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Global Assessment Of Radiocarbon Isotopic Analysis For Particulate And Dissolved Organic Carbon In Riverine Systems, Ashley Tucker
Global Assessment Of Radiocarbon Isotopic Analysis For Particulate And Dissolved Organic Carbon In Riverine Systems, Ashley Tucker
Theses and Dissertations
Rivers are a significant source of particulate and dissolved organic carbon (POC, DOC) into inland waters and coastal systems and provide a fundamental linkage between the terrestrial, oceanic, and atmospheric carbon reservoirs. Recent studies have examined the relationship between the quantity and form (POC vs. DOC) of carbon delivered to the aquatic system; however, little is known about the age of POC and DOC exported and how the radiocarbon age may vary with latitude, topographic gradient, vegetation, and land use. I provide the first global synthesis of published radiocarbon values of POC and DOC (∆14C). Inclusion of DOC and POC …
"Mining" For A Reference Condition In Southern West Virginia Streams, Matthew Rouch
"Mining" For A Reference Condition In Southern West Virginia Streams, Matthew Rouch
Theses and Dissertations
Quarterly samples were used to estimate assemblage-level (all species combined) fish production within three minimally-impacted, southern West Virginia streams. The total annual fish production estimate was highest in Slaunch Fork (37.52 kg∙ha-1∙y-1), a tributary of the Tug Fork River, and lowest in Cabin Creek (10.59 kg∙ha-1∙y-1), a Guyandotte River tributary. Creek Chub Semotilus atromaculatus, Mottled Sculpin Cottus bairdii and Blacknose Dace Rhinicthys atratulus were the most abundant species among sites, accounting for >90% of all sampled individuals. Reference condition criteria were also selected and metrics calculated for each of the three …