A5067220456- Aquatic Ecosystems and Phytoplankton Dynamics
- Marine and coastal ecosystems
- Constructed Wetlands for Wastewater Treatment
- Research Data Management Practices
- Fish Ecology and Management Studies
- Water Quality and Pollution Assessment
- Microbial Community Ecology and Physiology
- Soil and Water Nutrient Dynamics
- Aquatic Invertebrate Ecology and Behavior
- Tropical and Extratropical Cyclones Research
- Coastal and Marine Dynamics
- Marine Biology and Ecology Research
- Aquatic Ecosystems and Biodiversity
- Plant and animal studies
- Coastal wetland ecosystem dynamics
- Isotope Analysis in Ecology
- Species Distribution and Climate Change
- Water Quality Monitoring Technologies
- Wildlife Conservation and Criminology Analyses
- Aquatic and Environmental Studies
- Scientific Computing and Data Management
- Environmental Justice and Health Disparities
- Environmental Science and Water Management
- Radioactivity and Radon Measurements
- Avian ecology and behavior
Baylor University
2022-2025
Aquatic Systems (United States)
2023-2025
University of North Carolina at Chapel Hill
2018-2024
U.S. National Science Foundation
2024
University of Georgia
2017-2018
Climate change models often assume similar responses to temperatures across the range of a species, but local adaptation or phenotypic plasticity can lead plants and animals respond differently temperature in different parts their range. To date, there have been few tests this assumption at scale continents, so it is unclear if large-scale problem. Here, we examined that insect taxa show 96 sites grassy habitats North America. We sampled insects with Malaise traps during 2019-2021 (N = 1041...
Cyanobacterial harmful algal bloom (CyanoHAB) proliferation is a global problem impacting ecosystem and human health. Western Lake Erie (WLE) typically endures two highly toxic CyanoHABs during summer: Microcystis spp. in Maumee Bay that extends throughout the western basin, Planktothrix Sandusky Bay. Recently, USA Canada agreed to 40% phosphorus (P) load reduction lessen severity of WLE blooms. To investigate nitrogen (N) limitation biomass toxin production CyanoHABs, we conducted situ...
This article is composed of three independent commentaries about the state Integrated, Coordinated, Open, Networked (ICON) principles in American Geophysical Union Biogeosciences section, and discussion on opportunities challenges adopting them. Each commentary focuses a different topic: (a) Global collaboration, technology transfer, application (Section 2), (b) Community engagement, community science, education, stakeholder involvement 3), (c) Field, experimental, remote sensing, real-time...
ABSTRACT The Winam Gulf in the Kenyan region of Lake Victoria experiences prolific, year-round cyanobacterial harmful algal blooms (cyanoHABs) which pose threats to human, livestock, and ecosystem health. To our knowledge, there is limited molecular research on gulf’s cyanoHABs, thus, strategies employed for survival proliferation by toxigenic cyanobacteria this remain largely unexplored. Here, we used metagenomics analyze Gulf’s composition, function, biosynthetic potential. Dolichospermum...
Introduction Dissolved organic matter (DOM) composition varies over space and time, with a multitude of factors driving the presence or absence each compound found in complex DOM mixture. Compounds ubiquitously present across wide range river systems (hereafter termed core compounds) may differ chemical reactivity from compounds only few settings satellite compounds). Here, we investigated spatial patterns molecular formulae (occupancy) surface water sediments 97 corridors at continental...
We report 40 metagenomic libraries collected from the Winam Gulf of Lake Victoria during May-July 2022-2023 and an additional eight opportunistic adjacent Lakes Simbi, Naivasha, regional river systems. The sampling period captured cyanobacterial bloom events - shedding insight onto community composition genomic potential.
Lake Erie, USA-Canada, plays an important ecological and socioeconomic role but has suffered from chronic eutrophication. In particular, Western Erie (WLE) is the site of harmful algal blooms (HABs) which are suspected being driven by excessive nutrient (phosphorus (P) nitrogen (N)) inputs. During 2022 2023, in-situ dilution addition bioassays were conducted at a WLE bloom-impacted location to investigate whether reduction regime would be effective in limiting phytoplankton growth during...
GeoHealth research both characterizes and predicts problems at the nexus of earth human systems like climate change, pollution, natural hazards. While excels in area integrated science, there is a need to improve coordinated networked efforts produce open science enable environmental justice. There resource empower frontline populations that are disproportionately marginalized by injustice (i.e., unequal protection from harms lack access meaningful engagement decision making for healthy...
Abstract Optical water quality affects the quantity and spectral composition of underwater light available to photoautotrophs along with reflected off surface. In reservoirs, prominent gradients for optical clarity measures occur between inlets outlets, allowing rapid surveys ecosystem structure across diverse conditions tests relationships in situ remotely sensed indices. We used a sensor‐equipped boat clay‐rich subtropical drinking reservoir examine continuous spatial patterns relationship...
Dissolved organic matter (DOM) assemblages in freshwater rivers are formed from mixtures of simple to complex compounds that highly variable across time and space. These largely form due the environmental heterogeneity river networks contribution diverse allochthonous autochthonous DOM sources. Most studies are, however, confined local regional scales, which precludes an understanding how these arise at large, e.g., continental, spatial scales. The processes contributing also difficult study...
The freshwater alga Spirogyra grevilleana was used in an experimental biofiltration system to reduce levels of Escherichia coli, nitrates, and phosphates. Water collected from a 2.32 ha lake Atlanta, Georgia, USA pumped at constant rate (6.17 × 10-1 m3·hr-1) through the algal filtration devices with low high concentrations S. grevilleana. Effluent water tested over time for E. nitrate, phosphate, dissolved oxygen, pH levels. Both reduced coli by 100% significantly nitrate (30% ± 13%)...
Earth and Space Science Open Archive This preprint has been submitted to is under consideration at Science. ESSOAr a venue for early communication or feedback before peer review. Data may be preliminary.Learn more about preprints preprintOpen AccessYou are viewing the latest version by default [v1]GeoHealth Perspectives on Integrated, Coordinated, Open, Networked (ICON) ScienceAuthorsMalcolm AlexanderBarnardiDSujata REmaniiDSarahFortneriDLaurenHaygoodiDQingqingSuniDJalonne...
Earth and Space Science Open Archive This work has been accepted for publication in Science. Version of RecordESSOAr is a venue early communication or feedback before peer review. Data may be preliminary. Learn more about preprints. preprintOpen AccessYou are viewing the latest version by default [v2]Biogeosciences Perspectives on Integrated, Coordinated, Open, Networked (ICON) ScienceAuthorsDipankarDwivediiDA L DSantosiDM ABarnardiDT MCrimminsAMalhotraiDK ARodiDK SAhoS MBelliDBBomfimiDF...
Several experimental designs require serial dilutions of site water. To perform without the use prefiltered water or addition nutrients and trace metals in freshwater systems, major ion solutions (MIS) are required. MIS provides a nutrient metal free dilution medium to minimize hypertonic hypotonic effects on organisms samples during by balancing dissolved ions Ca2+, Mg2+, Na+, K+, Cl-, SO42-, Si4+ systems. equivalent no artificial sea for Unlike water, formulation systems changes from site....
The freshwater alga Spirogyra grevilleana was used in an experimental biofiltration system to reduce levels of Escherichia coli, nitrates, and phosphates. Water collected from a 2.32 ha lake Atlanta, Georgia, USA pumped at constant rate ( m3 hr-1) through the algal filtration devices with low high concentrations S. grevilleana. Effluent water tested over time for E. nitrate, phosphate, dissolved oxygen, pH levels. Both reduced coli by 100% significantly nitrate (30% ± 13%) phosphate (23% 5%)...
The freshwater alga Spirogyra grevilleana was used in an experimental biofiltration system to reduce levels of Escherichia coli, nitrates, and phosphates. Water collected from a 2.32 ha lake Atlanta, Georgia, USA pumped at constant rate ( m3 hr-1) through the algal filtration devices with low high concentrations S. grevilleana. Effluent water tested over time for E. nitrate, phosphate, dissolved oxygen, pH levels. Both reduced coli by 100% significantly nitrate (30% ± 13%) phosphate (23% 5%)...
Abstract There is a need for unified grazing method that can be used across the freshwater-to-marine continuum. To accomplish this, this research utilized dilution assays continuum and oligotrophic-to-hypereutrophic gradient by measuring size fractions of dilution-based mortality. This was investigated using 0.7 µm 0.2 prefiltered water major ion solutions (MIS) as diluent media use in Landry-Hassett bioassays run lake, river, estuarine (riverine lagoonal), oceanic shelf systems. Because MIS...