Treesearch - scientific articles written or published by the U.S. Forest Service

Show/Hide Search Form

Keywords (All fields) or Title:

Last Name of Author:

Date Range:

FS Series:

Subscribe to R&D Publications recently added to Treesearch - RSS feed More RSS options

Displaying 1 - 20 of 27

Pages

Records Per Page:

Sort By:

Divergence in strategies for coping with winter embolism among co-occurring temperate tree species: the role of positive xylem pressure, wood type and tree stature

1. In temperate ecosystems, freeze-thaw events are an important environmental stress that can induce severe xylem embolism (i.e. clogging of conduits by air bubbles) in overwintering organs of trees. However, no comparative studies of different adaptive strategies among sympatric tree species for coping with winter embolism have examined the potential role of the...

https://www.fs.usda.gov/treesearch/search?keywords=%22Generations%22&%3Bf%5B0%5D=author_facet%3A%22Absher%2C%20Jim%22&f%5B0%5D=author_facet%3A%22Bradford%2C%20John%20B.%22&f%5B1%5D=author_facet%3A%22Driscoll%2C%20Katelyn%22&f%5B2%5D=author_facet%3A%22Blahna%2C%20Dale%22&f%5B3%5D=author_facet%3A%22Fujioka%2C%20Francis%22&f%5B4%5D=author_facet%3A%22De%20Steven%2C%20Diane%22&f%5B5%5D=author_facet%3A%22Meinzer%2C%20Frederick%22

Author(s):

Cun-Yang Niu; Frederick C. Meinzer; Guang-You Hao

Year:

2017

Keywords:

Functional groups, hydraulic conductivity, root pressure, stem pressure, temperate forest, winter embolism.

Source:

Functional Ecology. 31(8): 1550-1560.

NCEP-ECPC monthly to seasonal US fire danger forecasts

Five National Fire Danger Rating System indices (including the Ignition Component, Energy Release Component, Burning Index, Spread Component, and the Keetch?Byram Drought Index) and the Fosberg Fire Weather Index are used to characterise US fire danger. These fire danger indices and input meteorological variables, including temperature, relative humidity, precipitation...

Author(s):

J. Roads; P. Tripp; H. Juang; J. Wang; F. Fujioka; S. Chen

Year:

2010

Keywords:

climate models, fire climatology

Source:

International Journal of Wildland Fire 19:399-414

Nutrient resorption and patterns of litter production and decomposition in a Neotropical savanna.

1. Deposition of nutrients owing to anthropogenic activities has the potential to change nutrient availability in nutrient-limited ecosystems with consequences for plant and ecosystem processes.

2. Species-specific and ecosystem responses to the addition of nutrients were studied in a field experiment conducted in a Savanna (Cerrado sensu stricto)...

Author(s):

A.R. Kozovits; M.M.C. Bustamante; C.R. Garofalo; S. Bucci; A.C. Franco; G. Goldstein; F. Meinzer

Year:

2007

Keywords:

Cerrado, fertilization, nitrogen and phosphorus resorption, N:P ratio

Source:

Functional Ecology. 21: 1034-1043

Linkages to Public Land Framework: toward embedding humans in ecosystem analyses by using “inside-out social assessment.”

This article presents the " Linkages to Public Land" (LPL) Framework, a general but comprehensive data-gathering and analysis approach aimed at informing citizen and agency decision making about the social environment of public land. This social assessment and planning approach identifies and categorizes various types of linkages that people have to public...

Author(s):

Joanna Endter-Wada; Dale J. Blahna

Year:

2011

Keywords:

common property, coupled natural-human systems, forest policy, human dimensions of ecosystem management, public involvement, public land access, social impact assessment

Source:

Ecological Applications. 21(8): 3254-3271

Effect of climate fluctuation on long-term vegetation dynamics in Carolina bay wetlands

Carolina bays and similar depression wetlands of the U. S. Southeastern Coastal Plain have hydrologic regimes that are driven primarily by rainfall. Therefore, climate fluctuations such as drought cycles have the potential to shape long-term vegetation dynamics. Models suggest two potential long-term responses to hydrologic fluctuations, either cyclic change...

Author(s):

Chrissa Stroh; Diane De Steven; Glenn Guntenspergen

Year:

2008

Keywords:

depressional wetlands, drought cycles, hydrologic regime, succession

Source:

Wetlands 28:17-27

Fine fuel moisture measured and estimated in dead Andropogon virginicus in Hawaii

Fuel moisture estimates generated by the National Fire-Danger Rating System procedure were compared with actual fuel moisture measurements determined from laboratory analysis. Meteorological data required for the NFDRS procedure were collected at two heights to assess the effect of temperature and humidity lapse rates. Standard measurements gave the best results, but...

Author(s):

Francis M. Fujioka

Year:

1976

Keywords:

fuel moisture estimation, National Fire Danger Rating System, hygrometrix, xeric hygrometers, sampling

Source:

Res. Note PSW-RN-317. Berkeley, CA: U.S. Department of Agriculture, Forest Service, Pacific Southwest Forest and Range Experiment Station. 4 p

Recreational use in dispersed public lands measured using social media data and on-site counts

Outdoor recreation is one of many important benefits provided by public lands. Data on recreational use are critical for informing management of recreation resources, however, managers often lack actionable information on visitor use for large protected areas that lack controlled access points. The purpose of this study is to explore the potential for social media data...

Author(s):

David M. Fisher; Spencer A. Wood; Eric M. White; Dale J. Blahna; Sarah Lange; Alex Weinberg; Michael Tomco; Emilia Lia

Year:

2018

Keywords:

Recreation, visitation rates, public lands, social media, conservation areas, national forests, geotagged photographs.

Source:

Journal of Environmental Management. 222: 465-474.

A comparison of thinning methods in red pine: consequences for stand-level growth and tree diameter

Long-term replicated experiments that contrast thinning method (dominant thinning, thinning from below) while controlling stocking level are rare. Stand growth and tree size responses to thinning method can be useful for making decisions to achieve desired objectives, whether these are timber or wildlife habitat related. We examined data from two long-term (>50 year...

Author(s):

John B. Bradford; Brian J. Palik

Year:

2009

Keywords:

Source:

Canadian Journal of Forest Research. 39: 489-496.

Old forests and endangered woodpeckers: old-growth in the Southern Coastal Plain

Southern old-growth forests are small and rare, but critical in their support of biodiversity. While the remnant old-growth forests contain diversity that is significant regionally and globally, they most likely represent only a portion of the variety that old forests once sustained. High within-habitat diversity and rarity in the landscape magnify the conservation...

Author(s):

Robert Mitchell; Todd Engstrom; Rebecca Sharitz; Diane De Steven; Kevin Hiers; Robert Cooper; Katherine Kirkman

Year:

2009

Keywords:

bottomland hardwood forest, cypress-tupelo forest, Ivory-billed Woodpecker (Campephilus principalis), longleaf pine forest, old-growth forest, Red-cockaded Woodpecker (Picoides borealis)

Source:

Natural Areas Journal 29:301-310.

Fire danger and fire behavior modeling systems in Australia, Europe, and North America

Wildland fire occurrence and behavior are complex phenomena involving essentially fuel (vegetation), topography, and weather. Fire managers around the world use a variety of systems to track and predict fire danger and fire behavior, at spatial scales that span from local to global extents, and temporal scales ranging from minutes to seasons. The fire management...

Author(s):

Francis M. Fujioka; A. Malcolm Gill; Domingos X. Viegas; B. Mike Wotton

Year:

2009

Keywords:

Source:

In: Bytnerowicz, Andrzej; Arbaugh, Michael; Andersen, Christian; Riebau, Allen. 2009. Wildland Fires and Air Pollution. Developments in Environmental Science 8. Amsterdam, The Netherlands: Elsevier. pp. 471-498

Age-related patterns of forest complexity and carbon storage in pine and aspen-birch ecosystems of northern Minnesota, USA

Forest managers are seeking strategies to create stands that can adapt to new climatic conditions and simultaneously help mitigate increases in atmospheric CO₂. Adaptation strategies often focus on enhancing resilience by maximizing forest complexity in terms of species composition and size structure, while mitigation involves sustaining carbon...

Author(s):

John B. Bradford; Douglas N. Kastendick

Year:

2010

Keywords:

Source:

Canadian Journal of Forest Research. 40: 401-409.

Forecast skill of synoptic conditions associated with Santa Ana winds in Southern California

Santa Ana winds (SAW) are synoptically driven mesoscale winds observed in Southern California usually during late fall and winter. Because of the complex topography of the region, SAW episodes can sometimes be extremely intense and pose significant environmental hazards, especially during wildfire incidents. A simple set of criteria was used to identify synoptic-scale...

Author(s):

Charles Jones; Francis Fujioka; Leila M.V. Carvalho

Year:

2010

Keywords:

wildfires, wind, forecasting, climate models, synoptic-scale processes

Source:

Monthly Weather Review, 138:2253-2280

Forest management for mitigation and adaptation: insights from long-term silvicultural experiments

Developing management strategies for addressing global climate change has become an increasingly important issue influencing forest management around the globe. Currently, management approaches are being proposed that intend to (1) mitigate climate change by enhancing forest carbon stores and (2) foster adaptation by maintaining compositionally and structurally complex...

Author(s):

Anthony W. D'Amato; John B. Bradford; Shawn Fraver; Brian J. Palik

Year:

2011

Keywords:

carbon storage, climate change adaptation, forest thinning, selection methods, northern hardwoods, Pinus resinosa

Source:

Forest Ecology and Management. 262: 803-816.

Diverse characteristics of wetlands restored under the Wetlands Reserve Program in the Southeastern United States

The Wetlands Reserve Program (WRP) restores converted or degraded wetlands on private working lands; however, the nature and outcomes of such efforts are undocumented in the Southeastern U.S. Identification of wetland types is needed to assess the program's conservation benefits, because ecological functions differ with hydrogeomorphic (HGM) type. We reviewed...

Author(s):

Diane De Steven; Joel M. Gramling

Year:

2012

Keywords:

Coastal Plain region, USA, Conservation Effects Assessment Project (CEAP), Ecosystem services, HGM, Wetland restoration, Wetlands Reserve Program

Source:

Wetlands 32:593-604

Quantifying understorey vegetation in the US Lake States: a proposed framework to inform regional forest carbon stocks

The contribution of understorey vegetation (UVEG) to forest ecosystem biomass and carbon (C) across diverse forest types has, to date, eluded quantification at regional and national scales. Efforts to quantify UVEG C have been limited to field-intensive studies or broad-scalemodelling approaches lacking fieldmeasurements. Although large-scale inventories of UVEG C are...

Author(s):

Matthew B. Russell; Anthony W. D'Amato; Bethany K. Schulz; Christopher W. Woodall; Grant M. Domke; John B. Bradford

Year:

2014

Keywords:

Source:

Forestry

Multiple factors influence the vegetation composition of Southeast U.S. wetlands restored in the Wetlands Reserve Program

Degradation of wetlands on agricultural lands contributes to the loss of local or regional vegetation diversity. The U.S. Department of Agriculture?s Wetlands Reserve Program (WRP) funds the restoration of degraded wetlands on private ?working lands?, but these WRP projects have not been studied in the Southeast United States. Wetland hydrogeomorphic type influences...

Author(s):

Diane De Steven; Joel M. Gramling

Year:

2013

Keywords:

Conservation Effects Assessment Project (CEAP), hydrogeomorphic (HGM) classification, vegetation diversity, wetland restoration, Wetlands Reserve Program (WRP)

Source:

Journal of the Torrey Botanical Society 140(4):453–464

A comparison of hydraulic architecture in three similarly sized woody species differing in their maximum potential height

The physiological mechanisms underlying the short maximum height of shrubs are not understood. One possible explanation is that differences in the hydraulic architecture of shrubs compared with co-occurring taller trees prevent the shrubs from growing taller. To explore this hypothesis, we examined various hydraulic parameters, including vessel lumen diameter,...

Author(s):

Katherine A. McCulloh; Daniel M. Johnson; Joshua Petitmermet; Brandon McNellis; Frederick C. Meinzer; Barbara Lachenbruch; Nathan Phillips

Year:

2015

Keywords:

Height, hydraulic architecture, hydraulic conductivity, vulnerability to embolism.

Source:

Tree Physiology. 35(7): 723-731.

What people value: an ecosystem services approach to managing public lands

Since 1960, the Forest Service has been guided by the multiple-use concept, which recognizes five major uses for public lands?timber, water, range, recreation, and fish and wildlife habitat?and mandates that all five should be equally considered in management plans. In recent decades, however, it has become evident that people also value many other benefits offered by...

Author(s):

Marie Oliver; Robert Deal; Nikola Smith; Dale Blahna; Jeff Kline

Year:

2016

Keywords:

Source:

Science Findings 188. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 5 p.

Tree age, disturbance history, and carbon stocks and fluxes in subalpine Rocky Mountain forests

Forest carbon stocks and fluxes vary with forest age, and relationships with forest age are often used to estimate fluxes for regional or national carbon inventories. Two methods are commonly used to estimate forest age: observed tree age or time since a known disturbance. To clarify the relationships between tree age, time since disturbance and forest carbon storage...

Author(s):

J.B. Bradford; R.A. Birdsey; L.A. Joyce; M.G. Ryan

Year:

2008

Keywords:

carbon dynamics, dis