Bioavailable iron in oligotrophic Lake Superior assessed using biological reporters
نویسندگان
چکیده
منابع مشابه
Unusual bacterioplankton community structure in ultra-oligotrophic Crater Lake
The bacterioplankton assemblage in Crater Lake, Oregon (U.S.A.), is different from communities found in other oxygenated lakes, as demonstrated by four small subunit ribosomal ribonucleic acid (SSU rRNA) gene clone libraries and oligonucleotide probe hybridization to RNA from lake water. Populations in the euphotic zone of this deep (589 m), oligotrophic caldera lake are dominated by two phylog...
متن کاملAnaerobic oxidation of methane in sediments of Lake Constance, an oligotrophic freshwater lake.
Anaerobic oxidation of methane (AOM) with sulfate as terminal electron acceptor has been reported for various environments, including freshwater habitats, and also, nitrate and nitrite were recently shown to act as electron acceptors for methane oxidation in eutrophic freshwater habitats. Radiotracer experiments with sediment material of Lake Constance, an oligotrophic freshwater lake, were per...
متن کاملDetermination of Bioavailable Fe in Lake Erie Using a Luminescent Cyanobacterial Bioreporter
Low Fe bioavailability has been suggested as a potential constraint on primary production in the Great Lakes. Here we report on the use of a cyanobacterial bioreporter to assess available Fe in Lake Erie during summer and fall field seasons in 2001–02. Bioreporter luminescence was derived from a luciferase reporter controlled by iron-responsive promoter element isiAB. Filtered (< 0.2 μm) water ...
متن کاملLake Level Fluctuations Boost Toxic Cyanobacterial “Oligotrophic Blooms”
Global warming has been shown to strongly influence inland water systems, producing noticeable increases in water temperatures. Rising temperatures, especially when combined with widespread nutrient pollution, directly favour the growth of toxic cyanobacteria. Climate changes have also altered natural water level fluctuations increasing the probability of extreme events as dry periods followed ...
متن کاملModeling nearshore-offshore exchange in Lake Superior
Lake Superior's ecosystem includes distinct nearshore and offshore food webs linked by hydrodynamic processes that transport water and tracers along and across shore. The scales over which these processes occur and their sensitivity to increasing summer surface temperatures are not well understood. This study investigated horizontal mixing between nearshore and offshore areas of Lake Superior o...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Plankton Research
سال: 2005
ISSN: 1464-3774,0142-7873
DOI: 10.1093/plankt/fbi070