ESPERPA EUROASMATICA: What is, characteristics, flora and fauna

The Euroasy Steppe, also known as the great steppe, is a vast region that extends from Eastern Europe to Central Asia. If you ask yourself where the Eurasian steppe is located, it covers areas that include extensive temperate meadows, savannas and thickets in a series of ecoregions that are differentiated by altitude, climate, fauna and flora.

What countries play the Eurasian steppe?

This immense region is going through several important countries, such as Bulgaria, Serbia, Romania, Moldova, Ukraine, Hungary, Russia, Kazakhstan, Mongolia and China. Each of these countries contributes climatic and ecological particularities that make the Euroasy steppe a unique bioma.

• This region is characterized by the presence of pastures in bushes with scattered herbaceous plants, with little presence of isolated trees and bushes.
• Winters are cold with the presence of snow and occasional or frequent frosts. These conditions limit the vegetation growth season, while summers are hot and dry and generate water stress.
• The soils are fertile and allow high productivity after the rains, supporting a complex network of invertebrate interactions, birds that nest on the ground, excavating mammals, large herbivorous, reptiles and predators. The great herbivores graze intensely, have a wide distribution and are extremely important to maintain the coexistence of plant species and the nutrient cycle.
• Periodic fires are also an important factor that models the landscape and is part of the natural cycle of ecosystems.

The weather of the Euroasy Steppe is characterized by a marked continentity, with very cold winters and warm summers. During the summer months there is a seasonal water deficit, since evapotranspiration is high and exceeds water availability, which generates dry periods even when the rains do not cease completely.

Annual rainfall is usually between 250 and 750 mm, with an irregular distribution and a little marked seasonality. This regime limits the possibility of closed forests, favoring, however, the expansion of grasses and herbaceous adapted to drought.

Winter imposes strong biological restrictions: low temperatures and snow reduce the vegetation growth season to just 5–7 months. Despite this, summers are warm enough to activate an intense primary production in the grasslands.

In addition, the climatic dynamics of the steppe is influenced by the occurrence of natural fires during the driest months of the summer, mainly caused by electrical discharges. These events, which are repeated every few years or decades, contribute to maintaining the open landscape and recycling nutrients in the soil.

The flora of the Eurasian steppe is dominated by Matas grasslands, which form a relatively simple tapestry in terms of structure, but with great dynamism in its composition. Trees and shrubs are scarce or practically non -existent, since ecosystem conditions: clay and heavy soils, summer droughts, winter frosts and recurrent fires, limit their development.

Among the grasses, C3 and C4 species are combined, which vary according to the station and latitude: C4 predominate in the warm and dry months of summer, while C3 are imposed in winter or in areas with greater moisture. This seasonal alternation allows the steppe to maintain high productivity, rapidly producing nutrient -rich biomass behind the rains.

Although local endemism is not very high, the diversity of plants and invertebrates can be considerable on a small scale, which contributes to the complexity of the ecosystem. In the absence of fire or overpass, grass plumes generate a layer of dense straw, which serves as a small carrier refuge, although it can limit plant productivity.

The fauna of the Eurasian steppe reflects the close relationship between grasslands and large herbivores. These animals, together with the fires, regulate the dynamics of the ecosystem, control competition between plants and favor the coexistence of different plant species. Among the mammals are the ugulated and cervids, adapted to take advantage of the abundant herbaceous biomass, and to a lesser extent, excavating species (fosorial) as rodents, which fulfill a key role in the bioturbation and recycling of nutrients.

The predators, such as wolves, foxes and raptors, are part of a complex trophic network that maintains the ecological balance. In addition, the steppe houses numerous species of nesting birds in the soil, small mammals, reptiles and macroinvertebrates. Insects, especially the grasshopper, are large consumers of plant biomass and constitute an essential link for the functioning of the ecosystem.

• Primary productivity The steppe is one of the most extensive and productive temperate grasslands on the planet. It generates a large amount of plant biomass that supports complex trophic networks, from insects to large mammals and predators.
• Ecosystem regulation. Great herbivores and recurring fires maintain the open structure of the grasslands, preventing the expansion of shrubs and forests. This favors the coexistence of various plant and animal species.
• Cycle of nutrients and fertile soils. Excavating mammals (such as fosorial rodents) perform bioturbation, which enriches soils and redistributes nutrients. The black soils (Chernozems) of the steppe are among the most fertile in the world.
• Carbon storage. Thanks to the large amount of organic matter that accumulate its soils, the steppe contributes to carbon kidnapping, playing a relevant role in mitigating climate change.
• Habitat for biodiversity. The Euroasy Steppe constitutes the refuge of numerous species, including migratory birds and threatened species, which find in these plains key rest, food and reproduction zones.

• Conversion to agricultural lands. The fertility of the soils of the steppe has made it one of the main agricultural regions of the world. The expansion of extensive crops, such as wheat and sunflower, has caused fragmentation and loss of natural habitats.
• Overpass. Intensive domestic cattle grazing degrades vegetation coverage, compact the soils and reduces the natural regeneration of grasses.
• Fires induced by the human being. Although fire is a natural regulator in the steppe, the frequency and intensity of the fires caused by human beings exceeds ecological cycles, affecting biodiversity and structure of grasslands.
• Fragmentation and loss of habitat. Urbanization, infrastructure and agricultural expansion have fragmented the continuity of the ecosystem, reducing the areas available to isolated patches.
• Desertification The increase in temperatures and the modification in the rainfall regimes increase the estate and favor desertification processes, which threatens the stability of the long -term steppe.
• Loss of fauna. Several emblematic species, such as Saiga Antílope, are at risk of poaching, habitat reduction and diseases, which weakens the ecological functionality of the system.

If you want to read more articles similar to Easisiatics Estepa: what is, characteristics, flora and fauna, we recommend that you enter our category of ecosystems.