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Articles 2401 - 2430 of 3965
Full-Text Articles in Ecology and Evolutionary Biology
Quantifying Differences In Habitat Use Between Anglers And Large Bluegills, Eric J. Weimer, Michael L. Brown, Brian G. Blackwell
Quantifying Differences In Habitat Use Between Anglers And Large Bluegills, Eric J. Weimer, Michael L. Brown, Brian G. Blackwell
The Prairie Naturalist
We compared the habitat use of large (>200 mm) bluegills (Lepomis macrochirus) to the locations of anglers targeting bluegills in a South Dakota glacial lake to determine whether habitat use was similar between anglers and bluegills. Eighty- five bluegills (mean total length = 213 mm) collected in September 2002 and May 2003 were affixed with external radio transmitters and subsequently relocated three to four times per week from October 2002 through October 2003. Bluegill angler locations were recorded during bluegill tracking sessions and roving creel surveys. Habitat variables (water depth, vegetation density and height, and substrate type) were measured …
Mammals Of North Dakota. First Edition. Robert Seabloom., Erin H. Gillam
Mammals Of North Dakota. First Edition. Robert Seabloom., Erin H. Gillam
The Prairie Naturalist
As a mammalogist living in the Great Plains, I was excited to hear about the publication of The Mammals of North Dakota by Robert Seabloom. No such field guide has been compiled since the late 1920s, leaving nature lovers and researchers alike without a modern source of information about the mammals of the state. Despite my enthusiasm, I will admit that I was originally expecting a standard (i.e., boring) field guide with dry facts about the taxonomic groups of interest. Much to my surprise, this book was not a mere list of relevant information, but an engaging work providing extensive …
Diurnal Raptors Of Buffalo County, Nebraska, Thomas L. Freeman
Diurnal Raptors Of Buffalo County, Nebraska, Thomas L. Freeman
The Prairie Naturalist
Diurnal birds of prey are apex predators, which often are utilized as indicators of potential environmental change (Newton 1979, Rodriguez-Estrella et al. 1998). While the Platte River Valley of Nebraska and the central plains are recognized as important winter habitat for numer- ous bird of prey species (United States Fish and Wildlife Service [USFWS] 1981, Root 1988), there are few published studies describing the distribution and abundance of raptors in Nebraska (Mathisen and Mathisen 1968, Craighead and Craighead 1969, USFWS 1981). In addition, studies summarizing the long-term distribution or density of Falconi- formes in Nebraska are limited due to the …
Book Review: The Iowa Lakeside Laboratory: A Century Of Discovering The Nature Of Nature. Michael J. Lannoo., Bonnie S. Bowen
Book Review: The Iowa Lakeside Laboratory: A Century Of Discovering The Nature Of Nature. Michael J. Lannoo., Bonnie S. Bowen
The Prairie Naturalist
Iowa Lakeside Laboratory (a.k.a. Lakeside Lab) is one of several biological field stations that were established in the early 1900s and that have active educational and research programs today. Michael Lannoo’s account of the history of Lakeside Lab was initiated at the centennial celebration of the lab in 2009. Lannoo’s own connection with Iowa Lakeside Laboratory began as a student at Iowa State University and continues today as a member of the Lakeside Lab summer faculty and as Associate Director of Academics and Research. In his book, Lannoo describes field stations, and Lakeside Lab in particular, as educational institutions that …
Book Reviews: Video Surveillance Of Nesting Birds. Edited By Christine A. Ribic, Frank R. Thompson Iii, And Pamela J. Pietz., Marissa A. Ahlering
Book Reviews: Video Surveillance Of Nesting Birds. Edited By Christine A. Ribic, Frank R. Thompson Iii, And Pamela J. Pietz., Marissa A. Ahlering
The Prairie Naturalist
Observations and studies of nests have been a central component of ornithology since its inception. Until recently, studies of nesting ecology were limited to human observation, making some types of information nearly impossible to obtain, such as nocturnal behavior, or difficult to study with adequate sample sizes, such as provisioning behaviors or cause of nest failure. The use of video photography to study the nesting biology of birds has exploded in the past decade, and the most recent volume of Studies in Avian Biology, Video Surveillance of Nesting Birds, has done a nice job of summarizing the history of camera …
Mate Replacement And Alloparental Care In Ferruginous Hawk (Buteo Regalis), Shubham Datta, Will M. Inselman, Jonathan A. Jenks, Kent C. Jensen, Christopher C. Swanson, Robert W. Klaver, Indrani Sasmal, Troy W. Grovenburg
Mate Replacement And Alloparental Care In Ferruginous Hawk (Buteo Regalis), Shubham Datta, Will M. Inselman, Jonathan A. Jenks, Kent C. Jensen, Christopher C. Swanson, Robert W. Klaver, Indrani Sasmal, Troy W. Grovenburg
The Prairie Naturalist
Alloparental care (i.e., care for unrelated offspring) has been documented in various avian species (Maxson 1978, Smith et al. 1996, Tella et al. 1997, Lislevand et al. 2001, Literak and Mraz 2011). A male replacement mate that encounters existing broods has options, which include alloparental care or infanticide. Infanticide may be beneficial in some species (Rohwer 1986, Kermott et al. 1990), but in long-lived avian species, like the ferruginous hawk (Buteo regalis) that do not renest within a season, infanticide might be detrimental. Adoption and rearing success likely provide direct evidence of competence of replacement mates as potential parents for …
Multi-Scale Habitat Use Of Male Ruffed Grouse In The Black Hills National Forest, Cassandra L. Mehls, Kent C. Jensen, Mark A. Rumble, Michael C. Wimberly
Multi-Scale Habitat Use Of Male Ruffed Grouse In The Black Hills National Forest, Cassandra L. Mehls, Kent C. Jensen, Mark A. Rumble, Michael C. Wimberly
The Prairie Naturalist
Ruffed grouse (Bonasa umbellus) are native upland game birds and a management indicator species (MIS) for aspen (Populus tremuloides) in the Black Hills National Forest (Black Hills). Our objective was to assess resource selection of male ruffed grouse to identify the most appropriate scale to manage for aspen and ruffed grouse in the Black Hills. During spring 2007 and 2008, we conducted drumming surveys throughout the central and northern Black Hills to locate used and unused sites from which we compared habitat characteristics at increasing spatial scales. Aspen with >70% overstory canopy cover (OCC) was important to the occurrence of …
Making Nature Whole: A History Of Ecological Restoration. William R. Jordan Iii And George M. Lubick., Daryl D. Smith
Making Nature Whole: A History Of Ecological Restoration. William R. Jordan Iii And George M. Lubick., Daryl D. Smith
The Prairie Naturalist
Ecological restoration—the process of assisting the recovery of ecosystems that have been degraded, damaged, or destroyed—is being incorporated into the fabric of our society. The practice of ecological restoration of natural areas developed and grew in the twentieth century in response to widespread human disturbance of natural communities. Undoubtedly, this type of restoration will continue to increase in importance in the coming decades given the extensive alteration of ecosystems that is occurring and that is showing no signs of abating.
As indicated in the promotional material for Making Nature Whole, Jordan and Lubick have provided a seminal publication for the …
Notes: Bed-Site Selection By Neonatal White-Tailed Deer In Central North Dakota, Brian A. Schaffer, Jonathan A. Jenks, Troy W. Grovenburg, William F. Jensen
Notes: Bed-Site Selection By Neonatal White-Tailed Deer In Central North Dakota, Brian A. Schaffer, Jonathan A. Jenks, Troy W. Grovenburg, William F. Jensen
The Prairie Naturalist
Understanding bed-site selection and vegetation characteristics provides valuable information for population management (Verme 1977, Huegel et al. 1985a, Nelson and Woolf 1987). Predation and other natural-caused mortalities of white-tailed deer (Odocoileus virginianus) neonates are most likely to occur within the first 60 days of life; a time period when selected habitat characteristics are vital to survival (Verme 1977, Hue- gel et al. 1985a, Nelson and Woolf 1987, Grovenburg et al. 2010). Prior to the study of Grovenburg et al. (2010), limited research had been completed on the bed-site selection of neonatal white-tailed deer in the grasslands of the Northern Great …
Harvest Incentives: A Tool For Managing Aquatic Invasive Species, Bob Wiltshire, Nathan Stone, Marshall Meyers, Bill Hyatt, Lori Williams, Jason Goldberg, Susan Pasko, Leah Elwell
Harvest Incentives: A Tool For Managing Aquatic Invasive Species, Bob Wiltshire, Nathan Stone, Marshall Meyers, Bill Hyatt, Lori Williams, Jason Goldberg, Susan Pasko, Leah Elwell
National Invasive Species Council
Conclusion
The success of any harvest incentive program to address aquatic invasive species will depend upon numerous biological, socioeconomic, and legal considerations. Programs that encourage harvest may be a successful management tool in targeting small, distinct populations; in high priority areas within a larger invasion; or they may play a supplementary role within larger control programs. Their use, however, will require careful review, planning, and monitoring to ensure success and that they do not unintentionally lead to further spread of invasive species, cause additional harm to native species, or waste valuable resources.
Water Water Everywhere: Analyzing Long Island's Water Issues And Finding Solutions For A Sustainable Future, Anthony T. Becker
Water Water Everywhere: Analyzing Long Island's Water Issues And Finding Solutions For A Sustainable Future, Anthony T. Becker
2014 Student Theses
Over three million people call Long Island their home. With access to beautiful landscapes, world-renowned beaches, and proximity to New York City, it is no wonder that so many proudly call this geographic stretch of glacial till their home. However, throughout the years our actions do not necessarily reflect this affection we have to our home. Years of sprawl and human infestation across the island have resulted in widespread environmental degradation. Specifically, the water we drink and the beaches we enjoy have become endangered. I plan on studying the urban ecology of how intensified population growth led to the eutrophication …
Morphometric Studies On Subadult Liza Subviridis And Sillago Sihama From Sonmiani Bay (Miani Hor), Balochistan, Pakistan, Muhammad A. Gondal, Naureen A. Qureshi, Noor U. Saher
Morphometric Studies On Subadult Liza Subviridis And Sillago Sihama From Sonmiani Bay (Miani Hor), Balochistan, Pakistan, Muhammad A. Gondal, Naureen A. Qureshi, Noor U. Saher
Journal of Bioresource Management
Length-weight relationship of Liza subviridis and Sillago sihama (Family: Mugilidae; Class: Pisces and Family: Sillaginidae; Class: Pisces) in subadults sampled from Somiani Bay Balochistan, Pakistan during 2002, 2003 and 2006 was analyzed. Liza subviridis showed positive allometry (3.23) in 2002, and negative allometry during 2003 (2.95) and 2006 (1.95). Sub adults of Sillago sihama showed positive allometry during 2002 (3.10) and 2003 (3.13). An isometric condition (3.02) was observed in the samples of Sillago sihama collected from Bhaira in 2006.
On Individual, Sex And Age Differentiation Of Indian House Crow (Corvus Splendens) Call: A Preliminary Study In Potohar, Pakistan, Waqas Hameed, Inayat Ullah, Safia Janjua, Fakhar -I- Abbas, Afsar Mian
On Individual, Sex And Age Differentiation Of Indian House Crow (Corvus Splendens) Call: A Preliminary Study In Potohar, Pakistan, Waqas Hameed, Inayat Ullah, Safia Janjua, Fakhar -I- Abbas, Afsar Mian
Journal of Bioresource Management
Considering importance of acoustics studies in population biology, 500 calls of the Indian House Crow (Corvus splendens) were recorded in morning - mid-afternoon hours (January-February, 2009) from 23 sites of urban areas of Potahar (Punjab, Pakistan). Calls were recorded using Sony CFS 1030 S sound records (sampling rate = 48 KHz) and edited using Sound Analysis Pro (Version 1.02). software using FFT method rate 50%, data window 9.27 ms, advanced window 1.36 ms. Through editing of calls, we selected 60 (37 ♂♂, 17 ♀♀, 6 Juvenile ♂♂) good quality spectrograms for detailed analysis. Spectrograms were characterized by rapid frequency modulations …
Review: Pollination, Pollinated And Pollinators Interaction In Pakistan, Mohammad Irshad, Elizabeth Stephen
Review: Pollination, Pollinated And Pollinators Interaction In Pakistan, Mohammad Irshad, Elizabeth Stephen
Journal of Bioresource Management
The agriculture sector is important in the overall economy and export earnings of Pakistan. Pollination is an essential ecosystem service that depends on symbiosis between species, the pollinated and the pollinator. Animal mediated pollination contributes to the sexual production of over 90% species of modern angiosperms. Effective pollination results in increased crop production, quality improvement and more seed production. Many fruits, vegetables, edible oil crops, stimulant crops and nuts are highly dependent on bee pollination. Worldwide value of pollinators is €153 billion (217 billion US dollars). The production value of pollinated dependent crop in Pakistan is quantified to be 1.59 …
Research Note: Contribution To Mushroom Flora Of Rawalpindi-Islamabad, Pakistan, Kishwar Sultana, Naveeda Riaz, Gulshan Irshad, Ali Nauman Khan
Research Note: Contribution To Mushroom Flora Of Rawalpindi-Islamabad, Pakistan, Kishwar Sultana, Naveeda Riaz, Gulshan Irshad, Ali Nauman Khan
Journal of Bioresource Management
Seven hymenomycetous fungi (mushrooms) were collected from the twin cities area during July 2008. These were identified as the members of the order Agaricales, class Basidiomycetes. They belong to five genera: *Clitocybe fragrans, *Collybia cookie, *Coprinus radians, *Coprinus sterculinus, *Volvariella bingensis, Volvariella parvula, and Termitomyces microcarpus. Five of them, marked with asterisk were reported for the first time from Pakistan.
Diagnostic Accuracy Of C-Reactive Protein In Neonatal Sepsis, Sidra Younis, Muhammad Ali Sheikh, Amjad Ali Raza
Diagnostic Accuracy Of C-Reactive Protein In Neonatal Sepsis, Sidra Younis, Muhammad Ali Sheikh, Amjad Ali Raza
Journal of Bioresource Management
Sepsis is the most common cause of neonatal mortality and is responsible for 30-50% of total neonatal deaths each year in developing countries. The objective of the study was to determine the diagnostic accuracy of C-reactive protein (CRP) in neonatal sepsis. Fifty nine consecutive patients with risk factors and clinical features suggestive of CRP sepsis were selected as per operational definition and fulfilling the inclusion and exclusion criteria. Detailed physical examination was carried out. Blood sample for culture and CRP was taken from all the patients. Results of blood culture and CRP were noted down in the performa. Statistical analysis …
The State Of The Upper Bay Of Panama Wetlands: Ecological Significance, Environmental Policy, Urbanization, And Social Justice, Madeline A. Price
The State Of The Upper Bay Of Panama Wetlands: Ecological Significance, Environmental Policy, Urbanization, And Social Justice, Madeline A. Price
Celebration
I conducted this research while studying abroad with SIT Panama: Tropical Ecology, Marine Ecosystems, and Biodiversity Conservation. This is a multidisciplinary investigation of the Upper Bay of Panama wetlands, a 49,000 hectare region east of Panama City that features mangrove, intertidal mudflat, and grassland habitat internationally recognized as a stopover site for two million shorebirds every migration season. However, with economic pressure to increase urban development in the area, this land’s protected status under the Ramsar convention was suspended for a year in April 2012. By compiling scientific studies, news articles, photographs, and interviews with local conservationists and community members, …
Macroinvertebrate Assemblages And Dynamic Soil Properties: Influence Of Dredging, Bianca N. Ross
Macroinvertebrate Assemblages And Dynamic Soil Properties: Influence Of Dredging, Bianca N. Ross
Senior Honors Projects
Bianca Peixoto
Senior Honors Project
Macroinvertebrate Assemblages and Dynamic Soil Properties: Influence of Dredging: Abstract
The habitat characterization of subaqueous soils is important for inventorying natural resources and monitoring changes in ecosystem processes. This project aimed to characterize benthic communities within coastal ponds of southern Rhode Island, and develop an understanding of how these communities change due to habitat alterations. I explored the distribution of benthic biology among a range of estuarine subaqueous soils and the effect of anthropogenic disturbance (dredging) on these distributions. The term “benthic” refers to the collection of organisms living in the substrate at the interface …
Phenological Relationships Of Nesting Barn Swallows In A Swallow-Fly-Cattle System And Their Potential Role In Suppression Of Pest Flies In A Warming Climate, Claire Stuyck
All Theses
Conservation efforts for birds that provide ecosystem services in agricultural systems require management approaches that cross disciplines. This information is communicated through a variety of outlets but rarely in ways that interface effectively with normal management approaches. The disconnect between agriculture and wildlife conservation reduces the likelihood that ecosystem service benefits will be realized. One understudied ecosystem service provided by birds such as barn swallows (Hirundo rustica) is their role in suppression of flies that are pests to livestock. Climate change, however, may differentially affect flies that respond largely to temperature, and swallows that migrate and respond to photoperiod and …
Assessing The Response Of Small Mammal Functional Guilds To A Simulated Pathogen Attack In A Deciduous Forest Ecosystem, Katie Keck
All Theses
Oak trees (Quercus species) are a foundation species that influence the population dynamics of other organisms by stabilizing ecosystem processes. Globally, oak-dominated forests have experienced widespread mortality due to the fungal pathogen, Phytophthora ramorum, which causes the disease Sudden Oak Death (SOD). I investigated the impact of a simulated pathogen attack such as SOD on the small mammal assemblage of an oak forest in Cornwall, New York. Specifically, I tested the hypothesis that specialist species are most impacted by the loss of foundation species and that they would decline in abundance because of changes in food and habitat resources. In …
Persistence Of A Vulnerable Semi-Aquatic Turtle In An Intensively-Managed Forest Landscape, Christopher O'Bryan
Persistence Of A Vulnerable Semi-Aquatic Turtle In An Intensively-Managed Forest Landscape, Christopher O'Bryan
All Theses
Understanding spatial and population ecology of organisms allows land managers to predict how changes in distribution and composition of landscape features influence persistence. Our goal was to investigate body size, sex ratios, survival, individual movements, and habitat selection of a vulnerable freshwater turtle species, the spotted turtle (Clemmys guttata), in an intensively-managed forest landscape in eastern North Carolina, USA. Spotted turtles naturally occur in wetland-dominated landscapes, but this system is heavily-altered, with >222,000 hectares of pine plantations and >10,000 km of ditches managed by Weyerhaeuser Company. During 2012-2013, we captured and individually marked 280 turtles, and used radio-telemetry (n = …
Prymnesium Parvum And Fish Kills In A Southern Nevada Man-~Made Reservoir, Tara Gregg
Prymnesium Parvum And Fish Kills In A Southern Nevada Man-~Made Reservoir, Tara Gregg
UNLV Theses, Dissertations, Professional Papers, and Capstones
The water chemistry of Lake Las Vegas (LLV), a Southern Nevada man-made reservoir, is influenced by both anthropogenic and natural sources. These sources affect the reservoir's water chemistry, which may promote harmful algal blooms (HABs) leading to massive fish kill events. Fish kills, caused by the golden algaePrymnesium parvum (P. parvum), continue to pose a threat in the reservoir. However, no effective treatments to controlP. parvumin large reservoirs such as LLV have been determined. This cross-sectional study evaluated important variables that may affectP. parvumHABs in LLV, including non-P. parvumbiomass (mg/m3), total zooplankton abundance (#/m3), temperature, TDS (salinity), mineral concentration (Ca, …
Pronghorn (Antilocapra Americana) Offspring Recruitment On The Carrizo Plain National Monument: Evaluating The Effects Of Low Population Density And Marginal Habitat Quality., Diego Ramirez Johnson
Pronghorn (Antilocapra Americana) Offspring Recruitment On The Carrizo Plain National Monument: Evaluating The Effects Of Low Population Density And Marginal Habitat Quality., Diego Ramirez Johnson
UNLV Theses, Dissertations, Professional Papers, and Capstones
Demographic fluctuation among ungulate populations is strongly linked to variability in recruitment. Rates of recruitment are subject to various forms of density-dependent and density-independent regulation. For species which benefit from the presence of conspecifics, reduced population density can decrease rates of recruitment and trigger a decline in per capita growth. Termed the Allee effect, this scenario can cause demographic collapse and population extinction. For many ungulate species, predation on juveniles is reduced when the timing and distribution of births is synchronized within a local population. Because birth synchrony is density-dependent, it may act as a mechanism for the Allee effect …
Effects Of Petroleum Distillates On Amphibian Development, Kate Walker
Effects Of Petroleum Distillates On Amphibian Development, Kate Walker
Graduate Theses and Dissertations
Petroleum distillates are widely used as an energy source and the extraction and disposal of these chemicals are done with little consideration of their effects on aquatic environments. Amphibians are considered excellent ecological indicators but little research has examined effects of petroleum distillates on aquatic species. I evaluated the lethal and sublethal effects on larval amphibians with exposure to petroleum distillates associated with various venues of pollution including hydraulic fracturing. I selected three petroleum distillates (kerosene, oil, and unleaded gasoline) that are known to have negative effects on aquatic organisms and are similar to the common constituents of mixtures used …
Body Size And Species Richness Changes In Glyptosaurinae (Squamata: Anguidae) Through Climatic Transitions Of The North American Cenozoic, Sara Elshafie
Department of Earth and Atmospheric Sciences: Dissertations, Theses, and Student Research
Poikilothermic vertebrates offer excellent climate proxies based on relationships between environment and measurable variables such as body size and species richness. Relationships of these variables in lizards to environmental transitions over long time scales are poorly understood. Here I show that patterns of body size and species richness in a lizard clade, Glyptosaurinae (Squamata: Anguidae), correspond to known histories of paleotemperatures through the Cenozoic of North America. Glyptosaurines have the richest fossil record among North American Cenozoic lizards and exhibit a wide range of skull sizes. In order to estimate body size for glyptosaurines and other fossil anguids, I collected …
Mapping The Spatial Movements, Behaviors, And Interactions Of Captive Orangutans Using Terrestrial Laser Scanning And Gis, Zachary Joseph Smith
Mapping The Spatial Movements, Behaviors, And Interactions Of Captive Orangutans Using Terrestrial Laser Scanning And Gis, Zachary Joseph Smith
USF Tampa Graduate Theses and Dissertations
Five captive Bornean orangutans (Pongo pygmaeus) were observed in order to better understand their spatial selection, behavior, and interaction with their environment and each other. A newly introduced adult male's interactions with a female group containing two adults, one adolescent, and one juvenile, was documented. Visual observations were performed to document individual behaviors, along with any interactions with silvery langur monkeys, public crowd levels, temperature, and enrichment props. Methods included 15 observation periods, 0.5-3 hours in length each, during which behaviors were verbally and visually confirmed using a HD video camera. Spatial locations of each individual were recorded every three …
Developing Transmissible Vaccines For Animal Infections: Intrinsically Safe Designs And A Staged Transparent Development Process Will Be Essential, Daniel G. Streiker, Megan E. Griffiths, Rustom Antia, Laura Bergner, Peter Bowman, Maria Vitoria Dos Santos De Moraes, Kevin Esvelt, Mike Famulare, Amy T. Gilbert, Biao He, Michael A. Jarvis, David A. Kennedy, Jennifer Kuzma, Carolyne Nasi,Iyu Wanyonyi, Christopher Remien, Tonie Rocke, Kyle Rosenke, Courtney Schreiner, Justin Sheen, David Simons, Ivet A. Yordanova, James J. Bull, Scott L. Nuismer
Developing Transmissible Vaccines For Animal Infections: Intrinsically Safe Designs And A Staged Transparent Development Process Will Be Essential, Daniel G. Streiker, Megan E. Griffiths, Rustom Antia, Laura Bergner, Peter Bowman, Maria Vitoria Dos Santos De Moraes, Kevin Esvelt, Mike Famulare, Amy T. Gilbert, Biao He, Michael A. Jarvis, David A. Kennedy, Jennifer Kuzma, Carolyne Nasi,Iyu Wanyonyi, Christopher Remien, Tonie Rocke, Kyle Rosenke, Courtney Schreiner, Justin Sheen, David Simons, Ivet A. Yordanova, James J. Bull, Scott L. Nuismer
United States Department of Agriculture Wildlife Services: Staff Publications
Developing Transmissible Vaccines for Animal Infections: Intrinsically Safe Designs and a Staged Transparent Development Process Will Be Essential
Intrinsically safe, biologically compelling vaccine designs
Pahsed development must incorporate checkpoints and engagement
Staged development with established checkpoints
Wquitable partnerships with international governance
Toward deployment
Workshop organization
Seven proposed commitm ents for the responsible development of transmissible vaccines for infectious disease control in animals
Evolutionary outcomes of vaccine transmission depend on the viral vector and the genetic modifications introduced
Issue Brief: Asset Management For Stormwater, New England Environmental Finance Center, Sustainable Communities Learning Network
Issue Brief: Asset Management For Stormwater, New England Environmental Finance Center, Sustainable Communities Learning Network
Sustainable Communities Capacity Building
Asset management is a strategic approach to maintaining and sustaining infrastructure in order to meet the needs of the community at the lowest overall life cycle cost. This approach helps communities know how and where to prioritize limited funds in order to achieve the greatest benefit. Often applied to drinking water and wastewater infrastructure, this method is well suited to managing any assets, including stormwater systems.
This issue brief is intended to introduce local governments to the asset management process and to show how it can be applied in managing stormwater assets. It was adapted from an appendix written by …
Exposure Of U.S. National Parks To Land Use And Climate Change 1900-2100, Andrew J. Hansen, Cory Davis, Jessica Haas, David M. Theobald, John E. Gross, William B. Monahan, Tom Olliff, Steven W. Running
Exposure Of U.S. National Parks To Land Use And Climate Change 1900-2100, Andrew J. Hansen, Cory Davis, Jessica Haas, David M. Theobald, John E. Gross, William B. Monahan, Tom Olliff, Steven W. Running
Ecosystem and Conservation Sciences Faculty Publications
Many protected areas may not be adequately safeguarding biodiversity from human activities on surrounding lands and global change. The magnitude of such change agents and the sensitivity of ecosystems to these agents vary among protected areas. Thus, there is a need to assess vulnerability across networks of protected areas to determine those most at risk and to lay the basis for developing effective adaptation strategies. We conducted an assessment of exposure of U.S. National Parks to climate and land use change and consequences for vegetation communities. We first defined park protected-area centered ecosystems (PACEs) based on ecological principles. We then …
Current Status And Long-Term Trends In Water Quality And Living Resources In The Virginia Tributaries And Chesapeake Bay Mainstem From 1985 Through 2012, Daniel M. Dauer, Todd A. Egerton, John R. Donat, Michael F. Lane, Suzanne C. Doughten, Cindy Johnson
Current Status And Long-Term Trends In Water Quality And Living Resources In The Virginia Tributaries And Chesapeake Bay Mainstem From 1985 Through 2012, Daniel M. Dauer, Todd A. Egerton, John R. Donat, Michael F. Lane, Suzanne C. Doughten, Cindy Johnson
Status and Trends for Virginia Chesapeake Bay
The period prior to the implementation of the Chesapeake Bay Monitoring Program was characterized by a marked decline in the water quality of the Chesapeake Bay. The disappearance of submerged aquatic vegetation in certain regions of the Bay, declines in the abundance of some commercially and recreationally important species, increases in the incidence of low dissolved oxygen events, changes in the Bay's food web, and other ecological problems have been related to the deteriorating water quality (e.g. USEPA, 1982,1983;Officer et al.,1984; Orth and Moore, 1984). The results of concentrated research efforts in the late 1970s and early 1980s stimulated the …