Lake Kirkpatrick (IMAGE) PLOS Caption Present day forest-grassland mosaic at Lake Kirkpatrick, South Island New Zealand. Paleoenvironmental records suggest that drier, mid- and low-elevation sites in South Island New Zealand such as Lake Kirkpatrick (rainfall 1000 mm/yr, elevation 527 masl) were more vulnerable to the impacts of human-set fires following Polynesian arrival c. 750 yrs ago. Credit D. McWethy Usage Restrictions CC-BY License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.