Results 161 to 170 of about 18,574 (298)

The impact of non-native trees on galling and herbivory in New York City across space and time. [PDF]

open access: yesOecologia
Engel LD   +7 more
europepmc   +1 more source

Canopy position and tree size structure the distribution of honeydew‐producing scale insects (Hemiptera: Coccoidea) in a temperate hardwood forest

open access: yesEcological Entomology, EarlyView.
Scale insect abundance peaked in the upper canopy of sugar maples. Parthenolecanium peaked on older internodes; Lepidosaphes on the current leader. Internodes longer than the previous carried more scales; wider ones fewer. Abstract Forest canopies are vertically stratified habitats in which microclimate and host tissue quality vary with height.
Susan M. Frye   +2 more
wiley   +1 more source

Atlantic trade and the West African market economy: New evidence from cowry imports, 1650–1905

open access: yesThe Economic History Review, EarlyView.
Abstract Between the seventeenth and twentieth centuries, billions of cowries arrived in West Africa, leaving one of the few quantitative traces available for historians to measure the Atlantic trade's impact on the precolonial market economy. Yet, current estimates substantially underestimate the volume of cowry imports.
María José Pont Cháfer
wiley   +1 more source

Dual‐aim purpose strategies and organizational design solutions

open access: yesEuropean Management Review, EarlyView.
Abstract This paper advances theory on the strategic dimensions of corporate purpose by exploring how organizations design for a dual‐aim purpose—pursuing both financial and pro‐social objectives that are inherently in tension. While earlier research highlights purpose as a unifying force that motivates action and guides strategic decision‐making, we ...
Johanna E. Pregmark   +2 more
wiley   +1 more source

Radiometric Constraints on the Timing, Tempo, and Effects of Large Igneous Province Emplacement

open access: yesGeophysical Monograph Series, Page 27-82., 2021

Exploring the links between Large Igneous Provinces and dramatic environmental impact

An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Jennifer Kasbohm   +2 more
wiley  

+1 more source

Measuring Bubbles via Put‐Call Disparity: A Model‐Free Approach

open access: yesFinancial Management, EarlyView.
ABSTRACT This paper uses violations of put‐call parity to provide simple lower and upper bounds for measuring the size of asset price bubbles. Assuming only no‐arbitrage, this bubble detection approach avoids restrictive parametric model assumptions. We show that put‐call disparity provides a bubble's lower bound, and the lowest price of an out‐of‐the ...
Robert A. Jarrow, Simon S. Kwok
wiley   +1 more source

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