Relict


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Related to Relict: mesophyte, Sclerophyllous

relict

1. Ecology
a. a group of animals or plants that exists as a remnant of a formerly widely distributed group in an environment different from that in which it originated
b. (as modifier): a relict fauna
2. Geology
a. a mountain, lake, glacier, etc., that is a remnant of a pre-existing formation after a destructive process has occurred
b. a mineral that remains unaltered after metamorphism of the rock in which it occurs

Relict

(rel -ikt) A Soviet space mission launched in 1983 that made the first measurement of dipole anisotropy in the cosmic microwave background radiation.

Relict

 

an animal or plant species that exists in a given country or region as a remnant of the flora and fauna of past geological ages and that in some way is anomalous with regard to present-day conditions of existence. Relicts are identified by their ties to the plant and animal world of past ages or to definite types of vegetation. Thus, species that have been preserved without visible changes at least since the Pliocene are called Tertiary or, more correctly, Neogenic relicts.

In Colchis there are a number of remnant tree species (wing nut, zelkova, chestnut) and evergreen shrubs. The ironwood is a relict in the Talysh Mountains, and the muskrat is a relict in the Volga and Ural basins. Forest relicts in the arctic are species that advanced far to the north during the warm interglacial age and stayed there surrounded by tundra (twinflower, whortleberry, certain wintergreens). Glacial relicts are plants and animals that have survived from the ice age on a given territory.

Plant and animal species that have been preserved only in certain sectors of formerly large ranges and in this sense resemble relicts are called pseudorelicts.

A. I. TOLMACHEV

relict

[′rel·ikt]
(biology)
A persistent, isolated remnant of a once-abundant species.
(geology)
Referring to a topographic feature that remains after other parts of the feature have been removed or have disappeared.
Pertaining to a mineral, structure, or feature of a rock which represents features of an earlier rock and which persists in spite of processes tending to destroy it, such as metamorphism.
References in periodicals archive ?
In addition to the high mountain systems of the Alps and Carpathians, the space of Central Europe contains numerous middle high mountains which still host glacial relict populations (Schmitt 2009), including S.
The deformed relict primary minerals and the irregular shape of the spinel grains in the peridotite further indicate a residual mantle that has undergone high- temperature deformation under upper mantle plastic flow conditions (Nicolas, 1989; Mahmood et al.
In Rome, Raffaello Lena used Quick Map to determine the diameter and height of a relict island of old lava--a kipuka to use a Hawaiian term--that he captured in an image.
We add a new species to this species-group, based on specimens collected in 2004 and 2005 from a relict montane forest in Oaxaca, Mexico.
Aspiring relict spouses spend their life paying homage to their lost-love.
They are an odd looking bird, a relict from a different age.
One example is the relict disjunct population of loblolly pine (Pinens taeda) representing the westernmost extension of southern pine forest in the US.
Notes on the ecology of a relict population of the Lomas s Lizard Microlophus tigris (Tropiduridae: Sauria) in Las Leyendas Zoological Park, (Lima, Peru)
Survey goals were: (1) to document current distributions through collection of recent shells; (2) to document former distributions through collection of relict shells and examination of museum collections; (3) to identify changes in distribution; (4) to identify the primary natural and anthropomorphic factors impacting unionids; and (5) to develop a model to explain the documented distributions.
It is currently known only from the relict Lost Pines loblolly forest, which is a post-ice age refugium for a variety of animal and plant species not expected to occur so far west of the southeastern United States.
Plant species composition of both active and relict wallows in tallgrass prairie is significantly different from adjacent prairie, even after more than 125 y of inactivity (Gibson, 1989).