BIO1042 Lecture Notes - Lecture 19: Persistent Organic Pollutant, Anabaena, Microcystis

27 views2 pages

Document Summary

Cyanobacterial blooms-effects: ponds and lakes covered in scum, poisonous to humans and livestock. Increase in bacterial decomposers, o2 shortages, fish kills. Toxins in blue-green algae: hepatotoxins( anabaena, microcystis, nodularia ) liver failure, possibly tumours. Microcystins the most significant drinking water quality issue re blooms in se australia: neurotoxins-( anabaena, nostoc ) paralysis, endotoxins dermatitis and allergies, 1. 3mg/l = maximum permitted. Red tides: toxic dinoflagellate blooms: red tide-causing dinoflagellates (phytoplankton): growth and reproduction stimulated by eutrophication up to 1 x 106cells ml-1. Toxic dinoflagellate blooms: psp-paralytic shellfish poisoning, toxic dinoflagellates -concentrated by shellfish (eg. oysters, mussels). Saxitoxin alkaloid: humans and birds -poisoned by eating toxic shellfish, also: nsp (neurotoxic) dsp (diarrhetic) Seals and fish -affected by consuming contaminated fish(that have eaten toxic shellfish). Source: industrial wastes, pesticides; impair liver and immune function, cancer in animals: polychlorinated biphenyls (pcbs) banned since 1970 in most countries: concentrate in food web, dioxins and furans(power generation by-products, waste incineration, bushfires -accumulate in soil and sediments.

Get access

Grade+20% off
$8 USD/m$10 USD/m
Billed $96 USD annually
Grade+
Homework Help
Study Guides
Textbook Solutions
Class Notes
Textbook Notes
Booster Class
40 Verified Answers
Class+
$8 USD/m
Billed $96 USD annually
Class+
Homework Help
Study Guides
Textbook Solutions
Class Notes
Textbook Notes
Booster Class
30 Verified Answers

Related textbook solutions