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Airborne laser scanner-assisted estimation of aboveground biomass change in a temperate oak-pine forest

We estimated aboveground tree biomass and change in aboveground tree biomass using repeated airborne laser scanner (ALS) acquisitions and temporally coincident ground observations of forest biomass, for a relatively undisturbed period (2004-2007; ∇_07-04), a contrasting period of disturbance (2007-2009; ∇_09-07

https://www.fs.usda.gov/treesearch/search?keywords=%22estimation%22&%3Bamp%3Bf%5B0%5D=author_facet%3A%22Moser%2C%20John%22&%3Bf%5B0%5D=author_facet%3A%22Anderson%2C%20Nathaniel%20%28Nate%29%22&f%5B0%5D=author_facet%3A%22Edwards%2C%20Pamela%22&f%5B1%5D=author_facet%3A%22Pontius%2C%20Jennifer%22&f%5B2%5D=author_facet%3A%22Wolfe%2C%20Jared%22&f%5B3%5D=author_facet%3A%22Marcano-Vega%2C%20Humfredo%22&f%5B4%5D=author_facet%3A%22Clark%2C%20Ken%22&f%5B5%5D=author_facet%3A%22Kayler%2C%20Zachary%22

Author(s):

Nicholas S. Skowronski; Kenneth L. Clark; Michael Gallagher; Richard A. Birdsey; John L. Hom

Year:

2014

Keywords:

Airborne laser scanning, ALS, Disturbance, Multi-temporal, Biomass change estimation, New Jersey Pinelands

Source:

Remote Sensing of Environment. 151: 166-174.

Improved estimates of net primary productivity from MODIS satellite data at regional and local scales

We compared estimates of net primary production (NPP) from the MODIS satellite with estimates from a forest ecosystem process model (PnET-CN) and forest inventory and analysis (FIA) data for forest types of the mid-Atlantic region of the United States. The regional means were similar for the three methods and for the dominant oak? hickory forests in the region. However...

Author(s):

Yude Pan; Richard Birdsey; John Hom; Kevin McCullough; Kenneth Clark

Year:

2006

Keywords:

ecosystem modeling, forest inventory data, MODIS, net primary production (NPP), soil water index

Source:

Ecological Applications.

Sampling considerations for establishment of baseline loadings from forested watersheds for TMDL application

Five methods for estimating maximum daily and annual nitrate (NO3) and suspended sediment loads using periodic sampling of varying intensities were compared to actual loads calculated from intensive stormflow and baseflow sampling from small, forested watersheds in north central West Virginia to determine if the less intensive sampling methods were accurate and could...

Author(s):

Pamela J. Edwards; Karl W.J. Williard; James N. Kochenderfer

Year:

2004

Keywords:

nitrate, sampling frequency, stormflow, concentrations, suspended sediment, total maximum daily loads

Source:

Environmental Monitoring and Assessment. 98: 201-223.

Albedo estimates for land surface models and support for a new paradigm based on foliage nitrogen concentration

Vegetation albedo is a critical component of the Earth?s climate system, yet efforts to evaluate and improve albedo parameterizations in climate models have...

Author(s):

D.Y. Hollinger; S.V. Ollinger; A.D. Richardson; T.P. Meyers; D.B. Dails; M.E. Martin; N.A. Scott; T.J. Arkebauer; D.D. Baldocchi; K.L. Clark; P.S. Curtis; K.J. Davis; A.R. Desai; D. Dragoni; M.L. Goulden; L. Gu; G.G. Katul; S.G. Pallardy; K.T. Paw U; H.P. Schmid; P.C. Stoy; A.E. Suyker; S.B. Verma

Year:

2010

Keywords:

albedo, nitrogen, vegetation

Source:

Global Change Biology. 16: 696-710.

A novel approach to understanding bird communities using informed diversity estimates at local and regional scales in northern California and southern Oregon

Assessment and preservation of biodiversity has been a central theme of conservation biology since the discipline's inception. However, when diversity estimates are based purely on measures of presence?absence, or even abundance, they do not directly assess in what way focal habitats support the life history needs of individual species making up biological...

Author(s):

Jared D. Wolfe; John D. Alexander; Jaime L. Stephens; C. John Ralph

Year:

2019

Keywords:

assemblage, community, community similarity, DCA, informed indices, species richness

Source:

Ecology and Evolution. 9(8): 4431-4442

Predictions of Tropical Forest Biomass and Biomass Growth Based on Stand Height or Canopy Area Are Improved by Landsat-Scale Phenology across Puerto Rico and the U.S. Virgin Islands

Remotely-sensed estimates of forest biomass are usually based on various measurements of canopy height, area, volume or texture, as derived from LiDAR, radar or fine spatial resolution imagery. These measurements are then calibrated to estimates of stand biomass that are primarily based on tree stem diameters. Although humid tropical...

Author(s):

David Gwenzi; Eileen Helmer; Xiaolin Zhu; Michael Lefsky; Humfredo Marcano-Vega

Year:

2017

Keywords:

Landsat, phenology, forest deciduousness, forest biomass, forest biomass growth, forest carbon stocks

Source:

Remote Sensing 9(2): 123-.

Greater mass increases annual survival of Prothonotary Warblers wintering in northeastern Costa Rica

Estimates of survival of nearctic-neotropic migrants have broadened our understanding of life-history variation across taxa and latitudes. Despite the importance of assessing migrants' survival through all phases of their life-cycle, data from their tropical winter ranges are few. In this study we used 14 years of data on captured birds to quantify the influence...

Author(s):

Jared D. Wolfe; Matthew D. Johnson; C. John Ralph

Year:

2013

Keywords:

Costa Rica, migrant, survival, population growth, mass, over-winter

Source:

The Condor. 115(1):163-167

Three-dimensional canopy fuel loading predicted using upward and downward sensing LiDAR systems

We calibrated upward sensing profiling and downward sensing scanning LiDAR systems to estimates of canopy fuel loading developed from field plots and allometric equations, and then used the LiDAR datasets to predict canopy bulk density (CBD) and crown fuel weight (CFW) in wildfire prone stands in the New Jersey Pinelands. LiDAR-derived height profiles were also...

Author(s):

Nicholas S. Skowronski; Kenneth L. Clark; Matthew Duveneck; John Hom

Year:

2011

Keywords:

canopy bulk density, fuel loading, wildfire, LiDAR, fuel maps, New Jersey Pinelands

Source:

Remote Sensing of Environment. 115: 703-714.

Landscapes can be viewed as spatially heterogeneous areas encompassing terrestrial and aquatic domains. To date, most landscape carbon (C) fluxes have been estimated by accounting for terrestrial ecosystems, while aquatic ecosystems have been largely neglected. However, a robust assessment of C fluxes on the landscape scale requires the estimation of fluxes within and...

Author(s):

Katrin Premke; Katrin Attermeyer; Jurgen Augustin; Alvaro Cabezas; Peter Casper; Detlef Deumlich; Jorg Gelbrecht; Horst H. Gerke; Arthur Gessler; Hans-Peter Grossart; Sabine Hilt; Michael Hupfer; Thomas Kalettka; Zachary Kayler; Gunnar Lischeid; Michael Sommer; Dominik Zak

Year:

2016

Keywords:

Source:

Wiley Interdisciplinary Reviews: Water. 3(4): 601-617.

Assessing the interplay between canopy energy balance and photosynthesis with cellulose δ¹⁸O: large-scale patterns and independent ground-truthing

There are few whole-canopy or ecosystem scale assessments of the interplay between canopy temperature and photosynthesis across both spatial and temporal scales. The stable oxygen isotope ratio (?¹⁸O) of plant cellulose can be used to resolve a photosynthesis-weighted estimate of canopy temperature, but the method requires independent...

Author(s):

Brent R. Helliker; Xin Song; Michael L. Goulden; Kenneth Clark; Paul Bolstad; J. William Munger; Jiquan Chen; Asko Noormets; David Hollinger; Steve Wof