Journal Title
Title of Journal: Limnology
|
|
|
|
|
|
|
|
|
|
Authors: Yuko Sugiyama Patrick G Hatcher Rachel L Sleighter Tomoyo Suzuki Chizuru Wada Tetsu Kumagai Osamu Mitamura Toshiya Katano Shinichi Nakano Yuji Tanaka Valentin V Drucker Vladimir A Fialkov Masahito Sugiyama
Publish Date: 2014/02/15
Volume: 15, Issue: 2, Pages: 127-139
Abstract
To elucidate the molecular characteristics of dissolved organic matter DOM in Lake Baikal 3D excitationemission matrix spectroscopy and Fourier transform ion cyclotron resonance mass spectrometry FTICR MS were employed From the linear relationship between the humiclike peak intensities excitation/emission = 305 nm/430 nm and dissolved organic carbon DOC concentrations in the water samples extending from the Selenga River mouth to offshore central lake in the south basin allochthonous DOM appeared to be a main contributor to the DOC concentrations However DOM with fewer fluorophores dominated in the South Basin of the lake at stable DOC concentrations of ca 084 mg C l−1 Meanwhile FTICR MS analysis and subsequent principal component analysis across the transect revealed a transition of compounds with high Hdeficiency aromatic to compounds with low Hdeficiency aliphatic that dominate pelagic openlake water We believe that this molecular change is induced by photodegradation which mainly alters aromatic compoundsWe are grateful to the captain and crew of the R/V Treskov for assistance with sample collection We are also grateful to S Hatcher College of Sciences Major Instrumentation Cluster Facility Old Dominion University for assistance with FT ICRMS and Dr K Hayakawa Lake Biwa Environmental Research Institute for assistance with 3D EEMs measurements The work was also supported by the National Science Foundation CHE0089147 USA and GrantsinAid for Scientific Research from the Ministry of Education Culture Sports Science and Technology MEXT Japan no 18255001
Keywords:
.
|
Other Papers In This Journal:
- Increased precipitation during the Little Ice Age in northern Taiwan inferred from diatoms and geochemistry in a sediment core from a subalpine lake
- Agononida Baba and de saint Laurent, 1996 (Crustacea: Decapoda: Anomura: Galatheoidea: Munididae) from Chinese waters
- Anomalies of bromine in the estuarine sediments as a signal of floods associated with typhoons
- Environmental variability in Lake Naivasha, Kenya, over the last two centuries
- A new species of Nassarius (Gastropoda: Nassariidae) from the western Pacific Ocean
- Breeding and mass scale rearing of clownfish Amphiprion percula : feeding and rearing in brackishwater
- Depth distribution of chironomids and an evaluation of site-specific and regional lake-depth inference models: a good model gone bad?
- Molecular phylogenetic analysis of dinoflagellate Scrippsiella trochoidea isolated from the East Asian waters
- Freshwater Cladocera (Crustacea, Branchiopoda) in Lake Tonle Sap and its adjacent waters in Cambodia
- Morphometric and chemical response of two contrasting lake systems to modern climate change
- Calcium levels in Daphnia ephippia cannot provide a useful paleolimnological indicator of historical lakewater Ca concentrations
- Potential implications of differential preservation of testate amoeba shells for paleoenvironmental reconstruction in peatlands
- Influences of sea ice on eastern Bering Sea phytoplankton
- Intraregional variability in chironomid-inferred temperature estimates and the influence of river inundations on lacustrine chironomid assemblages
- Spatial distribution of epiphytic chironomid larvae in a shallow macrophyte-dominated lake: effect of macrophyte species and food resources
- Genome-wide mining, characterization, and development of microsatellite markers in Marsupenaeus japonicus by genome survey sequencing
- Relationship between river water quality and land use in a small river basin running through the urbanizing area of Central Japan
- Cell cycles and proliferation patterns in Haematococcus pluvialis
- A 2000-year record of copper pollution in South China Sea derived from seabird excrements: a potential indicator for copper production and civilization of China
- Climate-driven changes in water level: a decadal scale multi-proxy study recording the 8.2-ka event and ecosystem responses in Lake Sarup (Denmark)
- Influence of dietary n-3 LC-PUFA on growth, nutritional composition and immune function in marine fish Sebastiscus marmoratus
- Sewage pollution in Negril, Jamaica: effects on nutrition and ecology of coral reef macroalgae
- Effects of different phosphorus concentrations and N/P ratios on the growth and photosynthetic characteristics of Skeletonema costatum and Prorocentrum donghaiense
- An overview of late Holocene climate and environmental change inferred from Arctic lake sediment
- Extracellular phosphatases produced by phytoplankton and other sources in shallow eutrophic lakes (Wuhan, China): taxon-specific versus bulk activity
- Three new records of deep-water goniasterids (Echinodermata: Asteroidea: Goniasteridae) from China seas
- Environmental magnetic studies of sediment cores from Gonghai Lake: implications for monsoon evolution in North China during the late glacial and Holocene
- Hybrids between olive flounder Paralichthys olivaceus and stone flounder Kareius bicoloratus : karyotype, allozyme and RAPD analyses
- Holocene climate change and carbon cycling in a groundwater-fed, boreal forest lake: Dune Lake, Alaska
- Toxic effects of Karenia mikimotoi extracts on mammalian cells
- The community structure and seasonal dynamics of plankton in Bange Lake, northern Tibet, China
- Growth characteristics and growth modeling of Microcystis aeruginosa and Planktothrix agardhii under iron limitation
- Impact of brine acidification on hatchability, survival and reproduction of Artemia parthenogenetica and Artemia franciscana in salt ponds, Bohai Bay, China
- Quantitative comparison of the expression of myogenic regulatory factors in flounder ( Paralichthys olivaceus ) embryos and adult tissues
- Phylogenetic analysis of manganese-oxidizing fungi isolated from manganese-rich aquatic environments in Hokkaido, Japan
- Seasonal variability of Kuroshio intrusion northeast of Taiwan Island as revealed by self-organizing map
- Sedimentary pellets as an ice-cover proxy in a High Arctic ice-covered lake
- Ecology of macrozoobenthic communities in two plateau lakes of Southwest China
- Ultrastructural observations on sporogenesis of Myxobolus Kwangsiensis Hsieh, Gong & Xiao from the kidney of dace Labeo rohita
- Strategy of photo-protection in phytoplankton assemblages in the Kongsfjorden, Svalbard, Arctic
- Seasonal variability of Holocene climate: a palaeolimnological study on varved sediments in Lake Jues (Harz Mountains, Germany)
|