Headwater macroinvertebrate community response to riparian red alder (Alnus rubra Bong.) in southeast Alaska

2008 ◽  
Vol 84 (3) ◽  
pp. 220-237 ◽  
Author(s):  
R. K. Kimbirauskas ◽  
R. W. Merritt ◽  
M. S. Wipfli ◽  
P. Hennon
Keyword(s):  
Community Response ◽  
Macroinvertebrate Community ◽  
Alnus Rubra ◽  
Red Alder ◽  
Southeast Alaska

Character-marked furniture made from red alder harvested in southeast Alaska: product perspectives from consumers and retailers

2009 ◽  
Vol 39 (12) ◽  
pp. 2450-2459 ◽  
Author(s):  
Matthew Bumgardner ◽  
David Nicholls ◽  
Valerie Barber
Keyword(s):  
Pacific Northwest ◽  
Forest Products ◽  
Alnus Rubra ◽  
Lower Grade ◽  
Pioneer Species ◽  
Lens Model ◽  
Policy Capturing ◽  
Red Alder ◽  
Southeast Alaska ◽  
Income Stream

In recent decades, red alder ( Alnus rubra Bong.) has become an important Pacific Northwest hardwood in appearance-grade lumber markets, such as exports, furniture, and cabinets. However, red alder generally is a short-lived pioneer species, and small logs can result in proportionally large volumes of lower grade lumber containing numerous visual defects, such as knots, often referred to as character marks. Given that markets for character-marked wood could provide an income stream for management of red alder, it becomes important to understand consumer and retailer response to character-marked red alder products. In the current study, we used a policy capturing approach (the lens model) to assess the cues used by furniture consumers and retailers to evaluate several furniture pieces constructed from character-marked red alder lumber. The cues used by consumers and retailers to form willingness-to-pay judgments were found to be different. Character marks, design, and naturalness were important to consumers. None of the investigated cues were significant to retailers, suggesting they were using an entirely different model. Such divergence creates challenges in the forestry supply chain for development of new forest products.

A Comparison of Diameter-and Volume-Based Stocking Guides for Red Alder

1989 ◽  
Vol 4 (4) ◽  
pp. 113-115 ◽  
Author(s):  
David E. Hibbs ◽  
Gary C. Carlton
Keyword(s):  
United States ◽  
Stand Density ◽  
The Self ◽  
Western United States ◽  
Alnus Rubra ◽  
Stem Density ◽  
Red Alder ◽  
Rule Based ◽  
Density Index ◽  
Stand Density Index

Abstract Stocking guides based on Reineke's stand density index concept (diameter vs stem density) and on the self-thinning rule (volume vs stem density) are currently in use in the western United States. A self-thinning rule-based guide has been developed for red alder (Alnus rubra). In this paper, we develop a Reineke-type guide for red alder and compare the growth of thinned and self-thinning stands in both systems. Stand density appears to be defined differently in the two systems, leading to differences in density management prescriptions. West. J. Appl. For. 4(4):113-115, October 1989.

scholarly journals Phosphorus Additions Increase the Early Growth of Red Alder (Alnus rubra Bong.) on Vancouver Island

2007 ◽  
Vol 22 (2) ◽  
pp. 116-123 ◽  
Author(s):  
Kevin R. Brown ◽  
P.J. Courtin
Keyword(s):  
Vancouver Island ◽  
Alnus Rubra ◽  
Moisture Regime ◽  
P Availability ◽  
Red Alder ◽  
Single Tree ◽  
Nutrient Additions ◽  
Soil Moisture Regime ◽  
Triple Super Phosphate ◽  
Foliar Concentrations

Abstract The effects of nutrient additions on growth of the red alder (Alnus rubra Bong.) are not well known. We examined the growth and nutritional responses of 10 young (0–4 years old at time of fertilization) red alder plantations on eastern Vancouver Island to additions of phosphorus (P), added as triple super phosphate, and a blended fertilizer (F) containing elements other than nitrogen (N), P, and calcium (Ca). Site fertility classes ranged from poor to very rich and soil moisture regime classes ranged from moderately dry to very moist. Nutrients were added in single-tree plots and responses were measured for up to 3 years after fertilization. In plantations fertilized within 1 year of planting, P additions increased heights (average of 17%), basal diameters (28%), and stem volumes (68%) over a 3-year period and increased 1st-year foliar concentrations of P, N, and S. The fertilizer supplying other elements also increased concentrations of N and S, along with potassium (K), boron (B), zinc (Zn), and manganese (Mn), but increased volume by only 16%. These data suggest that deficiencies of P are more likely to limit the growth of young red alder than are deficiencies of other elements. Older plantations (more than 2 years postplanting) were less responsive to fertilization than were younger plantations (less than 2 years postplanting). Growth of young red alder appears limited by P availability when soil Bray-P and foliar P concentrations are less than approximately 12 mg kg−1 and 2 g kg−1, respectively.

Frost Hardiness of Red Alder (Alnus rubra) Provenances in Britain

1987 ◽  
Vol 60 (1) ◽  
pp. 57-67 ◽  
Author(s):  
M. G. R. CANNELL ◽  
M. B. MURRAY ◽  
L. J. SHEPPARD
Keyword(s):  
Frost Hardiness ◽  
Alnus Rubra ◽  
Red Alder
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