Movement dynamics of large pelagic species have been problematic to resolve in modern assessments, and electronic tags offer new opportunities to resolve some of these issues.
The results of our study suggest that the use of mt genes may help inform some of the phylogenetic relationships that thus far have been problematic to resolve, as suggested by Turmel et al. (2013).
Normally, people cannot raise mistakes of law, but crimes involving property are so problematic to resolve that we allow people to say "I thought I had the right to do this" and escape liability.
The deepest splits in the placental mammalian tree have been particularly problematic to resolve (Churakov et al. 2009; Nishihara et al. 2009; Hallström and Janke 2010).
Thirdly, it may be problematic to adjust tidal volume to body weight in the presence of fibrosis-induced weight loss, but this issue has not been resolved experimentally to our knowledge.
Immediately this is problematic to me.
It was problematic to say the least.
These splits are remarkably close to each other and would prove problematic to resolve even from recent species.
However, traditional methodologies such as bulk productivity measurements are problematic for resolving C incorporation by attached cells, and in general the study of attached bacteria in aquatic ecosystems remains a challenge (Simon et al., 2002).
However, both can be problematic for resolving deep phylogenetic relationships.
Here, amino acids are classified into three groups: first, essential amino acids, which are essential to nutrition; second, functional amino acids, recently found to be important in the promotion of physiological functions; and third, dipeptides, which are used to resolve problematic features of specific free amino acids, such as their instability or insolubility.
