scholarly journals Simulating the Productivity of Desert Woody Shrubs in Southwestern Texas

Author(s):  
Sumin Kim ◽  
Jaehak Jeong ◽  
James R. Kiniry
Keyword(s):  
Ecology ◽  
2015 ◽  
Vol 96 (8) ◽  
pp. 2289-2299 ◽  
Author(s):  
Sara E. Kuebbing ◽  
Aimée T. Classen ◽  
Jaime J. Call ◽  
Jeremiah A. Henning ◽  
Daniel Simberloff

2021 ◽  
pp. 101-109
Author(s):  
Brent H. McCown
Keyword(s):  

2013 ◽  
pp. 93-101
Author(s):  
Brent H. McCown
Keyword(s):  

2018 ◽  
Author(s):  
John Murphy ◽  
Bill Dowling

Plants of the Victorian High Country allows walkers with little botanical knowledge to identify plants they are likely to encounter along the popular tracks of Victoria's High Country. This Second Edition has been revised and expanded to describe 133 plants from the montane, sub-alpine and alpine zones, categorising them into five easily distinguished groups: herbs, daisy herbs, low woody shrubs, tall shrubs and trees, and eucalypts. The guide features a glossary of botanical terms, straightforward identification keys, clear photos of the leaves, flowers and stems of the plant, and includes notes on Aboriginal plant usage. If you are a nature lover, planning to walk in the Victorian High Country, this book is an essential addition to your backpack.


2015 ◽  
Vol 37 (1) ◽  
pp. 107 ◽  
Author(s):  
Cathryn Roberts ◽  
Martin Westbrooke ◽  
Singarayer Florentine ◽  
Simon Cook

Although red deer (Cervus elaphus) have the potential to play a major role in influencing the structure and composition of vegetation, little is known about the dietary preferences of red deer in Australia. In the Grampians National Park, Victoria, where there is a large, established red deer population, there has been concern over the condition of woodlands, with lack of perennial seedling recruitment observed. We estimated the diets of 12 red deer using macroscopic sorting techniques. We examined rumen contents of seven male and five female red deer from four woodland Ecological Vegetation Classes, which indicate that they act as intermediate feeders. A wide variety of plants were ingested, with evergreen tree species, small trees and woody shrubs making up a large proportion of the diet, along with grasses. This study found that red deer show significantly different dietary intake due to sex, with females consuming a diet much higher in grasses, while males consume more trees and shrubs. These findings have implications for the management of red deer populations within the park and broader implications for their effects on Australian ecosystems.


2017 ◽  
Vol 45 (1) ◽  
pp. 75-82 ◽  
Author(s):  
CLAUDIA CERDA ◽  
JUAN PABLO FUENTES ◽  
CARMEN LUZ DE LA MAZA ◽  
CARLA LOUIT ◽  
ANA ARAOS

SUMMARYWe estimated visitors’ willingness to pay (WTP) for a variety of environmental attributes in a protected area of the Atacama Desert, a biodiversity hotspot in northern Chile. By using a choice experiment, WTP was estimated for the protection of the following attributes: animals (mammals, amphibians, reptiles and birds), pollinating insects, plants (cacti and woody shrubs), soil quality and pristine landscapes. Visitors placed economic value on all of the attributes. The marginal mean WTP/visitor for the single levels of variation in the attributes ranged from US$4 (for supporting research on foxes) to US$26 (for maintaining soil quality) per visitor per month. These results can contribute to deciding which attributes are likely to be successful at raising funds for conservation. Our approach may be relevant to protected areas of the world with high conservation values, little funding and a lack of large, charismatic species.


2005 ◽  
Vol 19 (3) ◽  
pp. 517-522 ◽  
Author(s):  
R. James Ansley ◽  
G. Allen Rasmussen

Junipers (Juniperus spp.) are native woody shrubs that have expanded beyond their normal historical ranges in the western and southwestern United States since the late 1800s. Most ecologists and resource managers agree that juniper has become a deleterious native invasive plant that threatens other vegetation ecosystems, such as grasslands, through a steady encroachment and ultimate domination. The use of fire in managing junipers is based on a management goal to increase the disturbance return interval and thereby reduce the abundance and/or competitive impact of juniper in an ecosystem. In this paper, we discuss rates of juniper encroachment in relation to presettlement fire regimes, juniper encroachment and soil health, postfire vegetation responses, and long-term potential of different juniper treatment scenarios that involve prescribed fire.


HortScience ◽  
2008 ◽  
Vol 43 (6) ◽  
pp. 1882-1887 ◽  
Author(s):  
Diane Feliciano Cayanan ◽  
Youbin Zheng ◽  
Ping Zhang ◽  
Tom Graham ◽  
Mike Dixon ◽  
...  

Phytotoxic responses of five container-grown nursery species (Spiraea japonica ‘Goldmound’, Hydrangea paniculata ‘Grandiflora’, Weigela florida ‘Alexandra’, Physocarpus opulifolius ‘Summer Wine’, and Salix integra ‘Hakura Nishiki’) to chlorinated irrigation water and critical free chlorine thresholds were evaluated. Plants were overhead-irrigated with water containing 0, 2.5, 5, 10, and 20 mg·L−1 of free chlorine for 6 weeks. The following measurements were used to assess the treatments: visual injury, growth, leaf chlorophyll content index, leaf chlorophyll fluorescence, leaf net CO2 exchange rate, and stomatal conductance. All species exhibited one or more signs of chlorine injury, including foliar necrotic mottling, foliar necrosis and chlorosis, decreased plant height, and increased premature abscission of foliage with species varying in sensitivity to free chlorine concentrations of irrigation water. The results indicated that the critical free chlorine threshold of S. japonica, H. paniculata, W. florida, and S. integra was 2.5 mg·L−1 and 5 mg·L−1 for P. opulifolius. Our results suggested that irrigation water containing free chlorine less than 2.5 mg·L−1 should not adversely affect the growth or appearance of ornamental woody shrubs.


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