Search Results - "LEHMANN, E"
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Savanna woody encroachment is widespread across three continents
Published in Global change biology (01-01-2017)“…Tropical savannas are a globally extensive biome prone to rapid vegetation change in response to changing environmental conditions. Via a meta‐analysis, we…”
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Defining pyromes and global syndromes of fire regimes
Published in Proceedings of the National Academy of Sciences - PNAS (16-04-2013)“…Fire is a ubiquitous component of the Earth system that is poorly understood. To date, a global-scale understanding of fire is largely limited to the annual…”
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3
The knowledge spillover theory of entrepreneurship
Published in Small business economics (01-12-2013)“…According to the knowledge spillover theory of entrepreneurship, the context in which decision-making is derived can influence one's determination to become an…”
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The organizational architecture of entrepreneurial universities across the stages of entrepreneurship: a conceptual framework
Published in Small business economics (01-06-2022)“…Entrepreneurial universities contribute directly and indirectly to supporting all stages of entrepreneurship. The challenge for entrepreneurial universities is…”
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5
Effects of asphaltenes and organic acids on crude oil-brine interfacial visco-elasticity and oil recovery in low-salinity waterflooding
Published in Fuel (Guildford) (01-12-2016)“…Smart-water flooding has become increasingly more important as Enhanced-Oil Recovery technology in recent years. However, the observed incremental recovery…”
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6
Higher education policy: Why hope for quality when rewarding quantity?
Published in Research policy (01-10-2020)“…•The Excellence Initiative is a policy intervention aimed at increasing the international visibility of German university system by incentivizing word-class…”
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7
Exploiting passive nanomedicine accumulation at sites of enhanced vascular permeability for non-cancerous applications
Published in Journal of controlled release (10-09-2017)“…Over the past few decades, enhanced permeability of tumor vasculature was actively exploited for targeted delivery of anticancer nanomedicines resulting in…”
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Tropical grassy biomes: misunderstood, neglected, and under threat
Published in Trends in ecology & evolution (Amsterdam) (01-04-2014)“…•Tropical grassy biomes are extensive and critical to human livelihoods.•The definition of these grassy systems is inconsistent and misleading.•We discuss…”
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Woody plant encroachment intensifies under climate change across tundra and savanna biomes
Published in Global ecology and biogeography (01-05-2020)“…Aim Biomes worldwide are shifting with global change. Biomes whose extents are limited by temperature or precipitation, such as the tundra and savanna, may be…”
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Human impacts in African savannas are mediated by plant functional traits
Published in The New phytologist (01-10-2018)“…Tropical savannas have a ground cover dominated by C4 grasses, with fire and herbivory constraining woody cover below a rainfall-based potential. The savanna…”
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Determinants of flammability in savanna grass species
Published in The Journal of ecology (01-01-2016)“…Tropical grasses fuel the majority of fires on Earth. In fire‐prone landscapes, enhanced flammability may be adaptive for grasses via the maintenance of an…”
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12
Focus on changing fire regimes: interactions with climate, ecosystems, and society
Published in Environmental research letters (01-03-2020)“…Fire is a complex Earth system phenomenon that fundamentally affects vegetation distributions, biogeochemical cycling, climate, and human society across most…”
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13
Generalizations of the Familywise Error Rate
Published in The Annals of statistics (01-06-2005)“…Consider the problem of simultaneously testing null hypotheses H1,..., Hs. The usual approach to dealing with the multiplicity problem is to restrict attention…”
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When is a 'forest' a savanna, and why does it matter?
Published in Global ecology and biogeography (01-09-2011)“…Savannas are defined based on vegetation structure, the central concept being a discontinuous tree cover in a continuous grass understorey. However, at the…”
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Pre-rain green-up is ubiquitous across southern tropical Africa: implications for temporal niche separation and model representation
Published in The New phytologist (01-01-2017)“…Tree phenology mediates land–atmosphere mass and energy exchange and is a determinant of ecosystem structure and function. In the dry tropics, including…”
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16
Systematic review of outcomes following observational and operative endoscopic middle ear surgery
Published in The Laryngoscope (01-05-2015)“…Objectives Middle ear surgery increasingly employs endoscopes as an adjunct to or replacement for the operative microscope. We provide a systematic review of…”
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Deciphering the distribution of the savanna biome
Published in The New phytologist (01-07-2011)“…We aimed to identify the limits of savanna across Africa, Australia and South America. We based our investigation on the rich history of hypotheses previously…”
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18
Savanna Vegetation-Fire-Climate Relationships Differ Among Continents
Published in Science (American Association for the Advancement of Science) (31-01-2014)“…Ecologists have long sought to understand the factors controlling the structure of savanna vegetation. Using data from 2154 sites in savannas across Africa,…”
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Chasing quantitative biases in neutron imaging with scintillator-camera detectors: a practical method with black body grids
Published in Optics express (11-06-2018)“…We propose a method for improving the quantification of neutron imaging measurements with scintillator-camera based detectors by correcting for systematic…”
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The dynamics of entrepreneurial ecosystems: an empirical investigation
Published in R & D management (01-09-2023)“…The purpose of this paper is to examine the longitudinal dynamics within entrepreneurial ecosystems. We empirically test how entrepreneurial activities affect…”
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