Toxic algal blooms threaten marine life along Florida coastlines

AccessScience ◽  
2018 ◽  
Keyword(s):  
Algal Blooms ◽  
Marine Life

scholarly journals Saxitoxin and tetrodotoxin bioavailability increases in future oceans

2019 ◽  
Author(s):  
C.C. Roggatz ◽  
N. Fletcher ◽  
D.M. Benoit ◽  
A.C. Algar ◽  
A. Doroff ◽  
...  
Keyword(s):  
Species Interactions ◽  
Harmful Algal Blooms ◽  
Algal Blooms ◽  
Paralytic Shellfish Poisoning ◽  
Ecosystem Stability ◽  
Shellfish Poisoning ◽  
Marine Life ◽  
Paralytic Shellfish ◽  
Water Ph ◽  
Ph Increase

Increasing atmospheric levels of carbon dioxide are largely absorbed by the world’s oceans, decreasing surface water pH1. In combination with increasing ocean temperatures, these changes have been identified as a major sustainability threat to future marine life2. Interactions between marine organisms are known to depend on biomolecules, but the influence of oceanic pH on their bioavailability and functionality remains unexplored. Here we show that global change significantly impacts two ecological keystone molecules3 in the ocean, the paralytic toxins saxitoxin (STX) and tetrodotoxin (TTX). Increasing temperatures and declining pH increase the abundance of the toxic forms of these two neurotoxins in the water. Our geospatial global model highlights where this increased toxicity could intensify the devastating impact of harmful algal blooms on ecosystems in the future, for example through an increased incidence of paralytic shellfish poisoning (PSP). We also use these results to calculate future saxitoxin toxicity levels in Alaskan clams, Saxidomus gigantea, showing critical exceedance of limits save for consumption. Our findings for TTX and STX exemplarily highlight potential consequences of changing pH and temperature on chemicals dissolved in the sea. This reveals major implications not only for ecotoxicology, but also for chemical signals mediating species interactions such as foraging, reproduction, or predation in the ocean with unexplored consequences for ecosystem stability and ecosystem services.

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.).

scholarly journals A Study of the Effects of the San Francisco Oil Spill on Marine Organisms

1973 ◽  
Vol 1973 (1) ◽  
pp. 741-781 ◽  
Author(s):  
Gordon L. Chan
Keyword(s):  
San Francisco ◽  
Oil Spill ◽  
Algal Blooms ◽  
Large Population ◽  
Marine Organisms ◽  
Present Condition ◽  
Golden Gate ◽  
Marine Animals ◽  
Marine Life ◽  
Golden Gate Bridge

ABSTRACT The San Francisco oil spill occurred on January 18, 1971, during the early morning hours when two Standard Oil vessels collided almost directly under the Golden Gate Bridge, releasing 840,000 gallons of Bunker C fuel. This asphalt-like oil was washed up on intertidal shores of the area. Duxbury Reef, northwest of the Golden Gate Bridge, is literally the “backyard” of the author and the College of Marin's Bolinas Marine Station staff. Baseline transects have been established on this reef since 1958. The oil was heavily deposited on the reef's mussel beds and high tidal berm rocks. From comparative transect and laboratory observations, it was determined that marine organisms died from being smothered by the oil, with certain species, such as acorn barnacles and limpets, suffering the highest mortality at Sausalito and on Duxbury Reef. Comparison of pre-oil and post-oil transect counts showed there was a significant decrease in marine life after the oil spill on the reef Marine snails suffered less mortality than the sessile barnacles and other sedentary animals. The normally large population of striped shore crabs is missing from the rocky crevices. Finally, marine algal blooms were also observed in certain reef localities. The present condition of Duxbury Reef (December, 1971) is one of apparent good health; the recruitment of some marine animals appear to be approaching normal levels. The oil has disappeared from much of the reef surfaces and is barely discernible in the most heavily deluged areas. Continued studies will be aimed at watching the effects of oil on the recruitment of marine life throughout the afflicted areas of the Marin County coastline.

Marine life mortalities and Harmful Algal Blooms in the Northern Arabian Gulf

2020 ◽  
Vol 23 (2) ◽  
pp. 196-209
Author(s):  
Faiza Y. Al-Yamani ◽  
Igor Polikarpov ◽  
Maria Saburova
Keyword(s):  
Harmful Algal Blooms ◽  
Algal Blooms ◽  
Arabian Gulf ◽  
Marine Life

scholarly journals Predicting Harmful Algal Blooms and Impacts on Shellfish Mariculture using Novel Data-Driven Approaches

2021 ◽  
Author(s):  
Oliver Stoner ◽  
Theo Economou ◽  
Ricardo Torres ◽  
Ian Ashton ◽  
Andrew Brown
Keyword(s):  
Harmful Algal Blooms ◽  
Algal Blooms ◽  
Statistical Modelling ◽  
Data Driven ◽  
Short Term ◽  
Marine Life ◽  
Learning Framework ◽  
Modelling Framework ◽  
Bivalve Shellfish

Abstract Harmful algal blooms (HABs) intoxicate and asphyxiate marine life, causing devastating environmental and socio-economic impacts costing at least $8bn/yr globally. Accumulation of phycotoxins from HAB phytoplankton in filter-feeding shellfish can poison human consumers, prompting site harvesting closures if concentrations in shellfish exceed safe levels. To better quantify both long- and short-term HAB risks, we developed novel data-driven approaches to predict phycotoxin concentrations in bivalve shellfish associated with HAB forming Dinophysis species. Our spatiotemporal statistical modelling framework assesses long-term HAB risks for different shellfish species in both data-rich and data-poor locations. This can revolutionise mariculture management by more confidently informing optimal siting of new shellfish operations and safe harvesting periods for businesses. Meanwhile, our machine learning framework forecasts phycotoxin concentrations further into the future than previously possible. Across 6 coastal, estuarine and loch sites, we achieve 87% overall accuracy in predicting future harvesting shutdowns 0-8 weeks ahead.

Helping to support threatened marine life

Nature ◽  
2020 ◽  
Vol 578 (7795) ◽  
pp. 482-482
Author(s):  
Josie Glausiusz
Keyword(s):  
Marine Life

Warning on desalination's risks to marine life 

2019 ◽  
Author(s):  
Kristopher James Kent
Keyword(s):  
Marine Life

STRUKTUR KOMUNITAS MAKRO ALGA DI PESISIR PULAU KECAMATAN BULANG

SIMBIOSA ◽  
2014 ◽  
Vol 3 (2) ◽  
Author(s):  
Notowinarto Notowinarto ◽  
Ramses Ramses ◽  
Mulhairi Mulhairi
Keyword(s):  
Community Structure ◽  
Diversity Index ◽  
Algal Species ◽  
Algal Communities ◽  
Marine Life ◽  
Ph Values ◽  
Abundance Patterns ◽  
Coastal Marine ◽  
Temperature Parameter ◽  
Important Value Index

Bulang districts Batam Islands of  Riau province (Riau Islands), its consists of many islands with as well as having the potential diversity of coastal marine life in particular kinds of macro algae or seaweed. Conducted research aimed to determine the structure of macro- algal communities in the intertidal zone islands. The results of the identification of algal species found 16 species are: the Order of Chlorophyceae as 6 spesies; Order Phaeophyceae as 2 spesies; and Order Rhodophyceae as 8 spesies. The community structure at the five stations showed the highest values were found in the island of dominance Cicir (D ' = 0.79) , uniformity index values on Tengah Island (E ' = 0.99) , while the island Balak had the highest diversity index (H ' = 0.88) , with the abundance patterns of population structure on the island is pretty good Central . Results of correlation analysis of regression between IVI types of algae with the conditions of environmental quality suggests that there is a significance (Fhit ˃ F table and the value of r = > 90 %) between IVI algae Halimeda sp and Cryptarachne polyglandulosa at each station with a temperature parameter surface (⁰C) , depth temperature (⁰C) and pH values. Keywords : Algae, Community Structure, Important Value Index.

How Can We Use Fluorescence And Artificial Intelligence To Better Control Blue-Green Algal Blooms?

2018 ◽  
Author(s):  
Edoardo Bertone ◽  
Michele A. Burford ◽  
David P. Hamilton
Keyword(s):  
Artificial Intelligence ◽  
Algal Blooms ◽  
Green Algal
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