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Federal Register / Vol. 86, No. 170 / Tuesday, September 7, 2021 / Proposed Rules
lotter on DSK11XQN23PROD with PROPOSALS1

The entirety of Unit 11 overlaps with designated critical habitat for Carters small-flowered flax and Florida brickellbush. Additionally, approximately 7 ac 3 ha or 86 percent of Unit 11 is enrolled in the NFC program.
Unit 12: Nixon Smiley Pineland Preserve Unit 12 consists of approximately 117
ac 47 ha of county-owned lands in Miami-Dade County. This unit was occupied at the time of listing and is currently occupied by the Miami tiger beetle. While surveys of this site have been inconsistent in level of effort, timing, and frequency, they have primarily focused on the habitat previously known to be occupied: The open, sandy areas on the western half of the property.
This occupied habitat contains all of the physical or biological features, including pine rockland habitat of sufficient size with open or sparsely vegetated sandy areas that allow for thermoregulation, foraging, egg-laying, larval development, species dispersal, and population expansion, and natural or artificial disturbance regimes. The physical or biological features in this unit are protected and actively managed to maintain healthy pine rockland habitat. They may require additional special management considerations or protection to address threats of habitat loss and fragmentation, inadequate fire management, vegetation encroachment, collection, small population size, and sea level rise. In some cases, there are management actions being implemented to reduce some of these threats, and continued coordination with our partners and landowners are ongoing to implement needed actions. This unit is occupied by one of two extant populations of Miami tiger beetle, contains essential habitat features all of the physical or biological features, is protected and actively managed, and has an appropriate spatial distribution falling within the range of the species.
The Natural Areas Management Division of Miami-Dade County Parks, Recreation and Open Spaces Department conducts nonnative species control, prescribed fire, and mechanical vegetation treatments on lands owned by Miami-Dade County. The actions help improve habitat that could support the Miami tiger beetle.
All but 2 ac <1 ha of Unit 12
overlaps with designated critical habitat for Bartrams scrub-hairstreak butterfly, Carters small-flowered flax, and Florida brickell-bush. Additionally, approximately 112 ac 47 ha or 96
percent of Unit 12 is enrolled in the NFC program.

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Unit 13: Camp Matecumbe Unit 13 consists of approximately 81
ac 33 ha of State 76 ac 31 ha and county 5 ac 2 ha owned lands in Miami-Dade County. The unit is within the historical range of the Miami tiger beetle, although we are not aware of any records of historical occupancy of the unit. This unit includes remaining pine rockland habitat in the Northern Biscayne Pinelands of the Miami Rock Ridge. This unit includes all the physical or biological features essential to the conservation of the species and is protected and actively managed to maintain healthy pine rockland habitat.
This unit is currently unoccupied by the Miami tiger beetle but is essential for the conservation of the species because it serves to protect habitat needed to recover the species, reestablish wild populations within the historical range of the species, and maintain populations throughout the historical distribution of the species in Miami-Dade County. It also provides habitat for recovery in the case of stochastic events, should the Miami tiger beetle be extirpated from one of its current locations. Given this unit contains essential habitat features all of the physical or biological features, is protected and actively managed, and has an appropriate spatial distribution falling within the range of the species, we are reasonably certain that the lands and habitat within this unit will contribute to the conservation of the Miami tiger beetle.
The Natural Areas Management Division of Miami-Dade County Parks, Recreation and Open Spaces Department conducts nonnative species control, prescribed fire, and mechanical vegetation treatments on lands owned by Miami-Dade County. The actions help improve habitat that could support the Miami tiger beetle.
All but 4 ac 1 ha of Unit 13 overlaps with designated critical habitat for Bartrams scrub-hairstreak butterfly, Carters small-flowered flax, and Florida brickell-bush. Additionally, approximately 62 ac 25 ha or 77
percent of Unit 13 is enrolled in the NFC program.
Unit 14: Richmond Pine Rocklands Unit 14 consists of approximately 1,455 ac 589 ha in Miami-Dade County. Landownership in this unit is split among Federal 488 ac 198 ha, county 844 ac 341 ha, and private 123 ac 50 ha. This unit is currently occupied by the Miami tiger beetle, which has been documented from four contiguous parcels within the Richmond Pine Rocklands: Zoo Miami
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Pine Rockland Preserve Zoo Miami, Larry and Penny Thompson Park, U.S.
Coast Guard, and University of Miamis Center for Southeastern Tropical Advanced Remote Sensing property CSTARS. Miami tiger beetles within the four contiguous occupied parcels in the Richmond population are within close proximity to each other with connecting patches of habitat with few or no barriers between parcels. Given the contiguous habitat with few barriers to dispersal, frequent adult movement among individuals is likely, and the occupied Richmond parcels probably represent a single population Knisley 2015b, p. 10.
The unit also includes areas of pine rockland habitat containing all of the physical and biological features essential to the conservation of the species that are adjacent to sites with documented occurrences. The complex, including these parcels, contains all of the essential features physical or biological featuresincluding pine rockland habitat of sufficient size with open or sparsely vegetated sandy areas that allow for thermoregulation, foraging, egg-laying, larval development, species dispersal, and population expansion, and natural or artificial disturbance regimes. The complex as a whole protects the occupied sites within the Richmond population, provides dispersal corridors for the Richmond population, provides potential habitat for population expansion, and supports prey-base populations. Being only one of two sites known to be currently occupied by the Miami tiger beetle, this complex is important to the Miami tiger beetle to ensure redundancy for the species and to contribute to the species viability.
The physical or biological features in this unit may require additional special management considerations or protection to address threats of habitat loss and fragmentation, inadequate fire management, vegetation encroachment, collection, small population size, and sea level rise. In some cases, these threats are being addressed or coordinated with our partners and landowners to implement needed actions.
Approximately 776 ac 314 ha or 53
percent of Unit 14 is enrolled in the NFC program. In addition, of the approximately 1,455 ac 589 ha of critical habitat proposed for the Miami tiger beetle in Unit 14, about 937 ac 379
ha overlap with designated critical habitat for Bartrams scrub-hairstreak butterfly, Florida leafwing butterfly, Carters small-flowered flax, and Florida brickell-bush. Therefore, approximately 518 ac 210 ha of proposed critical
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