考研英语阅读篇章母狼的死亡威胁种群生存
<p> 篇章：母狼的死亡威胁种群生存</p><p> <span word="When">When</span> <span word="a">a</span> <span word="breeding">breeding</span> <span word="wolf">wolf</span> <span word="dies">dies</span>, <span word="its">its</span> <span word="sex">sex</span> <span word="and">and</span> <span word="the">the</span> <span word="size">size</span> <span word="of">of</span> <span word="its">its</span> <span word="pack">pack</span> <span word="can">can</span> <span word="determine">determine</span> <span word="whether">whether</span> <span word="that">that</span> <span word="pack">pack</span> <span word="continues">continues</span>, <span word="according">according</span> <span word="to">to</span> <span word="research">research</span> <span word="published">published</span> <span word="July">July</span> <span word="online">online</span> <span word="by">by</span> <span word="the">the</span> <span word="Journal">Journal</span> <span word="of">of</span> <span word="Animal">Animal</span> <span word="Ecology">Ecology</span>. <span word="In">In</span> 2012, <span word="biologists">biologists</span> <span word="at">at</span> <span word="Denali">Denali</span> <span word="National">National</span> <span word="Park">Park</span> <span word="and">and</span> <span word="Preserve">Preserve</span> <span word="noted">noted</span> <span word="a">a</span> <span word="drop">drop</span> <span word="in">in</span> <span word="wolf">wolf</span> <span word="sightings">sightings</span> <span word="following">following</span> <span word="the">the</span> <span word="death">death</span> <span word="of">of</span> <span word="a">a</span> <span word="breeding">breeding</span> <span word="female">female</span> <span word="from">from</span> <span word="a">a</span> <span word="pack">pack</span> <span word="that">that</span> <span word="lived">lived</span> <span word="along">along</span> <span word="the">the</span> <span word="Denali">Denali</span> <span word="Park">Park</span> <span word="Road">Road</span>. <span word="This">This</span> <span word="was">was</span> <span word="one">one</span> <span word="of">of</span> <span word="several">several</span> <span word="instances">instances</span> <span word="where">where</span> <span word="the">the</span> <span word="death">death</span> <span word="of">of</span> <span word="an">an</span> <span word="individual">individual</span> <span word="wolf">wolf</span> <span word="from">from</span> <span word="legal">legal</span> <span word="trapping">trapping</span> <span word="or">or</span> <span word="hunting">hunting</span> <span word="sparked">sparked</span> <span word="widespread">widespread</span> <span word="attention">attention</span> <span word="in">in</span> <span word="recent">recent</span> <span word="years">years</span>.</p><p> <span word="This">This</span> <span word="isn">isn</span> <span word="t">t</span> <span word="the">the</span> <span word="first">first</span> <span word="time">time</span> <span word="we">we</span> <span word="have">have</span> <span word="noticed">noticed</span> <span word="that">that</span> <span word="the">the</span> <span word="loss">loss</span> <span word="of">of</span> <span word="a">a</span> <span word="breeding">breeding</span> <span word="wolf">wolf</span> <span word="can">can</span> <span word="affect">affect</span> <span word="the">the</span> <span word="fate">fate</span> <span word="of">of</span> <span word="the">the</span> <span word="pack">pack</span>. <span word="We">We</span> <span word="thought">thought</span> <span word="it">it</span> <span word="would">would</span> <span word="be">be</span> <span word="valuable">valuable</span> <span word="to">to</span> <span word="systematically">systematically</span> <span word="look">look</span> <span word="at">at</span> <span word="what">what</span> <span word="happens">happens</span> <span word="to">to</span> <span word="the">the</span> <span word="pack">pack</span> <span word="and">and</span> <span word="population">population</span> <span word="following">following</span> <span word="the">the</span> <span word="death">death</span> <span word="of">of</span> <span word="a">a</span> <span word="breeder">breeder</span>, <span word="said">said</span> <span word="author">author</span> <span word="Bridget">Bridget</span> <span word="Borg">Borg</span>, <span word="a">a</span> <span word="University">University</span> <span word="of">of</span> <span word="Alaska">Alaska</span> <span word="Fairbanks">Fairbanks</span> <span word="biology">biology</span> <span word="graduate">graduate</span> <span word="student">student</span> <span word="and">and</span> <span word="National">National</span> <span word="Park">Park</span> <span word="Service">Service</span> <span word="biologist">biologist</span>.</p><p> <span word="Borg">Borg</span> <span word="s">s</span> <span word="research">research</span> <span word="looked">looked</span> <span word="at">at</span> <span word="changes">changes</span> <span word="in">in</span> <span word="wolf">wolf</span> <span word="pack">pack</span> <span word="fate">fate</span>, <span word="reproduction">reproduction</span> <span word="and">and</span> <span word="population">population</span> <span word="growth">growth</span> <span word="following">following</span> <span word="the">the</span> <span word="death">death</span> <span word="of">of</span> <span word="breeders">breeders</span>.</p><p> <span word="Given">Given</span> <span word="the">the</span> <span word="park">park</span> <span word="s">s</span> <span word="current">current</span> <span word="low">low</span> <span word="wolf">wolf</span> <span word="densities">densities</span> <span word="and">and</span> <span word="small">small</span> <span word="average">average</span> <span word="pack">pack</span> <span word="sizes">sizes</span>, <span word="we">we</span> <span word="are">are</span> <span word="concerned">concerned</span> <span word="about">about</span> <span word="harvest">harvest</span> <span word="of">of</span> <span word="wolves">wolves</span> <span word="from">from</span> <span word="packs">packs</span> <span word="that">that</span> <span word="reside">reside</span> <span word="primarily">primarily</span> <span word="within">within</span> <span word="the">the</span> <span word="park">park</span>, <span word="said">said</span> <span word="Don">Don</span> <span word="Striker">Striker</span>, <span word="Superintendent">Superintendent</span> <span word="of">of</span> <span word="Denali">Denali</span> <span word="National">National</span> <span word="Park">Park</span> <span word="and">and</span> <span word="Preserve">Preserve</span>. <span word="The">The</span> <span word="death">death</span> <span word="of">of</span> <span word="a">a</span> <span word="breeding">breeding</span> <span word="wolf">wolf</span> <span word="could">could</span> <span word="harm">harm</span> <span word="the">the</span> <span word="packs">packs</span> <span word="that">that</span> <span word="provide">provide</span> <span word="the">the</span> <span word="greatest">greatest</span> <span word="opportunities">opportunities</span> <span word="for">for</span> <span word="park">park</span> <span word="visitors">visitors</span> <span word="to">to</span> <span word="see">see</span> <span word="a">a</span> <span word="wolf">wolf</span> <span word="in">in</span> <span word="the">the</span> <span word="wild">wild</span>, <span word="either">either</span> <span word="through">through</span> <span word="a">a</span> <span word="lack">lack</span> <span word="of">of</span> <span word="reproduction">reproduction</span> <span word="or">or</span> <span word="the">the</span> <span word="loss">loss</span> <span word="of">of</span> <span word="the">the</span> <span word="entire">entire</span> <span word="pack">pack</span>.</p>
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