The southwestern tropical Pacific, part of a major pathway for waters feeding the Equatorial Undercurrent, is a region of important geochemical enrichment through land-ocean boundary exchange. Here we develop an original method based on the coupling between dynamical modeling and geochemical tracer data to identify regions of enrichment along the water pathways from the subtropics to the equato...

Two new water dispersible granular (WDG) formulations of the microbial control agent Bacillus sphaericus (strain 2362) were extensively evaluated in polluted waters against Culex quinquefasciatus in Thailand. The studies were carried out in stagnant as well as flowing waters during August 1997 to July 1998. The trail period covered both rainy and dry seasons. The two WDG formulations of B. spha...

Net-spinning trichopteran larvae are used as examples of filter-feeding stream insects to show that various species feed upon a range of particle sizes. Evolution of individual species has resulted in cropping various particle sizes of drifting stream seston. Mechanisms of how this is achieved are discussed. The evolutionary diversity of filter feeders has important consequences for stream ecos...

I ; 'LARKIN I I rkin, J. H. Problem Solving in Physics (Tech. Rep.). Group in Science and Mathematics Education, tion, University of California, Berkeley, 1977. rkin, J. H. Enriching formal knowledge: A model for learning to solve problems in physics. In J. R. Anderson (Ed.), Cognitive skills and their acquisition. Hillsdale, N.J.: Lawrence Erlbaum Associates, 1981. rkin, J. H., McDermott, J., ...

This chapter was originally published in the book Tropical Stream Ecology, published by Elsevier, and the attached copy is provided by Elsevier for the author's benefit and for the benefit of the author's institution, for non-commercial research and educational use including without limitation use in instruction at your institution, sending it to specific colleagues who you know, and providing ...