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7 janvier 2021 14:14

7 janvier 2021 14:14

Biodiversity—the term that refers to the variety of forms of life found in a particular location and which ranges in complexity from genes to at least phyla according to the location being considered (a study plot, region or the globe, for instance)—is commonly measured as the number of species in the area being considered, and is of intrinsic concern because of human impacts expressed as loss of species (Huston et al. 2003). The major role agriculture plays in biodiversity decline worldwide has been well documented (Millennium Ecosystem Assessment 2005). In New Zealand (barely m entioned in the millennium assessment) there is indisputable evidence that humans have reduced the acreage of native vegetation (to approximately 23% of its former area; mountainous areas are relatively preserved but there is little 1The Forum section contains short opinion articles on topics within the scope of the New Zealand Journal of Agricultural Research. Forum articles are not refereed, and editing is limited to style matters. They should be no more than the equivalent of 2500 words including references. Articles commenting on a specific paper will be referred to the author(s) of that paper for right of reply before publication. Forum articles should not be cited as scientific papers. A08059; Online publication date 30 October 2008 Received 7 October 2008 indigenous vegetation remaining in lowland and foothill areas), and have introduced species, sometimes inadvertently, which have naturalised. The combination has resulted in the extinction of native species which now have iconic status, such as the moa, as well as 32% of indigenous land and freshwater birds, 18% of endemic seabirds, three of seven species of frogs and at least 12 invertebrates such as snails and insects (Anon. 2006). Others, such as the kakapo and little spotted kiwi are under threat, as are approximately 1000 of New Zealand's known animal, plant and fungus species.

None

• AB - Utile à l'AB
• biodiversity
• conservation
• FREDO durabilité
• GEO Nouvelle-Zélande
• indicateurs
• intensification

New Zealand Journal of Agricultural Research

51

451-455

12/2008

1 décembre 2008

10.1080/00288230809510474 Le DOI est une URL unique de référencement d'une publication. Il est donc plus fiable et permanent qu'une URL classique

0028-8233, 1175-8775 L’ISSN est un code de 8 chiffres servant à identifier les journaux, revues, magazines, périodiques de toute nature et sur tous supports, papier comme électronique.