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Researcher says field verification trims GDE mapping in Tehama subbasins
Summary
A consultant presented field verification and GIS refinement of Nature Conservancy GDE maps across Corning, Antelope and Red Bluff subbasins, recommending targeted monitoring based on NDVI, repeat photography and Arundo removal in some areas to reduce groundwater stress and fire risk.
Kristen Kosinski, a botanist and applied ecology professor working with Subterra/Heritage Resource Investigations, presented a two‑tiered method of field verification and GIS analysis to refine groundwater‑dependent ecosystem (GDE) mapping in the Corning, Antelope and Red Bluff subbasins.
Kosinski said her team sampled 30 sites in 2024–2025 (10 in Antelope, 20 in Corning), conducting vegetation transects and verifying mapped…
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