The Anthropocene concept brings forth the role of humans as an increasingly important force affecting natural processes in our planet and leaving an identifiable anthropogenic marker in the geological record. Archaeologists and specialists in long-term human-environment interaction agree and emphasize that the onand off-site archaeological record is concrete evidence of the extent and intensity in which people have left their mark in a geologically identifiable way (see papers in this special volume, as well as Balée and Erickson, 2006;Balter, 2013;Butzer, 1996;Certini and Scalenghe, 2011;Crumley, 1993;Graham, 1998;Kirch, 2005;Rick et al., 2013). The issue at stake is not whether the Anthropocene is valid. The relevant question is when does the Anthropocene start? If we are judging the Anthropocene as a time when people caused enough impact as to leave a mark of their presence that could serve as a global indicator of the beginning of a new era (Crutzen, 2002;Crutzen and Steffen, 2003;Crutzen and Stroemer, 2000;Steffen et al., 2007Steffen et al., , 2011Zalasiewicz et al., 2011), is the suggested date of the Industrial Revolution valid? Is it the 'Great Acceleration'? Or is it the earliest physical evidence of human agency affecting other spheres: atmosphere, geosphere, hydrosphere, biosphere (see Certini and Scalenghe, 2011;Erlandson and Braje, 2013;Foley et al., 2013;Rick et al., 2013)?In this article, the sedimentological and biotic records of Puerto Rico as an oceanic island in the Caribbean are evaluated to measure the intensity of human impact and environmental transformation through time.
Oceanic islands and human settlement: What could we expectIslands are traditionally considered sensitive to environmental and climate change, especially tropical islands where extinction of species is of serious concern (Fitzpatrick and Keegan, 2007;Rick et al., 2013). The Caribbean Islands are defined as biodiversity hotspots (Helmer et al., 2002;Myers et al., 2000), where richness in species and ecosystem diversity as well as high levels of endemism are considered highly valuable, and conservation
Por el camino verde: Long-term tropical socioecosystem dynamics and the Anthropocene as seen from Puerto Rico Isabel C Rivera-Collazo AbstractIslands are traditionally considered sensitive to environment and climate change. The Caribbean Islands are a biodiversity hotspot, where conservation efforts should be a priority. However, the archaeological record suggests that the biotic characteristics of the islands, even within nature or forests reserves, are strongly shaped by thousands of years of intense human activity. This presents an issue for conservation efforts because defining what should be preserved and what should be reconstructed is not straightforward. Using Puerto Rico as case study, this article explores how socioecosystem dynamics influenced the biotic characteristics of the island at specific archaeological periods and to what extent these processes have affected the environmental resources on the island today. C...