Glossary of Ecology - U

U

• umbrella species - species which are selected for making conservation related decisions, typically because protecting these species indirectly protects the many other species that make up the ecological community of its habitat.
• ultra Plankton - a large breed of sea plankton found in marine environments.
• upwelling - when the flow of water is in an upward direction created by atmospheric winds that blow over the ocean's surface away from the coastline and cause deeper, colder, water to rise to the top.
• Urban ecology - the study of ecosystems in urban areas