An alvar is a biological environment based on a limestone plain with thin or no soil and, as a result, sparse grassland vegetation. Often flooded in the spring, and affected by drought in midsummer, alvars support a distinctive group of prairie-like plants. [1] .

Alvar is a grass- and sedge-dominated community, with scattered shrubs and sometimes trees. The community occurs on broad, flat expanses of calcareous bedrock (limestone or dolostone) covered by a thin veneer of mineral soil, often less than 25 cm deep.

The Alvars (Tamil: ஆழ்வார், romanized: Āḻvār, lit. 'The Immersed') were the Tamil poet-saints of South India who espoused bhakti (devotion) to the Hindu preserver deity Vishnu, in their songs of longing, ecstasy, and service. [2] . They are venerated in Vaishnavism, which regards Vishnu as the Ultimate Reality.

Alvars are naturally open habitats with either a thin covering of soil or no soil over a base of limestone or dolostone. Their unique geologic and physical characteristics set the stage for natural communities that simply cannot exist elsewhere. Where are alvars found?

The meaning of ALVAR is the plant community consisting typically of mosses and calciphilous herbaceous plants that grows on steppelike shallow alkaline soils overlying Scandinavian limestones.

Almost all of North America’s alvars occur within the Great Lakes basin, primarily in an arc from northern Lake Michigan across northern Lake Huron and along the southern edge of the Canadian Shield to include eastern Ontario and northwestern New York state.

Alvar is a Swedish term used to describe dry grasslands found on limestone pavements. The last glacier receded over 10,000 years ago, leaving no, or only a very thin (up to 10 inches), soil layer over limestone bedrock.

Jul 17, 2023 · This alvar is home to many unique and rare species. The federally threatened dwarf lake iris, a variety of pollinator-friendly goldenrods, and bottle gentian are found here. Around the globe, alvars face threats from invasive species and human encroachment, putting them at high risk of extinction.

Álvar Núñez Cabeza de Vaca (Spanish pronunciation: [ˈalβaɾ ˈnuɲeθ kaˈβeθa ðe ˈβaka] ⓘ; c. 1488/90/92 [1] – after 19 May 1559 [2]) was a Spanish explorer of the New World, and one of four survivors of the 1527 Narváez expedition.

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