Results 41 to 50 of about 2,160,574 (295)

Numerical ranges of weighted shifts

open access: yesJournal of Mathematical Analysis and Applications, 2011
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Wang, Kuo-Zhong, Wu, Pei Yuan
openaire   +1 more source

Two-nucleon scattering in multiple partial waves [PDF]

open access: yes, 2015
We determine scattering phase shifts for S,P,D, and F partial wave channels in two-nucleon systems using lattice QCD methods. We use a generalization of Luscher's finite volume method to determine infinite volume phase shifts from a set of finite volume ...
Berkowitz, Evan   +7 more
core   +3 more sources

Photic Barriers to Poleward Range-shifts

open access: yesTrends in Ecology & Evolution, 2020
With climate warming, organisms are shifting their ranges towards the poles, tracking their optimal thermal environments. Day-length, the driver of daily and annual timing, is, however, fixed by latitude and date. Timing and photoreception mechanisms adapted to ancestral photic environments may restrict range-shift capacity, resulting in photic ...
openaire   +2 more sources

Maximum Entropy Niche-Based Modeling for Predicting the Potential Suitable Habitats of a Traditional Medicinal Plant (Rheum nanum) in Asia under Climate Change Conditions

open access: yesAgriculture, 2022
Rheum nanum, a perennial herb, is a famous traditional Chinese medicinal plant that has great value in modern medicine. In order to determine the potential distribution of R.
Wei Xu   +4 more
doaj   +1 more source

Investigating the potential of social media and citizen science data to track changes in species' distributions

open access: yesEcology and Evolution, 2023
How to best track species as they rapidly alter their distributions in response to climate change has become a key scientific priority. Information on species distributions is derived from biological records, which tend to be primarily sourced from ...
Daisy O'Neill   +6 more
doaj   +1 more source

Transplant Experiments Point to Fire Regime as Limiting Savanna Tree Distribution

open access: yesFrontiers in Ecology and Evolution, 2018
Plant species range shifts are predicted to occur in response to climate change. The predictions are often based on the assumption that climate is the primary factor limiting the distribution of species.
Nicola Stevens   +3 more
doaj   +1 more source

Major Expansion of Marine Forests in a Warmer Arctic

open access: yesFrontiers in Marine Science, 2022
Accelerating warming and associated loss of sea ice are expected to promote the expansion of coastal marine forests (macrophytes) along the massive Arctic coastlines. Yet, this region has received much less attention compared to other global oceans.
Jorge Assis   +6 more
doaj   +1 more source

Experimental migration upward in elevation is associated with strong selection on life history traits

open access: yesEcology and Evolution, 2020
One of the strongest biological impacts of climate change has been the movement of species poleward and upward in elevation. Yet, what is not clear is the extent to which the spatial distribution of locally adapted lineages and ecologically important ...
Megan L. DeMarche   +2 more
doaj   +1 more source

Interactive range‐limit theory (iRLT): An extension for predicting range shifts [PDF]

open access: yesJournal of Animal Ecology, 2019
AbstractA central theme of range‐limit theory (RLT) posits that abiotic factors form high‐latitude/altitude limits, whereas biotic interactions create lower limits. This hypothesis, often credited to Charles Darwin, is a pattern widely assumed to occur in nature. However, abiotic factors can impose constraints on both limits and there is scant evidence
Alexej P. K. Sirén, Toni Lyn Morelli
openaire   +2 more sources

Pion-Nucleon Phase Shifts in Heavy Baryon Chiral Perturbation Theory

open access: yes, 1997
We calculate the phase shifts in the pion-nucleon scattering using the heavy baryon formalism. We consider phase shifts for the pion energy range of 140 to $200 $ MeV. We employ two different methods for calculating the phase shifts - the first using the
Alakabha Datta   +16 more
core   +1 more source

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