Introduction to Study

  • Afforestation considered for climate change solutions.
  • Co-benefits for biodiversity should be prioritized.
  • Simple ecological guidelines to select areas boosting forest biodiversity.
  • Large, connected, high-quality areas for best biodiversity potential.
  • Designed for scenarios lacking specific biodiversity data.

Overview of Methods

  • We calculate scores for individual cells, representing local habitat connectivity priority.
  • Three primary radii analyzed: 250m, 500m and 1000m, representing different scales of surrounding habitat influence.
  • Aggregation: Cell scores are summed to generate overall project scores.
  • Prioritization principles include:

Principles

  1. connected to existing nature areas (Areas with protetion schemes).
  2. connected to high-quality forest (Descidius forest).
  3. connected to the largest contiguous nature areas.

Cell Score Equations

Parameters for Each Cell

  1. Proportion of Existing Nature around cell \(i\) on a given radius \(\text{pEN}_i\).
  2. Proportion of Existing Nature that is forested around cell \(i\) on a given radius \(\text{pEN}^f_i\).
  3. Proportion of Forest not considered existing nature around cell \(i\) on a given radius \(\text{pEN}^f_i\).
  4. Logarithm of the Sum of areas of existing nature polygons around cell \(i\) on a given radius \(\log(A_{\text{sum}})\).

Log Vs not Log

Parameters plotted

Cell Score Equations

  • Equation 1:

    \[ CS_1 = \frac{\text{pEN} + \text{pF} + \log(A_{\text{sum}})}{3} \]

  • Equation 2:

    \[ CS_2 = \frac{\text{pEN}^f + \text{pF} + \log(A_{\text{sum}})}{3} \]

  • These equations ensure that each cell’s score ranges from 0 to 1, encapsulating both the proposed area and its quality.

Cell score 1

Cell score 2

Closeup 1

Closeup 2

Effect of radius in Variables (Proportions)

  • Max value of 250 radius is 0.763
  • Max value of 1000 radius is 0.288
  • Number of cells over 0 in 250 radius is 5,125,067
  • Number of cells over 0 in 1000 radius is 8,937,661

Effect of radius in Variables (Area)

  • Same scale but more cells
  • At higher radius area has increased influence

Effect of radius in Cell Scores

Final Area Score Equation

  • Final Area score is calculated by summing individual cell scores:

\[ \text{AreaScore}= \sum_{i=1}^{n} CS_i \]

  • Where \(n\) represents the total number of cells within the selected area.
  • This provides a comprehensive measure of biodiversity potential for entire areas or landscapes.

Next Steps and Results Overview

  • Check for Aarhus
  • 12,000 new Nautre areas
  • 8,000 Forest
  • Discuss how radius size impacts area scores and implications for conservation planning. -Test for another country (my own goal)

Thanks

Areas

“O:_Sustain-proj_projproject_skovrejsning_oensket_uoensket”