Ecology

Habitat

Habitat and Ecology

Habitat and Ecology
In lower montane forests it occurs as a scattered emergent with a range of angiosperm species: at higher altitudes it is associated with other conifers such as Araucaria cunninghamii, various Dacrydium and Podocarpus species.

Systems
  • Terrestrial
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Molecular Biology and Genetics

Molecular Biology

Barcode data: Papuacedrus papuana

The following is a representative barcode sequence, the centroid of all available sequences for this species.


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Statistics of barcoding coverage: Papuacedrus papuana

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 2
Specimens with Barcodes: 3
Species With Barcodes: 1
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Conservation

Conservation Status

IUCN Red List Assessment


Red List Category
LC
Least Concern

Red List Criteria

Version
3.1

Year Assessed
2013

Assessor/s
Thomas, P.

Reviewer/s
Gardner, M. & Farjon, A.

Contributor/s

Justification
Papuacedrus is assessed as Least Concern as it is still widespread and relatively abundant despite some exploitation in some parts of its range. It occurs in several protected areas as well as in very remote mountain ranges that have yet to be impacted by logging or other activities.
The nominate variety would also be Least Concern and is hence not assessed separately.
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Population

Population
Often locally dominant in cloud forests above 1,500 m.

Population Trend
Unknown
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Threats

Major Threats
Logging and forest conversion for agriculture in some parts of its range has had a limited impact.
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Management

Conservation Actions

Conservation Actions
This species is still widespread and relatively abundant despite some exploitation in some parts of its range. It occurs in several protected areas as well as in very remote mountain ranges that have yet to be impacted by logging or other activities.
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Wikipedia

Papuacedrus

Papuacedrus papuana is a species in the conifer family Cupressaceae, the sole species in the genus Papuacedrus. Some botanists do not consider this species as forming a distinct genus, but include it in the related genus Libocedrus. It is native to New Guinea and the eastern Moluccas.

It is usually a medium-sized to large evergreen tree 16–50 m tall, at high altitudes only a shrub reaching up to 3 m). The foliage is borne in flat sprays, with the leaves scale-like, in opposite pairs, with facial and lateral pairs alternating; the lateral leaves are larger, 2–3 mm long on mature trees and up to 20 mm long on young trees, the facial leaves smaller, 1 mm on mature trees and up to 8 mm on young trees. The cones are 1–2 cm long, with four scales, a small, sterile basal pair, and a larger fertile pair; the fertile scales each bearing two winged seeds.

The species has two varieties, most readily distinguishable as young plants with juvenile leaves (the adult foliage being nearly indistinguishable):

  • Papuacedrus papuana var. papuana (syn. Libocedrus papuana F.Muell., Libocedrus torricellensis Schltr., Papuacedrus torricellensis (Schltr.) H.L.Li). New Guinea, east of 138°E longitude; 620-3,800 m altitude. Juvenile leaves with a spreading, hook-like apex.
  • Papuacedrus papuana var. arfakensis (Gibbs) R.J.Johns (syn. Libocedrus arfakensis Gibbs, Papuacedrus arfakensis (Gibbs) H.L.Li). New Guinea, west of 138°E longitude, Moluccas; 700-2,400 m altitude. Juvenile leaves not spreading, the apex not free from the shoot.

References[edit]

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