Colleen B. Mouw

Colleen B. Mouw
University of Rhode Island | URI · Graduate School of Oceanography

Ph.D. Oceanography

About

77
Publications
22,296
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Introduction
My group uses visible satellite remote sensing and optics to address questions related to phytoplankton ecology and physiology, primary productivity, carbon cycling, biogeochemistry, and physical drivers of biological variability in marine and freshwater systems. We are particularly interested in the ecological and physiological response of phytoplankton to climate change and the role that community structure plays in carbon cycling and ecosystem functioning. These interests are investigated through the combination of remotely sensed imagery, in situ data sets and collaboration with biogeochemical numerical modelers. Our work encompasses a variety of spatial scales ranging from single lakes to the global ocean
Additional affiliations
July 2019 - present
University of Rhode Island
Position
  • Professor (Associate)
August 2016 - present
University of Rhode Island
Position
  • Professor (Assistant)
August 2012 - August 2016
Michigan Technological University
Position
  • Professor (Assistant)

Publications

Publications (77)
Article
Full-text available
Functional traits are increasingly used to assess changes in phytoplankton community structure and to link individual characteristics to ecosystem functioning. However, they are usually inferred from taxonomic identification or manually measured for each organism, both time consuming approaches. Instead, we focus on high throughput imaging to descr...
Preprint
Full-text available
Time is perceived to be unidirectional and continuous in the philosophy of science. This continuity can play a crucial role in time series analysis as events are generally seen as an outcome of the past , or subject to events that occurred previously in time. In this study, we describe an ordinal approach to perceiving ecological time series – one...
Chapter
Differences in morphology, size, and pigmentation among various phytoplankton taxonomic groups impact their light absorption and scattering properties (e.g., Morel and Bricaud, 1981; Stramski and Kiefer, 1991; IOCCG, 2014), which modifies the color of the ocean. Optical satellite remote sensing enables the detection of backscattered sunlight emanat...
Article
The size structure of phytoplankton communities influences important ecological and biogeochemical processes, including the transfer of energy through marine food webs. A variety of algorithms have been developed to estimate phytoplankton size classes (PSCs) from satellite ocean color data. However, many of these algorithms were developed for appli...
Article
Full-text available
Plain Language Summary Understanding the oceanic cycles of carbon and other elements important for life, as well as how ocean life influences the Earth's climate, we must understand how the carbon fixed by phytoplankton during photosynthesis is consumed and redistributed throughout the ocean. How much carbon is fixed at a given place and time varie...
Article
Full-text available
Light emerging from natural water bodies and measured by radiometers contains information about the local type and concentrations of phytoplankton, non-algal particles and colored dissolved organic matter in the underlying waters. An increase in spectral resolution in forthcoming satellite and airborne remote sensing missions is expected to lead to...
Article
Full-text available
The abundance and size distribution of plankton in the surface ocean are key metrics to understanding primary and export production, food web dynamics, and the optical properties of the water column. Here we quantified cell size and abundance of phytoplankton species from mono-specific laboratory cultures, using optical, electrical, and image-based...
Technical Report
Full-text available
This report is intended as part of the important dialogue between the ocean colour and the biogeochemical/ecosystem/climate modelling communities. Numerical modellers are frequent users of ocean colour products, but many modellers remain unsure of the best way to use these products, and are often unaware of the uncertainties associated with them. O...
Article
Full-text available
Light emerging from natural water bodies and measured by remote sensing radiometers contains information about the local type and concentrations of phytoplankton, non-algal particles and colored dissolved organic matter in the underlying waters. An increase in spectral resolution in forthcoming satellite and airborne remote sensing missions is expe...
Data
Supplement to: Casey, KA et al. 2019: A global compilation of in situ aquatic high spectral resolution inherent and apparent optical property data for remote sensing applications. Earth System Science Data Discussions https://doi.org/10.5194/essd-2019-105 Light emerging from natural water bodies and measured by remote sensing radiometers contains...
Article
Full-text available
Phytoplankton play a key role as the base of the marine food web and a crucial component in the Earth's carbon cycle. There have been a few regional studies that have utilized satellite-estimated phytoplankton functional type products in conjunction with other environmental metrics. Here we expand to a global perspective and ask, what are the physi...
Article
Full-text available
This paper quantifies environmental effects of island-building operations in the South China Sea, which result from dredging and can negatively impact marine flora, fauna, and ecosystems. The extent of the damage caused by island-creation is believed to be large, as the South China Sea reefs support the largest concentration of marine biodiversity...
Article
Semi-analytical algorithms (SAAs) developed for multispectral ocean color sensors have benefited from a variety of approaches for retrieving the magnitude and spectral shape of inherent optical properties (IOPs). SAAs generally follow two approaches: 1) simultaneous retrieval of all IOPs, resulting in pre-defined bio-optical models and spectral dep...
Article
Full-text available
The remote sensing of chlorophyll a concentration from ocean color satellites has been an essential variable quantifying phytoplankton in the past decades, yet estimation of accessory pigments from ocean color remote sensing data has remained largely elusive. In this study, we validated the concentrations of multiple pigments (Cpigs) retrieved from...
Article
After a decade of program offerings, the Mentoring Physical Oceanography Women to Increase Retention (MPOWIR) program initiated a community wide survey to 1) assess the impact MPOWIR has had on retention of women in the field of Physical Oceanography, and 2) gauge where needs are being met and where gaps still exist. To investigate the impact of MP...
Article
Full-text available
The biodiversity and high productivity of coastal terrestrial and aquatic habitats are the foundation for important benefits to human societies around the world. These globally distributed habitats need frequent and broad systematic assessments, but field surveys only cover a small fraction of these areas. Satellite-based sensors can repeatedly rec...
Poster
Full-text available
Colored dissolved organic matter absorption varies significantly due to differences in source material, degradation pathways and in situ production. Satellite remote sensing provides a platform to observe this variability over broad spatial scales and time. However, current and near future sensors are/will be limited to measurements within the UV a...
Article
Aim: This study examined phytoplankton blooms on a global scale, with the intention of describing patterns of bloom timing and size, the effect of bloom timing on the size of blooms, and time series trends in bloom characteristics. Location: Global. Methods: We used a change‐point statistics algorithm to detect phytoplankton blooms in time series...
Article
Full-text available
Satellite remote sensing of colored dissolved organic matter (CDOM) has focused on CDOM absorption (aCDOM) at a reference wavelength, as its magnitude provides insight into the underwater light field and large-scale biogeochemical processes. CDOM spectral slope, SCDOM, has been treated as a constant or semi-constant parameter in satellite retrieval...
Article
Phytoplankton pigments absorb sunlight for photosynthesis, protect the chloroplast from damage caused by excess light energy, and influence the color of the water. Some pigments act as bio-markers and are important for separation of phytoplankton functional types. Among many efforts that have been made to obtain information on phytoplankton pigment...
Article
Full-text available
Rotavirus is the most common cause of diarrheal disease among children under five. Especially in South Asia, rotavirus remains the leading cause of mortality in children due to diarrhea. As climatic extremes and safe water availability significantly influence diarrheal disease impacts in human populations, hydroclimatic information can be a potenti...
Article
Full-text available
There is a growing use of remote sensing observations for detecting and quantifying freshwater cyanobacteria populations, yet the inherent optical properties of these communities in natural settings, fundamental to bio-optical algorithms, are not well known. Toward bridging this knowledge gap, we measured a full complement of optical properties in...
Article
Full-text available
Lake Superior is one of the largest freshwater lakes on our planet, but few optical observations have been made to allow for the development and validation of visible spectral satellite remote sensing products. The dataset described here focuses on coincidently observing inherent and apparent optical properties along with bio-geochemical parameters...
Article
Full-text available
The shunt of photosynthetically derived particulate organic carbon (POC) from the euphotic zone and deep remineralization comprises the basic mechanism of the “biological carbon pump.” POC raining through the “twilight zone” (euphotic depth to 1 km) and “midnight zone” (1 km to 4 km) is remineralized back to inorganic form through respiration. Accu...
Poster
Full-text available
Continuous in water measurements, optically classified satellite imagery, meteorological observations, and hydrodynamic model output are merged to elucidate the spatiotemporal impact of the Detroit River on the distribution of harmful algal blooms in the western Lake Erie basin.
Article
Full-text available
To improve our understanding of the role of phytoplankton for marine ecosystems and global biogeochemical cycles, information on the global distribution of major phytoplankton groups is essential. Although algorithms have been developed to assess phytoplankton diversity from space for over two decades, so far the application of these data sets has...
Article
Full-text available
To improve our understanding of the role of phytoplankton for marine ecosystems and global biogeochemical cycles, information on the global distribution of major phytoplankton groups is essential. Although algorithms have been developed to assess phytoplankton diversity from space for over two decades, so far the application of these data sets has...
Article
Full-text available
Phytoplankton are composed of diverse taxonomical groups, which are manifested as distinct morphology, size and pigment composition. These characteristics, modulated by their physiological state, impact their light absorption and scattering, allowing them to be detected with ocean color satellite radiometry. There is a growing volume of literature...
Article
The NASA Geostationary Coastal and Air Pollution Events satellite mission plans to keep an eye on short-term processes that affect coastal communities and ecosystems.
Poster
Full-text available
Parameterization of CDOM spectral slope (SCDOM) has not been consistent, both within the marine chemistry and optics communities. SCDOM provides an optically robust method for characterizing the source and diagenetic state of CDOM (e.g. composition), but use of SCDOM as a proxy for CDOM composition requires adoption of a common spectral range for S...
Article
Full-text available
Efficiency of the biological pump of carbon to the deep ocean depends largely on biologically mediated export of carbon from the surface ocean and its remineralization with depth. Global satellite studies have primarily focused on chlorophyll concentration and net primary production (NPP) to understand the role of phytoplankton in these processes....
Article
Full-text available
Particulate organic carbon (POC) flux estimated from POC concentration observations from sediment traps and 234Th are compiled across the global ocean. The compilation includes six time series locations: CARIACO, K2, OSP, BATS, OFP, and HOT. Efficiency of the biological pump of carbon to the deep ocean depends largely on biologically mediated expor...
Technical Report
Full-text available
From the introduction: Marine ecosystems are rich and biodiverse, often populated by thousands of competing and interacting species with a vast range of behaviors, forms, and life histories. This great ecological complexity presents a formidable challenge to understanding how marine ecosystems are structured and controlled, but also how they respon...
Conference Paper
Full-text available
Optical constituents in Arctic and sub-Arctic environments are highly variable on seasonal, annual, and spatial scales. Absorption due to phytoplankton (aphy) can vary due to both bloom state and community composition, while absorption due to colored dissolved organic matter (CDOM, aCDOM) can account for up to two-thirds of non-water light absorpti...
Poster
Full-text available
Continuous in water measurements and field samples are utilized to begin to elucidate environmental conditions leading up to and during the Microcystis harmful algal bloom in W. Lake Erie. Statistical approaches are used to diagnose sampled water masses and to identify the most important environmental indicators of bloom progression.
Article
Full-text available
We present a numerical model of the ocean that couples a three-stream radiative transfer component with a marine biogeochemical–ecosystem component in a dynamic three-dimensional physical framework. The radiative transfer component resolves the penetration of spectral irradiance as it is absorbed and scattered within the water column. We explicitly...
Article
Full-text available
We present a numerical model of the ocean that couples a three-stream radiative transfer component with a marine biogeochemical–ecosystem component in a dynamic three-dimensional physical framework. The radiative transfer component resolves the penetration of spectral irradiance as it is absorbed and scattered within the water column. We explicitly...
Conference Paper
Full-text available
We present analysis of phytoplankton community composition as it relates to the in water light field and water column physical structure in the eastern Bering Sea. Absorption attributed to phytoplankton, non-algal particles (NAP) and colored dissolved organic matter (CDOM) within the surface mixed layer and near the pycnocline were determined throu...
Poster
Full-text available
Satellite imagery and continuous in water measurements are merged to further interpret spatial and temporal patterns of harmful algal blooms (HABs). Continuous observations of water quality data were recorded for two summers by a Land/Ocean Biogeochemical Observatory (LOBO) buoy. Satellite imagery classified into optical water types (OWT) are used...
Article
Full-text available
We present a numerical model of the ocean that couples a three-stream radiative transfer component with a marine biogeochemical-ecosystem in a dynamic three-dimensional physical framework. The radiative transfer component resolves spectral irradiance as it is absorbed and scattered within the water column. We explicitly include the effect of severa...
Article
Full-text available
MPOWIR (Mentoring Physical Oceanography Women to Increase Retention) is a US communityinitiated and community-led mentoring program aimed at improving the retention of women physical oceanographers in academic and/or research positions. This article describes the MPOWIR program elements designed by the US physical oceanography community, quantifies...
Article
Full-text available
The absorption and fluorescence properties of chromophoric dissolved organic matter (CDOM) are reported for the inner shelf, slope waters and outer shelf regions of the eastern Bering Sea during the summer of 2008, when a warm, thermally stratified surface mixed layer lay over a cold pool (< 2 degrees C) that occupied the entire middle shelf. CDOM...
Conference Paper
All of the Great Lakes have undergone significant change over the period of time coinciding with satellite observations. These changes have triggered alterations in the long-term physical dynamics of the lakes, including warmer water temperatures, decreased winter ice cover and duration, and an earlier onset of stratification. Fluctuations in the p...
Conference Paper
Full-text available
The underlying chemistry and biology of Green Bay, Lake Michigan is strongly affected by exchange of water between Green Bay and Lake Michigan proper. Thermistors moored throughout the bay during the stratified season in 2012 allowed the behavior of cold water intrusions, originating from hypolimnetic Lake Michigan waters, to be tracked. To better...
Article
Full-text available
The absorption and fluorescence properties of chromophoric dissolved organic matter (CDOM) are reported for the inner shelf, slope waters and outer shelf regions of the eastern Bering Sea during the summer of 2008, when a warm, thermally stratified surface mixed layer lay over a Cold Pool ( 250 m) revealed low values of ag355 (0.155 ± 0.03 m–1) and...
Article
Satellite remote sensing offers one of the best spatial and temporal observational approaches. However, well-validated satellite imagery has remained elusive for Lake Superior. Lake Superior's optical properties are highly influenced by colored dissolved organic matter (CDOM), which has hindered the retrieval of chlorophyll concentration through ba...