نتایج جستجو برای: deserts

تعداد نتایج: 2047  

Journal: :Nature 2008

Journal: :Frontiers of Biogeography 2017

Journal: :The Journal of Island and Coastal Archaeology 2017

Journal: :Holistic Nursing Practice 2021

2007
DOUGLAS A. KELT

Presencelabsence data for the small-mammal species at sites in seven deserts were analyzed for evidence of similarity in community structure. The deserts studied were located in North and South America (268 and 118 sites, respectively), Australia (245 sites), Israel (54 sites), and greater Eurasia (Thar, 15 sites; Turkestan, 36 sites; Gobi, 98 sites). Patterns observed in all deserts included: ...

2010
Robert Zeller Tom Lynch Gaile McGregor

This chapter surveys and assesses from an ecocentric perspective some representative literary portrayals of the Australian deserts. Generally, it contrasts works that portray the desert as an alien, hostile, and undifferentiated void with works that recognise and value the biological particularities of specific desert places. It explores the literature of three dominant cultural orientations to...

2010
Yoav Bashan Luz E. de-Bashan

The rapid expansion of deserts in recent decades as a result of human actions combined with climatic disasters has highlighted the necessity to understand biological processes in arid environments. Whereas physical processes and the biology of flora and fauna have been relatively well studied in marginally used arid areas, knowledge of desert soil micro-organisms remains fragmentary. This chapt...

2009
Julie Beaulac Elizabeth Kristjansson Steven Cummins

INTRODUCTION "Food deserts," areas characterized by poor access to healthy and affordable food, may contribute to social and spatial disparities in diet and diet-related health outcomes. However, the extent to which food deserts exist is debated. We review the evidence for the existence of food deserts in socioeconomically disadvantaged areas. METHODS We conducted a systematic review of prima...

2012
Jonathan A. Sherratt

Self-organised patterns of vegetation are a characteristic feature of many semi-arid regions. In particular, banded vegetation is typical on hillsides. Mathematical modelling is widely used to study these banded patterns, because there are no laboratory replicates. I will describe the development of spatial patterns in an established model for banded vegetation via a Turing bifurcation. I will ...

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