期刊文献+
共找到2篇文章
< 1 >
每页显示 20 50 100
Three Great Reformers of the Roman Army
1
作者 Zihao Zhang(John) 《Journal of Contemporary Educational Research》 2018年第1期15-20,共6页
Rome was famous because of its strong military force and it dominate the Mediterranean Sea.However,it was facing severe shortage of soldiers for a long time during 150 BCE.This problem had enormously effect on the Rom... Rome was famous because of its strong military force and it dominate the Mediterranean Sea.However,it was facing severe shortage of soldiers for a long time during 150 BCE.This problem had enormously effect on the Roman society and political life such as the appearance of slavery in Rome and the use of violence in Rome.The reasons why Rome had shortage f soldiers were related to its own military system and political system.The three great reformers,Tiberius Gracchus,Caius Gracchus and Caius Marius tried their best to solve the problem.Gracchus brothers failed but Marius succeed.Experiences we can learn from these reforms will also be mentioned. 展开更多
关键词 ROMAN army SHORTAGE of SOLDIERS reform and REFORMER senate Gracchus BROTHERS Marius experiences
下载PDF
Habitat selection of woodchat shrikes Lanius senator during spring stopover is related to foraging strategy 被引量:1
2
作者 Danai PAPAGEORGIOU Christos BARBOUTIS +1 位作者 Christina KASSARA Sinos GIOKAS 《Current Zoology》 SCIE CAS CSCD 2017年第2期139-149,共11页
Every spring a huge number of passerines cross the Sahara Desert and the Mediterranean Sea on their way to their breeding grounds. Stopover sites after such extended barriers where birds can rest, refuel, and find she... Every spring a huge number of passerines cross the Sahara Desert and the Mediterranean Sea on their way to their breeding grounds. Stopover sites after such extended barriers where birds can rest, refuel, and find shelter from adverse weather, are of crucial importance for the outcome of their migration. Stopover habitat selection used by migrating birds depends on landscape context, habitat patch characteristics, as well as on the particular energetic conditions and needs of individ- ual birds, but it is still poorly investigated. We focused on a long-distance migrating passerine, the woodchat shrike, in order to investigate for the first time the species' habitat selection at a spring stopover site (island of Antikythira, Greece) after the crossing of the Sahara Desert and Mediterranean Sea. We implemented radio-tracking, color-ringing, and visual behavioral observa- tions to collect data on microhabitat use. Generalized Linear Mixed Models were developed to identify the species' most preferred microhabitat during its stopover on this low human disturbed island. We found that high maquis vegetation surrounded by low vegetation was chosen as perches for hunting. Moreover, high maquis vegetation appeared to facilitate hunting attempts toward the ground, the most frequently observed foraging strategy. Finally, we discuss our find- ings in the context of conservation practices for the woodchat shrike and their stopover sites on Mediterranean islands. 展开更多
关键词 habitat selection Mediterranean ecosystem RADIO-TRACKING stopover ecology woodchat shrike Lanius senator.
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部