Mitigating Impacts of Natural Hazards on Fishery Ecosystems

2008 ◽  
Keyword(s):  
Web Sites ◽  
Coastal Waters ◽  
Public Perception ◽  
Red Tide ◽  
Nutrient Loads ◽  
Red Tides ◽  
Sources Of Information ◽  
The Public ◽  
Southwest Florida ◽  
Human Health Effects

<em>Abstract</em>.—Red tides or blooms of the naturally occurring dinoflagellate <em>Karenia brevis </em>occur in the Gulf of Mexico from Texas to Florida and in the Atlantic from Florida to North Carolina. Blooms are particularly frequent and prolonged along Florida’s southwest coast. In recent years, red tide blooms have been persistent and devastating. These events have heightened the public perception that increased nutrient loads are exacerbating the frequency and severity of red tides in bays and nearshore coastal waters. In 2001, a telephone survey of 1,006 randomly selected households in southwest Florida was conducted to assess the public’s knowledge of red tide. Adult respondents were queried about their awareness of red tide and their knowledge of the biology, environmental effects, and human health effects of red tide. The most frequently cited sources of information were television and newspapers, followed by radio and word of mouth. Brochures, Internet Web sites, workshops, and meetings were less important sources of information. One of the most significant findings was that respondents were not aware that red tides originate in offshore waters. This finding is particularly important as citizen groups are seeking strategies to either minimize or control red tides in bays and nearshore coastal waters.

scholarly journals A Tricky Subject – archaeology in opinion polls on cultural heritage. Recent examples from Poland

2021 ◽  
Author(s):  
Agnieszka Oniszczuk
Keyword(s):  
Cultural Heritage ◽  
Public Perception ◽  
Heritage Management ◽  
Sources Of Information ◽  
Archaeological Heritage ◽  
The Public ◽  
Or Groups ◽  
Subjective Value ◽  
Archaeological Heritage Management ◽  
Opinion Polls

Understanding the public by analysing the wants, interests and expectations regarding their involvement in archaeology is one of the strategic aims of Europae Archaeologiae Consilium (EAC). Cultural heritage has been the topic of several public opinion polls in Poland over the past few years. In 2011 and 2015, the Narodowy Instytut Dziedzictwa (National Institute of Cultural Heritage) carried out two representative surveys. Subsequent polls focusing on more specific issues or groups of respondents were undertaken in 2015, 2017 and 2018. Other data from Poland come from the 2017 Special Eurobarometer survey on cultural heritage. They can be contrasted with archaeology-orientated opinion polls: a Europe-wide survey carried out within the NEARCH project led by Inrap (French National Institute for Preventive Archaeological Research) and several smaller-scale projects, which might be treated as starting points for more representative research. The scope of these surveys includes: public perception of cultural heritage and archaeology, subjective value of cultural heritage, attitudes towards archaeology, relevance of archaeology for the present (also in terms of the socio-economic potential of archaeological heritage), people's interaction with archaeology and archaeological heritage, sources of information about archaeological heritage etc. Comparison of these data will serve to establish the relevance of surveys for archaeological heritage management. The author will also examine if the specific nature of archaeological heritage is reflected in the surveys and how the public feels about its most hidden heritage. Based on the results of her analysis, the author will look at the desired scope of a survey aimed at filling the identified gaps and shaped to fit the needs of evidence-based archaeological heritage management.

Red Tide: Why a Biologic, HDFx, and Magnesium Could be used to allay Inflammatory and Lung Problems Caused by Algal Blooms: Hypothesis

2021 ◽  
Vol 6 (1) ◽  
Keyword(s):  
South America ◽  
Central America ◽  
Coastal Waters ◽  
Algal Blooms ◽  
Red Tide ◽  
South Pacific ◽  
Red Tides ◽  
Marine Life ◽  
The Past

Over the past decade, there has been a growing concern over invasion of Florida Gulf Coastal Waters and beaches by several algal blooms created by “red tides”. These algal blooms create various toxins that pose high risks for marine life, livestock, birds, and humans [1, 2]. The algae become so numerous that they discolor gulf waters and beaches. Since the 1980’s, red tides have been seen in many countries throughout the globe (i.e., South America, Central America, Japan, caribbean, South Pacific regions, etc.).

Mitigating Impacts of Natural Hazards on Fishery Ecosystems

2008 ◽  
Author(s):  
Bob Degner
Keyword(s):  
Research Agenda ◽  
Red Tide ◽  
Public Awareness ◽  
Coastal Communities ◽  
Red Tides ◽  
Negative Effects ◽  
University Of Florida ◽  
Economic Implications ◽  
Southwest Florida ◽  
Algae Blooms

<em>Abstract.</em>—Red tides are naturally occurring events in Florida. However, these algae blooms can create conditions that may result in negative effects on coastal communities and businesses. This paper describes University of Florida (UF) research efforts that were conducted to better understand the eventual economic implications of red tide events. The UF red tide research agenda is described, which attempts to qualitatively link public awareness of red tide events with changes in water-related activities (including beach and park attendance), patronage of water-proximate businesses, and, finally, business sales. The business sales analyses focus primarily on the restaurant and lodging sectors in the coastal communities impacted by red tides in both the panhandle and southwest regions of Florida. Case studies were also conducted for a small group of beachfront restaurants in southwest Florida, as well as the Lee County lodging sector. The findings of these studies highlight the vulnerability of coastal communities to red tide events and emphasize the need for a better appreciation of the implications of red tide events from both biological and socioeconomic perspectives.

scholarly journals Are Oil Spills Enhancing Outbreaks of Red Tides in the Chinese Coastal Waters from 1973-2017?

2021 ◽  
Author(s):  
xin LIU ◽  
chunchang zhang ◽  
ruiying geng ◽  
xin lv
Keyword(s):  
Oil Spill ◽  
Coastal Waters ◽  
Oil Spills ◽  
Red Tide ◽  
Contingency Management ◽  
Coastal Region ◽  
Red Tides ◽  
The Relationship ◽  
Spilled Oil ◽  
Shed Light

Abstract Between 1973–2017, evidences of red-tide outbreaks and oil spill accidents in the Chinese coastal waters were collected. Statistical analysis and multiple regression models were used to determine the relationship between the red tide and the oil spill. Major findings reveal that, (1) the frequency of red tides positively correlates to the number of oil spills and the volume of oil spilled as well; (2) The higher percentage of small spills (< 7 tonnes) are more likely to enhance the outbreaks of red tides; (3) More severe oil spill with penalty recorded implies a higher possibility to trigger the red tide afterwards. Therefore, oil spill contingency management aiming at preventing oil spills and mitigating spill effect could be of benefit to decrease the frequency of red tides as well. For example, it is suggested to carry out physical combat instead of chemical dispersants to remove the spilled oil in the shallow coastal areas for reducing the outbreak risk of red tides after the oil spill. The findings from this study shed light on the preventative management of red tides occurrence in the Chinese coastal waters and the similar coastal region elsewhere.

scholarly journals Nutrient load estimation in nonpoint source pollution of Hong Kong region

2005 ◽  
Vol 51 (3-4) ◽  
pp. 209-216 ◽  
Author(s):  
H.E. Li ◽  
J.H.W. Lee ◽  
A. Koenig ◽  
A.W. Jayawardena
Keyword(s):  
Hong Kong ◽  
Nonpoint Source Pollution ◽  
Coastal Waters ◽  
River Flow ◽  
Nonpoint Source ◽  
Nutrient Loads ◽  
Red Tides ◽  
Land Uses ◽  
Control Zone ◽  
Mean Concentration

Red tides and eutrophication have been frequently observed over the past two decades in coastal waters around Hong Kong, which are caused by many factors and one of them is the nutrient from nonpoint source pollution (NSP). This paper concentrates on the nutrients carried by river flow from watersheds. Since there are no systematical data sets of nonpoint source pollution in Hong Kong, monthly river water quality measurements, rainfall and river flow data, land uses, and other related information are used to analyze the characteristics of NSP and estimate the nutrient loads for Hong Kong region. Main achievements are as follows: firstly, besides mean concentration for single land use, the concept of integrated mean concentration for mixed land uses was proposed and applied. Secondly, mean concentrations were carried out for different land uses (agriculture, town, grassland, shrubland and woodland), each Water Control Zone, and Hong Kong region. Thirdly, the annual nutrient loads were estimated, for the first time in this paper, with various methods for the whole area of Hong Kong, and about 8,000 tons of TN and 1,500 tons TP are transported into coastal waters from Hong Kong's land in 1998.

Population ecology of Noctiluca scintillans Macartney, a red-tide-forming dinoflagellate

1999 ◽  
Vol 50 (3) ◽  
pp. 243 ◽  
Author(s):  
Shauna Murray ◽  
Iain M. Suthers
Keyword(s):  
Nutritional Status ◽  
Population Ecology ◽  
Coastal Waters ◽  
Red Tide ◽  
Good Condition ◽  
Late Summer ◽  
Red Tides ◽  
Noctiluca Scintillans ◽  
Near Surface ◽  
Eastern Australia

The population ecology of the large heterotrophic dinoflagellate Noctiluca scintillans Macartney was examined in the coastal ocean and two estuaries in south-eastern Australia from July 1996 to June 1997. High concentrations (>100 cells L–1) occurred in spring and again in late summer, and low concentrations (<5 cells L–1) in mid summer and mid winter. Abundances were greater in coastal waters than in the estuaries during all months in which concentration exceeded 1 cell L–1. During the spring bloom, Noctiluca cells from coastal stations had small diameters (340–450 µm), a high nutritional status and a high proportion of division stages, indicative of good condition. During the late summer blooms, poor-condition cells were found in coastal waters and especially in the near-surface concentrations of red tides (>104 cells L–1), and were characterized by large diameters (400–1200 µm), cell lysis and uniformly low nutritional status; at this time, Noctiluca cells from estuaries were generally fewer, smaller and in better condition. Overall, cell concentrations were higher in coastal waters than in the estuaries, and red tides of Noctiluca probably developed along the local coast (in spring) or were advected into the area from northern regions (in late summer).

scholarly journals Perceptions of the Adult US Population regarding the Novel Coronavirus Outbreak

2020 ◽  
Author(s):  
SarahAnn M. McFadden ◽  
Amyn A. Malik ◽  
Obianuju G. Aguolu ◽  
Kathryn S. Willebrand ◽  
Saad B. Omer
Keyword(s):  
Public Health ◽  
Risk Perceptions ◽  
Public Perception ◽  
The Novel ◽  
Sources Of Information ◽  
The Public ◽  
Health Leadership ◽  
The Us ◽  
Novel Coronavirus ◽  
Public Health Leadership

AbstractBackgroundCOVID-19 outbreak is spreading globally. Although the risk of infection in the US is currently low, it is important to understand the public perception of risk and trust in sources of information to better inform public health messaging. In this study, we surveyed the adult US population to understand their risk perceptions about the COVID-19 outbreak.Methods and FindingsWe used an online platform to survey 718 adults in the US in early February 2020 using a questionnaire that we developed. Our sample was fairly similar to the general adult US population in terms of age, gender, race, ethnicity and education. We found that 69% of the respondents wanted the scientific/public health leadership (either the CDC Director or NIH Director) to lead the US response to COVID-19 outbreak as compared to 14% who wanted the political leadership (either the president or the Congress) to lead the response. Risk perception was low (median score of 5 out of 10) with the respondents trusting health professionals and health officials for information on COVID-19. Majority of the respondents were in favor of strict infection prevention policies to control the outbreak.ConclusionGiven our results, the public health/scientific leadership should be at the forefront of the COVID-19 response to promote trust.

scholarly journals RED TIDE DETECTION USING Seawifs STANDARD CHOLOROPHYLL-a ALGORITHM IN SOUTHEAST KOREAN WATERS

2012 ◽  
Vol 9 (1) ◽  
Author(s):  
Gathot Winarso
Keyword(s):  
Chlorophyll A ◽  
Coastal Waters ◽  
Red Tide ◽  
Wide Field ◽  
Red Tides ◽  
A Algorithm ◽  
Concentration Data ◽  
Chlorophyll A Concentration ◽  
Korean Waters ◽  
Wide Field Of View

Cochlodinium  polykrikoides  red  tides  have  occurred  in  summer  every  year  at coastal  waters  of  the  South  Korea.  Chlorophyll-a  concentration  data  estimated  from  ocean color satellite SeaWiFS (Sea-viewing Wide Field-of-view  Sensor)  were  used to detect the red tide in this study. The high value of chlorophyll-a concentration used  to detect red tide was analyzed  and   compared  with  red  tide  map  produced  by  National  Fisheries  Research  and Development Institute of Korea (NFRDI). Based on SeaWiFS data and NFRDI red tide map, it was  found  that  high  chlorophyll-a concentration  of  ≥  5  mg/m3in  SeaWiFS  images corresponded to the red-tide occurrence with some limitations. 

Analysis of public perception about ionizing radiation

2019 ◽  
Vol 54 (4) ◽  
pp. 289-293 ◽  
Author(s):  
Ranim Y. Nasr ◽  
Rashid A. Barnawi ◽  
Osama N. Radi ◽  
Mohammed Wazzan ◽  
Nadia Batawil ◽  
...  
Keyword(s):  
Ionizing Radiation ◽  
Public Perception ◽  
Healthcare Providers ◽  
Cross Sectional Study ◽  
Sources Of Information ◽  
Cross Sectional ◽  
The Public ◽  
Gender And Education ◽  
Nuclear Plants ◽  
Radiation Awareness

This study assessed the level of public knowledge regarding ionizing radiation, the sources of information available to the public, and the preferred sources of education. A descriptive cross-sectional study was conducted in Jeddah, Saudi Arabia. A 15-question survey was distributed to participants who attended a radiation awareness activity held for the public. Participants were asked to rank their confidence regarding ionizing radiation knowledge on a Likert-style scale. They also answered questions on their perception of risks, the source from which they received health information, and their preferred method of education. Only 3% of the 244 participants were “knowledgeable” about ionizing radiation. Nine percent stated they were confident about their ionizing radiation knowledge, and they were more knowledgeable than unconfident individuals (p = 0.041). Age, gender, and education level played no role in ionizing radiation knowledge (p = 0.746, p = 0.245, and p = 0.060, respectively). Among those who had undergone a medical imaging investigation during the past year, only 24% received an explanation of the risks and benefits. Participants overestimated the risk of nuclear plants, as this was selected as the source with the greatest risk to health, followed by medical sources. Most of those who had prior knowledge searched for the information on the internet (34%), however, more participants would prefer to receive education from their healthcare providers (36%).

scholarly journals Microbial Communities in Water during Red Tides along the Coast of China-A Case Study of Prorocentrum Donghaiense Red Tide in the East China Sea

2021 ◽  
Vol 3 (1) ◽  
Author(s):  
Bei Huang ◽  
Na Wei ◽  
Yuheng Hu ◽  
Hongyue Mao
Keyword(s):  
Microbial Communities ◽  
East China Sea ◽  
Relative Abundance ◽  
Coastal Waters ◽  
Red Tide ◽  
East China ◽  
Red Tides ◽  
The East China Sea ◽  
China Sea ◽  
Sea Area

Red tides are a major public hazard in the global oceans. The coast of the East China Sea is the sea area where red tide disasters are the most frequent and serious in China. In order to accurately grasp the occurrence of red tides in the coastal waters of the East China Sea, and to understand the microbial communities in the waters during the occurrence of red tides in the East China Sea, a special survey of red tides in the coastal waters of Zhejiang, China was carried out in June 2018. The results showed that nutrient concentrations of N and P were generally high in this area, DIN concentrations in most areas exceeded the permitted limit of Chinese seawater quality grade I. There were significant differences in dissolved oxygen, pH, COD, chlorophyll and phytoplankton abundance of red tides. During the investigation, red tides were found in the waters near the Yushan Islands. The content of chlorophyll a was 42.12mg/m3, the cell abundance of phytoplankton was 8.16×108/L, and the abundance of Prorocentrum edulis accounted for 98.5%. The Illumina MiSeq sequencing platform was used for 16s high-throughput sequencing of water microorganisms, and a total of 16 bacteria were identified. Proteobacteria is the first dominant phylum, followed by Cyanobacteria and Bacteroides. Some differences in bacterial community compositions between HAB and the nearby seawater were observed. The predominant bacteria in the red tide occurrence area were Proteobacteria, comprising 46.1% of the relative abundance; while the predominant bacteria in the nearby sea area, comprising 42.0% of the relative abundance.

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