David Parsons

ORCID: 0000-0002-9121-7859
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About
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Research Areas
  • Fire effects on ecosystems
  • Rangeland and Wildlife Management
  • Ecology and Vegetation Dynamics Studies
  • Historical and Archaeological Studies
  • Recreation, Leisure, Wilderness Management
  • Diverse Historical and Scientific Studies
  • Historical and Religious Studies of Rome
  • Medieval Literature and History
  • Botany, Ecology, and Taxonomy Studies
  • Archaeology and Natural History
  • Animal Behavior and Welfare Studies
  • Simulation Techniques and Applications
  • Archaeology and ancient environmental studies
  • Linguistics and language evolution
  • Economic and Environmental Valuation
  • Meat and Animal Product Quality
  • Medieval European History and Architecture
  • Urban Green Space and Health
  • American Environmental and Regional History
  • History of Science and Medicine
  • Urban Transport and Accessibility
  • Effects of Environmental Stressors on Livestock
  • Animal Nutrition and Physiology
  • Species Distribution and Climate Change
  • Agriculture Sustainability and Environmental Impact

Cranfield University
2010-2023

University of Wales
2022

National Park Service
1979-2020

Michigan State University
2020

University of California, Berkeley
2002-2020

Parsons (United States)
2020

Berkeley College
2020

University of Salford
2018

Massey University
2011-2015

Laboratoire d'Informatique en Images et Systèmes d'Information
2011

Ecosystem management is driven by explicit goals, executed policies, protocols, and practices, made adaptable monitoring research based on our best understanding of the ecological interactions processes necessary to sustain ecosystem composition, structure, function. In recent years, sustainability has become an explicitly stated, even legislatively mandated, goal natural resource agencies. practice, however, approaches have often focused maximizing short‐term yield economic gain rather than...

10.2307/2269460 article EN Ecological Applications 1996-08-01

10.1016/0378-1127(79)90034-3 article EN Forest Ecology and Management 1979-01-01

Evolution provides a creative fount of complex and subtle adaptations that often surprise the scientists who discover them. However, creativity evolution is not limited to natural world: Artificial organisms evolving in computational environments have also elicited wonder from researchers studying The process an algorithmic transcends substrate which it occurs. Indeed, many field digital can provide examples how their algorithms creatively subverted expectations or intentions, exposed...

10.1162/artl_a_00319 article EN cc-by Artificial Life 2020-04-09

Drought has wide ranging impacts on all sectors. Despite much effort to identify the best drought indicator represents occurrence of in a particular sector, there is still no consensus among scientific community this. Using more detailed and extensive impact dataset than previous studies, this paper assesses regional relationship between British agriculture two most commonly used indices (SPI SPEI). The largest qualitative reported for period 1975–2012 spanning major recent droughts was...

10.1016/j.agsy.2019.02.015 article EN cc-by Agricultural Systems 2019-02-26

One successful approach towards refining the form-environment interaction in natural communities has been to examine extent of convergence structural and functional attributes phylogenetically distinct biotas climatically similar areas. This used tropical areas (Richards 1952; Sarmiento 1972), semideserts (Riley & Young 1966) Mediterranean climate (Naveh 1967; Specht 1969). The latter have long cited as examples evolutionary (Grisebach 1872). Characterized by hot dry summers cool moist...

10.2307/2258767 article EN Journal of Ecology 1976-07-01

The reliability of the water distribution system is critical to maintaining a secure supply for population, industry and agriculture, so there need proactive maintenance help reduce loss down times. Bayesian networks are one approach modelling complexity mains, assist utility companies in planning maintenance. This paper compares analyses how accurately network structure can be derived given large highly variable dataset. Method involved using automated learning algorithms build network,...

10.1016/j.ress.2019.02.001 article EN cc-by Reliability Engineering & System Safety 2019-02-06

Adenostoma fasciculatum H. & A. and Ceanothus leucodermis Green in chaparral stands of the foothill zone Sequoia National Park, California, show a rapid decline foliage concentrations nitrogen over first six years following fire. This is followed by more gradual succeeding years. Phosphorus similar early decline, an increase older age stands. Considerable data suggest luxury consumption nutrients both species Following sharp aboveground per unit canopy area for 16 growth, plateau...

10.1002/j.1537-2197.1980.tb07623.x article EN American Journal of Botany 1980-01-01

Chamise (Adenostoma fascicuhztum) undergoes major structural changes in above-ground biomass along a gradient of increasing stand age since fire.Shrub growth volume and is rapid through 16 years but levels off older stands.In this early phase linear increase, net productivity has mean 430 g.yr-l for each shrub, or 60 g-m-* yr-l over the period 2 -16 age.Individual shrubs at 37 Sequoia southern Sierra Nevada have more than twice four times annual chamise similar San Gabriel Mountains Los...

10.2307/3898560 article EN Journal of Range Management 1979-11-01

Regulations based on the precautionary principle should undertake a comprehensive assessment of all available scientific and technical data to identify sources epistemic uncertainty. In European Union (EU), environmental regulation is required fulfill principles established in Article 174 EU Treaty, such that it offers high level protection consistent with principle. Pesticides drinking water are currently regulated by Drinking Water Directive using maximum allowable concentration 0.1 μg/L....

10.1021/es304955g article EN Environmental Science & Technology 2013-04-16

The precautionary principle was formulated to provide a basis for political action protect the environment from potentially severe or irreversible harm in circumstances of scientific uncertainty that prevent full risk cost‐benefit analysis. It underpins environmental law European Union and has been extended include public health consumer safety. aim this study examine how interpreted subsequently applied practice, whether these applications were consistent, they followed guidance Commission....

10.1111/risa.12633 article EN cc-by Risk Analysis 2016-05-18

An algorithm is described for planning the motions of several mobile robots which share same workspace. Each robot capable independent translational motion in two dimensions, and workspace contains polygonal obstacles. The computes a path each avoids all obstacles as well other robots. It guaranteed to find solution if one exists. takes cell decomposition approach, where used based on idea product operation defined cells two-dimensional free space. This being implemented case part ongoing...

10.1109/robot.1990.125937 article EN 2002-12-04

Tree mortality is often the result of both long-term and short-term stress. Growth rate, an indicator stress, used to estimate probability death in unburned stands. In contrast, burned stands modeled as a function disturbance severity. We sought narrow this conceptual gap by determining (i) whether growth addition crown scorch, predictor (ii) single, simple model could predict tree Observations 2622 688 Abies concolor (Gord. & Glend.) Lindl. (white fir) Sierra Nevada California, U.S.A.,...

10.1139/x03-019 article EN Canadian Journal of Forest Research 2003-05-30

Biological evolution provides a creative fount of complex and subtle adaptations, often surprising the scientists who discover them. However, because is an algorithmic process that transcends substrate in which it occurs, evolution's creativity not limited to nature. Indeed, many researchers field digital have observed their evolving algorithms organisms subverting intentions, exposing unrecognized bugs code, producing unexpected or exhibiting outcomes uncannily convergent with ones Such...

10.48550/arxiv.1803.03453 preprint EN other-oa arXiv (Cornell University) 2018-01-01

The relationship between nature and cultural ecosystem service (CES) benefits is well accepted but poorly understood, as the potential role of biodiversity in relationship. By means a public questionnaire survey Wiltshire, UK, presence range common species groups, group 'charisma', abundance landscape, benefit that people felt they derived from groups was investigated for lowland multifunctional landscape. Findings showed charisma influenced reported by respondents current levels, their...

10.1016/j.ecoser.2017.07.007 article EN cc-by Ecosystem Services 2017-08-01

The first detailed kinetic analysis and mechanistic interpretation of the reactions between serum albumin second-generation gold drug Auranofin [Et(3)PAuSATg = (triethylphosphine)(2,3,4,6-tetra-O-acetyl-1-beta-D-glucopyranosato-S-) gold(I)] its triisopropylphosphine analogue, iPr(3)PAuSATg, in vitro are reported. were investigated using Penefsky spun columns NMR saturation transfer methods. Under chromatography conditions with 0.4-0.6 mM a wide range Et(3)PAuSATg concentrations, reaction is...

10.1021/ic9414280 article EN Inorganic Chemistry 1996-01-01
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