Zobrazeno 1 - 10
of 72
pro vyhledávání: '"ERIK I. JOHNSON"'
Autor:
Joseph Youtz, Kelly D. Miller, Emerson K. Bowers, Samantha L. Rogers, Lesley P. Bulluck, Matthew Johnson, Brian D. Peer, Katie L. Percy, Erik I. Johnson, Elizabeth M. Ames, Christopher M. Tonra, Than J. Boves
Publikováno v:
Ecology and Evolution, Vol 10, Iss 19, Pp 10672-10686 (2020)
Abstract Bergmann’s rule is a well‐established, ecogeographical principle that states that body size varies positively with latitude, reflecting the thermoregulatory benefits of larger bodies as temperatures decline. However, this principle does
Externí odkaz:
https://doaj.org/article/714ac544d4b34ee38749df11d7c9a420
Autor:
Alicia R. Brunner, Bryant C. Dossman, Vitek Jirinec, Katie L. Percy, Christopher M. Tonra, Erik I. Johnson, Peter P. Marra
Publikováno v:
Journal of Field Ornithology, Vol 93, Iss 3, p 5 (2022)
Improving our understanding of migratory behaviors and connectivity is fundamental for identifying limiting factors and drivers of population decline. With advances in miniaturized tracking technology, we are now able to study these critical aspects
Externí odkaz:
https://doaj.org/article/3feb1e96983a46858d997a6a820d267f
Publikováno v:
Restoration Ecology.
Autor:
Angélica Hernández-Palma, Stephen R. Midway, Richard O. Bierregaard, Jared D. Wolfe, Cameron L. Rutt, Thomas E. Lovejoy, Vitek Jirinec, Erik I. Johnson, Luke L. Powell, Philip C. Stouffer
Publikováno v:
Ecology Letters. 24:186-195
How are rainforest birds faring in the Anthropocene? We use bird captures spanning > 35 years from 55 sites within a vast area of intact Amazonian rainforest to reveal reduced abundance of terrestrial and near-ground insectivores in the absence of de
Autor:
Luke L Powell, Cameron L Rutt, Karl Mokross, Jared D Wolfe, Erik I Johnson, Patricia F Rodrigues, Philip C Stouffer
Publikováno v:
Ornithology. 139
Woodcreepers (Dendrocolaptinae) represent a remarkably uniform group of brownish birds that move by hitching up tree trunks as they forage for arthropod prey. Despite these superficial similarities, we were able to uniquely differentiate the niches o
Autor:
Erik I. Johnson, Justin Lehman
Publikováno v:
Waterbirds. 44
Autor:
Erik I. Johnson
Publikováno v:
Southeastern Naturalist. 20
Hurricanes can have strong effects on wildlife populations and their habitats, with complex positive and negative outcomes. I demonstrate the utility of Audubon Christmas Bird Count (CBC) data by comparing results of the first Creole CBC after Hurric
Autor:
Thomas E. Lovejoy, Jared D. Wolfe, Ryan C. Burner, Gilberto Fernández-Arellano, Bruna R. Amaral, Richard O. Bierregaard, Philip C. Stouffer, Angélica Hernández-Palma, Cameron L. Rutt, Vitek Jirinec, Luke L. Powell, Erik I. Johnson
Publikováno v:
Science Advances
Description
Since 1980, 30 to 69% of species have shown reductions in mass, increases in wing length, and decreases in mass:wing ratio.
Warming from climate change is expected to reduce body size of endotherms, but studies from temperate sy
Since 1980, 30 to 69% of species have shown reductions in mass, increases in wing length, and decreases in mass:wing ratio.
Warming from climate change is expected to reduce body size of endotherms, but studies from temperate sy
Publikováno v:
Ornithology. 139
Determination of a bird’s age or cohort is critical for studies on avian demography, occurrence patterns, behavior, and conservation management. Age designations have largely been developed in north-temperate regions and utilize calendar-based or s
Autor:
ALIX E. MATTHEWS, THAN J. BOVES, ANDREW D. SWEET, ELIZABETH M. AMES, LESLEY P. BULLUCK, ERIK I. JOHNSON, MATTHEW JOHNSON, KATIE L. PERCY, DOUGLAS W. RAYBUCK, WENDY M. SCHELSKY, CHRISTOPHER M. TONRA, CATHERINE B. VIVERETTE, ASELA J. WIJERATNE
Publikováno v:
Zoosymposia. 22:47
Host specificity is a key element to our understanding of symbiont diversification and is driven by multiple macro- and microevolutionary processes. Broad scale (e.g., species-level) studies can uncover relevant processes such as cospeciation and hos