geo coservation Chapter6

geo coservation Chapter6 - CHAPTER 6 ENVIRONMENTAL...

Info iconThis preview shows pages 1–15. Sign up to view the full content.

View Full Document Right Arrow Icon
CHAPTER 6 ENVIRONMENTAL CONSERVATION BIOLOGY 104 SPRING 2008
Background image of page 1

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

View Full DocumentRight Arrow Icon
CASE STUDY 6—GOUALOUGO Northern republic of Congo Holds ¼ worlds tropical forests Home to many important African wildlife Elephants, gorillas, chimps, bongo, buffalo, leopards, 6 sp. sm. antelope, 8 sp. monkeys
Background image of page 2
GOUALOUGO, CONGO Region has densest assemblage of wildlife and richest collection of primates Area shows no signs of human intrusion Bordered by 2 rivers and dense flooded forests In natural pristine state Usually animals avoid humans (experience), here they show curiosity and follow
Background image of page 3

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

View Full DocumentRight Arrow Icon
GOUALOUGO, CONGO All land in N. Congo divided into logging concessions Area cut in 2 by loggers with ½ zoned for cutting Gov’t upgraded to national Park in 1993 2002 Gov’t, logging co. and wildlife conservationists added 26,000 ha to park
Background image of page 4
GOUALOUGO, CONGO This was the first recorded instance of a logging company giving up rights Lost over $10 mil. Land use policies central to environmental quality In order to preserve gov’t, corp., citizen organ., & ind. must work together
Background image of page 5

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

View Full DocumentRight Arrow Icon
Almost 60% of global land cover Provides essential resources Lumber, paper, pulp, grazing lands Ecologically important Regulates climate, controls water runoff, wildlife Heavily disturbed
Background image of page 6
WORLD ECOSYSTEMS Most abundant Widely distributed Most remain in humid tropics and taiga
Background image of page 7

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

View Full DocumentRight Arrow Icon
FORESTS Anywhere trees cover more then 10% of land Close canopy forests—tree crowns cover majority of ground Largest—Amazon Highest loss—West Africa and S. Amer.
Background image of page 8
FORESTS (Cont.) Huge carbon sink ≈ 422 billion tons of biomass Reduction of forests releases excess carbon and reduces precipitation High biodiversity Lg # of endangered sp. Few indigenous humans
Background image of page 9

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

View Full DocumentRight Arrow Icon
FORESTS (Cont.) Old growth forests— undisturbed, trees live out natural lives 25% of remaining forests have old growth Russia, Canada, Brazil, Indonesia & Papau, New Guinea which have 75% of old growth Remoteness protects
Background image of page 10
FORESTS (Cont.) Products from forests include fuel, paper and lumber Total annual wood consumption –4 bill m 3 accountinf for $100 bill/yr Developed countries produce < 50% and consume > 80%
Background image of page 11

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

View Full DocumentRight Arrow Icon
FORESTS (Cont.) Paper pulp—20% wood consumption Fuel wood—50% 25% worlds forests are managed for production called monoculture forestry Plantation of single sp for a single use with intense cropping
Background image of page 12
DEFORESTATION 100 ya 12.5 mil km 3 of tropical forests Now 9.2 mill ha .06% cleared yearly 3 mill ha in Amazon basin alone
Background image of page 13

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

View Full DocumentRight Arrow Icon
DEFORESTATION What is deforestation— different def’n abound Scientists—complete change from forest to agriculture, urban area or desert Others—any area being logged Means estimates vary from 5- 20 mill ha/yr lost Most widely accepted rate is 12.5 mill ha with lgst amount from Brazil
Background image of page 14
Image of page 15
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 04/17/2008 for the course GEOS 120 taught by Professor Meyers during the Spring '05 term at Winona.

Page1 / 53

geo coservation Chapter6 - CHAPTER 6 ENVIRONMENTAL...

This preview shows document pages 1 - 15. Sign up to view the full document.

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