PART 5_2 Chemical contaminants and ecotoxicology

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Toxic Effects • The biochemical (molecular in nature) or physiological (observed at organ and whole organism levels) changes which adversely affect individual organisms’ birth, growth or mortality rates. • Both biochemical and physiological changes could lead to behavioral (whole organism level) changes
Example • The pollutant binding to a receptor • Followed by biochemical response at both cellular and organ levels • Leading to physiological responses • Finally, behavioral changes on the individual leading to effects on the population, community and the ecosystem.
Page 1 and 2: Environmental Chemistry Part 5 Bios
Page 4 and 5: Beyond our toxin trail Is the grave
Page 6 and 7: There are also differences. Toxicol
Page 8 and 9: •At population level, response ca
Page 10 and 11: Assessment of Structural Changes ch
Page 12 and 13: Chemicals of Ecotoxicological inter
Page 14 and 15: Bioavailabiltiy The fraction of a c
Page 17: Biomagnification - where the chemic
Page 20 and 21: ECOSYSTEMS: Fate of Metals • The
Page 22 and 23: Fate of Metals • pH is very impor
Page 24 and 25: ECOSYSTEMS: Terrestrial • Mobilit
Page 26: ECOSYSTEMS: Aquatic • The ultimat
Page 29 and 30: 1. Biomarkers of exposure Biomarker
Page 31 and 32: 2. Biomarkers of Effect Biomarkers
Page 33 and 34: Biomarkers in order of decreasing s
Page 35: Biomarker interpretation • Specie
Page 39 and 40: • Binding: - Reversible vs. Irrev
Page 41 and 42: Protective biochemical response •
Page 43 and 44: Non-protective response - Binding t
Page 45 and 46: Non-protective response • Environ
Page 47 and 48: Behavioral Changes - Either or both
Page 49 and 50: Diclofenac residues as the cause of
Page 51 and 52: Some General effects of pollution o
Page 53 and 54: What is an Endocrine Disruptor “
Page 57: Hormone regulation and feedback con
Page 60: Genomic mechanisms of ED action •
Page 65 and 66: Various Classes of EDCs Flame Retar
Page 67 and 68: Bioavailability of PBDEs ‣Found i
Page 69: Health Effects of PBDEs ‣Similar
Page 72 and 73: Atrazine • A chlorotriazine herbi
Page 74 and 75: 聚氯乙烯 (PVC) 让长牙
Page 76 and 77: Tributyltin (TBT) 三丁基锡
Page 78 and 79: 许多生物对有机锡的
Page 80 and 81: Alkylphenol( 烷基酚 ) • 聚
Page 82 and 83: EDSTAC Tier 2 dose-response relatio
Page 86:
Temperature-dependent sex determina
Page 89 and 90:
III. Field studies Manipulative Obs
Page 91 and 92:
Excised microcosms are segments of
Page 94 and 95:
Biomonitoring
Page 96 and 97:
An Index of Biotic Integrity (IBI)
Page 98:
Example 1 • What will happen When
Page 105:
•Data required to conduct an ecol
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PART 5_2 Chemical contaminants and ecotoxicology

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