Eastbourne (/ˈiːstbɔːrn/ (listen)) is a town and seaside resort in East Sussex, on the south coast of England, 19 miles (31 km) east of Brighton and 54 miles (87 km) south of London. Eastbourne is immediately east of Beachy Head, the highest chalk sea cliff in Great Britain and part of the larger Eastbourne Downland Estate. The seafront consists largely of Victorian hotels, a pier, theatre, contemporary art gallery and a Napoleonic era fort and military
Ecological succession is the process of change in the species structure of an ecological community over time. The time scale can be decades (for example, after a wildfire) or more or less. The community begins with relatively few pioneering plants and animals and develops through increasing complexity until it becomes stable or self-perpetuating as a climax community. The “engine” of succession, the cause of ecosystem
Ephemerality (from the Greek word ἐφήμερος, meaning ‘lasting only one day’) is the concept of things being transitory, existing only briefly. Academically, the term ephemeral constitutionally describes a diverse assortment of things and experiences, from digital media to types of streams. “There is no single definition of ephemerality”. With respect to unique performances, for example, it has been noted that “phemerality is a
An ecosystem (or ecological system) consists of all the organisms and the physical environment with which they interact.These biotic and abiotic components are linked together through nutrient cycles and energy flows. Energy enters the system through photosynthesis and is incorporated into plant tissue. By feeding on plants and on one another, animals play an important role in the movement of matter and energy through the system.
Drinking water is water that is used in drink or food preparation; potable water is water that is safe to be used as drinking water. The amount of drinking water required to maintain good health varies, and depends on physical activity level, age, health-related issues, and environmental conditions. For those who work in a hot climate, up to 16 litres (4.2 US gal) a day may
Dredging is the excavation of material from a water environment. Possible reasons for dredging include improving existing water features; reshaping land and water features to alter drainage, navigability, and commercial use; constructing dams, dikes, and other controls for streams and shorelines; and recovering valuable mineral deposits or marine life having commercial value. In all but a few situations the excavation is
A drainage divide, water divide, ridgeline, watershed, water parting or height of land is elevated terrain that separates neighboring drainage basins. On rugged land, the divide lies along topographical ridges, and may be in the form of a single range of hills or mountains, known as a dividing range. On flat terrain, especially where the ground is marshy, the divide may be difficult to discern. A triple divide is a point, often a summit, where
Dounby Click Mill is a mill located on the Mainland of Orkney, in Scotland. It is the last of the horizontal or “Norse” watermills of Orkney still in working order. Dounby Click Mill Type Watermill Location Dounby Coordinates 59°05′15″N 3°10′52″WCoordinates: 59°05′15″N 3°10′52″W OS grid reference HY 32541 22853 Area Mainland, Orkney Built 19th Century Owner Historic Environment Scotland Scheduled monument Official name
A detention basin or retarding basin is an excavated area installed on, or adjacent to, tributaries of rivers, streams, lakes or bays to protect against flooding and, in some cases, downstream erosion by storing water for a limited period of time. These basins are also called dry ponds, holding ponds or dry detention basins if no permanent pool of water exists. Detention ponds that are designed to permanently retain some volume of water at
Dead zones are hypoxic (low-oxygen) areas in the world’s oceans and large lakes. Hypoxia occurs when dissolved oxygen (DO) concentration falls to or below 2 mg of O2/liter. When a body of water experiences hypoxic conditions, aquatic flora and fauna begin to change behavior in order to reach sections of water with higher oxygen levels. Once DO declines below 0.5 ml O2/liter