Spatial and temporal variation in pelagic community of the western and southern Iberian Atlantic waters
| Autor: | Maria Manuel Angélico, Vitor Marques, Eva García-Seoane, Alexandra Silva |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
0106 biological sciences
Bottom fishing Biomass (ecology) 010504 meteorology & atmospheric sciences biology 010604 marine biology & hydrobiology Sardine Community structure Pelagic zone Aquatic Science Oceanography biology.organism_classification 01 natural sciences Horse mackerel Geography Chub mackerel Anchovy 0105 earth and related environmental sciences |
| Zdroj: | Estuarine, Coastal and Shelf Science. 221:147-155 |
| ISSN: | 0272-7714 |
| DOI: | 10.1016/j.ecss.2019.03.018 |
| Popis: | This study analyzed the spatial and temporal variation in the community composition of the pelagic species inhabiting the Atlantic Iberian waters using a multivariate approach. Trawl data (pelagic and bottom fishing) were collected during the spring acoustic surveys of pelagic fish from 1996 to 2015. There were significant effects of geographical area, periods, and type of trawls in terms of both, abundance and biomass. Sardine was typical throughout the study area whereas other species were typical of few areas, such as anchovy. The main difference between periods was the variation in typical pelagic species, diminishing the importance of sardine and increasing others, such as chub mackerel, bogue or anchovy. Depth also influenced the community structure with horse mackerel being the principally responsible for sample similarity in bottom trawls. Surface temperature and salinity showed significant relationship with the taxa-derived multivariate data cloud but only explained between 5 and 7% of the total variability. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect