Free Access

Issue Information

  • Pages: 1-3
  • First Published: 09 January 2023


Open Access

Applicability of the source–sink population concept to marine intertidal macro-invertebrates with planktonic larval stages

  • Pages: 4-41
  • First Published: 03 November 2022
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It is generally believed that local populations of marine benthic macro-invertebrates with planktonic larvae are in source–sink relationships via larval dispersal in a given regional population. Numerical simulations abound for connectivity through larvae among local/regional populations, but few empirical studies have taken local population dynamics into account for demographic connectivity analysis. I review the current research and propose a direction for demonstrating some source–sink systems in intertidal shores as a good model, which is most accessible among marine benthic habitats.


Functional biogeography: Lessons from the geographic variations in the most dominant tree species in Japan

Issue Edited by: Tsutom Hiura

Open Access

Preface: Functional biogeography in Japanese cedar

  • Pages: 42-48
  • First Published: 04 August 2022
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The study of phenotypic and genotypic variation within species represents one of the main aspects of functional biogeography. This preface presents the geographic and historical background of genetic differentiation, its role as a foundation species, and the effects of variation in functional traits on ecosystem function based on the evolutionary ecology of Japanese cedar.

Open Access

Review: Vegetation history of Cryptomeria japonica in Japan since the last interglacial period

  • Pages: 49-63
  • First Published: 13 September 2022
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Two thousand years ago, before the intensification of human activities, Cryptomeria japonica was widespread in warm- to cool-temperate zones on the Sea of Japan side of Honshu, the Izu Peninsula, the Pacific coast of Shikoku Island, and Yakushima Island.

Review: Genetic structure and local adaptation in natural forests of Cryptomeria japonica

  • Pages: 64-73
  • First Published: 04 May 2022
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Cryptomeria japonica is a very important and useful forestry tree in Japan and the natural distribution of C. japonica has adapted to widely different environments in Japan and China. The genetic structure showed clear division such as Chinese population, a group on the Sea of Japan side and a group on the Pacific Ocean side. A suitable conservation strategy for natural populations of C. japonica is ex situ conservation of large trees and applying a zoning method to the remaining natural forests.

Relation of leaf terpene contents to terpene emission profiles in Japanese cedar (Cryptomeria japonica)

  • Pages: 74-82
  • First Published: 17 May 2022
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Relation of leaf terpene contents to terpene emission profiles in Japanese cedar.

Intraspecific variation in growth-related traits—from leaf to whole-tree—in three provenances of Cryptomeria japonica canopy trees grown in a common garden

  • Pages: 83-97
  • First Published: 02 August 2022
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This study investigated intraspecific variation in growth characteristics in a tree provenance by measuring leaf-level and whole-tree functional traits. Our results indicate that most leaf traits were similar among provenances, whereas whole-tree hydraulic architecture—as explained by axial variation in the hydraulically weighted tracheid diameter—can be linked to leaf distribution with respect to light use strategies as well as water transport capacity, leading to differences in growth characteristics among provenances.

The effects of functional differences in cultivar of Cryptomeria japonica on nutrient dynamics and soil invertebrates in a common garden

  • Pages: 98-110
  • First Published: 18 August 2022
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Plantation trees have been subjected to cultivar improvement, and each of the developed cultivars has different characteristics related to nutrient dynamics. This is the first study showing the effects of cultivated variation in a canopy tree species on the relationships between plants and animal assemblages.


Open Access

Review: Monitoring of land cover changes and plant phenology by remote-sensing in East Asia

  • Pages: 111-133
  • First Published: 09 December 2022
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In this review paper, to encourage multidisciplinary research that combines in situ and satellite observations for terrestrial ecosystem and biodiversity monitoring in East Asia, we review the use of remote-sensing observations that focused on land cover changes and plant phenology in East Asia.


Tree species is more effective than season dynamics on topsoil function and CO2 emissions in the temperate forests

  • Pages: 134-145
  • First Published: 20 October 2022
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Tree species perform a more effective function in the variability of soil properties, especially chemical ones, than seasonal dynamics. Moreover, individual tree species in mixed deciduous forests strongly influence induced microbial respiration, independently of the used substrates.

Effect of local- and landscape-scale factors on the distribution of the spring-dependent species Geothelphusa dehaani and larval Anotogaster sieboldii

  • Pages: 146-153
  • First Published: 12 August 2022
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The distribution and abundance of two spring-dependent invertebrates, Geothelphusa dehaani, and larval of Anotogaster sieboldii, were surveyed, and the effects of local- and landscape-scale environmental factors were analyzed in the Lake Inbanuma watershed. The results suggested that preserving the area of the permeable surface in the watershed can contribute to conserving these species through the maintenance of flow velocity or water temperature in wetlands.

Grazing alters seedling emergence number, dynamics, and diversity of herbaceous plants in a semiarid sandy grassland

  • Pages: 154-166
  • First Published: 24 August 2022
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Seedling number and density were significantly higher, while the seedling survival rate was lower in heavily grazed plots; seedling emergence dynamics varied with grazing; and differences in species richness and diversity varied with growth stages.

Variation in abundance of trees originating from sapling banks facilitates the coexistence of two Abies species in a wave-regenerated forest

  • Pages: 167-176
  • First Published: 07 September 2022
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Relative basal area of two Abies species did not change over a period of 10 years irrespective of stand developmental stage in spite of the difference in shade tolerance between the two species.

Effects of vegetation type and topography on vegetation restoration after pipeline construction in the Northern Shaanxi Loess Plateau, China

  • Pages: 177-187
  • First Published: 03 October 2022
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We survey the vegetation disturbance areas along oil pipeline with spontaneous restoration and vegetation alongside the pipeline in slopes with different slope grade and aspect. We found that surrounding vegetation type and topography can influence the vegetation restoration in the disturbance areas.

Latitudinal gradients of reproductive traits in Japanese woody plants

  • Pages: 188-199
  • First Published: 17 October 2022
Description unavailable

The variance - mean ratio of important reproductive traits of Japanese wood plant species [a) red bars: RGB red, green: RGB green, blue: RGB blue; b) yellow: brightness, orange: saturation, violet: hue; c) light grey: seed size, grey: fruit size, dark grey: flower size] varied predictably in dependence on mean trait value, phylogenetic relatedness (SES NRI), species richness, road density, forest area, human influence (HII), and particularly in dependence on latitude. Results from a general linear model.

Open Access

Concordant genetic structures of sika deer and Japanese land leeches suggest that the current range expansion of Haemadipsa japonica is dependent on sika deer migration: A case study from Tochigi Prefecture, Japan

  • Pages: 200-210
  • First Published: 27 October 2022
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This paper considered the current range expansion of Haemadipsa japonica populations in Tochigi Prefecture via sika deer based on the genetic structure of the mitochondrial DNA and nuclear microsatellite from sika deer and from bloodmeals of H. japonica (invertebrate-derived DNA).