scholarly journals ESTIMATING SURVIVAL AND TEMPORARY EMIGRATION IN THE MULTISTATE CAPTURE–RECAPTURE FRAMEWORK

Ecology ◽  
2004 ◽  
Vol 85 (8) ◽  
pp. 2107-2113 ◽  
Author(s):  
Michael Schaub ◽  
Olivier Gimenez ◽  
Benedikt R. Schmidt ◽  
Roger Pradel
Keyword(s):  
Temporary Emigration ◽  
Capture Recapture

scholarly journals Abundance, survival and temporary emigration of bottlenose dolphins (Tursiops sp.) off Useless Loop in the western gulf of Shark Bay, Western Australia

2012 ◽  
Vol 63 (11) ◽  
pp. 1059 ◽  
Author(s):  
Krista Nicholson ◽  
Lars Bejder ◽  
Simon J. Allen ◽  
Michael Krützen ◽  
Kenneth H. Pollock
Keyword(s):  
Western Australia ◽  
Bottlenose Dolphins ◽  
Early Spring ◽  
Anthropogenic Activity ◽  
Apparent Survival ◽  
Photo Identification ◽  
Temporary Emigration ◽  
Shark Bay ◽  
Abundance Estimates ◽  
Capture Recapture

Capture–recapture models were used to provide estimates of abundance, apparent survival and temporary emigration of Indo-Pacific bottlenose dolphins (Tursiops sp.) in a 226-km2 study area off Useless Loop in the western gulf of Shark Bay, Western Australia. Photo-identification data were collected during boat-based surveys in Austral autumn to early spring (April–September) from 2007 to 2011. Abundance estimates varied from 115 (s.e. 5.2, 95% CI 105–126) individuals in 2008 to 208 (s.e. 17.3, 95% CI 177–245) individuals in 2010. The variability in abundance estimates is likely to be a reflection of how individuals used the study area, rather than fluctuations in true population size. The best fitting capture–recapture model suggested a random temporary emigration pattern and, when coupled with relatively high temporary emigration rates (0.33 (s.e. 0.07) – 0.66 (s.e. 0.05)) indicated that the study area did not cover the entire ranges of the photo-identified dolphins. Apparent survival rate is a product of true survival and permanent emigration and was estimated annually at 0.95 (s.e. 0.02). Since permanent emigration from the study area is unlikely, true survival was estimated to be close to 0.95. This study provides a robust baseline for future comparisons of dolphin demographics, which may be of importance should climate change or increasing anthropogenic activity affect this population.

scholarly journals A Robust Design Capture-Recapture Analysis of Abundance, Survival and Temporary Emigration of Three Odontocete Species in the Gulf of Corinth, Greece

PLoS ONE ◽  
2016 ◽  
Vol 11 (12) ◽  
pp. e0166650 ◽  
Author(s):  
Nina Luisa Santostasi ◽  
Silvia Bonizzoni ◽  
Giovanni Bearzi ◽  
Lavinia Eddy ◽  
Olivier Gimenez
Keyword(s):  
Robust Design ◽  
Temporary Emigration ◽  
Gulf Of Corinth ◽  
Capture Recapture ◽  
Design Capture

Adult survival and temporary emigration in the common toad

2004 ◽  
Vol 82 (6) ◽  
pp. 859-872 ◽  
Author(s):  
Thierry Frétey ◽  
Emmanuelle Cam ◽  
Bernard Le Garff ◽  
Jean-Yves Monnat
Keyword(s):  
Bufo Bufo ◽  
Adult Survival ◽  
First Order ◽  
Temporary Emigration ◽  
Lek Mating ◽  
Capture Recapture ◽  
The Common ◽  
Intermittent Breeding ◽  
Using Data ◽  
The Individual

In vertebrates exhibiting intermittent breeding, breeding activity is a factor of critical importance in capture–recapture studies using data from individually marked animals. Nonbreeders can be absent from locations used by breeders and can be considered "temporary emigrants". We addressed the influence of sex on survival in common toads, Bufo bufo (L., 1758), using the Joly–Seber model and the existance of temporary emigration in male common toads by assessing trap-dependence and by conducting a robust design analysis. We addressed the hypothesis that the probability of the presence of an individual in the study area depends on the presence of the individual the year before (i.e., that transitions between reproductive states are a first-order Markovian process). Results provided support for the hypotheses of random temporary emigration, of sex-specific differences in survival, and of the presence of "transients" in males. Females had intermediate survival compared with the groups of "transients + residents" and "resident" males. Females had lower recapture probability under the Joly–Seber model, which may be interpreted as evidence of lower breeding probability or lower detectability of breeding females. Behaviour may explain this difference in that females may attend ponds for shorter periods. This may be common in species where females aggregate to seek fertilization and lay eggs in locations attended by males and in species with a "resource-based lek" mating system.

scholarly journals Full-annual demography and seasonal cycles in a resident vertebrate

2019 ◽  
Author(s):  
Murilo Guimarães ◽  
Décio Correa ◽  
Marília Palumbo Gaiarsa ◽  
Marc Kéry
Keyword(s):  
Annual Cycle ◽  
Single Point ◽  
Cyclic Behavior ◽  
Long Distance ◽  
Annual Cycles ◽  
Temporary Emigration ◽  
Important Variation ◽  
Species Population ◽  
Capture Recapture ◽  
Variation Explained

AbstractDemography is usually studied at a single point in time within a year when species, mostly long-distance migrants, are more active and easier to find. However, this provides only a low-resolution glimpse into demographic temporal patterns, compromising a complete understanding of species’ population dynamics over full annual cycles. The full annual cycle is often influenced by environmental seasonality, which induces a cyclic behavior in many species. However, cycles have rarely been explicitly included in models for demographic parameters, and most information on full annual cycle demography is restricted to migratory species. Here we used a high-resolution capture-recapture study of a resident tropical lizard to assess the full intra-annual demography and within-year periodicity in survival, temporary emigration and recapture probabilities. We found important variation over the annual cycle and up to 92% of the total monthly variation explained by cycles. Fine-scale demographic studies and assessments on the importance of cycles within parameters are fundamental to understand population persistence over time.

Estimating Temporary Emigration Using Capture-Recapture Data with Pollock's Robust Design

Ecology ◽  
1997 ◽  
Vol 78 (2) ◽  
pp. 563 ◽  
Author(s):  
William L. Kendall ◽  
James D. Nichols ◽  
James E. Hines
Keyword(s):  
Robust Design ◽  
Temporary Emigration ◽  
Capture Recapture

scholarly journals Full-annual demography and seasonal cycles in a resident vertebrate

PeerJ ◽  
2020 ◽  
Vol 8 ◽  
pp. e8658
Author(s):  
Murilo Guimarães ◽  
Decio T. Correa ◽  
Marília Palumbo Gaiarsa ◽  
Marc Kéry
Keyword(s):  
Annual Cycle ◽  
Single Point ◽  
Cyclic Behavior ◽  
Seasonal Cycles ◽  
Migratory Species ◽  
Temporary Emigration ◽  
Important Variation ◽  
Capture Recapture ◽  
Variation Explained ◽  
Over Time

Wildlife demography is typically studied at a single point in time within a year when species, often during the reproductive season, are more active and therefore easier to find. However, this provides only a low-resolution glimpse into demographic temporal patterns over time and may hamper a more complete understanding of the population dynamics of a species over the full annual cycle. The full annual cycle is often influenced by environmental seasonality, which induces a cyclic behavior in many species. However, cycles have rarely been explicitly included in models for demographic parameters, and most information on full annual cycle demography is restricted to migratory species. Here we used a high-resolution capture-recapture study of a resident tropical lizard to assess the full intra-annual demography and within-year periodicity in survival, temporary emigration and recapture probabilities. We found important variation over the annual cycle and up to 92% of the total monthly variation explained by cycles. Fine-scale demographic studies and assessments on the importance of cycles within parameters may be a powerful way to achieve a better understanding of population persistence over time.

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