Abundance and diversity of herbaceous weeds in sheep/beef pastures, South Island, New Zealand

Autor:	R Hill, Grant Blackwell, M. Emanuelsson, J Manhire, Henrik Moller, D Lucock
Rok vydání:	2011
Předmět:	biology Ecology Soil Science Species diversity Plant Science Bellis perennis biology.organism_classification Diversity index Taraxacum officinale Agronomy Abundance (ecology) Animal Science and Zoology Species richness Cirsium arvense Weed Agronomy and Crop Science
Zdroj:	New Zealand Journal of Agricultural Research. 54:53-69
ISSN:	1175-8775 0028-8233
Popis:	This study compared species diversity, abundance and size of broad-leaved herbaceous weeds on 28 South Island sheep/beef farms that employed either organic, integrated management (IM) or conventional management (CM) systems. Three or six paddocks per farm were surveyed using walked transects in November 2005, and the presence and number of individuals of each weed species encountered were recorded. 39 broad-leaved herbaceous weeds were recorded on all the farms in the study, but 76.7% of occurrences were of just three species (Californian thistle (Cirsium arvense L.), dandelion (Taraxacum officinale) Weber and daisy (Bellis perennis L.)). The ten next most abundant species made up 21% of records and the remaining 26 species just 1.9%. Very few significant differences were found in the geographic distribution, species richness or Shannon diversity index, abundance, cover or size of broad-leaved herbaceous weeds present on farms employing the different management techniques. However, there were sig...
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::f9994595f7a4a07ac5bbc1065e9374ec https://doi.org/10.1080/00288233.2010.535493 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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