TABLE 5.4. Scores for Each Alternative Reflecting Levels of Protection for Benthic Essential Fish Habitat Relative to Alternative 1

 

 

Alternatives

Issue

Effects

1

2.1

2.2

3

4.1

4.2

5

6.1

6.2

Direct Effects

Habitat

Removal/damage of HAPC biota by bottom trawl gear

0

1

2

–1/1

0

0

2

–1/1

–2

Complexity

Removal/damage of HAPC biota by fixed gear

0

1

1/–1

1

0

1

–2

–1

–1

 

Modification of nonliving substrates by bottom trawl gear

0

1

2

0

0

0

2

–1

–2

 

Modification of nonliving substrates by fixed gear

0

2

2

1

0

2

–2

0

–2

Indirect Effects

Minimization of Adverse Impacts

Biodiversity

0

0

0

2

0

0

2

0

0

NOTE: 0 = no change/difference from Alternative 1; –1/1 = marginal, or minor change from Alternative 1; and –2/2 = moderate or major change from Alternative 1. The index values contained in this table only contain ordinal information and can only be used to make ordinal comparisons. For example, an index value of 2 is better than a value of 1, but not necessarily twice as good. Therefore, it is not possible to obtain meaningful summary information by performing numerical operations (e.g., adding, subtracting, averaging) using two or more of the index values.

SOURCE: National Marine Fisheries Service, 2001a.



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