scholarly journals Isotopic evidence for the role of plant development on transpiration in deciduous forests of southern United States

2003 ◽  
Vol 17 (2) ◽  
pp. n/a-n/a ◽  
Author(s):  
Germán Mora ◽  
A. Hope Jahren
Keyword(s):  
United States ◽  
Plant Development ◽  
Deciduous Forests ◽  
Southern United States ◽  
Isotopic Evidence

The Role of Leadership in Surviving a School Shooting

2017 ◽  
Vol 21 (2) ◽  
pp. 3-14 ◽  
Author(s):  
Carleton H. Brown
Keyword(s):  
United States ◽  
Middle School ◽  
Lived Experiences ◽  
Youth Violence ◽  
School Leaders ◽  
School Principal ◽  
School Shooting ◽  
Southern United States ◽  
Rural Middle School

At a small rural middle school in the southern United States, two students murdered a teacher, four students, and injured 10 during a shooting spree. This case represents the lived experiences of a school principal, counselor, and community that survived the deadly rampage. The case highlights the challenges that school leaders may face such as making quick decisions, managing volunteers, and assisting faculty, staff, students, and parents in returning to a level of normalcy. Although the experience is based on a real event, all identifying information (i.e., location, names) has been masked with pseudonyms. The case encourages discussion and reflection among school leaders in responding to youth violence on school campuses.

Quantifying the role of State and private forest lands in providing surface drinking water supply for the Southern United States

2020 ◽  
Author(s):  
Ning Liu ◽  
G. Rebecca Dobbs ◽  
Peter V. Caldwell ◽  
Chelcy Ford Miniat ◽  
Paul V. Bolstad ◽  
...  
Keyword(s):  
United States ◽  
Drinking Water ◽  
Water Supply ◽  
Drinking Water Supply ◽  
Southern United States ◽  
Private Forest ◽  
Forest Lands

Quantifying the role of National Forest System lands in providing surface drinking water supply for the Southern United States

2014 ◽  
Author(s):  
Peter Caldwell ◽  
Corinne Muldoon ◽  
Chelcy Ford-Miniat ◽  
Erika Cohen ◽  
Suzanne Krieger ◽  
...  
Keyword(s):  
United States ◽  
Drinking Water ◽  
Water Supply ◽  
Drinking Water Supply ◽  
Southern United States ◽  
National Forest

scholarly journals First Description of the Causal Agent of Taproot Decline of Soybean, an Emerging Disease in the Southern United States

2017 ◽  
Vol 18 (1) ◽  
pp. 35-40 ◽  
Author(s):  
Tom Allen ◽  
Burt Bluhm ◽  
Kassie Conner ◽  
Vinson Doyle ◽  
Trey Price ◽  
...  
Keyword(s):  
United States ◽  
Lateral Roots ◽  
Morphological Characters ◽  
Causal Agent ◽  
Southern United States ◽  
Unknown Etiology ◽  
Symptom Expression ◽  
Production Region ◽  
Soybean Plants

Over the past decade, a soybean root issue of unknown etiology has been observed across a widespread geography in the southern United States. Recently, pathologists began referring to the problem as taproot decline of soybean, based on the appearance of root symptoms. Taproot decline has been observed to cause foliar symptoms in vegetative and reproductive soybean plants ranging in maturity from V6 to R6. Symptom expression can appear similar to other notable root-associated diseases except that taproot decline exhibits a progression of symptom expression from subtle to severe interveinal chlorosis during the season. However, one distinct symptom associated with taproot decline is observed as darkened, black stroma on the taproot and, in some cases, the lateral roots of affected plants. Pathogenicity was confirmed by isolating the suspected fungus from naturally-infected soybean roots in multiple states and completing Koch’s postulates. The causal agent was identified, based on morphological characters and multilocus phylogenetic inference, as a member of the Xylaria arbuscula aggregate. At present, research projects are underway to address the role of the newly described disease and extent of the pathogen in the southern soybean production region in addition to developing integrated strategies for managing the disease.

scholarly journals A Novel Ilarvirus Is Associated with Privet Necrotic Ringspot Disease in the Southern United States

2016 ◽  
Vol 106 (1) ◽  
pp. 87-93 ◽  
Author(s):  
Nina Aboughanem-Sabanadzovic ◽  
Ioannis E. Tzanetakis ◽  
Amanda Lawrence ◽  
Ronald C. Stephenson ◽  
Sead Sabanadzovic
Keyword(s):  
United States ◽  
Phylogenetic Analyses ◽  
Southern United States ◽  
Mechanical Transmission ◽  
Serological Tests ◽  
Double Stranded Rna ◽  
The Family ◽  
Ligustrum Japonicum ◽  
Systemic Infections

Necrotic ringspot disease (NRSD) is a graft-transmissible disorder of privet (synonym ligustrum), originally reported from Florida and Louisiana more than 50 years ago. In this communication we report an isometric virus isolated from Japanese privet (Ligustrum japonicum) collected in the southern United States displaying symptoms resembling those of NRSD. In mechanical transmission tests, the virus induced systemic infections in several herbaceous hosts. Double-stranded RNA analysis showed a pattern resembling replicative forms of members of the family Bromoviridae. The genome organization along with phylogenetic analyses and serological tests revealed that the virus belongs to subgroup 1 of the genus Ilarvirus. Pairwise comparisons with recognized ilarviruses indicated that the virus is a distinct, and as yet, undescribed member in the taxon, for which we propose the name Privet ringspot virus (PrRSV). Furthermore, the near-perfect association of PrRSV infections with symptoms, and apparent absence of any other virus(es) in studied samples, strongly suggest an important role of this virus in the etiology of NRSD of privet in the southeastern United States.

Role of Conservation Tillage in Sustainable Agriculture in the Southern United States

2017 ◽  
pp. 209-229 ◽  
Author(s):  
Donald D. Tyler ◽  
Michael G. Wagger ◽  
Daniel V. McCracken ◽  
William L. Hargrove
Keyword(s):  
United States ◽  
Sustainable Agriculture ◽  
Conservation Tillage ◽  
Southern United States

Drinking behaviour in Anolis carolinensis (Voigt, 1837) andOplurus cuvieri (Gray, 1831) (Reptilia: Iguania: Iguanidae)

1999 ◽  
Vol 77 (7) ◽  
pp. 1136-1146 ◽  
Author(s):  
F Wagemans ◽  
M Chardon ◽  
J -P Gasc ◽  
S Renous ◽  
V L Bels
Keyword(s):  
United States ◽  
Buccal Cavity ◽  
Sister Group ◽  
Anolis Carolinensis ◽  
Southern United States ◽  
Drinking Behaviour ◽  
X Ray ◽  
Small Reservoirs ◽  
Lacerta Viridis

The aim of this study is to describe the drinking mechanism in two iguanid species, Anolis carolinensis and Oplurus cuvieri. Both live in varied ecological environments where water may be either very abundant or exceedingly scarce. Anolis carolinensis is an arboreal species of the southern United States; in its environment, water is constantly available in drops or small reservoirs. Oplurus cuvieri lives in northwestern Madagascar, enduring very dry and very wet seasons and high insolation. In the dry season, few pools of water or dewdrops remain available. Light and X-ray filming of drinking revealed that the two species almost always use similar mechanisms to introduce water into the buccal cavity. During immersion, the tongue is used to collect water and push it from the front to the back of the buccal cavity. During emersion, water reaches the esophagus, mainly as a result of gravity. In A. carolinensis, this mechanism is used regardless of the amount of water available. In O. cuvieri, the role of the tongue is less important when water is abundant. In similar conditions, therefore, the two species of Iguania use similar mechanisms for collecting and swallowing water. This drinking mechanism has been observed in Lacerta viridis in the sister-group Scleroglossa.

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