Published on: 2025-04-27 06:28:05
Equations modelling predator–prey cycles This article is about the predator-prey equations. For the competition equations, see Competitive Lotka–Volterra equations The Lotka–Volterra equations, also known as the Lotka–Volterra predator–prey model, are a pair of first-order nonlinear differential equations, frequently used to describe the dynamics of biological systems in which two species interact, one as a predator and the other as prey. The populations change through time according to the pa
Keywords: displaystyle model population predator prey
Find related items on AmazonPublished on: 2025-05-15 11:39:35
A study released on Wednesday finds that a live-virus vaccine that limits shingles symptoms was associated with a drop in the risk for dementia when it was introduced. The work took advantage of the fact that the National Health Service Wales made the vaccine available with a very specific age limit, essentially creating two populations, vaccinated and unvaccinated, separated by a single date. And these populations showed a sharp divide in how often they were diagnosed with dementia, despite hav
Keywords: dementia health populations shingles vaccine
Find related items on AmazonPublished on: 2025-05-31 09:27:32
A new way of estimating rural populations has found that we may be undercounting people who live in these areas, potentially inflating the global population beyond the official count of 8.2 billion – but not everyone agrees Population estimates in rural areas of China may be incorrect Shutterstock/aphotostory Our estimates of rural populations have systematically underestimated the actual number of people living in these regions by at least half, researchers have claimed – with potentially hug
Keywords: data estimates people population says
Find related items on AmazonPublished on: 2025-06-03 08:19:54
Gear-obsessed editors choose every product we review. We may earn commission if you buy from a link. Why Trust Us? While most estimates place the current human population at around 8.2 billion, a new study suggests we might be vastly underrepresenting rural areas. By analyzing 300 rural dam projects across 35 countries, researchers from Aalto University in Finland found discrepancies among these independent population counts and other population data gathered between 1975 and 2010. Such under
Keywords: areas billion data population rural
Find related items on AmazonPublished on: 2025-06-01 01:50:38
Main implications of the results. The findings from this study hold significant implications for a wide array of research and policy fields that consider rural areas and their populations, including disaster preparedness, public health planning, environmental conservation, and, ultimately, sustainable development. We assessed the accuracy of global gridded population datasets specifically in rural areas around the globe using reported human resettlement numbers from over 300 dam projects, which
Keywords: areas data datasets population rural
Find related items on AmazonPublished on: 2025-07-02 04:04:49
This article has been reviewed according to Science X's editorial process and policies . Editors have highlighted the following attributes while ensuring the content's credibility: Credit: Pixabay/CC0 Public Domain Researchers from the Texas A&M College of Veterinary Medicine and Biomedical Sciences (VMBS) have discovered that bison in Yellowstone National Park—the only group of American bison that has continually existed as wildlife in the United States—now consist of a single large, interbre
Keywords: bison national park population yellowstone
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