Abundance Information for Gobius niger
Referencia principal
País England and Wales (UK) Ecosistema Atlantic Ocean
Localidad R3 - between North Foreland & Portland Bill Depth
Introducida Year Intro.
Estadio de desarrollo not specified mixed
Quantitative 1.416 Unit numbers/km2
Semi Quantitative <100 Unit numbers/km2
Qualitative very common
Año 1973 - 1995 Período 1950-1974
Fecha 01/09/73 - 30/09/95 Record Type survey
Record Type survey
Seasonal yes Método swept area
Observaciones Area surveyed includes the Hampshire harbours and the Solent. In 1973 and 1979, the east coast was sampled thoroughly. The 1974 sampling only included the south coast. From 1981-1995, both east and south coasts were sampled annualy during September. Data provided are the mean catch during the period. Two types of fishing gears were used during the survey (2m beam trawl and 1.5m push net), both used fine mesh nets with codend liner of 4 mm knotless mesh, a light chain footrope and three tickler chains stretched loosely between shoes. The push net was operated in areas between 0-1m depth while the beam trawl was deployed from a small boat in water up to 20m deep, moving at approximately 1 knot or 35 min per minute.
(por ej. 9948)
( por ej. cephalopods )
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