| diversity and composition of sulfate- and sulfite-reducing prokaryotes as affected by marine-freshwater gradient and sulfate availability. | sulfate- and sulfite-reducing prokaryotes (ssrp) communities play a key role in both sulfur and carbon cycles. in estuarine ecosystems, sulfate concentrations change with tides and could be limited in tidal freshwater reach or deep sediments. in a subtropical estuary of northern taiwan in december 2007, we examined the compositional changes of ssrp communities. we examined three sites: from the lower estuarine brackish-water reach (site gr and mangrove vegetation site, gm) to the upper estuarine ... | 2011 | 21785985 |
| biogeochemical characteristics of kuan-tzu-ling, chung-lun and bao-lai hot springs in southern taiwan. | hot springs are the important natural sources of geothermally heated groundwater from the earth's crust. kuan-tzu-ling (ktl), chung-lun (cl) and bao-lai (bl) are well-known hot springs in southern taiwan. fluid and mud (sediments) samples were collected from the eruption points of three hot springs for detailed biogeochemical characterization. the fluid sample displays relatively high concentrations of na(+) and cl(-) compared with k(+), mg(2+), ca(2+), no(2) (-), and so(4) (2-), suggesting a po ... | 2011 | 21879853 |