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22-464: The 193-square-kilometre (75 sq mi) municipality is the 305th largest by area out of the 357 municipalities in Norway. Dønna is the 305th most populous municipality in Norway with a population of 1,427. The municipality's population density is 7.4 inhabitants per square kilometre (19/sq mi) and its population has increased by 0.5% over the previous 10-year period. The municipality of Dønna

44-573: A fast pace. Cities with high population densities are, by some, considered to be overpopulated, though this will depend on factors like quality of housing and infrastructure and access to resources. Very densely populated cities are mostly in Asia (particularly Southeast Asia ); Africa's Lagos , Kinshasa , and Cairo ; South America's Bogotá , Lima , and São Paulo ; and Mexico City and Saint Petersburg also fall into this category. City population and especially area are, however, heavily dependent on

66-544: A high urbanization level, with an economically specialized city population drawing also on rural resources outside the area, illustrating the difference between high population density and overpopulation . Deserts have very limited potential for growing crops as there is not enough rain to support them. Thus, their population density is generally low. However, some cities in the Middle East, such as Dubai , have been increasing in population and infrastructure growth at

88-491: A little less than the land area of Puerto Rico , 8,868 square kilometres (3,424 sq mi). Although the arithmetic density is the most common way of measuring population density, several other methods have been developed to provide alternative measures of population density over a specific area. Archipelago An archipelago ( / ˌ ɑːr k ə ˈ p ɛ l ə ɡ oʊ / AR -kə- PEL -ə-goh ), sometimes called an island group or island chain ,

110-576: Is a chain, cluster, or collection of islands , or sometimes a sea containing a small number of scattered islands. Archipelagos are sometimes defined by political boundaries. For example, while they are geopolitically divided, the San Juan Islands and Gulf Islands geologically form part of a larger Gulf Archipelago. The word archipelago is derived from the Ancient Greek ἄρχι-( arkhi- , "chief") and πέλαγος ( pélagos , "sea") through

132-482: Is called the Allee effect after the scientist who identified it. Examples of the causes of reduced fertility in low population densities are: Population density is the number of people per unit of area, usually transcribed as "per square kilometer" or square mile, and which may include or exclude, for example, areas of water or glaciers. Commonly this is calculated for a county , city , country , another territory or

154-551: Is governed by a municipal council of directly elected representatives. The mayor is indirectly elected by a vote of the municipal council. The municipality is under the jurisdiction of the Helgeland District Court and the Hålogaland Court of Appeal . The municipal council ( Kommunestyre ) of Dønna is made up of 17 representatives that are elected to four year terms. The tables below show

176-544: Is made up of a large archipelago consisting of islands, islets, and reefs. The three largest islands in the municipality are Dønna , Løkta , and Vandve . The Åsværet islands (and the Åsvær Lighthouse ) lie in the western part of the municipality. The island municipality is situated at the mouth of the Ranfjorden . The highest point in the municipality is the 855.1-metre (2,805 ft) tall mountain Dønnmannen on

198-623: Is part of the Nord-Helgeland prosti ( deanery ) in the Diocese of Sør-Hålogaland . Much of the industry focuses on fishing , aquaculture , and fish processing . There is also some agriculture , tourism , and some public services. Dønna Municipality is responsible for primary education (through 10th grade), outpatient health services , senior citizen services, welfare and other social services , zoning , economic development , and municipal roads and utilities. The municipality

220-530: Is taken into account, then human population density is 53/km (140/sq mi). This includes all continental and island land area, including Antarctica . However, if Antarctica is excluded, then population density rises to over 58 per square kilometre (150/sq mi). The European Commission's Joint Research Centre (JRC) has developed a suite of (open and free) data and tools named the Global Human Settlement Layer (GHSL) to improve

242-502: The entire world . The world's population is around 8,000,000,000 and the Earth 's total area (including land and water) is 510,000,000 km (200,000,000 sq mi). Therefore, the worldwide human population density is approximately 8,000,000,000 ÷ 510,000,000 = 16/km (41/sq mi). However, if only the Earth's land area of 150,000,000 km (58,000,000 sq mi)

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264-406: The waves on the island). The coat of arms was granted on 29 May 1981. The official blazon is " Or a schnecke azure from base sinister to dexter " ( Norwegian : Delt av gull og blått ved virvelsnitt ). This means the arms have a field (background) that is divided by a line called a schnecke (a swirling clockwise spiral design that is looks like a wave ). The field located above

286-775: The Italian arcipelago . In antiquity , "Archipelago" (from Medieval Greek * ἀρχιπέλαγος and Latin archipelagus ) was the proper name for the Aegean Sea . Later, usage shifted to refer to the Aegean Islands (since the sea has a large number of islands). Archipelagos may be found isolated in large amounts of water or neighbouring a large land mass. For example, Scotland has more than 700 islands surrounding its mainland, which form an archipelago. Archipelagos are often volcanic, forming along island arcs generated by subduction zones or hotspots , but may also be

308-450: The current and historical composition of the council by political party . The mayor ( Norwegian : ordfører ) of Dønna is the political leader of the municipality and the chairperson of the municipal council. Here is a list of people who have held this position: Dønna is located in the outer, coastal part of Helgeland which also consists of Leirfjord Municipality , Alstahaug Municipality , and Herøy Municipality . The municipality

330-547: The definition of "urban area" used: densities are almost invariably higher for the center only than when suburban settlements and intervening rural areas are included, as in the agglomeration or metropolitan area (the latter sometimes including neighboring cities). In comparison, based on a world population of 8 billion, the world's inhabitants, if conceptualized as a loose crowd occupying just under 1 m (10 sq ft) per person (cf. Jacobs Method ), would occupy an area of 8,000 square kilometres (3,100 sq mi)

352-504: The island of Dønna. Population density Population density (in agriculture : standing stock or plant density ) is a measurement of population per unit land area. It is mostly applied to humans , but sometimes to other living organisms too. It is a key geographical term. Population density is population divided by total land area , sometimes including seas and oceans, as appropriate. Low densities may cause an extinction vortex and further reduce fertility. This

374-530: The line has a tincture of Or which means it is commonly colored yellow, but if it is made out of metal, then gold is used. The tincture below the line is blue. The arms are a canting symbol for the municipality since the Norwegian word dønning means "wave" or " swell ". The arms were designed by Odd Fjordholm. The Church of Norway has one parish ( sokn ) within Dønna Municipality. It

396-465: The result of erosion , deposition , and land elevation . Depending on their geological origin, islands forming archipelagos can be referred to as oceanic islands , continental fragments , or continental islands . Oceanic islands are mainly of volcanic origin, and widely separated from any adjacent continent. The Hawaiian Islands and Galapagos Islands in the Pacific , and Mascarene Islands in

418-568: The science for policy support to the European Commission Directorate Generals and Services and as support to the United Nations system. Several of the most densely populated territories in the world are city-states , microstates and urban dependencies . In fact, 95% of the world's population is concentrated on just 10% of the world's land. These territories have a relatively small area and

440-670: The shelf. The islands of the Inside Passage off the coast of British Columbia and the Canadian Arctic Archipelago are examples. Artificial archipelagos have been created in various countries for different purposes. Palm Islands and The World Islands off Dubai were or are being created for leisure and tourism purposes. Marker Wadden in the Netherlands is being built as a conservation area for birds and other wildlife. The largest archipelago in

462-432: The south Indian Ocean are examples. Continental fragments correspond to land masses that have separated from a continental mass due to tectonic displacement. The Farallon Islands off the coast of California are an example. Sets of islands formed close to the coast of a continent are considered continental archipelagos when they form part of the same continental shelf, when those islands are above-water extensions of

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484-530: Was established on 1 January 1962 due to the work of the Schei Committee . The new municipality was created by merging these areas: The borders of Dønna Municipality have not changed since that time. The municipality is named after the island of Dønna ( Old Norse : Dyn ). The name is probably derived from the Old Norse verb dynja which means to "rumble" or "roar" (referring to the swell of

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