Haber-Bosch process, 460
Habitat, 236, 443, 487
Haemophilus aegyptius, 352tab, 377
Haemophilus influenzae, 249tab, 344tab, 352tab, 377,
380tab
Haemopis, 517tab
Hagfish, 167
Hair, 170
Haldane, 33
Haldane equation for CO, 729
Haldane equation for substrate inhibition, 94, 338
Half-life, 89, 759
Half-saturation coefficient (K
s
), 322–325
Haliaeetus leucocephalus, 573tab, 813
Haliscomenobacter hydrossis, 229fig, 243tab, 265,
612tab
Halobacterium, 266tab, 267
Halocarbons, as greenhouse gases, 456
Halogenated organics, 819
Halophiles, 241, 225, 226, 292tab
Halotolerant, 226, 261
Hamburg, Germany, and cholera, 359–360
Handwashing, 378
Hansen, Gerhard Henrik Armauer, 345
Hantavirus, 287tab, 351tab
Hantavirus pulmonary syndrome (HPS), 351tab,
371
Haploid cells, 76
Hardness, and toxicity, 709, 710fig
Hazard assessment, 842
Hazard index, 846
Health risk assessment, 842
Heart, 193
Heart disease, and Chlamydia, 263
Heart, hormones, 187tab
Heather, and mycorrhyzae, 285
Heat (in animal reproduction), 212
Heat of vaporization, 41tab
Heat, product inhibition (high temperature), 339
Heavy metals, 803
as inhibitors, 339
Helicobacter, 249tab, 258
Helicobacter pylori, 258, 344tab, 352tab
Heliobacterium, 259tab, 260
and nitrogen fixation, 417
Helobdella stagnalis, 535tab
Helonias bullata, 574tab
Helper T cell (t
h
), 196
Heme, 192
Hemichordata, 157tab
Hemoglobin, 191, 192fig
Hemolysis, 196
Hemophilia, 193
Hemorrhage, 721tab
Hemorrhagic fever, dengue, 350tab, 378
Henle, J., 345
Henneguya, 515tab
Henry’s constant, 736, 856
Hepadnaviridae, 287tab, 351tab
Heparin, 174
Hepatitis, 288, 345fig
Hepatitis A, 287tab, 348, 351tab, 362, 367, 378, 381tab
Hepatitis B, 287tab, 351tab, 378, 380tab
Hepatitis B immune globulin (HBIG), 381tab
Hepatophyta, 144tab
Herbivores, 446
Heredity, 116
Hermaphrodites, 157
Herpes, 288
Herpes simplex, 287tab
Herpes simplex type 1 virus, 350tab
Herpes simplex type 2 virus, 351tab, 376
Herpesviridae, 287tab, 350tab, 351tab, 352tab
Herpetosiphonales, 243tab
Herrings, 518tab
Heterocysts, 246, 248fig, 419
Heterospilus prosopidis, 482fig
Heterotroph(s), 29, 155, 224tab, 241, 340
nitrification, 423–424
succession, 488
Heterotrophic plate count (HPC), 384
Heterozygosity and inbreeding, 139
Heterozygous, 117
Hexadecane, use by sulfate reducing bacteria, 431
Hexagenia bilineata, 791tab
Hexagenia limbata, 791tab
Hexamita, in phylogenetic tree, 241fig
High-energy radiation, 704
High G þ C Firmicutes, 258, 259, 262
High performance liquid chromatography (HPLC),
398
Hill’s criteria, 801tab
Hirudinea, 161, 517tab
Histamine, 174
Histidine, 52–53tab, 799
Histological toxic effects, 720
Histones, 123
Histoplasma, 280tab, 283, 368
Histoplasma capsulatum, 283, 352tab, 371
Histoplasmosis, 283–284, 352tab, 371
HIV, see Human immunodeficiency virus
Hockey stick, for spread plates, 306
Hoffmann, 347tab
Holdfast, 232
Holism/holistic, 3, 16
Holoferax, 241fig
Home-canned foods, and foodborne disease, 365tab
Home range, 490
Homeostasis, 184, 207
Homo erectus, 171
Homo habilis, 171
Homo sapiens, 27, 28tab, 171, 173, 241fig
Homozygous, 117
Honey, and botulism, 365
904 INDEX