carbon hot spots. (15) Assess legal issues of landownership in blue carbon markets, and develop guidelines to help landowners navigate the requirements of such markets. 102. National map of coastal and marine blue carbon ecosystems (a) National map The Administrator, in consultation with the interagency working group established under section 106, shall— (1) produce, update every 3 years, and maintain a national map and inventory of coastal blue carbon ecosystems including— (A) with respect to each such ecosystem— (i) the species and types of habitat in the ecosystem