The Grizzly, November 10, 1989

Wismer Staff Pleads Innocence: Verdict? • Museum Safe and Sound • Dinner for Visitors • Letters: Get to the Point!; GDI Tired of Greek Rights at U.C.; Pro-Life Prof Speaks for Babies • U.C.\u27s Very Vibrant Voices • Opinion: Global Warming • Promoting Condom Sensehttps://digitalcommons.ursinus.edu/grizzlynews/1246/thumbnail.jp

The Grizzly, March 26, 1990

Wismer Plans Alternatives • Reaction to Idaho Law • 101 Blaze Update • Letters: Cleaning Service Working?; Fix, Please! • Broaden our Horizons • Sex and Religion • Doughty Discusses Seminar • Time is Now for Men\u27s Lacrosse • Bears Win First • Track Team Beats the Cold • Hackers No More • Tennis Sweep • Bears Roll • Comedy Plays at Ritter • This Week\u27s Video Reviews • Fun With Jell-Ohttps://digitalcommons.ursinus.edu/grizzlynews/1255/thumbnail.jp

The Grizzly, September 22, 1989

Kane Claiming Greeks Shall Survive • Olin Noise Annoys All • Letters: Boot Booze Begs Senior; Rovers Rotten • DiFeliciantonio: A Mouthful • McNulty Directs Residents • Surprise, surprise! UC Stomps Swarthmore • Ursinus Closes Gap with F&M Diplomats • Commentary; Why Bush War Can\u27t be Won; HPER Lab a Strong Addition • Intramurals: Full Steam Ahead! • One Giant Step • Sports Summary • Pledging: End of an Era? • BWC Causes Electrical Overloadhttps://digitalcommons.ursinus.edu/grizzlynews/1241/thumbnail.jp

The Grizzly, September 15, 1989

Greek Golden Age Growing Dark • U.C. Slasher Case Finally Closed • Letters: Physics Major Majorly Miffed; Wismer Eggs on Disgusted Diner • SAO Makes Room for Zimmer • Go Abroad: It\u27s Worth It • Mann\u27s Soda Can Hit with Crowd • Bears Upset Hoyas in Season Opener • Grizzlies Take Tourney with Defense • V-ball: Victors! • Endurance is Key • Athletes of the Week • Pledging: Git! • Myrin Booking • Lucas Heads Frosh Seminar • Dumas: Cook of Monte Cristo • Smith Donation • Freshmen Make Necessary Adjustmentshttps://digitalcommons.ursinus.edu/grizzlynews/1240/thumbnail.jp

The Grizzly, May 2, 1989

Greeks Grab Spotlight • Grad. Speakers Tapped • Benedict No.1 • Letter: Racism! Not Just Rednecks • Williams\u27 Farewell • Richter Honored • ISIC\u27s for Going Abroad • The Arena: Seeking Opinions • Trenton Draws First Blood • U.C. Hits Stumbling Block • Positive for MAC\u27s • Crabs and Fries: The Spice of Life • Dance Marathon Coming • Senior Altruism Needed • Seniors\u27 Lasting Impressions: Your Most Memorable Moments at U.C.? • Final Exam Schedulehttps://digitalcommons.ursinus.edu/grizzlynews/1237/thumbnail.jp

The Grizzly, November 3, 1989

Wismer Woes • Curriculum Changes Affect all Students at U.C. • Letters: A Voice for Love ; Coaching Cowardess • Alcohol Awareness • Club Sails Smoothly • For Nature\u27s Nurture • Bears Struggle with Division I • Honors Galore • X-C Teams Look to MAC\u27s • Hoopla!https://digitalcommons.ursinus.edu/grizzlynews/1245/thumbnail.jp

The Grizzly, October 13, 1989

Berman Opening Draws Near • Sculptor Chadwick Visits UC • Frats Angered • Letters: Grizzly, Get on the Ball!; Shape up!; Dump Starkist! • Michener Opens Museum • Swarthmore, Hopkins Defeated • V-Ball Wins • Hockey Squad Beats Nationally Ranked Teams • 1989 Candidates for Homecoming Queen • Soccer Looks to Future • Wagner Runs Wild • Athletes of the Week • Control Pledging Power Abuses • The Wismer Beastieshttps://digitalcommons.ursinus.edu/grizzlynews/1243/thumbnail.jp

The Grizzly, April 23, 1990

Earth Day: Success! • Ready for Graduation • Letters: New Curriculum Comments; Studio Cottage Vandal Victims; In Support of Sanger • Condom Commission Report • New Meal Plans Next Year • Tracksters Finish Season at MACs • Lady Bears Run Ahead • Netters Roll • Bears Bounce • Hackers No More • Why Earth Day? • Earth Day: Serious? • RAs for 90-91 • Support Your Local RA • Art at UC • Tunnel Steams BWC • Lisa\u27s Heart\u27s in Art • Soda Can\u27s Debut • Video Reviews • Promotions for Faculty • Desktop Aids New Editor • Exam Schedulehttps://digitalcommons.ursinus.edu/grizzlynews/1256/thumbnail.jp

The Grizzly, April 16, 1991

Alcohol Policy Changes Discussed • Reimert Fire Breaks Up Sorority Rush: Deliberate or Accidental Still Unknown • Faculty Evaluates Frat Pledges Performance • Economics Conference Held • U.S.G.A. Minutes • Conflict and Creativity: ProTheatre Does it Again • Is Rock and Roll Really Dead? • REM: Out of Time • The Cider House Rules, Revisited • Religious Significance of David • Plaza Suite in Wismer • Jack Spinella Named New Basketball Coach • Men\u27s Track Falls to Hopkins • Men\u27s Lax Goes 1 and 1 This Week • Women Run Over Muhlenberg • Softball Splits • Golf Below Par • Student Input on Alcohol Policy Inadequate • Schafer Demands Opinion • Hold on to Your Key Money? • Letters: Apathy Dialog Proposed; Sorry, Harley; Thanks, Judd!; Weakly not Weekly • The Cutting Edge of Surgery • Electron Microscope to be Purchased With Kresge Grant • Help for Chronic Fatigue Sufferershttps://digitalcommons.ursinus.edu/grizzlynews/1276/thumbnail.jp

Identifying Urine Patches on Intensively Managed Grassland Using Aerial Imagery Captured From Remotely Piloted Aircraft Systems

The deposition of livestock urine and feces in grazed fields results in a sizable input of available nitrogen (N) in these soils; therefore significantly increasing potential nitrogen pollution from agricultural areas in the form of nitrous oxide (N2O), ammonia (NH3), and nitrate (NO3−). Livestock deposition events contributes to high spatial variability within the field and generate uncertainties when assessing the contribution that animal waste has on nitrogen pollution pathways. This study investigated an innovative technique for identifying the spatial coverage of urine deposition in grasslands without the need for manual soil measurements. A Remotely Piloted Aircraft System (RPAS) using a twin camera system was used to identify urine patches in a 5 ha field, which had been grazed by sheep 3 weeks previous to measurements. The imagery was processed using Agisoft Photoscan (Agisoft LLC) to produce true and false color orthomosaic imagery of the entire field. Imagery of five areas (225 m2) within the field were analyzed using a custom R script. For a total of 1,125 m2 of grassland, 12.2% of the area consisted of what was classified as urine patch. A simple up-scaling method was applied to these data to calculate N2O emissions for the entire field providing an estimate of 1.3–2.0 kg N2O-N ha−1 emissions from urine and fertilizer inputs