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2
Medium
Restoration to pre-development
conditions would be too expensive and
not likely politically viable
Inexpensive, but difficult to interpret
3 3
2 3
Slow 1
3
12
1 1
5
12
1 15
1 5
2
3
Medium
1
2
1
3
Would require add'l approach for
open-water areas
Adverse impacts from non-salinity water
quality parameters
3 1
Soil Characteristics
STRENGTHS & Score
(0 - no strengths, 5 = strong)
WEAKNESSES & Score
(0 = Very weak, 5 = few weaknesses)
3
Presence/Absence/Vitality
of Preferred Habitats
Ecological Preservation
Valued Ecosystem Components
(Sustainable shrimp fishery, some
shoalgrass, Manatees & Johnsons
Seagrass N. of 270 45' N Latitude)
Pre-development Scenario
Community Index
There is general agreement that returning to
anything close to predevelopment water flows is
not likely
1
1 0
SPEED OF
ADAPTIVE MGMT
(Slow (0), Medium (3) , Fast (5))
4
Suitability of unvegetated sediments
for colonization by shoal grass unknown
Medium
1
Fairly Slow
Fast
OPPORTUNITIES & Score
(0 = creates numerous problems;
5 = creates few problems)
THREATS & Score
(0 = large # of threats, 5= few)
Slow
FEASIBILITY OF COST-EFFECTIVE
PERFORMANCE STANDARDS
(Very costly (0), Comparatively inexpensive (5)
3 5
1
2
1
Population declines may be unrelated to
reductions in freshwater flow
Rev 11-14-03
Table E-5
Advantages and Disadvantages of Different MFL Approaches for Biscayne Bay
South-Central Sub-region
POTENTIAL APPROACHES APPROACH SCORE
(Cumulative Total)
Easily quantifiable Difficulty in relating pop. declines to flow Yes - Data already being compiled
Public can relate Confounding impacts re commercial harvest
Relatively easy to ID Significant Harm Pink shrimp annual recruitment Previously id'd in conceptual model Yes - Data already being compiled
A lot of scientific work already done Difficulty in monitoring minimal changes
Impacts of commercial harvest unknown May require controls on commercial harvest of shr
Sounds good to the public Preferred habitats is a fuzzy concept -for what sp Public acceptance Difficult to quantify "vitality" Expensive and long term
Heterogeneous habitats
Public acceptance The situation would only get worse with time Inexpensive but not legal
Few Reduction in current legal uses of water
Public acceptance Lack of scientific base to work from Expensive and long term
Common scientific tool Not developed for Biscayne Bay May be useful with much further study Not understandable as real Expensive and long term
Common scientific tool Not developed for Biscayne Bay May be useful with much further study Impacts from acts of nature (e.g., hurricanes) Very expensive and long term
Easy to monitor Not connected to salinity changes alone
Only applicable west of shoreline
Fast
Slow
FEASIBILITY OF COST-EFFECTIVE
PERFORMANCE STANDARDS
(Very costly (0), Comparatively inexpensive (5)
3 5
SPEED OF