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Guánica State Forest

Coordinates: 17°57′56″N 66°52′45″W / 17.96556°N 66.87917°W / 17.96556; -66.87917
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Guánica State Forest
Spanish: Bosque Estatal de Guánica
Bosque Seco de Guánica
"melón de costa" (Melocactus intortus)
Map
Map showing the location of Guánica State Forest
Map showing the location of Guánica State Forest
Geography
LocationGuánica, Guayanilla, Peñuelas, Ponce, Yauco
Coordinates17°57′56″N 66°52′45″W / 17.96556°N 66.87917°W / 17.96556; -66.87917
Area9,878 acres (39.97 km2)[1]
Administration
StatusPublic, Commonwealth
Established1919
Governing bodyPuerto Rico Department of Natural and Environmental Resources (DRNA)
Websitewww.drna.gobierno.pr
Ecology
WWF ClassificationPuerto Rican dry forests

The Guánica State Forest (Spanish: Bosque Estatal de Guánica), popularly known as the Guánica Dry Forest (Spanish: Bosque seco de Guánica) is a subtropical dry forest located in southwest Puerto Rico. The area was designated as a forest reserve in 1919 and a United Nations Biosphere Reserve in 1981.[2] It is considered the best preserved subtropical dry forest and the best example of dry forest in the Caribbean.[3]

With approximately 10,000 acres, it is the largest of the 20 state forests of Puerto Rico, and it extends over 5 municipalities: Guánica, Guayanilla, Peñuelas, Ponce, and Yauco (although the forest units located in the municipalities of Peñuelas and Ponce only consist of keys and small islands).[4]

History

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The dry forest area of southwestern Puerto Rico protected under the jurisdiction of the Guánica Dry Forest was first established in 1919 as a forest reserve. The United Nations recognized the ecological value of the forest in 1981 when it was designated a Biosphere Reserve, the second in Puerto Rico after El Yunque National Forest (then called the Caribbean National Forest). The forest was given further protections as a nature reserve on October 16, 1985, by the Puerto Rico Planning Board (Spanish: Junta De Planificación), and all provisions from Law No. 133 from 1975 were subsequently applied to the nature reserve.[4]

Geography

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Located in the dry orographic rain shadow of the Cordillera Central, Puerto Rico's driest area, temperatures in the forest are, on average, around 80 °F (27 °C) in shaded areas and 100 °F (38 °C) in exposed areas.[1] The average temperature is 25.3 °C (77.5 °F) and the average annual rainfall is 791 millimetres (31.1 in).[5]

Geology

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The dry forest is located on the Southern karst region of Puerto Rico. The soils in the state forest include limestone, fine and soft lime soil which include areas of sand and clay where deciduous plants grow, and sand and clay soils where evergreen plants thrive.[4][6]

Ecology

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The famous Guayacán Centenario.

The Guánica State Forest is of great natural complexity and scientific importance as it serves as a critical habitat to numerous species of animals and plants that are unique to the region. Its ecosystems include sandy beaches, rocky shores, mangrove forests, seagrass prairies, coral reefs, limestone caverns, saltwater lagoons, salt flats and different types of dry forests (both deciduous and evergreen).[4]

The last remaining natural population of Puerto Rican crested toads (Peltophryne lemur) can be found in the intermittent freshwater pools which are created by seasonal rains. This species proliferates in the natural conditions created by the karstic geology of the forest, and current efforts by the Association of Zoos and Aquariums (AZA) include breeding programs and projects to release individuals of this species in similar ecosystems in Coamo and in the Northern karst of Puerto Rico.[4]

Fauna

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Puerto Rican crested toad

Approximately half of Puerto Rico's birds and nine of sixteen the endemic bird species occur in the Guánica State Forest. In addition to the Puerto Rican crested toad, other protected animal species in the forest include the Puerto Rican vireo (Vireo latimeri), the Puerto Rican nightjar (Antrostomus noctitherus), the red land crab (Gecarcinus ruricola), and the Mona basket shrimp (Typhlatya monae). The dry forest is also one of the few habitats where the Cook's pallid anole (Anolis cooki) can be found. The coral reefs and maritime areas of the forest reserve are also home to numerous coral, animal and plant species, such as the West Indian manatee which feeds on seaweeds, found in underwater prairies in the reserve.[4]

Flora

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The vegetation in the forest is divided into three main groups: upland deciduous forest (which occupies 23.5 square kilometres or 9.1 square miles), semi-evergreen forest (7.2 square kilometres or 2.8 square miles), and scrub forest (5.8 square kilometres or 2.2 square miles).[7] Similar to other insular dry forests species diversity is low; between 30 and 50 tree species are found per hectare.[8] More than 700 plant species, of which 48 are endangered and 16 are endemic to the forest, occur within the forest. Some of the endangered plant species in the forest include the sebucan cactus (Leptocereus quadricostatus), the palo de rosa (Ottoschulzia rhodoxylon), the violeta tree (Polygala cowellii), and the critically endangered bariaco (Trichilia triacantha).[4] One of the most famous plant inhabitants of the forest is an old-growth guaiacwood tree or guayacán (Guaiacum officinale) often called the Guayacán Centenario ("the centenary guaiacwood") which could be as old as 1,000 years-old.[9]

Recreation

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The dry forest is open to visitors and some of its beaches are popular with tourists and locals alike. Fishing and biking are allowed in special designated areas, while scuba diving is also popular in the coral reefs and in the beaches. There are 12 hiking trails with varying difficulties open to visitors and the reserve is also popular for birdwatching.[4][10][11]

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See also

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References

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  1. ^ a b "Areas Protegida: Bosque Estatal de Guánica" (in Spanish). Archived from the original on April 17, 2007. Retrieved November 26, 2006.
  2. ^ "2006 Federal Register, 71 FR 48883". Archived from the original on September 30, 2006. Retrieved November 26, 2006.
  3. ^ Ewel, J.L. & J.L. Whitmore. 1973. The ecological life zones of Puerto Rico and the U.S. Virgin Islands. USDA For. Serv. Res. Pap. ITF-18.
  4. ^ a b c d e f g h Estado Libre Asociado de Puerto Rico, Departamento de Recursos Naturales y Ambientales (2008). "Bosques de Puerto Rico: Bosque Estatal de Guánica" (PDF).
  5. ^ Silander, S., H. Gil de Rubio, M. Miranda, and M. Vazquez. 1986. Los Bosques de Puerto Rico, Volume II. Compendio Enciclopédico de los Recursos Naturales de Puerto Rico. Puerto Rico Department of Natural Resources, San Juan, Puerto Rico.
  6. ^ "Bosque estatal de Guánica-Puerto Rico". www.prfrogui.com. Retrieved 2022-01-10.
  7. ^ Lugo, A. E., J. A. Gonzalez-Liboy, B. Cintrón, and K. Dugger. (1978) Structure, productivity and transpiration of a subtropical dry forest in Puerto Rico. Biotropica 10:278-291.
  8. ^ Murphy, P. G., and A. E. Lugo. (1986) Structure and biomass of a subtropical dry forest in Puerto Rico. Biotropica 18:89-96.
  9. ^ "El guayacán centenario de Guánica". Primera Hora (in Spanish). 2017-01-10. Retrieved 2022-01-10.
  10. ^ "Bosque Estatal de Guánica". Discover Puerto Rico. Retrieved 2022-01-10.
  11. ^ "Bosque Estatal de Guánica | Puerto Rico Attractions". Lonely Planet. Retrieved 2022-01-10.
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