ephemeral

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ephemeral

(ĭ-fĕm′ər-əl)
adj.
1. Lasting for a markedly brief time: "There remain some truths too ephemeral to be captured in the cold pages of a court transcript" (Irving R. Kaufman).
2. Having a short lifespan or a short annual period of aboveground growth. Used especially of plants.
n.
Something, especially a plant, that is ephemeral.

e·phem′er·al′i·ty, e·phem′er·al·ness n.
e·phem′er·al·ly adv.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

ephemeral

(ĕ-fĕm′ĕr-ăl) [Gr. epi, on, + hemera, day]
Of brief duration.
Medical Dictionary, © 2009 Farlex and Partners

ephemeral

(of organisms such as many desert plants) having a very short life cycle. The term is used specifically to describe those plants that have more than one generation a year, as opposed to ANNUAL, BIENNIAL, PERENNIAL.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005
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References in periodicals archive ?
Based upon the findings of this study and others, data indicates that for conservation purposes, small ephemeral ponds in the Lost Pines region should be considered ecologically distinct and necessary to maintain high local and regional biological diversity including wild populations of the Houston toad.
It is widely realized that complex interactions between competition, predation, and environmental stochasticity dictate community structure in ephemeral ponds (e.g., Wilbur 1987).
Predators in permanent ponds have a greater effect on the survival rate of tadpoles when compared to more ephemeral ponds (Skelly, 1997).
This result is consistent with patterns seen in previous studies (Morin 1983, 1995) and suggests that both these anuran species require relatively ephemeral ponds that are unlikely to support populations of salamanders or fish.
The ephemeral ponds were all interconnected and water flow was continuous through the channel.
The two predators (the salamanders Notophthalmus viridescens and Ambystoma opacum) and three herbivorous prey (the larval anurans Pseudacris crucifer (formerly Hyla crucifer), Bufo woodhousii fowleri, and Hyla andersonii) are often sympatric in natural ephemeral ponds in New Jersey and other parts of the eastern USA.
Its surface is pocked by numerous (12,000) ephemeral ponds called playas and because of the lack of geological relief, nearly 90% of all rainfall striking this plain is captured on the surface.