Essential Biodiversity Variables (EBVs)
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Gary GELLERNASA Ecological Forecasting Program
Jet Propulsion LaboratoryCalifornia Institute of Technology
NASA Biodiversity and Ecological Forecasting
Team Meeting
Seattle
25-27 April 2012
National Aeronautics and Space Administration
(c) 2012 California Institute of Technology. Government sponsorship acknowledged.
Essential Biodiversity Variables (EBVs)
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Overview
Background: Essential Climate Variables EBV characteristics Current EBV status Breakouts
Wikimedia commons
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Essential Climate Variables
Purpose: Characterize climate and how it is changing
Examples• Temperature(s)• Precipitation• Water vapor, CO2
• Sea ice• Land cover…
Have high utility for the UNFCCC and IPCC analyses
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Essential Climate Variables
Developed by GCOS as part of their implementation plan
Updated on 5 year cycle Highly successful, widely used
• Guide observing system• Feed climate models• Enables IPCC assessments• Helps guide UNFCCC Martin Wegmann via
Wikimedia commons
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Would Essential Biodiversity Variablesbe equally useful and successful?
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Who would they be for?
CBD signatory countries IPBES Policy makers, managers, researchers… NGOs Earth Observation community
Martin Wegmann via Wikimedia
commons
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Activity
March 2011: Preliminary discussions• Concept Note
February 2012: EBV meeting• Concept paper• Initial EBV list
Ongoing: Discussions on additional development
Martin Wegmann via Wikimedia commons
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EBV Examples
Ecosystem connectivity & fragmentation Disturbance regime Primary production Phenology Species occurrence Population abundance Allelic richness …
Martin Wegmann via Wikimedia
commons
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Scope: What, exactly, is “essential”?
Challenging: many opinions… Opted for “sufficient consensus” Agreed that ~30 EBVs was good
Note 1: an EBV may have multiple parameters Note 2: EBVs are more challenging than ECVs
Martin Wegmann via Wikimedia commons
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Ideal EBV Characteristics
Biological Important for understanding change Technically and affordably feasible, now or
soon Generalisable—applicable to many forms of
biodiversity Focus on “state” variables (DPSR)
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Primary vs Derived
Primary—measured “directly” Derived—calculated or modeled using a
variety of inputs EBVs tend towards the Primary side
HighlyPrimary
HighlyDerived
(DBH) (EcosystemServices)
Controversy!
Controversy!
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Organizational Framework
Realm• Marine• Freshwater• Terrestrial
Levels of biodiversity• Ecosystem• Species• Genes• Ecosystem services
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EBV Annotated List
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Species Abundance & Occurrence
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Species Traits (1)
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Species Traits (2)
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Species Pressures + Species Ancillary
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Ecosystem Process / Function (1)
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Ecosystem Process / Function (2)
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Ecosystem Structure
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Ecosystem Composition
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Ecosystem Response + Pressure + Ancillary
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Ecosystem Services
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Charge to Breakouts
Purpose• Identify the EBVs for which remote sensing
could play a significant role Why?
• Clarify the role of RS in EBVs• Guide future NASA work• Used by NASA and the EBV developers
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Breakout Guidance