English to Russian Other Environment & Ecology

Антарктика
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Those sites with existing site guidelines largely still reflected the information presented in those guidelines, although some required more amendment than others, especially those that had not been reviewed in some time and where concentrations of wildlife across the site would have shifted, but it should be supported by scientific evidence.
The team decided it was necessary to amend the guidelines of all the sites visited, including some substantial changes and some presentational to aid with consistency.

Не могу понять конец предложения: "some presentational to aid with consistency"

Спасибо.