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Climate change

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Old Dominion University Climate Change And Sea Level Rise Initiative, Spring 2012, Larry P. Atkinson (Editor) Apr 2012

Old Dominion University Climate Change And Sea Level Rise Initiative, Spring 2012, Larry P. Atkinson (Editor)

CCSLRI Newsletters

Summer 2012 Newsletter of the Old Dominion University Climate Change and Sea Level Rise Initiative

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Evaluating Climate Change Effects In Two Contrasting Reservoirs Using Two-Dimensional Water Quality And Hydrodynamic Models, Oliver Obregon Mar 2012

Evaluating Climate Change Effects In Two Contrasting Reservoirs Using Two-Dimensional Water Quality And Hydrodynamic Models, Oliver Obregon

Theses and Dissertations

I analyzed and compared impacts from global climate change (GCC) and land use change to Deer Creek (United States) a temperate reservoir and Aguamilpa (Mexico), a tropical reservoir by using calibrated CE-QUAL-W2 (W2) water quality and hydrodynamic models based on field data over an extended time period. I evaluated and compared the sensitivity to predicted GCC and land use changes. I individually evaluated changes to air temperature (TAIR), inflow rates (Q), and nutrient loads (PO4-P and NO3-NO2-N) followed by analysis of worst case scenarios. I developed analysis methods using indexes to represent the total …

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Anthropogenic Climate Change And Allergic Diseases, James Blando, Leonard Bielory, Viann Nguyen, Rafael Diaz, Hueiwang Anna Jeng Mar 2012

Anthropogenic Climate Change And Allergic Diseases, James Blando, Leonard Bielory, Viann Nguyen, Rafael Diaz, Hueiwang Anna Jeng

Community & Environmental Health Faculty Publications

Climate change is expected to have an impact on various aspects of health, including mucosal areas involved in allergic inflammatory disorders that include asthma, allergic rhinitis, allergic conjunctivitis and anaphylaxis. The evidence that links climate change to the exacerbation and the development of allergic disease is increasing and appears to be linked to changes in pollen seasons (duration, onset and intensity) and changes in allergen content of plants and their pollen as it relates to increased sensitization, allergenicity and exacerbations of allergic airway disease. This has significant implications for air quality and for the global food supply.

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Genetic Signatures Of A Demographic Collapse In A Large-Bodied Forest Dwelling Primate (Mandrillus Leucophaeus), Nelson Ting, Christos Astaras, Gail Hearn, Shaya Honarvar, Joel Corush, Andrew S. Burrell, Naomi Phillips, Bethan J. Morgan, Elizabeth L. Gadsby, Ryan L. Raaum, Christian Roos Feb 2012

Genetic Signatures Of A Demographic Collapse In A Large-Bodied Forest Dwelling Primate (Mandrillus Leucophaeus), Nelson Ting, Christos Astaras, Gail Hearn, Shaya Honarvar, Joel Corush, Andrew S. Burrell, Naomi Phillips, Bethan J. Morgan, Elizabeth L. Gadsby, Ryan L. Raaum, Christian Roos

Publications and Research

It is difficult to predict how current climate change will affect wildlife species adapted to a tropical rainforest environment. Understanding how population dynamics fluctuated in such species throughout periods of past climatic change can provide insight into this issue. The drill (Mandrillus leucophaeus) is a large-bodied rainforest adapted mammal found in West Central Africa. In the middle of this endangered monkey’s geographic range is Lake Barombi Mbo, which has a well-documented palynological record of environmental change that dates to the Late Pleistocene. We used a Bayesian coalescent-based framework to analyze 2,076 base pairs of mitochondrial DNA across wild drill populations …

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Complex Terrain Leads To Bidirectional Responses Of Soil Respiration To Inter-Annual Water Availability, Diego Andrés Riveros-Iregui, Brian L. Mcglynn, Ryan E. Emanuel, Howard E. Epstein Feb 2012

Complex Terrain Leads To Bidirectional Responses Of Soil Respiration To Inter-Annual Water Availability, Diego Andrés Riveros-Iregui, Brian L. Mcglynn, Ryan E. Emanuel, Howard E. Epstein

School of Natural Resources: Faculty Publications

Research on the terrestrial C balance focuses largely on measuring and predicting responses of ecosystem-scale production and respiration to changing temperatures and hydrologic regimes. However, landscape morphology can modify the availability of resources from year to year by imposing physical gradients that redistribute soil water and other biophysical variables within ecosystems. This article demonstrates that the well-established biophysical relationship between soil respiration and soil moisture interacts with topographic structure to create bidirectional (i.e., opposite) responses of soil respiration to inter-annual soil water availability within the landscape. Based on soil respiration measurements taken at a subalpine forest in central Montana, we …

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Likelihood Of Occurrence Of Bark Beetle Attacks On Conifer Forests In Honduras Under Normal And Climate Change Scenarios, Alexander J. Hernandez, Javier Saborio, R. Douglas Ramsey, Samuel Rivera Jan 2012

Likelihood Of Occurrence Of Bark Beetle Attacks On Conifer Forests In Honduras Under Normal And Climate Change Scenarios, Alexander J. Hernandez, Javier Saborio, R. Douglas Ramsey, Samuel Rivera

Wildland Resources Faculty Publications

Conifer forests cover approximately 27% of Honduras (∼3 million ha), and have been traditionally affected by bark beetle (Dendroctonus frontalis) outbreaks. These outbreaks impact ecosystem health and predispose more attacks. We developed a logistic model to assess the forests’ susceptibility to a beetle attack. Models were fitted using climatic, topographic and remote sensing variables. We show a method to generate pseudo-absences based on a multi-temporal wetness index. Our optimized threshold to convert the continuum of probabilities into 0 and 1 value was 0.65. Our overall accuracy was 68.7%. We also developed models that integrate climate change scenarios. Our …

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A Functional Trait Perspective On Plant Invasion, Rebecca E. Drenovsky, Brenda J. Grewell, Carla M. D'Antonio Jan 2012

A Functional Trait Perspective On Plant Invasion, Rebecca E. Drenovsky, Brenda J. Grewell, Carla M. D'Antonio

Biology

Global environmental change will affect non-native plant invasions, with profound potential impacts on native plant populations, communities and ecosystems. In this context, we review plant functional traits, particularly those that drive invader abundance (invasiveness) and impacts, as well as the integration of these traitsacross multiple ecological scales, and as a basis for restoration and management.
We review the concepts and terminology surrounding functional traits and how functional traits influence processes at the individual level. We explore how phenotypic plasticity may lead to rapid evolution of novel traits facilitating invasiveness in changing environments and then oscale up' to evaluate the relative …

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Climate Change On The Shoshone National Forest, Wyoming: A Synthesis Of Past Climate, Climate Projections, And Ecosystem Implications, Janine Rice, Andrew Tredennick, Linda A. Joyce Jan 2012

Climate Change On The Shoshone National Forest, Wyoming: A Synthesis Of Past Climate, Climate Projections, And Ecosystem Implications, Janine Rice, Andrew Tredennick, Linda A. Joyce

United States Department of Agriculture, Forest Service / University of Nebraska-Lincoln: Faculty Publications

The Shoshone National Forest (Shoshone) covers 2.4 million acres of mountainous topography in northwest Wyoming and is a vital ecosystem that provides clean water, wildlife habitat, timber, grazing, recreational opportunities, and aesthetic value. The Shoshone has experienced and adapted to changes in climate for many millennia, and is currently experiencing a warming trend that is expected to accelerate in the next century. Climate change directly and indirectly affects the Shoshone’s high-elevation, mountainous terrain that supports unique and sometimes rare ecological components. Several vulnerable and very responsive resources and processes on the Shoshone could interact to produce unforeseeable or undesirable ecosystem …

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Interannual And Spatial Impacts Of Phenological Transitions, Growing Season Length, And Spring And Autumn Temperatures On Carbon Sequestration: A North America Flux Data Synthesis, Chaoyang Wu, Alemu Gonsamo, Jing Ming Chen, Werner A. Kurz, David T. Price, Peter M. Lafleur, Rachhpal S. Jassal, Danilo Dragoni, Gil Bohrer, Christopher M. Gough, Shashi B. Verma, Andrew E. Suyker, J. William Munger Jan 2012

Interannual And Spatial Impacts Of Phenological Transitions, Growing Season Length, And Spring And Autumn Temperatures On Carbon Sequestration: A North America Flux Data Synthesis, Chaoyang Wu, Alemu Gonsamo, Jing Ming Chen, Werner A. Kurz, David T. Price, Peter M. Lafleur, Rachhpal S. Jassal, Danilo Dragoni, Gil Bohrer, Christopher M. Gough, Shashi B. Verma, Andrew E. Suyker, J. William Munger

School of Natural Resources: Faculty Publications

Understanding feedbacks of ecosystem carbon sequestration to climate change is an urgent step in developing future ecosystem models. Using 187 site-years of flux data observed at 24 sites covering three plant functional types (i.e. evergreen forests (EF), deciduous forests (DF) and non-forest ecosystems (NF) (e.g., crop, grassland, wetland)) in North America, we present an analysis of both interannual and spatial relationships between annual net ecosystem production (NEP) and phenological indicators, including the flux-based carbon uptake period (CUP) and its transitions, degree-day-derived growing season length (GSL), and spring and autumn temperatures. Diverse responses were acquired between annul NEP and these indicators …

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The Differences In Vegetation Type On North And South-Facing Slopes, Andrew Villablanca, Katherine Mccabe, Daniel Galuhn Jan 2012

The Differences In Vegetation Type On North And South-Facing Slopes, Andrew Villablanca, Katherine Mccabe, Daniel Galuhn

Featured Research

Our project investigated the relationship between climate change and vegetation type conversion in the Santa Monica Mountains on north and south facing slopes. Our hypothesis is that with a shift in climate towards dryer, hotter, and longer summers, and shorter and dryer winters, we will see a shift in the density of native chaparral in the Santa Monica mountains, and possibly an influx of non-native species. We tested this hypothesis by choosing three study sites that were on north/south ridgelines to simulate a dryer, harsher climate (south) and a more temperate climate (north). Using the point-quarter method to measure the …

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Climate Change, Presidential Power, And Leadership: "We Can't Wait", Chris Wold Jan 2012

Climate Change, Presidential Power, And Leadership: "We Can't Wait", Chris Wold

Case Western Reserve Journal of International Law

No abstract provided.

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Sea-Level Rise And Its Impact On Vulnerable States: Four Examples, Ann Powers Jan 2012

Sea-Level Rise And Its Impact On Vulnerable States: Four Examples, Ann Powers

Elisabeth Haub School of Law Faculty Publications

This article first examines the physical, cultural, and economic backgrounds of four vulnerable states—Tuvalu, Seychelles, Maldives, and Bangladesh—and discusses the extent to which each might be affected by sea-level rise. It then considers, in turn, the legal implications of the current rules on maritime delimitation under UNCLOS for the states, along with their efforts to adapt to sea-level rise.

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Extinction Risk And Bottlenecks In The Conservation Of Charismatic Marine Species, Loren Mcclenachan, Andrew B. Cooper, Kent E. Carpenter, Nicholas K. Dulvy Jan 2012

Extinction Risk And Bottlenecks In The Conservation Of Charismatic Marine Species, Loren Mcclenachan, Andrew B. Cooper, Kent E. Carpenter, Nicholas K. Dulvy

Biological Sciences Faculty Publications

The oceans face a biodiversity crisis, but the degree and scale of extinction risk remains poorly characterized. Charismatic species are most likely to gar- ner greatest support for conservation and thus provide a best-case scenario of the status of marine biodiversity. We summarize extinction risk and diagnose impediments to successful conservation for 1,568 species in 16 families of marine animals in the movie Finding Nemo. Sixteen percent (12–34%) of those that have been evaluated are threatened, ranging from 9% (7–28%) of bony fishes to 100% (83–100%) of marine turtles. A lack of scientific knowledge impedes analysis of threat status …

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Diversity And Distribution Of Mongolian Fish: Recent State, Trends And Studies, Yuri Dgebuadze, Bud Mendsaikhan, Ayurin Dulmaa Jan 2012

Diversity And Distribution Of Mongolian Fish: Recent State, Trends And Studies, Yuri Dgebuadze, Bud Mendsaikhan, Ayurin Dulmaa

Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298

The studies in recent years (2000-2011) have allowed to make more precise the list and ranges of Mongolian fish. This is connected with new findings as well as the continuing process of invasion of alien species. Climate change and increase of human impact transformed ranges and local distribution of fish during last 30 years. Bias on ratio of ecological guilds, number of pathological findings are increasing, and declining of local diversity, rate of growth and fecundity of many species of fish are observed. In the course of long-term observation was confirmed periodically drying of waters of the Central Asian Lake …

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Denguetools: Innovative Tools And Strategies For The Surveillance And Control Of Dengue, Annelies Wilder-Smith, Karl Erik Renhorn, Hasitha Tissera, Sazaly Abubakar, Luke Alphey, Pattamaporn Kittayapong, Steve Lindsay, James Logan, Christoph Hatz, Paul Reiter, Joacim Rocklöv, Peter Byass, Valerie R. Louis, Yesim Tozan, Eduardo Massad, Antonio Tenorio, Christophe Lagneau, Gregory L'Ambert, David Brooks, Johannah Wegerdt, Duane Gubler Jan 2012

Denguetools: Innovative Tools And Strategies For The Surveillance And Control Of Dengue, Annelies Wilder-Smith, Karl Erik Renhorn, Hasitha Tissera, Sazaly Abubakar, Luke Alphey, Pattamaporn Kittayapong, Steve Lindsay, James Logan, Christoph Hatz, Paul Reiter, Joacim Rocklöv, Peter Byass, Valerie R. Louis, Yesim Tozan, Eduardo Massad, Antonio Tenorio, Christophe Lagneau, Gregory L'Ambert, David Brooks, Johannah Wegerdt, Duane Gubler

Research Publications (2011 to 2015)

Dengue fever is a mosquito-borne viral disease estimated to cause about 230 million infections worldwide every year, of which 25,000 are fatal. Global incidence has risen rapidly in recent decades with some 3.6 billion people, over half of the world's population, now at risk, mainly in urban centres of the tropics and subtropics. Demographic and societal changes, in particular urbanization, globalization, and increased international travel, are major contributors to the rise in incidence and geographic expansion of dengue infections. Major research gaps continue to hamper the control of dengue. The European Commission launched a call under the 7th Framework Programme …

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Linking Nitrogen Biogeochemistry To Different Stages Of Wetland Soil Development In The Mississippi River Delta, Louisiana, Kelly Marie Henry Jan 2012

Linking Nitrogen Biogeochemistry To Different Stages Of Wetland Soil Development In The Mississippi River Delta, Louisiana, Kelly Marie Henry

LSU Doctoral Dissertations

Extensive wetland loss and nutrient-enhanced eutrophication occur across the Mississippi River delta and include newly emergent landscapes, in the early stages of ecological succession, and older landscape formations, with fully developed ecological communities. Here I tested how the anthropogenic effects of a climate-induced vegetation shift, an oil spill, and nitrate-enrichment regulate the principal environmental factors controlling nutrient biogeochemistry in wetland soils at different stages of development throughout the Mississippi River delta. In the older, transgressing Barataria basin, there was no clear effect of the climate-induced species shift from Spartina alterniflora Loisel to Avicennia germinans L. on soil nutrient chemistry. Observed …

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An Introduction To Ecology Of Infectious Diseases - Oysters And Estuaries, Eileen E. Hofmann, Susan E. Ford Jan 2012

An Introduction To Ecology Of Infectious Diseases - Oysters And Estuaries, Eileen E. Hofmann, Susan E. Ford

OES Faculty Publications

Infectious diseases are recognized as an important factor regulating marine ecosystems (Harvell et al., 1999, 2002, 2004; Porter et al., 2001; McCallum et al., 2004; Ward and Lafferty, 2004; Stewart et al., 2008; Bienfang et al., 2011). Many of the organisms affected by marine diseases have important ecological roles in estuarine and coastal environments and some are also commercially important. Outbreaks of infectious diseases in these environments, referred to as epizootics, can produce significant population declines and extinctions, both of which threaten biodiversity, food web interactions, and ecosystem productivity (Harvell et al., 2002, 2004).

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Deglacial Variability Of Antarctic Intermediate Water Penetration Into The North Atlantic From Authigenic Neodymium Isotope Ratios, Ruifang C. Xie, Franco Marcantonio, Matthew W. Schmidt Jan 2012

Deglacial Variability Of Antarctic Intermediate Water Penetration Into The North Atlantic From Authigenic Neodymium Isotope Ratios, Ruifang C. Xie, Franco Marcantonio, Matthew W. Schmidt

OES Faculty Publications

Understanding intermediate water circulation across the last deglacial is critical in assessing the role of oceanic heat transport associated with Atlantic Meridional Overturning Circulation variability across abrupt climate events. However, the links between intermediate water circulation and abrupt climate events such as the Younger Dryas (YD) and Heinrich Event 1 (H1) are still poorly constrained. Here, we reconstruct changes in Antarctic Intermediate Water (AAIW) circulation in the subtropical North Atlantic over the past 25 kyr by measuring authigenic neodymium isotope ratios in sediments from two sites in the Florida Straits. Our authigenic Nd isotope records suggest that there was little …

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Rules For Playing God: The Need For Assisted Migration & New Regulation, Jessica Kabaz-Gomez Jan 2012

Rules For Playing God: The Need For Assisted Migration & New Regulation, Jessica Kabaz-Gomez

Animal Law Review

Climate change is quickly transforming habitats. Species in affected regions are facing extinction as they are unable to migrate to suitable environments. This Note discusses assisted migration, the intentional human-assisted movement of imperiled species to suitable habitats outside of their historic range, as an important—though controversial—conservation tool. There are, however, no comprehensive assisted migration regulations in the United States. This Note argues that the U.S. Fish & Wildlife Service (FWS) should be the agency to issue regulations regarding assisted migration because FWS already has broad authority under the Endangered Species Act to conserve wildlife. This Note proposes that new regulations …

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Responses Of Antarctic Pack-Ice Seals To Environmental Change And Increasing Krill Fishing, Jaume Forcada, Philip N. Trathan, Peter L. Boveng, Ian L. Boyd, Jennifer M. Burns, Daniel P. Costa, Michael Fedak, Tracey L. Rogers, Colin J. Southwell Jan 2012

Responses Of Antarctic Pack-Ice Seals To Environmental Change And Increasing Krill Fishing, Jaume Forcada, Philip N. Trathan, Peter L. Boveng, Ian L. Boyd, Jennifer M. Burns, Daniel P. Costa, Michael Fedak, Tracey L. Rogers, Colin J. Southwell

United States Department of Commerce: Staff Publications

The compound effects of changing habitats, ecosystem interactions, and fishing practices have implications for the management of Antarctic krill and conservation of its predators. For Antarctic pack-ice seals, an important group of krill predators, we estimate the density and krill consumption in the West Antarctic Peninsula (WAP)–Western Weddell Sea area, the main fishery region; and we consider long-term changes in suitable pack-ice habitat, increased fishing pressure and potential krill declines based upon predictions from declines in sea ice cover. More than 3 million crabeater seals consumed over 12 million tonnes of krill each year. This was approximately 17% of the …

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Estimated Change In Tundra Ecosystem Function Near Barrow, Alaska Between 1972 And 2010, M. J. Lara, S. Villarreal, D. R. Johnson, R. D. Hollister, P. J. Webber, C. E. Tweedie Jan 2012

Estimated Change In Tundra Ecosystem Function Near Barrow, Alaska Between 1972 And 2010, M. J. Lara, S. Villarreal, D. R. Johnson, R. D. Hollister, P. J. Webber, C. E. Tweedie

Peer Reviewed Publications

How the greening of Arctic landscapes manifests as a change in ecosystem structure and function remains largely unknown. This study investigates the likely implications of plant community change on ecosystem function in tundra near Barrow, Alaska. We use structural data from marked plots, established in 1972 and resampled in 1999, 2008 and 2010 to assess plant community change. Ecosystem functional studies were made close to peak growing season in 2008 and 2010 on destructive plots adjacent to marked plots and included measurement of land–atmosphere CH4 and CO2 exchange, hyperspectral reflectance, albedo, water table height, soil moisture, and plant species cover …

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Tundra Vegetation Change Near Barrow, Alaska (1972–2010), S. Villarreal, R. D. Hollister, D. R. Johnson, M. J. Lara, P. J. Webber, C. E. Tweedie Jan 2012

Tundra Vegetation Change Near Barrow, Alaska (1972–2010), S. Villarreal, R. D. Hollister, D. R. Johnson, M. J. Lara, P. J. Webber, C. E. Tweedie

Peer Reviewed Publications

Knowledge of how arctic plant communities will respond to change has been largely derived from plot level experimental manipulation, not from trends of decade time scale environmental observations. This study documents plant community change in 330 marked plots at 33 sites established during the International Biological Program near Barrow, Alaska in 1972. Plots were resampled in 1999, 2008 and 2010 for species cover and presence. Cluster analysis identified nine plant communities in 1972. Non-metric multidimensional scaling (NMS) indicates that plant communities have changed in different ways over time, and that wet communities have changed more than dry communities. The relative …

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From Pond To Pump: Microalgae As A Feedstock For Biodiesel, Anna H. Leavitt Jan 2012

From Pond To Pump: Microalgae As A Feedstock For Biodiesel, Anna H. Leavitt

Honors Theses

The global reliance on fossil fuels is an unsustainable practice that has led to the depletion of finite resources and the accumulation of greenhouse gases in the atmosphere, leading to global climate change (Demirbas 2010). Transportation accounts for about a third of carbon dioxide (CO2) emissions in the United States. Demand for oil continues to increase and resources are becoming more uncertain. Increased production of renewable fuels such as biofuels can help ease the dependence on fossil fuels. Although interest and production in biofuels has been increasing in the past decade, current feedstocks do not meet efficiency needs and some …

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Global Environmental Outlook 5, United Nations Environment Programme: Chapter 17, Global Responses, Maria Ivanova, Ivar Baste, Bernice Lee, Satishkumar Belliethathan, Ibrahim Abdel Gelil, Joyeeta Gupta, Peter M. Haas, Zerisenay Habtezion, Achim Halpaap, Jennifer Clare Mohamed-Katerere, Peter King, Marcel Kok, Marcus Lee, Trista Patterson, Vivien Campal, Bradnee Chambers, Melissa Goodall, Slobodan Milutinovic, Felix Preston Jan 2012

Global Environmental Outlook 5, United Nations Environment Programme: Chapter 17, Global Responses, Maria Ivanova, Ivar Baste, Bernice Lee, Satishkumar Belliethathan, Ibrahim Abdel Gelil, Joyeeta Gupta, Peter M. Haas, Zerisenay Habtezion, Achim Halpaap, Jennifer Clare Mohamed-Katerere, Peter King, Marcel Kok, Marcus Lee, Trista Patterson, Vivien Campal, Bradnee Chambers, Melissa Goodall, Slobodan Milutinovic, Felix Preston

Conflict Resolution, Human Security, and Global Governance Faculty Publication Series

Global environmental change such as climate change and the degradation of ecosystem services is heightening risks and reducing opportunities, especially for poor and vulnerable populations. Such change is taking place in an increasingly globalized, urbanized, interconnected and fast-moving world amidst shifting geopolitical power balances. Burgeoning flows of goods and services, capital and technology, information and labour all fuel a growing global population with implications for patterns of consumption and production. The scale and persistence of global environmental problems require sustained collective efforts to meet internationally agreed goals. Responses at national and regional levels are already available, but addressing the underlying …

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Climate Change Policy In The European Union: Examining The Emissions Trading System, Tabitha Marie Cale Jan 2012

Climate Change Policy In The European Union: Examining The Emissions Trading System, Tabitha Marie Cale

LSU Doctoral Dissertations

The European Union Emissions Trading System (EU ETS) is a cap-and-trade program regulating the carbon emissions of specific industrial facilities and is the EU’s primary policy mechanism for complying with emissions reduction targets found in the Kyoto Protocol. This dissertation examines the overall effectiveness of the EU ETS and more specifically what factors explain why some member states are more successful at reducing their carbon emissions than others. OLS and logistic regression models are constructed as well as qualitative case studies of Sweden, Denmark, Portugal and Greece, to examine observed differences in emissions in all 27 EU member states from …

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Can Oysters Crassostrea Virginica Develop Resistance To Dermo Disease In The Field: The Impediment Posed By Climate Cycles, Eric N. Powell, John M. Klinck, Ximing Guo, Eileen E. Hofmann, Susan E. Ford, David Bushek Jan 2012

Can Oysters Crassostrea Virginica Develop Resistance To Dermo Disease In The Field: The Impediment Posed By Climate Cycles, Eric N. Powell, John M. Klinck, Ximing Guo, Eileen E. Hofmann, Susan E. Ford, David Bushek

CCPO Publications

Populations of eastern oysters, Crassostrea virginica, are commonly limited by mortality from dermo disease. Little development of resistance to Perkinsus marinus, the dermo pathogen, has occurred, despite the high mortality rates and frequency of epizootics. Can the tendency of the parasite to exhibit cyclic epizootics limit the oyster's response to the disease despite the presence of alleles apparently conferring disease resistance? We utilize a gene-based population dynamics model to simulate the development of disease resistance in Crassostrea virginica populations exposed to cyclic mortality encompassing periodicities expected of dermo disease over the geographic range at which epizootics have been …

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Oceanic Controls On The Mass Balance Of Wilkins Ice Shelf, Antarctica, Laurie Padman, Daniel P. Costs, M. S. Dinniman, Helen A. Fricker, Michael E. Goebel, Luis A. Huckstadt, Angelika Humbert, Ian Joughin, Jan T. M. Lenaerts, Stefan R. M. Ligtenberg, Ted Scambos, Michiel R. Van Den Broeke Jan 2012

Oceanic Controls On The Mass Balance Of Wilkins Ice Shelf, Antarctica, Laurie Padman, Daniel P. Costs, M. S. Dinniman, Helen A. Fricker, Michael E. Goebel, Luis A. Huckstadt, Angelika Humbert, Ian Joughin, Jan T. M. Lenaerts, Stefan R. M. Ligtenberg, Ted Scambos, Michiel R. Van Den Broeke

CCPO Publications

Several Antarctic Peninsula (AP) ice shelves have lost significant fractions of their volume over the past decades, coincident with rapid regional climate change. Wilkins Ice Shelf (WIS), on the western side of the AP, is the most recent, experiencing a sequence of large calving events in 2008 and 2009. We analyze the mass balance for WIS for the period 1992-2008 and find that the averaged rate of ice-shelf thinning was similar to 0.8 m a(-1), driven by a mean basal melt rate of < w(b)> = 1.3 +/- 0.4 m a(-1). Interannual variability was large, associated with changes in both surface mass …

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Planetarian Identity Formation And The Relocalization Of Environmental Law, Sarah Krakoff Jan 2012

Planetarian Identity Formation And The Relocalization Of Environmental Law, Sarah Krakoff

Publications

Local food, local work, local energy production--all are hallmarks of a resurgence of localism throughout contemporary environmental thought and action. The renaissance of localism might be seen as a retreat from the world's global environmental problems. This Article maintains, however, that some forms of localism are actually expressions, appropriate ones, of a planetary environmental consciousness. This Article's centerpiece is an in-depth evaluation of local climate action initiatives, including interviews with participants, as well as other data and observations about their ethics, attitudes, behaviors, and motivations. The values and identities being forged in these initiatives form the basis for timely conceptions …

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Managing Climate Change Through Biological Sequestration: Open Space Law Redux, John R. Nolon Jan 2012

Managing Climate Change Through Biological Sequestration: Open Space Law Redux, John R. Nolon

Elisabeth Haub School of Law Faculty Publications

Climate change management involves strategies that mitigate its causes and adapt human communities to its consequences. This article describes a legal strategy that does both: a national biological sequestration policy. This policy will increase the amount of carbon dioxide emissions that biological sequestration currently removes from the atmosphere and will enable human settlements to adapt to the harsh effects of a changing climate, while realizing a number of other objectives that preserved open space preservation achieves. The article sketches the influences of international and national climate change law, which largely ignore the benefits of biological sequestration on privately owned land …

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Deglaciation Explains Bat Extinction In The Caribbean, Lilian M. Dávalos, Amy L. Russell Jan 2012

Deglaciation Explains Bat Extinction In The Caribbean, Lilian M. Dávalos, Amy L. Russell

Open Access Publishing Support Funded Articles

Ecological factors such as changing climate on land and interspecific competition have been debated as possible causes of postglacial Caribbean extinction. These hypotheses, however, have not been tested against a null model of climate- driven postglacial area loss. Here, we use a new Quaternary mammal database and deep-sea bathymetry to estimate species–area relationships (SARs) at present and during the Last Glacial Maximum (LGM) for bats of the Caribbean, and to model species loss as a function of area loss from rising sea level. Island area was a significant predictor of species richness in the Bahamas, Greater Antilles, and Lesser Antilles …

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