Mario Gutman

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The draining of the Lake Hula and swamps, northern Israel, during the late 1950s resulted in the loss of a very diverse and rare ecosystem. Oxidation of the peat soil resulted in ground surface subsidence, while heavy autumn winds have eroded the dry peat. Moreover, agriculture on the peat soils is restricted, because of a nitrate surplus. Predictions that(More)
A grazing trial was conducted over 10 years to determine the feasibility of using beef cattle to graze a Mediterranean oak scrub forest that for millennia had been grazed by mixed herds of domestic ruminants dominated by goats. After initial thinning of the woody vegetation, two large paddocks were stocked with cross-bred beef cows, one at a relatively(More)
A synthesis of a long-term (19 years) study assessing the effects of cattle grazing on the structure and composition of a Mediterranean grassland in north-eastern Israel is presented, with new insights into the response of the vegetation to grazing management and rainfall. We hypothesized that the plant community studied would be resistant to high grazing(More)
1. Metabolism of tritiated water and 22sodium was studied in six beef cows under Mediterranean summer conditions in order to find whether the turnover of these tracers can be used to evaluate pasture intake. 2. The diet of the cows included ad libitum access to two components which were given separately in different troughs: one was poultry litter and the(More)
Carrion odors of various flowers have traditionally been considered an adaptation for attracting the flies and beetles that pollinate them. In addition to this classic reproductive signaling, Lev-Yadun et al. proposed that it may also have another, overlooked, anti-herbivore defensive function. They suggested that such odors may also deter mammalian(More)
Widely -contrasting stocking rates and grazing schedule treatments were imposed upon a Mediterranean herbaceous community in northern Israel. Botanical composition was monitored for 3 years. The vegetative community was found to be highly resilient to the treatments. Perennial grasses and legumes were among the resilient plants. These results are consistent(More)
Recently, it has been proposed on theoretical grounds that carrion odor from flowers may not only attract pollinators, but also repel mammalian herbivores. Two grazing experiments involving 16 to 26 cattle heads per year, one for eight years (1982-1989) and the other for seven (1994-2000), in a region with no large carnivores that could influence cattle(More)
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