scholarly journals Ecology, Policy, and Puerto Rico: El Yunque National Forest

2017 ◽  
Vol 98 (4) ◽  
pp. 341-344
Author(s):  
Samantha Soto ◽  
Steffanie Munguía ◽  
Nana Yaa Boatemaa Britwum ◽  
Leandra Gonzalez ◽  
Celina Gray ◽  
...  
Keyword(s):  
Puerto Rico ◽  
National Forest

Controls on Soil Carbon Stocks in El Yunque National Forest, Puerto Rico

2014 ◽  
Vol 79 (1) ◽  
pp. 294-304 ◽  
Author(s):  
A. H. Johnson ◽  
Hao Xing Xing ◽  
F. N. Scatena
Keyword(s):  
Puerto Rico ◽  
Soil Carbon ◽  
Carbon Stocks ◽  
National Forest ◽  
Soil Carbon Stocks

scholarly journals The Integration of TLS and Continuous GPS to Study Landslide Deformation: A Case Study in Puerto Rico

2011 ◽  
Vol 1 (1) ◽  
pp. 25-34 ◽  
Author(s):  
G. Wang ◽  
D. Philips ◽  
J. Joyce ◽  
F. Rivera
Keyword(s):  
Time Series ◽  
Puerto Rico ◽  
Laser Scanning ◽  
Surface Deformation ◽  
Retaining Wall ◽  
National Forest ◽  
Data Sets ◽  
Landslide Deformation ◽  
Continuous Gps

The Integration of TLS and Continuous GPS to Study Landslide Deformation: A Case Study in Puerto RicoTerrestrial Laser Scanning (TLS) and Global Positioning System (GPS) technologies provide comprehensive information on ground surface deformation in both spatial and temporal domains. These two data sets are critical inputs for geometric and kinematic modeling of landslides. This paper demonstrates an integrated approach in the application of TLS and continuous GPS (CGPS) data sets to the study of an active landslide on a steep mountain slope in the El Yunque National Forest in Puerto Rico. Major displacements of this landslide in 2004 and 2005 caused the closing of one of three remaining access roads to the national forest. A retaining wall was constructed in 2009 to restrain the landslide and allow the road reopen. However, renewed displacements of the landslide in the first half of 2010 resulted in deformation and the eventual rupture of the retaining wall. Continuous GPS monitoring and two TLS campaigns were performed on the lower portion of the landslide over a three-month period from May to August 2010. The TLS data sets identified the limits and total volume of themoving mass, while the GPS data quantified the magnitude and direction of the displacements. A continuous heavy rainfall in late July 2010 triggered a rapid 2-3 meter displacement of the landslide that finally ruptured the retaining wall. The displacement time series of the rapid displacement is modeled using a fling-step pulse from which precise velocity and acceleration time series of the displacement are derived. The data acquired in this study have demonstrated the effectiveness and power of the integrating TLS and continuous GPS techniques for landslide studies.

An improved water budget for the El Yunque National Forest, Puerto Rico, as determined by the Water Supply Stress Index model

2018 ◽  
Author(s):  
Liangxia Zhang ◽  
Ge Sun ◽  
Erika Cohen ◽  
Steven G McNulty ◽  
Peter V Caldwell ◽  
...  
Keyword(s):  
Puerto Rico ◽  
Water Supply ◽  
Water Budget ◽  
Stress Index ◽  
National Forest ◽  
Index Model

Climate change effects in El Yunque National Forest, Puerto Rico, and the Caribbean region

2014 ◽  
Author(s):  
Lisa Nicole Jennings ◽  
Jamison Douglas ◽  
Emrys Treasure ◽  
Grizelle González
Keyword(s):  
Climate Change ◽  
Puerto Rico ◽  
Caribbean Region ◽  
National Forest ◽  
Climate Change Effects ◽  
The Caribbean

scholarly journals An Improved Water Budget for the El Yunque National Forest, Puerto Rico, as Determined by the Water Supply Stress Index Model

2018 ◽  
Vol 64 (3) ◽  
pp. 268-279
Author(s):  
Liangxia Zhang ◽  
Ge Sun ◽  
Erika Cohen ◽  
Steven G McNulty ◽  
Peter V Caldwell ◽  
...  
Keyword(s):  
Puerto Rico ◽  
Water Supply ◽  
Water Budget ◽  
Stress Index ◽  
National Forest ◽  
Index Model

scholarly journals Survival of Captive-Reared Puerto Rican Parrots Released in the Caribbean National Forest

The Condor ◽  
2005 ◽  
Vol 107 (2) ◽  
pp. 424-432 ◽  
Author(s):  
Thomas H. White ◽  
Jaime A. Collazo ◽  
Francisco J. Vilella
Keyword(s):  
Puerto Rico ◽  
Puerto Rican ◽  
Wild Population ◽  
Survival Rates ◽  
First Year ◽  
National Forest ◽  
Wild Female ◽  
Radio Transmitters ◽  
The Caribbean ◽  
Amazona Vittata

Abstract We report first-year survival for 34 captive-reared Puerto Rican Parrots (Amazona vittata) released in the Caribbean National Forest, Puerto Rico between 2000 and 2002. The purpose of the releases were to increase population size and the potential number of breeding individuals of the sole extant wild population, and to refine release protocols for eventual reintroduction of a second wild population elsewhere on the island. After extensive prerelease training, we released 10 parrots in 2000, 16 parrots in 2001, and eight parrots in 2002 ranging in age from 1–4 years old. All birds were equipped with radio-transmitters to monitor survival. The overall first-year survival estimate for the 34 parrots was 41% (CI = 22%–61%). Only one parrot died within the first week postrelease, with most (94%) surviving for at least eight weeks after release. Most (54%) documented mortalities were due to raptor predation, which claimed 21% of all released parrots. A captive-reared bird (male, age one), released in 2001, paired with a wild female and fledged two young in 2004. We also calculated survival based on 0% and 50% of observed predation losses and found hypothetical survival rates of 72% and 54%, respectively. Rigorous prerelease training and acclimation was believed to have improved initial postrelease parrot survival, and releasing mixed age-class groups suggests the potential for shortening the time to recruitment. Supervivencia de Individuos de Amazona vittata Criados en Cautiverio y Liberados en el Bosque Nacional del Caribe Resumen. Determinamos la supervivencia de 34 individuos de cotorras Amazona vittata criados en cautiverio y liberados en el Bosque Nacional del Caribe, Puerto Rico entre el 2000 y el 2002. El propósito de las liberaciones era aumentar el tamaño de la población y el número potencial de individuos reproductores en la única población silvestre remanente, y refinar los protocolos de liberación para eventualmente establecer una segunda población silvestre en la isla. Después de un adiestramiento extensivo, liberamos 10 cotorras en el 2000, 16 cotorras en el 2001, y ocho cotorras en el 2002 fluctuando en edades entre uno y cuatro años. Cada individuo se liberó con un radio transmisor para determinar su supervivencia. La tasa general de supervivencia para 34 cotorras después de un año fue de 41% (IC = 22–61%). Sólo una cotorra murió durante la primera semana post-liberación, con la mayoría (94%) sobreviviendo por lo menos ocho semanas después de liberadas. La mayoría (54%) de la mortandad se debió a la depredación por aves rapaces, la que reclamó 21% de todas las cotorras liberadas. Una cotorra criada en cautiverio (macho, un año de edad), y liberada en el 2001, se apareó con una hembra silvestre y produjeron dos volantones en el 2004. Reduciendo la mortandad por aves rapaces informada en este estudio en un 100%, o en un 50%, resultó en tasas hipotéticas de supervivencia del 72% y 54%, respectivamente. Creemos que el adiestramiento y la aclimatación rigurosa pre-liberación mejoraron la supervivencia inicial post-liberación, y que la liberación de grupos de cotorras de edades mixtas sugiere el potencial de acortar el tiempo de reclutamiento.

Draft Deposited ¡El Yunque se levanta! Interdisciplinarity and activism at the La Mina petroglyph site

2021 ◽  
Author(s):  
Rhianna C. Rogers ◽  
James W. Schuetz ◽  
Rex Cauldwell
Keyword(s):  
Puerto Rico ◽  
National Forest ◽  
Interdisciplinary Work ◽  
The People ◽  
Activist Anthropology

This interdisciplinary work utilizes ethnoarchaeology, ethnogeology, and activist anthropology to analyse the La Mina site, a previously unrecorded petroglyph site near the El Yunque National Forest in Municipio de Naguabo, Puerto Rico. This work highlights the importance of the site and the people who created and continue to protect them.

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