scholarly journals Estimation of the Distribution of Cryptomeria japonica on Yakushima Island by Using an Old Picture Map

2019 ◽  
Vol 101 (4) ◽  
pp. 163-167
Author(s):  
Takuhiko Murakami ◽  
Shigejiro Yoshida ◽  
Atsushi Takashima
Keyword(s):  
Cryptomeria Japonica ◽  
Yakushima Island

scholarly journals Estimation of Growth Rates Based on Tree-ring Analysis of Cryptomeria japonica on Yakushima Island, Japan

2013 ◽  
Vol 19 (1) ◽  
pp. 1-7
Author(s):  
Shizu Itaka ◽  
Shigejiro Yoshida ◽  
Nobuya Mizoue ◽  
Tetsuji Ota ◽  
Atsushi Takashima ◽  
...  
Keyword(s):  
Tree Ring ◽  
Growth Rates ◽  
Cryptomeria Japonica ◽  
Yakushima Island ◽  
Tree Ring Analysis ◽  
Ring Analysis

scholarly journals Identifying Dendroecological Growth Releases in Old-growth Cryptomeria japonica Forest on Yakushima Island, Japan

2013 ◽  
Vol 19 (1) ◽  
pp. 9-16
Author(s):  
Shizu Itaka ◽  
Shigejiro Yoshida ◽  
Nobuya Mizoue ◽  
Tetsuji Ota ◽  
Atsushi Takashima ◽  
...  
Keyword(s):  
Cryptomeria Japonica ◽  
Old Growth ◽  
Yakushima Island

scholarly journals Diversity of corticolous myxomycetes in the last glacial refugia of Cryptomeria japonica in Japan

Karstenia ◽  
2020 ◽  
pp. 260-274
Author(s):  
Kazunari Takahashi
Keyword(s):  
Species Diversity ◽  
Sea Of Japan ◽  
Cryptomeria Japonica ◽  
Host Tree ◽  
Ice Age ◽  
The Sea Of Japan ◽  
Fruiting Bodies ◽  
Yakushima Island ◽  
Biogeographical Distribution ◽  
Pacific Side

<em>Cryptomeria japonica</em>, commonly known as Japanese cedar, is now widely distributed from glacial refuges to the entire Japanese archipelago, after the last ice age. The bark surface provides a habitat for many corticolous myxomycetes. Although corticolous myxomycetes are known to prefer tree species, the association between myxomycete distribution and host tree (<em>C. japonica</em>) divergence across the refuges has not been investigated. In this study, myxomycete communities in five refuges were assessed and compared with those in 14 peripheral areas. Bark samples were collected from at least 10 trees per site and were subjected to the moist chamber culture method (10 Petri dishes per tree) to examine the myxomycete fruiting bodies strictly. Environmental variables such as geographical location, climate condition, and bark traits (tree size, bark pH, and electric conductivity) were measured. Fruiting bodies appeared in 91% of the cultures, and 32 taxa (31 species and one varie ty) were recorded. Comparison of the communities between refuges and peripheral sites showed six myxomycete species, Arcyria cinerea, <em>Macbrideola argentea</em>, <em>Cribraria minutissima</em>, <em>Clastoderma debaryanum</em>, <em>Physarum viride</em> and <em>Physarum pusillum</em>, were significantly more abundant in the refuges and these communities preserved higher species diversity. By nonmetric multidimensional scaling, the communities in the Pacific side and the Sea of Japan side were ordered based on snow cover depth, in a pattern similar to the phylogenetic distribution of the host tree. Myxomycete groups were identified in the northern region, the Sea of Japan region, and the southern region (including Yakushima Island) of Japan. Thus, the refugial tree populations preserved the myxomycete species diversity on their bark and functioned as an important hotspot for myxomycetes. The distribution of corticolous myxomycetes was associated with the diversification and biogeographical distribution history of their host tree, <em>C. japonica</em>.

Comparing 30-year diameter censuses and tree-ring chronologies in natural old-growth Cryptomeria japonica forest on Yakushima Island, Japan

2015 ◽  
Vol 20 (2) ◽  
pp. 255-262 ◽  
Author(s):  
Shizu Itaka ◽  
Shigejiro Yoshida ◽  
Nobuya Mizoue ◽  
Tetsuji Ota ◽  
Atsushi Takashima ◽  
...  
Keyword(s):  
Tree Ring ◽  
Cryptomeria Japonica ◽  
Old Growth ◽  
Yakushima Island

Historical logging and current successional status of old-growth Cryptomeria japonica forest on Yakushima Island

2017 ◽  
Vol 22 (2) ◽  
pp. 108-117 ◽  
Author(s):  
Atsushi Takashima ◽  
Atsushi Kume ◽  
Shigejiro Yoshida ◽  
Nobuya Mizoue ◽  
Takuhiko Murakami
Keyword(s):  
Cryptomeria Japonica ◽  
Old Growth ◽  
Yakushima Island ◽  
Successional Status

Changes in properties of epicuticular wax and the related water loss in Japanese cedar (Cryptomeria japonica) affected by anthropogenic environmental factors

1998 ◽  
Vol 28 (4) ◽  
pp. 546-556 ◽  
Author(s):  
Hiroyuki Sase ◽  
Takejiro Takamatsu ◽  
Tomio Yoshida ◽  
Kazuyuki Inubushi
Keyword(s):  
Water Loss ◽  
Cryptomeria Japonica ◽  
Japanese Cedar ◽  
Epicuticular Wax ◽  
Additional Stress ◽  
Mountainous Area ◽  
Atmospheric Conditions ◽  
Mountainous Areas ◽  
Yakushima Island ◽  
Leaf Chlorophyll

The leaves of Cryptomeria japonica D. Don collected near an electrochemical plant (on Yakushima Island) had more wax (approximately 10% higher in 1-year leaves) and less chlorophyll (approximately 50 and 30% lower in 0- and 1-year leaves, respectively) than those from a reference area, although the trees showed no symptoms of decline. In the Kanto Plain around Tokyo (Saitama and Ibaraki), where C. japonica is declining (dieback and (or) defoliation), the amount of epicuticular wax in current-year leaves and the leaf chlorophyll content were almost equivalent to those of healthy plants in mountainous areas, but the wax eroded more rapidly (approximately 1.5 times faster). Although the C and O contents and the C/O ratio of epicuticular wax were approximately equivalent irrespective of the levels of decline, the cuticular transpiration rate, especially in 1-year leaves, was higher in Saitama (water loss: 0.92 ± 0.21%/h) and to some extent in Ibaraki (0.66 ± 0.08%/h) than in the mountainous area (0.60 ± 0.12%/h). This excessive transpiration, probably resulting from a degraded wax layer and the partial malfunctioning of stomata due to deposited aerosols, may be a significant factor causing the decline of C. japonica. Dry atmospheric conditions (e.g., rain factor <100), which have prevailed since the 1950s due to urbanization, may have inflicted additional stress on the tree.

scholarly journals The Dynamics of Old Cryptomeria japonica Forest on Yakushima Island

Tropics ◽  
1996 ◽  
Vol 6 (4) ◽  
pp. 421-428 ◽  
Author(s):  
Eizi SUZUKI
Keyword(s):  
Cryptomeria Japonica ◽  
Yakushima Island

Discontinuous DBH–height relationship of Cryptomeria japonica on Yakushima Island: effect of frequent typhoons on the maximum height

2008 ◽  
Vol 24 (5) ◽  
pp. 1003-1011 ◽  
Author(s):  
Atsushi Takashima ◽  
Atsushi Kume ◽  
Shigejiro Yoshida ◽  
Takuhiko Murakami ◽  
Tsuyoshi Kajisa ◽  
...  
Keyword(s):  
Cryptomeria Japonica ◽  
Maximum Height ◽  
Yakushima Island ◽  
Island Effect ◽  
Relationship Of
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