scholarly journals Special Section: Gopher Tortoise Demographic Variables Estimated from Long‐Term Mark‐Recapture Data

2021 ◽  
Vol 85 (4) ◽  
pp. 615-616
Author(s):  
Clinton T. Moore ◽  
Elizabeth A. Hunter
2020 ◽  
Vol 31 (3) ◽  
pp. 453-460 ◽  
Author(s):  
Christina Halperin ◽  
Carolyn Freiwald ◽  
Gyles Iannone

AbstractThe Maya area has long been characterized as a mosaic of polities large and small, with cultural connections, linguistic dialects, ethnicities, and economic networks that shifted, expanded, and contracted over time. In this paper, we examine different ways of constructing boundaries. From physical demarcations in the landscape to habitual practices of interaction and affiliation, the lines that tied and divided were both unstable and multiple. We draw on definitions and theories from anthropology, history, and geography to review the concepts of borders, frontiers, and boundaries and their implications for the Maya area over the long term.


2018 ◽  
Vol 11 (1) ◽  
Author(s):  
Joachim Mariën ◽  
Vincent Sluydts ◽  
Benny Borremans ◽  
Sophie Gryseels ◽  
Bram Vanden Broecke ◽  
...  

2002 ◽  
Vol 24 (1) ◽  
pp. 51 ◽  
Author(s):  
JM Lanyon ◽  
HL Sneath ◽  
JM Kirkwood ◽  
RW Slade

This paper reports the commencement of the first mark-recapture program for a dugong (Dugong dugon) population. Moreton Bay, south-east Queensland supported a D. dugon population of more than 800 individuals in 1996 and is close to an urban centre, Brisbane. Several features of this population make a mark-recapture program feasible: a large resident population concentrated over a small and predictable area, a relatively clear water habitat, animals regularly exposed to boating traffic, and an efficient capture method. Fifty-four D. dugon were captured using the ?rodeo? method and tagged. Tags applied included a long-term dorsal PIT tag, a titanium turtle tag, fluke notch and temporary paint stick mark. For each D. dugon, body length, anal girth and gender were recorded. D. dugon were biopsied for genetic (microsatellite) analysis. Faecal samples were obtained for reproductive hormone assays. This program has the potential to yield information on trends in population size and distribution, population dynamics, mating strategies, social structure and general health of the population. This is the first season of a long-term project.


2021 ◽  
Author(s):  
Mariana Bendersky ◽  
Lucas Alessandro ◽  
Franco Appiani ◽  
Brenda Borrego Guerrero ◽  
Patricia Cairola ◽  
...  

COVID-19 disease has spread around the world since December 2019. Neurological symptoms are part of its clinical spectrum. Objective: To know the neurological manifestations in patients infected by COVID-19 in Argentina. Methods: Multicenter study conducted in adults, from May 2020 to January 2021, with confirmed COVID-19 and neurological symptoms. Demographic variables, existence of systemic or neurological comorbidities, the form of onset of the infection, alteration in complementary studies and the degree of severity of neurological symptoms were recorded. Results: 817 patients from all over the country were included, 52% male, mean age 38 years, most of them without comorbidities or previous neurological pathology. The first symptom of the infection was neurological in 56.2% of the cases, predominantly headache (69%), then anosmia / ageusia (66%). Myalgias (52%), allodynia / hyperalgesia (18%), and asthenia (6%) were also reported. 3.2% showed diffuse CNS involvement such as encephalopathy or seizures. 1.7% had cerebrovascular complications. Sleep disorders were observed in 3.2%. 6 patients were reported with Guillain Barre (GBS), peripheral neuropathy (3.4%), tongue paresthesia (0.6%), hearing loss (0.4%), plexopathy (0.3%). The severity of neurological symptoms was correlated with age and the existence of comorbidities. Conclusions: Our results, similar to those of other countries, show two types of neurological symptoms associated with COVID-19: some potentially disabling or fatal such as GBS or encephalitis, and others less devastating, but more frequent such as headache or anosmia that demand increasingly long-term care.


2013 ◽  
Vol 45 (3) ◽  
pp. 451-481 ◽  
Author(s):  
RODERIC AI CAMP

AbstractThe 2012 presidential election in Mexico is significant for many reasons, not least of which is that it returned the Partido Revolucionario Institucional to power after two Partido Acción Nacional administrations. This essay reviews more than 50 surveys taken before and during the election to determine significant patterns among Mexican voters, comparing the most influential traditional and non-traditional demographic variables, as well as other variables such as partisanship and policy issues in this election, with those of the two previous presidential races. It also analyses other influential variables in the 2012 presidential race, including social media and the application of new electoral legislation. It identifies significant differences and similarities among voters today in contrast to the two prior elections, and suggests long-term patterns among Mexican voters which are likely to influence voting behaviour in future elections, ranging from regionalism and gender to partisanship and social media.


1998 ◽  
Vol 20 (2) ◽  
pp. 302
Author(s):  
D. Goldney

A long-term mark-recapture program has been carried out on the Duckmaloi Weir (near Oberon, New south Wales) and associated river over the period 1986 to the present. The pipehead weir creates a long shallow ·pool' about 2.5 ha in area, ideal for gill-netting platypuses. One hundred and eighty-two (182) individual animals have been captured in excess of 500 times. The majority of animals have been captured in the weir pool. A very dynamic situation exists with new adults and juveniles being captured on a regular basis and conversely captured animals "disappearing" on a regular basis from the system. Some individuals exhibit both transience and site attachment characteristics. However, relatively few animals remain site attached for long periods of time. Sixty nine percent of individuals are captured two or fewer times. Band loss cannot account for this phenomenon. Of the captured animals, 11.3% have been caught more than 5 times. The sex ratio of the population favours females in first capture adults (1:1.72) but males in first capture juveniles (1:0.73). Females are more likely to be recaptured than males. The sex ratio of juveniles varies significantly from year to year. The period between recaptures varies greatly and can be up to 6 years. Four animals have been captured over nine years (3 females/1 male) but no animal has been captured every year of the study. Recruitment has occurred at levels able to maintain the current population numbers. Thirty percent of available adults have been found lactating, including second year females. Seventy one percent of first year capture juveniles and 89.9% of first capture adults "disappear" within two years of first capture. Forty two percent of juvenile animals reach adult status before "disappearing".


The Auk ◽  
2003 ◽  
Vol 120 (3) ◽  
pp. 811-817
Author(s):  
Jon S. Beadell ◽  
E. A. Schreiber ◽  
Ralph W. Schreiber ◽  
Gary A. Schenk ◽  
Paul F. Doherty

Abstract Survival of Brown Boobies (Sula leucogaster) at Johnston Atoll was examined over a 17-year period using capture-mark-recapture analysis. Annual adult survival was estimated to be 0.90 ± 0.01 (SE). Variation in survival did not correspond to either local environmental fluctuation or more widespread disturbances associated with El Niño-Southern Oscillation events, and a time-invariant model of survival was best supported by our data. Absence of major oceanographic anomalies in the immediate vicinity of Johnston Atoll may contribute to relatively high and invariant survival in Brown Boobies.


2016 ◽  
Vol 9 (3) ◽  
pp. 173-174 ◽  
Author(s):  
Si-hong Liu ◽  
Erich Bauer

2017 ◽  
Vol 24 (1) ◽  
pp. 27-40
Author(s):  
Jerry Yuwen Shiu

This study explored a systematic framework to understand the dynamic relationships of individual rationality in spa hotel choice. Taking a relational perspective, we examined the process of net value perception linking the antecedents (i.e. quality, price and risk) and consequence (i.e. willingness to buy (WTB)), along with the moderating effects of demographic variables on the links. A survey was conducted at spa hotels in four major spa regions of Taiwan. The findings indicated that the immediate situational factors of quality and price contribute to the net value perception, which in turn leads to the WTB. Oppositely, the long-term factor of risk does not have either direct or indirect effect when making such an infrequent decision. The contrarily moderating effects of demographic variables (e.g. gender, living region and consumptive frequency) on the decision paths present managers with directions to offer proper packages to reach their target customers.


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