Effect of gender on sap-flux-scaled transpiration in a dominant riparian tree species: Box elder (Acer negundo)

2007 ◽  
Vol 112 (G3) ◽  
pp. n/a-n/a ◽  
Author(s):  
K. R. Hultine ◽  
S. E. Bush ◽  
A. G. West ◽  
J. R. Ehleringer
Keyword(s):  
Tree Species ◽  
Sap Flux ◽  
Acer Negundo ◽  
Box Elder ◽  
Riparian Tree

scholarly journals Gender-specific patterns of aboveground allocation, canopy conductance and water use in a dominant riparian tree species: Acer negundo

2008 ◽  
Vol 28 (9) ◽  
pp. 1383-1394 ◽  
Author(s):  
K. R. Hultine ◽  
S. E. Bush ◽  
A. G. West ◽  
K. G. Burtch ◽  
D. E. Pataki ◽  
...  
Keyword(s):  
Water Use ◽  
Tree Species ◽  
Canopy Conductance ◽  
Acer Negundo ◽  
Riparian Tree ◽  
Gender Specific

Host Plant Associations among Species in Two Macrolepidopteran Assemblages

2003 ◽  
Vol 38 (1) ◽  
pp. 41-47 ◽  
Author(s):  
Pedro Barbosa ◽  
Astrid Caldas ◽  
Gaden Robinson
Keyword(s):  
Host Plant ◽  
Tree Species ◽  
The United States ◽  
New Host ◽  
Black Willow ◽  
Plant Associations ◽  
Box Elder ◽  
Host Tree Species ◽  
Riparian Tree ◽  
New Host Records

Host plant associations of macrolepidopteran species in assemblages on box elder, Acer negundo L., and black willow, Salix nigra (Marsh), were characterized. Almost 90% of the macrolepidoptera collected on these two riparian tree species of the mid-Atlantic area of the United States were new host records. Larvae of 87 species (and another nine specimens identified to genus) were collected on box elder and black willow. About one-fifth of the species were found exclusively on box elder, one-third exclusively on black willow, and about one-half of the macrolepidopteran species were found on both tree species. Although many macrolepidopterawere found on both tree species, they were not equally abundant on both trees, suggesting a predominantly favored tree species. However, there was no statistically significant asymmetry in host tree species use.

scholarly journals Assessment of adaptive capacity of native and adventive species of trees and shrubs in Dnipro region

2021 ◽  
Vol 50 ◽  
pp. 12-21
Author(s):  
I. A. Ivanko ◽  
A. F. Kulik
Keyword(s):  
Invasive Species ◽  
Peroxidase Activity ◽  
Tree Species ◽  
Native Species ◽  
Steppe Zone ◽  
Morus Alba ◽  
Acer Platanoides ◽  
Ulmus Pumila ◽  
Acer Negundo ◽  
Ulmus Laevis

Nowadays, deterioration and loss of ecological functions of urban tree and shrub plantations take place in Europe and, in particular, in Ukraine; it was noted that their number is insufficient to counteract the negative impact of global climate change and protect the population against industrial pollution effects. The issue of resistance of native and adventitious tree species used in the plantations of industrial cities remains relevant; it necessitates the assessment of physiological and biochemical aspects of their adaptation to extreme environmental factors, such as moisture limit in the steppe zone, periodic dangerously low winter temperatures and anthropo-technogenic load (in large urban agglomerations). In order to optimize the assortment of tree species of large megalopolises of the steppe zone of Ukraine and determine their potential resistance to anthropogenic pressures the study was conducted in conditionally clean forest biogeocenoses of the Samara River levee zone and in artificial plantations on the territories located in the coastal zone of the Dnipro River within 1500 m from the Prydneprovskaya thermal electric station (PTES, Dnipro city). It well known that the TPP is the source of atmospheric air pollution by such heavy metals as lead and cadmium. A study of the activity of antioxidant protection enzymes in leaves of native and adventive tree species showed that in the zone of Prydneprovskaya TES impact there was an increase of guaiacol peroxidase activity in Acer platanoides, Ulmus minor, Morus alba; benzidine peroxidase in Acer negundo, Ulmus laevis, Acer platanoides; catalase in A. platanoides, A. negundo, U. laevis, Ulmus pumila and Robinia pseudoasasia. High peroxidase activity, which is complemented by higher catalase activity, indicates the relative resistance of these species to atropo-technogenic pressures supported by antioxidant defense mechanisms. Total chlorophyll content (Chla + Chlb) in leaves of native species Ulmus laevis, Acer platanoides and adventive Morus alba decreased in the zone of TPP impact in relation to conditionally clean areas. The ratio of chlorophyll a to chlorophyll b in contaminated areas significantly increased in leaves of native species Ulmus laevis, Ulmus minor, Acer platanoides compared with control. The invasive species Acer negundo, Morus alba, Ulmus pumila had no significant changes in this indicator. In invasive species such as Ulmus pumila, Acer negundo there was an increase in leaf mass, which may indicate adaptation of these species to anthropogenically altered growth conditions.

SHADING AND LIGHT INTERCEPTION IN THICKETS OF INVASIVE ACER NEGUNDO AND SORBARIA SORBIFOLIA

2021 ◽  
Vol 14 (4) ◽  
pp. 30-42
Author(s):  
D. V. Veselkin ◽  
D. I. Dubrovin ◽  
O. S. Rafikova ◽  
Y. A. Lipikhina ◽  
N. V. Zolotareva ◽  
...  
Keyword(s):  
Plant Species ◽  
Tree Species ◽  
Invasive Plant ◽  
Light Interception ◽  
Rubus Idaeus ◽  
Middle Urals ◽  
Forest Edges ◽  
Acer Negundo ◽  
Invasive Shrub ◽  
Forest Parks

The aim of the work is to establish how greatly the light conditions change under the leaf canopy of two invasive plant species in the Middle Urals - Acer negundo and Sorbaria sorbifolia . In June - August 2020, using a portable light meter, 8370 measurements of illumination were performed in forest parks (at a height of 1.5 and 0.5 m, i.e. above and below the canopy of the leaves of the invasive shrub S. sorbifolia and the native shrub Rubus idaeus ; in random points under the canopies of Pinus sylvestris ; on glades, paths and forest edges) and in urban habitats (at a height of 1.5 m and 0.5 m in dense thickets of the invasive tree A. negundo and other tree species). The average illumination intensity was as following: under S. sorbifolia - 4 ± 1 lux × 10; under R. idaeus - 7 ± 1 lux × 10; in A. negundo thickets - 13 ± 2 lux × 10; in thickets of other tree species - 25 ± 4 lux × 10; under the canopies of urban pine forests - 80 ± 10 lux × 10; in the forest edges - 96 ± 14 lux × 10. In dense thickets, A. negundo intercepts about 94% of the light falling on its canopies, S. sorbifolia - about 93%. This is significantly higher than the light interception level in habitats used as control: other tree species canopies of greatly urbanized habitats intercept about 89%, the thickets of R. idaeus - about 82%. Thus, invasive plants reduce the amount of light available to other plant species in communities significantly more than native plants.

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