| CRD 02-01
Table 7. Impacts of Sink
Gill Nets and Bottom Longline |
| TYPE OF IMPACT |
DEGREE OF IMPACT |
DURATION |
TYPE OF EVIDENCE |
COMMENTS |
| MUD |
| Removal of Major Physical Features |
N/A |
|
|
|
| Impacts to Biological Structure |
X |
Months - Years |
PJ |
|
| Impacts to Physical Structure |
X |
Permanent1
Days - Months2 |
PJ |
1 Refers to clays
2 Soft bottom muds |
| Changes in Benthic Prey |
N/A |
|
|
|
| SAND |
| Removal of Major Physical Features |
N/A |
|
|
|
| Impacts to Biological Structure |
X |
Days - Months |
PJ |
|
| Impacts to Physical Structure |
N/A |
|
|
|
| Changes in Benthic Prey |
N/A |
|
|
|
| GRAVEL |
| Removal of Major Physical Features |
N/A |
|
|
|
| Impacts to Biological Structure |
X |
Months - Permanent1 |
PR, GL, PJ |
1 corals |
| Impacts to Physical Structure |
N/A |
|
|
|
| Changes in Benthic Prey |
N/A |
|
|
|
| KEY: X = Effect can be present, but is rarely
large; XX = Effect is present and moderate; XXX = Effect is often
present and can be large; N/A = Effect is not present or not
applicable; Unknown = effects are not currently known; (H) =
High energy environment; (L) = Low energy environment; PR = Peer
reviewed literature; GL = Grey literature; PJ = Professional
judgement. For definitions of Sediment Type and Type of Impact
see Appendix D. |