If fishing technology or gear selectivity depends on the relative age composition of the mature fish stock, fixed harvest proportions, derived from catchability and bycatch coefficients, is not valid anymore.
This contrasts with estimated harvest proportions for the hunting seasons starting in 1999 and 2000 [27]; those estimates suggest that 13% of juvenile scaup were harvested in the Atlantic flyway, 49% in the Mississippi flyway, 24% in the Central flyway, and the remaining 13% in the Pacific flyway.
When creating a feeding-ground reserve, excluding effort displacement by setting the harvest ratio to be a proportion of the harvestable biomass in the harvested area only (thus not including the biomass inside the reserve), results in a slight reduction of fisheries-induced evolution, but only for low harvest ratios and for reserves of small to medium size (Appendix C).
The range in the coefficients of variation for lymph-node harvest (0·07 0·61), proportion of patients with locoregional cancer recurrence (1·1 46·2%), and in-hospital mortality (0 10%) was wide.
Rather than being harvested in proportion to the species' breeding population abundance, more juveniles were harvested from the central and southern regions of the boreal forest and the Prairie-Parkland than expected, with fewer juveniles from the northwestern boreal forest.
The extent to which PGT diminishes IVF efficiency as a function of the IVF protocol, age of the mother, number of eggs harvested, and proportion of affected embryos has not been extensively investigated.
We modeled the influence of different rates of harvest and proportions of landscape dedicated to un-hunted reserves on population persistence, population size, social dynamics, and hunting yields of red howler monkeys.
Logging harvests a proportion ρ s of trees of species s with a dbh ≥d s.
Harvest seed proportions were predicted with conservative (20%) and realistic (2%) panmictic out-crossing rates [38] and fecundity ratios between six-and two-rowed plants of 1.5 and 2.0 [13].
Logging harvests a proportion ρ s of trees of species s with a dbh ≥ d s.
