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ดัชนี 163

Naticidae, 48 Orbiniidae, 130 plankton, 1

Neanthes, 21 organelle, 64 polychaetes, 11, 12, 16,
Nectochaetes, 143 organic enrichment, 45, 45, 154

Nekton, 1 134 Polymorphanisus, 39

nematocyst, 71 osculum, 66, 78, 85 Pomacea, 28, 36
nematodes, 21, 45, 46, Osmoregulation, 42 Ponar grab, 106, 107

70, 124 ostia, 66, 78 pond snail, 5

nemerteans, 21 Ovassiminea, 48, 70, 123, pool zone, 32
Neoepisesarma, 19 129 pore water, 75

Nephtyidae, 36, 130, 131 oyster, 5, 13 porocytes, 66

Nephtys, 36, 46 Palaemonidae, 28, 37 post larvae, 52
Nereididae, 12, 20, 21, parapodia, 20, 77, 79 Potamididae, 25

70, 71, 72, 77, 134, Parasesarma lanchesteri, Practical Salinity Unit, 40

141, 149 11, 16 predators, 5, 45, 70, 95
Nereis, 12, 20, 21, 79 Parathelphusidae, 37, preference rate, 20

Nerite shell, 18 144 primary producers, 5, 7

Neritidae, 47 peanut worms, 25 primary production, 9
Neritina, 17, 18 Pectinariidae, 25 Prionospio, 12, 82, 86,

Neuston, 1 pedicels, 77 87, 135, 136

non-pumpers, 53, 81 penetration anchor, 76 proboscis, 20
normal community, 130 Perinereis nuntia, 134, Progomphus, 39

Notomastus, 12, 17 142 Prostragladin, 142

Nucella, 21 Perisesarma, 17, 19, 129 protozoa, 1, 64
nucleaus, 64 permanent meiofauna, Pseudodon, 5

observation, 111 17 psu, 40, 42, 83, 143

Odonata, 36, 39 Petersen grab, 104, 105, pumpers, 53, 81
omnivores, 9, 72, 95 106 pursuit hunters, 71

Onuphidae, 16, 24 Phleger corer, 109 Pygospio, 15, 25

opportunistic feeders, 53, Piaster ochraceus, 75 quadrat, 97, 112
69, 72 Pilsbryoconcha, 5, 29, 37 Qualitative, 97, 103

opportunistic species, Pinna, 17 Quantitative, 97, 109

124 pinnules, 22, 82 radiolarian, 1