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Articles 91 - 112 of 112
Full-Text Articles in Human Ecology
Mainstreaming Early Warning Systems In Development And Planning Processes: Multilevel Implementation Of Sendai Framework In Indus And Sahel, Asim Zia, Courtney Hammond Wagner
Mainstreaming Early Warning Systems In Development And Planning Processes: Multilevel Implementation Of Sendai Framework In Indus And Sahel, Asim Zia, Courtney Hammond Wagner
College of Agriculture and Life Sciences Faculty Publications
The third UN World Congress on Disaster Risk Reduction, held in Sendai, Japan in March 2015, agreed on a new framework to guide disaster risk reduction policy and practice for the next 15 years. The Sendai Framework for Disaster Risk Reduction 2015–2030 (SFDRR) leaves important implementation issues unspecified and potentially creates both problems and opportunities for complex, multilevel governance systems in coping with hazards and disastrous events. Early warning systems (EWS), if built into the mainstream of planning for development and disaster relief and recovery, could present a significant opportunity to realize many SFDRR goals. We explore the complexities of …
Pleistocene Relative Sea Levels In The Chesapeake Bay Region And Their Implications For The Next Century, Benjamin D. Dejong, Paul R. Bierman, Wayne L. Newell, Tammy M. Rittenour, Shannon A. Mahan, Greg Balco, Dylan H. Rood
Pleistocene Relative Sea Levels In The Chesapeake Bay Region And Their Implications For The Next Century, Benjamin D. Dejong, Paul R. Bierman, Wayne L. Newell, Tammy M. Rittenour, Shannon A. Mahan, Greg Balco, Dylan H. Rood
College of Arts and Sciences Faculty Publications
Today, relative sea-level rise (3.4 mm/yr) is faster in the Chesapeake Bay region than any other location on the Atlantic coast of North America, and twice the global average eustatic rate (1.7 mm/yr). Dated interglacial deposits suggest that relative sea levels in the Chesapeake Bay region deviate from global trends over a range of timescales. Glacio-isostatic adjustment of the land surface from loading and unloading of continental ice is likely responsible for these deviations, but our understanding of the scale and timeframe over which isostatic response operates in this region remains incomplete because dated sea-level proxies are mostly limited to …
Whales As Marine Ecosystem Engineers, Joe Roman, James A. Estes, Lyne Morissette, Craig Smith, Daniel Costa, James Mccarthy, J. B. Nation, Stephen Nicol, Andrew Pershing, Victor Smetacek
Whales As Marine Ecosystem Engineers, Joe Roman, James A. Estes, Lyne Morissette, Craig Smith, Daniel Costa, James Mccarthy, J. B. Nation, Stephen Nicol, Andrew Pershing, Victor Smetacek
Rubenstein School of Environment and Natural Resources Faculty Publications
Baleen and sperm whales, known collectively as the great whales, include the largest animals in the history of life on Earth. With high metabolic demands and large populations, whales probably had a strong influence on marine ecosystems before the advent of industrial whaling: as consumers of fish and invertebrates; as prey to other large-bodied predators; as reservoirs of and vertical and horizontal vectors for nutrients; and as detrital sources of energy and habitat in the deep sea. The decline in great whale numbers, estimated to be at least 66% and perhaps as high as 90%, has likely altered the structure …
Impacts Of Projected Climate Change Over The Lake Champlain Basin In Vermont, Justin Guilbert, Brian Beckage, Jonathan M. Winter, Radley M. Horton, Timothy Perkins, Arne Bomblies
Impacts Of Projected Climate Change Over The Lake Champlain Basin In Vermont, Justin Guilbert, Brian Beckage, Jonathan M. Winter, Radley M. Horton, Timothy Perkins, Arne Bomblies
College of Agriculture and Life Sciences Faculty Publications
The Lake Champlain basin is a critical ecological and socioeconomic resource of the northeastern United States and southern Quebec, Canada. While general circulation models (GCMs) provide an overview of climate change in the region, they lack the spatial and temporal resolution necessary to fully anticipate the effects of rising global temperatures associated with increasing greenhouse gas concentrations. Observed trends in precipitation and temperature were assessed across the Lake Champlain basin to bridge the gap between global climate change and local impacts. Future shifts in precipitation and temperature were evaluated as well as derived indices, including maple syrup production, days above …
Shade Coffee: Update On A Disappearing Refuge For Biodiversity, Shalene Jha, Christopher M. Bacon, Stacy M. Philpott, V. Ernesto Méndez, Peter Läderach, Robert A. Rice
Shade Coffee: Update On A Disappearing Refuge For Biodiversity, Shalene Jha, Christopher M. Bacon, Stacy M. Philpott, V. Ernesto Méndez, Peter Läderach, Robert A. Rice
College of Agriculture and Life Sciences Faculty Publications
In the past three decades, coffee cultivation has gained widespread attention for its crucial role in supporting local and global biodiversity. In this synthetic Overview, we present newly gathered data that summarize how global patterns in coffee distribution and shade vegetation have changed and discuss implications for biodiversity, ecosystem services, and livelihoods. Although overall cultivated coffee area has decreased by 8% since 1990, coffee production and agricultural intensification have increased in many places and shifted globally, with production expanding in Asia while contracting in Africa. Ecosystem services such as pollination, pest control, climate regulation, and nutrient sequestration are generally greater …
Coupling Self-Organizing Maps With A Naïve Bayesian Classifier: Stream Classification Studies Using Multiple Assessment Data, Nikolaos Fytilis, Donna M. Rizzo
Coupling Self-Organizing Maps With A Naïve Bayesian Classifier: Stream Classification Studies Using Multiple Assessment Data, Nikolaos Fytilis, Donna M. Rizzo
College of Engineering and Mathematical Sciences Faculty Publications
Organizing or clustering data into natural groups is one of the most fundamental aspects of understanding and mining information. The recent explosion in sensor networks and data storage associated with hydrological monitoring has created a huge potential for automating data analysis and classification of large, high-dimensional data sets. In this work, we develop a new classification tool that couples a Naïve Bayesian classifier with a neural network clustering algorithm (i.e., Kohonen Self-Organizing Map (SOM)). The combined Bayesian-SOM algorithm reduces classification error by leveraging the Bayesian's ability to accommodate parameter uncertainty with the SOM's ability to reduce high-dimensional data to lower …
Beyond Climate-Smart Agriculture: Toward Safe Operating Spaces For Global Food Systems, Henry Neufeldt, Molly Jahn, Bruce M. Campbell, John R. Beddington, Fabrice Declerck, Alessandro De Pinto, Jay Gulledge, Jonathan Hellin, Mario Herrero, Andy Jarvis, David Lezaks, Holger Meinke, Todd Rosenstock, Mary Scholes, Robert Scholes, Sonja Vermeulen, Eva Wollenberg, Robert Zougmoré
Beyond Climate-Smart Agriculture: Toward Safe Operating Spaces For Global Food Systems, Henry Neufeldt, Molly Jahn, Bruce M. Campbell, John R. Beddington, Fabrice Declerck, Alessandro De Pinto, Jay Gulledge, Jonathan Hellin, Mario Herrero, Andy Jarvis, David Lezaks, Holger Meinke, Todd Rosenstock, Mary Scholes, Robert Scholes, Sonja Vermeulen, Eva Wollenberg, Robert Zougmoré
Rubenstein School of Environment and Natural Resources Faculty Publications
Agriculture is considered to be "climate-smart" when it contributes to increasing food security, adaptation and mitigation in a sustainable way. This new concept now dominates current discussions in agricultural development because of its capacity to unite the agendas of the agriculture, development and climate change communities under one brand. In this opinion piece authored by scientists from a variety of international agricultural and climate research communities, we argue that the concept needs to be evaluated critically because the relationship between the three dimensions is poorly understood, such that practically any improved agricultural practice can be considered climate-smart. This lack of …
Payments For Ecosystem Services And The Fatal Attraction Of Win-Win Solutions, R. Muradian, M. Arsel, L. Pellegrini, F. Adaman, B. Aguilar, B. Agarwal, E. Corbera, D. Ezzine De Blas, J. Farley, G. Froger, E. Garcia-Frapolli, E. Gómez-Baggethun, J. Gowdy
Payments For Ecosystem Services And The Fatal Attraction Of Win-Win Solutions, R. Muradian, M. Arsel, L. Pellegrini, F. Adaman, B. Aguilar, B. Agarwal, E. Corbera, D. Ezzine De Blas, J. Farley, G. Froger, E. Garcia-Frapolli, E. Gómez-Baggethun, J. Gowdy
College of Agriculture and Life Sciences Faculty Publications
In this commentary we critically discuss the suitability of payments for ecosystem services and the most important challenges they face. While such instruments can play a role in improving environmental governance, we argue that over-reliance on payments as win-win solutions might lead to ineffective outcomes, similar to earlier experience with integrated conservation and development projects. Our objective is to raise awareness, particularly among policy makers and practitioners, about the limitations of such instruments and to encourage a dialogue about the policy contexts in which they might be appropriate. © 2013 Wiley Periodicals, Inc.
Forest Restoration And Parasitoid Wasp Communities In Montane Hawai'i, Rachelle K. Gould, Liba Pejchar, Sara G. Bothwell, Berry Brosi, Stacie Wolny, Chase D. Mendenhall, Gretchen Daily
Forest Restoration And Parasitoid Wasp Communities In Montane Hawai'i, Rachelle K. Gould, Liba Pejchar, Sara G. Bothwell, Berry Brosi, Stacie Wolny, Chase D. Mendenhall, Gretchen Daily
Rubenstein School of Environment and Natural Resources Faculty Publications
Globally, most restoration efforts focus on re-creating the physical structure (flora or physical features) of a target ecosystem with the assumption that other ecosystem components will follow. Here we investigate that assumption by documenting biogeographical patterns in an important invertebrate taxon, the parasitoid wasp family Ichneumonidae, in a recently reforested Hawaiian landscape. Specifically, we test the influence of (1) planting configurations (corridors versus patches), (2) vegetation age, (3) distance from mature native forest, (4) surrounding tree cover, and (5) plant community composition on ichneumonid richness, abundance, and composition. We sampled over 7,000 wasps, 96.5% of which were not native to …
New England's Community Forests: Comparing A Regional Model To Iccas, Martha West Lyman, Cecilia Danks, Maureen Mcdonough
New England's Community Forests: Comparing A Regional Model To Iccas, Martha West Lyman, Cecilia Danks, Maureen Mcdonough
Rubenstein School of Environment and Natural Resources Faculty Publications
This paper examines the ways in which some forms of community forests in the northeastern United States could be considered Indigenous Peoples' and Community Conserved Territories and Areas (ICCAs), based on the work conducted by the Community Forest Collaborative, a partnership of four non-governmental organisations (NGOs) in the US. The Collaborative defined a Community Forest Model for northern New England, conducted research on the economic, social, community, and conservation values of the Community Forest Model and developed case studies on five community forest projects. Five key attributes of ICCAs were selected and used to compare with characteristics of the Collaborative's …
Monetary And Fiscal Policies For A Finite Planet, Joshua Farley, Matthew Burke, Gary Flomenhoft, Brian Kelly, D. Forrest Murray, Stephen Posner, Matthew Putnam, Adam Scanlan, Aaron Witham
Monetary And Fiscal Policies For A Finite Planet, Joshua Farley, Matthew Burke, Gary Flomenhoft, Brian Kelly, D. Forrest Murray, Stephen Posner, Matthew Putnam, Adam Scanlan, Aaron Witham
Peer-Reviewed Studies
Current macroeconomic policy promotes continuous economic growth. Unemployment, poverty and debt are associated with insufficient growth. Economic activity depends upon the transformation of natural materials, ultimately returning to the environment as waste. Current levels of economic throughput exceed the planet's carrying capacity. As a result of poorly constructed economic institutions, society faces the unacceptable choice between ecological catastrophe and human misery. A transition to a steady-state economy is required, characterized by a rate of throughput compatible with planetary boundaries. This paper contributes to the development of a steady-state economy by addressing US monetary and fiscal policies. A steady-state monetary policy …
Quantifying Temporal Change In Biodiversity: Challenges And Opportunities, Maria Dornelas, Anne E. Magurran, Stephen T. Buckland, Anne Chao, Robin L. Chazdon, Robert K. Colwell, Tom Curtis, Kevin J. Gaston, Nicholas J. Gotelli, Matthew A. Kosnik, Brian Mcgill, Jenny L. Mccune, Hélène Morlon, Peter J. Mumby, Lise Øvreås, Angelika Studeny, Mark Vellend
Quantifying Temporal Change In Biodiversity: Challenges And Opportunities, Maria Dornelas, Anne E. Magurran, Stephen T. Buckland, Anne Chao, Robin L. Chazdon, Robert K. Colwell, Tom Curtis, Kevin J. Gaston, Nicholas J. Gotelli, Matthew A. Kosnik, Brian Mcgill, Jenny L. Mccune, Hélène Morlon, Peter J. Mumby, Lise Øvreås, Angelika Studeny, Mark Vellend
College of Arts and Sciences Faculty Publications
Growing concern about biodiversity loss underscores the need to quantify and understand temporal change. Here, we review the opportunities presented by biodiversity time series, and address three related issues: (i) recognizing the characteristics of temporal data; (ii) selecting appropriate statistical procedures for analysing temporal data; and (iii) inferring and forecasting biodiversity change. With regard to the first issue, we draw attention to defining characteristics of biodiversity time series-lack of physical boundaries, unidimensionality, autocorrelation and directionality-that inform the choice of analytic methods. Second, we explore methods of quantifying change in biodiversity at different timescales, noting that autocorrelation can be viewed as …
Land Use Adaptation To Climate Change: Economic Damages From Land-Falling Hurricanes In The Atlantic And Gulf States Of The Usa, 1900-2005, Asim Zia
College of Agriculture and Life Sciences Faculty Publications
Global climate change, especially the phenomena of global warming, is expected to increase the intensity of land-falling hurricanes. Societal adaptation is needed to reduce vulnerability from increasingly intense hurricanes. This study quantifies the adaptation effects of potentially policy driven caps on housing densities and agricultural cover in coastal (and adjacent inland) areas vulnerable to hurricane damages in the Atlantic and Gulf Coastal regions of the U.S. Time series regressions, especially Prais-Winston and Autoregressive Moving Average (ARMA) models, are estimated to forecast the economic impacts of hurricanes of varying intensity, given that various patterns of land use emerge in the Atlantic …
Ecosystem Services: The Economics Debate, Joshua Farley
Ecosystem Services: The Economics Debate, Joshua Farley
College of Agriculture and Life Sciences Faculty Publications
The goal of this paper is to illuminate the debate concerning the economics of ecosystem services. The sustainability debate focuses on whether or not ecosystem services are essential for human welfare and the existence of ecological thresholds. If ecosystem services are essential, then marginal analysis and monetary valuation are inappropriate tools in the vicinity of thresholds. The justice debate focuses on who is entitled to ecosystem services and the ecosystem structure that generates them. Answers to these questions have profound implications for the choice of suitable economic institutions. The efficiency debate concerns both the goals of economic activity and the …
Underestimating The Costs Of Conservation In Southeast Asia, David P. Edwards, Brendan Fisher, Xingli Giam, David S. Wilcove
Underestimating The Costs Of Conservation In Southeast Asia, David P. Edwards, Brendan Fisher, Xingli Giam, David S. Wilcove
Rubenstein School of Environment and Natural Resources Faculty Publications
No abstract provided.
Randomization Tests For Quantifying Species Importance To Ecosystem Function, Nicholas J. Gotelli, Werner Ulrich, Fernando T. Maestre
Randomization Tests For Quantifying Species Importance To Ecosystem Function, Nicholas J. Gotelli, Werner Ulrich, Fernando T. Maestre
College of Arts and Sciences Faculty Publications
1. Quantifying the contribution of different species to ecosystem function is an important challenge. We introduce simple randomization tests (and software) for quantifying the average effect of species on ecosystem variables measured in multiple plots with and without the presence of a particular species. These randomization tests formalize the analysis of uncontrolled 'natural experiments' and quantify species effects in standardized deviation units. 2.We tested the method with data on ecosystem function in biological soil crust assemblages of lichens in semi-arid gypsum outcrops in central Spain. In sixty-three 50cm×50cm sample plots, we measured the presence and percentage cover of 17 species …
The Limits To Prediction In Ecological Systems, Brian Beckage, Louis J. Gross, Stuart Kauffman
The Limits To Prediction In Ecological Systems, Brian Beckage, Louis J. Gross, Stuart Kauffman
College of Agriculture and Life Sciences Faculty Publications
Predicting the future trajectories of ecological systems is increasingly important as the magnitude of anthropogenic perturbation of the earth systems grows.We distinguish between two types of predictability: the intrinsic or theoretical predictability of a system and the realized predictability that is achieved using available models and parameterizations. We contend that there are strong limits on the intrinsic predictability of ecological systems that arise from inherent characteristics of biological systems. While the realized predictability of ecological systems can be limited by process and parameter misspecification or uncertainty, we argue that the intrinsic predictability of ecological systems is widely and strongly limited …
Heating Up The Forest: Open-Top Chamber Warming Manipulation Of Arthropod Communities At Harvard And Duke Forests, Shannon L. Pelini, Francis P. Bowles, Aaron M. Ellison, Nicholas J. Gotelli, Nathan J. Sanders, Robert R. Dunn
Heating Up The Forest: Open-Top Chamber Warming Manipulation Of Arthropod Communities At Harvard And Duke Forests, Shannon L. Pelini, Francis P. Bowles, Aaron M. Ellison, Nicholas J. Gotelli, Nathan J. Sanders, Robert R. Dunn
College of Arts and Sciences Faculty Publications
1.Recent observations indicate that climatic change is altering biodiversity, and models suggest that the consequences of climate change will differ across latitude. However, long-term experimental field manipulations that directly test the predictions about organisms' responses to climate change across latitude are lacking. Such experiments could provide a more mechanistic understanding of the consequences of climate change on ecological communities and subsequent changes in ecosystem processes, facilitating better predictions of the effects of future climate change. 2.This field experiment uses octagonal, 5-m-diameter (c.22m 3) open-top chambers to simulate warming at northern (Harvard Forest, Massachusetts) and southern (Duke Forest, North Carolina) hardwood …
The High Costs Of Conserving Southeast Asia's Lowland Rainforests, Brendan Fisher, David P. Edwards, Xingli Giam, David S. Wilcove
The High Costs Of Conserving Southeast Asia's Lowland Rainforests, Brendan Fisher, David P. Edwards, Xingli Giam, David S. Wilcove
Rubenstein School of Environment and Natural Resources Faculty Publications
Mechanisms that mitigate greenhouse-gas emissions via forest conservation have been portrayed as a cost-effective approach that can also protect biodiversity and vital ecosystem services. However, the costs of conservation - including opportunity costs - are spatially heterogeneous across the globe. The lowland rainforests of Southeast Asia represent a unique nexus of large carbon stores, imperiled biodiversity, large stores of timber, and high potential for conversion to oil-palm plantations, making this region one where understanding the costs of conservation is critical. Previous studies have underestimated the gap between conservation costs and conversion benefits in Southeast Asia. Using detailed logging records, cost …
Incorporating Systems Thinking And Sustainability Within Civil And Environmental Engineering Curricula At Uvm, Nancy J. Hayden, Donna M. Rizzo, Mandar M. Dewoolkar, Lalita Oka, Maureen Neumann
Incorporating Systems Thinking And Sustainability Within Civil And Environmental Engineering Curricula At Uvm, Nancy J. Hayden, Donna M. Rizzo, Mandar M. Dewoolkar, Lalita Oka, Maureen Neumann
College of Engineering and Mathematical Sciences Faculty Publications
As part of an NSF Department Level Reform (DLR) grant, the civil and environmental engineering programs at the University of Vermont (UVM) incorporated systems thinking and a systems approach to engineering problem solving within their programs. A systems thinking approach regards social, environmental and economic factors as necessary components of the problem solution. Because it is a whole systems approach it also encompasses sustainability. We have integrated systems thinking in the following ways; 1) new material has been included into key courses (e.g. the first-year introductory and senior design courses), 2) a sequence of three related environmental and transportation systems …
Cross-Scale Value Trade-Offs In Managing Social-Ecological Systems: The Politics Of Scale In Ruaha National Park, Tanzania, Asim Zia, Paul Hirsch, Alexander Songorwa, David R. Mutekanga, Sheila O'Connor, Thomas Mcshane, Peter Brosius, Bryan Norton
Cross-Scale Value Trade-Offs In Managing Social-Ecological Systems: The Politics Of Scale In Ruaha National Park, Tanzania, Asim Zia, Paul Hirsch, Alexander Songorwa, David R. Mutekanga, Sheila O'Connor, Thomas Mcshane, Peter Brosius, Bryan Norton
College of Agriculture and Life Sciences Faculty Publications
Management of social-ecological systems takes place amidst complex governance processes and cross-scale institutional arrangements that are mediated through politics of scale. Each management scenario generates distinct cross-scale trade-offs in the distribution of pluralistic values. This study explores the hypothesis that conservation-oriented management scenarios generate higher value for international and national scale social organizations, whereas mixed or more balanced management scenarios generate higher value for local scale social organizations. This hypothesis is explored in the management context of Ruaha National Park (RNP), Tanzania, especially the 2006 expansion of RNP that led to the eviction of many pastoralists and farmers. Five management …
Protecting Degraded Rainforests: Enhancement Of Forest Carbon Stocks Under Redd+, David P. Edwards, Brendan Fisher, Emily Boyd
Protecting Degraded Rainforests: Enhancement Of Forest Carbon Stocks Under Redd+, David P. Edwards, Brendan Fisher, Emily Boyd
Rubenstein School of Environment and Natural Resources Faculty Publications
The likely Reducing Emissions from Deforestation and Degradation (REDD+) mechanism includes strategies for the enhancement of forest carbon stocks. Recent concerns have been expressed that such enhancement, or restoration, of forest carbon could be counterproductive to biodiversity conservation, because forests are managed as "carbon farms" with the application of intensive silvicultural management that could homogenize diverse degraded rainforests. Restoration increases regeneration rates in degraded forest compared to naturally regenerating forest, and thus could yield significant financial returns for carbon sequestered. Here, we argue that such forest restoration projects are, in fact, likely to provide a number of benefits to biodiversity …