Southern Hemisphere Forests: Population Dynamics of Conifers and Angiosperms Coexistence, Slides of Geology

The history of ideas regarding the population dynamics of conifers and their coexistence with angiosperms in southern hemisphere forests. It discusses the role of three conifer families - araucariaceae, podocarpaceae, and cuppressaceae - and their relationship with angiosperms in various southern hemisphere forests, such as those in new zealand, patagonia, and tasmania. The document also examines the concept of 'relict' conifers and their regeneration challenges in humid areas.

Typology: Slides

2012/2013

Uploaded on 07/22/2013

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Southern Hemisphere forests
Main goal: Review history of ideas regarding
population dynamics of conifers and coexistence
with angiosperms southern forests.
Are southern hemisphere conifers relicts, slowly
dying out and being outcompeted by
angiosperms?
Docsity.com
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Southern Hemisphere forests

Main goal: Review history of ideas regarding

population dynamics of conifers and coexistence

with angiosperms southern forests.

Are southern hemisphere conifers relicts, slowly

dying out and being outcompeted by

angiosperms?

Southern Hemisphere forests

3 southern conifer families:

1. Araucariaceae (exclusively S)

2. Podocarpaceae (primarily S)

3. Cuppressaceae (mixed S & N)

Podocarp forest, New Zealand

Athrotaxis subalpine and mixed-eucalypt forest,

Tasmania

Angiosperms of Patagonia

Background

“Relict” conifers of New Zealand

(Wardle 1963)

  • Most sites lacked regeneration for hundreds of years
  • Regeneration failure most severe in drier sites  conifers restricted to humid “refugia”
  • Competition with angiosperms highest in humid areas  ecological window for conifers limited

Frequency