Search Results - "MAGNUSSON, WILLIAM E."

Temporal variation in black-caiman-nest predation in varzea of central Brazilian amazonia by Torralvo, Kelly, Botero-Arias, Robinson, Magnusson, William E

“…On the Amazon floodplain, the main predators of black caiman (Melanosuchus niger) eggs are jaguars (Panthera onca), tegu lizards (Tupinambis teguixim),…”
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Biodiversity: the chasm between what we know and we need to know by Magnusson, William E

“…In this review I focus on what we need to know to make decisions relevant to land-use planning. I discuss four questions: What information about the…”
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Distance to large rivers affects fish diversity patterns in highly dynamic streams of Central Amazonia by Stegmann, Lis F, Leitão, Rafael P, Zuanon, Jansen, Magnusson, William E

“…Longitudinal-zonation hypotheses generally predict gradual changes in fish composition from upstream to downstream due to changes in habitat conditions, but…”
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Building capacity in biodiversity monitoring at the global scale by Schmeller, Dirk S., Böhm, Monika, Arvanitidis, Christos, Barber-Meyer, Shannon, Brummitt, Neil, Chandler, Mark, Chatzinikolaou, Eva, Costello, Mark J., Ding, Hui, García-Moreno, Jaime, Gill, Mike, Haase, Peter, Jones, Miranda, Juillard, Romain, Magnusson, William E., Martin, Corinne S., McGeoch, Melodie, Mihoub, Jean-Baptiste, Pettorelli, Nathalie, Proença, Vânia, Peng, Cui, Regan, Eugenie, Schmiedel, Ute, Simaika, John P., Weatherdon, Lauren, Waterman, Carly, Xu, Haigen, Belnap, Jayne

“…Human-driven global change is causing ongoing declines in biodiversity worldwide. In order to address these declines, decision-makers need accurate assessments…”
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Ground-Vegetation Clutter Affects Phyllostomid Bat Assemblage Structure in Lowland Amazonian Forest by Marciente, Rodrigo, Bobrowiec, Paulo Estefano D, Magnusson, William E

“…Vegetation clutter is a limiting factor for bats that forage near ground level, and may determine the distribution of species and guilds. However, many studies…”
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Density and Biomass Estimates by Removal for an Amazonian Crocodilian, Paleosuchus palpebrosus by Campos, Zilca, Magnusson, William E

“…Direct counts of crocodilians are rarely feasible and it is difficult to meet the assumptions of mark-recapture methods for most species in most habitats…”
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Anthropogenic landscape in southeastern Amazonia: contemporary impacts of low-intensity harvesting and dispersal of Brazil nuts by the Kayapó Indigenous people by Ribeiro, Maria Beatriz N, Jerozolimski, Adriano, de Robert, Pascale, Salles, Nilson V, Kayapó, Biribiri, Pimentel, Tania P, Magnusson, William E

“…Brazil nut, the Bertholletia excelsa seed, is one of the most important non-timber forest products in the Amazon Forest and the livelihoods of thousands of…”
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The effect of dam construction on the movement of dwarf caimans, Paleosuchus trigonatus and Paleosuchus palpebrosus, in Brazilian Amazonia by Campos, Zilca, Mourão, Guilherme, Magnusson, William E

“…Run-of-the-river hydroelectric dams cause changes in seasonal inundation of the floodplains, and this may cause displacement of semi-aquatic vertebrates…”
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Influence of body size, topography, food availability and tree-fall gaps on space use by yellow-footed tortoises (Chelonoidis denticulatus) in Central Amazonia by Tavares, Aline S, Morcatty, Thais Queiroz, Zuanon, Jansen, Magnusson, William E

“…Habitat selection and extension of the area used by a given species may vary during different phases of its life and are often determined by the distribution…”
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Territoriality of giant otter groups in an area with seasonal flooding by Leuchtenberger, Caroline, Magnusson, William E, Mourão, Guilherme

“…Territoriality carries costs and benefits, which are commonly affected by the spatial and temporal abundance and predictability of food, and by intruder…”
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Thermal physiology of Amazonian lizards (Reptilia: Squamata) by Diele-Viegas, Luisa M, Vitt, Laurie J, Sinervo, Barry, Colli, Guarino R, Werneck, Fernanda P, Miles, Donald B, Magnusson, William E, Santos, Juan C, Sette, Carla M, Caetano, Gabriel H O, Pontes, Emerson, Ávila-Pires, Teresa C S

“…We summarize thermal-biology data of 69 species of Amazonian lizards, including mode of thermoregulation and field-active body temperatures (Tb). We also…”
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Body size predicts ontogenetic nitrogen stable-isotope (δ15N) variation, but has little relationship with trophic level in ectotherm vertebrate predators by Villamarín, Francisco, Jardine, Timothy D., Bunn, Stuart E., Malvasio, Adriana, Piña, Carlos Ignacio, Jacobi, Cristina Mariana, Araújo, Diogo Dutra, de Brito, Elizângela Silva, de Moraes Carvalho, Felipe, da Costa, Igor David, Verdade, Luciano Martins, Lara, Neliton, de Camargo, Plínio Barbosa, Miorando, Priscila Saikoski, Portelinha, Thiago Costa Gonçalves, Marques, Thiago Simon, Magnusson, William E.

“…Large predators have disproportionate effects on their underlying food webs. Thus, appropriately assigning trophic positions has important conservation…”
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Limitations to the Use of Species-Distribution Models for Environmental-Impact Assessments in the Amazon by Carneiro, Lorena Ribeiro de A, Lima, Albertina P, Machado, Ricardo B, Magnusson, William E

“…Species-distribution models (SDM) are tools with potential to inform environmental-impact studies (EIA). However, they are not always appropriate and may…”
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eDNA in a bottleneck: Obstacles to fish metabarcoding studies in megadiverse freshwater systems by Jackman, Jake M., Benvenuto, Chiara, Coscia, Ilaria, Oliveira Carvalho, Cintia, Ready, Jonathan S., Boubli, Jean P., Magnusson, William E., McDevitt, Allan D., Guimarães Sales, Naiara

“…The current capacity of environmental DNA (eDNA) to provide accurate insights into the biodiversity of megadiverse regions (e.g., the Neotropics) requires…”
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Growth of Caiman crocodilus yacare in the Brazilian Pantanal by Campos, Zilca, Mourão, Guilherme, Coutinho, Marcos, Magnusson, William E

“…We studied growth of the caiman, Caiman crocodilus yacare, in the Brazilian Pantanal for 27 years between 1987 and 2013.We recaptured 647 of 7769 C. c. yacare…”
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Empowering Indigenous students to engage in Amazon conservation by Santorelli Junior, Sergio, Kaa'aoi, José Augusto Pirahã, Fraga, Rafael DE, Stegmann, Lis F, Bôlla, Daniela, Fernandes, Igor Yuri, Zuanon, Jansen, Magnusson, William E

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Environmental characteristics drive variation in Amazonian understorey bird assemblages by Menger, Juliana, Magnusson, William E, Anderson, Marti J, Schlegel, Martin, Pe'er, Guy, Henle, Klaus

“…Tropical bird assemblages display patterns of high alpha and beta diversity and, as tropical birds exhibit strong habitat specificity, their spatial…”
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Variation in aboveground tree live biomass in a central Amazonian Forest: Effects of soil and topography by de Castilho, Carolina V., Magnusson, William E., de Araújo, R. Nazaré O., Luizão, Regina C.C., Luizão, Flávio J., Lima, Albertina P., Higuchi, Niro

“…We used forest inventories, conducted in seventy-two 1-ha permanent plots to assess the variation in tree and palm aboveground live biomass (AGLB), and its…”
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How much variation in tree mortality is predicted by soil and topography in Central Amazonia? by de Toledo, José Julio, Magnusson, William E., Castilho, Carolina V., Nascimento, Henrique E.M.

“…► A small quantity of variation in tree mortality can be explained by soil and topography. ► Soil and topography can predict only mortality of small- and…”
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