Articles written by Ian Parnell
Showing 12 Articles
|
Adaptive Management of Sea Lamprey
Using adaptive management, two scientists evaluated alternative larval lamprey assessment methods and improved the Great Lakes Sea Lamprey management program.
|
|
Adaptive Management
Adaptive management structures choices as experiments so resource managers can learn about ecological and socio-economic systems and improve future choices.
|
|
Statistical Power Analysis
Statistical power analysis helps design experiments and monitoring programs that protect against Type I and II errors and have high probability of detecting true effects.
|
|
Components of Statistical Power
Statistical power is a function of sample variance, sample size, the level of statistical significance, and the effect size of interest.
|
|
Think About Statistical Power
Before drawing conclusions based on a non-significant hypothesis, test check its statistical power to detect important effects.
|
|
Bushmeat Links Land and Sea
In Ghana, when the catch from ocean fisheries declines, people eat more 'bushmeat', increasing the hunting pressure on inland wildlife populations.
|
|
Digital Corn
By growing virtual crops with computers, scientists learn how agriculture interacts with the environment at very large scales.
|
|
Assessing Corn-Ethanol's Impacts
Ecosystem modeling is a valuable tool for assessing conflicts between environmental policies, quantifying consequences, and making trade-offs clear.
|
|
Biofuels and Dead Zones
The unexpected impact of increased corn-ethanol production on a coastal ecosystem illustrates the challenge of creating sustainable solutions to environmental problems.
|
|
The Value of Information
Is better science always worth it? Environmental managers can assess if better science helps achieve broader management goals by considering its 'Value of Information'.
|
|
'Dead Zones' and Climate Change
Low-oxygen 'dead zones' caused by nutrient pollution are spreading through coastal ecosystems worldwide. Climate change may make this serious environmental problem worse.
|
|
Agriculture Impacts Oceans
Agricultural fertilizers pollute coastal ecosystems with excess nutrients, creating hypoxic 'dead zones' that reduce habitat, lower biodiversity and impact fisheries.
|
