentaremos informar de la evolución de algunas de las superficies.

Esta es una de las fotos que se toman mensualmente en cada una de las jaulas. Pueden apreciarse no menos de 20 especies diferentes que coexisten con los percebes

Deseamos también animar a todos aquellos profesionales o aficionados del mar que se encuentren con éstas jaulas a que nos informen de cualquier incidencia o daño que se pudiera producir. Para ellos se dispone de los siguientes datos de contacto:

 

José Luis Acuña

Observatorio Marino de Asturias

Departamento de Biología de Organismos y Sistemas

Universidad de Oviedo

Calle Catedrático Rodrigo Uría, Sin Número

33071 Oviedo

 

teléfono/whatsapp (preferible): 620855835

correo electrónico: oma@uniovi.es

 

Convocatoria de un contrato laboral para trabajar en el proyecto PERCEBES

El proyecto PERCEBES (Herramientas para la transición hacia la gestión espacial de los recursos costeros: la pesquería del percebe en el suroeste de Europa; PCIN-2016-028) busca un Graduado en Biología o Ciencias del Mar para un contrato para labores técnicas de apoyo entre el 1 de Julio de 2017 y el 30 de Junio de 2018 y un salario bruto de 21196 € anuales.

PERCEBES es una colaboración internacional auspiciada por la ERANET BIODIVERSA y coordinada por la Universidad de Oviedo. Ha sido concebido como una demostración científica y práctica del efecto de la recogida de percebes sobre la biodiversidad, productividad y conectividad de las comunidades asociadas. Para ello, se realizará un Experimento de Exclusión Humana de escala continental en las costas de Alentejo, Islas atlánticas, Costa Oeste de Asturias y Sur de Bretaña, cubriendo el rango latitudinal en el que los percebes son explotados en la Unión Europea. Los resultados del experimento de exclusión humana se relacionarán con modelos biofísicos de dispersion larvaria para visualizar la conectividad entre las diferentes unidades de gestión. En el proyecto participan grupos de investigación con experiencia en la experimentación manipulativa de las costas rocosas, en genética de poblaciones y en ecología de cirrípedos (Universidad de Évora, Universidad de Vigo, Universidad de Oviedo y Universidad Paul y Marie Curie) y grupos con experiencia en el modelado biofísico del transporte larvario (École Nationale Supérieure de Techniques Avancées y Universidad de Aveiro).

Entre las actividades de la persona contratada están: 1. Instalación y seguimiento de superficies experimentales en la costa rocosa. 2. Análisis de las fotografías obtenidas en las superficies experimentales. 3. Muestreo de organismos para análisis biológicos. 4. Análisis de muestras de reclutamiento de percebes. 5. Visitas a las cofradías para recopilación de muestras e interacción con el sector pesquero. 6. Preparación y asistencia a reuniones internacionales del proyecto PERCEBES. 7. Asistencia general en tareas de campo. 8. Escaneo y digitalización de datos de archivo.

Para información y registro, consultar la convocatoria en la Universidad de Oviedo

Building cages flat out!

A worker in “Metalistería El Vasco” folds one of the cages for the Human Exclusion Experiment, while Jorge Chachero, from DOCUMENTAZUL, shoots the whole scene for the video documentary.

People at “Metalistería El Vasco” are working frantically to meet the deadline with the cages. Folding, cutting, welding, drilling, sparks, shouts… Within 3 weeks we are supossed to be fixing those cages to the rocks at the intertidal in Brittany, Asturias, Galicia and Alentejo. Once finished, the cages will go through a galvanization bath, and then sent out to each of the places, spanning the whole Atlanctic Arc. A few months ago we could have done the galvanization right here in Gijón, in AGALSA, at the same place were “El Vasco” is. Unfortunatelly, the crisis has not forgiven AGALSA and its several dozens of workers, and we have to send the cages to a factory in Avilés, also in Asturias. Our visit to the metal workshop at “El Vasco” marked also the start of the PERCEBES video documentary. We wanted to shoot the process of ellaboration of the cages, from the scratch. Work on the script for the flick is almost done, and these are the very first scenes being filmed. We will not be shooting randomly to put it althogether at the end. There is a story, and it has to do with fishers, but also with science, but…wait a moment…no spoilers!!!