时间:2019-01-02 作者:英语课 分类:健康与环境


英语课

ENVIRONMENT REPORT - October 25, 2002: Chinook Salmon 1 Deaths


By Cynthia Kirk



This is the VOA Special English ENVIRONMENT REPORT.


American officials say at least twenty-thousand chinook salmon and other fish have died recently in the Klamath
River in Northern California. Scientists are not sure what caused the die-off. But environmental groups say the
Bush administration’s plan to redirect the flow of the river to provide water for crops may have caused water
levels to drop too low.


The Klamath River starts at Upper Klamath Lake in southern Oregon and flows into Northern California. Then
river flows west into the Pacific Ocean. Water management of the Klamath River has been a major dispute
between farmers on one side and fishermen, environmental groups and several Native American tribes on the
other side.


Six months ago, the Bush administration approved a plan to provide large amounts of water to farmers near the
Klamath River for irrigation. Farmers depend on water from the upper Klamath Lake to irrigate 2 more than
eighty-thousand hectares of land. Administration officials said the plan would satisfy farmers and honor
environmental laws. But opponents of the plan said it would severely 3 harm the river and its fish.


Several fishing groups and others have taken legal action against the federal government. They said the Bush
administration gave too much water to farmers for irrigation at the risk of thousands of salmon. Some of the
salmon, such as coho, are protected under the Endangered Species Act. However, chinook salmon do not have
federal protection. Chinook were the main victims of the recent fish kill.


Scientists disagree about what caused to the fish to die. Tests showed that most of the fish died of lack of oxygen
due to infections that damaged their gills. Scientists say the organisms that caused the infection are common in
the river. But rarely have the organisms led to so many deaths.


Some scientists say warm and dry weather last month and low water flows in the Klamath River could be major
reasons for the deaths. They say the river is too low for fish to move upstream to mate. They say the fish are
dying of disease because they are crowded into small areas of water.


Biologists have called for more water to be released into the river for at least six months. But so far, federal
officials have agreed only to two weeks of additional water flows.


This VOA Special English ENVIRONMENT REPORT was written by Cynthia Kirk.



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n.鲑,大马哈鱼,橙红色的
  • We saw a salmon jumping in the waterfall there.我们看见一条大马哈鱼在那边瀑布中跳跃。
  • Do you have any fresh salmon in at the moment?现在有新鲜大马哈鱼卖吗?
vt.灌溉,修水利,冲洗伤口,使潮湿
  • The farmer dug several trenches to irrigate the rice fields.这个农民挖了好几条沟以灌溉稻田。
  • They have built canals to irrigate the desert.他们建造成水渠以灌溉沙漠。
adv.严格地;严厉地;非常恶劣地
  • He was severely criticized and removed from his post.他受到了严厉的批评并且被撤了职。
  • He is severely put down for his careless work.他因工作上的粗心大意而受到了严厉的批评。
学英语单词
alectryomancers
alists
allelism
amount of insolation
analog control system
apsa(american political science association)
arteriae clitoridis
avrons
behavin
binary peritectic alloy system
blue-purpler
bottle soaker
bunker mentalities
calciol
callippus
cantors
centrifugal blower
cephalopelvic disproportion
cerebral vascular dementia
Ch'angsǒng-gun
chrome complex
Chromocor
combustibilities
corrosion borders(rims)
cut ... losses
dehydrocorydaline
dispower
dual isomorphism
earth mound
external economy
Fart Proposal
feron
fertility assay
first-in-last-out stack
fitted wardrobe
fitting out basin
gearbox dipstick
gene dose
good luck to sb
Gourock
ground state atom
haemitin
half-blues
heatsensitity
high-top-pressure capability
Hilol
hormone replacement therapy (hrt)
humanistic orientation
Irvinebank
kaufmans
Kolbe, Hermann
landing type vessel
liability for guarantee
light pipe
loading cycle
major semiaxis
makes a difference
Mastigamoeba
method of moving frames
MFH
MO,M.O.
morellet
multisymbols
myspace.com
nails down
natural rubber
non-woven fabrics
on the lookout
photochromicglass
Piwonice
plain sedimentation
plastic bags
polymeric modifier
possibility by area
prior alternate visit id
quiescent operating-point
rascon
receive frequency range
reduced modul
refutest
ridge of gutter
salt door
screw coupling
second-channel interference
Sergokala
shoal detector
Sinus anales
Spaak
square-law capacitor
stand between
Stipa regeliana
stir a finger
structure image
syncopist
the three R's
Thuidium
tidal scale
toe-curling
top-heading method
upright of a boring machine
washington-baltimore
wooden raceway work