Changes in the number and distribution of Greater Sandhill Cranes in the Eastern Population

2015 ◽  
Vol 86 (4) ◽  
pp. 317-325 ◽  
Author(s):  
Anne E. Lacy ◽  
Jeb A. Barzen ◽  
Dorn M. Moore ◽  
Kristin E. Norris
Keyword(s):  
Eastern Population ◽  
Sandhill Cranes

scholarly journals Fall Age-Ratio Survey Design for Eastern Population Greater Sandhill Cranes

2019 ◽  
Vol 10 (2) ◽  
pp. 631-640
Author(s):  
David L. Fronczak ◽  
Elizabeth A. Rigby
Keyword(s):  
Migratory Birds ◽  
Survey Design ◽  
Adult Population ◽  
Recruitment Rate ◽  
River Valley ◽  
Spatial And Temporal Variation ◽  
Flock Size ◽  
Eastern Population ◽  
South Central ◽  
Sandhill Cranes

Abstract For migratory birds, wildlife managers can use the recruitment rate of young into an adult population to model population dynamics, manage harvest, or evaluate habitat. Few recruitment estimates exist for Eastern Population greater sandhill cranes Antigone canadensis tabida, and estimates are outdated and local in scale. Wildlife managers can use age ratios as an index to recruitment, and surveying at fall staging areas is efficient and cost effective. We created a systematic survey design for surveying eastern population crane age ratios in the Kankakee River valley (2013–2015) in northwestern Indiana and the south-central counties of Michigan (2014–2015). Using logistic regression, we investigated factors that may cause spatial and temporal variation in age ratios, including flock size, timing within season, state, year, random vs. incidental survey routes, and observer. We stratified our selection of survey routes using a core area of high crane abundance, but do not recommend stratifying due to the added complexity and low utility. Observers determined the age of 53,371 cranes and found that the proportion of juveniles in Eastern Population crane flocks (π = 0.113, 95% CI: 0.105 – 0.122) was similar to previous estimates for the population. Proportion of juveniles was greater for south-central Michigan than for the Kankakee River valley, decreased with flock size, increased with lateness in the season, and varied among observers. Our design accounted for both ecological sources of variation in age ratios as well as nuisance variation. We recommend that future surveys use our design as part of a monitoring plan for Eastern Population cranes to support harvest management of the population and ensure that future survey results are comparable across years.

Annual Survival Rate Estimate of Satellite Transmitter–Marked Eastern Population Greater Sandhill Cranes

2015 ◽  
Vol 6 (2) ◽  
pp. 464-471 ◽  
Author(s):  
David L. Fronczak ◽  
David E. Andersen ◽  
Everett E. Hanna ◽  
Thomas R. Cooper
Keyword(s):  
Survival Rate ◽  
Population Size ◽  
Management Strategies ◽  
Early Summer ◽  
Rate Estimate ◽  
Satellite Transmitter ◽  
Eastern Population ◽  
Annual Survival ◽  
Sandhill Crane ◽  
Sandhill Cranes

Abstract Several surveys have documented the increasing population size and geographic distribution of Eastern Population greater sandhill cranes Grus canadensis tabida since the 1960s. Sport hunting of this population of sandhill cranes started in 2012 following the provisions of the Eastern Population Sandhill Crane Management Plan. However, there are currently no published estimates of Eastern Population sandhill crane survival rate that can be used to inform harvest management. As part of two studies of Eastern Population sandhill crane migration, we deployed solar-powered global positioning system platform transmitting terminals on Eastern Population sandhill cranes (n  =  42) at key concentration areas from 2009 to 2012. We estimated an annual survival rate for Eastern Population sandhill cranes from data resulting from monitoring these cranes by using the known-fates model in the MARK program. Estimated annual survival rate for adult Eastern Population sandhill cranes was 0.950 (95% confidence interval  =  0.885–0.979) during December 2009–August 2014. All fatalities (n  =  5) occurred after spring migration in late spring and early summer. We were unable to determine cause of death for crane fatalities in our study. Our survival rate estimate will be useful when combined with other population parameters such as the population index derived from the U.S. Fish and Wildlife Service fall survey, harvest, and recruitment rates to assess the effects of harvest on population size and trend and evaluate the effectiveness of management strategies.

scholarly journals Distribution and migration chronology of Eastern population sandhill cranes

2017 ◽  
Vol 81 (6) ◽  
pp. 1021-1032 ◽  
Author(s):  
David L. Fronczak ◽  
David E. Andersen ◽  
Everett E. Hanna ◽  
Thomas R. Cooper
Keyword(s):  
Eastern Population ◽  
Sandhill Cranes ◽  
Migration Chronology ◽  
And Migration

scholarly journals REPRODUCTIBILITY OF A METABOLITE RISK SCORE TO PREDICT CORONARY HEART DISEASE IN A MIDDLE EASTERN POPULATION

2021 ◽  
Vol 77 (18) ◽  
pp. 107
Author(s):  
Ayman El-Menyar ◽  
Ehsan Ullah ◽  
Khalid Kunji ◽  
Reem Elsousy ◽  
Amna Al-Nesf ◽  
...  
Keyword(s):  
Coronary Heart Disease ◽  
Heart Disease ◽  
Risk Score ◽  
Middle Eastern ◽  
Eastern Population ◽  
Middle Eastern Population

Feeding Ecology of Sandhill Cranes during Spring Migration in Nebraska

1986 ◽  
Vol 50 (1) ◽  
pp. 71 ◽  
Author(s):  
Kenneth J. Reinecke ◽  
Gary L. Krapu
Keyword(s):  
Feeding Ecology ◽  
Spring Migration ◽  
Sandhill Cranes

Capture of Sandhill Cranes Using Alpha-chloralose: A 10-Year Follow-up

2014 ◽  
Vol 50 (1) ◽  
pp. 143-145 ◽  
Author(s):  
Barry K. Hartup ◽  
Lauren Schneider ◽  
J. Michael Engels ◽  
Matthew A. Hayes ◽  
Jeb A. Barzen
Keyword(s):  
Sandhill Cranes ◽  
Alpha Chloralose

Age of Sexual Maturity of Sandhill Cranes from Mid-Continental North America

1989 ◽  
Vol 53 (1) ◽  
pp. 43 ◽  
Author(s):  
Thomas C. Tacha ◽  
Donald E. Haley ◽  
Paul A. Vohs
Keyword(s):  
North America ◽  
Sexual Maturity ◽  
Sandhill Cranes

scholarly journals Validation of the Framingham hypertension risk score in a middle eastern population: Tehran lipid and glucose study (TLGS)

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Fatemeh Koohi ◽  
Ewout W. Steyerberg ◽  
Leila Cheraghi ◽  
Alireza Abdshah ◽  
Fereidoun Azizi ◽  
...  
Keyword(s):  
Simple Model ◽  
Risk Score ◽  
Screening Tool ◽  
Middle Eastern ◽  
Predictive Ability ◽  
Eastern Population ◽  
Hypertension Risk ◽  
Graphical Comparison ◽  
Middle Eastern Population

Abstract Background The Framingham hypertension risk score is a well-known and simple model for predicting hypertension in adults. In the current study, we aimed to assess the predictive ability of this model in a Middle Eastern population. Methods We studied 5423 participants, aged 20–69 years, without hypertension, who participated in two consecutive examination cycles of the Tehran Lipid and Glucose Study (TLGS). We assessed discrimination based on Harrell’s concordance statistic (c-index) and calibration (graphical comparison of predicted vs. observed). We evaluated the original, recalibrated (for intercept and slope), and revised (for beta coefficients) models. Results Over the 3-year follow-up period, 319 participants developed hypertension. The Framingham hypertension risk score performed well in discriminating between individuals who developed hypertension and those who did not (c-index = 0.81, 95% CI: 0.79–0.83). Initially, there was a systematic underestimation of the original risk score (events predicted), which was readily corrected by a simple model revision. Conclusions The revised Framingham hypertension risk score can be used as a screening tool in public health and clinical practice to facilitate the targeting of preventive interventions in high-risk Middle Eastern people.

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