Age structure and regeneration of old growthCryptomeria japonica forests on Yakushima Island

Suzuki, Eizi; Tsukahara, Jun

doi:10.1007/bf02492832

Cited by 53 publications

(32 citation statements)

References 16 publications

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“…Today this genus is monotypic and inhabits 252 humid warm-temperate to cool-temperate areas of China and Japan (Tsukada, 1982). At the 253 southern limit of its distribution on Yakushima Island, Japan (30.5°N, 130.5°E), Cryptomeria japonica 254 co-dominates forests with Tsuga sieboldii and Abies firma from altitudes of 800 to 1800 m, in a 255 subtropical humid climate (Suzuki and Tsukahara, 1987). A subtropical humid climate is also 256 reconstructed from the Co-existence Approach results (Fig.…”

Section: Palynostratigraphy 171mentioning

confidence: 99%

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Palaeoenvironment, palaeoclimate and age of the Brassington Formation (Miocene) of Derbyshire, UK

Pound

Riding

2015

JGS

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The Brassington Formation is the most extensive Miocene sedimentary succession onshore in the UK. Because of its unique position at the margin of NW Europe, the pollen from this lithostratigraphical unit provides evidence on the development of vegetation affected by North Atlantic currents and hypothesized atmospheric circulation changes during the Middle to Late Miocene climate cooling. Palynostratigraphy suggests that the uppermost Kenslow Member of the Brassington Formation is not coeval. Previously, all occurrences of the Kenslow Member were assumed to be contemporary. The oldest pollen assemblage is from the more southern Bees Nest Pit, which represents a subtropical conifer-dominated forest of late Serravallian age ( c . 12 Ma). A younger assemblage was observed from the more northern Kenslow Top Pit; this indicates that a subtropical mixed forest was present during the early Tortonian (11.6–9 Ma). The shift from a conifer-dominated to a mixed forest was related to precipitation. Although the total precipitation did not change between the two assemblages, the younger assemblage had more uniform rainfall throughout the year. The diachronous nature of the Kenslow Member means that the depositional model of the Brassington Formation needs revising, and this will have implications for Neogene to recent uplift of the southern Pennines. Supplementary material: All valid formally defined palynomorph taxa below the generic level that are mentioned in this paper, with full author citations, are available at http://www.geolsoc.org.uk/SUP18889 .

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Section: Palynostratigraphy 171mentioning

confidence: 99%

“…Cryptomeria japonica on Yakushima Island (Suzuki & Tsukahara, 1987). A subtropical forest 262 environment is supported by the dominant angiosperms in the assemblage such as Carya, Ericaceae, 263…”

Section: Palynostratigraphy 171mentioning

confidence: 99%

Palaeoenvironment, palaeoclimate and age of the Brassington Formation (Miocene) of Derbyshire, UK

Pound

Riding

2015

JGS

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“…At elevations between 700 and 1,800 m, the vegetation on the island consists primarily of a mixed coniferbroadleaved forest dominated by old-growth C. japonica (Miyawaki 1980). C. japonica growing on Yakushima Island lives for more than 1,000 years (Suzuki and Tsukahara 1987). These old-growth C. japonica forests have been affected by logging activities (Yoshida and Imanaga 1990).…”

Section: Study Areamentioning

confidence: 99%

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

Itaka

Yoshida

Mizoue

et al. 2015

Journal of Forest Research

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The quality of diameter measurements for natural old-growth forest was evaluated by comparing repeated field measurements in a diameter census and treering chronologies. The diameter census was repeated three times from 1973 at 10-to 19-year intervals in old-growth Cryptomeria japonica forests on Yakushima Island, Japan. The diameter growth in the three intervals between (1) first and second measurement (15-19 years), (2) second and third measurement (10-13 years), and (3) first and third measurement (28-30 years) were calculated. The diameter growth of each interval was also measured using tree-ring chronologies as a control. There were significant differences in paired t tests for diameter growth calculated from the diameter census data and from the tree-ring chronologies when the interval was \20 years. Conversely, no significant differences were observed when the measurement interval was [27 years. The average percentage differences (APDs) were relatively high for every interval and for all diameter classes, but the APDs for the 28-to 30-year intervals were better than the 10-to 19-year intervals. The APDs followed a rising trend with increasing diameter at breast height for every interval. In conclusion, data from an interval of [27 years is required for accurate estimation of diameter growth. Furthermore, extra care should be taken when measuring large diameter trees. The results from this study demonstrated the difficulty of using a diameter census in natural old-growth forest.

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“…However, the positive correlation between rainfall and quartz (and mica) contents of soils was observed in snow-free areas such as Hawaii (Jackson et al 1971). Climate records covering 1929-1937 and 1961-1965 for the village of Kosugidani (altitude 640 m, approximately 8 km northeast of the MUD) show a maximum snow depth of 1.85 m (Suzuki and Tsukahara 1987). Thus, the maximum snow depth could be greater than 2 m in the island's mountainous areas.…”

Section: X-ray Diffraction Patternsmentioning

confidence: 99%

The influence of aeolian dust in non-allophanic Andosols on Yakushima Island

Eguchi

Tanaka²,

Maejima

et al. 2012

Soil Science and Plant Nutrition

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The oxygen isotope ( 18 O) composition of quartz and the d (060) values of clay minerals were determined from four pedons of non-allophanic Andosols derived mainly from the Holocene volcanic ash on Yakushima Island. These soils contained considerable amounts of aerosol-sized (1-10 mm) and coarse (453mm) quartz. The18 O values for the aerosol-sized quartz ranged from 14.7% to 17.4%, which was comparable to or slightly lower than known values for loess-derived Red and Yellow soils on Tanegashima Island located approximately 20 km east of Yakushima Island. The abundance and18 O values of the aerosol-sized quartz indicated that non-allophanic Andosols on Yakushima Island were strongly influenced by aeolian dust. However, the presence of coarse quartz implied that granite-derived materials were also incorporated into non-allophanic Andosols. X-ray diffraction patterns for most clay minerals showed two broad peaks around 0.154 and 0.150 nm, respectively. The d (060) values confirmed that 2:1-2:1:1 clay minerals consisted of dioctahedral and trioctahedral clay minerals. Since aeolian dust contains little or no coarse quartz and trioctahedral clay minerals, the abundance of coarse quartz and trioctahedral minerals confirmed that the occurrence of nonallophanic Andosols on Yakushima was influenced by biotite-granite, in addition to aeolian dust.

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Age structure and regeneration of old growthCryptomeria japonica forests on Yakushima Island

Cited by 53 publications

References 16 publications

Palaeoenvironment, palaeoclimate and age of the Brassington Formation (Miocene) of Derbyshire, UK

Palaeoenvironment, palaeoclimate and age of the Brassington Formation (Miocene) of Derbyshire, UK

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

The influence of aeolian dust in non-allophanic Andosols on Yakushima Island

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