Biodiversity Net Gain Calculator
A structured planning-stage biodiversity net gain tool with area habitat units, onsite and offsite compensation tracking, simplified linear units for hedgerows and rivers, and separate summary tabs for each habitat type.
Project details
How this version works
This version separates habitat accounting into area-based habitat units, hedgerow linear units, and river linear units. Post-development habitat is also split by delivery type, so you can distinguish onsite retention or compensation from offsite compensation.
Area parcels use area, distinctiveness, condition, strategic significance, and risk multipliers. Linear habitats use a simplified length-based method with quality and risk multipliers. The report output summarizes baseline values, onsite gains, offsite gains, and total post-development outcome in a cleaner consultant-style format.
1. Baseline area habitat parcels
2. Post-development area habitat parcels
Classify each post-development area parcel by habitat action and compensation location.
3. Baseline linear habitats (hedgerows and rivers)
4. Post-development linear habitats
Use this for retained, enhanced, or created hedgerows and rivers, and classify whether compensation is onsite or offsite.
Consultant report output
Erzsebet Frey (Eli Frey) is an ecologist and online entrepreneur with a Master of Science in Ecology from the University of Belgrade. Originally from Serbia, she has lived in Sri Lanka since 2017. Eli has worked internationally in countries like Oman, Brazil, Germany, and Sri Lanka. In 2018, she expanded into SEO and blogging, completing courses from UC Davis and Edinburgh. Eli has founded multiple websites focused on biology, ecology, environmental science, sustainable and simple living, and outdoor activities. She enjoys creating nature and simple living videos on YouTube and participates in speleology, diving, and hiking.
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