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Climate change

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Modeling Potential Hydrochemical Responses To Climate Change And Increasing Co2 At The Hubbard Brook Experimental Forest Using A Dynamic Biogeochemical Model (Pnet-Bgc), Afshin Pourmokhtaria, Charles T. Driscoll, John L. Campbell, Katharine Hayhoe Jul 2012

Modeling Potential Hydrochemical Responses To Climate Change And Increasing Co2 At The Hubbard Brook Experimental Forest Using A Dynamic Biogeochemical Model (Pnet-Bgc), Afshin Pourmokhtaria, Charles T. Driscoll, John L. Campbell, Katharine Hayhoe

Civil and Environmental Engineering - All Scholarship

Dynamic hydrochemical models are useful tools for understanding and predicting the interactive effects of climate change, atmospheric CO2, and atmospheric deposition on the hydrology and water quality of forested watersheds. We used the biogeochemical model, PnET-BGC, to evaluate the effects of potential future changes in temperature, precipitation, solar radiation, and atmospheric CO2 on pools, concentrations, and fluxes of major elements at the Hubbard Brook Experimental Forest in New Hampshire, United States. Future climate projections used to run PnET-BGC were generated specifically for the Hubbard Brook Experimental Forest with a statistical technique that downscales climate output (e.g., air temperature, precipitation, solar …

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Foraging And Digestive Energetics In Montane And Lowland Salamanders, Cody Lund Barnes Jul 2012

Foraging And Digestive Energetics In Montane And Lowland Salamanders, Cody Lund Barnes

Theses and Dissertations

Thermal physiology substantially limits the distributions of organisms across landscapes. Specifically, the thermal sensitivity of foraging and digestive energetics influence the quantity of energy available for allocating to specific life functions. I hypothesized that foraging and Specific Dynamic Action (SDA) performances would differ between montane endemic and lowland salamander species. I found that foraging energetics differed between the montane endemics, Plethodon ouachitae and P. caddoensis, in comparison to the lowland P. albagula. Differences in foraging energetics were particularly pronounced at the warmest temperature and the montane endemics were more thermally sensitive, suggesting that constraints in foraging energetics influence the elevational …

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Dynamic Modelling Of Silvopastoral Landscape Structure: Scenarios For Future Climate And Land Use, François Gillet, Alexander Peringer Jul 2012

Dynamic Modelling Of Silvopastoral Landscape Structure: Scenarios For Future Climate And Land Use, François Gillet, Alexander Peringer

International Congress on Environmental Modelling and Software

Pasture-woodland landscapes result from a long history ofsilvopastoralism in mountain regions and provide valuable ecosystem services.They include a mosaic of grasslands, forests and wood-pastures, which is theheritage of a multipurpose management in the variable socio-economic andbiophysical context of the last millennium. In the perspective of ongoing climateand land-use changes, it is crucial to assess the resilience and the adaptivecapacity of such socio-ecological systems at different spatial and temporal scales.For this purpose, we developed a hierarchical, process-based, dynamic model,WoodPaM, and we simulated six scenarios of climate change and management ina real landscape of the Swiss Jura Mountains. Realistic climatic scenarios for …

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Estimating Impact Assessment And Adaptation Strategies Under Climate Change Scenarios For Crops At Eu27 Scale, Marcello Donatelli, A. K. Srivastava, G. Duveiller, S. Niemeyer Jul 2012

Estimating Impact Assessment And Adaptation Strategies Under Climate Change Scenarios For Crops At Eu27 Scale, Marcello Donatelli, A. K. Srivastava, G. Duveiller, S. Niemeyer

International Congress on Environmental Modelling and Software

Policy makers at European and national level demand for estimates of potential vulnerability of agricultural production. Estimates are requested specific to province level, and articulated for crops. The base of such estimates is the biophysical representation of crop responses both under conditions of no adaptation, and exploring the level of adaptation which could be acted on autonomously by farmers. However, producing such estimates poses significant challenges due to the usability of climate inputs to simulation models, to reliability and completeness of data, to the level of abstraction to be chosen, and to technological aspects. This study provides an impact assessment …

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

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

CCSLRI Newsletters

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

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New Developments In The Anuclim Bioclimatic Modelling Package, Tingbao Xu, Michael F. Hutchinson Jul 2012

New Developments In The Anuclim Bioclimatic Modelling Package, Tingbao Xu, Michael F. Hutchinson

International Congress on Environmental Modelling and Software

ANUCLIM (Xu and Hutchinson, 2011) is a software package used to support the spatial modelling of environmental and natural resources. It enables users to readily obtain estimates, in point and grid form, of monthly, seasonal and annual mean climate variables from supplied elevation dependent monthly mean climate surfaces and an underlying digital elevation model. The climate surfaces are derived by the ANUSPLIN package (Hutchinson, 2004) and support interrogation at sub-kilometre scale. A key strength of the ANUCLIM package is its ability to generate bioclimatic profiles from known species locations to predict and map species distributions, in both current and projected …

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Impacts Of Upstream Drought And Water Withdrawals On The Health And Survival Of Downstream Estuarine Oyster Populations, Laura E. Petes, Alicia J. Brown, Carley R. Knight Jul 2012

Impacts Of Upstream Drought And Water Withdrawals On The Health And Survival Of Downstream Estuarine Oyster Populations, Laura E. Petes, Alicia J. Brown, Carley R. Knight

Faculty Publications

Increases in the frequency, duration, and severity of regional drought pose major threats to the health and integrity of downstream ecosystems. During 2007-2008, the U.S. southeast experienced one of the most severe droughts on record. Drought and water withdrawals in the upstream watershed led to decreased freshwater input to Apalachicola Bay, Florida, an estuary that is home to a diversity of commercially and ecologically important organisms. This study applied a combination of laboratory experiments and field observations to investigate the effects of reduced freshwater input on Apalachicola oysters. Oysters suffered significant disease-related mortality under high-salinity, drought conditions, particularly during the …

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Implementing Biodiversity Risks In The Classroom - The Educational Software Pronas, Karin Ulbrich, Oliver Schweiger, Josef Settele Jul 2012

Implementing Biodiversity Risks In The Classroom - The Educational Software Pronas, Karin Ulbrich, Oliver Schweiger, Josef Settele

International Congress on Environmental Modelling and Software

Climate change and dramatic loss of biodiversity are essential subjects for EU research. However, little of current knowledge is reaching the young generation. In order to implement biodiversity research into the reality of school education we brought members of the scientific and educational communities together. Educational software has been developed which combines desk (or rather lap-)top work with field experiences by combining virtual excursions with real ones.The software PRONAS shows how scientists handle questions about the impact of climate change on species’ habitats. It makes core results of research projects available for students from 12 to 19 and is freely …

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Development Of A Guideline For Regional And Local Authorities To Adapt To Climate Change - Results Of The Project “Klimpass”, Hardy Pundt, Andrea Heilmann, Enrico Kerwel Jul 2012

Development Of A Guideline For Regional And Local Authorities To Adapt To Climate Change - Results Of The Project “Klimpass”, Hardy Pundt, Andrea Heilmann, Enrico Kerwel

International Congress on Environmental Modelling and Software

The project KLIMPASS was aimed at the development of an adaptation strategy to climate change based on a regional, and local level. The basis of such a strategy is formed by the existing climate change scenarios. The overall goal is to move from a high level of abstraction to context specific conditions, involving local stakeholders and concrete actors. GIS technology was used to process vulnerability maps that support decision-making processes about measures to be implemented envisaging potential climatic threats. This paper describes the overall methodology applied, and focuses later on the GIS-based vulnerability maps.

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Spatio-Temporal Characterisation Of Ecosystem Functions Based On Macro-Habitats, L. Poggio, Alessandro Gimona, Marie Castellazzi, I. Brown Jul 2012

Spatio-Temporal Characterisation Of Ecosystem Functions Based On Macro-Habitats, L. Poggio, Alessandro Gimona, Marie Castellazzi, I. Brown

International Congress on Environmental Modelling and Software

Analysis and forecast of the spatial distribution and dynamics of ecosystem services is an important element of sustainable land management. The aim of this paper is to analyse the spatial and temporal variability of various ecosystem functions using indices derived from remote sensing products. These are applied in macro habitat types in a test area in the River Dee catchment in the north-east of Scotland, with a wide range of morphological features, soils and habitats and providing multi-functional ecosystem services (ESs), such as water quality, soil health, and biodiversity. A set of indices, single and multi-date, were derived from remotely …

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A Eu27 Database Of Daily Weather Data Derived From Climate Change Scenarios For Use With Crop Simulation Models, Marcello Donatelli, Davide Fumagalli, A. Zucchini, G. Duveiller, R. L. Nelson, B. Baruth Jul 2012

A Eu27 Database Of Daily Weather Data Derived From Climate Change Scenarios For Use With Crop Simulation Models, Marcello Donatelli, Davide Fumagalli, A. Zucchini, G. Duveiller, R. L. Nelson, B. Baruth

International Congress on Environmental Modelling and Software

Global Circulation Models (GCM) estimate future climate under scenarios of greenhouse gases emissions. Such estimates include several meteorological parameters but the two direct outputs are air temperature at earth surface and precipitation. The estimates are spatially downscaled using different methodologies, but it is accepted that such data require further processing for use with simulation models. Daily values of solar radiation, wind, air humidity, and at times rainfall may have absolute values which are not realistic, and/or the daily record of data may prove not to be consistent across meteorological variables. The final problem is related to the fact that GCM …

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Adaptation To Climate Change By Agri- Environmental Policy In Finland, Katri Rankinen, Pirjo Peltonen-Sainio, Mikko Laapas, Kalle Sippel Jul 2012

Adaptation To Climate Change By Agri- Environmental Policy In Finland, Katri Rankinen, Pirjo Peltonen-Sainio, Mikko Laapas, Kalle Sippel

International Congress on Environmental Modelling and Software

An agri-environmental subsidy program that states water protection as one of its main objectives has been in place in Finland since 1995. The programme is the main tool within Water Framework Directive (WFD) to control nutrient load from agricultural areas in Finland. In this work we created story-lines for agricultural production influenced by climate change on a small agricultural catchment in southern Finland. We used dynamic, catchment scale model to simulate the influence of increased precipitation and temperature on runoff and nutrient leaching with and without different water protection methods, including the changes in production and field use. This study …

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Interdependence Of Mitigation, Adaptation And Sustainable Development, D. E. Reusser, Tabea Lissner, Luis Costa, Flavio Augusto Pinto Siabatto, Anselmo Garcia Cantu Ros, Jürgen Kropp Jul 2012

Interdependence Of Mitigation, Adaptation And Sustainable Development, D. E. Reusser, Tabea Lissner, Luis Costa, Flavio Augusto Pinto Siabatto, Anselmo Garcia Cantu Ros, Jürgen Kropp

International Congress on Environmental Modelling and Software

Managing the interdependence of climate mitigation, adaptation and sustainable development requires a good understanding of the dominant sociotechnical and earth system processes that have determined the pathways in the past. Key variables include for example water and food availability which depend on climate and overall ecosystem services, as well as energy supply and social, political and economic conditions. Here we attempt an overview of existing model components and globally available data sources and look for gaps in existing approaches. This overview lies the foundation for building a model at the country level that integrates mitigation and adaptation with the ultimate …

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Impacts Of Climate Change On Water Availability And Crop Yield In Germany, Shaochun Huang, Valentina Krysanova, Fred Hattermann Jul 2012

Impacts Of Climate Change On Water Availability And Crop Yield In Germany, Shaochun Huang, Valentina Krysanova, Fred Hattermann

International Congress on Environmental Modelling and Software

Under a warmer climate, crop growth and crop yield could be affected by many factors (e.g. increasing temperatures, CO2 fertilization and lower water supply) either positively or negatively. The present study aims in a) projecting the future water availability and low flow conditions in the five largest river basins in Germany, b) investigating the impact of climate change and CO2 fertilization on crop yield, and c) studying the potential of having two yields (e.g. winter wheat – summer barley) per year under a warmer climate. The eco-hydrological model SWIM (Soil and Water Integrated Model) was driven by four regional climate …

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Historical And Topographic Drivers Of Tropical Insular Diversity: Comparative Phylogeography Of Eleutherodactylus Antillensis And E. Portoricensis, Two Ecologically Distinctive Frogs Of The Puerto Rican Bank, Brittany Suzanne Barker Jul 2012

Historical And Topographic Drivers Of Tropical Insular Diversity: Comparative Phylogeography Of Eleutherodactylus Antillensis And E. Portoricensis, Two Ecologically Distinctive Frogs Of The Puerto Rican Bank, Brittany Suzanne Barker

Biology ETDs

Topographically complex islands present opportunities for in situ (within-island) allopatric speciation because of increased chances for isolation in separate mountain ranges, as well as greater opportunity for fragmentation by high sea levels and climate-driven changes in habitat distribution. Climatic oscillations of the Quaternary (Pleistocene - Holocene; ~2.5 million years ago to the present) may have influenced the severity of vicariant barriers among and within islands, yet how these events influenced evolution of tropical insular biota is not well understood. This dissertation explores the role of topographic complexity and climate-driven range shifts resulting from sea-level changes and habitat suitability in shaping …

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Shorter Migration Distances Associated With Higher Winter Temperatures Suggest A Mechanism For Advancing Nesting Phenology Of American Kestrels Falco Sparverius, Julie A. Heath, Karen Steenhof, Mark A. Foster Jul 2012

Shorter Migration Distances Associated With Higher Winter Temperatures Suggest A Mechanism For Advancing Nesting Phenology Of American Kestrels Falco Sparverius, Julie A. Heath, Karen Steenhof, Mark A. Foster

Biology Faculty Publications and Presentations

Global climate change has affected avian migration patterns and nesting phenology. Changes in one phase of a bird's cycle will most likely affect other stages, but few studies focus simultaneously on multiple life-history events. We used western North American ringing records and Christmas Bird Counts to examine whether changes in migration patterns were concordant with advancing American kestrel Falco sparverius nesting phenology. Consistent with previous findings, male kestrels migrated shorter distances than female kestrels, and kestrels nesting in southern latitudes migrated shorter distances than kestrels nesting in more northern areas. In addition, kestrel migration distance decreased significantly from 1960 to …

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Sensitivity Of Circumpolar Deep Water Transport And Ice Shelf Basal Melt Along The West Antarctic Peninsula To Changes In The Winds, Michael S. Dinniman, John M. Klinck, Eileen E. Hofmann Jul 2012

Sensitivity Of Circumpolar Deep Water Transport And Ice Shelf Basal Melt Along The West Antarctic Peninsula To Changes In The Winds, Michael S. Dinniman, John M. Klinck, Eileen E. Hofmann

CCPO Publications

Circumpolar Deep Water (CDW) can be found near the continental shelf break around most of Antarctica. Advection of this relatively warm water (up to 2 degrees C) across the continental shelf to the base of floating ice shelves is thought to be a critical source of heat for basal melting in some locations. A high-resolution (4 km) regional ocean-sea ice-ice shelf model of the west Antarctic Peninsula (WAP) coastal ocean was used to examine the effects of changes in the winds on across-shelf CDW transport and ice shelf basal melt. Increases and decreases in the strength of the wind fields …

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Epiphytes: A Study Of The History Of Forest Canopy Research, Sven Batke Jul 2012

Epiphytes: A Study Of The History Of Forest Canopy Research, Sven Batke

The Plymouth Student Scientist

The development of new and more versatile access techniques is a major contributor to the continuously growing field of canopy research. Methods such as cranes, canopy walkways, hot-air balloons, ladders and rope access techniques enabled scientist for the first time to conduct proximate studies of canopy organisms. One of the most studied groups of canopy dwellers are epiphytes. With their versatile adaptations to a life above ground level and their vast abundance, epiphytes contribute profoundly to the forest diversity and ecosystem processes. Most epiphytes have species-specific habitat preference within individual phorophytes. However these preferences are limited by biotic and abiotic …

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Post-Fire Soil Water Repellency: Extent, Severity And Thickness Relative To Ecological Site Characteristics Within Piñon-Juniper Woodlands, Daniel Lewis Zvirzdin Jun 2012

Post-Fire Soil Water Repellency: Extent, Severity And Thickness Relative To Ecological Site Characteristics Within Piñon-Juniper Woodlands, Daniel Lewis Zvirzdin

Theses and Dissertations

Erosion and weed dominance often limit the recovery of burned piñon-juniper woodlands. Soil water repellency (SWR) is one factor that may contribute to this by increasing overland flow and impeding seedling establishment. In spite of these effects, the extent of SWR within piñon-juniper woodlands is unknown. In this study, the extent, severity and thickness of SWR were sampled across 41 1,000 m2 plots within three 2009 Utah wildfires. Predictive models of SWR were built from ecological site characteristic data collected at each site. Across the study, SWR was found at 37% of the points sampled. SWR extent was strongly related …

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Cows V. Capitalists: Visions Of A Post-Carbon Economy, Alison Peck May 2012

Cows V. Capitalists: Visions Of A Post-Carbon Economy, Alison Peck

Journal of Food Law & Policy

I was tempted to entitle this book review something like, "Why the Farm Bill Is the Key to Our Energy Future (Hint: It's Not About Ethanol, Methane Emissions, or Carbon Sinks)." But in addition to being too long to fit across the header of a law review page, such a title would have been slightly misleading. Actually, in Simon Fairlie's view, our future is about ethanol, methane emissions, and carbon sinks - but not in the way our current agricultural policies understand and deal with these subjects.

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The Effect Of Climate Change On The Distributions Of Invasive Plants And Their Associated Biological Control Agents In North America, Caroline A. Curtis May 2012

The Effect Of Climate Change On The Distributions Of Invasive Plants And Their Associated Biological Control Agents In North America, Caroline A. Curtis

Master's Theses or Doctor of Nursing Practice

Climate change has the potential to alter the size, shape, and location of species’ distributions. As a result, the interactions between species are also likely to be impacted as novel species encounter each other and historical community assemblages are broken apart. To quantify the impact of distributional changes as a result of climate change on interacting species, distribution maps were produced for three species of invasive plant and their associated biological control agent at three time periods: current, 2050, and 2080. For each of the future time periods, two distribution maps were created for each species, representing the minimum and …

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Carbon Sequestration On Utah Rangelands: A Landowner Perspective, Seth Cook May 2012

Carbon Sequestration On Utah Rangelands: A Landowner Perspective, Seth Cook

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Carbon sequestration is the removal of carbon dioxide from the air and storing it in plants and soil through natural processes. Rangelands can be managed to sequester carbon and mitigate climate change. Supported by the Utah Agricultural Experiment Station, this study assessed Utah rangeland owners’ perceptions of carbon sequestration and explored factors influencing their likelihood of participation in relevant programs. Data were collected through interviews and a statewide survey of Utah rangeland owners. Over two-thirds of respondents were aware of carbon sequestration and viewed it positively. Those who thought the climate had been changing over the past 30 years tended …

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Predicting How Adaptation To Climate Change Could Affect Ecological Conservation: Secondary Impacts Of Shifting Agricultural Suitability, Bethany A. Bradley, Lyndon D. Estes, David G. Hole, Stephen Holness, Michael Oppenheimer, Will R. Turner, Hein Beukes, Roland E. Schulze, Mark A. Tadross, David S. Wilcove May 2012

Predicting How Adaptation To Climate Change Could Affect Ecological Conservation: Secondary Impacts Of Shifting Agricultural Suitability, Bethany A. Bradley, Lyndon D. Estes, David G. Hole, Stephen Holness, Michael Oppenheimer, Will R. Turner, Hein Beukes, Roland E. Schulze, Mark A. Tadross, David S. Wilcove

Geography

Aim: Ecosystems face numerous well-documented threats from climate change. The well-being of people also is threatened by climate change, most prominently by reduced food security. Human adaptation to food scarcity, including shifting agricultural zones, will create new threats for natural ecosystems. We investigated how shifts in crop suitability because of climate change may overlap currently protected areas (PAs) and priority sites for PA expansion in South Africa. Predicting the locations of suitable climate conditions for crop growth will assist conservationists and decision-makers in planning for climate change. Location: South Africa. Methods: We modelled climatic suitability in 2055 for maize and …

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American Pika (Ochotona Princeps): Persistence And Activity Patterns In A Changing Climate, Cody P. Massing May 2012

American Pika (Ochotona Princeps): Persistence And Activity Patterns In A Changing Climate, Cody P. Massing

Master's Theses

An increasing amount of evidence suggests that as temperatures increase, montane animals are moving upward in elevation (IPCC 2007, Parmesan and Yohe 2003). As suitable habitats rise in elevation and then disappear altogether, these animals could be pushed to extinction. The American pika, Ochotona princeps, is a montane mammal that lives in western North America, usually at elevations above 1500 m (Smith and Weston 1990). Recent evidence suggests that pika population numbers are dropping in response to rising temperatures (Beever et al. 2010). The pika is a small herbivorous lagomorph, a relative of hares and rabbits. Its habitat is …

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Climate-Induced Community Relocations: Creating An Adaptive Governance Framework Based In Human Rights, Robin Bronen Apr 2012

Climate-Induced Community Relocations: Creating An Adaptive Governance Framework Based In Human Rights, Robin Bronen

Biological Sciences

The specter of millions of people fleeing their homes because of climate change has sparked an international debate about creating human rights protections for climate refugees. Though scholars and journalists have focused on the southern hemisphere, this crisis is occurring with unprecedented rapidity in the Arctic. In Alaska, temperatures have increased at twice the rate of the global average. Arctic sea ice is decreasing and permafrost is thawing, which is accelerating flooding and erosion. These environmental phenomena are threatening dozens of the 200 indigenous tribes that have inhabited the Alaskan Arctic for millennia. The traditional responses of hazard prevention and …

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Salmonid Phenology, Microevolution, And Genetic Diversity In A Warming Alaskan Stream, Ryan P. Kovach Apr 2012

Salmonid Phenology, Microevolution, And Genetic Diversity In A Warming Alaskan Stream, Ryan P. Kovach

Biological Sciences

Climate change is a formidable challenge for fish and wildlife conservation because it will directly influence the ecology and evolution of wild populations. Though climate-induced temporal trends in phenological events are common in many populations, there remains considerable uncertainty in the patterns, mechanisms, and consequences of phenological shifts. To address this, and clarify how climate change has impacted salmonid migration timing and microevolution in a warming (0.34�C per decade) Alaskan stream, long-term demographic and genetic data were used to answer these questions: how has migration timing changed in multiple salmonid species; what sources of variation influence migration timing; are changes …

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Assessing River Ice Breakup Date, Coastal Tundra Vegetation And Climate Divisions In The Context Of Alaska Climate Variability, Peter A. Bieniek Apr 2012

Assessing River Ice Breakup Date, Coastal Tundra Vegetation And Climate Divisions In The Context Of Alaska Climate Variability, Peter A. Bieniek

Atmospheric Sciences

In Alaska, there exists a substantial knowledge gap of key climate drivers and filling these gaps is vital since life and the economy are inexorably linked with climate in the state. This thesis identifies and investigates three topics that advance the understanding of Alaska climate variability: the role of large-scale climate in Interior river ice breakup, the link between climate and arctic tundra vegetation, and climate divisions based on objective methods. River ice breakup in the Yukon-Kuskoswim watershed is occurring earlier by 1.3 days decade-1 1948-2008 and displays large year-to-year variability. April-May Interior Alaska air temperatures are the best predictor …

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Losing Ground: An Ethnography Of Vulnerability And Climate Change In Shishmaref, Alaska, Elizabeth K. Marino Apr 2012

Losing Ground: An Ethnography Of Vulnerability And Climate Change In Shishmaref, Alaska, Elizabeth K. Marino

Anthropology

This dissertation presents an ethnography of vulnerability in Shishmaref, Alaska. The village of Shishmaref, population 563, faces imminent threat from increasing erosion and flooding events -- linked to climatic changes and ecological shift -- making the relocation of residents off of the island necessary in the foreseeable future. In spite of ongoing conversations with government agencies since 1974, an organized relocation has yet to occur in Shishmaref. While ecological shift and anthropogenic climate change are no doubt occurring in and around the island, the literature on vulnerability and disaster predicts that social systems contribute at least as much as ecological …

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Growth Of Western Alaska And Asian Chum Salmon (Oncorhynchus Keta) In Relationship To Climatic Factors And Inter- And Intraspecific Competition, Beverly Ann Agler Apr 2012

Growth Of Western Alaska And Asian Chum Salmon (Oncorhynchus Keta) In Relationship To Climatic Factors And Inter- And Intraspecific Competition, Beverly Ann Agler

Fisheries

Ocean climate shifts and interspecific interactions with Russian pink salmon and Asian chum salmon are all believed to influence the growth of chum salmon in the North Pacific Ocean. Stepwise generalized least squares regression and Mantel's tests were used to examine factors influencing mean annual growth from adult scales collected during 1962-2008. First-year scale growth was affected by warmer regional temperatures, the North Pacific Index (NH), and reduced ice cover. Significant negative effects of Asian chum salmon abundance were found on third-year growth of five of six age 0.3 populations and three of four age 0.4 populations examined, indicating intraspecific …

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Nantucket Shellfish Management Plan, Kristin Uiterwyk, Steve Bliven, Dan Leavitt, Jack Wiggin, Urban Harbors Institute, University Of Massachusetts Boston Apr 2012

Nantucket Shellfish Management Plan, Kristin Uiterwyk, Steve Bliven, Dan Leavitt, Jack Wiggin, Urban Harbors Institute, University Of Massachusetts Boston

Office of Community Partnerships Posters

Nantucket’s shellfish resources are an important part of the Island’s history, culture, and economy. Nantucket waters support one of the country’s last wild-caught bay scallop fisheries. Elsewhere along the Atlantic coast, fishing pressure, habitat loss, and disease have severely depleted bay scallop populations. Although Nantucketers continue to make a living harvesting shellfish from the Island’s waters, many do so with concern for the future of the resources and the habitats that support them. Urban Harbors Institute (UHI) provided technical assistance to the community to develop a Shellfish Management Plan (SMP) that addresses issues of water quality, habitat loss, climate change, …

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