Introducing
Your new presentation assistant.
Refine, enhance, and tailor your content, source relevant images, and edit visuals quicker than ever before.
Trending searches
Melanie A. Smith, Nathan J. Walker, Matthew J. Kirchhoff, and Christopher M. Free
Approach 3:
Quantiles
Melanie Smith
Boundary sensitive, will always produce hotspots
Very sensitive to data gaps
Quantile area is variable based on underlying data distribution
Approach 2:
Buffered Colonies
Approach 4:
Density Dependent
Easy to use and understand
Boundary sensitive, ability to find hotspots for any region
Good for identifying the best places for rare species
Melanie Smith
Easy to use and understand
Finds areas where birds are clustered
Will not produce boundaries if criteria is not met
Milo Burcham
For distributed/dispersed species, identifies expansive areas
Would work best by varying threshold by species, which becomes complicated to compute and communicate
For restricted/clustered species, leaves out important areas
Milo Burcham
Foraging distances hard to interpret, often based on other locales
Buffer shape may not reflect local foraging conditions
Does not work well for long-distance foragers
Milo Burcham
Draw boundaries in places with little or no survey data
Requires only basic spatial analytical skills
Large foraging distance database available
Can be improved with additional habitat information
Milo Burcham
Biologists synthesize field data
Planners work on protection measures
Alaska's marine IBAs
Globally significant sites
Few focus on delineating important areas
B2B Project
Boundaries expand at low thresholds
Will not produce boundaries if thresholds are not met, less good for regional assessment
Milo Burcham
Mathematically simple, easy to explain
Not boundary sensitive, works well for assessment of global significance
Results are easily tested for meeting abundance thresholds
Produces boundaries with both adequate abundance and concentration within a local area
Milo Burcham
We tested these methods across a large area in Alaska:
Expert Drawing
Spanning 20 degrees of latitude and 56 degrees of longitude
Approach 5:
Moving Window
In climates ranging from temperate to polar
Across species guilds
Both long and short-distance foragers
Milo Burcham
For clustered and dispersed distributions
Gaps in knowledge translate into data deficiencies
Moving window was broadly applicable for delineating globally significant areas for seabird conservation
Results may be biased or wrong
Results of the IBA project are presented in the poster session
Can be completed quickly and inexpensively
Ability to utilize local ecological knowledge