Recursos Marinos y Pesquerías

World Conference on Marine Biodiversity 2011, Aberdeen (Scotland, UK). 26-30 September 2011

09/11/11 ,

Tubío-Gómez, A.; Verísimo-Amor, P. & Muiño-Boedo, R. (2011). Spatial and temporal variability of fish communities in the Marine Reserve of Fishing Interest “Ría de Cedeira” (Galicia, NW Spain) and impact of the degree of protection. [digital object presentation]. World Conference on Marine Biodiversity, 26-30 September 2011. Aberdeen (Scotland, UK).

Abstract:

The Marine Reserve of Fishing Interest (RMIP) “Ría de Cedeira”, implemented in 2009, comprises the internal waters of the Ría Cedeira. Within the scope of the marine reserve are three areas with different degrees of protection, a reserve, two areas of special protection, and an area marina. This study characterizes the distribution and abundance of fish in different areas of protection in order to monitor the possible effect that the degree of protection exerted on them.

Using a BACI-type design (before-after-control-impact) are established, depending on their degree of protection, 6 sampling stations. Seasonally, from 2008 to 2010, we determined the abundance of species through visual census conducted by scuba divers along fixed transects of 100m in length.

We analyzed the spatial and temporal differences in fish communities at different levels of protection, type of substrate and time of year, through nonparametric multivariate techniques, using the statistical package PRIMER v.6 (Clarke & Warwick, 2001). Furthermore, accumulation curves were made using the ESTIMATES program (Colwell, 2009) to determine species richness in each of the study areas.

We have also collaborated on two other presentations:

– Félix-Hackradt, F.C.; Werner-Hackradt, C.; García-Charton, J.A.; Treviño-Otón, J.; Segovia-Viadero, M.; Tubío-Gómez, A.; Pérez-Ruzafa, A. & Marcos-Diego, C. (2011). Factors influencing habitat selection by fish recruits at rocky reefs in Western Mediterranean Sea. [oral presentation]. World Conference on Marine Biodiversity, 26-30 September 2011. Aberdeen (Scotland, UK)

– Werner-Hackradt, C.; Félix-Hackradt, F.C.; Treviño-Otón, J.; Segovia-Viadero, M.; Pérez-Ruzafa, A.; & Marcos-Diego; Tubío-Gómez, A. & García-Charton, J.A. (2011). Density effect and habitat characteristics of the distribution of predators fish species (Perciformes: Serranidae) in Mediterranean rocky reefs. [digital object presentation]. World Conference on Marine Biodiversity, 26-30 September 2011. Aberdeen (Scotland, UK)

Software for textural analysis of splitbeam data: Ecosons splittex

03/11/11 ,

We have just uploaded the software of splitbeam textural analysis, Ecosons splittex, to our downloads page. This software will enable you to analyze textures from angular splitbeam information.
From .raw files, Ecosons splittex calculates the textural variables of Haralick (1973) (alternative) and performs statistical analysis in order to group pings regarding their angular information signal. Graphics and xyz files can be exported for visualization or to a GIS.

Together with the program (working under octave), the .zip file contains the user guide and example files of input and output.

We expect that this software will be useful for you and we encourage you to contact us if you have any question.

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