Life History and Environmental Factors Influence Population Density and Stage Structure in Hydrophyllum brownei

2006 ◽  
Vol 156 (1) ◽  
pp. 178-188 ◽  
Author(s):  
Travis D. Marsico
Keyword(s):  
Life History ◽  
Environmental Factors ◽  
Population Density ◽  
Stage Structure

Addicted to Hate: Identity Residual among Former White Supremacists

2017 ◽  
Vol 82 (6) ◽  
pp. 1167-1187 ◽  
Author(s):  
Pete Simi ◽  
Kathleen Blee ◽  
Matthew DeMichele ◽  
Steven Windisch
Keyword(s):  
Life History ◽  
Environmental Factors ◽  
White Supremacy ◽  
Physiological Responses ◽  
The Self ◽  
Cognitive Sociology ◽  
Recent Advances ◽  
White Supremacists ◽  
Using Data ◽  
Desire To Change

The process of leaving deeply meaningful and embodied identities can be experienced as a struggle against addiction, with continuing cognitive, emotional, and physiological responses that are involuntary, unwanted, and triggered by environmental factors. Using data derived from a unique set of in-depth life history interviews with 89 former U.S. white supremacists, as well as theories derived from recent advances in cognitive sociology, we examine how a rejected identity can persist despite a desire to change. Disengagement from white supremacy is characterized by substantial lingering effects that subjects describe as addiction. We conclude with a discussion of the implications of identity residual for understanding how people leave and for theories of the self.

Study on the Relationship between Population Density of Noctiluca scintillans and Environmental Factors in the Coastal Waters of Qinhuangdao

2014 ◽  
Vol 1010-1012 ◽  
pp. 635-638
Author(s):  
Yan Juan Xi ◽  
Zhen Liang Zhao ◽  
Chun Long Zhao ◽  
Yan Qin Xi ◽  
Li Yan ◽  
...  
Keyword(s):  
Environmental Factors ◽  
Population Density ◽  
Correlation Analysis ◽  
Dissolved Oxygen ◽  
Linear Correlation ◽  
Coastal Waters ◽  
Ammonia Nitrogen ◽  
Noctiluca Scintillans ◽  
Nitrite Nitrate ◽  
The Relationship

Based on the environmental survey data in off-shore of Qin Huangdao from May to June 2011,correlation analysis was made between population density of Noctiluca scintillans and environmental factors. The results indicates that population density of Noctiluca scintillans does not exist linear correlation with nitrite, nitrate, ammonia, nitrogen, phosphate,dissolved oxygen and PH ,it is positive correlation with temperature and silicate noctiluca and negatively correlation with transparency and salinity.

scholarly journals Effects of environmental factors on Tigriopus fulvus, Fischer 1860, a Mediterranean harpacticoid copepod

2018 ◽  
Vol 91 (1) ◽  
Author(s):  
Guido Bonello ◽  
Cristiano Angelini ◽  
Luigi Pane
Keyword(s):  
Climate Change ◽  
Life Cycle ◽  
Environmental Factors ◽  
Population Density ◽  
Harpacticoid Copepod ◽  
Environmental Parameters ◽  
Chemical Parameters ◽  
Climate Change Effects ◽  
Physical Chemical ◽  
Extinction Event

Tigriopus fulvus (Fischer, 1860) is a benthic harpacticoid copepod of the Mediterranean supralittoral zone. The transitional characteristics of this environment forced this species to develop high resistance to changes of environmental parameters. Nevertheless, Tigriopus fulvus life-cycle is influenced from the splashpools physical-chemical parameters. In this paper, we present the results of a supralittoral monitoring performed in 2014, confirming the influence of some of these environmental parameters on population buildups. Because of recent worldwide climate change effects, a threat might have been posed on this particularly exposed organism, whose population density decreased of a sixfold value in the last 30 years. During the three pools (A, B, C) monitoring, the maximum copepod density recorded was 1456 Ind/l (September 2014, Pool C), alongside first records of extinction event for Tigriopus fulvus.

scholarly journals Variability of pikeperch Sander lucioperca (L. 1758) cohorts in early life history

2019 ◽  
pp. 43
Author(s):  
Petr Blabolil ◽  
Martin Čech ◽  
Tomáš Jůza ◽  
Jiří Peterka
Keyword(s):  
Life History ◽  
Environmental Factors ◽  
Early Life ◽  
Early Life History ◽  
Zooplankton Abundance ◽  
Common Phenomenon ◽  
Sander Lucioperca ◽  
Fish Cohort ◽  
Slow Growing ◽  
Study Development

Year to year fluctuations in 0+ fish cohort strength are a common phenomenon. Many factors can affect cohort strength during the fish's early life period. In this study, development of a 0+ pikeperch Sander lucioperca cohort in the pelagic zone was studied by trawling for 50 days from first larvae hatching, in two consecutive years. In 2007, an abundant S. lucioperca cohort collapsed suddenly soon after hatching. After the incident, slow-growing S. lucioperca prevailed in the catch. In 2008, the catch gradually increased during the whole study period because of prolonged hatching. Environmental factors differed mainly in a slower temperature increase, higher water level and higher zooplankton abundance in 2008 compared to 2007. Our study revealed that a strong 0+ S. lucioperca cohort at the time of hatching might not result in a strong S. lucioperca cohort in general.

scholarly journals Life-history trade-offs in a generalist digenean from cetaceans: the role of host specificity and environmental factors

2015 ◽  
Vol 8 (1) ◽  
Author(s):  
Natalia Fraija-Fernández ◽  
Mercedes Fernández ◽  
Juan A. Raga ◽  
Francisco J. Aznar
Keyword(s):  
Life History ◽  
Environmental Factors ◽  
Host Specificity ◽  
Trade Offs

scholarly journals Relationship between childhood (un)predictability and life milestones in young Brazilians

2017 ◽  
Vol 11 (1) ◽  
pp. 92-101
Author(s):  
Cézar Donizetti Luquine Júnior ◽  
Anna Beatriz Carnielli Howat-Rodrigues ◽  
Patrícia Izar
Keyword(s):  
Life History ◽  
Environmental Factors ◽  
Life History Strategies ◽  
Data Support ◽  
Childhood Environment ◽  
First Child ◽  
The Family ◽  
Formal Employment

The present study sought to investigate whether perceived family unpredictability affects the development of life history strategies in both the reproductive and somatic domains by evaluating the ages at which life milestones occurred. In this study 211 young Brazilians answered a 10-item instrument that contained future milestones, the Family Unpredictability in Childhood, and a sociodemographic questionnaire. Not all participants had already achieved the milestones. Earlier ages of giving birth to the first child, marrying, starting a family, and at first formal employment were correlated with greater unpredictability scores. Significant correlations were found more frequently for the participants who had already met the milestones. Data support the importance of the childhood environment for later development. Results suggest that data obtained based on the ages at which milestones occurred and ages at which milestones are expected to occur may present important differences with regard to the influence of environmental factors.

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