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| Harr, Ryan N.; Iowa Department of Natural Resources; Iowa State University; ryan.harr@dnr.iowa.gov; Wright Morton, Lois; Iowa State University; lwmorton@iastate.edu; Rusk, Shannon R.; Iowa State University; rusk@iastate.edu; Engle, David M.; Oklahoma State University; david.engle@okstate.edu; Miller, James R.; University of Illinois at Urbana-Champaign; jrmillr@illinios.edu; Debinski, Diane; Iowa State University; debinski@iastate.edu. |
| Ecologists recognize that fire and herbivory are essential to maintaining habitat quality in grassland ecosystems. Prescribed fire and grazing are typically used on public reserves to increase biodiversity, improve grassland productivity, and control encroachment of woody plants. However, these tools, particularly prescribed fire, have not been widely adopted by private landowners. Fire suppression and prescribed fire are strategies that present competing risks to owners who make management decisions. We explore landowner perceptions of risk associated with (1) eastern redcedar (Juniperus virginiana) encroachment, and (2) the use of prescribed fire to control woody species in the Grand River Grasslands of Iowa and Missouri, USA. We found that although... |
| Tipo: Peer-Reviewed Reports |
Palavras-chave: Concept mapping; Eastern redcedar; Fire suppression; Grassland management; Landowner perception; Prescribed fire; Private landowners; Risk perception; Tallgrass prairie. |
| Ano: 2014 |
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| Sousa,Braulio Maia de Lana; Vilela,Hélio Henrique; Santos,Andreza Luzia; Santos,Manoel Eduardo Rozalino; Nascimento Júnior,Domicio do; Assis,Camila Zimmer de; Faria,Bruno Damaceno; Rocha,Gabriel de Oliveira. |
| The objective of this study was to evaluate the mass of the forage and of the morphological components, and the sward structure in Piata palisadegrass (Brachiaria brizantha cv. Piata) deferred in function of different initial heights and nitrogen levels. Two levels of nitrogen (75 and 150 kg/ha) and one control without fertilization associated to three initial deferring heights (20, 30, and 40 cm) were evaluated. The design was of completely randomized blocks with three replications in a subdivided plot scheme. A raise in the initial deferment height and in the fertilization elevated the sward and extended tiller heights, the leaf area index, and the light interception by the sward. The piata palisadegrass deferred with an initial height of 40 cm presented... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brachiaria brizantha; Ecophysiology; Grassland management. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000500008 |
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