Sentence examples for gillnets of from inspiring English sources

Fishers worked from 6 8 m outboard-powered skiffs and targeted primarily California halibut (Paralichthys californicus, Ayres) and used 20.3 cm mesh monofilament gillnets of 400 m length and height from 3 m to 6 m.

However, selectivity curves for gillnets of specific sizes are difficult to determine, even with experimental fishing using gillnets of known mesh size (Todd and Larkin 1971).

The most well studied gears are trawls, longlines and gillnets of which trawls and longlines are generally characterized by logistically shaped selectivity curves (e.g. Huse et al. 1999; Zuur et al. 2001) whereas dome-shaped selectivity curves apply to gillnets (e.g. Huse et al. 1999; Madsen et al. 1999; Stergiou and Erzini 2002).

Sturgeon numbers have plummeted by as much as 99 percent in some areas of the East Coast, and while NOAA has not yet developed a recovery plan, the new listing could affect as many as 42 fisheries, particularly those that support the gillnetting of monkfish and spiny dogfish, pound-netting of striped bass and trawling for flounder.

Off KwaZulu-Natal, the decimation of large sharks by the use of gillnets to protect beaches has led to a recent increase in milk shark numbers.

Gillnets made of Polyamide (PA) monofilament of diameter 0.23 mm to 0.28 mm and mesh size that ranged from 110 mm to 130 mm are commonly used.

Gillnet bycatch estimates and BPUE for the Japanese pelagic driftnet fleet was published based on 25,500 km of observed gillnet sets [22], while we observed 58.4 km of gillnets (13.2 km of deep sets >32 m).

Primarily we contrast different types of gillnets and trawls in search of evolutionarily desirable harvesting practices.

Additionally, the use of multiple sizes of gillnets, as is frequently the case in commercial fisheries, makes the gillnet selectivity curves even more difficult to estimate.

In addition to the poorer quality of fish obtained from gillnets, the discarding of unwanted fish increases steadily with the time during which nets are deployed (i.e., soak time), particularly as the gear is set further and further from shore (Hutchings and Ferguson 2000), resulting in higher catch misreporting.

Fish with mean length of 30 cm have been reported in the gillnet catches of long tail tuna in Oman Sea waters in October while the average size was found to be 36 and 46 cm for February and May, respectively.