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Climate change

2018

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Articles 31 - 60 of 81

Full-Text Articles in Life Sciences

Plant Functional Groups And Success In A Changing Environment: Modeling Physiological Niches Of Colorado Plateau Plants, Anne Thomas May 2018

Plant Functional Groups And Success In A Changing Environment: Modeling Physiological Niches Of Colorado Plateau Plants, Anne Thomas

Undergraduate Honors Theses

Quantifying the environmental and physiological niches of plant species is crucial to predicting their sensitivity to global change, and aggregating plant species by functional type is fundamental both to ecological theory and to the practicality of large-scale efforts to predict the consequences of global change. However, traditional functional types are not always predictive of individual species’ responses to change. Here, an inverse species distribution modeling approach is used to identify functionally similar species based on physiological niche in order to better anticipate the consequences of climate change on the Colorado Plateau, USA. The Colorado Plateau is a semiarid region particularly ...


A Quantitative Analysis Of The Effects Of Urbanization, Mesophication And Prescribed Burns On Oak Woodlands In The Chicago Metropolitan Area, Chad Populorum May 2018

A Quantitative Analysis Of The Effects Of Urbanization, Mesophication And Prescribed Burns On Oak Woodlands In The Chicago Metropolitan Area, Chad Populorum

Celebration of Learning

Urban expansion has had devastating impacts on forest ecosystems, especially within the past century. Human attempts to dominate nature have diminished natural disturbance regimes, which have maintained the biodiversity and historic composition of these ecosystems. Fires have been a prominent force in maintaining the structure of oak, hickory and other heliophytic (sun loving and fire-adapted) forest systems. Human induced fire suppression has led to mesophication across North America. Mesophication is the transition from drier conditions with open canopies to wetter conditions with closed canopies. These new conditions decrease the survival rates of these important species and begin to favor mesophytic ...


High Interspecific Variation In Nutrient Excretion Within A Guild Of Closely Related Caddisfly Species, Jared A. Balik, Brad W. Taylor, Susan E. Washko, Scott A. Wissinger May 2018

High Interspecific Variation In Nutrient Excretion Within A Guild Of Closely Related Caddisfly Species, Jared A. Balik, Brad W. Taylor, Susan E. Washko, Scott A. Wissinger

Watershed Sciences Faculty Publications

Understanding the amount of variation in functional traits between closely related species within guilds is critical for understanding links between community composition and ecosystem processes. Nutrient excretion is an important link between animals and their environments, and aquatic invertebrate communities can supply a considerable proportion of ecosystem nutrient demand via excretion. We quantified nitrogen (N) and phosphorus (P) excretion rates of 10 species of larval caddisflies that inhabit high‐elevation ponds and wetlands to determine the magnitude of variation in nutrient excretion within this guild. We found considerable interspecific variation in biomass‐specific excretion of nitrogen (eightfold differences), phosphorus (sevenfold ...


Developing A Risk Assessment Protocol To Quantify Distribution And Uptake Of Persistent Organic Pollutants In Glacial Outflows, Kimberley Rain Miner May 2018

Developing A Risk Assessment Protocol To Quantify Distribution And Uptake Of Persistent Organic Pollutants In Glacial Outflows, Kimberley Rain Miner

Electronic Theses and Dissertations

Pollutants released by industrialized nations between 1960 and 2004 have been transported northward through atmospheric processes and deposited into glaciated alpine ecosystems. Many of these chemicals retain their original structure and are absorbed into the biota thousands of miles away from where they were originally utilized. With a warming climate increasing the melt of alpine glaciers, these glaciers may be introducing growing amounts of toxins into the watershed. While studies have demonstrated the existence of resident pollutants within glaciated ecosystems, no one has developed a risk assessment to identify sources and quantity of risk posed by these compounds when released ...


Science, Advocacy, Policy, Planning: Tools For Advancing Transportation Equity, Garrett S. Mcallister May 2018

Science, Advocacy, Policy, Planning: Tools For Advancing Transportation Equity, Garrett S. Mcallister

Graduate Student Portfolios

The theme of this portfolio is how different tools and approaches can be used for advancing transportation equity. Broadly defined, transportation equity is about fairness in transportation. There are a number of ways this fairness can be assessed. The most common way to assess transportation equity is by looking at the fairness of outcomes, distributed geographically, socially, or even by mode of transportation. Equity can also be defined by the fairness of processes. The first half of the portfolio illustrates some of the problems with the current transportation system and how it is unhealthy (Piece 1) and unjust (Piece 2 ...


Linking Climate Change And Mortality In Piñon-Juniper Woodlands, From Leaf To Ecosystem, Amanda I. Liebrecht May 2018

Linking Climate Change And Mortality In Piñon-Juniper Woodlands, From Leaf To Ecosystem, Amanda I. Liebrecht

Biology ETDs

As global climate changes, the Southwestern US is predicted to experience more frequent and intense drought events. Extreme droughts can drive decreases in both physiological and ecosystem function, and can result in widespread tree mortality. Piñon-juniper (PJ) woodlands are a prevalent ecosystem in the region, co-dominated by two tree species, piñon (Pinus edulis) and juniper (Juniperus monosperma). Drought-induced piñon mortality has occurred over the past few decades, coinciding with outbreaks of a piñon-specific bark beetle. Piñon and juniper have different hydraulic strategies (isohydry and anisohydry, respectively) that should affect the way each species responds to drought. In this dissertation, I ...


Climate Sensitivity And Potential Vulnerability Of Guatemalan Fir (Abies Guatemalensis) Forests In Totonicapán, Guatemala, Talia G. Anderson, Daniel Griffin, Kevin Anchukaitis, Diego Pons, Matthew Taylor May 2018

Climate Sensitivity And Potential Vulnerability Of Guatemalan Fir (Abies Guatemalensis) Forests In Totonicapán, Guatemala, Talia G. Anderson, Daniel Griffin, Kevin Anchukaitis, Diego Pons, Matthew Taylor

Journal of Latin American Geography

Despite continued forest loss and extensive demand for wood products throughout Guatemala, the locally managed and protected forests of Totonicapán remain some of the most intact within the country. Here, we study the growth rings of Guatemalan fir (Pinaceae; Abies guatemalensis Rehder; pinabete) at Totonicapán to assess environmental influences on tree growth and the potential vulnerability of these forests to climate change in the western highlands. We find that late summer and dry season precipitation are critical drivers in annual ring-width variability and that tree growth responds negatively to warm sea surface temperature anomalies in the eastern tropical Pacific. Considering ...


Geospatial Analysis Of Eastern Oyster Habitat And Disease In The Chesapeake Bay, Hannah Bradley May 2018

Geospatial Analysis Of Eastern Oyster Habitat And Disease In The Chesapeake Bay, Hannah Bradley

Senior Honors Projects, 2010-current

Crassostrea virginica, common name eastern oyster, in the Chesapeake Bay is currently at 1% of its peak annual landings in 1884 (600,000 metric tons). This decline is in spite of being considered a resilient species. Causes of the decline include overharvesting, disease, and habitat loss. While efforts have been made to combat each cause, the key element to recovering the population is coordinated habitat restoration. This study aims to develop a GIS-based habitat model for the eastern oyster in the Chesapeake Bay. The first goal of this study was to determine the water quality parameters necessary for successful oyster ...


How Does Body Size Affect Zooplankton Feeding In A Low Oxygen Environment?, Jacob Mikullitz May 2018

How Does Body Size Affect Zooplankton Feeding In A Low Oxygen Environment?, Jacob Mikullitz

Honors Scholar Theses

Zooplankton grazers are essential to reducing the impact of algal blooms, especially as they become more frequent in a warming world. The size of these grazers is important as it determines how much algae they are able to consume. This study aims to investigate how low water oxygen content, another likely outcome of climate change, will impact competition between zooplankton of different size. When zooplankton of different sizes were tested against each other at different dissolved oxygen levels, it was found the larger species could feed more effectively at low oxygen. This suggests even in a future with reduced dissolved ...


Phenology Of A Southern Population Of Mountain Pine Beetle (Dendroctonus Ponderosae), Anne Elise Mcmanis May 2018

Phenology Of A Southern Population Of Mountain Pine Beetle (Dendroctonus Ponderosae), Anne Elise Mcmanis

All Graduate Theses and Dissertations

Mountain pine beetle (Dendroctonus ponderosae, Hopkins) is a major disturbance agent in pine ecosystems of western North America. Adaptation to local climates has resulted in primarily univoltine (one generation per year) generation timing across a thermally diverse latitudinal gradient. We hypothesized that this pattern in total development time is shaped by selection for slower developmental rates, altered developmental thresholds, or oviposition rates in southern populations inhabiting warmer climates. To investigate traits responsible for latitudinal differences we measured lifestage-specific development of southern mountain pine beetle eggs, larvae and pupae across a range of temperatures. We also describe and model oviposition of ...


Permafrost And Drought Regulate Vulnerability Of Tibetan Plateau Grasslands To Warming, Yan Yang, Kelly A. Hopping, Genxu Wang, Ji Chen, Ahui Peng, Julia A. Klein Apr 2018

Permafrost And Drought Regulate Vulnerability Of Tibetan Plateau Grasslands To Warming, Yan Yang, Kelly A. Hopping, Genxu Wang, Ji Chen, Ahui Peng, Julia A. Klein

Kelly A. Hopping

The Tibetan Plateau has the largest expanse of high‐elevation permafrost in the world, and it is experiencing climate warming that may jeopardize the functioning of its alpine ecosystems. Many studies have focused on the effects of climate warming on vegetation production and diversity on the Plateau, but their disparate results have hindered a comprehensive, regional understanding. From a synthesis of twelve warming experiments across the Plateau, we found that warming increased aboveground net primary production (ANPP) and vegetation height at sites with permafrost, but ANPP decreased with warming at non‐permafrost sites. Aboveground net primary production responded more negatively ...


2018 3rd Place: The Growth And Characterization Of Psychromonas Aquimarina, A New Model Organism For Climate Change, Carrie Carpenter, Catherine Santai Apr 2018

2018 3rd Place: The Growth And Characterization Of Psychromonas Aquimarina, A New Model Organism For Climate Change, Carrie Carpenter, Catherine Santai

Harrisburg University Research Symposium

Climate change is currently affecting the Earth and will only increase with time1. A change to the environment means that wildlife will need to adapt. Adaptation occurs when an organism changes physiologically or otherwise to permit continued growth in the environment in which it resides. Scientists do not completely understand adaptation mechanisms. Psychromonas aquimarinais a novel bacterium, with little known. This bacteria will first be characterized and studied before conducting temperature studies. Psychromonas aquimarina is a psychrophile, a bacterium able to survive in colder regions where most bacteria would not. P. aquimarinais an ideal bacterium to study because climate change ...


Providing Modeling Tools On Extreme Events Of Climate Change To Puget Sound Managers, Andrea Copping, Zhaoqing Yang, Ian Miller, Jude Apple, Guillaume Mauger, Nathalie Voisin, Aimee Fullerton, Ning Sun, Mikaela Freeman Apr 2018

Providing Modeling Tools On Extreme Events Of Climate Change To Puget Sound Managers, Andrea Copping, Zhaoqing Yang, Ian Miller, Jude Apple, Guillaume Mauger, Nathalie Voisin, Aimee Fullerton, Ning Sun, Mikaela Freeman

Salish Sea Ecosystem Conference

As climate change becomes a reality for the management of Puget Sound, water resource and fisheries managers should consider incorporating predictions and outcomes of future climate drivers into their long-range plans and daily operations. Modeling tools that focus on climate impacts and predictions show that extreme events are more often responsible for large impacts than the long-term press of climate change. Working with water resource and fisheries managers in the Dungeness and Skagit watersheds, this project uses outputs of existing climate and estuarine models to define thresholds and metrics associated with extreme climate-driven events that are of importance to the ...


The Response Of Big Sagebrush (Artemisia Tridentata) To Interannual Climate Variation Changes Across Its Range, Andrew R. Kleinhesselink, Peter B. Adler Apr 2018

The Response Of Big Sagebrush (Artemisia Tridentata) To Interannual Climate Variation Changes Across Its Range, Andrew R. Kleinhesselink, Peter B. Adler

Ecology Center Publications

Understanding how annual climate variation affects population growth rates across a species' range may help us anticipate the effects of climate change on species distribution and abundance. We predict that populations in warmer or wetter parts of a species' range should respond negatively to periods of above average temperature or precipitation, respectively, whereas populations in colder or drier areas should respond positively to periods of above average temperature or precipitation. To test this, we estimated the population sensitivity of a common shrub species, big sagebrush (Artemisia tridentata), to annual climate variation across its range. Our analysis includes 8,175 observations ...


Recent Conditions Highlight Regional Differences In Temperature, Salinity And Dissolved Oxygen Between Strait Of Juan De Fuca And Puget Sound Sites Under Anomalous 2014-2017 Climate Patterns, Julia Bos, Christopher Krembs, Skip Albertson, Mya Keyzers, Allison Brownlee, Carol Maloy Apr 2018

Recent Conditions Highlight Regional Differences In Temperature, Salinity And Dissolved Oxygen Between Strait Of Juan De Fuca And Puget Sound Sites Under Anomalous 2014-2017 Climate Patterns, Julia Bos, Christopher Krembs, Skip Albertson, Mya Keyzers, Allison Brownlee, Carol Maloy

Salish Sea Ecosystem Conference

Understanding impacts of climate change on Salish Sea water quality is critical yet challenging due to the complexity, strength and diversity of influences on circulation and mixing. Different extreme climate conditions in recent years (2014-2017) include record warm temperatures with reduced snow pack in 2014-2015 followed by a few years of alternating summer droughts with record rainy seasons. These conditions influenced marine water temperature, salinity and dissolved oxygen (DO) throughout the Salish Sea. Analyses reveal distinct differences in these key physical and chemical characteristics between Strait of Juan de Fuca sites and sites within Puget Sound basins. Extremely low DO ...


Space Matters: Incorporating Mechanistically Determined Spatial Patterns Into Projected Impacts Of Climate Change On Stream Temperature, Se-Yeun Lee, Aimee H. Fullerton, Ashley Steel, Christian Torgersen Apr 2018

Space Matters: Incorporating Mechanistically Determined Spatial Patterns Into Projected Impacts Of Climate Change On Stream Temperature, Se-Yeun Lee, Aimee H. Fullerton, Ashley Steel, Christian Torgersen

Salish Sea Ecosystem Conference

River temperatures are increasing as a results of climate change, and combined with decreased summertime flows, coldwater species are becoming increasingly stressed. In order to conserve sensitive species, managers need an estimate of how the availability of summertime thermal refuges in rivers will change in the future. Here, we applied the DHSVM-RBM, an existing process-based water temperature model that has been shown to accurately represent temporal variance in water temperature over hours to years. We calibrated this model to empirical data for two case study watersheds (Siletz River, Oregon and Snoqualmie River, Washington) to also ensure representation of observed spatial ...


Zooplankton Ecology Of The Fraser River Estuary, Joanne Breckenridge, Evgeny Pakhomov Apr 2018

Zooplankton Ecology Of The Fraser River Estuary, Joanne Breckenridge, Evgeny Pakhomov

Salish Sea Ecosystem Conference

Zooplankton are critical components of the pelagic food web. This presentation will discuss zooplankton ecology in the Fraser River Estuary, drawing on the preliminary results of a monitoring study, which ran from August 2013 to May 2016, as well as specific investigations into the life history and behaviour of one of the dominant species, the copepod Eurytemora affinis. Data analysis is ongoing, but, for most of the year, estuarine zooplankton appear limited by the estuary’s short residence time. Due to the advective nature of their environment, estuarine zooplankton have evolved mechanisms to retain populations within the estuary. Our results ...


Climate Change Adaptation Planning For Port Of Seattle Waterfront Properties, Joseph Gellings Apr 2018

Climate Change Adaptation Planning For Port Of Seattle Waterfront Properties, Joseph Gellings

Salish Sea Ecosystem Conference

As Seattle’s economy continues to evolve, its significance as a port city is undiminished. The container ports of Seattle and Tacoma recently entered into a joint management agreement and, together, they are the fourth largest container gateway in North America. At the same time, competition is fierce between the remaining rival ports and capital spending on the land-side cargo terminals is a key variable in this competition. This makes it critical that the Port understands what role climate change adaptation will play in the broader challenge of setting the level of public fund expenditures on terminal upgrade projects. The ...


Lessons Learned: Tidal Marsh Restoration In A Dynamic Context Of Stress And Climate Change, Roger N. Fuller Apr 2018

Lessons Learned: Tidal Marsh Restoration In A Dynamic Context Of Stress And Climate Change, Roger N. Fuller

Salish Sea Ecosystem Conference

In the Stillaguamish estuary, tidal wetlands have been receding for decades as a result of both natural and anthropogenic changes. Despite current restoration efforts, monitoring suggests that rising stress from climate change impacts on summer flows, legacy stresses from the levee system, and increased plant mortality from avian and insect herbivores may interact to accelerate the rate of marsh loss. Lessons learned from a 2012 restoration project should inform adaptive management and future restoration projects. Post-restoration monitoring has revealed a pattern of interacting stresses at both the site and system scales that affects marsh productivity and resilience to climate change ...


Guiding Chinook Salmon Recovery Projects Towards A More Resilient Future, Stacy Vynne Mckinstry, Amber Moore Apr 2018

Guiding Chinook Salmon Recovery Projects Towards A More Resilient Future, Stacy Vynne Mckinstry, Amber Moore

Salish Sea Ecosystem Conference

Changing climate conditions, along with land-use and other ecological changes, are affecting the health, vitality, and resilience of Chinook salmon populations in watersheds throughout Puget Sound. Restoration and protection projects are designed to address the most critical factors affecting salmon populations. However, with climate change, these factors may change: the medium- and long-term success of the projects and expected benefits to salmon may be compromised and/or current investments may not achieve expected results. The Puget Sound Partnership recently released guidance to help project sponsors and local salmon recovery lead entities identify key climate-related risks for Chinook salmon, guide project ...


Fir Island Farm: Estuary Restoration Project: Designing For Climate Change And Uncertainty In Shoreline Flood Risk Reduction And Ecosystem Restoration Projects, David Cline Apr 2018

Fir Island Farm: Estuary Restoration Project: Designing For Climate Change And Uncertainty In Shoreline Flood Risk Reduction And Ecosystem Restoration Projects, David Cline

Salish Sea Ecosystem Conference

The recently designed and constructed Fir Island Farm – Estuary Restoration Project involves construction of a 1-mile long shoreline levee (dike) setback for restoration of 130 acres of farm land for tidal marsh estuary ecosystem restoration. The key uncertainty, and resiliency, design elements of concern include 1) selection of dike level of protection and design elevations considering climate change sea level rise projections, 2) inclusion of erosion protection measures, 3) farm drainage tailwater conditions and 4) ecosystem marsh vegetated plain future elevations and large woody debris loading conditions. This presentation discusses how site characterization, instrumentation, numerical modeling and monitoring were used ...


Maine's State Policy For Solar Farms On Agricultural Land., Elliot James Lee Apr 2018

Maine's State Policy For Solar Farms On Agricultural Land., Elliot James Lee

Student Policy Briefs

A change is coming to the Northeast, and Maine is not prepared to handle it. Across the Northeast, agricultural land is being converted to solar farms, with no policy in place to handle it. Opening Maine up to numerous problems with, permitting, regulations, taxes, best management practices, size of these farms, and lack of infrastructure to name a few. All of which need to be addressed, while dealing with the general instability of policies surrounding green energy and green technology like solar panels. This change is coming quickly, and although we need this policy soon, it cannot be rushed, or ...


Solar Energy On Farmland, Eden Martin Apr 2018

Solar Energy On Farmland, Eden Martin

Student Policy Briefs

The large-scale use of agriculture and land alteration has caused the concentrations of greenhouse gases in our atmosphere to rise in the last 250 years (Janke, 2010). The majority of greenhouse gas emissions is caused by the burning of fossil fuels. Fossil fuels are a threat when it comes to the health of our planet but they are also abundant and affordable (Janke, 2010). This threat has caused many to start exploring the use of alternative energy sources that are renewable; solar technology, wind power, geothermal, and ocean energy (Janke, 2010). According to Rebecca Hernandez, “solar energy has one of ...


Introduction To Environmental Science: 2nd Edition, Caralyn Zehnder, Kalina Manoylov, Samuel Mutiti, Christine Mutiti, Allison Vandevoort, Donna Bennett Apr 2018

Introduction To Environmental Science: 2nd Edition, Caralyn Zehnder, Kalina Manoylov, Samuel Mutiti, Christine Mutiti, Allison Vandevoort, Donna Bennett

Biological Sciences Open Textbooks

2nd Edition: Revised by Kalina Manoylov, Allison Rick VandeVoort, Christine Mutiti, Samuel Mutiti and Donna Bennett in 2017.

Authors' Description:

This course uses the basic principles of biology and earth science as a context for understanding environmental policies and resource management practices. Our planet is facing unprecedented environmental challenges, from oil spills to global climate change. In ENSC 1000, you will learn about the science behind these problems; preparing you to make an informed, invaluable contribution to Earth’s future. I hope that each of you is engaged by the material presented and participates fully in the search for, acquisition ...


Climate Change, Cattle, And The Challenge Of Sustainability In A Telecoupled System In Africa, Tara S. Easter, Alexander K. Killion, Neil H. Carter Mar 2018

Climate Change, Cattle, And The Challenge Of Sustainability In A Telecoupled System In Africa, Tara S. Easter, Alexander K. Killion, Neil H. Carter

Neil H. Carter

Information, energy, and materials are flowing over greater distances than in the past, changing the structure and feedbacks within and across coupled human and natural systems worldwide. The telecoupling framework was recently developed to understand the feedbacks and multidirectional flows characterizing social and environmental interactions between distant systems. We extend the application of the telecoupling framework to illustrate how flows in beef affect and are affected by social-ecological processes occurring between distant systems in Africa, and how those dynamics will likely change over the next few decades because of climate-induced shifts in a major bovine disease, trypanosomosis. The disease is ...


Ecosystem Functional Response Across Precipitation Extremes In A Sagebrush Steppe, Andrew T. Tredennick, Andrew R. Kleinhesselink, J. Bret Taylor, Peter B. Adler Mar 2018

Ecosystem Functional Response Across Precipitation Extremes In A Sagebrush Steppe, Andrew T. Tredennick, Andrew R. Kleinhesselink, J. Bret Taylor, Peter B. Adler

Wildland Resources Faculty Publications

Background

Precipitation is predicted to become more variable in the western United States, meaning years of above and below average precipitation will become more common. Periods of extreme precipitation are major drivers of interannual variability in ecosystem functioning in water limited communities, but how ecosystems respond to these extremes over the long-term may shift with precipitation means and variances. Long-term changes in ecosystem functional response could reflect compensatory changes in species composition or species reaching physiological thresholds at extreme precipitation levels.

Methods

We conducted a five year precipitation manipulation experiment in a sagebrush steppe ecosystem in Idaho, United States. We ...


Phenology Differences Between Native And Novel Exotic‐Dominated Grasslands Rival The Effects Of Climate Change, Brian J. Wilsey, Leanne M. Martin, Andrew D. Kaul Mar 2018

Phenology Differences Between Native And Novel Exotic‐Dominated Grasslands Rival The Effects Of Climate Change, Brian J. Wilsey, Leanne M. Martin, Andrew D. Kaul

Ecology, Evolution and Organismal Biology Publications

1. Novel ecosystems can differ from the native systems they replaced. We used phenology measures to compare ecosystem functioning between novel exotic-dominated and native-dominated grasslands in the central U.S.

2. Phenology, or timing of biological events, is affected by climate and land use changes. We assessed how phenology shifts are being altered by exotic species dominance by comparing remotely sensed Normalized Difference Vegetation Index within growing seasons at exotic- and native-dominated sites along a latitudinal gradient. Exotic species were dominated by the C3 species functional group in the north and the C4 species functional group in the south.

3 ...


Landscape-Scale Effects Of Supra-Seasonal Drought On Semi-Aquatic Snake Assemblages, Philip N. Vogrinc, Andrew M. Durso, Christopher T. Winne, John D. Willson Feb 2018

Landscape-Scale Effects Of Supra-Seasonal Drought On Semi-Aquatic Snake Assemblages, Philip N. Vogrinc, Andrew M. Durso, Christopher T. Winne, John D. Willson

Biology Faculty Publications

Climate change is predicted to alter the frequency and intensity of precipitation events, placing stress on freshwater aquatic ecosystems and their associated wildlife. Thus, understanding interspecific variation in drought sensitivity and the repeatability of those responses across heterogeneous landscapes is critical. Semi-aquatic snakes serve important roles within aquatic ecosystems and several species are threatened. Yet, little is known about the effects of drought on semi-aquatic snake populations or assemblages. We systematically trapped 20 isolated wetlands in South Carolina before (2006) and after (2013) a multi-year supra-seasonal drought to determine drought-induced shifts in occupancy and detection for five semi-aquatic snake species ...


Infrared Heater System For Warming Tropical Forest Understory Plants And Soils, Bruce Kimball, Auro M. Alonso-Rodriguez, Molly A. Cavaleri, Sasha Reed, Grizelle Gonzalez, Tana E. Wood Feb 2018

Infrared Heater System For Warming Tropical Forest Understory Plants And Soils, Bruce Kimball, Auro M. Alonso-Rodriguez, Molly A. Cavaleri, Sasha Reed, Grizelle Gonzalez, Tana E. Wood

Michigan Tech Publications

The response of tropical forests to global warming is one of the largest uncertainties in predicting the future carbon balance of Earth. To determine the likely effects of elevated temperatures on tropical forest understory plants and soils, as well as other ecosystems, an infrared (IR) heater system was developed to provide in situ warming for the Tropical Responses to Altered Climate Experiment (TRACE) in the Luquillo Experimental Forest in Puerto Rico. Three replicate heated 4‐m‐diameter plots were warmed to maintain a 4°C increase in understory vegetation compared to three unheated control plots, as sensed by IR thermometers ...


Changes In Feeding Selectivity Of Freshwater Invertebrates Across A Natural Thermal Gradient, Timothy A C Gordon, Joana Neto-Cerejeira, Paula C. Furey, Eoin J. O’Gorman Jan 2018

Changes In Feeding Selectivity Of Freshwater Invertebrates Across A Natural Thermal Gradient, Timothy A C Gordon, Joana Neto-Cerejeira, Paula C. Furey, Eoin J. O’Gorman

Paula Furey

No abstract provided.