منابع مشابه
Catching Fish and Avoiding Sharks
Although researchers agree that the first 5 years of life are critical for children’s developing executive functions (EFs), further advances are hindered by a lack of consensus on the design and selection of developmentally appropriate EF tasks for young children. Given this debate, well-established adult measures of EF routinely have been adapted for young children. Given young children’s comp...
متن کاملAnglers’ Probabilities of Catching Record-Size Fish
—Most state fishery management agencies publish lists of the largest (e.g., 10, 25, and 50) specimens of each species captured by anglers. We fitted normal distributions for smallmouth bass Micropterus dolomieu and striped bass Morone saxatilis and a mixture of two normal distributions of largemouth bass Micropterus salmoides to the length of time that individual fish had been present on lists ...
متن کاملMuskrat Control in the Netherlands
Muskrats were introduced into Europe and have now spread over this part of the world. Their success as a colonizing species is discussed, as well as the problems they create in a man-made environment. Due to their successfulness, a strict control program has been changed to a management program in order to keep numbers below the level at which intolerable damage occurs. The territory of the Net...
متن کاملMathematical model of echolocation of fish-catching bats
The ability of bats to prey on the insects and catch fish on thewing bymeans of echolocation is remarkable, since the acoustic power transmission through air–water interface is very small. A mathematical model describing the way in which a bat can detect fish under the water surface is suggested in this article. The problem of scattering of the spherical acoustical wave from the water with the ...
متن کاملMuskrat Control and Damage Prevention
Although the muskrat, Ondatra zibethica, is native throughout most of the United States and has been a mainstay of the fur business, in recent years it has become a serious pest causing extensive damage to some specific crops, as well as to earthen water-holding structures. Damage caused by muskrats to rice crops, food fish, and bait fish reservoirs in Arkansas was estimated in 1967 to be almos...
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ژورنال
عنوان ژورنال: Blue Jay
سال: 1970
ISSN: 2562-5667,0006-5099
DOI: 10.29173/bluejay4237