Lec 19 Bild 3 2011 Invasive rats on Islands

Lec 19 Bild 3 2011 Invasive rats on Islands - Trophic...

Info iconThis preview shows pages 1–21. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Trophic impacts of invasive animals Lecture 19: Conservation Biology Special Topic Outline 1. Trophic interactions shape communities 2. Invasive animals impact trophic interactions 3. Determining mechanisms: modeling animal foraging Trophic interactions shape community structure Trophic interactions shape community structure Paine (1966) Am. Nat. Hairston et al. (1960) Am. Nat. Hairston et al. (1960) Am. Nat. Trophic Cascades Trophic interactions shape community structure Estes and Duggins (1995) Ecol. Mono. Invasive animals alter trophic interactions Invasive animals prevalent on islands Experimental opportunities- Endemic species- Critical habitat Invasive animals prevalent on islands Conservation opportunities Invasive animals prevalent on islands Conservation opportunities Endangered species 45% on islands International Union for Conservation of Nature (IUCN) Invasive animals prevalent on islands Conservation opportunities 64% of modern extinctions on islands International Union for Conservation of Nature (IUCN) Invasive animals prevalent on islands Conservation opportunities Islands are only 3% of earth How to study trophic impacts of invasive animals? Invader Native Species Direct trophic effects of invasive animals Direct effects of invasive animals on islands Galbreath & Brown 2004 Direct effects of invasive animals on islands Rodda et al. 1997 17 of 22 native bird species Indirect trophic effects of invasive animals? ? ? Trophic cascades? Invasive carnivore Herbivores Plants Do island invaders cause trophic cascades? Do invaders cause trophic cascades?...
View Full Document

This note was uploaded on 01/16/2012 for the course BILD 3 taught by Professor Wills during the Fall '07 term at UCSD.

Page1 / 71

Lec 19 Bild 3 2011 Invasive rats on Islands - Trophic...

This preview shows document pages 1 - 21. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online