Athayde, Simone; Elineide Marques, Evandro Moretto, Brent Millikan, Stephanie Bohlman, Anthony Oliver-Smith, Philip M. Fearnside, Amintas N. Rossete, Mason Mathews, Bette Loiselle, Raffaele Vacca, Walterlina Brasil, Jynessa... more
Athayde, Simone; Elineide Marques, Evandro Moretto, Brent Millikan, Stephanie Bohlman, Anthony Oliver-Smith, Philip M. Fearnside, Amintas N. Rossete, Mason Mathews, Bette Loiselle, Raffaele Vacca, Walterlina Brasil, Jynessa Dutka-Gianelli, Theodore Melis, Carolina R. C. Doria & David Kaplan. 2019. Mapping research on hydropower and sustainability in the Brazilian Amazon: Advances, gaps in knowledge and future directions. Current Opinion in Environmental Sustainability 37: 50-69. https://doi.org/10.1016/j.cosust.2019.06.004
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Bird populations have declined in many parts of the world but most of those declines can be attributed to effects of human activities (e.g., habitat fragmentation); declines in areas unaffected by human activities are not common. We have... more
Bird populations have declined in many parts of the world but most of those declines can be attributed to effects of human activities (e.g., habitat fragmentation); declines in areas unaffected by human activities are not common. We have been sampling bird populations at an undisturbed site in lowland forest of eastern Ecuador annually since 2001 using a combination of mist nets and direct observations on two 100-ha plots. Bird numbers fluctuated on both plots during the first 8 years but did not show a consistent pattern of change. Since about 2008, numbers of birds on both plots have declined; capture rates in 2014 were ∼40% less than at the start of the study and observation rates were ∼50% less. Both understory and canopy species declined in abundance. Overall, insectivores showed the most pronounced declines but declines varied among trophic groups. The period from 2008 onward also was a period of stronger La Niña events which, at this study site, are associated with increased ...
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Research Interests: Geography, Seed Dispersal, Ecology, Ecuador, Seed production, and 16 moreBirds, Animals, Tropical forest, Fruit, Life Cycle, Melastomataceae, Oecologia, Plant population ecology, Germination, Ecosystem, Seedling, Fruit Production, Seedling Establishment, Population dynamic, Habitat Association, and Cumulant
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... In summary, canopy use by migrants is seasonal in lowland wet forest with abundance highest during fall and lowest during spring migration. ... The abundance and seasonality of forest canopy birds on Barro Colorado Island, Panama.... more
... In summary, canopy use by migrants is seasonal in lowland wet forest with abundance highest during fall and lowest during spring migration. ... The abundance and seasonality of forest canopy birds on Barro Colorado Island, Panama. Biotropica 12:241-251. ...
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Research Interests: Ornithology, Decision Making, Conservation Biology, Conservation, Brazilian Studies, and 13 moreBiogeography, Conservation planning, Biological Sciences, Environmental Sciences, Atlantic Forest, Species Distribution, Species Distribution Model, Reserve selection, Birds Ecology, Environmental Conditions, Conservation Priorities, False Negative, and False Positive
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Daily activity patterns of most Neotropical mammals are not well described although general patterns (nocturnal, diurnal) are known. yet general categories often do not reflect variation in activity over time or among different habitats... more
Daily activity patterns of most Neotropical mammals are not well described although general patterns (nocturnal, diurnal) are known. yet general categories often do not reflect variation in activity over time or among different habitats or regions. We used camera traps to learn more about how daily activity patterns of mammals vary at a site in lowland rainforest of Ecuador. Cameras were deployed along trails at Tiputini Biodiversity Station during two periods: January 2005 to August 2008 and February 2010 to January 2012. We obtained 3649 photographs of 32 species. There was a pronounced peak of overall activity in early morning (06:00 – 08:00 h), reflecting the combined activity of several species, including Mazama americana red brocket deer, Myoprocta pratti green acouchy, Pecari tajacu collared peccary, and Sciurus igniventris northern Amazon red squirrel, among others. Daily activity of some species (e.g. Tapirus terrestris South American tapir) differed between the two sample ...