scholarly journals Chemical and biotic characteristics of prairie lakes and large wetlands in south-central North Dakota—Effects of a changing climate

Author(s):  
David M. Mushet ◽  
Martin B. Goldhaber ◽  
Christopher T. Mills ◽  
Kyle I. McLean ◽  
Vanessa M. Aparicio ◽  
...  
2016 ◽  
Vol 80 (4) ◽  
pp. 1003-1010 ◽  
Author(s):  
Jonathan J. Halvorson ◽  
Mark A. Liebig ◽  
David W. Archer ◽  
Mark S. West ◽  
Donald L. Tanaka

Wetlands ◽  
2016 ◽  
Vol 36 (4) ◽  
pp. 779-787 ◽  
Author(s):  
Brian A. Tangen ◽  
Raymond G. Finocchiaro ◽  
Robert A. Gleason ◽  
Charles F. Dahl

2020 ◽  
Vol 101 (12) ◽  
pp. E2138-E2148
Author(s):  
Elinor Martin ◽  
Renee McPherson ◽  
Emma Kuster ◽  
Aparna Bamzai-Dodson

AbstractWe developed a blended (or hybrid) interactive course—Managing for a Changing Climate—that provides a holistic view of climate change. The course results from communication with university students and natural and cultural resource managers as well as the need for educational efforts aimed at the public, legislators, and decision-makers. Content includes the components of the physical climate system, natural climate variability, anthropogenic drivers of climate change, climate models and projections, climate assessments, energy economics, environmental policy, vulnerabilities to climate hazards, impacts of climate change, and decision-making related to climate adaptation and mitigation efforts. To convey most of the content, the course-development team created over 50 short videos (3–10 min each) in partnership with experts from a variety of academic, government, and industry institutions. The blended course has been offered as an upper-division, undergraduate course in the Department of Geography and Environmental Sustainability and School of Meteorology (four times) and College of International Studies (in Italy, once) at the University of Oklahoma with over 100 total students. The course has also been presented online-only at no cost to the participants in four fall semesters with over 1,000 total registrations. Videos created for this course are freely available on the YouTube page of the South Central Climate Adaptation Science Center. This course and its associated materials comprise high-quality, formal climate training and education that can be adapted to other formal and informal education settings beyond the walls of the university.


1984 ◽  
Vol 48 (2) ◽  
pp. 340 ◽  
Author(s):  
George A. Swanson ◽  
Vyto A. Adomaitis ◽  
Forrest B. Lee ◽  
Jerome R. Serie ◽  
John A. Shoesmith

1982 ◽  
Vol 46 (3) ◽  
pp. 629 ◽  
Author(s):  
Larry G. Talent ◽  
Gary L. Krapu ◽  
Robert L. Jarvis

1976 ◽  
Vol 54 (10) ◽  
pp. 1688-1693 ◽  
Author(s):  
A. M. Cvancara

Aquatic mollusks occurred in North Dakota during the last 12 000 years as follows: 12 000–10 000 years ago, 19 species (dated material from 3 sites); 10 000–8000 years ago, 22 species (dated material from 5 sites); 8000–4000 years ago, 11 species (material of inferred age from 2 sites); 4000 years ago to present, 36 species (dated material from 1 site and material of inferred age from 23 sites); and present day, 44 species (material from about 300 stations). The gastropods Valvata sincera (Say), Fossaria decampi (Streng), and Helisoma campanulatum (Say) have not been found in sediments younger than about 9600 years. They may have become regionally extinct about 9000 years ago because of a warmer, drier climate and a corresponding increase of dissolved salts in surface waters. Of two hydrobiid gastropods, Amnicola limosa (Say) has not been found in sediments younger than about 9000 years and has been found at relatively few localities today. Cincinnatia cincinnatiensis (Anthony) has not been found in sediments older than about 2500 years and has been found at many localities today. The occurrence of these two species with time may also be the result of changing climate and surface-water chemistry.


The Condor ◽  
1983 ◽  
Vol 85 (1) ◽  
pp. 74-78 ◽  
Author(s):  
Larry G. Talent ◽  
Robert L. Jarvis ◽  
Gary L. Krapu
Keyword(s):  

1985 ◽  
Vol 49 (1) ◽  
pp. 197 ◽  
Author(s):  
George A. Swanson ◽  
Mavis I. Meyer ◽  
Vyto A. Adomaitis
Keyword(s):  

Plant Disease ◽  
2006 ◽  
Vol 90 (4) ◽  
pp. 527-527 ◽  
Author(s):  
P. B. Schwarz ◽  
S. M. Neate ◽  
G. E. Rottinghaus

Ergot, caused by Claviceps purpurea (Fr.) Tul., occurs every year on cereals and grasses in North Dakota, but the occurrence on barley (Hordeum vugare L) is generally sporadic with a very low incidence of sclerotia. Disease surveys conducted during the 2005 growing season revealed an unusually widespread occurrence. This is of concern since barley production in North Dakota was estimated at 1.25 million metric tons, 27% of the total 2005 U.S. production. Barley samples (n = 304, ~0.50 kg) collected in all crop-reporting districts of North Dakota, northwestern Minnesota, and northeastern Montana, as part of an annual regional survey of barley crop quality (4), were examined for sclerotia. All barley samples were cleaned for dockage, and ergot (% [w/w]) was estimated on subsamples of ~100 g from a sample divider. Of all barley samples collected, 62% contained ergots. The regional average for ergot infested kernels was 0.06%, and samples ranged from <0.01 to 1.19%. Approximately 15% of all samples were in excess of 0.10% ergots and would have been downgraded to ergoty barley under the Official United States Standards for Grain. Occurrence of ergot was most common in northwestern Minnesota and the three eastern and north-central districts of North Dakota. Ergot was less frequent in the south-central and three western districts of North Dakota and was not detected in samples from northeastern Montana. Floret infection occurs during and up to 15 days after anthesis (2), and in the three eastern and north-central districts of North Dakota that occurred around the last week in June and first week in July. Between 22 June and 4 July, the North Dakota Agricultural Weather Network Stations in that region recorded average daily temperatures of 99% of the 30-year norm, but multiple precipitation events amounted to 227% of the 30-year norm. Rain splash and associated high relative humidity favor conidiation and spread of the fungus (1) and may have contributed to the high disease incidence. Average sclerotia weight for a sample ranged from <10 to 70 mg. However, large sclerotia (37 to 180 mg) often were removed by the no. 6 riddle of the dockage tester and were not counted in the ergot estimates as per U.S. Grading Standards. Samples containing 1.19, 0.81, 0.22, 0.14, 0.05, and 0.02% ergots were analyzed for ergopeptine alkaloids (3). These were found to contain 27.9, 25.4, 2.4, 1.1, 1.7, and 5.7 μg/g ergopeptine alkaloids, respectively. The average ratio of ergosine/ergotamine/ergocornine/ergocryptine/ergocristine was approximately 1:2:2:3:9. There also was widespread occurrence of the Fusarium mycotoxin deoxynivalenol (DON) on North Dakota barley in 2005. While there was no apparent relationship between the level of the DON and the amount of ergot in the samples (r = 0.042), more than 90% of samples with ergot had detectable levels (0.1 to 69 μg/g) of DON. While only DON is routinely measured in the crop survey (4), other tricothecenes and zearalenone have also been detected. This should be of concern to livestock producers and grain processors since the potential interactions of multiple mycotoxins are not well known. References: (1) G. M. Marshall. Ann. Appl. Biol. 48:19, 1960. (2) S. B. Puranik and D. E. Mathre. Phytopathology 61:1075, 1971. (3) G. E. Rottinghaus et al. J. Vet. Diag. Invest. 5:242 1993. (4) P. B. Schwarz et al. J. Am. Soc. Brew. Chem. 64:1, 2006.


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