Its cloud forests and lowland rainforests are particularly rich. Ecoregions include the Fiordland temperate forests and Westland temperate rainforests. The terrain of the park varies from mosaic grasslands, dense sal forests and swampy marshes. Forest gardening is a term permaculturalists use to describe systems designed to mimic natural forests. Inland are lakes, rivers, forests, and mountains. Tasmanian devils particularly like dry sclerophyll forests and coastal woodlands. Temperate rain forests occur in the Valdivian temperate rain forests and Magellanic subpolar forests ecoregions. They include xeric scrublands in the extreme northwest and coastal mangrove forests in the northeast. Below elevation lie the Himalayan subtropical pine forests. It is absent from urban areas, forests, and wetlands. Their diversity is highest in wet, lowland forests. There have been many problems with conservation management of the forests and wetlands. Benin has fallow fields, mangroves, and remnants of large sacred forests. Marsupials evolved within the large conifer forests as scavengers. These are arboreal birds of northern forests.