 The amount of food for each species of course gives the extreme limit to which each can increase ; but very frequently it is not the obtaining food, but the serving as prey to other animals, which determines the average numbers of a species.  Evolution and Adaptation - Стр. 113авторы: Thomas Hunt Morgan - 1903 - Страниц: 470Полный просмотр - Подробнее о книге
 | 1860 - Страниц: 982
...the extreme limit to which each species can increase ; but very frequently it is not the obtaining of food, but the serving as prey to other animals, which determines the average cumbers of a species." — p. 68. " Climate plays an important part in determining the average numbers... | |
 | Charles Darwin - 1861 - Страниц: 470
...(three feet by four) nine species perished from the other species being allowed to grow up freely. The amount of food for each species of course gives...partridges, grouse, and hares, on any large estate, depends chiefly on the destruction of vermin. If not one head of game were shot during the next twenty years... | |
 | Charles Darwin - 1864 - Страниц: 472
...(three feet by four) nine species perished from the other species being allowed to grow up freely. The amount of food for each species of course gives...partridges, grouse, and hares, on any large estate, depends chiefly on the destruction of vermin. If not one head of game were shot during the next twenty years... | |
 | Charles Darwin - 1870 - Страниц: 468
...(three feet by four) nine species perished from the other species being allowed to grow up freely. The amount of food for each species of course gives...other animals, which determines the average numbers of n species. Thus, there seems to belittle doubt that the stock of partridges, grouse, and liares, on... | |
 | Charles Darwin - 1873 - Страниц: 492
...(three feet by four) nine species perished, from the other species being allowed to grow up freely. The amount of food for each species of course gives the extreme Jimit to" which each can increase; "but very frequently it is not the obtaining food, but the serving... | |
 | Asa Gray - 1878 - Страниц: 416
...the extreme limit to which each species can increase ; but very frequently it is not the obtaining of food, but the serving as prey to other animals, which determines the average numbers of species."— (p. 68.) " Climate plays an important part in determining the average numbers of a species,... | |
 | Charles Darwin - 1882 - Страниц: 492
...(three feet by four) nine species perished, from the other species being allowed to grow up freely. The amount of food for each species of course gives the extreme limit to which each can increase ; hut very frequently it is not the obtaining food, but the serving as prey to other animals, which... | |
 | Charles Darwin - 1884 - Страниц: 396
...(three feet by four) nine species perished, from the other species being allowed to grow up freely. The amount of food for each species, of course, gives...prey to other animals, which determines the average number of a species. Thus, there seems to be little doubt that the stock of partridges, grouse, and... | |
 | 1886 - Страниц: 548
...(three feet by four) nine species perished from the other species being allowed to grow up freely. The amount of food for each species of course gives...partridges, grouse and hares on any large estate depends chiefly on the destruction of vermin. If not one head of game were shot during the next twenty years... | |
 | Henry Coppée - 1893 - Страниц: 560
...(three feet by four) nine species perished from the other species being allowed to grow up freely. The amount of food for each species of course gives...partridges, grouse and hares on any large estate depends chiefly on the destruction of vermin. If not one head of game were shot during the next twenty years... | |
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