TITLE PAGE - acumen - The University of Alabama
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Table 6. Estimates <strong>of</strong> biomass (g ash -ree dry mass [AFDM] m -2 ), production (g AFDM m -2 yr -1 ) and production:biomass ratios (P:B)<br />
from surface and cave crayfish populations. Dry weight was assumed to be 30% <strong>of</strong> wet weight and AFDM as 64% <strong>of</strong> dry mass. <strong>The</strong><br />
AFDM conversion factor was estimated using data from Orconectes australis.<br />
Habitat Species Biomass Production P:B Reference<br />
Cave Orconectes australis 0.080-0.862 0.021-0.335 0.27-0.39 This study<br />
Orconectes inermis 0.052 0.027 0.53 Weingartner, 1977<br />
Surface Orconectes virilis 0.129 0.155 1.1 Mitchell & Smock, 1991<br />
Orconectes punctimanus 0.129 0.384 Brewer et al., 2009<br />
Cambarus bartonii 0.706-1.7 0.028-0.961 0.58<br />
Huryn & Wallace, 1987b; Mitchell & Smock, 1991;<br />
Roell & Orth, 1992; Griffith et al., 1996<br />
Paranephrops planifrons 0.429-2.3 0.512-2.18 0.95-1.2 Parkyn et al., 2002<br />
Orconectes ozarkae 0.211 1.15 Brewer et al., 2009<br />
Cambarus immunis 1-6 Lydell, 1938<br />
Pacifastacus leniusculus 2.56 Mason, 1975<br />
Orconectes luteus 0.949 4.2 Brewer et al., 2009<br />
Paranephrops zealandicus 4-33 2-11 0.33-0.43 Whitmore & Huryn, 1999<br />
Various (8 species) 0.106-70 0.384-177 0.3-5.9 Momot, 1984<br />
129