نتایج جستجو برای: mowing

تعداد نتایج: 892  

2014
Mitka Eleftheria

The use of mowing robots in anthropic environment is increasing, leading to the call for specific safety standards. This is a challenging endeavour, however, because the user must usually be placed in the robot's workspace and the residents must frequently interact with the robot. Although specific safety standards for mowing robots do not yet exist, there are several mowing device standards an...

Journal: :Science 1998
Collins Knapp riggs Blair Steinauer

Species diversity has declined in ecosystems worldwide as a result of habitat fragmentation, eutrophication, and land-use change. If such decline is to be halted ecological mechanisms that restore or maintain biodiversity are needed. Two long-term field experiments were performed in native grassland to assess the effects of fire, nitrogen addition, and grazing or mowing on plant species diversi...

2018
Zhiying Liu Taogetao Baoyin Juan Sun Hugjiltu Minggagud Xiliang Li

While mowing-induced changes in plant traits and their effects on ecosystem functioning in semi-arid grassland are well studied, the relations between plant size and nutrient strategies are largely unknown. Mowing may drive the shifts of plant nutrient limitation and allocation. Here, we evaluated the changes in nutrient stoichiometry and allocation with variations in sizes of Leymus chinensis,...

2017
Jan J. Kuiper Michiel J. J. M. Verhofstad Evelien L. M. Louwers Elisabeth S. Bakker Robert J. Brederveld Luuk P. A. van Gerven Annette B. G. Janssen Jeroen J. M. de Klein Wolf M. Mooij

Submerged macrophytes play an important role in maintaining good water quality in shallow lakes. Yet extensive stands easily interfere with various services provided by these lakes, and harvesting is increasingly applied as a management measure. Because shallow lakes may possess alternative stable states over a wide range of environmental conditions, designing a successful mowing strategy is ch...

2012
C. Shao J. Chen L. Li L. Zhang

Mowing for hay is a widely adopted practice for grasslands utilization and management. However, its effects on energy partitioning have not well been studied. Our primary objective was to examine the role of mowing as a disturbance factor acting on energy partitioning and relationships between community composition/structure and energy fluxes in a typical steppe ecosystem through a long-term fi...

2006
A. M. Demers D. K. Berner P. A. Backman

Biological control of Canada thistle using Puccinia punctiformis has been largely unsuccessful in part due to a low incidence of systemically infected shoots and heterogeneous distribution of teliospores in the soil. The present study investigated the feasibility of strategic mowing to improve incidence of systemically infected shoots, and enhance intraand/or inter-season disease development in...

Journal: :The Journal of trauma 2001
M J Bull P Agran H G Gardner D Laraque S H Pollack G A Smith H R Spivak M Tenebein R A Brenner S Bryn C Neverman R A Schieber R Stanwick D Tinsworth V Garcia R Tanz M L Katcher H Newland

Lawn mower-related injuries to children are relatively common and can result in severe injury or death. Many amputations during childhood are caused by power mowers. Pediatricians have an important role as advocates and educators to promote the prevention of these injuries.

2005
Martin Drechsler Frank Wätzold Karin Johst Holger Bergmann Josef Settele

An approach is present which integrates an economic and an ecological model for designing cost-effective compensation payments for conservation of endangered species in real landscapes. The approach is used to develop a cost-effective compensation payment scheme for conservation of an endangered butterfly species (Maculinea teleius) protected by the EU Habitats Directive in the region of Landau...

2017
Björn Ringselle Erik Bertholtz Ewa Magnuski Lars Olav Brandsæter Kjell Mangerud Göran Bergkvist

Tillage controls perennial weeds, such as Elymus repens, partly because it fragments their underground storage organs. However, tillage is difficult to combine with a growing crop, which limits its application. The aim of this study was to evaluate how soil vertical cutting with minimum soil disturbance and mowing affect the growth and competitive ability of E. repens in a grass-clover crop. A ...

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