Gaia hypothesis — The study of planetary habitability is partly based upon extrapolation from knowledge of the Earth s conditions, as the Earth is the only planet currently known to harbour life. The Gaia hypothesis, also known as Gaia theory or Gaia principle,… … Wikipedia
Mesopredator release hypothesis — Raccoons (Procyon lotor) and skunks (Mephitis mephitis) are mesopredators, here they share cat food in a suburban backyard. The mesopredator release hypothesis is a relatively new hypothesis from 1988[1] which describes the … Wikipedia
Mesotrophic soil — Mesotrophic soils are soils with a moderate inherent fertility. An indicator of soil fertility is its base status, which is expressed as a ratio relating the major nutrient cations (calcium, magnesium, potassium and sodium) found there to the… … Wikipedia
Freshwater environmental quality parameters — are the natural and man made chemical, biological and microbiological characteristics of rivers, lakes and ground waters, the ways they are measured and the ways that they change. The values or concentrations attributed to such parameters can be… … Wikipedia
Nutrient cycle — … Wikipedia
Arbuscular mycorrhiza — An arbuscular mycorrhiza (plural mycorrhizae or mycorrhizas) is a type of mycorrhiza in which the fungus penetrates the cortical cells of the roots of a vascular plant.Arbuscular mycorrhizae (AMs) are characterized by the formation of unique… … Wikipedia
Carbon sequestration — is the capture of carbon dioxide (CO2) and may refer specifically to: The process of removing carbon from the atmosphere and depositing it in a reservoir. [1] When carried out deliberately, this may also be referred to as carbon dioxide removal,… … Wikipedia
Life Sciences — ▪ 2009 Introduction Zoology In 2008 several zoological studies provided new insights into how species life history traits (such as the timing of reproduction or the length of life of adult individuals) are derived in part as responses to… … Universalium
Ecology — For other uses, see Ecology (disambiguation). Ecology … Wikipedia
Anthropology and Archaeology — ▪ 2009 Introduction Anthropology Among the key developments in 2008 in the field of physical anthropology was the discovery by a large interdisciplinary team of Spanish and American scientists in northern Spain of a partial mandible (lower… … Universalium
