Ch 56 Hawaiis Biodiversity

Ch 56 Hawaiis Biodiversity - Lecture 56 Hawaiis...

Info iconThis preview shows pages 1–20. Sign up to view the full content.

View Full Document Right Arrow Icon
Lecture 56 Hawaii’s Biodiversity
Background image of page 1

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

View Full DocumentRight Arrow Icon
Environmental Diversity Extremely wide range of habitats temperature moisture soils vegetation
Background image of page 2
Environmental Diversity trades inversion
Background image of page 3

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

View Full DocumentRight Arrow Icon
Background image of page 4
Background image of page 5

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

View Full DocumentRight Arrow Icon
Background image of page 6
Facts: 2,500 miles of ocean separate North America from the Hawaiian Islands. 3,500 miles of ocean between the small Marianas Islands and the Hawaiian chain. The Hawaiian chain has never been connected to a land mass.
Background image of page 7

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

View Full DocumentRight Arrow Icon
How then, did plants and animals cross the large oceanic distance to arrive on the Hawaiian islands? Transportation through the air Attached to Birds Fruits eaten by Birds Drifting in Seawater
Background image of page 8
Hawaii’s Flowering Plants Long Distance Dispersal The original colonist plants arrives in the following ways: water 23% wind 2% birds 75%
Background image of page 9

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

View Full DocumentRight Arrow Icon
14.3% of native flowering plants adapted to oceanic drift. Adaptations for dispersal in seawater: Seeds or fruits capable of floating. Seeds or plant parts must be able to resist seawater for weeks. Must arrive alive on beach and be able to grow there. Pandanus tectorius
Background image of page 10
Includes plants that reproduce by means of spores such as ferns, mosses, algae, and lichen Spore size : Spores so small that a line of a thousand of them end-to-end would be an inch long. Fern spores would be more successful at reaching Hawaiian island then seeds of flowering plants. Adenophorus periens
Background image of page 11

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

View Full DocumentRight Arrow Icon
1.4% of the 255 hypothetical original flowering plants were dispersed by air flotation Ohia lehua tree has seeds small enough to suggest dispersal through the air. 1 st to appear after a lava flow Metrosideros polymorpha
Background image of page 12
Insects. Passive flight and small body size of insects accounts for their dispersal to the island. Yellow-faced bee Nesoprosopis pollinates
Background image of page 13

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

View Full DocumentRight Arrow Icon
Embedded in mud on feet or other parts of birds Sticky substances Mechanical devices (barbs, hooks, bristles) Pacific golden plover
Background image of page 14
Most effective means of seed dispersal to the Hawaiian Islands. Accounts for dispersal of an estimated 39% of the 255 hypothetical original plants. Tetraplasandra flynii Has hairy gray fruits
Background image of page 15

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

View Full DocumentRight Arrow Icon
migration migration Flowering Plant Dispersal by Birds
Background image of page 16
Birds Travel through active flight such as migratory birds, marine birds, shore birds and waterfowl. Land birds underrepresented. Insects Passive flight and small size Storms Air currents Migration
Background image of page 17

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

View Full DocumentRight Arrow Icon
Fish Freshwater fish, gobie family (diadromous or amphidromous)) Drift as larvae (long-lasting stage) Marine inverts Drift as larva Ocean currents and gyre Most from Northwest Pacific Islands act as stepping stones
Background image of page 18
Amphidromous- migrate to and from the sea but do not use the ocean for reproduction
Background image of page 19

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

View Full DocumentRight Arrow Icon
Image of page 20
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 04/20/2011 for the course BIOL 172 taught by Professor Huddleston,m during the Spring '08 term at University of Hawaii, Manoa.

Page1 / 99

Ch 56 Hawaiis Biodiversity - Lecture 56 Hawaiis...

This preview shows document pages 1 - 20. Sign up to view the full document.

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