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Articles 61 - 68 of 68
Full-Text Articles in Other Ecology and Evolutionary Biology
Seeds Of Resistance: Towards A Revolutionary Critical Ecopedagogy, Peter Mclaren
Seeds Of Resistance: Towards A Revolutionary Critical Ecopedagogy, Peter Mclaren
Education Faculty Articles and Research
The death throes of mother earth are imminent unless we decelerate the planetary ecological crisis. Critical educators, who have addressed with firm commitment topics of race, class, gender, sexuality, disability, and other social justice issues are casting their eyes to the antagonism between capitalism and nature to ask themselves how we can rationally regulate the human metabolic relation with nature. As the global power complex reduces human life and mother earth to mere production and consumption, critical revolutionary ecopedagogy is developing new, unalienated forms of selfpresence. Ecopedagogy is inspired by and inspires a new social arc, rooted in practices of …
Leaf Traits Within Communities: Context May Affect The Mapping Of Traits To Function, Jennifer L. Funk, William K. Cornwell
Leaf Traits Within Communities: Context May Affect The Mapping Of Traits To Function, Jennifer L. Funk, William K. Cornwell
Biology, Chemistry, and Environmental Sciences Faculty Articles and Research
The leaf economics spectrum (LES) has revolutionized the way many ecologists think about quantifying plant ecological trade-offs. In particular, the LES has connected a clear functional trade-off (long-lived leaves with slow carbon capture vs. short-lived leaves with fast carbon capture) to a handful of easily measured leaf traits. Building on this work, community ecologists are now able to quickly assess species carbon-capture strategies, which may have implications for community-level patterns such as competition or succession. However, there are a number of steps in this logic that require careful examination, and a potential danger arises when interpreting leaf-trait variation among species …
High Rate Of Recent Transposable Element–Induced Adaptation In Drosophila Melanogaster, Josefa Gonzalez, Kapa Lenkov, Mikhail Lipatov, J. Michael Macpherson, Dmitri A. Petrov
High Rate Of Recent Transposable Element–Induced Adaptation In Drosophila Melanogaster, Josefa Gonzalez, Kapa Lenkov, Mikhail Lipatov, J. Michael Macpherson, Dmitri A. Petrov
Biology, Chemistry, and Environmental Sciences Faculty Articles and Research
Although transposable elements (TEs) are known to be potent sources of mutation, their contribution to the generation of recent adaptive changes has never been systematically assessed. In this work, we conduct a genome-wide screen for adaptive TE insertions in Drosophila melanogaster that have taken place during or after the spread of this species out of Africa. We determine population frequencies of 902 of the 1,572 TEs in Release 3 of the D. melanogaster genome and identify a set of 13 putatively adaptive TEs. These 13 TEs increased in population frequency sharply after the spread out of Africa. We argue that …
Effect Of Wave Action On Movement In The Owl Limpet, Lottia Gigantea, In Santa Cruz, California, William G. Wright, James W. Nybakken
Effect Of Wave Action On Movement In The Owl Limpet, Lottia Gigantea, In Santa Cruz, California, William G. Wright, James W. Nybakken
Biology, Chemistry, and Environmental Sciences Faculty Articles and Research
The critical role of wave energy in the ecology of nearshore organisms is widely accepted, based primarily on biotic correlations over large scales of time and space. Much less is known about how large waves impact the behavioral ecology of individual organisms. Theoretical considerations and measurements of tenacity predict that intertidal gastropods should minimize the chances of dislodgement during periods of high waves by remaining stationary. We tested this prediction by observing a population of the owl limpet, Lottia gigantea G. B. Sowerby I, 1834, in a range of sea conditions. We found the proportion of the population moving during …
Pathways Of Anaerobic Carbon Cycling Across An Ombrotrophic–Minerotrophic Peatland Gradient, Jason K. Keller, Scott D. Bridgham
Pathways Of Anaerobic Carbon Cycling Across An Ombrotrophic–Minerotrophic Peatland Gradient, Jason K. Keller, Scott D. Bridgham
Biology, Chemistry, and Environmental Sciences Faculty Articles and Research
Peatland soils represent globally significant stores of carbon, and understanding carbon cycling pathways in these ecosystems has important implications for global climate change. We measured aceticlastic and autotrophic methanogenesis, sulfate reduction, denitrification, and iron reduction in a bog, an intermediate fen, and a rich fen in the Upper Peninsula of Michigan for one growing season. In 3-d anaerobic incubations of slurried peat, denitrification and iron reduction were minor components of anaerobic carbon mineralization. Experiments using 14C-labeled methanogenic substrates showed that methanogenesis in these peatlands was primarily through the aceticlastic pathway, except early in the growing season in more ombrotrophic peatlands, …
Nutrient Control Of Microbial Carbon Cycling Along An Ombrotrophicminerotrophic Peatland Gradient, Jason K. Keller, Angela K. Bauers, Scott D. Bridgham, Laurie E. Kellogg, Colleen M. Iversen
Nutrient Control Of Microbial Carbon Cycling Along An Ombrotrophicminerotrophic Peatland Gradient, Jason K. Keller, Angela K. Bauers, Scott D. Bridgham, Laurie E. Kellogg, Colleen M. Iversen
Biology, Chemistry, and Environmental Sciences Faculty Articles and Research
Future climate change and other anthropogenic activities are likely to increase nutrient availability in many peatlands, and it is important to understand how these additional nutrients will influence peatland carbon cycling. We investigated the effects of nitrogen and phosphorus on aerobic CH4 oxidation, anaerobic carbon mineralization (as CO2 and CH4 production), and anaerobic nutrient mineralization in a bog, an intermediate fen, and a rich fen in the Upper Peninsula of Michigan. We utilized a 5-week laboratory nutrient amendment experiment in conjunction with a 6-year field nutrient fertilization experiment to consider how the relative response to nitrogen and phosphorus differed among …
Influence Of Nutrient Availability, Stand Age, And Canopy Structure On Isoprene Flux In A Eucalyptus Saligna Experimental Forest, Jennifer L. Funk, Christian P. Giardina, Alexander Knohl, Manuel T. Lerdau
Influence Of Nutrient Availability, Stand Age, And Canopy Structure On Isoprene Flux In A Eucalyptus Saligna Experimental Forest, Jennifer L. Funk, Christian P. Giardina, Alexander Knohl, Manuel T. Lerdau
Biology, Chemistry, and Environmental Sciences Faculty Articles and Research
Eucalyptus plantations occupy approximately 10 million ha of land in the tropics and, increasingly, afforestation and reforestation projects are relying on this genus to provide rapid occupation of degraded sites, large quantities of high-quality wood products, and high rates of carbon sequestration. Members of the genus Eucalyptus are also very high emitters of isoprene, the dominant volatile organic compound emitted by trees in tropical ecosystems, which significantly influences the oxidative capacity of the atmosphere. While fertilization growth response of these trees has been intensively studied, little is known about how fertilization and tree age alter isoprene production from plantations of …
Authorship In Ecology: Attribution, Accountability, And Responsibility, Jake F. Weltzin, R. Travis Belote, Leigh T. Williams, Jason K. Keller, E. Cayenne Engel
Authorship In Ecology: Attribution, Accountability, And Responsibility, Jake F. Weltzin, R. Travis Belote, Leigh T. Williams, Jason K. Keller, E. Cayenne Engel
Biology, Chemistry, and Environmental Sciences Faculty Articles and Research
Quality and quantity of publications are among the most important measures determining the success of ecologists. The past 50 years have seen a steady rise in the number of researchers and collaborative manuscripts, and a corresponding increase in multi-authored articles. Despite these increases, there remains a shortage of useful and definitive guidelines to aid ecologists in addressing authorship issues, leading to a lack of consistency in what the term “author” really means. Deciding where to draw the line between those who have earned authorship and those who are more appropriately credited in the acknowledgments may be one of the more …