Results 211 to 220 of about 4,859,609 (359)

Burrow Persistence and Spatial Distribution of Federally and State‐Protected Gopher Tortoise (Gopherus polyphemus) Populations in Southwest Alabama

open access: yesAnimal Conservation, EarlyView.
The gopher tortoise (Gopherus polyphemus), a keystone species and ecosystem engineer, has declined by ~80% over the past century due to primarily habitat loss. In a 28‐year resurvey of federally protected Mobile County and state‐protected Baldwin County, we found tortoise populations persisted at ~59% and ~31% of sites, respectively, with significant ...
Robin B. Lloyd Jr.   +4 more
wiley   +1 more source

Space-time analyticity of weak solutions to semilinear parabolic systems with variable coefficients

open access: yesElectronic Journal of Differential Equations, 2021
Falko Baustian, Peter Takac
doaj  

What are the carbon services from cover‐crop adoption worth from farmers' perspective?

open access: yesAmerican Journal of Agricultural Economics, EarlyView.
Abstract We derive shadow prices of carbon services provided by cover crops relative to non‐cover‐crop agricultural practices, accounting for carbon sequestration and greenhouse gas (GHG) emissions. We model the agricultural technology by integrating crop production, carbon sequestration, and GHG emissions.
Saurav Raj Kunwar   +3 more
wiley   +1 more source

Underutilised crops in Europe: An interdisciplinary approach towards sustainable practices

open access: yesArchaeometry, EarlyView.
Abstract In the context of a rapidly growing global population and significant climatic and environmental change, there is an urgent need to produce nutritious food in a sustainable manner. Some crops are underutilised in Europe, despite their suitability to local environments, viability for sustainable production and potential to improve diets.
Meriel McClatchie   +18 more
wiley   +1 more source

Edge Sharpness Does Not Vary Between Palaeolithic Flake Technologies, With the Possible Exception of Levallois Débitage

open access: yesArchaeometry, EarlyView.
ABSTRACT Investigating why hominins adopted particular flake technologies during the Mid‐to‐Late Pleistocene is essential to understanding patterns of lithic innovation. This period witnessed the emergence of Levallois technologies (~350–250 ka) and later blades, each “replacing” earlier forms.
Anna Mika, Alastair Key
wiley   +1 more source

Home - About - Disclaimer - Privacy