Demography of Cirsium Vulgare in a Grazing Experiment

Autor:	J. M. Bullock, B. Clear Hill, J. Silvertown
Rok vydání:	1994
Předmět:	education.field_of_study Ecology Seed dispersal Population Geometry Plant Science Herbaceous plant food.food Cirsium vulgare Cultural control Plant ecology food Animal science Seed predation Grazing education Ecology Evolution Behavior and Systematics Mathematics
Zdroj:	The Journal of Ecology. 82:101
ISSN:	0022-0477
DOI:	10.2307/2261390
Popis:	The complete demographies of 16 populations of Cirsium vulgare were followed in a replicated experiment. The experiment was a factorial combination of two intensities of sheep grazing in each of three seasons - winter (grazed or ungrazed), spring (grazed or ungrazed), and summer (light or heavy grazing) - giving eight treatments in two blocks. For 6 years from 1987 to 1992 the population sizes of C. vulgare were monitored in each of the 16 paddocks. After 1989 grazing in spring or winter or increased grazing in summer all increased population sizes. Population sizes fluctuated widely between years. The effects of the grazing treatments and plant sizes on the transitions between nine life-history stages were determined (...)
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::6bffcfdcda34719fc3e48d1005af2eb3 https://doi.org/10.2307/2261390 Zobrazit plný text záznamu