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introduction of exotic species 吉林省林木引种成就及今后发展设想 2) Tree introduction 树木引种 1. Current situation and development strategy on tree introduction in Jilin Province; 吉林省树木引种现状及发展策略 3) Tree seeds and seedlings 林木种苗 ...
exotic speciesinvasion pathwaywildlife tradeAimResearch on amphibian invasions has largely focused on the likelihood of successful establishment, while analysis of the previous stages in the invasion pathway (transport and introduction) is scarce despite its critical importance. Here, we investigate the ...
关键句:The introduction of exotic (外来的) species is another threat.改写:Introducing exotic species may threaten the native ones. 本题考查概要写作之同义改写。解题步骤:1. 确定关键词句。本段第一句总起,第二句话中的extinctions 是第一句话中threat的表现,属于重复,后文具体解释这种威胁是如何造成的,故...
open.Temporal variation in fish assemblages was analysed over an 18year period in 14 waterways of the lowland backwaters of the Po River in north-eastern Italy, which are important feeding, spawning and nursery sites for native fish.In 1991, 14 native and eight exotic species were collected. ...
The introduction of non-native "exotic" species is now seen as a major threat to biodiversity. In 1825, a particularly vigorous female clone of itadori (called Japanese knotweed)was introduced into Holland and later distributed throughout Europe by the plant collector and nurseryman, Von Seybold....
【题目】Non-NativeSpeciesT heintroduction of non-native "exotic" speciesis now seen as amajor threat to biodiversity.In 1825, a particularlyvigorous female clone of itadori (called Japanese knotweed) wasintroduced into Holland and later __11_throughout Europe by the plant collector and nurseryman...
Parasites of exotic species in invaded areas: does lower diversity mean lower epizootic impact? Aim Exotic species may serve as vectors for the introduction of parasites from their native range and may also become infected by parasites already present... SE Mastitsky,AY Karatayev,LE Burlakova,...
The introduction of non-native "exotic" species is now seen as a major threat to biopersity. In 1825, a particularly vigorous female clone of itadori (called Japanese knotweed) was introduced into Holland and later distributed throughout Europe by the plant collector and nurseryman, Von Seybold...
Discuss two areas where the introduction of a non-native organism has created problems for the ecosystem. What was the organism, why was it introduced, and what effects has it had? Why might the introduction of exotic species disr...