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.

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.

scholarly journals The Double Standard of Aging for Men and Women: Evidence From Across Europe, 2006–2018

2020 ◽  
Vol 4 (Supplement_1) ◽  
pp. 556-557
Author(s):  
Richard Settersten ◽  
Jack Day ◽  
Gunhild Hagestad
Keyword(s):  
Multilevel Modeling ◽  
Old Age ◽  
Double Standard ◽  
European Social Survey ◽  
Individual Characteristics ◽  
Social Survey ◽  
Men And Women ◽  
Variation Explained ◽  
Cultural Constructions ◽  
Over Time

Abstract Is there a “double standard” (i.e., a harsher judgment) in the perceived ages at which women and men reach old age, and have these judgments changed over time? We use European Social Survey data from 23 countries in 2006 and newly released data from 16 of those countries in 2018. In both 2006 and 2018, men typically assign women substantially earlier ages than women themselves do. In some places, however, men also give themselves lower ages than women give them. With respect to when women become old, the differential views of men and women are persistent. So is the fact that women differentiate less between the sexes¬–though men differentiate less in 2018 relative to 2006. We use multilevel modeling to examine variation explained by both individual characteristics and country indicators of demographic and policy contexts. Findings underscore the significance of the double standard in cultural constructions of aging.

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 On the Estimation of Dispersal and Movement of Birds

The Condor ◽  
2004 ◽  
Vol 106 (4) ◽  
pp. 720-731 ◽  
Author(s):  
William L. Kendall ◽  
James D. Nichols
Keyword(s):  
Robust Design ◽  
Nonlinear Dynamic ◽  
Detection Probability ◽  
Cross Correlation ◽  
Statistical Methodology ◽  
Open Population ◽  
Abundance Estimates ◽  
Capture Recapture ◽  
Over Time

Abstract The estimation of dispersal and movement is important to evolutionary and population ecologists, as well as to wildlife managers. We review statistical methodology available to estimate movement probabilities. We begin with cases where individual birds can be marked and their movements estimated with the use of multisite capture-recapture methods. Movements can be monitored either directly, using telemetry, or by accounting for detection probability when conventional marks are used. When one or more sites are unobservable, telemetry, band recoveries, incidental observations, a closed- or open-population robust design, or partial determinism in movements can be used to estimate movement. When individuals cannot be marked, presence-absence data can be used to model changes in occupancy over time, providing indirect inferences about movement. Where abundance estimates over time are available for multiple sites, potential coupling of their dynamics can be investigated using linear cross-correlation or nonlinear dynamic tools. Sobre la Estimación de la Dispersión y el Movimiento de las Aves Resumen. La estimación de la dispersión y el movimiento es importante para los ecó logos evolutivos y de poblaciones, así como también para los encargados del manejo de vida silvestre. Revisamos la metodología estadística disponible para estimar probabilidades de movimiento. Empezamos con casos donde aves individuales pueden ser marcadas y sus movimientos estimados con el uso de métodos de captura-repactura para múltiples sitios. Los movimientos pueden ser monitoreados ya sea directamente, usando telemetría o teniendo en cuenta las probabilidades de detección cuando se usan marcas convencionales. Cuando uno o más sitios no pueden ser observados, se puede estimar el movimiento usando telemetría, recuperación de anillos, observaciones circunstanciales, un diseño poblacional robusto cerrado o abierto, o determinismo parcial de los movimientos. Cuando los individuos no pueden ser marcados, se pueden usar datos de presencia-ausencia para modelar los cambios en el tiempo de la ocupación, brindando inferencias indirectas sobre los movimientos. Cuando las estimaciones de abundancia a lo largo del tiempo están disponibles para varios sitios, se puede investigar la interrelación potencial de sus dinámicas usando correlaciones cruzadas lineales o herramientas para dinámica no lineal.

scholarly journals Optimizing the conservation of migratory species over their full annual cycle

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Richard Schuster ◽  
Scott Wilson ◽  
Amanda D. Rodewald ◽  
Peter Arcese ◽  
Daniel Fink ◽  
...  
Keyword(s):  
Annual Cycle ◽  
Migratory Species

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 On the Seasonal Eddy Variability in the Kuroshio Extension

2018 ◽  
Vol 48 (8) ◽  
pp. 1675-1689 ◽  
Author(s):  
Yang Yang ◽  
X. San Liang
Keyword(s):  
Energy Transfer ◽  
Annual Cycle ◽  
Kuroshio Extension ◽  
Baroclinic Instability ◽  
Primary Energy ◽  
Seasonal Cycles ◽  
External Forcing ◽  
Energy Transfers ◽  
The Kuroshio ◽  
Multiscale Window Transform

AbstractUsing a recently developed tool, multiscale window transform (MWT), and the MWT-based canonical energy transfer theory, this study investigates the seasonal eddy variability in the Kuroshio Extension. Distinct seasonal cycles of eddy kinetic energy (EKE) are observed in the upstream and downstream regions of the Kuroshio Extension. In the upstream Kuroshio Extension, the EKE peaks in summer and reaches its minimum in winter over an annual cycle. By diagnosing the spatiotemporal structures of the canonical barotropic and baroclinic energy transfers, we found that internal processes due to mixed instabilities (i.e., both barotropic and baroclinic instabilities) are responsible for the seasonal eddy variability in this region. In the downstream Kuroshio Extension, the EKE exhibits a different annual cycle, peaking in spring and gradually decaying from summer to winter. Significant inverse barotropic energy transfer is found in this region throughout the year, leaving baroclinic instability the primary energy source for the regional seasonal eddy variability. Besides the internal redistribution, it is also evident that the external forcing may influence the Kuroshio Extension EKE seasonality—the EKE is found to be more damped by winds during winter than summer.

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

scholarly journals Persuading US White evangelicals to vaccinate for COVID-19: Testing message effectiveness in fall 2020 and spring 2021

2021 ◽  
Vol 118 (49) ◽  
pp. e2114762118
Author(s):  
Scott E. Bokemper ◽  
Alan S. Gerber ◽  
Saad B. Omer ◽  
Gregory A. Huber
Keyword(s):  
United States ◽  
Single Point ◽  
The United States ◽  
Message Effectiveness ◽  
Community Interest ◽  
Survey Experiments ◽  
Community Protection ◽  
White Evangelicals ◽  
Over Time

The development of COVID-19 vaccines was an important breakthrough for ending the pandemic. However, people refusing to get vaccinated diminish the level of community protection afforded to others. In the United States, White evangelicals have proven to be a particularly difficult group to convince to get vaccinated. Here we investigate whether this group can be persuaded to get vaccinated. To do this, we leverage data from two survey experiments, one fielded prior to approval of COVID-19 vaccines (study 1) and one fielded after approval (study 2). In both experiments, respondents were randomly assigned to treatment messages to promote COVID-19 vaccination. In study 1, we find that a message that emphasizes community interest and reciprocity with an invocation of embarrassment for choosing not to vaccinate is the most effective at increasing uptake intentions, while values-consistent messaging appears to be ineffective. In contrast, in study 2 we observe that this message is no longer effective and that most messages produce little change in vaccine intent. This inconsistency may be explained by the characteristics of White evangelicals who remain unvaccinated vis à vis those who got vaccinated. These results demonstrate the importance of retesting messages over time, the apparent limitations of values-targeted messaging, and document the need to consider heterogeneity even within well-defined populations. This work also cautions against drawing broad conclusions from studies carried out at a single point in time during the COVID-19 pandemic.

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