patrickbdevaney/mia9 · Datasets at Hugging Face

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Pine
Rockland
Acres
NFC
Code Address Comments
Accursio Pineland 4.8 P-347 SW 348 St. & ca. 204 Ave. High quality pine rockland
*Kings Highway
(CARL 14) 23.5 P-313 SW 304 St. & 203 Ave. Probably unwilling seller
Hattie Bauer Addition 7.8 P-308 SW 268 St. & 157 Ave.
Adjacent to Hattie Bauer
EEL site
* School Board (CARL 10) 15.6 P-275 SW 268 St. & 132 Ave.
*Northrop Pineland 16 P-312 SW 296 St. & 207 Ave. EEL Preparing to Acquire
*Wilkins-Pierson 12.5 P-14 SW 184 St. & 164 Ave. Probably unwilling seller
*Quail Roost Addition ca. 6 P-144 SW 204 St. & 147 Ave. Adjacent to Quail Roost
Management Policy
The EEL program should make every attempt to identify and acquire any remaining
pine rockland fragments within Miami-Dade County suitable for conservation.
EEL Program, Management Plan, Part II – Pine Rockland (DRAFT) _____________________________________________________________________________________________________________________
Page 30
Property Name
Pine
Rockland
Acres
NFC
Code Address Comments
EEL site
Retreat Construction Corp 13.5 P-414 SW 352 St. & 192 Ave. Probably unwilling seller
*Richmond Pine Rocklands -
Federal Properties 177 P-391 SW 152 St. & 117 Ave. No comment
*Navy Wells #2, School Board 10.8 P-329 SW 324 St. & 199 Ave. No comment
Shields Pineland 6.3 P-421 SW 226 St. & 190 Ave. No comment
University of Miami South
Campus 65 P-391 SW 152 St. & 124 Ave. No comment
*University of Miami, former
Naval Observatory 67 P-391 SW 168 St. & 117 Ave. No comment
4.2 Mitigation/Management for Fragmentation Effects
As discussed in Part I, Section 5.2.3, greenways, stepping stones and between-site re-vegetation
could improve biological connectivity between isolated natural area fragments. Actions that may
be particularly valuable for enhancing pine rockland habitat are discussed below.
4.2.1 Acquisition and Restoration of Vacant Land between Parcels
The EEL program should consider the acquisition of vacant lands between pine rockland sites for
restoration and use as “stepping stones” between forest fragments. As discussed in 4.2.1 above,
hardwoods that could invade pine rocklands and require later removal should not be planted
close to pine rocklands. Re-vegetated stepping stones will provide food and cover for wildlife,
making it easier for them to move between pine rockland fragments. Water features, including
shallow ponds and wetlands, should be considered to enhance wildlife habitat.
4.2.2 Zoning Around and Between Parcels
The EEL program should encourage zoning
around its properties that is most compatible
with management of pine rockland fragments.
Proper management of pine rockland fragments
includes prescribed burning (which can
generate heavy amounts of smoke), controlled
access by people, and minimizing edge effects.
Surrounding land use can impact any of these
management techniques.
Retaining agricultural lands (AU), where they
already exist, around and between EEL sites is
Management Policy
All possible effort shall be taken to maintain and reestablish biological connectivity
between pine rockland EEL sites and other natural areas by creation of greenways,
acquisition and restoration of vacant land between parcels, and encouraging
appropriate zoning around and between parcels.
Miami-Dade County pineland with adjacent development
Photo by Keith Bradley, IRC
EEL Program, Management Plan, Part II – Pine Rockland (DRAFT) _____________________________________________________________________________________________________________________
Page 31
preferred. If residential development is planned around EEL sites, larger lot sizes such as EU-2
(5 acres) and EU-1C (2.5 acres), are much preferred over small lots (all RU types), to maximize
open space and limit pollution runoff. Construction of hospitals, schools, apartments, and hotels
around EEL sites should be discouraged because of conflicts with smoke generation during
prescribed fires. In support of this, the EEL program should develop a map of smoke corridors
for EEL properties during prescribed burning, which the Miami-Dade County Planning and
Zoning Department could utilize to more effectively plan zoning and natural areas protection in
these areas.
4.3 Targets for Vegetation Structure
Historical and current vegetation conditions have been discussed in Sections 2.4 and 3.4,
respectively. This section discusses management of vegetation structure and composition. In
general, pine rockland sites should be managed in an attempt to restore or approach historical
conditions. Some aspects of vegetation may need to be managed outside of historical parameters
to deal with the constraints imposed on management by extremely fragmented forest conditions.
4.3.1 Canopy Density
Pine rocklands should be managed to retain a canopy of South Florida slash pine and hardwoods
should not be allowed to reach canopy stature. Historical densities of pines in pine rocklands
ranged from about 200 to 900 per acre (Snyder et al., 1990, Platt et al. 2002). However, due to
reduced fire frequency, pine rockland sites should be managed for a sparser canopy of pines than
they historically had, perhaps ranging from 25 to 225 trees per hectare, a quarter of the historic
density.
Reduced pine canopies are now desirable because future fire frequencies, though targeted to
occur at three (3) to seven (7) year intervals, will likely occur much less frequently than planned.
Because of neighboring structures, roads and highways, and dense populations, some pine
rockland sites may be impractical to burn at all. Pine trees generate large amounts of needle duff
which is normally consumed by fires. In the absence of regular fires the duff accumulates,
decomposes, and creates an organic soil layer. Under this scenario some native pine rockland
herbs and grasses, including endemics and imperiled species, disappear. Remaining pine
rockland fragments with dense pine canopies have a greatly reduced herb diversity. Even if sites
do burn occasionally, but less frequently than three (3) to seven (7) years, herbaceous richness
will decline and when fires do occur they will generate more heat. These more intense fires are
more likely to kill pines and other desirable species.

Pine

Rockland

Acres

NFC

Code Address Comments

Accursio Pineland 4.8 P-347 SW 348 St. & ca. 204 Ave. High quality pine rockland

*Kings Highway

(CARL 14) 23.5 P-313 SW 304 St. & 203 Ave. Probably unwilling seller

Hattie Bauer Addition 7.8 P-308 SW 268 St. & 157 Ave.

Adjacent to Hattie Bauer

EEL site

* School Board (CARL 10) 15.6 P-275 SW 268 St. & 132 Ave.

*Northrop Pineland 16 P-312 SW 296 St. & 207 Ave. EEL Preparing to Acquire

*Wilkins-Pierson 12.5 P-14 SW 184 St. & 164 Ave. Probably unwilling seller

*Quail Roost Addition ca. 6 P-144 SW 204 St. & 147 Ave. Adjacent to Quail Roost

Management Policy

The EEL program should make every attempt to identify and acquire any remaining

pine rockland fragments within Miami-Dade County suitable for conservation.

EEL Program, Management Plan, Part II – Pine Rockland (DRAFT) _____________________________________________________________________________________________________________________

Page 30

Property Name

Pine

Rockland

Acres

NFC

Code Address Comments

EEL site

Retreat Construction Corp 13.5 P-414 SW 352 St. & 192 Ave. Probably unwilling seller

*Richmond Pine Rocklands -

Federal Properties 177 P-391 SW 152 St. & 117 Ave. No comment

*Navy Wells #2, School Board 10.8 P-329 SW 324 St. & 199 Ave. No comment

Shields Pineland 6.3 P-421 SW 226 St. & 190 Ave. No comment

University of Miami South

Campus 65 P-391 SW 152 St. & 124 Ave. No comment

*University of Miami, former

Naval Observatory 67 P-391 SW 168 St. & 117 Ave. No comment

4.2 Mitigation/Management for Fragmentation Effects

As discussed in Part I, Section 5.2.3, greenways, stepping stones and between-site re-vegetation

could improve biological connectivity between isolated natural area fragments. Actions that may

be particularly valuable for enhancing pine rockland habitat are discussed below.

4.2.1 Acquisition and Restoration of Vacant Land between Parcels

The EEL program should consider the acquisition of vacant lands between pine rockland sites for

restoration and use as “stepping stones” between forest fragments. As discussed in 4.2.1 above,

hardwoods that could invade pine rocklands and require later removal should not be planted

close to pine rocklands. Re-vegetated stepping stones will provide food and cover for wildlife,

making it easier for them to move between pine rockland fragments. Water features, including

shallow ponds and wetlands, should be considered to enhance wildlife habitat.

4.2.2 Zoning Around and Between Parcels

The EEL program should encourage zoning

around its properties that is most compatible

with management of pine rockland fragments.

Proper management of pine rockland fragments

includes prescribed burning (which can

generate heavy amounts of smoke), controlled

access by people, and minimizing edge effects.

Surrounding land use can impact any of these

management techniques.

Retaining agricultural lands (AU), where they

already exist, around and between EEL sites is

Management Policy

All possible effort shall be taken to maintain and reestablish biological connectivity

between pine rockland EEL sites and other natural areas by creation of greenways,

acquisition and restoration of vacant land between parcels, and encouraging

appropriate zoning around and between parcels.

Miami-Dade County pineland with adjacent development

Photo by Keith Bradley, IRC

EEL Program, Management Plan, Part II – Pine Rockland (DRAFT) _____________________________________________________________________________________________________________________

Page 31

preferred. If residential development is planned around EEL sites, larger lot sizes such as EU-2

(5 acres) and EU-1C (2.5 acres), are much preferred over small lots (all RU types), to maximize

open space and limit pollution runoff. Construction of hospitals, schools, apartments, and hotels

around EEL sites should be discouraged because of conflicts with smoke generation during

prescribed fires. In support of this, the EEL program should develop a map of smoke corridors

for EEL properties during prescribed burning, which the Miami-Dade County Planning and

Zoning Department could utilize to more effectively plan zoning and natural areas protection in

these areas.

4.3 Targets for Vegetation Structure

Historical and current vegetation conditions have been discussed in Sections 2.4 and 3.4,

respectively. This section discusses management of vegetation structure and composition. In

general, pine rockland sites should be managed in an attempt to restore or approach historical

conditions. Some aspects of vegetation may need to be managed outside of historical parameters

to deal with the constraints imposed on management by extremely fragmented forest conditions.

4.3.1 Canopy Density

Pine rocklands should be managed to retain a canopy of South Florida slash pine and hardwoods

should not be allowed to reach canopy stature. Historical densities of pines in pine rocklands

ranged from about 200 to 900 per acre (Snyder et al., 1990, Platt et al. 2002). However, due to

reduced fire frequency, pine rockland sites should be managed for a sparser canopy of pines than

they historically had, perhaps ranging from 25 to 225 trees per hectare, a quarter of the historic

density.

Reduced pine canopies are now desirable because future fire frequencies, though targeted to

occur at three (3) to seven (7) year intervals, will likely occur much less frequently than planned.

Because of neighboring structures, roads and highways, and dense populations, some pine

rockland sites may be impractical to burn at all. Pine trees generate large amounts of needle duff

which is normally consumed by fires. In the absence of regular fires the duff accumulates,

decomposes, and creates an organic soil layer. Under this scenario some native pine rockland

herbs and grasses, including endemics and imperiled species, disappear. Remaining pine

rockland fragments with dense pine canopies have a greatly reduced herb diversity. Even if sites

do burn occasionally, but less frequently than three (3) to seven (7) years, herbaceous richness

will decline and when fires do occur they will generate more heat. These more intense fires are

more likely to kill pines and other desirable species.