首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
According to a study published this week in the journal Ecology Letters, the quantity of birds in Europe has declined by more th
According to a study published this week in the journal Ecology Letters, the quantity of birds in Europe has declined by more th
admin
2022-11-30
1
问题
According to a study published this week in the journal Ecology Letters, the quantity of birds in Europe has declined by more than 20 percent in the past 30 years. While there were over 2.1 billion European birds in 1980, there are now around 1.6 billion, says study co-author Rich Inger, an ecologist at the University of Exeter in the United Kingdom.
Most of the decline—or 90 percent—is accounted for by a shrinking population in the 36 most common species, Inger tells Newsweek. For example, throughout the continent there are now 62 percent fewer house sparrows (a common species also found in North America) than there were when Margaret Thatcher became prime minister, a decline of about 150 million animals, he says. There were also drops in the numbers of such common species as skylarks (云雀), grey partridges (灰色鹧鸪) and starlings (椋鸟).
The decline is likely due in part to habitat loss and pesticide use. The amount of land used for agriculture in Europe has greatly increased since 1980, and there are fewer places for birds to nest and find food, Inger says. At the same time, pesticide use has gone up, knocking down the number of "pests" like insects that birds prey upon, he adds. "We don’t manage the environment in a way that’s good for birds, " Inger says.
The study looked at an immense amount of data collected by thousands of "citizen scientists" over 30 years in most countries in Europe, in "an insightful departure from conventional approaches to reviewing bird monitoring data, " said Michael Wunder, an ornithologist (鸟类学家) at the University of Colorado-Denver who wasn’t involved in the study. Wunder says the study clearly shows that "population sizes are most strongly affected by land use patterns" like farming. The measures used to protect rare species, like restrictions on hunting in certain areas, are not enough to prevent a decline in common birds, he adds.
If we want to protect birds in general, we need to change farming practices to provide more non-crop-laden land for birds, Inger says. Reducing pesticides would also help, as research has shown that areas with high pesticide use have fewer birds. "What we can do is start more environmentally friendly farming, " Inger says. "We can leave wider margins on fields, get farmers to look after hedgerows (灌木篱墙), put up more bird boxes and provide places for birds to nest. "
All the following statements can be inferred from Paragraph Four EXCEPT that________.
选项
A、the study method was different from the conventional ones
B、an outsider of a research can give an objective comment on the finding
C、land use patterns have a great impact on the quantity of birds
D、the present bird protection measures are not very effective
答案
B
解析
转载请注明原文地址:https://kaotiyun.com/show/pDqD777K
0
专业英语四级
相关试题推荐
Withthedevelopmentofsociety,moreandmoreordinarypeopleareengagedincharityactivities.Accordingly,anewformofcha
HowtoBeEffectiveReaders?Whatisreading.amethodofabsorbing【T1】________—thedegreeofcomprehension
HowtoBeEffectiveReaders?Whatisreading.amethodofabsorbing【T1】________—thedegreeofcomprehension
AmericanFamiliesTypesofAmericanfamilies.thetraditionalAmericanfamily:aworkingfather,【T1】________,andtwo
SocialHistoryoftheEastEndofLondon1.1st—4thcenturiesProducewasusedto【T1】________thepeopleofLondon.2
(1)TheCanterburyTales,writtenbyGeoffreyChaucerinthelate14thCentury,tellsthestoryofagroupofmedievalpilgrims
Theexplosiononthesuncannotbeheard,there________noairbetweentheearth’satmosphereandthesun.
(1)Theearliestcontroversiesabouttherelationshipbetweenphotographyandartcenteredonwhetherphotograph’sfidelitytoa
SpeechforVisitorstotheMuseum1.Historyofthemuseum.Waterandavailabilityofrawmaterial—madethesitesuitab
SpeechforVisitorstotheMuseum1.Historyofthemuseum.Waterandavailabilityofrawmaterial—madethesitesuitab
随机试题
为境外窃取、刺探、收买、非法提供国家秘密、情报罪的服务对象是()
下列关于程序的表述,错误的是【】
患者,男,50岁。2个月前,因急性前壁心肌梗死入院,经行左前降支内药物支架植入后,住院7天出院。此后患者无任何症状,服用药物1个月后自行停用。2小时前在睡眠中再次发生剧烈胸痛,ECG证实为急性前壁再发心肌梗死。该患者本次再梗的最可能原因是
合并厌氧菌感染时需选用
粪便中发现虫卵,呈卵圆形,大小约0.06mm×0.04mm,卵壳薄,只一层,无盖。卵内常可见到4个卵细胞.具有此特点的虫卵是
氟喹诺酮类药物最适用于()。
甲公司与乙公司合同纠纷一案,双方约定由T仲裁委员会进行仲裁,齐某被乙公司选定为仲裁员。仲裁庭庭审后,应乙公司法律顾问陈某及委托代理人张律师之邀,齐某与他们见面并共进晚餐。席间,甲公司工作人员闯入录像,后在网上发布,舆论哗然。关于本案,下列说法正确的是(
运用公式“y=a+bx”编制弹性预算,字母x所代表的业务量可能有()。
根据文意,下列对“生物发光”的理解,正确的一项是()。根据原文提供的信息,下列推断正确的一项是()。
工程中有Form1、Form2两个窗体(Form1中有文本框Text1;Form2中有Text1文本框和Command1命令按钮)。Form1是启动窗体。在这些模块中编写下面的程序代码:Form1中的代码如下:PrivateSubT
最新回复
(
0
)