Crustal structure across the Costa Rican Volcanic Arc

Mining the Costa Rican Web

There is much to say about the structure and composition of a local web. Identification of authorities, topics and web communities can be used to improve search engines, change a portal design or to develop marketing strategies. The Costa Rican web was chosen as a test case for web mining analysis. After the study we obtained several descriptors of the web as well as the answers to typical ques...

Costa Rican Natural History

Magnesium Isotopes as a Tracer of Crustal Materials in Volcanic Arc Magmas in the Northern Cascade Arc

Fifteen North Cascade Arc basalts and andesites were analyzed for Mg isotopes to investigate the extent and manner of crustal contributions to this magmatic system. The δ 26Mg of these samples vary from within the range of ocean island basalts (the lightest being −0.33 ± 0.07‰) to heavier compositions (as heavy as −0.15 ± 0.06‰). The observed range in chemical and isotopic composition is simila...

Carbon Footprint Across the Coffee Supply Chain: The Case of Costa Rican Coffee

The issue of carbon emissions has been on the corporate sustainability agenda for some years. For those working in agricultural supply chains the challenges remain significant, given the diverse direct and indirect emissions occurring throughout the value chain. This study determines the carbon footprint of the supply chain of Costa Rican coffee exported to Europe, using best practice methodolo...

Panbiogeographical analysis of Costa Rican freshwater fishes.

Track analysis and Parsimony analysis of endemicity (PAE) were performed to analyze the distribution pattern of Costa Rican freshwater fishes. A basic matrix (presence/absence) was prepared using the distribution of 77 freshwater fish. The data were analyzed with CLIQUE software in order to find generalized tracks (cliques). Data also were analyzed with the software NONA and Winclada version 1....