Aliance of Communities for Sustainable
Fisheries
P O Box 1309, Carmel Valley, CA 93924 (831) 659-2838
To put this bycatch in perspective with other
gears and user groups consider that according to the California's
Living Marine Resources: A Status Report, December 2001 (LMR)
there are 17. 8 million fish caught recreationally each year,
while only 9.6 million of them are brought ashore. Similarly,
other important commercial fisheries result in smaller fish caught
and not landed.
In more recent years, concern has been raised
about the impact of trawl gear upon the benthic environment. For
many the sight of what appears to be very large heavy fishing
gear sitting on a dock creates the impression that this same gear
is on the ocean floor crushing everything that it contacts. In
reality, the specific gravity of trawl gear makes it much lighter
in the water and when deployed the gear is "flying"
through the water. The movement of trawl gear through the water
has been compared to the movement of spinning lures used by recreational
in a mountain stream. If an angler reels his lure in too fast
the lure rises in the water. If the lure is retrieved too slowly,
the lure falls to the bottom. Trawlers tow their gear at a speed
to easily move their net above the ocean floor.
Last year the National Academy of Science published
a report on the impacts of trawls and dredges gear on the seafloor.
This report presents a model that relates the impact on the ocean
bottom with bottom substrate and frequency of natural disturbance.
The ocean floor type with the lowest potential disturbance from
fishing is the area with sandy bottom, while the area with the
greatest potential impact is rocky area with large boulders. Across
this gradient, the potential impacts from fishing increases with
frequency fished.
So where do the fisheries impacted by SB 236 take
place? Referring to California's Living Marine Resources: A Status
Report (December 2001) these animals generally live on sandy to
mud bottoms. In order of occurrence in the report, the following
characterizes their habitat:
Ocean shrimp (Pink shrimp): "Concentrations
of shrimp generally remain in well-defined areas or beds from
year to year. These areas are associated with green mud and muddy-sand
bottoms."
Ridgeback prawn: "This species occurs on
substrates of sand, shell and green mud."
Sea cucumber: "Sea cucumbers are epibenthic
detritivores that feed on organic detritus and small organisms
within the sediments and mud."
California halibut: "Adult California halibut
inhabit soft bottom habitats in coastal waters generally less
than 300 feet deep, with the greatest abundance at depths of less
than 100 feet."
How much area is fished by these State managed
trawl fisheries and how frequently do they return to the same
grounds? The National Academy of Science report haracterizes the
level of trawl fishing on the West Coast as low compared to other
areas of the country. The report indicates that the amount of
trawl activity was similar in all three states, with slightly
higher effort occurring off Oregon. The report states that in
the mid-1990's, in the area off California, about 15% of this
area was swept with a trawl tow at least once per year. The remaining
85% of the area averaged less than one tow per year. This means
that 85% areas had been towed only once every few year or not
at all. Additionally, according to the report the amount of trawl
activity had dropped by 60% by the late 1990's. Presenting recent
Oregon data to show this decline in trawl activity the report
indicates that in the late 1990's the area fished more than once
per year had drop to 6% of the total area. This indicates that
trawl fishing is not only light, it is also concentrated into
a very small area of the total ocean seafloor. The regulations
that have been implemented since 2000 have likely reduced the
area fished once again by around one-half.
Many of the "declarations and findings"
in SB 236 are simply not true or do not pertain to West Coast
trawl fisheries. One finding states that the "Protections
provided to the marine environment should be as effective as those
provided to the terrestrial environment". If this were turned
around and reworded so that impacts on the terrestrial environment
can not be greater than the impacts caused by trawl gear in the
marine environment, California would not have its large cities
and freeways or lead the world in
agricultural production. The message given by this bill is improvements
to sustainable fisheries are possible, but not allowed.
CONTINUED