monitoring

Legacy ID: 
3 421
Publication Title: 

Effects of lek count protocols on greater sage-grouse population trend estimates

FORT Contact: 
Adrian Monroe
Authors: 
Monroe, A. P., D. R. Edmunds, and C. L. Aldridge
Related Staff: 
Adrian Monroe
David Edmunds
Cameron Aldridge
Publication Date: 
2016
Parent Publication Title: 
Journal of Wildlife Management
Publication Type: 
Archive number: 
States: 

Pub Abstract: 

Annual counts of males displaying at lek sites are an important tool for monitoring greater sage-grouse populations (Centrocercus urophasianus), but seasonal and diurnal variation in lek attendance may increase variance and bias of trend analyses. Recommendations for protocols to reduce observation error have called for restricting lek counts to within 30 minutes of sunrise, but this may limit the number of lek counts available for analysis, particularly from years before monitoring was widely standardized. Reducing the temporal window for conducting lek counts also may constrain the ability of agencies to monitor leks efficiently. We used lek count data collected across Wyoming during 1995−2014 to investigate the effect of lek counts conducted between 30 minutes before and 30, 60, or 90 minutes after sunrise on population trend estimates. We also evaluated trends across scales relevant to management, including statewide, within Working Group Areas and Core Areas, and for individual leks. To further evaluate accuracy and precision of trend estimates from lek count protocols, we used simulations based on a lek attendance model and compared simulated and estimated values of annual rate of change in population size (λ) from scenarios of varying numbers of leks, lek count timing, and count frequency (counts/lek/year). We found that restricting analyses to counts conducted within 30 minutes of sunrise generally did not improve precision of population trend estimates, although differences among timings increased as the number of leks and count frequency decreased. Lek attendance declined >30 minutes after sunrise, but simulations indicated that including lek counts conducted up to 90 minutes after sunrise can increase the number of leks monitored compared to trend estimates based on counts conducted within 30 minutes of sunrise. This increase in leks monitored resulted in greater precision of estimates without reducing accuracy. Increasing count frequency also improved precision. These results suggest that the current distribution of count timings available in lek count databases such as that of Wyoming (conducted up to 90 minutes after sunrise) can be used to estimate sage-grouse population trends without reducing precision or accuracy relative to trends from counts conducted within 30 minutes of sunrise. However, only 10% of all Wyoming counts in our sample (1995−2014) were conducted 61−90 minutes after sunrise, and further increasing this percentage may still bias trend estimates because of declining lek attendance. 

Publication Title: 

A plan for the North American Bat Monitoring Program (NABat)

FORT Contact: 
Laura Ellison
Authors: 
Loeb, S.C., T.J. Rodhouse, L.E. Ellison, C.L. Lausen, J.D. Reichard, K.M. Irvine, T.E. Ingersoll, J.T.H. Coleman, W.E. Thogmartin, J.R. Sauer, C.M. Francis, M.L. Bayless, T.R. Stanley, and D.H. Johnson
Related Staff: 
Laura Ellison
Tom Stanley
Publication Date: 
2015
Parent Publication Title: 
U.S. Department of Agriculture Forest Service, Southern Research Station
Publication Type: 
Archive number: 
2015/0030 FORT
Species: 

Pub Abstract: 

The purpose of the North American Bat Monitoring Program (NABat) is to create a continent-wide program to monitor bats at local to rangewide scales that will provide reliable data to promote effective conservation decisionmaking and the long-term viability of bat populations across the continent. This is an international, multiagency program. Four approaches will be used to gather monitoring data to assess changes in bat distributions and abundances: winter hibernaculum counts, maternity colony counts, mobile acoustic surveys along road transects, and acoustic surveys at stationary points. These monitoring approaches are described along with methods for identifying species recorded by acoustic detectors. Other chapters describe the sampling design, the database management system (Bat Population Database), and statistical approaches that can be used to analyze data collected through this program.

Publication Title: 

Detecting annual and seasonal changes in a sagebrush ecosystem with remote sensing derived continuous fields

FORT Contact: 
Cameron Aldridge
Authors: 
Homer, C.G., D.K. Meyer, C.A. Aldridge, and S. Schell
Related Staff: 
Cameron Aldridge
Spencer Schell
Publication Date: 
2013
Parent Publication Title: 
Journal of Applied Remote Sensing
Publication Type: 
Archive number: 
2013/0105 FORT

Pub Abstract: 
Publication Title: 

Trends in amphibian occupancy in the United States

FORT Contact: 
Erin Muths
Authors: 
Adams, M.J., D.A.W. Miller, E. Muths, P.S. Corn, E.H. Campbell Grant, L.L Bailey, G.M. Fellers, R.N. Fisher, W.J. Sadinski, H. Waddle, S.C. Walls
Related Staff: 
Erin Muths
Publication Date: 
2013
Updated Date (text): 
2013-05-29
Parent Publication Title: 
PLoS ONE
Publication Type: 
Archive number: 
2013/0029 FORT

Pub Abstract: 

Though a third of amphibian species worldwide are thought to be imperiled, existing assessments simply categorize extinction risk, providing little information on the rate of population losses. We conducted the first analysis of the rate of change in the probability that amphibians occupy ponds and other comparable habitat features across the United States. We found that overall occupancy by amphibians declined 3.7% annually from 2002 to 2011. Species that are Red-listed by the International Union for Conservation of Nature (IUCN) declined an average of 11.6% annually. All subsets of data examined had a declining trend including species in the IUCN Least Concern category. This analysis suggests that amphibian declines may be more widespread and severe than previously realized.

Publication Title: 

Tracking white-nose syndrome and other threats: a population monitoring program for North American bats

FORT Contact: 
Laura Ellison
Authors: 
Loeb, S., J. Coleman, L. Ellison, T. Rodhouse, and T. Ingersoll
Related Staff: 
Laura Ellison
Publication Date: 
2013
Updated Date (text): 
2013-05-02
Parent Publication Title: 
International Bat Research Conference, Costa Rica, 11-15 August 2013
Publication Type: 
Archive number: 
2013/0059 FORT

Pub Abstract: 
Publication Title: 

Contribution of arctic PRISM to monitoring western hemispheric shorebirds [foreword]

FORT Contact: 
Susan Skagen
Authors: 
Skagen, S.K., P.A. Smith, B.A. Andres, G. Donaldson, and S. Brown
Related Staff: 
Susan Skagen
Publication Date: 
2012
Updated Date (text): 
2013-04-30
Parent Publication Title: 
Arctic shorebirds in North America: A decade of monitoring
Publication Type: 
Archive number: 
2012/0146 FORT

Pub Abstract: 

WHY MONITOR SHOREBIRDS?

Long-term monitoring of populations is of paramount importance to understanding responses of organisms to global environmental change and to evaluating whether conservation practices are yielding intended results through time (Wiens 2009). The population status of many shorebird species, the focus of this volume, remain poorly known. Long-distance migrant shorebirds have proven particularly difficult to monitor, in part because of their highly migratory nature and ranges that extend into highly inaccessible regions. As migrant shorebirds travel the length of the hemisphere, they congregate and disperse in ways that vary among species, locations, and years, presenting serious challenges to designing and implementing monitoring programs...

Publication Title: 

GeoMag WebDisplay, Version 0.1 [Web Application]

FORT Contact: 
Gail Montgomery
Authors: 
McWhirter, E
Related Staff: 
Gail Montgomery
Travis Lawall
Sebastien Nicoud
Publication Date: 
2012
Updated Date (text): 
2013-03-28
Parent Publication Title: 
Publication Type: 
Archive number: 
2012/0145 FORT

Pub Abstract: 

The USGS National Geomagnetism Program is part of Natural Hazards Mission Area and is charged with real time monitoring the Earth's magnetic field from 14 ground based observatories. GeoMag WebDisplay is a cross platform web based monitor for monitoring the observatory's instrument readings on the data collection system at each observatory.

Publication Title: 

An Integrative and Comparative Approach to Detecting and Understanding Bat Fatalities at Wind Turbines, Fowler Ridge Wind Farm, Indiana, 14 July to 3 October: Final Report

FORT Contact: 
Paul Cryan
Authors: 
Cryan, P.C., C. Hein, M. Gorresen, R. Diehl, M. Huso, K. Heist, D. Johnson, F. Bonaccorso, and M. Schirmacher
Related Staff: 
Paul Cryan
Publication Date: 
2014
Updated Date (text): 
2013-04-25
Parent Publication Title: 
Publication Type: 
Archive number: 
2014/0014 FORT
States: 

Pub Abstract: 
Publication Title: 

An Integrative and Comparative Approach to Detecting and Understanding Bat Fatalities at Wind Turbines, Fowler Ridge Wind Farm, Indiana, 14 July to 3 October, a preliminary report

FORT Contact: 
Paul Cryan
Authors: 
Cryan, P.C., C. Hein, M. Huso, R. Diehl, D. Johnson, K. Heist, M. Gorresen, and F. Bonaccorso
Related Staff: 
Paul Cryan
Publication Date: 
2013
Updated Date (text): 
2013-04-23
Parent Publication Title: 
Publication Type: 
Archive number: 
2013/0021 FORT
States: 

Pub Abstract: 
Publication Title: 

Development of a North American Bat Population Monitoring and Modeling Program

FORT Contact: 
Laura Ellison
Authors: 
Loeb, S., J. Coleman, L. Ellison, P. Cryan, T. Rodhouse, T. Ingersoll, and R. Ewing
Related Staff: 
Laura Ellison
Paul Cryan
Publication Date: 
2012
Updated Date (text): 
2012-11-26
Parent Publication Title: 
North American Society for Bat Research (NASBR), 42nd Annual Symposium on Bat Research, San Juan, Puerto Rico, 24-27 October, 2012
Publication Type: 
Archive number: 
2012/0124 FORT

Pub Abstract: 

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