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- The Alaska Arctic Vegetation Archive (AVA-AK, GIVD-ID: NA-US-014) is a free, publically available database archive of vegetation-plot data from the Arctic tundra region of northern Alaska. The archive currently contains 24 datasets with 3,026 non-overlapping plots. Of these, 74% have geolocation data with 25-m or better precision. Species cover data and header data are stored in a Turboveg database. A standardized Pan Arctic Species List provides a consistent nomenclature for vascular plants, bryophytes, and lichens in the archive. A web-based online Alaska Arctic Geoecological Atlas...AuthorsDonald A. Walker, Amy L. Breen, Lisa A. Druckenmiller, Lisa W. Wirth, Will Fisher, Martha K. Raynolds, Jozef Šibík, Marilyn D. Walker, Stephan Hennekens, Keith Boggs, Tina Boucher, Marcel Buchhorn, Helga Bültmann, David J. Cooper, Fred J.A Daniëls, Scott J. Davidson, James J. Ebersole, Sara C. Elmendorf, Howard E. Epstein, William A. Gould, Robert D. Hollister, Colleen M. Iversen, M. Torre Jorgenson, Anja Kade, Michael T. Lee, William H. MacKenzie, Robert K. Peet, Jana L. Peirce, Udo Schickhoff, Victoria L. Sloan, Stephen S. Talbot, Craig E. Tweedie, Sandra Villarreal, Patrick J. Webber, Donatella ZonaKeywordsSourcePhytocoenologia. 46(2): 221-229.Year2016
- Deforestation rates have declined in the Brazilian Amazon since 2005, yet degradation from logging, fire, and fragmentation has continued in frontier forests. In this study we quantified the aboveground carbon density (ACD) in intact and degraded forests using the largest data set of integrated forest inventory plots (n = 359) and airborne lidar data (18,000 ha) assembled to date for the Brazilian Amazon. We developed statistical models relating inventory ACD estimates to lidar metrics that explained 70% of the variance across forest types. Airborne lidar-ACD estimates for intact forests...AuthorsMarcos Longo, Michael Keller, Maiza N. dos-Santos, Veronika Leitold, Ekena R. Pinagé, Alessandro Baccini, Sassan Saatchi, Euler M. Nogueira, Mateus Batistella, Douglas C. MortonKeywordsSourceGlobal Biogeochemical Cycles. 30(11): 1639-1660.Year2016
- This report presents the results of the fifth global scientific assessment undertaken by the GFEP initiative. The report set out to gain deeper understanding of the meaning of illegal logging and related timber trade, its scale, drivers and consequences. It provides a structured synthesis of available scientific and expert knowledge on illegal logging and associated timber trade while adding to existing studies and reports by sharing new insights, including a criminology perspective and new information about timber and timber product trade flows as well as exploring future policy options...AuthorsB. Cashore, K. McGinley, S. Leipold, P.O. Cerutti, G. Bueno, S. et al. CarodenutoKeywordsSourceIllegal Logging and Related Timber Trade - dimensions, drivers, impacts and responses. A global scientific rapid response assesment report. . D. Kleinschmit, S. Mansourian, C. Wildburger and A. Purret (eds.), International Union of Forest Research Organizations (IUFRO), Vienna pp. 119-131.Year2016
- Resource utilization by earthworms affects soil C and N dynamics and further colonization of invasive earthworms. By applying 13C-labeled Tabebuia heterophylla leaves and 15N-labeled Andropogon glomeratus grass, we investigated resource utilization by three earthworm species (invasive endogeic Pontoscolex corethrurus, native anecic Estherella sp, and native endogeic Onychochaeta borincana) and their effects on soil C and N dynamics in Puerto Rican soils in a 22-day laboratory experiment. Changes of 13C/C and 15N/N in soils, earthworms, and microbial populations were analyzed to evaluate...AuthorsChing-Yu Huang, Grizelle Gonzalez, Paul F. HendrixKeywordsSourceForestsYear2016
- Seasonally dry tropical forests are distributed across Latin America and the Caribbean and are highly threatened, with less than 10% of their original extent remaining in many countries. Using 835 inventories covering 4660 species of woody plants, we show marked floristic turnover among inventories and regions, which may be higher than in other neotropical biomes, such as savanna. Such high floristic turnover indicates that numerous conservation areas across many countries will be needed to protect the full diversity of tropical dry forests. Our results provide a scientific framework...AuthorsK. Banda-R, A. Delgado-Salinas, K. G. Dexter, R. Linares-Palomino, A. Oliveira-Filho, D. Prado, M. Pullan, C. Quintana, R. Riina, G. M. Rodriguez M., J. Weintritt, P. Acevedo-Rodriguez, J. Adarve, E. Alvarez, A. Aranguren B., J. C. Arteaga, G. Aymard, A. Castano, N. Ceballos-Mago, A. Cogollo, H. Cuadros, F. Delgado, W. Devia, H. Duenas, L. Fajardo, A. Fernandez, M. A. Fernandez, J. Franklin, E. H. Freid, L. A. Galetti, R. Gonto, R. Gonzalez-M., R. Graveson, Eileen Helmer, A. Idarraga, R. Lopez, H. Marcano-Vega, O. G. Martinez, H. M. Maturo, M. McDonald, K. McLaren, O. Melo, F. Mijares, V. Mogni, D. Molina, N. d. P. Moreno, J. M. Nassar, D. M. Neves, L. J. Oakley, M. Oatham, A. R. Olvera-Luna, F. F. Pezzini, O. J. R. Dominguez, M. E. Rios, O. Rivera, N. Rodriguez, A. Rojas, T. Sarkinen, R. Sanchez, M. Smith, C. Vargas, B. Villanueva, R. T. PenningtonKeywordsSourceScienceYear2016
- Satellite-derived remote-sensing products are providing a modern circumpolar perspective of Arctic vegetation and its changes, but this new view is dependent on a long heritage of ground-based observations in the Arctic. Several products of the Conservation of Arctic Flora and Fauna are key to our current understanding.Wereview aspects of the PanArctic Flora, the Circumpolar Arctic Vegetation Map, the Arctic Biodiversity Assessment, and the Arctic Vegetation Archive (AVA) as they relate to efforts to describe and map the vegetation, plant biomass, and biodiversity of the Arctic at circumpol...AuthorsD A Walker, F J A Daniels, I Alsos, U S Bhatt, A L Breen, M Buchhorn, H Bultmann, L A Druckenmiller, M E Edwards, D Ehrich, H E Epstein, William A. Gould, R A Ims, H Meltofte, M K Raynolds, J Sibik, S S Talbot, P J WebberSourceEnvironmental Research LettersYear2016
- There has been a recent proposal to change the way that biology is taught and learned in undergraduate biology programs in the USA so that students develop a better understanding of science and the natural world. Here, we use this new, recommended teaching– learning framework to assert that permanent forestry plots could be a valuable tool to help develop biology literacy in the Caribbean and to help reverse what we perceive to be a trend of increasing detachment from nature in our Caribbean undergraduate biology students.AuthorsH. Valles, C.M.S. CarringtonSourceCaribbean Naturalist Special issue no.1Year2016
- Between 2010 and 2012, Parc National de la Guadeloupe, Office National des Forêts, and Université des Antilles et de la Guyane established 9 permanent 1-ha plots in tropical rain forest of Basse-Terre Island (Guadeloupe). These plots comprise the Guadeloupian Forest Observatory, and are specifically designed for long-term tree growth measurements and forest-dynamics surveys. We marked more than 8000 trees with a diameter at breast height >10 cm and equipped them with tape dendrometers for measurement at 5-y intervals. We describe our field protocols for plot establishment and tree-growth...AuthorsY. Gall, A. Rousteau, G. Van LaereKeywordsSourceCaribbean Naturalist Special issue no.1Year2016
- The Golden-olive Woodpecker is a generalist species found in a wide range of habitats, being particularly common in coffee plantations within Nicaraguan cloud forests. Observations of an individual feeding at the base of Cecropia leaves revealed it was consuming Mullerian bodies that the Cecropia produces to feed Azteca ants as part of a host-inhabitant mutualistic symbiosis. This record further documents the plasticity of some species as they search for alternative sources of energy.AuthorsM.A. Torrez, Wayne J. Arendt, L. DiazKeywordsSourceWilson Journal of OrnithologyYear2016
- Carbon sequestration is a major ecosystem service provided by tropical forests. Especially in light of global climate change, understanding the drivers of forest productivity is of critical importance. Although abiotic conditions (e.g., precipitation) are known to influence forest productivity, ecological theory predicts that biodiversity may also have independent effects on productivity. We estimated standing aboveground biomass (AGB) in mature forests of Puerto Rico that span a strong precipitation gradient and 2 general soil types. With these data, we examined the independent and...AuthorsR. Muscarella, M. Uriarte, D.L. Erickson, N.G. Swenson, J.K. Zimmerman, W.J. KressSourceCaribbean Naturalist Special issue no.1Year2016