The impact of the fishery on the stock, however, is not clear due to an inadequate time series of CPUE and a lack of reliable age estimates.
This stratigraphic interpretation is preliminary and based solely on geological reasoning (i.e., stratigraphic superposition of individual units, textural variations in Facies 2 sediment and the presence or absence of dissolution features), because of an absence of reliable age data.
48 49 Our analytical approach used official life tables to predict mortality accurately but was limited by the lack of accessible and reliable age and gender specific estimates of survival by health and partnership status.
Additionally, the exact location of the reversal is important for future reliable age determinations of Paleolithic sites discovered in loess from the Lantian Basin (Zhang et al. 1978; An and Ho 1989; Zhu et al. 2015; Dennell, in press).
This is also of importance for describing growth, and consequently for making reliable age estimates of desert trees.
Preliminary experiments on sanidine standards show the reliable age results of total-fusion dating for single grains, i.e., 28.4 ± 0.5 Ma 1σσ, MSWD = 138, n = 24) for FCS sanidine, and 1.185 ± 0.004 Ma 1σσ, MSWD = 6.05, n = 26) for ACS sanidine as Quaternary age standard, within recommended values (28.294 ± 0.036 Ma and 1.193 ± 0.001 Ma, respectively).
The description of the first reliable fossil in 2007 enabled a direct calibration of the orchid phylogeny, but little attention has been paid to the potential influence of dating methodology in obtaining reliable age estimates.
The resulting ages revealed the reliable ages of ten historical and paleo-tsunami deposits.
Although it is difficult to confirm whether all samples just above the tsunami deposits contain old carbon, another depositional model (hereafter Model B) is applied to estimate the more reliable ages of tsunami deposits using only the dates below the tsunami deposits (Table 3; Fig. 5; Additional file 4: Figure S4).
While longevity studies remain a staple of model organism aging research, identification of reliable biomarkers of aging as intermediate surrogates of reduced mortality could significantly reduce the time and costs associated with aging research.
She was dependent on a daughter, who lived elsewhere, for assistance with transport to obtain medical care, but complained about the lack of reliable help in old age.
