scholarly journals Do tall tree species have higher relative stiffness than shorter species?

2018 ◽  
Vol 105 (10) ◽  
pp. 1617-1630 ◽  
Author(s):  
Richard Jagels ◽  
Maria A. Equiza ◽  
Douglas A. Maguire ◽  
Damian Cirelli
Keyword(s):  
Tree Species ◽  
Relative Stiffness ◽  
Tall Tree

Factors influencing early vegetation establishment following soil scarification in a mixed forest in northern Japan

2005 ◽  
Vol 35 (1) ◽  
pp. 175-188 ◽  
Author(s):  
Toshiya Yoshida ◽  
Yoko Iga ◽  
Megumi Ozawa ◽  
Mahoko Noguchi ◽  
Hideaki Shibata
Keyword(s):  
Species Diversity ◽  
Plant Species ◽  
Tree Species ◽  
Mixed Forest ◽  
Canopy Cover ◽  
Total Density ◽  
Dwarf Bamboo ◽  
Negative Effects ◽  
Tall Tree ◽  
Northern Japan

Scarification is widely conducted in northern Japan to remove understory dwarf bamboo species in degraded forests for replacement with tree species. To explore ways to enhance species diversity and restoration of mixed forest at the treated site, we clarified the mechanisms that lead to compositional heterogeneity of plant species. We evaluated the relative importance of environmental factors (scarification properties, soil properties, light conditions, litter cover, and presence of canopy trees) for the demography of tall tree species (emergence, mortality, and growth) and whole vegetation structure (species diversity and composition) over the two growing seasons immediately following scarification. Of tall tree species, Betula spp. were dominant (60% in total density), followed by Abies sachalinensis (Fr. Schm.) Masters, Acer mono Maxim., and Phellodendron amurense Rupr. Light intensity was an important factor, having mostly negative effects on the demography of these species. Soil factors (e.g., nitrogen content, moisture) affected the demography mainly of shade-intolerant or hygrophilous species. In general, extreme environmental conditions led to the dominance of grasses, forbs, and lianas rather than tall trees. Maintenance of canopy cover, which limits light and supplies seeds as well as litter, proved to be most important in promoting plant species diversification on the scarification site.

Relationships between shoot size and branching patterns in 10 broad-leaved tall tree species in a Japanese cool-temperate forest

2006 ◽  
Vol 84 (12) ◽  
pp. 1894-1907 ◽  
Author(s):  
Takanobu Yagi
Keyword(s):  
Tree Species ◽  
Shoot Length ◽  
Lateral Spread ◽  
Stem Length ◽  
Regression Equations ◽  
Branching Patterns ◽  
Cool Temperate ◽  
Tall Tree ◽  
Architectural Development ◽  
Short Shoots

Within-tree variations in branching patterns (the patterns of daughter shoot production by mother shoots) are the basis of tree architectural plasticity and, therefore, were studied in 10 cool-temperate broad-leaved tall tree species including three species with distinct short shoots. The relationships between mother shoot length versus branching patterns (i.e., the number and size of daughter shoots) were quantified for each species using regression equations. The number and stem length of daughter shoots were greater on longer mother shoots, although the majority of daughter shoots were short on mother shoots of any size. The magnitude of lateral spread of the mother shoot – daughter shoot system relative to that of its main axis extension increased with increasing mother shoot length, indicating weaker apical control on longer mother shoots. Among species, the lower limit of daughter shoot length was shorter and the frequency of short daughter shoots was greater on mother shoots of species with more distinct short shoots. This indicates that species with distinct short shoots effectively avoid branch overcrowding by minimizing daughter shoot extension. Differences in branching patterns among mother shoots of different sizes are discussed in relation to their functional importance for tree architectural development.

Changes of leaf traits and WUE with crown height of four tall tree species

2013 ◽  
Vol 33 (18) ◽  
pp. 5644-5654
Author(s):  
何春霞 HE Chunxia ◽  
李吉跃 LI Jiyue ◽  
孟平 MENG Ping ◽  
张劲松 ZHANG Jinsong
Keyword(s):  
Tree Species ◽  
Leaf Traits ◽  
Crown Height ◽  
Tall Tree

Purification of plasma membranes from leaves of conifer and deciduous tree species by phase partitioning and free-flow electrophoresis

1995 ◽  
Vol 95 (3) ◽  
pp. 399-408 ◽  
Author(s):  
Elena Toll ◽  
Federico J. Castillo ◽  
Pierre Crespi ◽  
Michele Crevecoeur ◽  
Hubert Greppin
Keyword(s):  
Tree Species ◽  
Plasma Membranes ◽  
Free Flow ◽  
Deciduous Tree ◽  
Phase Partitioning

Biscogniauxia (Hypoxylon) Canker or Dieback in Trees

EDIS ◽  
2017 ◽  
Vol 2017 (6) ◽  
Author(s):  
Claudia Paez ◽  
Jason A. Smith
Keyword(s):  
Water Stress ◽  
Tree Species ◽  
Soil Compaction ◽  
Urban Areas ◽  
Root Disease ◽  
Poor Health ◽  
Green Spaces ◽  
Opportunistic Pathogens ◽  
Wide Range ◽  
Quercus Spp

Biscogniauxia canker or dieback (formerly called Hypoxylon canker or dieback) is a common contributor to poor health and decay in a wide range of tree species (Balbalian & Henn 2014). This disease is caused by several species of fungi in the genus Biscogniauxia (formerly Hypoxylon). B. atropunctata or B. mediterranea are usually the species found on Quercus spp. and other hosts in Florida, affecting trees growing in many different habitats, such as forests, parks, green spaces and urban areas (McBride & Appel, 2009).  Typically, species of Biscogniauxia are opportunistic pathogens that do not affect healthy and vigorous trees; some species are more virulent than others. However, once they infect trees under stress (water stress, root disease, soil compaction, construction damage etc.) they can quickly colonize the host. Once a tree is infected and fruiting structures of the fungus are evident, the tree is not likely to survive especially if the infection is in the tree's trunk (Anderson et al., 1995).

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