Juvenile fish assemblage recruitment dynamics in a mid-Atlantic estuary: before and after Hurricane Sandy

2020 ◽  
Vol 641 ◽  
pp. 177-193
Author(s):  
JL Valenti ◽  
TM Grothues ◽  
KW Able
Keyword(s):  
Fish Assemblage ◽  
Structural Characteristics ◽  
Juvenile Fish ◽  
Hurricane Sandy ◽  
Otter Trawl ◽  
Long Term Effects ◽  
Frequency Distributions ◽  
Barnegat Bay ◽  
Before And After ◽  
Hurricane Effect

Hurricanes can have long-term effects on estuarine fauna. Understanding these effects is important as climate change may influence the severity and frequency of these storms. On 29 October 2012, Hurricane Sandy, a large storm spanning roughly 1850 km in diameter, made landfall in Brigantine, New Jersey (USA), approximately 20 km south of Barnegat Bay, during an ongoing study of the bay’s ichthyofauna, providing an opportunity to observe fish recruitment dynamics coincident with hurricane passage. The objective of this study was to measure variance in the Barnegat Bay pre-Sandy fish assemblage relative to that of 1 and 2 yr after the storm. Barnegat Bay fishes were surveyed with an extensive otter trawl study in April, June, August, and October of 2012 (pre-Sandy), 2013 (1 yr post-Sandy), and 2014 (2 yr post-Sandy). Species composition of the fish assemblage was similar across years. Analyzed structural characteristics (abundance, diversity, richness) of the fish assemblage were occasionally more likely to occur or were larger pre-Sandy and 2 yr post-Sandy relative to 1 yr post-Sandy, but this trend was inconsistent across seasons and between structural characteristics. Furthermore, odds of occurrence and length frequency distributions for many resident species and sentinel fall/winter spawners did not indicate that variance could be definitively explained as a hurricane effect. The capability of fish to relocate from areas of temporarily unsuitable habitat and annual new recruitment of larvae and juveniles to the bay likely contributed to the observed stability in the fish assemblage.

Benthic Community Structure and Sediment Properties in Barnegat Bay, New Jersey, Before and After Hurricane Sandy

2016 ◽  
Vol 40 (1) ◽  
pp. 160-172 ◽  
Author(s):  
Gary L. Taghon ◽  
Patricia A. Ramey ◽  
Charlotte M. Fuller ◽  
Rosemarie F. Petrecca ◽  
Judith P. Grassle
Keyword(s):  
Community Structure ◽  
New Jersey ◽  
Benthic Community ◽  
Hurricane Sandy ◽  
Benthic Community Structure ◽  
Sediment Properties ◽  
Barnegat Bay ◽  
Before And After

EAARL-B submerged topography: Barnegat Bay, New Jersey, post-Hurricane Sandy, 2012-2013

Data Series ◽  
10.3133/ds887 ◽  
2014 ◽  
Author(s):  
C. Wayne Wright ◽  
Rodolfo J. Troche ◽  
Christine J. Kranenburg ◽  
Emily S. Klipp ◽  
Xan Fredericks ◽  
...  
Keyword(s):  
New Jersey ◽  
Hurricane Sandy ◽  
Barnegat Bay

scholarly journals Feasibility and Enjoyment of Exercise Video Games in Older Adults

2020 ◽  
Vol 4 (Supplement_1) ◽  
pp. 559-559
Author(s):  
Sara Freed ◽  
Briana Sprague ◽  
Lesley Ross
Keyword(s):  
Older Adults ◽  
Video Games ◽  
Game Design ◽  
Long Term Effects ◽  
Short Term ◽  
Qualitative And Quantitative ◽  
Before And After ◽  
Xbox Kinect ◽  
Game Developers

Abstract Interventions using exercise video games, or exergames, have shown short-term cognitive and physical benefits to older adults, though long-term effects are less promising. Enjoyment of exergames may promote exergame use after the intervention period, though little work has examined older adults’ views of exergames before and after gameplay experience. We invited 20 older adults between 65 and 84 years of age (M=73.30, SD=5.95) to play two Xbox Kinect games, Just Dance and Kinect Sports Rivals, for twenty minutes. In our presentation, we will present qualitative and quantitative findings of this pilot study, including findings that older adults reported that they were not likely to play similar exergames in the future and that they did not find the exergames to be more fun compared to other ways of exercising. We will discuss implications for game design and research relevant to game developers, manufacturers, and researchers. Part of a symposium sponsored by Technology and Aging Interest Group.

scholarly journals Modeling the Impact of Atmospheric Warming on Staple Crop Growth in China in the 1960s and 2000s

Atmosphere ◽  
2020 ◽  
Vol 12 (1) ◽  
pp. 36
Author(s):  
Qing Zhang ◽  
Wen Zhang ◽  
Yongqiang Yu ◽  
Tingting Li ◽  
Lijun Yu
Keyword(s):  
Winter Wheat ◽  
Climate Warming ◽  
Northeast China ◽  
Cropping Systems ◽  
Crop Growth ◽  
East China ◽  
Frequency Distributions ◽  
Before And After ◽  
The 1960S ◽  
The Impact

Responses of crop growth to climate warming are fundamental to future food security. The response of crops to climate change may be subtly different at their growing stages. Close insights into the differentiated stage-dependent responses of crops are significantly important in making adaptive adjustments of crops’ phenological optimization and cultivar improvement in diverse cropping systems. Using the Agro-C model, we studied the influence of past climate warming on crops in typical cropping systems in China. The results showed that while the temperature had increased distinctly from the 1960s to 2000s, the temperature frequency distributions in the growth season of crops moved to the high-temperature direction. The low temperature days during the crop growth periods that suppress crop growth decreased in the winter wheat area in North and East China, rice and maize areas in Northeast China, and the optimum temperature days increased significantly. As a result, the above ground biomass (AGB) of rice and maize in Northeast China and winter wheat in North and East China increased distinctly, while that of rice in South China had no significant change. A comparison of the key growth periods before and after heading (silking) showed that the warming before heading (silking) made a great contribution to the increase in the AGB, especially for winter wheat.

scholarly journals Physicochemical and structural characteristics of HEU-type zeolitic tuff treated by hydrochloric acid

2004 ◽  
Vol 69 (4) ◽  
pp. 273-282 ◽  
Author(s):  
Ana Radosavljevic-Mihajlovic ◽  
Vera Dondur ◽  
Aleksandra Dakovic ◽  
Jovan Lemic ◽  
Magdalena Tomasevic-Canovic
Keyword(s):  
Crystal Structure ◽  
Hydrochloric Acid ◽  
Bosnia And Herzegovina ◽  
Acid Treatment ◽  
Structural Characteristics ◽  
Chemical Analyses ◽  
Zeolitic Tuff ◽  
Zeolitic Tuffs ◽  
Before And After

Samples of natural HEU-type zeolites ? clinoptilolite-Ca, from the Novakovici deposit (near Prijedor, Bosnia and Herzegovina) were treated with the hydrochloric acid of various concentrations (from 10-3Mto 2M). Zeolitic tuffs before and after the acid treatment were examined using IR, XRPD, and chemical analyses. The changes in the crystal structure of acid treated samples showed a significant reduction in the crystallinity of zeolitic tuffs (60?70 %), which were effected by hydrochloric acid with concentrations of 1 M and above.

Sediment granulometry and salinity drive spatial and seasonal variability of an estuarine demersal fish assemblage dominated by juvenile fish

2018 ◽  
Vol 212 ◽  
pp. 241-252 ◽  
Author(s):  
Yureidy Cabrera Páez ◽  
Consuelo María Aguilar-Betancourt ◽  
Gaspar González-Sansón ◽  
Fátima Negrete Rodríguez ◽  
Michelle Gray
Keyword(s):  
Fish Assemblage ◽  
Seasonal Variability ◽  
Juvenile Fish ◽  
Demersal Fish

scholarly journals Peningkatan Status Perkembangan Anak Prasekolah dengan Stimulasi Perkembangan

JKEP ◽  
2020 ◽  
Vol 5 (2) ◽  
pp. 150-160
Author(s):  
Santun Setiawati ◽  
Agus Citra Dermawan ◽  
Raden Siti Maryam
Keyword(s):  
Univariate Analysis ◽  
Wilcoxon Test ◽  
Good Growth ◽  
Frequency Distributions ◽  
Growth Status ◽  
Development Status ◽  
Significant Difference ◽  
Before And After ◽  
Quasi Experimental ◽  
Children Development

The children are not small adults, but have unique characteristics that are always growing and evolving since their conception until the end of adolescence. Good growth and development of children requires appropriate stimulation and accordance with the age such as developmental stimulation. The aim of this study was to determine the influence development simulations towards pre-school children’s growth status. This research was using the quasi-experimental design without control. The numbers of respondents were 30 children (with aged 60-72 month). The children with dubious developmental status had performed the development stimulations for 2 weeks for 3-4 housr a day and evaluated the development status. Developmental Pre-Screening Questionnaire (KPSP) instrument used in this research. The data analysis was using univariate analysis (frequency distributions), bivariate (Wilcoxon test) and multivariate (ANCOVA test). There was a significant difference in the children’s development status before and after development stimulation interventions (p= 0.000), but there was no children and mothers’ characteristic factors that affect the children development status. Stimulation associated with the value of child development, where the high category of stimulation is not found in children whose development category is slow. So it takes stimulation of children from an early age. Growth stimulations can be done routinely as a part of efforts to improve the children development status.

Change in the rocky reef fish fauna of the iconic Poor Knights Islands Marine Reserve in north-eastern New Zealand over 4 decades

2018 ◽  
Vol 69 (10) ◽  
pp. 1496
Author(s):  
David R. Schiel ◽  
Tony Ayling ◽  
Michael J. Kingsford ◽  
Christopher N. Battershill ◽  
J. Howard Choat ◽  
...  
Keyword(s):  
Reef Fish ◽  
Fish Species ◽  
Marine Reserve ◽  
Fish Fauna ◽  
Rocky Reef ◽  
Long Term Effects ◽  
Before And After ◽  
Negative Effect ◽  
Reef Fish Species

Marine reserves exhibit increases in targeted fish species, but long-term effects on biodiversity are poorly understood. Factors other than reserve status may affect decadal changes, including environmental change. We examined the fish fauna at the iconic Poor Knights Islands over 4 decades (1974–2016) before and after implementation of a no-take marine reserve in 1998. We document a substantial increase in commercially and recreationally targeted Chrysophrys auratus, which was virtually absent before 1994 but by 2016 had reached up to 11 fish per 500m2 (220 per hectare). There were also large changes to the fish community, including the decline of subtropical and coastal wrasses, some species with no change and others that increased significantly. Many declines occurred >20 years before the arrival of abundant C. auratus, suggesting the changes do not represent a trophic cascade. Furthermore, this normally benthic-feeding fish has adopted a mid-water foraging behaviour targeting planktivorous fish. The increase in C. auratus appears to be linked both to reserve status and catch regulations in the wider region. Overall, the data point to long-term environmental fluctuations from the late 1970s having a negative effect on the abundance of more than half the reef fish species at these islands.

Evaluating the Effectiveness of Social Visualization Within Virtual Communities

2010 ◽  
pp. 783-801
Author(s):  
Diana Schimke ◽  
Heidrun Stoeger ◽  
Albert Ziegler
Keyword(s):  
Virtual Communities ◽  
Virtual Community ◽  
Participation Rate ◽  
Communication Technologies ◽  
Visualization Tool ◽  
Long Term Effects ◽  
Significant Difference ◽  
Before And After ◽  
Actual Effectiveness ◽  
Social Visualization

Participation and system usage is crucial for virtual communities to develop and sustain. However, many communities report very low participation rates of members. Finding and studying strategies for fostering participation in virtual communities is therefore a growing field of research and different approaches for strengthening participation in virtual communities exist – among them social visualization. While many tools for visualizing social interactions have been developed, not much empirical evidence about their actual effectiveness exists. To find out more about the effectiveness of social visualization on the participation rate (number of logins, forum posts, personal messages, and chat posts) the authors conducted an empirical study within CyberMentor – a virtual community for high school girls interested in science and technology. In their sample of N=231 girls the authors did not find a significant difference between the number of logins in the phases before and after the introduction of the visualization tool. The number of forum post, chat posts and personal messages however increased significantly after the incorporation of the visualization tool. Long-term effects were found for one-to-many communication technologies (forum, chat), but not for personal messages (one-to-one)

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