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38-534: Kaspiysk has a cold semi-arid climate ( Köppen climate classification : BSk ). The city is one of the newer urban centers in Dagestan. It began in 1932 as a worker's encampment, servicing the needs of the nearby naval diesel engine manufacturer, Dagdizel . At the time, it was called Dvigatelstroy ( Дви́гательстро́й ), based upon the Russian word for "engine". During World War II, the site saw much growth due to

76-462: A tropical savanna climate or a humid subtropical climate . These climates tend to have hot, or sometimes extremely hot, summers and warm to cool winters, with some to minimal precipitation. Hot semi-arid climates are most commonly found around the fringes of subtropical deserts. Hot semi-arid climates are most commonly found in Africa , Australia , and South Asia . In Australia, a large portion of

114-405: A biological community that has formed in response to its physical environment and regional climate . Biomes may span more than one continent. A biome encompasses multiple ecosystems within its boundaries. It can also comprise a variety of habitats . While a biome can cover small areas, a microbiome is a mix of organisms that coexist in a defined space on a much smaller scale. For example,

152-606: A gradient (2), the moisture gradient, to express the above conclusions in what is known as the Whittaker classification scheme. The scheme graphs average annual precipitation (x-axis) versus average annual temperature (y-axis) to classify biome-types. The multi-authored series Ecosystems of the World , edited by David W. Goodall , provides a comprehensive coverage of the major "ecosystem types or biomes" on Earth: The eponymously named Heinrich Walter classification scheme considers

190-434: A location has a semi-arid climate, the precipitation threshold must first be determined. The method used to find the precipitation threshold (in millimeters): If the area's annual precipitation in millimeters is less than the threshold but more than half or 50% the threshold, it is classified as a BS (steppe, semi-desert, or semi-arid climate). Furthermore, to delineate hot semi-arid climates from cold semi-arid climates,

228-409: A mean annual temperature of 18 °C (64.4 °F) is used as an isotherm. A location with a BS -type climate is classified as hot semi-arid ( BSh ) if its mean temperature is above this isotherm, and cold semi-arid ( BSk ) if not. Hot semi-arid climates (type "BSh") tend to be located from the high teens to mid-30s latitudes of the tropics and subtropics , typically in proximity to regions with

266-499: A simplification of Holdridge's; more readily accessible, but missing Holdridge's greater specificity. Whittaker based his approach on theoretical assertions and empirical sampling. He had previously compiled a review of biome classifications. Whittaker's distinction between biome and formation can be simplified: formation is used when applied to plant communities only, while biome is used when concerned with both plants and animals. Whittaker's convention of biome-type or formation-type

304-464: A swamp, can create different kinds of communities within the same biome. Schultz (1988, 2005) defined nine ecozones (his concept of ecozone is more similar to the concept of biome than to the concept of ecozone of BBC): Robert G. Bailey nearly developed a biogeographical classification system of ecoregions for the United States in a map published in 1976. He subsequently expanded

342-433: A way to recognize the irreversible coupling of human and ecological systems at global scales and manage Earth's biosphere and anthropogenic biomes. Major anthropogenic biomes: The endolithic biome, consisting entirely of microscopic life in rock pores and cracks, kilometers beneath the surface, has only recently been discovered, and does not fit well into most classification schemes. Anthropogenic climate change has

380-503: Is woody plant encroachment , which can change grass savanna into shrub savanna. Average temperatures have risen more than twice the usual amount in both arctic and mountainous biomes, which leads to the conclusion that arctic and mountainous biomes are currently the most vulnerable to climate change. South American terrestrial biomes have been predicted to go through the same temperature trends as arctic and mountainous biomes. With its annual average temperature continuing to increase,

418-795: Is a dry climate sub-type. It is located on regions that receive precipitation below potential evapotranspiration , but not as low as a desert climate . There are different kinds of semi-arid climates, depending on variables such as temperature, and they give rise to different biomes . A more precise definition is given by the Köppen climate classification , which treats steppe climates ( BSh and BSk ) as intermediates between desert climates (BW) and humid climates (A, C, D) in ecological characteristics and agricultural potential. Semi-arid climates tend to support short, thorny or scrubby vegetation and are usually dominated by either grasses or shrubs as they usually cannot support forests. To determine if

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456-485: Is a broader method to categorize similar communities. Whittaker used what he called "gradient analysis" of ecocline patterns to relate communities to climate on a worldwide scale. Whittaker considered four main ecoclines in the terrestrial realm. Along these gradients, Whittaker noted several trends that allowed him to qualitatively establish biome-types: Whittaker summed the effects of gradients (3) and (4) to get an overall temperature gradient and combined this with

494-597: Is incorporated as the City of Kaspiysk —an administrative unit with the status equal to that of the districts . As a municipal division , the City of Kaspiysk is incorporated as Kaspiysk Urban Okrug . Population: 121,140 ( 2021 Census ) ; 100,129 ( 2010 Census ) ; 77,650 ( 2002 Census ) ; 60,069 ( 1989 Soviet census ) ;. Ethnic groups (2021 census): Predominant faiths of Kaspiysk city are Sunni Islam and Orthodox Christianity . The city belongs to

532-755: The ABC Islands , the rain shadows of Hispaniola 's mountain ranges in the Dominican Republic and Haiti , parts of the Southwestern United States including California's Central Valley , and sections of South America such as the sertão , the Gran Chaco , and the poleward side of the arid deserts, where they typically feature a Mediterranean precipitation pattern, with generally rainless summers and wetter winters. They are also found in few areas of Europe surrounding

570-655: The Diocese of Makhachkala . Kaspiysk parish was formed in 1990 with the blessings of the Metropolitan of Stavropol and Baku, and was officially registered in 1994. In 2000, the community consecrated St. Kazan Church . In 2010, the Seventh Day Adventists dedicated a house of worship in the city. It became the target of two explosives attacks within two months. The city is home to: At the North side of

608-599: The Mediterranean Basin . In Europe, BSh climates are predominantly found in southeastern Spain . It can also be found primarily in parts of south Greece but also in marginal areas of Thessaloniki and Chalkidiki in north Greece , most of Formentera , marginal areas of Ibiza and marginal areas of Italy in Sicily , Sardinia and Lampedusa . Cold semi-arid climates (type "BSk") tend to be located in elevated portions of temperate zones generally from

646-523: The Outback surrounding the central desert regions lies within the hot semi-arid climate region. In South Asia, both India and parts of Pakistan experience the seasonal effects of monsoons and feature short but well-defined wet seasons , but are not sufficiently wet overall to qualify as either a tropical savanna or a humid subtropical climate. Hot semi-arid climates can be also found in parts of North America , such as most of northern Mexico ,

684-610: The World Wildlife Fund (WWF) developed a scheme that divided the world's land area into biogeographic realms (called "ecozones" in a BBC scheme), and these into ecoregions (Olson & Dinerstein, 1998, etc.). Each ecoregion is characterized by a main biome (also called major habitat type). This classification is used to define the Global 200 list of ecoregions identified by the WWF as priorities for conservation. For

722-465: The human microbiome is the collection of bacteria, viruses, and other microorganisms that are present on or in a human body. A biota is the total collection of organisms of a geographic region or a time period, from local geographic scales and instantaneous temporal scales all the way up to whole-planet and whole-timescale spatiotemporal scales. The biotas of the Earth make up the biosphere . The term

760-550: The terrestrial ecoregions , there is a specific EcoID, format XXnnNN (XX is the biogeographic realm , nn is the biome number, NN is the individual number). The applicability of the realms scheme above - based on Udvardy (1975)—to most freshwater taxa is unresolved. According to the WWF, the following are classified as freshwater biomes: Biomes of the coastal and continental shelf areas ( neritic zone ): Example: Pruvot (1896) zones or "systems": Longhurst (1998) biomes : Other marine habitat types (not covered yet by

798-420: The "morphoclimatic and phytogeographical domain" of Ab'Sáber , a geographic space with subcontinental dimensions, with the predominance of similar geomorphologic and climatic characteristics, and of a certain vegetation form. Both include many biomes in fact. To divide the world into a few ecological zones is difficult, notably because of the small-scale variations that exist everywhere on earth and because of

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836-643: The Global 200/WWF scheme): Humans have altered global patterns of biodiversity and ecosystem processes. As a result, vegetation forms predicted by conventional biome systems can no longer be observed across much of Earth's land surface as they have been replaced by crop and rangelands or cities. Anthropogenic biomes provide an alternative view of the terrestrial biosphere based on global patterns of sustained direct human interaction with ecosystems, including agriculture , human settlements , urbanization , forestry and other uses of land . Anthropogenic biomes offer

874-528: The Kaspiysk naval base with an A-22 reportedly damaging two Gepard-class frigates and one Buyan-class corvette of the Caspian Flotilla and causing the nearby Makhachkala airport to halt operations. According to Russian social media the attack comprised four drones one of which crashed near a road causing a civilian to be hospitalized. Within the framework of administrative divisions , it

912-818: The city is a seaport. The city hosts the Anzhi Arena stadium, home to the FC Anzhi Makhachkala Russian football club, which competes in the Russian Football Premier League . The city was to bid to host the 2018 Summer Youth Olympics , however the bid was abandoned due to a lack of government support. The city is home to a large naval storage facility that houses Russian hovercraft and ekranoplans . [REDACTED] Media related to Kaspiysk at Wikimedia Commons Cold semi-arid climate A semi-arid climate , semi-desert climate , or steppe climate

950-498: The continent in which an area is present, it takes the same biome name—and corresponds to his "zonobiome", "orobiome" and "pedobiome" (biomes determined by climate zone, altitude or soil). In the Brazilian literature, the term biome is sometimes used as a synonym of biogeographic province , an area based on species composition (the term floristic province being used when plant species are considered), or also as synonym of

988-401: The gradual changeover from one biome to the other. Their boundaries must therefore be drawn arbitrarily and their characterization made according to the average conditions that predominate in them. A 1978 study on North American grasslands found a positive logistic correlation between evapotranspiration in mm/yr and above-ground net primary production in g/m /yr. The general results from

1026-518: The idea, calling it ecosystem . The International Biological Program (1964–74) projects popularized the concept of biome. However, in some contexts, the term biome is used in a different manner. In German literature, particularly in the Walter terminology, the term is used similarly as biotope (a concrete geographical unit), while the biome definition used in this article is used as an international, non-regional, terminology—irrespectively of

1064-525: The mid-30s to low 50s latitudes, typically bordering a humid continental climate or a Mediterranean climate . They are also typically found in continental interiors some distance from large bodies of water. Cold semi-arid climates usually feature warm to hot dry summers, though their summers are typically not quite as hot as those of hot semi-arid climates. Unlike hot semi-arid climates, areas with cold semi-arid climates tend to have cold and possibly freezing winters. These areas usually see some snowfall during

1102-410: The potential to greatly alter the distribution of Earth's biomes. Meaning, biomes around the world could change so much that they would be at risk of becoming new biomes entirely. More specifically, between 54% and 22% of global land area will experience climates that correspond to other biomes. 3.6% of land area will experience climates that are completely new or unusual. An example of a biome shift

1140-418: The seasonality of temperature and precipitation. The system, also assessing precipitation and temperature, finds nine major biome types, with the important climate traits and vegetation types . The boundaries of each biome correlate to the conditions of moisture and cold stress that are strong determinants of plant form, and therefore the vegetation that defines the region. Extreme conditions, such as flooding in

1178-494: The study were that precipitation and water use led to above-ground primary production, while solar irradiation and temperature lead to below-ground primary production (roots), and temperature and water lead to cool and warm season growth habit. These findings help explain the categories used in Holdridge's bioclassification scheme (see below), which were then later simplified by Whittaker. The number of classification schemes and

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1216-405: The system to include the rest of North America in 1981, and the world in 1989. The Bailey system, based on climate, is divided into four domains (polar, humid temperate, dry, and humid tropical), with further divisions based on other climate characteristics (subarctic, warm temperate, hot temperate, and subtropical; marine and continental; lowland and mountain). A team of biologists convened by

1254-485: The types of vegetation found in a habitat. Holdridge uses the four axes to define 30 so-called "humidity provinces", which are clearly visible in his diagram. While this scheme largely ignores soil and sun exposure, Holdridge acknowledged that these were important. The principal biome-types by Allee (1949): The principal biomes of the world by Kendeigh (1961): Whittaker classified biomes using two abiotic factors: precipitation and temperature. His scheme can be seen as

1292-480: The variety of determinants used in those schemes, however, should be taken as strong indicators that biomes do not fit perfectly into the classification schemes created. In 1947, the American botanist and climatologist Leslie Holdridge classified climates based on the biological effects of temperature and rainfall on vegetation under the assumption that these two abiotic factors are the largest determinants of

1330-522: The war effort, and became a center for major arms producers. In 1947, the settlement received the status of a city, and was given its current name, reflecting its location on the shores of the Caspian Sea. On November 16, 1996, 68 people were killed in a Chechen bomb attack targeting an apartment. On May 9, 2002, 43 people were killed after a bombing during a Victory Day Parade . On November 6, 2024, Ukraine launched its first drone attack on

1368-590: The western US, as well as the Middle East and other parts of Asia. However, they can also be found in Northern Africa, South Africa, sections of South America, sections of interior southern Australia (e.g. Kalgoorlie and Mildura ) and southern New Zealand ( Alexandra ) and sections of Europe. Biome A biome ( / ˈ b aɪ . oʊ m / ) is a distinct geographical region with specific climate , vegetation , and animal life . It consists of

1406-796: The winter, though snowfall is much lower than at locations at similar latitudes with more humid climates. Areas featuring cold semi-arid climates tend to have higher elevations than areas with hot semi-arid climates, and tend to feature major temperature swings between day and night, sometimes by as much as 20 °C (36 °F) or more. These large diurnal temperature variations are seldom seen in hot semi-arid climates. Cold semi-arid climates at higher latitudes tend to have dry winters and wetter summers, while cold semi-arid climates at lower latitudes tend to have precipitation patterns more akin to Mediterranean climates , with dry summers, relatively wet winters, and even wetter springs and autumns. Cold semi-arid climates are most commonly found in central Asia and

1444-428: Was suggested in 1916 by Clements , originally as a synonym for biotic community of Möbius (1877). Later, it gained its current definition, based on earlier concepts of phytophysiognomy , formation and vegetation (used in opposition to flora ), with the inclusion of the animal element and the exclusion of the taxonomic element of species composition . In 1935, Tansley added the climatic and soil aspects to

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