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Institution

University of Nebraska–Lincoln

EducationLincoln, Nebraska, United States
About: University of Nebraska–Lincoln is a education organization based out in Lincoln, Nebraska, United States. It is known for research contribution in the topics: Population & Poison control. The organization has 28059 authors who have published 61544 publications receiving 2139104 citations. The organization is also known as: Nebraska & UNL.


Papers
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Journal ArticleDOI
TL;DR: The goal is to provide behavioral ecologists with a toolbox of current methods that can stimulate novel insights into the ecological influences and evolutionary pressures structuring networks and advance the understanding of the proximate and ultimate processes that drive animal sociality.
Abstract: Social network analysis provides a broad and complex perspective on animal sociality that is widely applicable to almost any species. Recent applications demonstrate the utility of network analysis for advancing our understanding of the dynamics, selection pressures, development, and evolution of complex social systems. However, most studies of animal social networks rely primarily on a descriptive approach. To propel the field of animal social networks beyond exploratory analyses and to facilitate the integration of quantitative methods that allow for the testing of ecologically and evolutionarily relevant hypotheses, we review methodological and conceptual advances in network science, which are underutilized in studies of animal sociality. First, we highlight how the use of statistical modeling and triadic motifs analysis can advance our understanding of the processes that structure networks. Second, we discuss how the consideration of temporal changes and spatial constraints can shed light on the dynamics of social networks. Third, we consider how the study of variation at multiple scales can potentially transform our understanding of the structure and function of animal networks. We direct readers to analytical tools that facilitate the adoption of these new concepts and methods. Our goal is to provide behavioral ecologists with a toolbox of current methods that can stimulate novel insights into the ecological influences and evolutionary pressures structuring networks and advance our understanding of the proximate and ultimate processes that drive animal sociality.

388 citations

Journal ArticleDOI
TL;DR: In this article, the authors discuss the challenge of effectively managing human resources requires new thinking and approaches, and extend the traditional perspective of economic capital, increasing recognition is being given to human resources.
Abstract: Meeting the challenge of effectively managing human resources requires new thinking and approaches. To extend the traditional perspective of economic capital, increasing recognition is being given ...

387 citations

Journal ArticleDOI
TL;DR: A model in which adventitious rooting is an adaptive developmental response involving crosstalk between the auxin and jasmonate regulatory pathways is proposed.
Abstract: Vegetative shoot-based propagation of plants, including mass propagation of elite genotypes, is dependent on the development of shoot-borne roots, which are also called adventitious roots. Multiple endogenous and environmental factors control the complex process of adventitious rooting. In the past few years, we have shown that the auxin response factors ARF6 and ARF8, targets of the microRNA miR167, are positive regulators of adventitious rooting, whereas ARF17, a target of miR160, is a negative regulator. We showed that these genes have overlapping expression profiles during adventitious rooting and that they regulate each other's expression at the transcriptional and posttranscriptional levels by modulating the homeostasis of miR160 and miR167. We demonstrate here that this complex network of transcription factors regulates the expression of three auxin-inducible Gretchen Hagen3 (GH3) genes, GH3.3, GH3.5, and GH3.6, encoding acyl-acid-amido synthetases. We show that these three GH3 genes are required for fine-tuning adventitious root initiation in the Arabidopsis thaliana hypocotyl, and we demonstrate that they act by modulating jasmonic acid homeostasis. We propose a model in which adventitious rooting is an adaptive developmental response involving crosstalk between the auxin and jasmonate regulatory pathways.

387 citations

Journal ArticleDOI
TL;DR: Moran et al. as discussed by the authors used remotely sensed imagery to compare differ- crop management methods is difficult and expensive ent vegetation indices as a means of assessing canopy variation and where available, remotely sensed images its resultant impact on corn (Zea mays L.) grain yield.
Abstract: ground-based booms, aircraft, or satellites—is a potentially important source of data for site-specific crop manRemote sensing—the process of acquiring information about obagement, providing spatial and temporal information jects from remote platforms such as ground-based booms, aircraft, or satellites—is a potentially important source of data for site-specific (NRC, 1997). Obtaining temporal information that is crop management, providing both spatial and temporal information. detailed and spatially distributed from other site-specific Our objective was to use remotely sensed imagery to compare differ- crop management methods is difficult and expensive ent vegetation indices as a means of assessing canopy variation and (NRC, 1997). Where available, remotely sensed images its resultant impact on corn (Zea mays L.) grain yield. Treatments show spatial and spectral variations resulting from soil consisted of five N rates and four hybrids, which were grown under and crop characteristics. One potential advantage of irrigation near Shelton, NE on a Hord silt loam in 1997 and 1998. remote-sensing imagery is that it is not limited by samImagery data with 0.5-m spatial resolution were collected from aircraft pling interval or geostatistical interpolation, as has been on several dates during both seasons using a multispectral, four-band implied for grid-sampled soil test data (Moran et al., [blue, green, red, and near-infrared reflectance] digital camera system. 1997). Imagery was imported into a geographical information system (GIS) and then georegistered, converted into reflectance, and used to com- For more than 30 yr, remote sensing has been envipute three vegetation indices. Grain yield for each plot was determined sioned as a valuable source of information for crop at maturity. Results showed that green normalized difference vegeta- management. The pioneering research of Colwell (1956) tion index (GNDVI) values derived from images acquired during showed that infrared aerial photography could be used midgrain filling were the most highly correlated with grain yield; to detect loss of vigor from disease in wheat (Triticum maximum correlations were 0.7 and 0.92 in 1997 and 1998, respectively. aestivum L.) and other small grains. One of the earliest Normalizing GNDVI and grain yield variability within hybrids im- digital remote-sensing analysis procedures developed to proved the correlations in both years, but more dramatic increases identify the vegetation contribution in an image was the were observed in 1997 (0.7 to 0.82) than in 1998 (0.92 to 0.95). This ratio vegetation index (RVI), created by dividing nearsuggested GNDVI acquired during midgrain filling could be used infrared reflectance (NIR) by red reflectance (Jordan, to produce relative yield maps depicting spatial variability in fields,

387 citations


Authors

Showing all 28272 results

NameH-indexPapersCitations
Donald P. Schneider2421622263641
Suvadeep Bose154960129071
David D'Enterria1501592116210
Aaron Dominguez1471968113224
Gregory R Snow1471704115677
J. S. Keller14498198249
Andrew Askew140149699635
Mitchell Wayne1391810108776
Kenneth Bloom1381958110129
P. de Barbaro1371657102360
Randy Ruchti1371832107846
Ia Iashvili135167699461
Yuichi Kubota133169598570
Ilya Kravchenko132136693639
Andrea Perrotta131138085669
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Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
202393
2022381
20212,809
20202,977
20192,846
20182,854