Barry Noon - Profile on Academia.edu (original) (raw)

Papers by Barry Noon

Journal of Wildlife Management, 1993

Plan is a large-scale ecosystem management plan for federal lands in the Pacific Nol_hwest of the... more Plan is a large-scale ecosystem management plan for federal lands in the Pacific Nol_hwest of the United States. An effectiveness monitoring program has been developed to determine the extent to which the goals and objectives of this Plan are being achieved. Priority resources identified tbr ecological monitoring include late-successional and old-growth forests, northern spotted owls, marbled mun'elets, and aquatic and riparian ecosystems. The challenge in developing the monitoring program has been to integrate all of these critical components into one efficient and responsive program. Our meti_od has been to develop a colmnon prospective monitoring approach, conceptual fi'amework, indicator selection strategy, monitoring design, and data assessment and reporting process. This paper discusses how our proposed approach addresses some conmron problems encountered by other monitoring programs. We discuss four major areas of utility to others developing ecological monitoring programs: linkage to decisionmaking, basis for indicator selection, ecological foundation for monitoring, and data quality and accessibility.

Ecological Applications, Dec 1, 2005

Two populations of boreal toads (Bt{/o boreas) experienced drastic declines in abundance in the l... more Two populations of boreal toads (Bt{/o boreas) experienced drastic declines in abundance in the late 1990s. Evidence supported the hypothesis of disease (the chytrid fungus. Batrachochytrium dendrobatidis) as the cause of these declines. but other hypotheses had not been evaluated. We used an II-year capture-recapture data set to evaluate weather and disease as causes of these declines. We developed sets of mathematical models that reflected hypothesized relationships between several weather variables and annual survival rates of adult males in these popUlations. In addition, models that reflected the possibility that the declines were caused by an introduced fungus were developed. All models were fit to the data and were evaluated using a model selection criterion (QAICJ. Our analysis provided strong support for the hypothesis of an introduced fungus and little support for the hypothesis that weather conditions caused the declines. Our results also suggest a strong, negative "marking effect" on survival rates of boreal toads. Modela veraged estimates of survi val rate are presented.

The Condor, 2001

We estimated age-specific survival (), fecundity (b), and the finite rate of population change ()... more We estimated age-specific survival (), fecundity (b), and the finite rate of population change () of California Spotted Owls (Strix occidentalis occidentalis) over a 10-year period (1990)(1991)(1992)(1993)(1994)(1995)(1996)(1997)(1998)(1999). Two hundred nineteen juvenile and 200 subadult or adult owls were banded at 90 sites, with a combined total of 1080 captures. Least-squares mean estimates (Ϯ SE) of fecundity (# female fledglings per territorial female) over all years were 0.065 Ϯ 0.066 for subadults (n ϭ 33) and 0.291 Ϯ 0.065 for adults (n ϭ 381). Estimated annual apparent survival probability was 0.333 Ϯ 0.055 for juveniles and 0.827 Ϯ 0.015 for subadults and adults combined. Using these estimates to construct a four-stage projection matrix, the finite rate of population change, , was 0.910 Ϯ 0.025. This value of suggests an annual rate of decline in the territorial population of 9% per year over the period of study. Elasticity analyses showed to be most sensitive to variation in adult female survival. However, the standard deviation of was dominated by year-to-year variation in fecundity. Conservation guidelines should focus on management activities that increase the value of adult survival while minimizing its temporal variability.

Landscape ecology, terrestrial and freshwater spatial assessments, GIS. Jill Baron (co-

Forty-second breeding bird census: Climax beech-hemlock forest

American Birds, 1979

Ecological Applications, Jun 1, 2006

Reliable prediction of the effects of landscape change on species abundance is critical to land m... more Reliable prediction of the effects of landscape change on species abundance is critical to land managers who must make frequent, rapid decisions with long-term consequences. However, due to inherent temporal and spatial variability in ecological systems, previous attempts to predict species abundance in novel locations and/or time frames have been largely unsuccessful. The Effective Area Model (EAM) uses change in habitat composition and geometry coupled with response of animals to habitat edges to predict change in species abundance at a landscape scale. Our research goals were to validate EAM abundance predictions in new locations and to develop a calibration framework that enables absolute abundance predictions in novel regions or time frames. For model validation, we compared the EAM to a null model excluding edge effects in terms of accurate prediction of species abundance. The EAM outperformed the null model for 83.3% of species (N ¼ 12) for which it was possible to discern a difference when considering 50 validation sites. Likewise, the EAM outperformed the null model when considering subsets of validation sites categorized on the basis of four variables (isolation, presence of water, region, and focal habitat). Additionally, we explored a framework for producing calibrated models to decrease prediction error given inherent temporal and spatial variability in abundance. We calibrated the EAM to new locations using linear regression between observed and predicted abundance with and without additional habitat covariates. We found that model adjustments for unexplained variability in time and space, as well as variability that can be explained by incorporating additional covariates, improved EAM predictions. Calibrated EAM abundance estimates with additional site-level variables explained a significant amount of variability (P , 0.05) in observed abundance for 17 of 20 species, with R 2 values .25% for 12 species, .48% for six species, and .60% for four species when considering all predictive models. The calibration framework described in this paper can be used to predict absolute abundance in sites different from those in which data were collected if the target population of sites to which one would like to statistically infer is sampled in a probabilistic way.

A Search for Stability Gradients in North American Breeding Bird Communities

The Auk, 1985

... BARRY R. NOON,1 DEANNA K. DAWSON,2 AND JOHN P. KELLY1 IDepartment of Wildlife, Humboldt State... more ... BARRY R. NOON,1 DEANNA K. DAWSON,2 AND JOHN P. KELLY1 IDepartment of Wildlife, Humboldt State University, Arcata, California 95521 USA ... of no difference in the means, by habitat, for each stability index and for S and N were conducted using Welch's ANOVA model ...

Integrating landscape structure and scale into natural resource management

Cambridge University Press eBooks, Aug 1, 2002

Forty-fourth breeding bird census. 60. Beech-spruce-hemlock forest

American Birds, 1981

Integrating presence‐only and occupancy data to model habitat use for the northernmost population of jaguars

Ecological Applications, May 30, 2022

Species distribution models (SDMs) have become an essential tool for the management and conservat... more Species distribution models (SDMs) have become an essential tool for the management and conservation of imperiled species. However, many at-risk species are rare and characterized by limited data on their spatial distribution and habitat relationships. This has led to the development of species distribution models that integrate multiple types and sources of data to leverage more information and provide improved predictions of habitat associations. We developed a novel integrated species distribution model to predict habitat suitability for jaguars (Panthera onca) in the border region between northern Mexico and the southwestern United States (U.S.). Our model combined presence-only and occupancy data to identify key environmental correlates, and we used model results to develop a probability of use map. We adopted a logistic regression modeling framework, which we found to be more straightforward and less computationally intensive to fit than Poisson point process-based models. Model results suggested that high terrain ruggedness and the presence of riparian vegetation were most strongly related to the occurrence of jaguars in our study region. Our best model, on average, predicted that there is currently 25,463 km2 of suitable habitat in our study region. The U.S. portion of the study region, which makes up 38.6% of the total area, contained 40.6\% of the total suitable habitat. Even though there have been few detections of jaguars in the southwestern U.S. in recent decades, our results suggest that protection of currently suitable habitats, along with increased conservation efforts, could significantly contribute to the recovery of jaguars in the U.S.

The structure of avian communities along elevational gradients in the northwestern United States

Oecologia, 1976

Stakeholders in Social-Ecological Systems

Conservation Ecology, 2003

Foraging interactions of small Hawaiian forest birds

... Foraging Interactions of Small Hawaiian Forest Birds G. John Ralph and Barry R. Noon USDA For... more ... Foraging Interactions of Small Hawaiian Forest Birds G. John Ralph and Barry R. Noon USDA Forest Service, Redwood Sciences Laboratory, Areata, Calif., USA 95521 Abstract In a search ... fe fe < fe fe < fe < < i 0Й fe O < Z se 8 Citi w fe I z sc о -ч « 00 ■< рм и i* IO dodo S S ...

Scientific standards for conducting viability assessments under the Nathional Forest Management Act: report and recoomendations of the NCRAS Working Group

Andelman, Sandy J.; Beissinger, Steve; Cochrane, Jean Fitts; Gerber, Leah; Gomez-Priego, Paola; G... more Andelman, Sandy J.; Beissinger, Steve; Cochrane, Jean Fitts; Gerber, Leah; Gomez-Priego, Paola; Groves, Craig; Haufler, Jon; Holthausen, Richard; Lee, Danny; Maguire, Lynn; Noon, Barry; Ralls, Katherine; Regan, Helen 2001. Scientific standards for conducting viability ...

The foraging characteristics of Hammond's and Western flycatchers in northwestern California vari... more The foraging characteristics of Hammond's and Western flycatchers in northwestern California varied with different stages of the breeding cycle during the breeding seasons (early April-mid August) in 1984 and 1985. The species' behaviors did not always vary in parallel nor were all foraging behaviors distributed equally during the breeding cycle. For example, the direction of aerial foraging movements for both species did not differ between stages, In contrast, the predominant type of foraging activity (either hover-glean or flycatch) differed by stage of the breeding cycle for Western Flycatchers but not for Hammond's Flycatchers. Both birds differed in their use of foraging substrates and plant species among breeding stages. Western Flycatchers did not differ in position (height of foraging bird or distance to the canopy edge) among stages of the breeding cycle, but Hammond's Flycatchers did. Both species foraged in trees with different structural characteristics (diameter-at-breast height, tree height, and bole height) during different stages of the breeding cycle. For both species, differences in foraging patterns within specific stages of the breeding cycle were apparent when compared with data pooled across the breeding stages. Failure to partition the data by stage of the breeding cycle may mask significant sources of variation and preclude important insights into a species' breeding biology.