Forest fire in the context of Fire ecology

Secondary succession is the secondary ecological succession of a plant's life. As opposed to the first, primary succession, secondary succession is a process started by an event (e.g. forest fire, harvesting, hurricane, etc.) that reduces an already established ecosystem (e.g. a forest or a wheat field) to a smaller population of species, and as such secondary succession occurs on preexisting soil whereas primary succession usually occurs in a place lacking soil. Many factors can affect secondary succession, such as trophic interaction, initial composition, and competition-colonization trade-offs. The factors that control the increase in abundance of a species during succession may be determined mainly by seed production and dispersal, micro climate; landscape structure (habitat patch size and distance to outside seed sources); bulk density, pH, and soil texture (sand and clay).

Secondary succession is the ecological succession that occurs after the initial succession has been disrupted and some plants and animals still exist. It is usually faster than primary succession as soil is already present, and seeds, roots, and the underground vegetative organs of plants may still survive in the soil.

The Tillamook Burn was a series of forest fires in the Northern Oregon Coast Range of Oregon in the United States that destroyed a total area of 350,000 acres (140,000 hectares) of old growth timber in what is now known as the Tillamook State Forest. There were four wildfires in this series, which spanned the years of 1933–1958. By association, the name Tillamook Burn also refers to the location of these fires. This event is an important part of Oregon's history.

45°32′N 123°17′W / 45.54°N 123.29°W / 45.54; -123.29

The Peshtigo fire was a large forest fire on October 8, 1871, in northeastern Wisconsin, United States, including much of the southern half of the Door Peninsula and adjacent parts of the Upper Peninsula of Michigan. The largest community in the affected area was Peshtigo, Wisconsin, which had a population of approximately 1,700 residents. The fire burned about 1.2 million acres (490,000 ha) and is the deadliest wildfire in recorded history, with the number of deaths estimated between 1,500 and 2,500. The exact number of deaths is debated. Data from mass graves, both those already exhumed and those still being discovered, show that the death toll of the blaze was most likely greater than the 1889 Johnstown flood death toll of 2,200 people or more.

Occurring on the same day as the more famous Great Chicago Fire, the Peshtigo fire has been largely forgotten, even though it killed at least five times as many people.

The Antonov An-2 (USAF/DoD reporting name Type 22, NATO reporting name Colt) is a Soviet mass-produced single-engine biplane utility/agricultural aircraft designed and manufactured by the Antonov Design Bureau beginning in 1947. Its durability, lifting power, and ability to take off and land from poor runways have given it a long service life. The An-2 was produced up to 2001 and remains in service with military and civilian operators around the world.

The An-2 was designed as a utility aircraft for forestry and agriculture, but the basic airframe is adaptable and numerous variants have been developed. These include hopper-equipped crop-dusters, scientific versions for atmospheric sampling, water-bombers for fighting forest fires, air ambulances, seaplanes, and versions for dropping paratroopers.