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Biomass Partitioning Following Defoliation of Annual and Perennial Mediterranean Grasses

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dc.contributor.author Gutman, Mario en_US
dc.contributor.author Noy-Meir, Imanuel en_US
dc.contributor.author Pluda, Daniel en_US
dc.contributor.author Seligman, No'am en_US
dc.contributor.author Rothman, Steven en_US
dc.contributor.author Sternberg, Marcelo en_US
dc.date.accessioned 2009-07-31T14:54:59Z
dc.date.available 2009-07-31T14:54:59Z
dc.date.issued 2002 en_US
dc.date.submitted 2008-10-20 en_US
dc.date.submitted 2008-10-20 en_US
dc.identifier.uri https://hdl.handle.net/10535/2898
dc.description.abstract "A two-year experiment was conducted in northeastern Israel to study the effects of various defoliation regimes on biomass partitioning between vegetative and reproductive structures in a perennial and an annual Mediterranean grass. Greater insight into the mechanisms regulating biomass partitioning after defoliation enables ecologists and rangeland managers to interpret and predict population and community dynamics in Mediterranean grasslands more efficiently. Two typical Mediterranean grasses, Triticum dicoccoides, an annual species, and Hordeum bulbosum, a perennial species, were grown in containers in the open. They were subjected to a series of defoliation treatments that comprised three clipping frequencies and three clipping heights in a full factorial combination. In addition, individuals of both species were sampled in the field, in paddocks that were grazed, and in a control exclosure that was closed to grazing during the growing season. The experiment was conducted over two growing seasons, one unusually dry and one unusually wet. The clipping treatments invariably caused a reduction in the amount of biomass partitioned to the reproductive organs, but had little effect on the vegetative components of the plants. Greater tillering following defoliation compensated, to a large degree, for the loss of photosynthetic biomass following defoliation. The effect of grazing on biomass partitioning was much lower than the effect of clipping. Under grazing, the investment in reproductive biomass was considerably higher than when the grasses were clipped. The results of this experiment help to elucidate the reasons for the persistence of these species and, especially, for the dominance of Hordeum bulbosum in many eastern Mediterranean grasslands." en_US
dc.subject biomass en_US
dc.subject grasslands en_US
dc.subject grazing en_US
dc.subject land tenure and use en_US
dc.title Biomass Partitioning Following Defoliation of Annual and Perennial Mediterranean Grasses en_US
dc.type Journal Article en_US
dc.type.published published en_US
dc.coverage.region Middle East & South Asia en_US
dc.coverage.country Israel en_US
dc.subject.sector Land Tenure & Use en_US
dc.identifier.citationjournal Ecology and Society en_US
dc.identifier.citationvolume 5 en_US
dc.identifier.citationnumber 2 en_US
dc.identifier.citationmonth January en_US

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