Effects of Commercial Thinning on Breeding Bird Populations in Western Hemlock Forests

Artman, Vanessa L.

doi:10.1674/0003-0031(2003)149[0225:eoctob]2.0.co;2

Cited by 15 publications

(17 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A. koa forest ecosystems harbor 30 of Hawaii's remaining 35 endemic bird species,17 of which are endangered (U.S. Fish and Wildlife Service, 1984, 2003. Furthermore, approximately 20% of endangered plants in Hawaii are understory species that occur in forests containing A. koa.…”

Section: Introductionmentioning

confidence: 99%

“…Thinning can accelerate growth and density of tree regeneration, especially shade intolerant species (Ward, 1992;Yanai et al, 1998), increase density and cover of herbaceous and shrub species (Harrington and Edwards, 1999), and enhance habitat conditions for some bird species (Artman, 2003). Fertilization alone or in combination with thinning can change understory species composition, diversity and cover (Thomas et al, 1999) and improve quality of wildlife habitat (VanderSchaaf et al, 2004).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Understory structure in a 23-year-old Acacia koa forest and 2-year growth responses to silvicultural treatments

Scowcroft

Haraguchi

Fujii

2008

Forest Ecology and Management

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Understory structure in a 23-year-old Acacia koa forest and 2-year growth responses to silvicultural treatments

Scowcroft

Haraguchi

Fujii

2008

Forest Ecology and Management

View full text Add to dashboard Cite

“…Consequently, CT may to be perceived as a means to accommodate human use while maintaining ecological integrity (Grumbine, 1994;. Despite the potential benefits of using CT as an ecosystem management tool in the boreal, most research on the subject has focused on wildlife response (Artman, 2002;Coxson et al, 2003). To the author's knowledge, only a few studies have been conducted on CT in naturally regenerated unmanaged black spruce stands (Hillman and Takyi, 1998;Vincent et al, 2009;Weetman et al, 1980) and few projects have evaluated how residual trees respond (Vincent et al, 2009) to the treatment.…”

Section: Discussionmentioning

confidence: 99%

Impact des éclaircies commerciales sur la croissance et la qualité du bois de l'épinette noire (Picea mariana (Mill.) BSP) en forêt boréale /

Vincent¹

2010

View full text Add to dashboard Cite

Ill caractéristiques des arbres résiduels et de leurs compétiteurs. Bien que l'accroissement radial observé suite au traitement soit plus important à la base de l'arbre, cela n'entraine pas de variation significative de la forme ou du défilement de la tige. Aucune variation significative du MOE et de la densité n'a été notée après le traitement. Finalement sous certaines conditions de marché, Péclaircie commerciale peut augmenter la valeur finale du peuplement par rapport à un peuplement non traité. Le "timing" de l'opération pourrait donc influencer la rentabilité des éclaircies commerciales.Mots Clés : Éclaircie commerciale, Épinette noire, qualité du bois, croissance radiale, module d'élasticité, défilement, densité de cerne, rendement, forêt boréale, défilement. IV ABSTRACTFor the last ten years the forests allocated to commercial interests have declined due land conservation, to respect the territorial claims of the First Nations and because the limits of exploitation were attained in certain regions. It is thus necessary to find strategies to increase the volume of wood produced in the remaining forests. The silvicultural practices, such as the thinning, have been effective for several decades in mixed and leafy forests in southern Quebec, but more recently have been used in a less informed way in the northern forests. The forestry companies of the region 02 (Saguenay Lac St-Jean) currently use treatments of commercial thinning in black natural spruce stands. The evaluation of the volume yield in volume remains a priority; on the other hand, the increase in radial growth caused by the thinning treatments can be associated with a decrease in mechanical wood properties. This has to be considered both during the first transformation and when evaluating the wood quality. Coniferous trees respond to increased light by producing some weaker density wood. If it turns out that thinning performed on thousands of hectares of land does not attain the industry standards in terms of mechanical resistance or depreciated quality, the impact on the market value of the wood coming from region 02 would be economically fatal. The main objectives of the thesis were to: 1) Establish radial and volume growth increment at the individual and at the stand scale using dendroecological methods. 2) Determine wood quality variations (modulus of elasticity -MOE -and ring density) before and after thinning. 3) Estimate economical returns in thinned and control stands based on recovery products available after CT and final harvest. The results suggest that commercial thinning leads to an increase of radial growth at the individual level. Response depends upon tree diameter and competition, with the biggest trees exhibiting the lowest response to the treatment.Growth increment in thinned trees appears to occur at the expense of natural radial growth in the upper part of the stem. However, no significant variation in taper or stem shape has been noticed. Moreover, no significant variation in average ring density due to CT was observed afte...

show abstract

“…However, abundance differences were found after forest thinning and burning in other areas (Adams and Morrison 1993, Hagar et al 1996, Artman 2002, Siegel and DeSante 2003. The selection criteria of habitat may vary by spatial scale for foraging birds.…”

Section: Discussionmentioning

confidence: 99%

“…However, studies have shown that all foraging and nesting guilds can have mixed responses to forest management (Saab and Powell 2005). Bark-foraging birds were detected more frequently within thinned than unthinned forests of Washington (Artman 2002) and the Oregon Coast Range (Hagar et al 1996). Cavity-nesting birds were detected more frequently in thinned units than 'control' units in the Sierra Nevada range of California (Siegel and DeSante 2003).…”

Section: Silvicultural Thinningmentioning

confidence: 99%

The response of nuthatches (Sitta spp.) to restorative treatments in ponderosa pine ecosystems of northeastern Oregon.

Rothenbach¹

View full text Add to dashboard Cite

Effects of Commercial Thinning on Breeding Bird Populations in Western Hemlock Forests

Cited by 15 publications

References 15 publications

Understory structure in a 23-year-old Acacia koa forest and 2-year growth responses to silvicultural treatments

Understory structure in a 23-year-old Acacia koa forest and 2-year growth responses to silvicultural treatments

Impact des éclaircies commerciales sur la croissance et la qualité du bois de l'épinette noire (Picea mariana (Mill.) BSP) en forêt boréale /

The response of nuthatches (Sitta spp.) to restorative treatments in ponderosa pine ecosystems of northeastern Oregon.

Contact Info

Product

Resources

About