Results 161 to 170 of about 6,495 (249)

Demographic buffering in natural populations: A multi‐level perspective

open access: yesJournal of Animal Ecology, EarlyView.
We introduce a multi‐level framework that unites stochastic elasticities with nonlinear selection to test demographic buffering. Applying it across mammals reveals a key insight: ecological robustness to variability often decouples from evolutionary constraint, reshaping how we understand resilience under environmental stochasticity.
Gabriel Silva Santos   +4 more
wiley   +1 more source

Effects of temperature and browning on the functional response of a freshwater top predator

open access: yesJournal of Animal Ecology, EarlyView.
This study explores for the first time how temperature and browning affect the functional response of a freshwater piscivore, the northern pike. The authors find surprisingly weak effects of browning, challenging visual foraging theory. Pike displayed a rare dome‐shaped functional response in cold clear water, potentially driven by seasonal changes in ...
Viktor Nilsson‐Örtman   +2 more
wiley   +1 more source

The Impact of Credit and Training on Farmers Efficiency: A Semi‐Parametric Meta‐Frontier Analysis

open access: yesAustralian Journal of Agricultural and Resource Economics, EarlyView.
ABSTRACT Smallholder farmers in developing countries face several constraints, which affect their productivity. To reduce these constraints and enhance productivity, government and non‐governmental agencies implement programmes that provide credit and training to farmers.
Anthony Baffoe‐Bonnie   +1 more
wiley   +1 more source

Enumerating graph embeddings and partial-duals by genus and Euler genus [PDF]

open access: yesEnumerative Combinatorics and Applications, 2020
Jonathan L. Gross, Thomas W. Tucker
doaj  

Inflated Recommendations

open access: yesThe RAND Journal of Economics, EarlyView.
ABSTRACT Biased recommendations arise naturally in markets with heterogeneous consumers. We study a model in which a monopolist offers an experience good to a population of consumers with heterogeneous tastes and makes personalized purchase recommendations.
Martin Peitz, Anton Sobolev
wiley   +1 more source

Why Is Exclusivity in Broadcasting Rights Prevalent and Why Does Simple Regulation Fail?

open access: yesThe RAND Journal of Economics, EarlyView.
ABSTRACT Pay‐TV firms compete both downstream to attract viewers and upstream to acquire broadcasting rights. Because profits inherited from downstream competition satisfy a convexity property, allocating rights to the dominant firm maximizes the industry profit.
David Martimort, Jerome Pouyet
wiley   +1 more source

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