Ecoregion

Antigua and Barbuda is a sovereign archipelagic country in the Caribbean composed of Antigua, Barbuda, and numerous other small islands. Antigua and Barbuda has a total area of 440 km (170 sq mi), making it one of the smallest countries in the Caribbean. The country is mostly flat, with the highest points on Antigua being in the Shekerley Mountains and on Barbuda the Highlands. The country has a tropical savanna climate, with pockets of tropical monsoon in Antigua's southwest. Its most populated city is St. John's, followed by All Saints and Bolans. Most of the country resides in the corridor between St. John's and English Harbour.

Bounded by the Atlantic Ocean on the east and the Caribbean Sea on the west, Antigua and Barbuda is located within the Leeward Islands moist forest and Leeward Islands xeric scrub ecoregions. The country shares maritime borders with Anguilla, Saint Barthélemy, and Saint Kitts and Nevis to the west, Montserrat to the southwest, and Guadeloupe to the south. Antigua and Barbuda has numerous natural parks, including Codrington Lagoon, one of the largest internal bodies of water in the Lesser Antilles. Despite its dense population, the country has large swaths of undeveloped land, however, Antigua and Barbuda has experienced many environmental issues due to climate change.

A grassland is an area (or ecosystem) where the vegetation is dominated by grasses. However, sedges and rushes can also be found along with variable proportions of legumes such as clover, and other herbs. Grasslands occur naturally on all continents except Antarctica and are found in most ecoregions of the Earth. Furthermore, grasslands are one of the largest biomes on Earth and dominate the landscape worldwide. There are different types of grasslands: natural grasslands, semi-natural grasslands, and agricultural grasslands. They cover 31–69% of the Earth's land area.

The Rhodopes (/ˈrɒdəpiːz/; Bulgarian: Родопи, Rodopi; Greek: Ροδόπη, Rodopi; Turkish: Rodoplar) are a mountain range in Southeastern Europe, and the largest by area in Bulgaria, with over 83% of its area in the southern part of the country and the remainder in Greece. Golyam Perelik is its highest peak at 2,191 meters (7,188 ft). The mountain range gives its name to the terrestrial ecoregion Rodope montane mixed forests that belongs in the temperate broadleaf and mixed forests biome and the Palearctic realm. The region is particularly notable for its karst areas with their deep river gorges, large caves and specific sculptured forms, such as the Trigrad Gorge.

A significant part of Bulgaria's hydropower resources are located in the western areas of the range. There are a number of hydro-cascades and dams used for electricity production, irrigation, and as tourist destinations.

Koritnik (Albanian definite form: Koritniku) is a wooded, limestone mountain, located in northeastern Albania and southwest Kosovo between the cities of Kukës and Prizren. The mountain is entirely surrounded by branches of the White Drin river. The highest point of Koritnik massif, Maja e Pikëllimës reaches an elevation of 2,393 metres (7,851 ft) above the Adriatic. Gryka e Vanavës (English: Vanave Gorge) separates the mountain from Gjallica. The gorge is 3.5 km (2.2 mi) long, 30 m (100 ft) wide, and about 300 m (980 ft) deep.

The massif falls within the Balkan mixed forests terrestrial ecoregion of the Palearctic temperate broadleaf and mixed forests biome. The slopes of the mountain meadows are mostly covered with coniferous forests. The high pastures of the Koritnik mountain help sustain a population of around 60 chamois.

Gjallica or Gjallica e Lumës is a limestone mountain at 2,487 m (8,159 ft) above sea level and the highest summit in the region of Kukës County, Albania. It lies 8 km (5 mi) southeast of the city of Kukës, having a cap covered by snow up to June when the winters are cold and snowy.

The mountain falls within the Balkan mixed forests and Dinaric Mountains mixed forests terrestrial ecoregions of the Palearctic Temperate broadleaf and mixed forests biome. The slopes of the mountain are entirely covered with coniferous forests. It has thick vegetation of pines and beeches on high altitude, but sparse vegetation on the foot of the mountain due to the now closed plant that emitted harmful gases for the vegetation close to it. Gjallica appears to be very tall because the Black Drin valley to its west is only 250 m (820 ft) above sea level.

Çikë, (Albanian pronunciation: [mali i tʃikəs]) at 2,044 metres (6,706 ft) above sea level, is the highest peak of the Ceraunian Mountains range in Albania which extends approximately 100 kilometres (62 mi) along the Albanian Riviera in a northwesterly direction from Sarandë to the Karaburun Peninsula. With a prominence of 1,563 metres (5,128 ft), Çikë is the 85th most prominent mountain peak in Europe.

The climate is Mediterranean, having hot summers and generally warm to cool, dry winters. The mount falls within the Illyrian deciduous forests terrestrial ecoregion of the Palearctic temperate broadleaf and mixed forests biome. The mount is also part of the Llogara National Park, which is noted for its rich biodiversity and vegetation. The western flank of the mount is vegetated by species such as the Bulgarian fir, Austrian pine, Bosnian pine and Macedonian pine.

The Eurasian Steppe, also called the Great Steppe or The Steppes, is the vast steppe ecoregion of Eurasia in the temperate grasslands, savannas and shrublands biome. It stretches through Manchuria, Mongolia, Xinjiang, Kazakhstan, Siberia, European Russia, Ukraine, Moldova, Romania, Bulgaria, Hungary and Slovakia.

Since the Paleolithic age, the Steppe Route has been the main overland route between Eastern Europe, North Asia, Central Asia and East Asia economically, politically, and culturally. The Steppe route is a predecessor not only of the Silk Road, which developed during antiquity and the Middle Ages, but also of the Eurasian Land Bridge in the modern era. It has been home to nomadic empires and many large tribal confederations and ancient states throughout history, such as the Xiongnu, Scythia, Cimmeria, Sarmatia, Hunnic Empire, Sogdia, Xianbei, Mongol Empire, Magyar tribes, and Göktürk Khaganate.

Southwest Australia is a biogeographic region in Western Australia. It includes the Mediterranean-climate area of southwestern Australia, which is home to a diverse and distinctive flora and fauna.

The region is also known as the Southwest Australia Global Diversity Hotspot.

In physical geography, a steppe (/stɛp/) is an ecoregion characterized by grassland plains without closed forests except near rivers and lakes.

Steppe biomes may include:

The Santa Cruz Islands form an archipelago in Temotu Province, Solomon Islands. They lie approximately 250 miles (220 nmi; 400 km) to the southeast of the Solomon Islands archipelago, just north of the archipelago of Vanuatu and are considered part of the Vanuatu rain forests ecoregion. The term Santa Cruz Islands is sometimes used to encompass all the islands of Temotu Province, Solomon Islands.

The Leeward Islands moist forests ecoregion (WWF ID: NT0134) covers the forested areas of the Leeward Islands on the northeastern edge of the Caribbean Sea, stretching from the Virgin Islands in the west to Guadeloupe to the southeast. The forested areas are typically in the core interior of the islands, and at the higher elevations of the volcanic islands. Non-forested lower elevations in the region receive less rainfall and are typically semi-arid. A notable feature of the ecoregion is its position in the main hurricane track. The frequent damage to trees produces in many places an uneven forest canopy, and an opening of the canopy that allows more pre-climax trees to grow.

The Leeward Islands xeric scrub ecoregion (WWF ID: NT1310) covers the dry ('xeric'), non-forested areas of the Leeward Islands on the northeastern edge of the Caribbean Sea, stretching from the Virgin Islands in the west to Guadeloupe to the southeast. The non-forested areas are generally low scrub shrub, on the low elevations around the peripheries of the islands. Non-forested lower elevations in the region receive less rainfall and are typically semi-arid. A notable feature of the ecoregion is its position in the main hurricane track. The frequent damage to trees allows more pre-climax shrubs and trees to grow. There are a number of endemic species, as in common with islands.

The Black Rock Desert is a semi-arid region (in the Great Basin shrub steppe ecoregion) of lava beds and playa, or alkali flats, situated in the Black Rock Desert–High Rock Canyon Emigrant Trails National Conservation Area, a silt playa 100 miles (160 km) north of Reno, Nevada, that encompasses more than 300,000 acres (120,000 ha) of land and contains more than 120 miles (200 km) of historic trails. It is in the northern Nevada section of the Great Basin with a lakebed that is a dry remnant of Pleistocene Lake Lahontan.

The Great Basin, named for the geography in which water is unable to flow out and remains in the basin, is a rugged land serrated by hundreds of mountain ranges, dried by wind and sun, with spectacular skies and scenic landscapes. The average annual precipitation (in the years 1971–2000) at Gerlach (in the extreme south-west of the desert) is 7.90 inches (200 mm).

Tropical forests are forested ecoregions with tropical climates – that is, land areas approximately bounded by the tropics of Cancer and Capricorn, but possibly affected by other factors such as prevailing winds.

Some tropical forest types are difficult to categorize. While forests in temperate areas are readily categorized on the basis of tree canopy density, such schemes do not work well in tropical forests. There is no single scheme that defines what a forest is, in tropical regions or elsewhere. Because of these difficulties, information on the extent of tropical forests varies between sources. However, tropical forests are extensive, making up just under half the world's forests. The tropical domain has the largest proportion of the world's forests (45 percent), followed by the boreal, temperate and subtropical domains.

Terrestrial locomotion is the method of movement of an organism on land. Organisms employ many different methods of movement for a variety of reasons.

Terrestrial locomotion is of great interest to the study of evolution, which determines that aquatic organisms adapted to terrestrial environments. Animal locomotion on land experiences buoyancy and friction to a lesser extent, and gravity to a greater extent.

The Great Basin is the largest area of contiguous endorheic watersheds, those with no outlets to the ocean, in North America. It spans nearly all of Nevada, much of Utah, and portions of California, Idaho, Oregon, Wyoming, and Baja California. It is noted for both its arid climate and the basin and range topography that varies from the North American low point at Badwater Basin in Death Valley to the highest point of the contiguous United States, less than 100 miles (160 km) away at the summit of Mount Whitney. The region spans several physiographic divisions, biomes, ecoregions, and deserts.

The Kazakh Steppe (Kazakh: Қазақ даласы, romanized: Qazaq dalasy [qɑˈzɑq dɑɫɑˈsə]), also known as the Great Steppe or Great Dala (Kazakh: Ұлы дала, romanized: Ūly dala [ʊˈɫɤ dɑˈɫɑ]), is a vast region of open grassland in Central Asia, covering areas in northern Kazakhstan and adjacent areas of Russia. It lies east of the Pontic–Caspian steppe and west of the Emin Valley steppe, with which it forms the central and western part of the Eurasian steppe. The Kazakh Steppe is an ecoregion of the temperate grasslands, savannas, and shrublands biome in the Palearctic realm. Before the mid-19th century, it was called the Kirghiz steppe, 'Kirghiz' being an old Russian word for the Kazakhs.

The Cerrado (Portuguese pronunciation: [seˈʁadu]) is a vast ecoregion of tropical savanna in central Brazil, being present in the states of Goiás, Mato Grosso do Sul, Mato Grosso, Tocantins, Maranhão, Piauí, Bahia, Minas Gerais, São Paulo, Paraná and the Federal District. The core areas of the Cerrado biome are the Brazilian highlands – the Planalto. The main habitat types of the Cerrado consist of forest savanna, wooded savanna, park savanna and gramineous-woody savanna. The Cerrado also includes savanna wetlands and gallery forests.

The second largest of Brazil's major habitat types, after the Amazonian rainforest, the Cerrado accounts for a full 21 percent of the country's land area (extending marginally into Paraguay and Bolivia). About 75% of the Cerrado’s 2 million km is privately owned.

The Kuroshio Current (黒潮; "Black Tide"), also known as the Black Current or Japan Current (日本海流, Nihon Kairyū), is a north-flowing, warm ocean current on the west side of the North Pacific Ocean basin. It was named for the deep blue appearance of its waters. Similar to the Gulf Stream in the North Atlantic, the Kuroshio is a powerful western boundary current that transports warm equatorial water poleward and forms the western limb of the North Pacific Subtropical Gyre. Off the East Coast of Japan, it merges with the Oyashio Current to form the North Pacific Current.

The Kuroshio Current has significant effects on both physical and biological processes of the North Pacific Ocean, including nutrient and sediment transport, major pacific storm tracks and regional climate, and Pacific mode water formation. Additionally, the current's significant nutrient transport results in a biologically rich ecoregion supporting an important fishing industry as well as diverse marine food webs. The South China Sea for example has relatively low nutrient concentrations in its upper waters, but experiences enhanced biological productivity due to the input from the Kuroshio Current Intrusion. Ongoing research centered around the Kuroshio Current's response to climate change predicts a strengthening in surface flows of this western boundary current which contrasts the predicted changes in the Atlantic Ocean's Gulf Stream.