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Propriedades físico-químicas e biológicas do lago Macferson Allahabad

Propriedades físico-químicas e biológicas do lago Macferson Allahabad

Abhishek James / Ganesh Shanker Mishra

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Editorial:
KS OmniScriptum Publishing
Año de edición:
2024
Materia
Ciencia: cuestiones generales
ISBN:
9786207854387
43,69 €
IVA incluido
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A poluição afecta a qualidade da água em lagos e outros recursos de água doce em todo o mundo. Pode assumir muitas formas, provenientes de fontes industriais, agrícolas ou municipais; alguns exemplos comuns incluem pesticidas, herbicidas, esgotos e lixo. Os lagos contêm frequentemente elevados níveis de poluição relativamente às paisagens e ao ambiente circundantes. Os rios e ribeiros drenam os poluentes da paisagem, que se concentram nos lagos e noutras massas de água. As espécies aquáticas, como os peixes, podem ter um teor de contaminantes extremamente elevado, uma vez que alguns poluentes não se dissolvem nem se diluem facilmente na água, sendo absorvidos pelos organismos. Algumas espécies de organismos aquáticos são particularmente sensíveis à poluição; são utilizadas como indicadores de poluição e designadas por bioindicadores. Como os lagos drenam uma grande paisagem circundante, reflectem os processos e acções que operam à sua volta. Quando são derramados produtos químicos, estes podem escoar para cursos de água próximos e ser transportados para os lagos a jusante.

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