Factors influencing the use of winter burnt grassland by foraging bald ibises geronticus calvus

Manry, D.E.

South African Journal of Zoology 19(1): 12-15

1984


DOI: 10.1080/02541858.1984.11447850
Accession: 005442562

Download citation:  
Text
  |  
BibTeX
  |  
RIS

Article/Abstract emailed within 0-6 h
Payments are secure & encrypted
Powered by Stripe
Powered by PayPal

Abstract
Use of winter-burnt grassland by foraging bald ibises, G. calvus, and the abundance of invertebrates in winter-burnt grassland were investigated in relation to the time elapsed after burning in Natal high grassland. Bald ibises were recorded feeding in dormant, winter-burnt grassland from < 4 h after burning up to 35 days after burning. Insects and other potential prey items were significnatly more abundant 0-7 days than 14-37 days after burning; most specimens consisted of fire-killed arthropods. Live insects increased in abundance soon after the appearance of new growth 46-82 days after burning. Possible factors influencing the use of winter-burnt grassland by foraging bald ibises are discussed with emphasis on changes in the relative abundance of living and dead arthropods in relation to the time elapsed after burning.