Ecology

Habitat

Habitat and Ecology

Habitat and Ecology
Abies vejarii is a high mountain species, occurring between (1,900-)2,800 m and 3,300 m a.s.l. on steep mountain slopes near the summits or in cool ravines. The soils are usually poor in humus content, but moist; the climate is cool, with relatively dry summers and wet winters. The species is commonly associated with various species of Pinus and with Pseudotsuga menziesii var. glauca, also with Quercus spp.; Cupressus arizonica and Picea engelmannii subsp. mexicana (another endemic relict taxon) have been reported with Abies vejarii var. mexicana.

Systems
  • Terrestrial
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Conservation

Conservation Status

IUCN Red List Assessment


Red List Category
NT
Near Threatened

Red List Criteria

Version
3.1

Year Assessed
2013

Assessor/s
Farjon, A.

Reviewer/s
Thomas, P., Perez de la Rosa, J. & Rushforth, K.

Contributor/s

Justification

Although all three varieties taken separately qualify under criterion D2 for Vulnerable, taken together the species as a whole is just too widespread and occurs in too many locations. It would take the removal of several stands (localities sampled) by e.g. destructive forest fires, before the species would qualify for Vulnerable, it is therefore assessed as Near Threatened (almost qualifies for listing as Vulnerable under criterion D2).

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Population

Population
The population is likely to be decreasing through wildfires and deforestation rather then logging.

Population Trend
Decreasing
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Threats

Major Threats
The most obvious threat to this species is the occurrence of devastating wildfires. It is not a commercial timber tree and logging, if it occurs, is limited.
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Management

Conservation Actions

Conservation Actions
Some stands of this species occur within protected areas, such as on Cerro Potosí.
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Wikipedia

Abies vejarii

Abies vejarii is a species of fir native to northeastern Mexico, in the states of Coahuila and Nuevo León, where it grows at high altitudes (2,000–3,300 m) in the Sierra Madre Oriental.[1][2]

It is a medium-sized evergreen tree growing to 35–40 m tall. The leaves are needle-like, moderately flattened, 1–2.5 cm long and 1.3–2 mm wide by 1 mm thick, grey-green with scattered stomata above, and with two greenish-white bands of stomata below. The tip of the leaf is acutely pointed. The cones are glaucous purple, maturing grey-brown, 6–15 cm long and 4–6 cm broad, with about 150–200 scales, each scale with a bract of which the apical 3–8 mm is exserted on the closed cone, and two winged seeds; they disintegrate when mature to release the seeds.[2]

References[edit]

  1. ^ a b Farjon, A. (2013). "Abies vejarii". IUCN Red List of Threatened Species. Version 2013.2. International Union for Conservation of Nature. Retrieved 3 May 2014. 
  2. ^ a b Farjon, A. (1990). Pinaceae. Drawings and Descriptions of the Genera. Koeltz Scientific Books ISBN 3-87429-298-3.


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