Survival, site fidelity, and the population dynamics of Piping Plovers in Saskatchewan

2011 ◽  
Vol 82 (4) ◽  
pp. 379-394 ◽  
Author(s):  
Jonathan B. Cohen ◽  
Cheri Gratto-Trevor
Keyword(s):  
Population Dynamics ◽  
Site Fidelity ◽  
Piping Plovers

scholarly journals Population dynamics and site fidelity of the cave bat,Myotis velifer, in Oklahoma

2015 ◽  
Vol 96 (5) ◽  
pp. 946-956 ◽  
Author(s):  
Stephen R. Humphrey ◽  
Madan K. Oli
Keyword(s):  
Population Dynamics ◽  
Site Fidelity

Spatial structure of harbour seal populations and the implications thereof

2001 ◽  
Vol 79 (12) ◽  
pp. 2115-2127 ◽  
Author(s):  
T Härkönen ◽  
K C Harding
Keyword(s):  
Population Dynamics ◽  
Site Fidelity ◽  
Phoca Vitulina ◽  
Population Increase ◽  
Dynamic Processes ◽  
Term Study ◽  
Long Term Study ◽  
Harbour Seals ◽  
Age And Sex

A long-term study of freeze-branded harbour seals (Phoca vitulina) revealed explicit site fidelity. Individuals were followed up to 14 years of age and none of the 163 branded animals were observed to haul out beyond a 32-km distance from the site where they were branded as pups. Within this range, striking spatial segregation by age and sex prevailed. While females' site fidelity increased with age, males spent less time at their natal site with increasing age. These findings have consequences for understanding the population dynamics of harbour seals, since single "colonies" will act as partly isolated "subpopulations" in some contexts but not in others. The differing migration tendencies of the population segments lead to spatially segregated sex and age ratios of subpopulations and create a complex pattern of connectivity among these subpopulations. Ignoring the spatial scale will lead to severe misinterpretations of analyses of basic population-dynamic processes, especially rates of population increase, rates of gene flow, and the dynamics of the spread of diseases. We suggest that when studies have different aims, these should be addressed by encompassing different numbers of subpopulations.

Site-fidelity, longevity, and population dynamics of broad-tailed hummingbirds: a ten year study

Oecologia ◽  
1983 ◽  
Vol 56 (2-3) ◽  
pp. 359-364 ◽  
Author(s):  
William A. Calder ◽  
Nickolas M. Waser ◽  
Sara M. Hiebert ◽  
David W. Inouye ◽  
Sarah Miller
Keyword(s):  
Population Dynamics ◽  
Site Fidelity

Long-term winter-site fidelity in Song Sparrows (Melospiza melodia)

The Auk ◽  
2019 ◽  
Vol 136 (2) ◽  
Author(s):  
Tosha R Kelly ◽  
Keith A Hobson ◽  
Garth W Casbourn ◽  
Elizabeth A MacDougall-Shackleton ◽  
Scott A MacDougall-Shackleton
Keyword(s):  
Population Dynamics ◽  
Site Fidelity ◽  
Migratory Birds ◽  
Melospiza Melodia ◽  
Factors Affecting ◽  
Song Sparrows ◽  
Breeding Grounds ◽  
Wintering Areas ◽  
Migratory Movements

Abstract In migratory animals, the degree to which individuals return to the same wintering sites across multiple years can affect fitness and population dynamics, and thus has important implications for conservation. Despite this, long-term evaluations of wintering-site fidelity are rare for migratory birds: many populations are intensively studied on their breeding grounds but tracking the migratory movements of small birds once they leave the breeding grounds is challenging. To evaluate patterns of overwintering location and fidelity, we collected winter-grown claw tissue from 301 Song Sparrows (Melospiza melodia; 449 samples) captured in spring at their breeding grounds over 6 consecutive yr and assessed stable hydrogen isotope (δ2Hc) values to determine within-individual repeatability and between-year variation in wintering latitudes. We also retrieved useable data from 8 geolocators over 2 consecutive winters. Geolocator-derived wintering positions correlated with origins based on δ2Hc values. Consistent with previous findings, male δ2Hc values reflected more northerly wintering areas than those of females, indicating shorter latitudinal migration distances for males, but the magnitude of the sex difference varied across years. The distribution of wintering latitudes was generally consistent among years, except for the 2015 舑2016 winter, which had unusually negative δ2Hc values. Values of δ2Hc were repeatable for males but not for females, suggesting that winter-site fidelity could differ between sexes. The data presented here emphasize the importance of tracking migratory populations across multiple years to uncover factors affecting population dynamics.

scholarly journals Spatial variation in population dynamics of northern Great Plains piping plovers

2021 ◽  
Author(s):  
Rose J. Swift ◽  
Michael J. Anteau ◽  
Kristen S. Ellis ◽  
Megan M. Ring ◽  
Mark H. Sherfy ◽  
...  
Keyword(s):  
Population Dynamics ◽  
Spatial Variation ◽  
Great Plains ◽  
Northern Great Plains ◽  
Piping Plovers

scholarly journals Impacts of anthropogenic disturbance on body condition, survival, and site fidelity of nonbreeding Piping Plovers

The Condor ◽  
2018 ◽  
Vol 120 (3) ◽  
pp. 566-580 ◽  
Author(s):  
Daniel Gibson ◽  
Melissa K. Chaplin ◽  
Kelsi L. Hunt ◽  
Meryl J. Friedrich ◽  
Chelsea E. Weithman ◽  
...  
Keyword(s):  
Body Condition ◽  
Anthropogenic Disturbance ◽  
Site Fidelity ◽  
Piping Plovers

scholarly journals Extreme spawning-site fidelity in Atlantic cod

2011 ◽  
Vol 68 (7) ◽  
pp. 1472-1477 ◽  
Author(s):  
Jon Egil Skjæraasen ◽  
Justin J. Meager ◽  
Ørjan Karlsen ◽  
Jeffrey A. Hutchings ◽  
Anders Fernö
Keyword(s):  
Population Dynamics ◽  
Marine Fish ◽  
Site Fidelity ◽  
Gadus Morhua ◽  
Atlantic Cod ◽  
Spatial Scales ◽  
Local Population ◽  
Coastal Regions ◽  
Broadcast Spawning ◽  
Spawning Site

Abstract Skjæraasen, J. E., Meager, J. J., Karlsen, Ø., Hutchings, J. A., and Fernö, A. 2011. Extreme spawning-site fidelity in Atlantic cod. – ICES Journal of Marine Science, 68: 1472–1477. Based on a 3-year mark-recapture study, evidence is provided of spawning-site fidelity in Atlantic cod (Gadus morhua) at a scale (<1 km) smaller than documented previously. Coastal regions where barriers to dispersal exist may allow for local population dynamics and adaptation to develop in broadcast-spawning marine fish at extremely fine spatial scales.

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