East European forest steppe

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East European forest steppe
20140614 151745 Richtone(HDR).jpg
The Central Black Earth Nature Reserve, an example of forest steppe terrain, in Kursk Oblast, Russia
Ecoregion PA0419.svg
Ecoregion territory (in purple)
Ecology
Realm Palearctic
Biome temperate broadleaf and mixed forests
Borders
Geography
Area727,269 km2 (280,800 sq mi)
Countries
Conservation
Conservation status Critical/endangered
Protected35,989 km² (5%) [1]

The East European forest steppe ecoregion (WWF ID: PA0419) is a patchwork of broadleaf forest stands and grasslands (steppe) that stretches 2,100 km across Eastern Europe from the Ural Mountains in Ural, through Povolzhye, Central Russia to the middle of Ukraine. There are isolated areas of similar character off the western end in eastern Romania, Moldova, and Bulgaria. [2]

Contents

The region forms a transition zone between the temperate forests to the north, and the steppe to the south. The forest-steppe is an area of Russia in which precipitation and evaporation are approximately equal. [2] The ecoregion is in the Palearctic realm, with a Humid Continental climate. According to one definition of its boundaries, it covers 727,269 km2 (280,800 sq mi). [3]

Location and description

The ecoregion forms a long band, about 2,100 km long and 600 km wide, from the western edge of Siberia at the Ural Mountains in Ural in the east, through Povolzhye, to Central Russia and Ukraine. Most of the terrain is rolling hills and some plains. Average elevations range from 150 meters (above sea level) in the lowlands to 250 meters in the hills, with some isolated ranges of low mountains on the edges of the area. [2] [3] [4]

The ecoregion can be divided into sub-provinces from west to east: Dnieper Upland, Dnieper Lowland, Central Russian Upland, Oka–Don Plain, Volga Upland, and the Trans-Volga. Moisture diminishes as the ecoregion stretches to the east, as does the forest fragmentation. [5]

Climate

The climate in most of the ecoregion is Humid continental climate, warm summer (Köppen climate classification (Dfb)). This climate has large seasonal temperature differentials. It has a warm summer, with at least four months averaging over 10 °C (50 °F), but no month averaging over 22 °C (72 °F). [6] [7] Seasonal temperature extremities increase eastward across the ecoregion, due to the nature of continental climate towards the center of the continent.

Flora

The natural vegetation of the forest steppe is a mosaic of woodlands and open shrublands and grasslands.

Shrublands typically include the shrubs Caragana frutex, Prunus fruticosa , and Prunus stepposa . Stipa ucrainica and Bromus riparius are common grasses.

Typical trees of the woodlands and forests include Quercus robur, Tilia cordata, Acer platanoides , and Corylus avellana . [8]

For centuries, scientists have speculated on the causes of variations in stands of trees. It is currently understood that on the macro level, steppes are more arid and that trees thin out in the transition zones. Because the terrain of the ecoregion is relatively flat or low hills, with no physical barriers between the biomes to the north and south, the plant communities tend to be shaped by local variations in water flow. Differences in drainage, variations in soil type (pine trees on sandy soil, deciduous trees on loamy soil, etc.) and salinity, the effects of blowing wind (which drives snow off the hills into depressions, affecting soil quality), and the historic activities of humans all combine to create the mosaic character of the region. [2]

Open landscapes show that steppe plant communities can compete with forest. Sedges are characteristic in the steppe areas, resisting low-moisture conditions with much of their biomass underground. [9]

Fauna

Characteristic mammals include the bobak marmot (Marmota bobak) and European ground squirrel (Spermophilus citellus). The European bison (Bison bonasus) and Saiga antelope (Saiga tatarica tartarica) formerly lived in the forest-steppe, but are now locally extinct.

Protected areas

The East European forest steppe has been affected heavily by human pressure: over half is arable land, and the natural forest stands have mostly been cleared. Little of the territory is legally protected as nature reserves, and such reserves that exist tend to be small tracts set aside for study. Representative protected areas in the ecoregion include:

See also

Related Research Articles

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<span class="mw-page-title-main">Khvalynsky National Park</span> National park in Saratov Oblast, Russia

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<span class="mw-page-title-main">Bashkiriya National Park</span>

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<span class="mw-page-title-main">Samarskaya Luka National Park</span> National park in Russia

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<span class="mw-page-title-main">Kerzhenets Nature Reserve</span> Strict nature reserve in Nizhny Novgorod Oblast, Russia

Kerzhinski Nature Reserve is a Russian 'zapovednik' located in the middle basin of the Kerzhenets River, 600 kilometres (370 mi) east of Moscow. The terrain features extensive upland and lowland swamps, and is known in particular as a site for the study of beavers, and their effects on recovery of the landscape after fires and logging. The reserve is situated 55 km northeast of the City of Nizhny Novgorod in the Bor and Semonov districts of Nizhny Novgorod Oblast. The site has been a center for scientific study of nature of the region since 1933. It is part of a UNESCO Biosphere Reserves, Ramsar wetland. The reserve was established in its current form in 1993, and covers an area of 46,940 ha (181.2 sq mi).

<span class="mw-page-title-main">Ilmen Nature Reserve</span> Nature reserve in Chelyabinsk Oblast, Russia

Ilmen Nature Reserve is a Russian 'zapovednik' that was created by decree of Vladimir Lenin, in 1920 as a mineralogical nature reserve. It is the site of deposits of many rare-earth minerals - 16 minerals were first discovered here, including Ilmenite, Monazite, Cancrinite, and Samarskite-(Y). There have been over 400 mines in the area over the years. The Reserve's geological museum is one of the largest in Russia. The forest cover is pine and larch forest on low hills of the Ilmensky Mountains and foothill ridges on east side of the south Ural Mountains. The reserve is situated just north and east of the city of Miass, in the Chebarkulsky District of Chelyabinsk Oblast. It is also 20 kkm east of Taganay National Park and 75 km west of Chelyabinsk.

<span class="mw-page-title-main">Belogorye Nature Reserve</span> Nature reserve in Belgorod Oblast, Russia

Belogorye Nature Reserve is a Russian 'zapovednik', one of the last intact riverine old-growth oak forests, which was once representative of the East European forest-steppe. The reserve is one of the oldest and smallest nature reserves in Russia, first formed in 1924 but reorganized several times since. It is on the southwestern slope of the Central Hills on the western edge of Russia. The reserve is situated in the Belgorodsky District of Belgorod Oblast. The reserve was created in 1935, and covers an area of 2,131 ha (8.23 sq mi).

<span class="mw-page-title-main">Visim Nature Reserve</span> Strict nature reserve in Sverdlovsk Oblast, Russia

Visim Nature Reserve is a Russian 'zapovednik' protecting an area of southern taiga in the low Middle Ural Mountains. In 2001, it was named a UNESCO MAB Biosphere Reserve. It is named for the ancient village of Visim, which was home to the Russian writer Dmitry Mamin-Sibiryak, who wrote about rural life in the Urals. Most of the reserve is located on its western slope in the headwaters of the Sulёm River, a right tributary of the Chusovoi River, part of the vast Volga-Kama basin. Part, however is on the eastern slope in the Ob River watershed. The reserve thus straddles the Europe-Asia continental divide: water from the reserve flows into both the Caspian Sea through the Volga River, and the Kara Sea through the Ob River. The reserve is situated in the Kirovgrad District of Sverdlovsk Oblast, about 100 km northwest of Yekaterinburg.

<span class="mw-page-title-main">Shulgan-Tash Nature Reserve</span> Nature reserve in Bashkortostan, Russia

Shulgan-Tash Nature Reserve is a Russian 'zapovednik' in the western foothills of the Southern Ural Mountains. The terrain is one of heavy forest and karst topography; the site contains some of the oldest caves of human habitation. The reserve has 13 full-time "bortniks" - practitioners of the ancient apiculture (bee-keeping) of tree-hollow cultivation of wild honeybees. The reserve is situated in the Burzyansky District of Bashkortostan. It is about 40 km southeast of the District town of Starosubkhangulovo. In 2012, the reserve was added to the UNESCO Biosphere Reserve "Bashkir Ural", in particular for protection of the Burzyuan bee, which has been cultivated since ancient times by the local Bashkir people.

Prisurski Nature Reserve is a Russian zapovednik in the northern Volga Uplands of the East European Plain. It protects for study an area of forest-steppe and mixed forest, with sections in different parts of Chuvashia. The largest sector is the Alatyrski Nature Reserve, located in the valley of the Sura River, and two small steppe sections to the southeast. The reserve is situated in the Alatyr, Chuvash Republic District of the Chuvash Republic. It was set aside as a reserve in 1995 to protect the largest and least disturbed area of southern taiga lowland forest in Chuvashia, as well as steppe habitat at the northern edge of its range. A particular concern was protecting habitat of the muskrat and seasonal waterfowl. The reserve covers an area of 9,150 ha (35.3 sq mi).

<span class="mw-page-title-main">Volga-Kama Nature Reserve</span> Nature reserve in Tatarstan, Russia

Volga-Kama Nature Reserve is a Russian 'zapovednik' at the confluence of the Volga River, the Kama River, and the Myosha River. There are two sections to the reserve, one on the left bank terraces of the Volga, at the actual meeting point of the rivers, the other section about 100 km up the Volga on the western outskirts of the city of Kazan. The reserve is situated in the Zelenodolsky Districts and Laishevsky District of Tatarstan. It was formally established in 1960 to protect remaining forest and forest-steppe habitat of the middle Volga region, and has an area of 8,024 ha (30.98 sq mi). A particular focus of scientific study is the effects of the Kuybyshev Reservoir on the local environment. The reservoir was completed in the mid-1950s, and is the largest reservoir in Europe. The Volga-Kama Reserve is part of a UNESCO Biosphere Reserve.

<span class="mw-page-title-main">Privolzhskaya Lesostep Nature Reserve</span> Nature reserve in Penza Oblast, Russia

Privolzhskaya Lesostep Nature Reserve is a Russian zapovednik situated in the watershed midway between the Volga River and the Don River. The reserve is divided into 5 sectors, all in the western part of the Volga Uplands. Three of the sectors are steppe terrain, and two are forests. Rivers with upper reaches in the reserve flow into both the Don and the Volga. Administratively, the reserve is situated in the Kuznetsky District of Penza Oblast. The reserve was formally established in 1989 with the stated purpose of protecting representative habitat of the northern steppes, and the transition zone from steppe to forest. Some sections of the reserve, however, have been protected since 1919. In all, the reserve sectors cover an area of 8,373 ha (32.33 sq mi), and has additional buffer zones out to 1 km from the reserve borders.

<span class="mw-page-title-main">Orenburg Nature Reserve</span> Strict nature reserve in Orenburg Oblast, Russia

Orenburg Nature Reserve is a Russian 'zapovednik' dedicated to the preservation and restoration of four separate types of steppe landscape: Transvolga, Ural Mountains, Southern Urals and Trans-Urals. The reserve does this by spreading out across four sections across 400 km of steppes in Orenburg Oblast below the southern terminus of the Ural Mountains. The city of Orenburg sits in the middle of the four sectors, approximately 1,200 km southeast of Moscow. The reserve also protects historical and archaeological sites of the Sarmation people from the seventh to third century BCE. The reserve was formally established in 1988, and covers a total area of 21,653 ha (83.60 sq mi).

<span class="mw-page-title-main">West Siberian taiga</span> Ecoregion which covers the West Siberian Plain in Russia

The West Siberian taiga ecoregion covers the West Siberian Plain in Russia, from the Ural mountains in the west to the Yenisei River in the east, and roughly from 56° N to 66° N latitude. It is a vast, flat lowland region of boreal forests (taiga), and wetlands, covering an area about 1,800 km west–east, by 1,000 km north–south.

<span class="mw-page-title-main">Urals montane tundra and taiga</span> Ecoregion which covers the main ridge of the Ural Mountains

The Urals montane tundra and taiga ecoregion covers the main ridge of the Ural Mountains - a 2,000 km (north-south) by 300 km (west-east) region. The region is on the divide between European and Asian ecoregions, and also the meeting point of tundra and taiga. It is in the Palearctic realm, and mostly in the Boreal forests/taiga ecoregion with a Humid continental climate, cool summer climate. It covers 174,565 km2 (67,400 sq mi).

<span class="mw-page-title-main">Central European mixed forests</span>

The Central European mixed forests ecoregion is a temperate hardwood forest covering much of northeastern Europe, from Germany to Russia. The area is only about one-third forested, with pressure from human agriculture leaving the rest in a patchwork of traditional pasture, meadows, wetlands. The ecoregion is in the temperate broadleaf and mixed forest biome, and the Palearctic realm, with a Humid Continental climate. It covers 731,154 km2 (282,300 sq mi).

<span class="mw-page-title-main">Kazakh forest steppe</span>

The Kazakh forest steppe ecoregion is a long thin strip of transition zone between the forested taiga of Siberian Russia, and the Kazakh steppe to the south. The ecoregion stretches over 2,000 km from the southern Ural mountains in the west to the foothills of Altai mountains in the east, yet averages only 200 km from south to north across its length. Because the region is farther inland than European forest steppe, and some 300 to 500 km farther north, the climate is more continental and with less precipitation the tree cover more sparse. The ecoregion is in the Temperate grasslands, savannas, and shrublands biome, and the Palearctic realm, with a Humid Continental climate. It covers 420,614 km2 (162,400 sq mi).

<span class="mw-page-title-main">Holy Mountains National Nature Park</span> National park in Ukraine

Holy Mountains National Nature Park is located along the chalk cliffs and river terraces of the Donets River in Eastern Ukraine. The park's boundaries are a patchwork of forested areas stretching along the banks of the Donets. The Holy Mountains of Ukraine contain many archaeological, natural, historical, and recreational sites, including the Sviatohirsk Lavra monastery. The park is located in the administrative districts of Sloviansk, Lyman and Bakhmut; all are in the north of Donetsk Oblast.

References

  1. Eric Dinerstein, David Olson, et al. (2017). An Ecoregion-Based Approach to Protecting Half the Terrestrial Realm, BioScience, Volume 67, Issue 6, June 2017, Pages 534–545; Supplemental material 2 table S1b. doi:10.1093/biosci/bix014
  2. 1 2 3 4 "Biomes and Regions of Northern Eurasia - Steppe and Forest Steppe". Russian Nature. Retrieved August 13, 2018.
  3. 1 2 "East European forest steppe". Ecoregions of the World. GlobalSpecies.org. Retrieved July 23, 2018.
  4. "PA0419: Eastern Europe: Bulgaria, Moldova, Romania, Russia, and Ukraine". World Wildlife Federation. Retrieved July 23, 2018.
  5. "Biomes and Regions of Northern Eurasia - Classifications: Zonal and Provincial Differences". Russian Nature. Retrieved August 13, 2018.
  6. Kottek, M.; Grieser, J.; Beck, C.; Rudolf, B.; Rubel, F. (2006). "World Map of Koppen-Geiger Climate Classification Updated" (PDF). Gebrüder Borntraeger 2006. Retrieved September 14, 2019.
  7. "Dataset - Koppen climate classifications". World Bank. Retrieved September 14, 2019.
  8. Chilbilyov, Alexander (2003). "Steppe and Forest-steppe". In Maria Shahgedanova (ed.). The Physical Geography of Northern Eurasia. Oxford University Press. ISBN   978-0-19-823384-8.
  9. "Biomes and Regions of Northern Eurasia - Biological Diversity". Russian Nature. Retrieved August 13, 2018.