منابع مشابه
Models of Harmful Algal Blooms
Models used to study harmful algal blooms are a subset of those used to examine more general planktonic processes. Most models have been heuristic, examining the likelihood of certain processes generating a harmful algal bloom. Several models have been more closely coupled to field data and have been used to gain insights into the dynamics underlying the observations. As better physical and bio...
متن کاملTaming Toxic Algae Blooms
The trouble began for Toledo, Ohio, in the spring of 2014, when extreme storms washed an unusually high pulse of nutrients into Lake Erie. By late summer, a massive bloom of blue-green algae, otherwise known as cyanobacteria, had shut down the city’s drinking water system. Powered by nutrients from agricultural runoff and the warm, calm summer waters, the algae spread across the lake and slowly...
متن کاملEvidence for parasite-mediated selection during short-lasting toxic algal blooms
Parasites play a role in the control of transient algal blooms, but it is not known whether parasite-mediated selection results in coevolution of the host and the parasites over this short time span. We investigated the presence of coevolution between the toxic dinoflagellate Alexandrium minutum and two naturally occurring endoparasites during blooms lasting a month in two river estuaries, usin...
متن کاملAlgal blooms reduce the uptake of toxic methylmercury in freshwater food webs.
Mercury accumulation in fish is a global public health concern, because fish are the primary source of toxic methylmercury to humans. Fish from all lakes do not pose the same level of risk to consumers. One of the most intriguing patterns is that potentially dangerous mercury concentrations can be found in fish from clear, oligotrophic lakes whereas fish from greener, eutrophic lakes often carr...
متن کاملA delay differential equation model on harmful algal blooms in the presence of toxic substances.
The periodic nature of blooms is the main characteristic in marine plankton ecology. Release of toxic substances by phytoplankton species or toxic phytoplankton reduce the growth of zooplankton by decreasing grazing pressure and have an important role in planktonic blooms. A simple mathematical model of phytoplankton-zooplankton systems with such characteristics is proposed and analysed. As the...
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ژورنال
عنوان ژورنال: Science
سال: 2017
ISSN: 0036-8075,1095-9203
DOI: 10.1126/science.356.6339.713-c