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The Contribution Of Local And Transport Processes To Phytoplankton Biomass Variability Over Different Timescales In The Upper James River, Virginia, Qubin Qin, Jian Shen 2018 Virginia Institute of Marine Science

The Contribution Of Local And Transport Processes To Phytoplankton Biomass Variability Over Different Timescales In The Upper James River, Virginia, Qubin Qin, Jian Shen

Articles

Although both local processes (photosynthesis, respiration, grazing, and settling), and transport processes (advective transport and diffusive transport) significantly affect local phytoplankton dynamics, it is difficult to separate their contributions and to investigate the relative importance of each process to the local variability of phytoplankton biomass over different timescales. A method of using the transport rate is introduced to quantify the contribution of transport processes. By combining the time-varying transport rate and high-frequency observed chlorophyll a data, we can explicitly examine the impact of local and transport processes on phytoplankton biomass over a range of timescales from hourly to annually. For ...


Climate Models: An Assessment Of Strengths And Limitations, David C. Bader, Curtis Covey, William J. Gutowski Jr., Isaac M. Held, Kenneth e. Kunkel, Ronald L. Miller, Robin T. Tokmakian, Minghua H. Zhang 2017 Lawrence Livermore National Laboratory

Climate Models: An Assessment Of Strengths And Limitations, David C. Bader, Curtis Covey, William J. Gutowski Jr., Isaac M. Held, Kenneth E. Kunkel, Ronald L. Miller, Robin T. Tokmakian, Minghua H. Zhang

William J. Gutowski, Jr.

Executive Summary Scientists extensively use mathematical models of Earth’s climate, executed on the most powerful computers available, to examine hypotheses about past and present-day climates. Development of climate models is fully consistent with approaches being taken in many other fields of science dealing with very complex systems. These climate simulations provide a framework within which enhanced understanding of climate-relevant processes, along with improved observations, are merged into coherent projections of future climate change. This report describes the models and their ability to simulate current climate. The science of climate modeling has matured through finer spatial resolution, the inclusion of ...


Fagus Sylvatica (European Beech) Id# 1134, Alejandro Rojas 2017 Salve Regina University

Fagus Sylvatica (European Beech) Id# 1134, Alejandro Rojas

BIO 140 Arboretum Project

Location: Across the road from the Mercy Chapel

Height: 25.92 m

Diameter at Breast Height: 112.6 cm

Radius of Crown: 8.3 m

Condition: Fair

Age Class: Mature


Quercus​ ​ Cerris (Turkey Oak) Id# Unknown, Erin E. Stangel 2017 Salve Regina University

Quercus​ ​ Cerris (Turkey Oak) Id# Unknown, Erin E. Stangel

BIO 140 Arboretum Project

Location: near McKillop Library

Height: 41.49 m

Diameter at Breast Height: 4.25 m

Radius of crown: 14.3 m

Condition: Good

Age Class: Mature


Acer Palatum (Japanese Maple) Id#52, Bryan C. Sheppard Jr 2017 Salve Regina University

Acer Palatum (Japanese Maple) Id#52, Bryan C. Sheppard Jr

BIO 140 Arboretum Project

Location: Miley Residence Hall

Height: 9.01600m

Diameter at Breast Height: 135.7cm

Condition: Good

Age Class: Mature


Cercidiphyllum Japonicum (Katsura Tree) Id# Unknown, Kunsang C. Lama 2017 Salve Regina University

Cercidiphyllum Japonicum (Katsura Tree) Id# Unknown, Kunsang C. Lama

BIO 140 Arboretum Project

Location: In front of library

Height: 2.82 m

Diameter at Breast Height: 15 cm

Radius of Crown: 1.60 m

Condition: Unknown

Age Class: Unknown


A Risk-Based Method For Estimating The Carbon Sequestration Budget For A Mixed Hardwood Forest, Erin Cooper 2017 University of Arkansas, Fayetteville

A Risk-Based Method For Estimating The Carbon Sequestration Budget For A Mixed Hardwood Forest, Erin Cooper

Chemical Engineering Undergraduate Honors Theses

Carbon Dioxide (CO2) levels in the atmosphere have risen from approximately 310 ppm in the 1950’s to over 400 ppm as of 2015. This rise in CO2 has likely resulted in the observed warming trend of the earth’s atmosphere in the same time frame, causing significant concern in the scientific community. Several mitigation strategies have arisen to combat the upward trend of CO2 emissions in recent decades, among them being carbon sequestration- the process of capturing CO2 from the atmosphere and holding it for an extended period of time. This study used the U ...


Quantifying Resilience Of Multiple Ecosystem Services And Biodiversity In A Temperate Forest Landscape, Elena Cantarello, Adrian C. Newton, Phillip A. Martin, Paul M. Evans, Arjan Gosal, Melissa S. Lucash 2017 Bournemouth University

Quantifying Resilience Of Multiple Ecosystem Services And Biodiversity In A Temperate Forest Landscape, Elena Cantarello, Adrian C. Newton, Phillip A. Martin, Paul M. Evans, Arjan Gosal, Melissa S. Lucash

Melissa S. Lucash

Resilience is increasingly being considered as a new paradigm of forest management among scientists, practitioners, and policymakers. However, metrics of resilience to environmental change are lacking. Faced with novel disturbances, forests may be able to sustain existing ecosystem services and biodiversity by exhibiting resilience, or alternatively these attributes may undergo either a linear or nonlinear decline. Here we provide a novel quantitative approach for assessing forest resilience that focuses on three components of resilience, namely resistance, recovery, and net change, using a spatially explicit model of forest dynamics. Under the pulse set scenarios, we explored the resilience of nine ecosystem ...


Disequilibrium Of Fire-Prone Forests Sets The Stage For A Rapid Decline In Conifer Dominance During The 21st Century, Josep M. Serra-Diaz, Charles Maxwell, Melissa S. Lucash, Robert M. Scheller, Danelle M. Laflower, Adam D. Miller, Alan J. Tepley, Howard E. Epstein, Kristina J. Anderson-Teixeira, Jonathan R. Thompson 2017 Harvard University

Disequilibrium Of Fire-Prone Forests Sets The Stage For A Rapid Decline In Conifer Dominance During The 21st Century, Josep M. Serra-Diaz, Charles Maxwell, Melissa S. Lucash, Robert M. Scheller, Danelle M. Laflower, Adam D. Miller, Alan J. Tepley, Howard E. Epstein, Kristina J. Anderson-Teixeira, Jonathan R. Thompson

Melissa S. Lucash

As trees are long-lived organisms, the impacts of climate change on forest communities may not be apparent on the time scale of years to decades. While lagged responses to environmental change are common in forested systems, potential for abrupt transitions under climate change may occur in environments where alternative vegetation states are influenced by disturbances, such as fire. The Klamath mountains (northern California and southwest Oregon, USA) are currently dominated by carbon rich and hyper-diverse temperate conifer forests, but climate change could disrupt the mechanisms promoting forest stability– regeneration and fire tolerance— via shifts in the fire regime in conjunction ...


Assessing The Periodic Groundwater Flow Conditions Of A Perched Aquifer System In The Daniel Boone National Forest, Ethan Sweet 2017 Murray State University

Assessing The Periodic Groundwater Flow Conditions Of A Perched Aquifer System In The Daniel Boone National Forest, Ethan Sweet

Posters-at-the-Capitol

Assessing the Periodic Groundwater Flow Conditions of a Perched Aquifer System in the Daniel Boone National Forest

Ethan Sweet and Jonathan Malzone

Eastern Kentucky University, Department of Geosciences

Natural ephemeral wetlands situated among the ridge-tops in the Daniel Boone National Forest serve as reservoirs that recharge a shallow groundwater system. Unique interactions between surface and groundwater in these isolated systems provide substantial support for the native ecosystem, serving as a breeding ground for amphibians and as source water for vegetation—especially in periods of drought. Currently it is not understood how groundwater could provide regional biodiversity, a drought buffer, or ...


Elution Tailing Of Nonaqueous Phase Liquids In Porous Media, Louisa Orr 2017 Portland State University

Elution Tailing Of Nonaqueous Phase Liquids In Porous Media, Louisa Orr

Civil and Environmental Engineering Undergraduate Honors Theses

A variety of porous media were studied to characterize contaminant dispersion over time. This work looked at a compilation of previously published studies to investigate the dependence of long term elution tailing trends on particular soil characteristics. Recession curve analysis was conducted on existing dispersed contaminant literature, to yeild the low-concentration recession constant (K). The R2 values correlating the soil properties to contaminant concentration ranged from 0.12494 to 0.95429. The low-concentration recession constant (K) values ranged from 0.9745407 0.9999988. The relationship between K and the soil properties porosity, organic carbon, and fines fraction is increasing ...


Ginkgo Biloba (Ginkgo/Maidenhair) Id# 44, Christopher J. Mazulis 2017 Salve Regina University

Ginkgo Biloba (Ginkgo/Maidenhair) Id# 44, Christopher J. Mazulis

BIO 140 Arboretum Project

Location: Walgreen Hall lawn

Height: 19 m

Diameter at Breast Height: 66 cm

Radius of Crown: 4.5 m

Condition: Middle condition


Informing Responders Using Gis And Gps, Deidre McCarthy 2017 Cultural Resources GIS Facility, National Park Service

Informing Responders Using Gis And Gps, Deidre Mccarthy

CHAR

Hurricane Katrina devastated the Gulf Coast in August 2005 and created the single largest disaster for cultural resources that the United States has witnessed since the inception of the National Historic Preservation Act (NHPA) in 1966. Notably, the NHPA created the National Register of Historic Places, our nation’s catalog of important cultural resources. The NHPA also stipulates that any federal undertaking which may adversely affect National Register eligible resources be mitigated. For the Federal Emergency Management Agency (FEMA), Katrina created the largest compliance project ever under Section 106 of the NHPA.

Although causing a great deal of damage, Katrina ...


Improving Soil Erosion Prevention In Greece With New Tools, G. N. Zaimes, K. Ioannou, V. Iakovoglou, I. Kosmadakis, P. Koutalakis, G. Ranis, D. Emmanouloudis, R. C. Schultz 2017 Eastern Macedonia and Thrace Institute of Technology

Improving Soil Erosion Prevention In Greece With New Tools, G. N. Zaimes, K. Ioannou, V. Iakovoglou, I. Kosmadakis, P. Koutalakis, G. Ranis, D. Emmanouloudis, R. C. Schultz

Richard C. Schultz

Unsustainable anthropogenic activities such as agriculture and urbanization have caused excessive erosion rates that exceed soil formation rates. The Mediterranean region has and continues to experience severe erosion because of the inappropriate agricultural management, overgrazing, deforestation, wildfires, land abandonment, intense road construction and other construction activities. The forecasted increase of intensive rainfall events and prolonged drought periods due to climate change, will enhance surface runoff and sediment transport capacity. The objective of this study was to develop new tools to help land managers mitigate erosion in the country of Greece. One of the tools was a new sensor (ASEMS) that ...


Unmanned Aerial Systems For Monitoring Trace Tropospheric Gases, Travis J. Schuyler, Marcelo I. Guzman 2017 University of Kentucky

Unmanned Aerial Systems For Monitoring Trace Tropospheric Gases, Travis J. Schuyler, Marcelo I. Guzman

Chemistry Faculty Publications

The emission of greenhouse gases (GHGs) has changed the composition of the atmosphere during the Anthropocene. Accurately documenting the sources and magnitude of GHGs emission is an important undertaking for discriminating the contributions of different processes to radiative forcing. Currently there is no mobile platform that is able to quantify trace gases at altitudes(UASs) can be deployed on-site in minutes and can support the payloads necessary to quantify trace gases. Therefore, current efforts combine the use of UASs available on the civilian market with inexpensively designed analytical systems for monitoring atmospheric trace gases. In this context, this perspective introduces ...


Network Technologies Used To Aggregate Environmental Data, Paul Stasiuk, Konstantin Läufer, George K. Thiruvathukal 2017 Loyola University Chicago

Network Technologies Used To Aggregate Environmental Data, Paul Stasiuk, Konstantin Läufer, George K. Thiruvathukal

Konstantin Läufer

The goal of the Loyola Weather Service (lws) project is to design and build a system of functioning environmental monitoring widgets that can intelligently and autonomously control the environment around them based on set thresholds and triggers. The widgets will also have the ability to aggregate their data and easily display this data in various ways: through a user interface in the room that the widget is placed, via a web application, and programmatically via a RESTful web service.


How Useful Is Gsv As An Environmental Observation Tool? An Analysis Of The Evidence So Far., Katherine Nesse, Leah Airt 2017 Seattle Pacific University

How Useful Is Gsv As An Environmental Observation Tool? An Analysis Of The Evidence So Far., Katherine Nesse, Leah Airt

SPU Works

Researchers in many disciplines have turned to Google Street View to replace pedestrian- or carbased in-person observation of streetscapes. It is most prevalent within the research literature on the relationship between neighborhood environments and public health but has been used as diverse as disaster recovery, ecology and wildlife habitat, and urban design. Evaluations of the tool have found that the results of GSV-based observation are similar to the results from in-person observation although the similarity depends on the type of characteristic being observed. Larger, permanent and discrete features showed more consistency between the two methods and smaller, transient and judgmental ...


Turning Monitoring Data Into Simple Population Growth Models: Getting Your Ducks In A Row, Holly Gaff 2017 Old Dominion University

Turning Monitoring Data Into Simple Population Growth Models: Getting Your Ducks In A Row, Holly Gaff

Annual Symposium on Biomathematics and Ecology: Education and Research

No abstract provided.


Land Cover Change Shows Little Effect On Migration Patterns Of Wood Storks And Great Egrets, Johanna Smith 2017 Illinois State University

Land Cover Change Shows Little Effect On Migration Patterns Of Wood Storks And Great Egrets, Johanna Smith

Annual Symposium on Biomathematics and Ecology: Education and Research

No abstract provided.


Climate Change Projections Of The North American Regional Climate Change Assessment Program (Narccap), L. O. Mearns, S. Sain, L. R. Leung, M. S. Bukovsky, S. McGinnis, Raymond W. Arritt, William J. Gutowski Jr., Eugene S. Takle, M. Snyder, R. G. Jones, A. M. B. Nunes, S. Tucker, Daryl E. Herzmann, L. McDaniel, L. Sloan 2017 National Center for Atmospheric Research

Climate Change Projections Of The North American Regional Climate Change Assessment Program (Narccap), L. O. Mearns, S. Sain, L. R. Leung, M. S. Bukovsky, S. Mcginnis, Raymond W. Arritt, William J. Gutowski Jr., Eugene S. Takle, M. Snyder, R. G. Jones, A. M. B. Nunes, S. Tucker, Daryl E. Herzmann, L. Mcdaniel, L. Sloan

William J. Gutowski, Jr.

We investigate major results of the NARCCAP multiple regional climate model (RCM) experiments driven by multiple global climate models (GCMs) regarding climate change for seasonal temperature and precipitation over North America. We focus on two major questions: How do the RCM simulated climate changes differ from those of the parent GCMs and thus affect our perception of climate change over North America, and how important are the relative contributions of RCMs and GCMs to the uncertainty (variance explained) for different seasons and variables? The RCMs tend to produce stronger climate changes for precipitation: larger increases in the northern part of ...


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