I am an ornithologist with strong interests in physiological, evolutionary and behavioral ecology. My current work explores the causes of temporal and spatial variation in the life histories of birds, focusing mostly on breeding biology and movements. With my students and collaborators, I have been studying everything about these birds that we can on the breeding grounds, from immunocompetence and telomere dynamics to flight performance and the composition of bacterial communities in their nests. We are interested in how changing climates and geographic variation in environments affect all aspects of the life histories of these birds, and in recent years, we are expanding our understanding of their life histories outside the breeding season, with studies of their diets, social behavior and movements. These tags, and many more like them, are energizing our studies of animal movements, and will fuel our studies for years to come on migration and dispersal. The other area of technological innovation that has sparked my interest of late is the ready availability of high-acuity computed tomography CT scanning at Cornell, which has led me to work, with Helen James at the Smithsonian, toward a web site that features a video tour of the anatomy of a member of every family of birds around the world. This brings me back to my undergrad fascination with anatomy and combines it with my career-long dedication to the broadest view of the diversity of life, signified by the recent completion of Bird Families of the World Lynx Edicions.
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Evaluating leaf litter beetle data sampled by Winkler extraction from Atlantic forest sites in southern Brazil. To evaluate the reliability of data obtained by Winkler extraction in Atlantic forest sites in southern Brazil, we studied litter beetle assemblages in secondary forests 5 to 55 years after abandonment and old-growth forests at two seasonally different points in time. For all regeneration stages, species density and abundance were lower in April compared to August; but, assemblage composition of the corresponding forest stages was similar in both months.
We suggest that sampling of small litter inhabiting beetles at different points in time using the Winkler technique reveals identical ecological patterns, which are more likely to be influenced by sample incompleteness than by differences in their assemblage composition. A strong relationship between litter quantity and beetle occurrences indicates the importance of this variable for the temporal species density pattern.
Additionally, the sampled beetle material was compared with beetle data obtained with pitfall traps in one old-growth forest. Few beetles with a body size too large to be sampled by Winkler extraction were only sampled with pitfall traps. This indicates that the local litter beetle fauna is dominated by small species. Hence, being aware of the exclusion of large beetles and beetle species occurring during the wet season, the Winkler method reveals a reliable picture of the local leaf litter beetle community.
Keywords: Coleoptera; comparison; pitfall traps; sampling method; seasonality.
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of data obtained by Winkler extraction in Atlantic forest sites in southern Brazil, for each study site-sampling date combination using the Jackknife 1 richness.
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This summer I spent a month in Belgium on an archaeological dig site. The purpose of the trip was to learn basic principles of archaeology while helping to uncover more of the ruins at the Walhain castle, where some of the oldest features of the structure date back to around While working on this site there was a focus on proper technique for using various tools to slowly uncover artifacts and new structures. There was careful attention to labeling artifacts and learning about subtle shifts in the soil types.
We were also taught the proper way to document the site with drawings, soil descriptions, and various other notations which will be kept as part of the official records for the site. While this was a lot of work there was also plenty of opportunity to travel and explore. One of the best parts of the experience was that I did not constantly feel like a tourist despite being in a different country and not knowing the language. I would highly recommend this experience to anyone who has any interest in Archaeology.
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Mount Pleasant, Sanpete, Utah. Death date. 14 June Baptism date. 2 May Baptism by. John L Levey. Father’s name. Ernest Winkler.
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Staff profile for John D. Winkler, Director, Forces and Resources Policy Center; Senior Behavioral Scientist at the RAND Corporation.
Please note that all units are reflected as “available” during our pre-leasing months of September-January and do not accurately reflect specific units available, depending on current resident renewals. These efficiency and one bedroom apartments are conveniently located just yards from campus and behind several restaurants you receive exclusive discounts at as a Winkler tenant. These units offer hardwood and tile flooring throughout.
High speed wireless internet, your own private storage unit included, and covered parking headline this unique property. We know you have much to do, and little time to get everything done. Four residents will receive parking passes at a location closer to campus approximately 50 yards from Winkler Oaks to park during their stay.
These units are in a great location to walk to class, restaurants and sporting events. There are also nearby Appalcart stops available for transportation. We are grateful Winkler properties are in high demand and pre-lease quickly for the upcoming leasing year, please remember to get your application in early! Note that we begin accepting applications in September for the following leasing year.
Boone, NC Triplex Heights on Green St.