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Likely politically unpopular |
Common scientific tool Not developed for Biscayne Bay, but biodiversity May be useful with further study Biodiversity is a generally accepted "good thing" On going sampling programs could be a |
Common scientific tool Not developed for Biscayne Bay Very expensive and long term |
Likely politically unpopular |
Impacts from acts of nature (e.g., hurricanes) |
Relatively easy to monitor No soils present |
Entire shoreline bulkheaded |
May reveal additional contaminated soils |
FEASIBILITY OF COST-EFFECTIVE |
PERFORMANCE STANDARDS |
(Very costly (0), Comparatively inexpensive (5) |
3 3 |
Reductions in indicator species may not |
be related to diminishing fresh water flows |
Yes - Some data already being |
compiled |
THREATS & Score |
(0 = large # of threats, 5= few) |
1 |
SPEED OF |
ADAPTIVE MGMT |
(Slow (0), Medium (3) , Fast (5)) |
Replacement of seawalls with mangroves not |
feasible |
STRENGTHS & Score |
(0 - no strengths, 5 = strong) |
WEAKNESSES & Score |
(0 = Very weak, 5 = few weaknesses) |
Existing conditions are highly variable due |
to unnaturally high tidal exchange |
Creating estuarine conditions would |
require substantive infrastructure changes |
Economy viewed as more important than |
ecological conditions in this sub-region |
OPPORTUNITIES & Score |
(0 = creates numerous problems; |
5 = creates few problems) |
Ecological Preservation |
Valued Ecosystem Component |
(Manatees and Johnson's Seagrass) |
Community Index |
4 |
Indicator Species |
(Manatees and Johnson's Seagrass) 3 |
Would increase biodiversity by establishing an estuarine condition |
Pre-development Scenario |
4 |
1 |
Soil Characteristics |
If salinities are correct for seagrasses, |
conditions will be suitable for numerous |
other species |
2 |
Requirement for preferred fish |
communities 3 |
Food Web Support 1 |
3 |
Presence/Absence/Vitality |
of Preferred Habitats |
Historic mangrove shorelines would be |
recreated |
2 |
1 1 |
Would require restoration of mangrove |
shorelines and seagrass habitats |
Recreational fishing is not important in Miami |
River |
Would require changing shoreline from 1 |
bulkhead to vegetation |
Toxins and heavy metals known to be present in sediments |
0 1 |
2 |
1 |
1 2 |
Add'l restrictions to maintain current |
status would not likely receive public |
acceptance |
Public acceptance fairly high for fisheries |
habitat |
Would cause adverse impacts on |
existing industry |
6 |
1 |
Future reductions in Johnson's seagrass presence |
may not be related to diminishing fresh water |
flows |
Additional restrictions to protect seagrasses |
are often highly controversial |
3 |
1 |
Slow 1 |
5 |
0 |
0 |
Medium |
3 4 |
2 |
Medium |
Slow |
Slow |
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