Stephen Mackay

ORCID: 0000-0002-2956-9626
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About
Contact & Profiles
Research Areas
  • Fish Ecology and Management Studies
  • Hydrology and Watershed Management Studies
  • Hydrology and Sediment Transport Processes
  • Infant Nutrition and Health
  • Algal biology and biofuel production
  • Neonatal Respiratory Health Research
  • Aquatic Ecosystems and Phytoplankton Dynamics
  • Freshwater macroinvertebrate diversity and ecology
  • Soil erosion and sediment transport
  • Clinical Nutrition and Gastroenterology
  • Soil and Water Nutrient Dynamics
  • Diatoms and Algae Research
  • Fish Biology and Ecology Studies
  • Enzyme Production and Characterization
  • Biofuel production and bioconversion
  • Water Quality and Pollution Assessment
  • Fish biology, ecology, and behavior
  • Child Nutrition and Water Access
  • Marine and fisheries research
  • Environmental DNA in Biodiversity Studies
  • Water Quality and Resources Studies
  • Innovation and Knowledge Management
  • Polysaccharides and Plant Cell Walls
  • Medication Adherence and Compliance
  • Open Source Software Innovations

Griffith University
2003-2025

University of North Carolina at Chapel Hill
2023-2024

University of California System
2019

University of the Western Cape
2012-2015

École Polytechnique Fédérale de Lausanne
2015

Marine Scotland
2005-2009

Summary 1. The importance of hydrologic variability for shaping the biophysical attributes and functioning riverine ecosystems is well recognised by ecologists water resource managers. In addition to ecological dependences flow aquatic organisms, human societies modify natural regimes provide dependable services, including supply, hydropower generation, flood control, recreation navigation. Management scarce resources needs be based on sound science that supports development environmental...

10.1111/j.1365-2427.2009.02307.x article EN Freshwater Biology 2009-09-09

Abstract Hydrologic metrics have been used extensively in ecology and hydrology to summarize the characteristics of riverine flow regimes at various temporal scales but there has limited evaluation sources magnitude uncertainty involved their computation. Variation bias, precision overall accuracy these influences ability correctly describe regimes, detect meaningful differences hydrologic through time space, define flow‐ecological response relationships. Here, we examine effects two primary...

10.1002/rra.1249 article EN River Research and Applications 2009-03-24

Summary 1. The provision of environmental flows and the removal barriers to water flow are high priorities for restoration where changes regimes have caused degradation riverine ecosystems. Nevertheless, regulation is often accompanied by in catchment riparian land‐use, which also can major impacts on river health via local habitat or modification stream energy regimes. 2. challenges determining relative importance flow, land‐use other as well deciding focus effort. As a consequence, efforts...

10.1111/j.1365-2427.2009.02219.x article EN Freshwater Biology 2009-06-16

ABSTRACT Flow regime characteristics (magnitude, frequency, duration, seasonal timing and rates of change) play a primary role in regulating the biodiversity ecological processes rivers. River classification provides foundation for comparing hydrologic regimes rivers development hydro‐ecological relationships to inform environmental flow management river restoration. This paper presents natural changes due dams floodgates Huai Basin, China, preparation an assessment. The monthly 45 stations...

10.1002/rra.1483 article EN River Research and Applications 2011-01-18

ABSTRACT The Ecological Limits of Hydrologic Alteration (ELOHA) is a new framework designed to develop environmental flow prescriptions for many streams and rivers in user‐defined geographic region or jurisdiction. This study presents hydrologic classifications comparisons natural altered flows southeast Queensland, Australia, support the ecological steps field trial ELOHA framework. We extended existing protocols classification by assessing stability classes. Model‐based clustering...

10.1002/eco.1473 article EN Ecohydrology 2014-01-27

This manuscript describes the collation of available water quality data from freshwater reaches surface streams within Great Barrier Reef catchment area, northeastern Australia. compilation represents one most comprehensive online datasets for historical tropical and subtropical around world. We document criteria selection associated publications as well processes cleaning used to produce a qualitative assessment datasets. The final includes 41 individual that collectively report 466 sites...

10.1038/s41597-025-04534-7 article EN cc-by-nc-nd Scientific Data 2025-02-18

Summary There is considerable debate over the impact of seal predation on salmonid populations in both Atlantic and Pacific oceans. Conventional hard‐part analysis scats has suggested that salmonids represent a minor component diet grey seals ( Halichoerus grypus ) harbour Phoca vitulina UK. However, it unclear whether this an accurate reflection or due to methodological problems. To investigate issue, we applied quantitative PCR (qPCR) examine presence Moray Firth, UK, during summers 2003...

10.1111/j.1365-2664.2007.01429.x article EN Journal of Applied Ecology 2007-12-07

Effective environmental flow management depends on identification of ecologically-relevant attributes to maintain or restore flows in the context other natural and human influences stream ecosystems. This study subtropical eastern Australia identified associations fish with climatic gradients, catchment topography, reach geology, habitat structure land use across 20 catchments. Land-use patterns associated stressors accounted for very little variation assemblage structure. Of 35 species...

10.1080/02626667.2013.844345 article EN Hydrological Sciences Journal 2013-10-21

Abstract Numbers of great cormorants Phalacrocorax carbo feeding in inland waters during winter have increased throughout Europe resulting concerns over their impacts on fisheries. Loch Leven is a world‐renowned sport fishery for trout and supports nationally important population wintering cormorants. The relationships between brown stocking, regional cormorant numbers counted were examined. Stocked fin‐clipped before release gut contents from sample 96 shot under scientific licence...

10.1017/s0952836905007387 article EN Journal of Zoology 2005-10-01

Post-smolt anadromous brown trout Salmo trutta, sea trout, from two Scottish west coast rivers, the Balgy and Shieldaig, flowing into adjacent lochs were tracked simultaneously using arrays of moored acoustic receivers to determine dispersal patterns loss rates. Fish tended stay close their natal rivers for first 14 day after entering sea, during which time about half fish lost study. Although initially overall pattern was similar individual both towards end study groups had converged one...

10.1111/j.1095-8649.2008.02154.x article EN Journal of Fish Biology 2009-02-01

Abstract The primary objective of this study was to test the relevance hydrological classification and class differences characteristics woody riparian vegetation in a subtropical landscape Queensland, Australia. We followed procedures environmental flow framework ELOHA – Ecological Limits Hydrologic Alteration. Riparian surveys at 44 sites distributed across five classes recorded 191 species 15, 500 individuals. There were among for richness, total abundance, abundance regenerating native...

10.1002/ece3.2249 article EN cc-by Ecology and Evolution 2016-07-27

Introduction Necrotizing enterocolitis (NEC) is a potentially fatal intestinal disease primarily affecting preterm infants. Early diagnosis of neonates with NEC crucial to improving outcomes; however, traditional diagnostic tools remain inadequate. Biomarkers represent an opportunity improve the speed and accuracy diagnosis, but they are not routinely used in clinical practice. Methods In this study, we utilized aptamer-based proteomic discovery assay identify new serum biomarkers NEC. We...

10.3389/fped.2023.1184940 article EN cc-by Frontiers in Pediatrics 2023-05-31

Necrotizing enterocolitis (NEC) is a severe and potentially fatal intestinal disease that has been difficult to study due its complex pathogenesis, which remains incompletely understood. The pathophysiology of NEC includes disruption tight junctions, increased gut barrier permeability, epithelial cell death, microbial dysbiosis, dysregulated inflammation. Traditional tools include animal models, lines, human or mouse organoids. While studies using those model systems have improved the...

10.3791/65605 article EN Journal of Visualized Experiments 2023-07-28

In 2005, a high percentage (50%) of Atlantic salmon Salmo salar fitted with acoustic transmitters, which entered rivers in the Cromarty Firth area north–east Scotland dropped back to estuary and ascended adjacent after 33–80 days freshwater residence. Fish residing non‐natal generate mixed stock fisheries, movements fish between could increase risk disease transmission catchments.

10.1111/j.1095-8649.2009.02201.x article EN Journal of Fish Biology 2009-04-01

Cryptocurrencies have emerged as a novel financial asset garnering significant attention in recent years. A defining characteristic of these digital currencies is their pronounced short-term market volatility, primarily influenced by widespread sentiment polarization, particularly on social media platforms such Twitter. Recent research has underscored the correlation between expressed various networks and price dynamics cryptocurrencies. This study delves into 15-minute impact informative...

10.48550/arxiv.2401.00603 preprint EN cc-by-nc-sa arXiv (Cornell University) 2024-01-01
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