Population models are often used to guide conservation management decisions. Sensitivity analysis of such models can be useful in setting research priorities, by highlighting those parameters that have the most influence on population growth rate. Much of the work on sensitivity analysis in this context has been for density-independent models. We present a sensitivity analysis of a density-depe...

Immigration is a recent phenomenon for Romania which remains net emigration country. The country slowly transforming from transit to destination becoming more attractive labour immigrants and study purposes. Considering the need evidence based policies, this paper provides an overview on dynamic of immigration in profile characteristics immigrant workers terms numbers, economic sectors occupati...

In choice bioassays, Rhopalosiphum padi L. nonviruliferous apterae preferentially locate near volatile organic compounds (VOCs) emitted from Barley yellow dwarf virus (BYDV)-infected wheat plants compared with VOCs from noninfected plants. However, the specific VOCs responsible for R. padi responses are unknown. It is unclear also if R. padi responses to BYDV-infected wheat are caused by arrest...

Restrictive immigration policies and the militarization of external border controls by the US and the EU have failed to significantly curb immigration from Latin America and Africa. Rather, they have led to increasing reliance on increasingly risky and costly irregular migration and have paradoxically encouraged permanent settlement. A commonly presented ‘smart solution’ to curb immigration is ...

Following a sharp increase in the number of border arrivals from violence-torn countries Guatemala, El Salvador, and Honduras spring summer 2014, United States quickly implemented strategy designed to prevent such surges by enhancing its detention deportation efforts. In this article, we examine emigration decision for citizens living high-crime contexts northern Central America. First, through...

The prevailing Eurocentric perspective on Mediterranean migration lies almost exclusively in the security paradigm, focusing upon African illegal migration to Europe and disregarding the role of migration in the socio-economic development of the African continent. The older emigration histories of North African countries are diverse, with Morocco, Tunisia and Algeria linked to France as a desti...