Forested plant associations of the Colville National Forest.

Williams, Clinton K.; Kelley, B.F.; Smith, Bradley G.; Lillybridge, Terry R.

doi:10.2737/pnw-gtr-360

Cited by 39 publications

(47 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Forest composition varies with both elevation and position on a west-east (maritime-continental) gradient across the state. At a finer scale, orographic effects on species composition are apparent on the leeward versus windward sides of both the Olympic Mountains and the Cascade Range, where complex topography produces steep gradients in the biophysical environment across relatively short distances (Williams and Lillybridge, 1983;Franklin and Dyrness, 1988;Henderson et al, 1989Henderson et al, , 1992Williams et al 1990;Lillybridge et al 1995).…”

Section: Introductionmentioning

confidence: 99%

Forest ecosystems, disturbance, and climatic change in Washington State, USA

et al. 2010

View full text Add to dashboard Cite

C limatic change is likely to affect Pacific Northwest (PNW) forests in several important ways. In this paper, we address the role of climate in four forest ecosystem processes and project the effects of future climatic change on these processes. First, we analyze how climate affects Douglas-fir growth across the region to understand potential changes in future growth. In areas where Douglas-fir is not water-limited, future growth will continue to vary with interannual climate variability, but in places where Douglas-fir is water-limited, growth is likely to decline due to projected increase in summer potential evapotranspiration. Second, we use existing analyses of climatic controls on future potential tree species ranges to highlight areas where species turnover may be greatest. By the mid 21 st century, some areas of the interior Columbia Basin and eastern Cascades are likely to have climates poorly suited to pine species that are susceptible to mountain pine beetle, and if these pines are climatically stressed, they may be more vulnerable to pine beetle attack. Climatic suitability for Douglas-fir is also likely to change, with substantial decreases in climatically suitable area in the Puget Trough and the Okanogan Highlands. Third, using regression approaches, we examine the relationships between climate and the area burned by fire in the PNW and in eight Washington ecosystems and project future area burned in response to changing climate. Area burned is significantly related to both temperature and precipitation in summer, but more physiologically relevant variables, such as water balance deficit, perform as well or better in models. Regional area burned is likely to double or even triple by the end of the 2040s, although Washington ecosystems have different sensitivities to climate and thus different responses to climatic change. Fourth, we evaluate the influence of climatic change on mountain pine beetle (MPB) outbreaks by quantifying both host-tree vulnerability and pine beetle adaptive seasonality. Host-tree vulnerability is closely related to vapor pressure deficit (VPD), and future projections support the hypothesis that summer VPD will increase over a significant portion of the range of host tree species. Due to the increased host 255vulnerability, MPB populations are expected to become more viable at higher elevations leading to increased incidence of MPB outbreaks. The increased rates of disturbance by fire and mountain pine beetle are likely to be more significant agents of changes in forest structure and composition in the 21st century than species turnover or declines in productivity. This suggests that understanding future disturbance regimes is critical for successful adaptation to climate change.

show abstract

Section: Introductionmentioning

confidence: 99%

Forest ecosystems, disturbance, and climatic change in Washington State, USA

et al. 2010

View full text Add to dashboard Cite

show abstract

“…Similar POTR/CARU types have been described in the Intermountain Region (Mueggler 1988, Mueggler andCampbell 1982) and also for northcentral Washington (Williams and Lillybridge 1983). The POTR/CARU Association has been observed on the Wenatchee N.F.…”

Section: Comparisonsmentioning

confidence: 56%

“…and there are few plots representative of it. It was not described in the field version of this guide (Williams et al 1990) but subsequent field observations and additional data analysis indicates that it deserves mentioning as an incidental type. The type is more common on the Okanogan N.F.…”

Section: Distribution and Environmentmentioning

confidence: 99%

Distribution and Environment

Silva¹

2013

Phosphorus

View full text Add to dashboard Cite

“…Grand fir does best throughout the region where a deep layer of volcanic ash occurs [2,3]. There are similar occurrences of grand fir throughout western Montana habitat types and northeastern Washington and Oregon plant associations [4,5]. Grand fir is shade tolerant and often takes a subordinate position in the stand in mixture with other inland species.…”

Section: Introductionmentioning

confidence: 99%

Grand Fir Nutrient Management in the Inland Northwestern USA

Parent¹,

Coleman

2016

Forests

View full text Add to dashboard Cite

Grand fir (Abies grandis (Douglas ex D. Don) Lindley) is widely distributed in the moist forests of the Inland Northwest. It has high potential productivity, its growth being nearly equal to western white pine, the most productive species in the region. There are large standing volumes of grand fir in the region. Nutritionally, the species has higher foliage cation concentrations than associated conifers, especially potassium (K) and calcium (Ca). In contrast, it has lower nitrogen (N) foliage concentrations, which creates favorable nutrient balance on N-limited sites. Despite concentration differences, grand fir stores proportionally more nutrients per tree than associated species because of greater crown biomass. Although few fertilization trials have examined grand fir specifically, its response is inferred from its occurrence in many monitored mixed conifer stands. Fertilization trials including grand fir either as a major or minor component show that it has a strong diameter and height growth response ranging from 15% to 50% depending in part on site moisture availability and soil geology. Grand fir tends to have a longer response duration than other inland conifers. When executed concurrently with thinning, fertilization often increases the total response. Late rotation application of N provides solid investment returns in carefully selected stands. Although there are still challenges with the post-fertilization effects on tree mortality, grand fir will continue to be an important species with good economic values and beneficial responses to fertilization and nutrient management.

show abstract

Forested plant associations of the Colville National Forest.

Cited by 39 publications

References 0 publications

Forest ecosystems, disturbance, and climatic change in Washington State, USA

Forest ecosystems, disturbance, and climatic change in Washington State, USA

Distribution and Environment

Grand Fir Nutrient Management in the Inland Northwestern USA

Contact Info

Product

Resources

About