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Peter Verweij, Erik H. Meesters, Dolfi Debrot

Identifying indicators to report on the status and trends of biodiversity for the Dutch Caribbean . Peter Verweij, Erik H. Meesters, Dolfi Debrot . Considerations. Existing monitoring programmes on the islands do not cover all required biodiversity and nature topics;

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Peter Verweij, Erik H. Meesters, Dolfi Debrot

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  1. Identifying indicators to report on the status and trends of biodiversity for the Dutch Caribbean Peter Verweij, Erik H. Meesters, Dolfi Debrot

  2. Considerations • Existing monitoring programmes on the islands do not cover all required biodiversity and nature topics; • Some existing monitoring programs use methods that cannot be used to generate the indicators required.

  3. Purpose of nature monitoring • assess the status and the development trend of a species or habitat. • understand the effect of human policy- and management measures on that status and trend. • To clarify causes of change, monitoring must also cover measurements of environmental, social and economic pressures

  4. Monitoring vs Research • Research typically about ecological questions and actual population parameters, e.g. actual population size or actual density • Monitoring serves as warning system for change • Cost-effective approach: identify and use a simpler proxy-measure to indicate changes in important parameters

  5. Monitoring Indicators • Indicator is a standardized unit of measure that summarizes information relevant to a particular phenomenon • Minimum set of indicators with accompanying methods proposed to: • facilitate management, • enable early detection of change in important ecosystems and species, and • more adequately address future reporting to treaties and conventions.

  6. Selection of Indicators • Internationally required/recommended indicators • Analysis per agreement (CBD, SPAW, Ramsar, CMS, IAC, CITES, etc.) • Analysis of ongoing efforts • List of ecosystem, species and threat indicators w. ongoingeffortsand proposedefforts

  7. Recommendations Keep supportingcurrentactivities • Maintain existing monitoring on • turtle nests • coral cover Bonaire & Curaçao • shark and ray densities • flamingo counts • yellow shouldered amazon roost counts and terns.

  8. Recommendations [2] • Adjustexisting monitoring for: • fishdensities and populationstructure (lesscapacity-intensive) • coral reef monitoring Statia + Saba Bank (harmonize w Bonaire + Curaçao) • bird species richness (link withvegetation monitoring) • red billedtropicbird (fortreatyreporting, methodcanbesimplified) • LesserAntillean Iguana (dependent on conservation and awareness action) • In-waterturtlesurveys (methodological analysis todeterminewhether data canbeusedtoderive status and trend indicators)

  9. Recommendations [3] • Setup: • ecosystem/habitat monitoring (remote sensing); • vegetation monitoring (Permanent Quadrats); • monitoring for the socio-ecological domain (ecosystem services) • Link • forest- and migratory bird monitoring to vegetation monitoring; • birds of prey monitoring to flamingo monitoring on Bonaire; • Collect data on pressures and abiotic conditions from other sources (e.g. from Statistics Netherlands); • Stimulate use of volunteers for monitoring.

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