Overview

Distribution

Range Description

Japan: Honshu (Chichibu, Yatsugatake, Akaishi). The two varieties (maximowiczii and senanensis) are confined to small and scattered populations on Fuji-San and Yatsugatake Mountains.
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Physical Description

Type Information

Type collection for Picea maximowiczii Regel ex Carrière
Catalog Number: US 63534
Collection: Smithsonian Institution, National Museum of Natural History, Department of Botany
Verification Degree: Card file verified by examination of alleged type specimen
Preparation: Pressed specimen
Collector(s): S. Tschonoski
Year Collected: 1864
Locality: Nippon., Japan, Asia-Temperate
  • Type collection: Carrière, E. A. 1867. Traite Gen. Conif. 347.
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Ecology

Habitat

Habitat and Ecology

Habitat and Ecology
Picea maximowiczii is a rare species of the high mountains in central Honshu, where it occurs at elevations between 1,100 m and 2,000 m a.s.l. The soils are derived from volcanic rock and usually podzolic. The climate is moist, with cool summers and cold winters, the annual precipitation ranges between 1,000 mm and 2,000 mm. It occurs in small, scattered groups, usually associated with Juniperus rigida, sometimes with Pinus densiflora and various broad-leaved trees, mostly in very open, grassy terrain. The variety senanensis has been found with Picea alcoquiana and P. koyamae (Hayashi 1969 cited in Schmidt-Vogt 1977).

Systems
  • Terrestrial
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Molecular Biology and Genetics

Molecular Biology

Barcode data: Picea maximowiczii

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


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Source: Barcode of Life Data Systems (BOLD)

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Statistics of barcoding coverage: Picea maximowiczii

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 4
Specimens with Barcodes: 4
Species With Barcodes: 1
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Conservation

Conservation Status

IUCN Red List Assessment


Red List Category
EN
Endangered

Red List Criteria
A2acde; B1ab(iii,v)+2ab(iii,v)

Version
3.1

Year Assessed
2013

Assessor/s
Katsuki, T. & Luscombe, D

Reviewer/s
Thomas, P. & Farjon, A.

Contributor/s

Justification
The assessment of the entire species follows that of var. maximowiczii which has been assessed as Endangered following recent over-exploitation and the conversion of Picea forests to plantation forests planted with larch (Larix kaempferi). There has been a population eduction of more than 50% and regeneration is poor and mature trees are declining. There are some doubts about the taxonomic distinction of var. senanensis but even if it is distinct, its population represents only a very small part of the whole.

History
  • 1998
    Vulnerable
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Population

Population
Subpopulations are small and severely fragmented.

Population Trend
Decreasing
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Threats

Major Threats
Despite its bushy habit (or is that a result?) this spruce has been over-exploited and present populations are scattered and small. It is a slow grower and regeneration is often hampered by changes of land use that have caused habitat degeneration. Most trees are now situated in State Forests and would therefore enjoy some measure of protection.
Overexploitation of the tree and the habitat has occurred in the past. Much of the habitat remains degraded and regeneration is poor.
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Management

Conservation Actions

Conservation Actions
This species occurs mainly within a State Forest. Restoration programmes are needed.
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Wikipedia

Picea maximowiczii

Japanese Bush Spruce (Picea maximowiczii) is a species of conifer in the pine family. It is endemic to Japan; its range is limited to Akaishi Mountains, Okuchichibu Mountains and the Yatsugatake Mountains on Honshu.

References[edit]

  1. ^ Katsuki, T. & Luscombe, D (2010). "Picea maximowiczii". IUCN Red List of Threatened Species. Version 3.1. International Union for Conservation of Nature. Retrieved 2013-11-10. 

Source[edit]

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