A5102773262- Wildlife Ecology and Conservation
- Species Distribution and Climate Change
- Ecology and Vegetation Dynamics Studies
- Avian ecology and behavior
- Plant and animal studies
- Primate Behavior and Ecology
- Conservation, Biodiversity, and Resource Management
- Coral and Marine Ecosystems Studies
- Animal Ecology and Behavior Studies
- Marine and coastal plant biology
- Marine Biology and Ecology Research
- Rangeland and Wildlife Management
- Remote Sensing in Agriculture
- Geology and Paleoclimatology Research
- Marine and fisheries research
- Bird parasitology and diseases
- Fish Ecology and Management Studies
- Geochemistry and Geologic Mapping
- Animal Behavior and Reproduction
- Insect and Pesticide Research
- Wildlife-Road Interactions and Conservation
- Environmental Toxicology and Ecotoxicology
- Pesticide Exposure and Toxicity
- Forest ecology and management
- Invertebrate Taxonomy and Ecology
CURE International UK
2023
Colorado Parks and Wildlife
2022
World Wildlife Fund
2002-2020
University of Oxford
2020
Imperial College London
2019
Victim Support
2019
University of East Anglia
2012
The University of Sydney
2009
WWF Colombia
2009
Organization for Tropical Studies
1995-2004
Abstract Mammal inventories in tropical forests are often difficult to carry out, and many elusive species missed or only reported from interviews with local people. Camera traps offer a new tool for conducting of large‐ medium‐sized terrestrial mammals. We evaluated the efficiency camera based on data two surveys carried out at single site during 2 consecutive years. The survey efforts were 1440 2340 days, 75 86% 28 mammal known occur recorded. Capture frequencies different highly...
Florida Bay is a shallow, seagrass‐dominated embayment on the southern tip of Florida. Variation C, N, and P content leaves Thalassia testudinum was measured two spatial scales: locally (10–100 m) in relation to point source nutrients associated with bird colony eastern regionally (10– 100 km) across all bay. Locally, decreased from high 0.16% (wt/wt) 30 m nutrient low 0.08% 120 source; C N (34.9 2.1%) independent distance source. Due variations content, : P, but not varied locally....
At sites near Manaus, Amazonas, Brazil we measured the impact of forest fragmentation on populations male euglossine bees. The visitation rates 15 species bees to three chemical attractants were determined for continuous forest; isolated 1, 10, and 100 ha fragments; a cleared area. For most species, rate declined with fragment size, even though openings separating fragments tended be narrow (as little as m). Preand post-isolation comparisons individual exhibited same trend. Bee attracted...
Summary Over the last two decades, a large number of camera trap surveys have been carried out around world and traps proposed as an ideal tool for inventorying monitoring medium to large‐sized terrestrial vertebrates. However, few studies analysed data at community level. We developed multi‐session multi‐species occupancy model that allows us obtain estimates species richness combining from multiple (sessions). By estimating presence session‐level modelling detection probability each...
Abstract: We studied the habitat use, activity patterns and use of mineral licks by five species Amazonian ungulate using data from four 60-d camera trap surveys at two different sites in lowland rain forest Madre de Dios, Peru. Camera traps were set out regular grids with 40 43 stations covering an area 50 65 km 2 , as well licks. Using occupancy analysis we tested hypothesis that are spatially separated. The results showed grey brocket deer ( Mazama gouazoubira ) occurred almost...
The sociobiology of mixed species flocks is reviewed and used as a basis for evaluating the adaptive significance flocking. Virtually all data currently available deal with insectivores, so this review deals primarily those only minimal reference to frugivores granivores. Most insectivorous that participate in remain paired defend exclusive feeding territories year round. Territoriality restricts intraspecific group sizes single pairs or small family groups. Since territorial individuals are...
Leaf mass per area (LMA) is a trait of central importance to plant physiology and ecosystem function, but LMA patterns in the upper canopies humid tropical forests have proved elusive due tall species high diversity. We collected top-of-canopy leaf samples from 2873 individuals 57 sites spread across Neotropics, Australasia, Caribbean Pacific Islands quantify environmental taxonomic drivers variation, advance remote-sensing measures LMA. uncovered strong organization LMA, with accounting for...
We conducted an analysis of deforestation and forest disturbance from 2005-2011 in Masoala National Park, the largest federal protected area Madagascar. found that annual rate change 2010-2011 within park (1.27%) was considerably higher than 2005-2008 (0.99%), most recently published for all Although immediately following 2009 coup d'état were lower other time periods analyzed, longer-term increase over study period corroborates recent ground-based accounts increased illegal activities...
Long term (8 yr) continuous fertilization (via application of bird feces) established seagrass beds in Florida Bay, FL, USA caused a change the dominant species. Before fertilization, were Thalassia testudinum monoculture; after 8 yr Halodule wrightii made up 97% aboveground biomass. Fertilization had positive effect on standing crop T. for first two years experiment. The transition from testudinum-dominated to H. wrightii-dominated was dependent timing colonization sites by wrightii;...
Abstract Madagascar is a top global conservation priority for high rates of deforestation and endemism. Deforestation has been extensive, but impacts forest loss on biodiversity have not well quantified, especially nonvertebrates. We use generalized dissimilarity modeling (GDM) as basis estimating remaining at different points in time. predict that 9.1% species committed to extinction from between 1950 2000. This quantity higher than losses expected random the same total area, indicating...
Abstract The dynamics of foraging habitat use by long-legged wading birds was analyzed with respect to water-level fluctuation patterns in Florida Bay. Wading-bird presence at four sites situated sample the heterogeneity bay quantified repeated surveys collected throughout day and year. Models for availability were generated using data from continuous recorders, staff guages, profile maps. These models tested against survey data. Roseate Spoonbills (Ajaia ajaja) foraged on study areas...
SUMMARY (1) Our objective was to determine the effect of exposure an organophosphate pesticide (OP), dicrotophos (3-hydroxy-NN-dimethyl-cis-scrotonamide dimethyl phosphate), on care nestlings by wild female starlings (Sturnus vulgaris). (2) We selected twelve pairs active nests based synchrony in reproductive cycle. When were 10 days old (day 10), adult males captured and killed brood size adjusted four. The frequency temporal distribution sorties made each pair females feed their young...
Abstract: The forests of western Amazonia support high site-level biological diversity, yet regional community heterogeneity is poorly understood. Using data from line transect surveys at 37 forest sites in south-eastern Peru, we assessed whether local primate assemblages are heterogeneous the scale a major watershed. We examined patterns richness, abundance and structure as function type, hunting pressure, land-management regime geographic location. assemblage composition varied spatially...
Questions: Understanding distributions of tree species at landscape scales in tropical forests is a difficult task that could benefit from the recent development satellite imaging spectroscopy. We tested an application EO-1 Hyperion sensor to spectrally detect location five important taxa lowland humid southeastern Peru. Location: Peru, Departamento de Madre Díos. Methods: used linear discriminant analysis with stepwise selection procedure analyze two datasets (July and December 2006) choose...
Abstract We propose the wildlife premium mechanism as an innovation to conserve endangered large vertebrates. The performance‐based payment scheme would allow stakeholders in lower‐income countries generate revenue by recovering and maintaining threatened fauna that can also serve umbrella species (i.e., whose protection benefits other with which they co‐occur). There are 3 possible options for applying premium: option 1, embed premiums a carbon payment; 2, link related payment, but...