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Displaying 291 - 300 of 1,323 Publications
- Esta publicación es un esfuerzo colaborativo entre el Instituto Internacional de Dasonomía Tropical y el Bosque Nacional El Yunque para proveer mapas y análisis de información espacial actualizados sobre una importante reserva natural en Puerto Rico y el único bosque tropical dentro del Sistema de Bosques Nacionales de los Estados Unidos. El Atlas del Bosque Nacional El Yunque sirve como una herramienta complementaria del Informe de Evaluación del Plan del Bosque Nacional El Yunque del 2014, Fase Uno, bajo el Reglamento de Planificación del Servicio Forestal de EE.UU. de 2012. El informe...AuthorsMaya Quinones, Isabel K. Parés-Ramos, William A. Gould, Grizelle Gonzalez, Kathleen McGinley, Pedro RíosKeywordsSourceGeneral Technical Report.Year2018
- Consumers can alter decomposition rates through both feces and selective feeding in many ecosystems, but these combined effects have seldom been examined in tropical ecosystems. Members of the detrital food web (litter-feeders or microbivores) should presumably have greater effects on decomposition than herbivores, members of the green food web. Using litterbag experiments within a field enclosure experiment, we determined the relative effects of common litter snails (Megalomastoma croceum) and herbivorous walking sticks (Lamponius portoricensis) on litter composition, decomposition rates,...AuthorsChelse M. Prather, Gary E. Belovsky, Sharon A. Cantrell, Grizelle GonzalezKeywordsSourceEcologyYear2018
- Through litter decomposition enormous amounts of carbon is emitted to the atmosphere. Numerous large-scale decomposition experiments have been conducted focusing on this fundamental soil process in order to understand the controls on the terrestrial carbon transfer to the atmosphere. However, previous studies were mostly based on site-specific litter and methodologies, adding major uncertainty to syntheses, comparisons and metaanalyses across different experiments and sites. In the TeaComposition initiative, the potential litter decomposition is investigated by using standardized substrates...AuthorsAndré-Jean Francez, Andrea Fischer, Andreas Bohner, Andrey Malyshev, Andrijana Andrić, Andy Smith, Angela Stanisci, Anikó Seres, Anja Schmidt, Anna Avila, Anne Probst, Annie Ouin, Anzar A. Khuroo, Arne Verstraeten, Arely N. Palabral-Aguilera, Artur Stefanski, Aurora Gaxiola, Bart Muys, Bernard Bosman, Bernd Ahrends, Bill Parker, Birgit Sattler, Bo Yang, Bohdan Juráni, Brigitta Erschbamer, Carmen Eugenia Rodriguez Ortiz, Casper T. Christiansen, E. Carol Adair, Céline Meredieu, Cendrine Mony, Charles A. Nock, Chi-Ling Chen, Chiao-Ping Wang, Christel Baum, Christian Rixen, Christine Delire, Christophe Piscart, Christopher Andrews, Corinna Rebmann, Cristina Branquinho, Dana Polyanskaya, David Fuentes Delgado, Dirk Wundram, Diyaa Radeideh, Eduardo Ordóñez-Regil, Edward Crawford, Elena Preda, Elena Tropina, Elli Groner, Eric Lucot, Erzsébet Hornung, Esperança Gacia, Esther Lévesque, Evanilde Benedito, Evgeny A. Davydov, Evy Ampoorter, Fabio Padilha Bolzan, Felipe Varela, Ferdinand Kristöfel, Fernando T. Maestre, Florence Maunoury-Danger, Florian Hofhansl, Florian Kitz, Flurin Sutter, Francisco Cuesta, Francisco de Almeida Lobo, Franco Leandro de Souza, Frank Berninger, Franz Zehetner, Georg Wohlfahrt, George Vourlitis, Geovana Carreño-Rocabado, Gina Arena, Gisele Daiane Pinha, Grizelle Gonzalez, Authors Additional, Ian Yesilonis, Authors Additional, Lindsey Rustad, al. et, Ika Djukic, Sebastian Kepfer-Rojas, Inger Kappel Schmidt, Ana Carolina Ruiz Fernández, Ana I. Sousa, Ana I. Lillebø, Klaus Steenberg Larsen, Claus Beier, Björn Berg, Kris Verheyen, Adriano Caliman, Alain Paquette, Alba Gutiérrez-Girón, Alberto Humber, Alejandro Valdecantos, Alessandro Petraglia, Heather Alexander, Algirdas Augustaitis, Amélie Saillard, Anderson da Rocha GrippKeywordsSourceScience of The Total EnvironmentYear2018
- The response of tropical forests to global warming is one of the largest uncertainties in predicting the future carbon balance of Earth. To determine the likely effects of elevated temperatures on tropical forest understory plants and soils, as well as other ecosystems, an infrared (IR) heater system was developed to provide in situ warming for the Tropical Responses to Altered Climate Experiment (TRACE) in the Luquillo Experimental Forest in Puerto Rico. Three replicate heated 4-m-diameter plots were warmed to maintain a 4°C increase in understory vegetation compared to three unheated...AuthorsAura M. Alonso-Rodríguez, Molly A. Cavaleri, Sasha C. Reed, Grizelle Gonzalez, Tana E. Wood, Bruce A. KimballKeywordsSourceEcology and EvolutionYear2018
- Tropical forests play a critical role in carbon and water cycles at a global scale. Rapid climate change is anticipated in tropical regions over the coming decades and, under a warmer and drier climate, tropical forests are likely to be net sources of carbon rather than sinks. However, our understanding of tropical forest response and feedback to climate change is very limited. Efforts to model climate change impacts on carbon fluxes in tropical forests have not reached a consensus. Here, we use the Ecosystem Demography model (ED2) to predict carbon fluxes of a Puerto Rican tropical forest...AuthorsXiaohui Feng, María Uriarte, Grizelle Gonzalez, Sasha Reed, Jill Thompson, Jess K. Zimmerman, Lora MurphyKeywordsSourceGlobal Change BiologyYear2018
- Abstract Assessing the relationships between weather patterns and the likelihood of fire occurrence in the Caribbean has not been as central to climate change research as in temperate regions, due in part to the smaller extent of individual fires. However, the cumulative effect of small frequent fires can shape large landscapes, and fire-prone ecosystems are abundant in the tropics. Climate change has the potential to greatly expand fire-prone areas to moist and wet tropical forests and grasslands that have been traditionally less fire-prone, and to extend and create more temporal variabili...AuthorsAshley Van Beusekom, William A. Gould, A. Carolina Monmany, Azad Henareh Khalyani, Maya Quinones, Stephen J. Fain, Maria José Andrade-Núñez, Grizelle GonzalezKeywordsSourceClimatic ChangeYear2018
- The major goal of my dissertation was to understand the effect of urban development on biodiversity conservation in Puerto Rico. To accomplish this goal I: 1) described how much and what biodiversity occurs inside the network of terrestrial protected areas, 2) quantified pressure from urban development and human population around protected areas, and 3) assessed how urban development affects the distribution of anurans and reptiles along an urban-rural gradientAuthorsJessica Castro PrietoKeywordsSourcePh.D. dissertation, University of Puerto Rico Río Piedras. 105 pp.Year2017
- Chapter I of this thesis collects general information of green roofs and evaluates the principles of this topic. It covers GR description, design, potential benefits, and climate change. The chapter also includes information about the green roofs in the tropical zones around the globe, and more specifically in Puerto Rico. In Chapter II a vegetation analysis of 4 GRs in San Juan, Puerto Rico was undertaken. The International Institute of Tropical Forestry (IITF) facilities were used as well as an older green roof located in the University of Puerto Rico. The IITF green roofs possessed the...AuthorsIana F. Grullón–PenkovaKeywordsSourceMaster's Thesis, University of Puerto Rico Río Piedras. 66 p.Year2017
- is report describes the e ects of Hurricanes Irma (6 Sept.) and Maria (20 Sept.) in 2017 on bird populations in northeastern Puerto Rico by comparing the Fajardo Christmas Bird Count (FCBC) post-hurricane results (17 Dec. 2017) with pre-hurricane results (18 Dec. 2016). Although the search e ort, measured as party hours, was less aer the hurricane (45 vs. 54), both FCBCs used similar procedures and relied on volunteers who counted birds in a circular area prescribed by a diameter of 15 miles. Total numbers of individual birds decreased aer the hurricanes compared to the 2016 pre-hurrican...AuthorsJoseph M. Wunderle Jr.SourceActa Científica, 31(1-3):18-33.Year2017
- Se estudió la anatomía de porciones juveniles de tallos, en trece especies de Cactaceae que crecen en los estados Lara y Falcón, a fin de obtener información biológica que pueda contribuir a delimitarlas taxonómicamente. Las especies estudiadas fueron: Acanthocereus tetragonus, Cilindropuntia caribaea, Epiphyllum hookerii, Hylocereus lemairei, Melocactus curvispinus ssp. curvispinus, Opuntia caracasana, O. cf. bisetosa, Pilosocereus moritzianus, Praecereus euchlorus, Rhipsalis baccifera, Selenicereus inermis, Subpilosocereus russellianus y Stenocereus griseus. Se recolectaron trozos de...AuthorsDamelis Jáuregui, Marina García, Ernesto MedinaKeywordsSourcePittieria. 41: 24-39.Year2017