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Articles 1081 - 1110 of 1357

Full-Text Articles in Natural Resources and Conservation

River Characterization Of The Assonet River May 2007

River Characterization Of The Assonet River

Watershed Access Lab Projects

Students conducted a characterization study of the Assonet River above Locust Street in Assonet, MA. They chose three sites in a third order segment of the river. Malbone Street was the most accessible site near the headwaters and was downstream from the confluence of the Cedar Swamp River and the Assonet River. The Cedar Swamp River drains a large area of wetlands (Cedar Swamp). Beechwood Street is downstream from another small wetlands and is close to Malbone Street. Locust is downstream from the Quaker Brook confluence and a section of the Assonet River called Forge Pond. The pH of all …


Footprints May 2007

Footprints

Watershed Access Lab Projects

The Whitman-Hanson Regional High School now occupies a new facility which was opened in September of 2005. The school was built as a “green school,” with numerous energy saving and environmentally beneficial features. Several new wetlands were created to deal with runoff from the grounds and building. Students in the RiverNet Club began investigating the on site wetlands which were being utilized by vernal pool animals for breeding. The observations led to questions about our environmental footprint. The runoff from the roof is collected and is used to flush the toilets. There are solar collectors on the roof. The parking …


Rivernet Watershed Access Lab Program Overview 2007, Kevin Curry May 2007

Rivernet Watershed Access Lab Program Overview 2007, Kevin Curry

Watershed Access Lab Projects

Brief overview of the RiverNet Watershed Access program - its history and the achievements of the many participating teachers and students from throughout Southeastern Massachusetts.


Case Studies Of Urban And Rural Lakes In Minnesota, Lisa M. Becker Apr 2007

Case Studies Of Urban And Rural Lakes In Minnesota, Lisa M. Becker

Honors Capstones

Capstone submitted as a graduation requirement for the BSU Honors Program.


Everglades National Park – Surveying The Southernmost Cave In The Continental United States, Lee J. Florea, Amber J. Yuellig Apr 2007

Everglades National Park – Surveying The Southernmost Cave In The Continental United States, Lee J. Florea, Amber J. Yuellig

Earth, Environmental, and Atmospheric Sciences Faculty Publications

Everglades National Park encompasses 1.5 million acres of grassland glades, tree islands, cypress strands, and mangrove marshes and is world renowned for natural vistas and wonders at the surface. The cave and karst resources in this park, however, are little known even though much of the park is underlain by limestone. In a recent communication to the authors, Alan Cressler (U.S. Geological Survey, written communication, 2006) described his visit to Palma Vista Cave in Everglades National Park last November that he originally explored and described over 13 years ago (Cressler, 1993).


Droughtscape, Spring 2007, National Drought Mitigation Center Apr 2007

Droughtscape, Spring 2007, National Drought Mitigation Center

DroughtScape: Quarterly Newsletter of the National Drought Mitigation Center (2007–2023)

2007 Spring Drought Outlook & Winter Summary

VegDRI Expands to 15 States, Refines Views

DroughtScape

State Spotlight: Utah

International Panel Foresees Drought as Part of Climate Change

NIDIS Portal Advancing


Extensions Of Local Domains With Trivial Generic Fiber, William Heinzer, Christel Rotthaus, Sylvia Wiegand Apr 2007

Extensions Of Local Domains With Trivial Generic Fiber, William Heinzer, Christel Rotthaus, Sylvia Wiegand

Nebraska Cooperative Fish and Wildlife Research Unit: Staff Publications

We consider injective local maps from a local domain R to a local domain S such that the generic fiber of the inclusion map R -> S is trivial, that is P R (0) for every nonzero prime ideal P of S. We present several examples of injective local maps involving power series that have or fail to have this property. For an extension R -> S having this property, we give some results on the dimension of S; in some cases we show dim S = 2 and in some cases dim S = 1.


Cooperative Conservation: Increasing Capacity Through Community Partnerships -- Interagency Volunteer Program: Quarterly Progress Report, Period Ending March 31, 2007, Margaret N. Rees Mar 2007

Cooperative Conservation: Increasing Capacity Through Community Partnerships -- Interagency Volunteer Program: Quarterly Progress Report, Period Ending March 31, 2007, Margaret N. Rees

Get Outdoors Nevada

  • Volunteer database increased 10 percent over last quarter to contain 3,243 records.
  • Website activity increased, recording an average of 57,930 hits per month, with an average of 5,839 pages viewed per month (17 percent increase in pages viewed).
  • Volunteer orientation program delivered to 30 active volunteers.
  • Volunteer survey related to communication, training, and recognition complete.
  • Volunteer spring training scheduled, developed, and publicized.
  • Volunteers contributed 1,400 hours in the Great American Cleanup.
  • National volunteer week recognition plan developed.


Lake Mead National Recreation Area Vegetation Monitoring And Analysis: Quarterly Progress Report, Period Ending March 31, 2007, Margaret N. Rees Mar 2007

Lake Mead National Recreation Area Vegetation Monitoring And Analysis: Quarterly Progress Report, Period Ending March 31, 2007, Margaret N. Rees

Vegetation Monitoring

Executive Summary

  • Weed Sentry staff surveyed for exotic species on 208 miles of roads on NPS land and on 61 miles of BLM land. Due to sparse precipitation this winter, exotic species are much less abundant this year compared to last year at this time.
  • Other exotic species projects initiated this quarter included an assessment of invasion patterns below native shrubs for early detection of potential invasion “hotspots,” and a community invasibility experiment established near the NPS nursery with substantial involvement from NPS ATR Ms. Alice Newton.
  • A manuscript detailing several experiments with the invasive species Sahara mustard was submitted …


I Sinkholes Nella Letteratura Scientifica Internazionale: Una Breve Rassegna, Con Particulare Riferimento Agli Stati Uniti D'America, Lee J. Florea, Mario Parise Jan 2007

I Sinkholes Nella Letteratura Scientifica Internazionale: Una Breve Rassegna, Con Particulare Riferimento Agli Stati Uniti D'America, Lee J. Florea, Mario Parise

Earth, Environmental, and Atmospheric Sciences Faculty Publications

Fenomeni di sinkholes sono diffusi in moltissimi paesi del mondo, in ambiti geologici e morfologici alquanto differenziati, e coinvolgono svariate litologie, sia nelle successioni di copertura che in quelle direttamente affioranti alla superficie. Il presente contributo intende fornire una breve rassegna, certamente non esaustiva, sullo stato dell’arte delle ricerche relative ai sinkholes in ambito internazionale. Esso consiste in una descrizione della più aggiornata e diffusa classificazione dei sinkholes e, a seguire, in descrizioni delle più tipiche casistiche di sinkholes nei vari paesi. Tra questi, viene dato particolare risalto agli Stati Uniti d’America (e, più in particolare, alla Florida), dove le …


International, Cooperative Research In The Apuseni Mountains Of Western Romania, Lee J. Florea, Bogdan P. Onac Jan 2007

International, Cooperative Research In The Apuseni Mountains Of Western Romania, Lee J. Florea, Bogdan P. Onac

Earth, Environmental, and Atmospheric Sciences Faculty Publications

In May of 2006, nine American scientists and cavers from the Karst Research Group at the University of South Florida traveled to western Romania to attend and present at an international conference on records of climate change in caves in the historic Roman town of Baile Hurculane. The conference, co-sponsored by the “Emil Racoviţă” Speleological Institute of Romania and the Karst Waters Institute, drew more than 100 experts in the field of climate change and karst, and was a wonderful time spent alongside the thermal springs and Austro-Hungarian bathhouses nestled within the massive limestone canyon of the Cerna River.

Following …


Sinkhole Distribution Based On Pre-Development Mapping In Urbanized Pinellas County, Florida, Usa, Robert Brinkmann, Kelly Wilson, Nichole Elko, Larry D. Seale, Lee J. Florea, H L. Vacher Jan 2007

Sinkhole Distribution Based On Pre-Development Mapping In Urbanized Pinellas County, Florida, Usa, Robert Brinkmann, Kelly Wilson, Nichole Elko, Larry D. Seale, Lee J. Florea, H L. Vacher

Earth, Environmental, and Atmospheric Sciences Faculty Publications

Locating sinkholes in Pinellas County, Florida, is confounded by the presence of a cover of Quaternary sediments that mute the surface appearance of these sinkholes. As a first step in addressing the sinkhole hazard in the county, we analysed aerial photographs from 1926 and 1995 that covered the entire county. We digitized all identifiable sinkholes in each set of photographs in a GIS (Geographical Information System) using a set of criteria established to differentiate between karst depressions and depressions resulting from other geological processes. The 1926 photographs, although of low quality, helped to establish a baseline prior to urbanization. The …


Droughtscape, Winter 2007, Kelly Smith Jan 2007

Droughtscape, Winter 2007, Kelly Smith

DroughtScape: Quarterly Newsletter of the National Drought Mitigation Center (2007–2023)

Subscribe Now!

Policy Update: NIDIS is Law. What’s Next?

What Would You Like to See?

TX, OK, Plains, Southwest Hardest Hit in 2006

Climatologically Speaking, How Bad Was It?

State Spotlight: Arizona

Drought Decision-Support Tools Evolving


Climate-Induced Forest Dieback As An Emergent Global Phenomenon, Craig Allen, David D. Breshears Jan 2007

Climate-Induced Forest Dieback As An Emergent Global Phenomenon, Craig Allen, David D. Breshears

Nebraska Cooperative Fish and Wildlife Research Unit: Staff Publications

An organized oral session at the annual meeting of the Ecological Society of America in San Jose, Calif., posed this question: Is climate-induced drought stress triggering increasing rates and unusual patterns of forest die-off at a global scale? Twenty-nine researchers representing five continents reported on patterns, mechanisms, and projections of forest mortality.


Joe Stell's Life, Career, & Contributions, Susan Kelly Jan 2007

Joe Stell's Life, Career, & Contributions, Susan Kelly

Water Matters!

Representative Joe Stell's retirement after 20 years in the New Mexico Legislature has many people wondering: How will we fare without his knowledge and history ofNew Mexico water matters? Stell viewed one of his most important roles as that of helping new legislators get up to speed on w ater issues. We hope that Water Matters! may assist in this role by providing legislators with background information on some of the issues they will encounter. The Utton Center also wanted to acknowledge Joe Stell's outstanding service to New Mexico, and we have therefore included a brief sketch about his career, …


Cooperative Conservation: Increasing Capacity Through Community Partnerships -- Interagency Volunteer Program: Quarterly Progress Report, Period Ending December 31, 2006, Margaret N. Rees Dec 2006

Cooperative Conservation: Increasing Capacity Through Community Partnerships -- Interagency Volunteer Program: Quarterly Progress Report, Period Ending December 31, 2006, Margaret N. Rees

Get Outdoors Nevada

  • Volunteer database increased 8% over last quarter. Database now contains 2,923 records.
  • Website activity increased, recording an average of 51,568 hits per month, with an average of 4,985 pages viewed per month (12.4% increase in pages viewed).
  • Team charter approved and signed by federal managers and IVP team.
  • Volunteer orientation and training in 11 subject areas delivered to 80 volunteers.
  • Recognition Banquet and Awards Ceremony recognized 180 volunteers.
  • Volunteer event list revised for 2007.


Water Quality Results From Indian Head River, Hanover, Ma Dec 2006

Water Quality Results From Indian Head River, Hanover, Ma

Watershed Access Lab Projects

No abstract provided.


Quashnet River Survey Dec 2006

Quashnet River Survey

Watershed Access Lab Projects

Students from Mashpee High School have been studying water quality of local rivers for a number of years. In the past, the primary focus was on two rivers that flow through the town: the Quashnet River, and Quaker Run. This school year (2006-07) the Mashpee River was added as the third watershed of interest. Each of three Earth Science classes adopted and studied one of the rivers. Students sampled each stream at headwaters and lower reaches for: macroinvertebrates, water chemistry (temperature, pH, dissolved oxygen, nitrates, and turbidity) and stream flow (velocity and volume). Data were analyzed, and PowerPoint presentations were …


Following Fall Brook Dec 2006

Following Fall Brook

Watershed Access Lab Projects

This was a study of two sites along Fall Brook, located in Middleborough, MA. Fall Brook has been monitored by MHS students over the past 10 years and is a major tributary of the Taunton River Watershed. The purpose of the study completed this year was to determine how land use affects the nitrate and phosphate levels of Fall Brook. The Wareham Street Site is located next to a horse farm and downstream from several cranberry bogs in a heavily wooded area. The Wood Street Site is located in conservation land, downstream from the Wareham Street Site and has a …


Quaker Run Watershed Analysis Dec 2006

Quaker Run Watershed Analysis

Watershed Access Lab Projects

Students from Mashpee High School have been studying water quality of local rivers for a number of years. In the past, the primary focus was on two rivers that flow through the town: the Quashnet River, and Quaker Run. This school year (2006-07) the Mashpee River was added as the third watershed of interest. Each of three Earth Science classes adopted and studied one of the rivers. Students sampled each stream at headwaters and lower reaches for: macroinvertebrates, water chemistry (temperature, pH, dissolved oxygen, nitrates, and turbidity) and stream flow (velocity and volume). Data were analyzed, and PowerPoint presentations were …


Water Quality Project: Mashpee River Study Dec 2006

Water Quality Project: Mashpee River Study

Watershed Access Lab Projects

Students from Mashpee High School have been studying water quality of local rivers for a number of years. In the past, the primary focus was on two rivers that flow through the town: the Quashnet River, and Quaker Run. This school year (2006-07) the Mashpee River was added as the third watershed of interest. Each of three Earth Science classes adopted and studied one of the rivers. Students sampled each stream at headwaters and lower reaches for: macroinvertebrates, water chemistry (temperature, pH, dissolved oxygen, nitrates, and turbidity) and stream flow (velocity and volume). Data were analyzed, and PowerPoint presentations were …


Cooperative Conservation: Increasing Capacity Through Community Partnerships - Interagency Volunteer Program: Quarterly Progress Report, Period Ending September 30, 2006, Margaret N. Rees Sep 2006

Cooperative Conservation: Increasing Capacity Through Community Partnerships - Interagency Volunteer Program: Quarterly Progress Report, Period Ending September 30, 2006, Margaret N. Rees

Get Outdoors Nevada

  • Volunteer database increased 9.5% over last quarter. Database now contains 2,698 records.
  • Website activity decreased, recording an average of 42,488 hits per month, with an average of 4,435 pages viewed per month (3.6% decrease in pages viewed).
  • Volunteer recognition ceremony scheduled for November 4 at the Renaissance Hotel, Las Vegas.
  • Fall 2006 volunteer training schedule finalized.
  • National Public Lands Day volunteer projects successfully executed at Red Rock Canyon NCA and Lake Mead NRA, with a total of 232 community volunteers contributing more than 1,000 hours toward clean-up and restoration of Southern Nevada’s public lands.
  • Team charter presented to the federal …


Cooperative Conservation: Increasing Capacity Through Community Partnerships - Interagency Volunteer Program: Quarterly Progress Report, Period Ending June 30, 2006, Margaret N. Rees Jun 2006

Cooperative Conservation: Increasing Capacity Through Community Partnerships - Interagency Volunteer Program: Quarterly Progress Report, Period Ending June 30, 2006, Margaret N. Rees

Get Outdoors Nevada

  • Volunteer database increased 12% over last quarter. Database now contains 2,471 records.
  • Website activity increased, recording an average of 52,987 hits per month, with an average of 4,596 pages viewed per month (28% increase in pages viewed).
  • Spring training sessions were delivered to 180 community volunteers.
  • 1,400 public lands volunteers were recognized during National Volunteer Week.
  • Volunteer events were successfully executed in Red Rock Canyon NCA and the Spring Mountains NRA, with 189 community volunteers contributing more than 1,000 hours.


On The Spatial Nature Of The Groundwater Pumping Externality, Nicholas Brozovic, David L. Sunding, David Zilberman May 2006

On The Spatial Nature Of The Groundwater Pumping Externality, Nicholas Brozovic, David L. Sunding, David Zilberman

Daugherty Water for Food Global Institute: Faculty Publications

Most existing economic analyses of optimal groundwater management use single-cell aquifer models, which assume that an aquifer responds uniformly and instantly to ground- water pumping. This paper demonstrates how spatially explicit aquifer response equations from the water resources engineering literature may be embedded in a general economic framework. Calibration of our theoretical model to published economic studies of spe- cific aquifers demonstrates that, by averaging basin drawdown across the entire resource, existing studies generally understate the magnitude of the groundwater pumping external- ity relative to spatially explicit models. For the aquifers studied, the drawdown predicted by single- cell models may …


The Comparison Of Leonard Washburn Brook And Poquoy Brook May 2006

The Comparison Of Leonard Washburn Brook And Poquoy Brook

Watershed Access Lab Projects

Students compared the water quality of two brooks in Lakeville, MA. Leonard-Washburn is located west of Cross Street and was accessed through private property. The brook is spring fed and drains a woodland and a forested wetland. There are few land uses that impact this brook. Land surrounding the brook has been donated to the Wetlands Trust to prevent future development. The Poquoy Brook site is located on the upstream side of the Taunton Street culvert. Land uses include cranberry farming,low density residential, an active railroad track (ConRail) and Poquoy Brook Golf Course.

Dissolved Oxygen concentrations followed a diurnal pattern …


Characterization Survey Of Rattlesnake Brook May 2006

Characterization Survey Of Rattlesnake Brook

Watershed Access Lab Projects

Students investigated whether the construction of the Stop and Shop DePot in Assonet, MA had any adverse influence on the water quality of Rattlesnake Brook. The brook drains a wetlands east of the Assonet River, passes beneath South Main Street in Assonet then passes to the west of the S & S Depot. It then enters a marsh along with Terrry Brook before reaching its confluence with the Assonet River. Water quality was found to be within normal ranges at all three sites. Nutrients were often below detection limit. Calculation for load indicated a sudden drop in nitrates between the …


Abbott Run River Study May 2006

Abbott Run River Study

Watershed Access Lab Projects

During the past year, we have studied, in detail, Abbot Run. The purpose of our study was to ensure that the river met the Massachusetts water quality standards of a Class A river. The Abbott Run is a Class A river because it is the source of the drinking water for Pawtucket, Rhode Island.

Abbott Run is a part of the Blackstone River Watershed, which is located in Massachusetts and continues into parts of Rhode Island. The river runs through North Attleboro and passes through Chemawa Golf Course, an 18-hole course.

The river was studied at two different sites about …


Survey Of Area Streams Near Hanover High School May 2006

Survey Of Area Streams Near Hanover High School

Watershed Access Lab Projects

No abstract provided.


Agawam River Study: Year 5 May 2006

Agawam River Study: Year 5

Watershed Access Lab Projects

No abstract provided.


The Contribution Of Environmental Variables On Small Mammal Species Richness And Relative Abundance In Eastern Nevada, Stephanie Harris May 2006

The Contribution Of Environmental Variables On Small Mammal Species Richness And Relative Abundance In Eastern Nevada, Stephanie Harris

UNLV Theses, Dissertations, Professional Papers, and Capstones

The purpose of this study is to determine how four environmental variables: elevation, latitude, soil type, and vegetation impact the relative abundance of Peromyscus maniculatus and the species richness of small mammal populations in Eastern Nevada. In order to complete this study, a survey of small mammals was completed in the following 8 Eastern Nevada valleys: Delamar, Dry Lake, Dry Lake- Muleshoe,Cave, Lake, Snake, Spring, White River. In each valley, transects of Sherman live traps will be set up for 3 consecutive nights (O'Farrell et al 1977). Data on elevation, latitude, soil type, and vegetation were taken at each trap …