Decline of brown teal ( Anas chlorotis ) in Northland, New Zealand, 1988-99Submitted by osnz-admin on Tue, 03/15/2011 - 22:44
|Title||Decline of brown teal ( Anas chlorotis ) in Northland, New Zealand, 1988-99|
|Publication Type||Journal Article|
|Year of Publication||2001|
|Authors||Parrish, R, Williams, M|
|Type of Article||paper|
|Keywords||Anas chlorotis, brown teal, Northland: New Zealand, population, status|
Numbers of brown teal (Anas chlorotis) present at summer flock sites in Northland, New Zealand declined 65% during 1988-99 and the species' principal rangc contracted to three enclaves locatcd along 20 km of the eastern coast. Most populations underwent a period of pdual decline followed by an abrupt crash, symptomatic of prolonged recruitment failure. Drought-induced habitat and landscape change is proposed as an important agcnt of decline in two formerly large populations at Clendon Cove and Tutaernatai. Extirpation in Northland appears imminent.