---
- contact_email: ~
  contact_note: ~
  description: Thresholds of Climate Change in Ecosystems. A report by the U.S. Climate Change Science Program and the Subcommittee on Global Change Research.
  display_name: SAP 4.2. Thresholds of Climate Change in Ecosystems
  doi: ~
  frequency: ~
  identifier: ccsp-sap-4_2-2009
  in_library: 1
  publication_year: 2009
  report_type_identifier: report
  summary: Thresholds of Climate Change in Ecosystems. A report by the U.S. Climate Change Science Program and the Subcommittee on Global Change Research.
  title: SAP 4.2. Thresholds of Climate Change in Ecosystems
  topic: Ecosystems
  type: report
  uri: /report/ccsp-sap-4_2-2009
  url: https://downloads.globalchange.gov/sap/sap4-2/sap4-2-final-report-all.pdf