324
SUBJECT INDEX
X
XystiCua audax, 271
Y
Yates’ correction, 8
Yeasts, 118
Yellow Flag, 7
Yorkshire, 12, 17
Z
Zapua, 84
Zooplankton, 118, 120, 145, 152,
189
carnivores, 118, 167, 177, 183, 184,
feeding of, 182-186
fertilization experiments, 182
food sources, 186-188
food requirements, 188-189
grazing of, 160-168
herbivores, 118, 161, 165, 177, 179,
180, 184, 189
rates of production, 178-182
standing crop, 168-178
Zygoribatula rostrata, 110
185, 189
168Zostera, 119