نتایج جستجو برای: namely pollinator wasps is required emphatically

تعداد نتایج: 7346771  

Journal: :علوم و فنون زنبور عسل 0

abstract this chapter describes how the climate change is potentially the mostsevere threat to pollinator biodiversity. mounting evidence demonstrates that therehave already been biotic responses to the relatively small climate changes that haveoccurred this century. pollinators such as birds, bees, butterflies, moths, flies, wasps,beetles bats and even mosquitoes are essential for food product...

Journal: :Landscape Ecology 2021

Wild pollinators depend on floral resources available in the landscape, partly provided by mass flowering crops (MFCs), such as rapeseed or sunflower. MFCs are however often grown conventionally, implying insecticide use, with potential negative effects pollinators. To understand whether and to what extent these could contribute maintenance of pollinator populations, we investigated inter-annua...

پایان نامه :دانشگاه آزاد اسلامی واحد کرمانشاه - پژوهشکده زبان و گویش 1393

abstract the purpose of this study is twofold: on the one hand, it is intended to see what kind of noticing-the –gap activity (teacher generated vs. learner generated) is more efficient in teaching l2 grammar in classroom language learning. on the other hand, it is an attempt to determine which approach of the noticing-the-gap- activity is more effective in the long- term retention of grammar...

Journal: :Molecular Ecology 2021

How pollinators mediate microbiome assembly in the anthosphere is a major unresolved question of theoretical and applied importance face anthropogenic disturbance. We addressed this by linking visitation diverse pollinator functional groups (bees, wasps, flies, butterflies, beetles, true bugs other taxa) to key properties floral (microbial ?- ?-diversity microbial network) under agrochemical di...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشگاه پیام نور استان تهران - دانشکده ادبیات و علوم انسانی 1388

the purpose of this study was to investigate how english language teachers in mashhad who teach students in the pre-university cycle perceived the impact of the efltee on their teaching. the target population was nearly all pre-university english language teachers in seven districts of mashhad in the scholastic year 2008/2009. a survey questionnaire which consisted of (36) likert type items, wa...

2015
T Okamoto Y Okuyama R Goto M Tokoro M Kato

Floral scents are among the key signals used by pollinators to navigate to specific flowers. Thus, evolutionary changes in scents should have strong impacts on plant diversification, although scent-mediated plant speciation through pollinator shifts has rarely been demonstrated, despite being likely. To examine whether and how scent-mediated plant speciation may have occurred, we investigated t...

2009
Peter G. Kevan

Since agricultural activities were first recorded, there have been shortages of pollinators. Today it seems that pollination systems in many areas of agriculture are threatened by the inadequacy or lack of sustainable managed, indigenous, or imported pollinators. Pollinator shortages can adversely affect crop production and commodity markets. This paper presents an economic model than can be us...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه سمنان - دانشکده ادبیات و علوم انسانی 1389

?it is of utmost priority for an experienced teacher to train the mind of the students, and enable them to think critically and correctly. the most important question here is that how to develop such a crucial ability? this study examines a new way to the development of critical thinking utilizing critical discourse analytical tools. to attain this goal, two classes of senior english la...

2012
Sunni J. Taylor

Floral visitors of the homoploid hybrid speeies. Iris nelsonii (Abbeville Red Iris), were observed and identified in order to determine whether Abbeville Red Iris flowers are visited by similar floral visitors as its progenitor Iris speeies. The most common floral visitors to Abbeville Red Iris flowers v/exeArchilochus colubris (Ruby-throated Hummingbird), whieh were also largely successful in ...

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