González-Gil, S. (Sonsoles)

Jiménez, S. (Sebastián)

Tel, E. (Elena)

Tello-Antón, M.O. (María Olvido)

English

González-Gil, Sonsoles

Tello-Antón, María Olvido

Jiménez, Sebastián

Tel, Elena

Digital.CSIC

Preliminary results of the accumulation of marine debris on the shoreline of Fuerteventura and El Hierro islands (Canary Islands, Spain)

Repositorio Institucional Digital del IEO

Additionally, a new sampling method that does not require garbage picking was  designed. It consists in a 1 x 1 meter grid sampling unit subdivided into 10 x 10 cm  subgrids (Fig 2). The unit is placed in the sampling position by using a computer  application that generates random numbers. These numbers are used as distance in  meters between one grid and the next, following a “road” of oblique transects from  the edge of the ocean line to the head and/or end of the beach (Fig. 3). Once located  in place, the number of subgrids occupied by trash is counted and the debris type  characterized following OSPAR and EMODNET criteria. Fig 3- Oblique transects in Majanicho  beach (North Fuerteventura) Sampling in Las Valdivias beach (NE  Fuerteventura) Debris accumulation in El  Cantadal beach (El Hierro) Results show for the first time the spatial distribution of litter in these two islands. Once  OMARCOST finished, data has been added to the Spanish Institute of Oceanography (IEO) Data  Center and integrated in EMODNET chemistry. Work founded by Project OMARCOST (0127_OMARCOST_2_A) (POCTEFEX) Coastline were initially sampled and stations defined based on  estimated ranges of the number of items per meter of coast analyzed  and their distribution (no litter, low, medium and high litter presence).  Each station was additionally characterized according to the type of  substrate following EMODNET geology criteria (sand, rock and  boulders, coarse sediments, mixed sediment and mud to sandy mud)  as well as to the dominant type of waste (plastic, rope, wood, etc.).   Marine debris type            Littoral classification as a function of debris  accumulation in Fuerteventura Marine debris type Littoral classification as a  function of debris  accumulation in El Hierro 5,72% 3,85% 61,10% 11,88% Preliminary results of the accumulation of marine debris on  the shoreline of Fuerteventura and El Hierro islands (Canary  Islands, Spain) S. González-Gil1, O. Tello1, S. Jiménez2, E. Tel1 1 Instituto Español de Oceanografía. Sede Central. Corazón de María 8, 28002 Madrid, SPAIN 2 Centro Oceanográfico de Canarias. Instituto Español de Oceanografía. La Farola del Mar 22, Dársena Pesquera, 38180 Santa Cruz de  Tenerife, Canarias, SPAIN   About 80% of the marine litter found in the marine environment comes from land-based activities and constitutes an  extremely complex and damaging pressure for the environment. The Canary Islands (Fig 1) have 1501 km of coastline  but until late 2020, the impact generated by accumulation of marine debris on coastline had no specific monitoring  plans that addressed this issue systematically. The Project OMARCOST had as first objective the characterization of the  shorelines of the islands of Fuerteventura and El Hierro in the Canary Islands (as well as the location of the places  where marine litter accumulates more. Fig 1- The Canary Islands showing El  Hierro and Fuerteventura islands Fig 2- Detail of a  sampling grid 

http://www.repositorio.ieo.es/e-ieo/bitstream/10508/11883/1/Emodnet2021_conf_gonzalezgiletal.pdf

Preliminary results of the accumulation of marine debris on the shoreline of Fuerteventura and El Hierro islands (Canary Islands, Spain)

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