NSW koala baseline survey 2025 - occupancy and abundance models

The statewide koala baseline survey is a standalone snapshot of the occurrence, distribution and relative abundance of koalas in NSW in 2025. The baseline survey covers the plausible range of koalas in NSW and over 1,000 sites were sampled across land tenures using heat-sensing drones and passive acoustic recorders. The survey also provides a baseline population estimate from which to evaluate koala population trends over time. \r\n\r\nThis dataset comprises state-wide occupancy and abundance models derived from acoustic and drone data and environmental covariates as described in the NSW koala baseline technical report, 2025

全州考拉基线调查是2025年新南威尔士州（New South Wales, NSW）考拉出现记录、空间分布及相对丰度的独立快照式调研。本次调查覆盖该州考拉的潜在分布范围，在涵盖各类土地权属的区域内布设超1000个采样点，采用热感应无人机（heat-sensing drones）与被动声学记录仪（passive acoustic recorders）完成采样工作。本调查同时提供基线种群估算数据，可用于后续评估考拉种群随时间的变化趋势。

本数据集包含基于声学采集数据、无人机观测数据及环境协变量（environmental covariates）构建的全州范围占用模型（occupancy models）与丰度模型（abundance models），相关构建方法详见《2025年新南威尔士州考拉基线技术报告》。