Andrew R. Juhl

ORCID: 0000-0002-1575-3756
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About
Contact & Profiles
Research Areas
  • Marine and coastal ecosystems
  • Microbial Community Ecology and Physiology
  • Genetic Neurodegenerative Diseases
  • Marine Biology and Ecology Research
  • Methane Hydrates and Related Phenomena
  • Marine and coastal plant biology
  • Protist diversity and phylogeny
  • Marine Toxins and Detection Methods
  • Atmospheric and Environmental Gas Dynamics
  • Neurological disorders and treatments
  • Indoor Air Quality and Microbial Exposure
  • Fecal contamination and water quality
  • Isotope Analysis in Ecology
  • Water Treatment and Disinfection
  • Atmospheric chemistry and aerosols
  • Aquatic Ecosystems and Phytoplankton Dynamics
  • Mitochondrial Function and Pathology
  • Ocean Acidification Effects and Responses
  • Algal biology and biofuel production
  • Polar Research and Ecology
  • Marine and fisheries research
  • Urban Stormwater Management Solutions
  • Environmental DNA in Biodiversity Studies
  • BRCA gene mutations in cancer
  • Pharmaceutical and Antibiotic Environmental Impacts

Lamont-Doherty Earth Observatory
2014-2024

Columbia University
2014-2024

University of Iowa
2008-2013

University of Iowa Hospitals and Clinics
2012

University of Manchester
2012

Geriatric Research Education and Clinical Center
2012

VA New England Healthcare System
2012

Barnard College
2007

University of Dhaka
2007

Gulf Marine Institute of Technology
2003-2004

Current sampling of genomic sequence data from eukaryotes is relatively poor, biased, and inadequate to address important questions about their biology, evolution, ecology; this Community Page describes a resource 700 transcriptomes marine microbial help understand role in the world's oceans.

10.1371/journal.pbio.1001889 article EN cc-by PLoS Biology 2014-06-24

<h3>Objective</h3> As therapeutics are being developed to target the underlying neuropathology of Huntington disease, interest is increasing in methodologies for conducting clinical trials prodromal phase. This study was designed examine potential utility structural MRI measures as outcome such trials. <h3>Methods</h3> Data presented from 211 individuals and 60 controls, scanned both at baseline 2-year follow-up. Prodromal participants were divided into groups based on proximity estimated...

10.1136/jnnp.2010.208264 article EN Journal of Neurology Neurosurgery & Psychiatry 2010-09-30

Heterotrophic bacteria resistant to tetracycline and ampicillin were assessed in waterways of the New York City metropolitan area using culture-dependent approaches 16S rRNA gene sequence analysis resultant isolates. Resistant microbes detected at all 10 sampling sites monthly research cruises on lower Hudson River Estuary (HRE), with highest concentrations nearshore sites. Higher frequency was conducted Flushing Bay, enumerate under both dry wet weather conditions. Concentrations...

10.2166/wh.2013.131 article EN Journal of Water and Health 2013-04-19

Elevated As concentrations in shallow groundwater pose a major health threat Bangladesh and similarly affected countries, yet there is little consensus on the mechanism of release to or how it might be influenced by human activities. In this study, rate was measured directly with incubations lasting 11 months, using sediment collected simultaneously maintained under anaerobic conditions throughout study. Groundwater gray were as diluted slurries between 5 38 m depth, range over which ambient...

10.1021/es062903j article EN Environmental Science & Technology 2007-04-12

AME Aquatic Microbial Ecology Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsSpecials 61:45-56 (2010) - DOI: https://doi.org/10.3354/ame01434 Heterotrophic microplankton in lower Hudson River Estuary: potential importance of naked, planktonic amebas for bacterivory and carbon flux Amy E. Lesen1,*, Andrew R. Juhl2, O. Roger Anderson2 1Biology Department, Dillard University, 2601 Gentilly Blvd., New...

10.3354/ame01434 article EN Aquatic Microbial Ecology 2010-06-25

MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 436:1-16 (2011) - DOI: https://doi.org/10.3354/meps09277 FEATURE ARTICLE Seasonal development and differential retention of ice algae other organic fractions in first-year Arctic sea Andrew R. Juhl1,*,**, Christopher Krembs2,**, Klaus M. Meiners3,4 1Lamont-Doherty Earth Observatory Columbia University, 61...

10.3354/meps09277 article EN Marine Ecology Progress Series 2011-07-06

Genetic discrimination-defined as the denial of rights, privileges, or opportunities other adverse treatment based solely on genetic information (including family history)-is an important concern to patients, healthcare professionals, lawmakers, and members at risk for carrying a deleterious gene. Data from United States, Canada, Australia were collected 433 individuals Huntington disease (HD) who have tested either positive negative gene that causes HD affected 50% developing disorder but...

10.1002/ajmg.b.31079 article EN American Journal of Medical Genetics Part B Neuropsychiatric Genetics 2010-03-31

Abstract Genetic discrimination may be experienced in the day‐to‐day lives of people at risk for Huntington disease (HD), encompassing occurrences workplace, when seeking insurance, within social relationships, and during other daily encounters. At‐risk individuals who have tested either positive or negative genetic expansion that causes HD, as well at‐risk persons with a 50% chance developing disorder but not had DNA testing completed International RESPOND‐HD (I‐RESPOND‐HD) survey. One...

10.1002/ajmg.b.31080 article EN American Journal of Medical Genetics Part B Neuropsychiatric Genetics 2010-04-05

With rising atmospheric CO2, phytoplankton face shifts in ocean chemistry including increased dissolved CO2 and acidification that will likely influence the relative competitive fitness of different taxa. Here we compared physiological gene expression responses six species a diatom, raphidophyte, two haptophytes, dinoflagellates to ambient (~400 ppm) elevated (~800 CO2. Dinoflagellates had significantly slower growth rates higher, yet variable, chlorophyll per cell. The other tended have...

10.3389/fmicb.2017.02547 article EN cc-by Frontiers in Microbiology 2017-12-18

The population growth of some dinoflagellates is known to be reduced by exposure fluid flow. red‐tide dinoflagellate Lingulodinium polyedrum was used examine the effect conditions on flow‐induced inhibition growth. Three factors were tested: time relative light:dark (LD) cycle, illumination level, and culture phase (early vs. late exponential phase). Cultures maintained a 12:12 h LD cycle exposed one two flow conditions: quantified laminar shear produced Couette or unquantified generated in...

10.4319/lo.2000.45.4.0905 article EN Limnology and Oceanography 2000-06-01

Net population growth of some dinoflagellates is inhibited by fluid shear at stresses comparable with those generated during oceanic turbulence. Decreased net may occur through lowered cell division, increased mortality, or both. The dominant mechanism under various flow conditions was determined for the red‐tide dinoflagellate Lingulodinium polyedrum (Stein) Dodge. Cell division and mortality were direct observation isolated cells in 0.5‐mL cultures that shaken to generate unquantified...

10.1046/j.1529-8817.2002.00165.x article EN Journal of Phycology 2002-08-01

Abstract. Microbes in the atmosphere (microbial aerosols) play an important role climate and provide ecological biogeochemical connection between oceanic, atmospheric, terrestrial environments. However, sources environmental factors controlling concentration, diversity, transport, viability of microbial aerosols are poorly understood. This study examined culturable from a coastal environment Maine (USA) determined effect onshore wind speed fog presence on deposition rate, source, community...

10.5194/bg-9-803-2012 article EN cc-by Biogeosciences 2012-02-17

Coarse aerosols (particle diameter (Dp) > 2 μm) produced in coastal surf zones carry chemical and microbial content to shore, forming a connection between oceanic, atmospheric, terrestrial systems that is potentially relevant ecology human health. In this context, the effects of tidal height, wind speed, fog on coarse were quantified southern coast Maine, USA. Aerosols at site displayed clear marine influence had high concentrations ecologically nutrients. aerosol significantly increased...

10.1021/es1035128 article EN Environmental Science & Technology 2011-03-23

The concentration and composition of bioavailable nitrogen (N) phosphorus (P) in the upper ocean shape eukaryotic phytoplankton communities influence their physiological responses. Phytoplankton are known to exhibit similar responses limiting N P conditions such as decreased growth rates, chlorosis, increased assimilation P. Are these at molecular level across multiple species? To interrogate this question, five species from biogeochemically important, bloom-forming taxa (Bacillariophyta,...

10.3389/fmicb.2017.01279 article EN cc-by Frontiers in Microbiology 2017-07-18

The accuracy of sea ice algal production estimates is influenced by the range melting procedures used in studies to obtain a liquid sample for incubation, particularly relation duration melt and approach buffering osmotic shock. In this research, photophysiology from 14C incubations was compared field samples prepared three procedures: i) rapid ≤ 4 h bottommost (< 1 cm) layer scraped into large volume filtered seawater (salinity 27 - 30), ii) bottom 5 cm section diluted moderate over 24 20...

10.3389/feart.2019.00021 article EN cc-by Frontiers in Earth Science 2019-02-25
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