The measure also finances some of the most significant conservation and environmental programs in recent years.
Crossrail chief executive Andrew Wolstenholme said: "Crossrail has helped deliver one of Europe's most significant conservation projects on Wallasea Island.
All the more reason to be grateful for the significant conservation efforts currently ongoing in the Bronx.
Dr Thomas Lacher, of Texas A&M University, said: "The high level of threat among lemurs is particularly troubling and calls for significant conservation action.
WWF says the awareness and funding generated by Earth Hour has led to several significant conservation successes in the past few years.
Energy Star labels, which show comparative efficiency ratings, can be found on more than 50 kinds of products, and the program's supporters argue that it achieves real and significant conservation, even if exact numbers cannot be nailed down.
Norway notes that in the Norwegian Arctic and Russia, polar bears are protected from all forms of harvest except problem or defence kills, although poaching is, apparently, a significant conservation issue in Russia.
As long ago as 2012, MPs and peers decided that "doing nothing was not an option" and "unless significant conservation work were to be undertaken, major, irreversible damage could be done to the building".
Therefore, terrestrial orchids present significant conservation challenges.
It is likely that PLA will represent a significant conservation issue due to its instability.
However, stump harvesting may pose significant conservation risks for saproxylic organisms that occur in residual deadwood.
