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Niche Partitioning Of Low-Light Adapted Prochlorococcus Subecotypes Across Oceanographic Gradients Of The North Pacific Subtropical Front, Anne W. Thompson, Kathleen Kouba, Nathan A. Ahlgren 2021 Portland State University

Niche Partitioning Of Low-Light Adapted Prochlorococcus Subecotypes Across Oceanographic Gradients Of The North Pacific Subtropical Front, Anne W. Thompson, Kathleen Kouba, Nathan A. Ahlgren

Biology Faculty Publications and Presentations

The cyanobacterium Prochlorococcus is the most abundant photosynthetic cell on Earth and contributes to global ocean carbon cycling and food webs. Prochlorococcus is known for its extensive diversity that falls into two groups of ecotypes, the low‐light (LL) and high‐light (HL) adapted ecotypes. Previous work has shown niche partitioning of the very abundant HL adapted ecotypes and subecotypes across oceanographic gradients including temperature, nutrients, and day length. However, niche partitioning of subecotypes within the LL adapted ecotypes has not been studied as well because they are less abundant and less accessible than surface, HL populations. Through high‐throughput ...


Thermal Acclimation Of Tropical Coral Reef Fishes To Global Heat Waves, Jacob L. Johansen, Lauren E. Nadler, Adam Habary, Alyssa J. Bowden, Jodie Rummer 2021 University of Hawaii, Kaneohe, James Cook University

Thermal Acclimation Of Tropical Coral Reef Fishes To Global Heat Waves, Jacob L. Johansen, Lauren E. Nadler, Adam Habary, Alyssa J. Bowden, Jodie Rummer

Marine & Environmental Sciences Faculty Articles

As climate-driven heat waves become more frequent and intense, there is increasing urgency to understand how thermally sensitive species are responding. Acute heating events lasting days to months may elicit acclimation responses to improve performance and survival. However, the coordination of acclimation responses remains largely unknown for most stenothermal species. We documented the chronology of 18 metabolic and cardiorespiratory changes that occur in the gills, blood, spleen, and muscles when tropical coral reef fishes are thermally stressed (+3.0°C above ambient). Using representative coral reef fishes (Caesio cuning and Cheilodipterus quinquelineatus) separated by >100 million years of evolution and ...


The Effect Of Barometric Pressure, Temperature, And Precipitation On Preterm Labor In Expecting Women In South Carolina, Allison K. Fletcher 2021 Chapin High School

The Effect Of Barometric Pressure, Temperature, And Precipitation On Preterm Labor In Expecting Women In South Carolina, Allison K. Fletcher

Journal of the South Carolina Academy of Science

Each year, approximately 9.9% of infants in the United States are born prematurely at less than 37 weeks of gestation with unidentified causes. From 2014 to 2016, the total preterm birth rate rose 3%, and late preterm birth rates rose almost 4%. One source of preterm labor that has been examined in recent years is its potential correlation with meteorological phenomena, including barometric pressure, temperature, and precipitation. In September of 2019, birth data recording 322 deliveries from two South Carolina hospitals was collected along with weather data on the given dates. The changes in temperature, barometric pressure, and precipitation ...


Evaluating The Use Of Marine Protected Areas By Endangered Species: A Habitat Selection Approach, Kelsey E. Roberts, Brian J. Smith, Derek Burkholder, Kristen M. Hart 2021 U.S. Geological Survey; Stony Brook University

Evaluating The Use Of Marine Protected Areas By Endangered Species: A Habitat Selection Approach, Kelsey E. Roberts, Brian J. Smith, Derek Burkholder, Kristen M. Hart

Marine & Environmental Sciences Faculty Articles

1. Optimizing the design of marine protected area (MPA) networks for the conservation of migratory marine species and their habitats involves a suite of important considerations, such as appropriate scale requirements and the distribution of anthropogenic impacts. Often, a fundamental component of the conservation planning process is delineating areas of high use or high biodiversity within a region of interest.

2. However, basing conservation strategies off merely the number of individuals in an ecosystem is outdated and potentially subject to arbitrary thresholds. To be effective at protecting marine megafauna, MPAs would ideally encompass habitats used by focal species. Through satellite-tracking ...


Odu To Lead Coastal Virginia Consortium, Sherry DiBarri 2021 Old Dominion University

Odu To Lead Coastal Virginia Consortium, Sherry Dibarri

News Items

No abstract provided.


Professors Study Evacuation Practices, Marcus Coles 2021 Old Dominion University

Professors Study Evacuation Practices, Marcus Coles

News Items

No abstract provided.


Effects Of Reduced Shoreline Erosion On Chesapeake Bay Water Clarity, Jessica S. Turner, Pierre St-Laurent, Marjorie A.M. Friedrichs, Carl T. Friedrichs 2021 Virginia Institute of Marine Science

Effects Of Reduced Shoreline Erosion On Chesapeake Bay Water Clarity, Jessica S. Turner, Pierre St-Laurent, Marjorie A.M. Friedrichs, Carl T. Friedrichs

VIMS Articles

Shoreline erosion supplies sediments to estuaries and coastal waters, influencing water clarity and primary production. Globally, shoreline erosion sediment inputs are changing with anthropogenic alteration of coastlines in populated regions. Chesapeake Bay, a prime example of such a system where shoreline erosion accounts for a large proportion of sediments entering the estuary, serves here as a case study for investigating the effects of changing sediment inputs on water clarity. Long-term increases in shoreline armoring have contributed to decreased erosional sediment inputs to the estuary, changing the composition of suspended particles in surface waters. This study examined the impact of shoreline ...


Autonomous In Situ Calibration Of Ion‐Sensitive Field Effect Transistor Ph Sensors, Philip J. Bresnahan, Yuichiro Takeshita, Taylor Wirth, Todd R. Martz, Tyler Cyronak, Rebecca Albright, Kennedy Wolfe, Joseph K. Warren, Keaton Mertz 2021 University of North Carolina at Wilmington

Autonomous In Situ Calibration Of Ion‐Sensitive Field Effect Transistor Ph Sensors, Philip J. Bresnahan, Yuichiro Takeshita, Taylor Wirth, Todd R. Martz, Tyler Cyronak, Rebecca Albright, Kennedy Wolfe, Joseph K. Warren, Keaton Mertz

Marine & Environmental Sciences Faculty Articles

Ion‐sensitive field effect transistor‐based pH sensors have been shown to perform well in high frequency and long‐term ocean sampling regimes. The Honeywell Durafet is widely used due to its stability, fast response, and characterization over a large range of oceanic conditions. However, potentiometric pH monitoring is inherently complicated by the fact that the sensors require careful calibration. Offsets in calibration coefficients have been observed when comparing laboratory to field‐based calibrations and prior work has led to the recommendation that an in situ calibration be performed based on comparison to discrete samples. Here, we describe our work ...


Weather And Climate Summary And Forecast: January 2021 Report, Gregory V. Jones 2021 Linfield University

Weather And Climate Summary And Forecast: January 2021 Report, Gregory V. Jones

Linfield University Wine Studies Reports

This report provides a summary of the weather and climate forecast for January 2021. It includes forecast information specific to the Pacific Northwest and the western United States, as well as forecast information for other portions of the United States and abroad.


Arctic Observations And Numerical Simulations Of Surface Wind Effects On Multi-Angle Snowflake Camera Measurements, Kyle E. Fitch, Chaoxun Hang, Ahmad Talaei, Timothy Garrett 2021 Air Force Institute of Technology

Arctic Observations And Numerical Simulations Of Surface Wind Effects On Multi-Angle Snowflake Camera Measurements, Kyle E. Fitch, Chaoxun Hang, Ahmad Talaei, Timothy Garrett

Faculty Publications

Ground-based measurements of frozen precipitation are heavily influenced by interactions of surface winds with gauge-shield geometry. The Multi-Angle Snowflake Camera (MASC), which photographs hydrometeors in free-fall from three different angles while simultaneously measuring their fall speed, has been used in the field at multiple midlatitude and polar locations both with and without wind shielding. Here, we present an analysis of Arctic field observations – with and without a Belfort double Alter shield – and compare the results to computational fluid dynamics (CFD) simulations of the airflow and corresponding particle trajectories around the unshielded MASC. MASC-measured fall speeds compare well with Ka-band Atmospheric ...


Heat Stress During Larval Stages On Coral Survivorship For M. Capitata, Sarah Woo 2021 Claremont Colleges

Heat Stress During Larval Stages On Coral Survivorship For M. Capitata, Sarah Woo

Pitzer Senior Theses

Very little is known about how heat stress during larvae stages effect larvae survivorship, early coral recruit settlement, and later stage coral survivorship. We focused on determining how heat stress during larvae stages effected Montipora capitata survivorship over time. After thermally stressing larvae, we asked how many larvae survived the treatment, how the treatment affected settlement, how many larvae survived the heat treatment but did not settle, and later stage coral survivorship experienced residual effects from the heat stress treatment. We exposed coral larvae to ambient seawater temperatures at 30°C and heated seawater temperatures to 34°C for an ...


Vintage 2020: Rogue Valley Reference Vineyard Report, Gregory V. Jones 2021 Linfield University

Vintage 2020: Rogue Valley Reference Vineyard Report, Gregory V. Jones

Linfield University Wine Studies Reports

This report describes the impacts of climate and phenology on vintage for the Rogue Valley in Oregon in 2020. A mild and dry winter in 2019-20 was followed by a dry growing season continuing the ongoing drought concerns for Oregon and the majority of the western US. The spring was relatively cool with mild frosts into early May, then followed by wide swings between early season heat then cool, wet conditions leading up to and during flowering. The result was widespread issues with fruit set leading to generally high amounts of shatter, smaller berries and clusters for many in the ...


Vintage Report 2020: North Willamette Valley, Gregory V. Jones 2021 Linfield University

Vintage Report 2020: North Willamette Valley, Gregory V. Jones

Linfield University Wine Studies Reports

This report describes the impacts of climate and phenology on vintage for the North Willamette Valley in Oregon in 2020. A mild and dry winter in 2019-20 was followed by a dry growing season continuing the ongoing drought concerns for Oregon and the majority of the western US. The spring was relatively cool with mild frosts in early April, then followed by wide swings between early season heat then cool, wet conditions leading up to and during flowering. The result was widespread issues with fruit set leading to generally high amounts of shatter, smaller berries and clusters for many in ...


Improving Publicly Available Corn Nitrogen Rate Recommendation Tools With Soil And Weather Measurements, Curtis J. Ransom, Newell R. Kitchen, John E. Sawyer, James J. Camberato, Paul R. Carter, Richard B. Ferguson, Fabián G. Fernández, David W. Franzen, Carrie A. M. Laboski, D. Brenton Myers, Emerson D. Nafziger, John F. Shanahan 2021 U.S. Department of Agriculture

Improving Publicly Available Corn Nitrogen Rate Recommendation Tools With Soil And Weather Measurements, Curtis J. Ransom, Newell R. Kitchen, John E. Sawyer, James J. Camberato, Paul R. Carter, Richard B. Ferguson, Fabián G. Fernández, David W. Franzen, Carrie A. M. Laboski, D. Brenton Myers, Emerson D. Nafziger, John F. Shanahan

Agronomy Publications

Improving corn (Zea mays L.) N fertilizer rate recommendation tools is necessary for improving farmers’ profits and minimizing N pollution. Research has repeatedly shown that weather and soil factors influence available N and crop N need. Adjusting available corn N recommendation tools with soil and weather measurements could improve farmers’ ability to manage N. The aim of this research was to improve publicly available N recommendation tools with site‐specific soil and weather measurements. Information from 49 site‐years of N response trials in the U.S. Midwest was used to evaluate 21 rate recommendation tools for a single (at ...


Water Quality Monitoring In The Upper Poteau River Watershed, Abbie Lasater, Brian E. Haggard 2021 University of Arkansas, Fayetteville

Water Quality Monitoring In The Upper Poteau River Watershed, Abbie Lasater, Brian E. Haggard

Technical Reports

The Upper Poteau River Watershed (UPRW) has been listed as a priority watershed in Arkansas since 1998 due to nutrient and sediment enrichment from point and nonpoint sources (NPS). According to the Arkansas NPS pollution management plan, the goals for the UPRW are to reduce pollutant levels that will restore all designates uses and target subwatersheds where implementation of management practices can have the greatest impact. Over the last several years, many 319(h) projects have been implemented and point sources have been reduced in order to improve water quality in the UPRW. The purpose of this study was to ...


Temperature Variance Portends And Indicates The Extent Of Abrupt Climate Shifts, Christine Ramadhin, Chuixiang Yi, George Hendrey 2021 CUNY Queens College

Temperature Variance Portends And Indicates The Extent Of Abrupt Climate Shifts, Christine Ramadhin, Chuixiang Yi, George Hendrey

Publications and Research

Here, we show a discernable increase in temperature variance before a glacial termination by both the Ansari-Bradley test and the moving variance methods plus introduce the idea that there is a correlation between the peak variance and peak temperature increase. The behavior of temperature variance shows potential as a useful tool in analyzing time series data of Earth systems to assess the risk and extent of an upcoming abrupt climate transition.


Unexpected Role Of Communities Colonizing Dead Coral Substrate In The Calcification Of Coral Reefs, Manoela Romanó de Orte, David A. Koweek, Tyler Cyronak, Yuichiro Takeshita, Alyssa Griffin, Kennedy Wolfe, Alina Szmant, Robert Whitehead, Rebecca Albright, Ken Caldeira 2021 Carnegie Institution of Washington

Unexpected Role Of Communities Colonizing Dead Coral Substrate In The Calcification Of Coral Reefs, Manoela Romanó De Orte, David A. Koweek, Tyler Cyronak, Yuichiro Takeshita, Alyssa Griffin, Kennedy Wolfe, Alina Szmant, Robert Whitehead, Rebecca Albright, Ken Caldeira

Marine & Environmental Sciences Faculty Articles

Global and local anthropogenic stressors such as climate change, acidification, overfishing, and pollution are expected to shift the benthic community composition of coral reefs from dominance by calcifying organisms to dominance by non-calcifying algae. These changes could reduce the ability of coral reef ecosystems to maintain positive net calcium carbonate accretion. However, relationships between community composition and calcification rates remain unclear. We performed field experiments to quantify the metabolic rates of the two most dominant coral reef substrate types, live coral and dead coral substrate colonized by a mixed algal assemblage, using a novel underwater respirometer. Our results revealed that ...


Projected Changes In Temperature And Precipitation Over The United States, Central America, And The Caribbean In Cmip6 Gcms, Mansour Almazroui, M. Nazrul Islam, Fahad Saeed, Sajjad Saeed, Muhammad Ismail, Muhammad Azhar Ehsan, Ismaila Diallo, Enda O’Brien, Moetasim Ashfaq, Daniel Martínez-Castro, Tereza Cavazos, Ruth Cerezo-Mota, Michael K. Tippett, William J. Gutowski Jr., Eric J. Alfaro, Hugo G. Hidalgo, Alejandro Vichot-Llano, Jayaka D. Campbell, Shahzad Kamil, Irfan Ur Rashid, Mouhamadou Bamba Sylla, Tannecia Stephenson, Michael Taylor, Mathew Barlow 2021 King Abdulaziz University

Projected Changes In Temperature And Precipitation Over The United States, Central America, And The Caribbean In Cmip6 Gcms, Mansour Almazroui, M. Nazrul Islam, Fahad Saeed, Sajjad Saeed, Muhammad Ismail, Muhammad Azhar Ehsan, Ismaila Diallo, Enda O’Brien, Moetasim Ashfaq, Daniel Martínez-Castro, Tereza Cavazos, Ruth Cerezo-Mota, Michael K. Tippett, William J. Gutowski Jr., Eric J. Alfaro, Hugo G. Hidalgo, Alejandro Vichot-Llano, Jayaka D. Campbell, Shahzad Kamil, Irfan Ur Rashid, Mouhamadou Bamba Sylla, Tannecia Stephenson, Michael Taylor, Mathew Barlow

Geological and Atmospheric Sciences Publications

The Coupled Model Intercomparison Project Phase 6 (CMIP6) dataset is used to examine projected changes in temperature and precipitation over the United States (U.S.), Central America and the Caribbean. The changes are computed using an ensemble of 31 models for three future time slices (2021–2040, 2041–2060, and 2080–2099) relative to the reference period (1995–2014) under three Shared Socioeconomic Pathways (SSPs; SSP1-2.6, SSP2-4.5, and SSP5-8.5). The CMIP6 ensemble reproduces the observed annual cycle and distribution of mean annual temperature and precipitation with biases between − 0.93 and 1.27 °C and − 37.90 ...


Quantifying Model Structural Uncertainty Using Airborne Electromagnetic Data, Burke J. Minsley, Nathan Leon Foks, Paul A. Bedrosian 2021 United States Geological Survey

Quantifying Model Structural Uncertainty Using Airborne Electromagnetic Data, Burke J. Minsley, Nathan Leon Foks, Paul A. Bedrosian

USGS Staff -- Published Research

The ability to quantify structural uncertainty in geological models that incorporate geophysical data is affected by two primary sources of uncertainty: geophysical parameter uncertainty and uncertainty in the relationship between geophysical parameters and geological properties of interest. Here, we introduce an open-source, trans-dimensional Bayesian Markov chain Monte Carlo (McMC) algorithm GeoBIPy—Geophysical Bayesian Inference in Python—for robust uncertainty analysis of time-domain or frequency-domain airborne electromagnetic (AEM) data. The McMC algorithm provides a robust assessment of geophysical parameter uncertainty using a trans-dimensional approach that lets the AEM data inform the level of model complexity necessary by allowing the number of ...


Non-Tropical Cyclone Related Winter Heavy Rainfall Events Over The Philippines: Climatology And Mechanisms, Gemma T. Narisma, Jun Matsumoto, Julie Mae Dado, Lyndon Mark Olaguera 2021 Ateneo de Manila University

Non-Tropical Cyclone Related Winter Heavy Rainfall Events Over The Philippines: Climatology And Mechanisms, Gemma T. Narisma, Jun Matsumoto, Julie Mae Dado, Lyndon Mark Olaguera

Physics Faculty Publications

This study investigates non-tropical cyclone (TC) related boreal winter heavy rainfall events that lead to extensive flooding (HRF) over the Philippines through a case study and composite analysis. The HRF event examined occurred during January 16–22, 2017 over Cagayan de Oro City (CDO) in Mindanao Island (122–127°E, 5–10°N). The accumulated rainfall over CDO reached by about 180 mm from 00 UTC January 16 to 00 UTC January 17, 2017, exceeding the climatological maximum daily rainfall in January over this area. The interaction of a westward propagating cyclonic circulation over Mindanao Island (MCC) and a shearline ...


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