English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/91907
COMPARTIR / IMPACTO:
Estadísticas
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:
Título

Seasonal rhythm in a Mediterranean coastal fish community as monitored by a cabled observatory

AutorCondal, Fernando ; Aguzzi, Jacopo ; Sardà, Francisco ; Nogueras, Marc; Cadena, Javier; Costa, Corrado; Río, Joaquín del; Mànuel, Antoni
Fecha de publicacióndic-2012
EditorSpringer
CitaciónMarine Biology 159(12): 2809-2817 (2012)
ResumenTo adequately describe seasonal rhythms in habitat utilization by fish communities, observations are needed that occur at a relatively high frequency and over large temporal windows. For the first time, images collected from a cabled video-observatory (the western Mediterranean expandable SEAfloor OBservatory; OBSEA) were utilized to examine habitat utilization by coastal fishes. Over the course of a year, hourly digital images of the water column and an artificial reef were obtained during daylight hours. For each image, the total number of species, an estimate of the abundance of individuals, and the Shannon Diversity Index were quantified. A total of 22 fish species commonly associated with nearshore western Mediterranean habitats were identified, and significant spatial (water column vs. artificial reef), seasonal (spring, summer, autumn, and winter), and daily (morning, midday, and sunset) differences in habitat utilization occurred. Four species (Diplodus vulgaris, Diplodus cervinus, Diplodus sargus, and Scorpaena porcus) were associated with the artificial reef, while one species (Pagrus pagrus) chiefly occurred in the water column. Chromis chromis and Diplodus annularis occurred at the site more frequently in the winter and autumn, respectively, while 14 other species utilized the site more frequently in either the spring (8 spp) or summer (6 spp). In addition, Dentex dentex and Spicara maena occurred more frequently at sunset, while D. cervinus displayed a crepuscular rhythm (occurring more frequently in the morning and at sunset). Species diversity was highest in the summer and lowest in the winter. If not taken into account when planning in situ sampling, such seasonal and/or diel differences may lead to spurious estimates of population sizes and biodiversity. We suggest that cabled video-observatories offer a non-invasive and reliable technology for faunistic sampling and population assessment in coastal water of the Mediterranean and likely elsewhere. © 2012 Springer-Verlag
Descripción9 pages, 3 figures, 1 table
Versión del editorhttp://dx.doi.org/10.1007/s00227-012-2041-3
URIhttp://hdl.handle.net/10261/91907
DOI10.1007/s00227-012-2041-3
Identificadoresdoi: 10.1007/s00227-012-2041-3
issn: 0025-3162
e-issn: 1432-1793
Aparece en las colecciones: (ICM) Artículos
Ficheros en este ítem:
No hay ficheros asociados a este ítem.
Mostrar el registro completo
 


NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.