Advanced search    

Search: authors:"Tyler Wagner"

6 papers found.
Use AND, OR, NOT, +word, -word, "long phrase", (parentheses) to fine-tune your search.

Trends in global shark attacks

/ 13 Data curation: George H. Burgess. Formal analysis: Stephen R. Midway, Tyler Wagner. Methodology: Tyler Wagner, George H. Burgess. Writing ? original draft: Stephen R. Midway, Tyler Wagner ... . Writing ? review & editing: Stephen R. Midway, Tyler Wagner, George H. Burgess. 12 / 13 1. Karl SA , Castro ALF , Lopez JA , Charvet P , Burgess GH . Phylogeography and conservation of the bull shark

Spatial Variation in Nutrient and Water Color Effects on Lake Chlorophyll at Macroscales

The nutrient-water color paradigm is a framework to characterize lake trophic status by relating lake primary productivity to both nutrients and water color, the colored component of dissolved organic carbon. Total phosphorus (TP), a limiting nutrient, and water color, a strong light attenuator, influence lake chlorophyll a concentrations (CHL). But, these relationships have been...

Effects of Land Use on Lake Nutrients: The Importance of Scale, Hydrologic Connectivity, and Region

Catchment land uses, particularly agriculture and urban uses, have long been recognized as major drivers of nutrient concentrations in surface waters. However, few simple models have been developed that relate the amount of catchment land use to downstream freshwater nutrients. Nor are existing models applicable to large numbers of freshwaters across broad spatial extents such as...

Long-Term Citizen-Collected Data Reveal Geographical Patterns and Temporal Trends in Lake Water Clarity

We compiled a lake-water clarity database using publically available, citizen volunteer observations made between 1938 and 2012 across eight states in the Upper Midwest, USA. Our objectives were to determine (1) whether temporal trends in lake-water clarity existed across this large geographic area and (2) whether trends were related to the lake-specific characteristics of...

Buruli ulcer disease prevalence in Benin, West Africa: associations with land use/cover and the identification of disease clusters

Background Buruli ulcer (BU) disease, caused by infection with the environmental mycobacterium M. ulcerans, is an emerging infectious disease in many tropical and sub-tropical countries. Although vectors and modes of transmission remain unknown, it is hypothesized that the transmission of BU disease is associated with human activities in or around aquatic environments, and that...

Coordinated regulation of acid resistance in Escherichia coli

Background Enteric Escherichia coli survives the highly acidic environment of the stomach through multiple acid resistance (AR) mechanisms. The most effective system, AR2, decarboxylates externally-derived glutamate to remove cytoplasmic protons and excrete GABA. The first described system, AR1, does not require an external amino acid. Its mechanism has not been determined. The...