Evidence for an increasing incidence and severity of Harmful Algal Blooms in the southern Benguela region

  • Stephen V
  • Hockey P
  • 4

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Abstract

Harmful Algal Blooms (H range of trophic levels and impact on fisheries,
local species' populations, conservation management and the health
of both livestock and humans. Consequently, any increase in frequency
and/or toxicity of these events is of concern. Recently this concern
has been realized, with reported increases in the frequency of H
except Antarctica. This reported rise is supported by data from the
Benguela coast of western South Africa, where, since 1930, there
has been a significant increase in the frequency of H increase in
their average severity. There has been a sixfold increase in the
number of H 1990-2005 experiencing the greatest number of blooms,
as well as the most severe in terms of associated mortality. The
recent occurrence of previously unrecorded H way to explaining this
trend, and further implies that the increase is unlikely to diminish
in the near future

Author-supplied keywords

  • AN
  • AS
  • Antarctica
  • Article Geographic Terms: ASE
  • Article Subject Terms: Algal blooms
  • BLOOM
  • BLOOMS
  • Benguela Current
  • Biological poisons
  • COAST
  • COASTS
  • CONSERVATION
  • Coastal zone
  • Control & Remediation
  • D 04040 Ecosystem and Ecology Studies
  • Data
  • EE 40 Water Pollution: Monitoring
  • EVENT
  • FISHERIES
  • FREQUENCY
  • FUTURE
  • Fishery management
  • HARMFUL ALGAL BLOOMS
  • IMPACT
  • K 03450 Ecology
  • LEVEL
  • Livestock
  • M3 1010 Issues in Sustainable Development
  • MANAGEMENT
  • MORTALITY
  • Mortality causes
  • PHYTOPLANKTON
  • POPULATION
  • POPULATIONS
  • PS
  • Q1 01442 Population dynamics
  • REGION
  • Range
  • SOUTH-AFRICA
  • SW 3030 Effects of pollution
  • South Africa
  • South Atlantic
  • Southern
  • TOXICITY
  • Trophic Level
  • Trophic levels
  • africa
  • algal
  • algal blooms
  • associated
  • continents
  • eutrophication
  • in
  • increase
  • levels
  • species
  • the
  • universities
  • water pollution effects

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Authors

  • V C Stephen

  • P A R Hockey

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