Steven Loiselle

Steven Loiselle
Università degli Studi di Siena | UNISI

About

176
Publications
43,174
Reads
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5,710
Citations
Citations since 2017
63 Research Items
3510 Citations
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20172018201920202021202220230200400600
20172018201920202021202220230200400600
Additional affiliations
January 2014 - present
Earthwatch Europe
Position
  • Senior Lead

Publications

Publications (176)
Article
Until December 16, 2022, available for free download at this link: https://authors.elsevier.com/a/1f%7EUTB8ccutan <><<<><<<><<<><<<><<<><<<><<<><<<><<<><<<><<<><< Microplastics are substrates for microbial activity and can influence biomass production. This has potentially important implications in the sea-surface microlayer, the marine boundary...
Article
Cities are highly complex, inter-connected social-ecological systems, encompassing social, built and natural/semi-natural components. They interact with their surrounding extra-urban areas at varying scales, from peri-urban and rural to global. Space is a valuable commodity in cities. However, in most instances, city planners tend to think about in...
Article
Full-text available
Several studies in Lake Tanganyika have effectively employed traditional methods to explore changes in water quality in open waters; however, coastal monitoring has been restricted and sporadic, relying on costly sample and analytical methods that require skilled technical staff. This study aims in validating citizen science water quality collected...
Article
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The coronavirus pandemic (Covid-19) has influenced resource use and how people interact with their environment, with changing priorities and competing public health factors affecting pro-environmental behaviours at individual, societal, business and political levels. We used data from an online plastic footprint calculator to explore temporal chang...
Conference Paper
Full-text available
Sustainable river management should consider potential impacts on ecosystem services in decision-making with respect to mitigating future climate impacts. In this respect, there is a clear need to better understand how nature-based solutions (NBS) can benefit specific ecosystem services, in particular within the complex spatial and temporal dynamic...
Article
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With the advent of the SARS-CoV-2 pandemic, Wastewater-Based Epidemiology (WBE) has been applied to track community infection in cities worldwide and has proven succesful as an early warning system for identification of hotspots and changingprevalence of infections (both symptomatic and asymptomatic) at a city or sub-city level. Wastewater is only...
Article
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Conventional water quality monitoring has been done for decades in Lake Tanganyika, under different national and international programs. However, these projects utilized monitoring approaches, which were temporally limited, labour intensive and costly. This study examines the use of citizen science to monitor the dynamics of coliform concentrations...
Technical Report
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Currently in its pilot phase, Defra’s Natural Capital and Ecosystem Assessment (NCEA) aims in the long term to deliver high quality national and local evidence to assess the state and condition of biodiversity, ecosystems, and natural capital assets across terrestrial, freshwater and marine environments. Ultimately, this evidence will guide the UK...
Article
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Microplastics and nanoplastics have a range of impacts on the aquatic environment and present major challenges to their mitigation and management. Their transport and fate depend on their composition, form, and the characteristics of the receiving environment. We explore the spatial and temporal dynamics of plastic particles in the world’s second-l...
Article
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Ecosystem services are increasingly being considered in decision-making with respect to mitigating future climate impacts. In this respect, there is a clear need to identify how nature-based solutions (NBS) can benefit specific ecosystem services, in particular within the complex spatial and temporal dynamics that characterize most river catchments...
Article
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Urban lakes play a major role in the socio-cultural and ecological sustainability of many cities, but are often under major development and pollution pressures. Urban decision makers are faced with a challenging task of identifying the causes of their decline and building plans for their conservation or rejuvenation. Powai Lake is a perfect example...
Article
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The largest blue-green infrastructures in industrialized, urbanized and developed regions in China are often multiuse wetlands, located just outside growing urban centers. These areas have multiple development pressures while providing environmental, economic, and social benefits to the local and regional populations. Given the limited information...
Article
The impacts of COVID-19 lockdowns on air quality around the world have received wide attention. In comparison, assessments of the implications for water quality are relatively rare. As the first country impacted by COVID-19, China implemented local and national lockdowns that shut down industries and businesses between January and May 2020. Based o...
Conference Paper
Full-text available
The development of new approaches for the analysis of long-term changes in riverine carbon, hydrological and nutrient cycles is important to identify potential impacts on the ecosystem services provided to the local population. In the present study, we explore a series of scenario of climate and river basin management on the spatial variations of c...
Article
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Nature-based solutions (NbS) provide direct benefits to people who live in areas where these approaches are present. The degree of direct benefits (thermal comfort, reduced flood risk, and mental health) varies across temporal and spatial scales, and it can be modelled and quantified. Less clear are the indirect benefits related to opportunities to...
Article
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A need for multi-functional assessment tools evaluating trade-offs and co-benefits for various types of Nature-Based Solutions (NBS) has been increasingly identified in recent years. Methodologically, concepts for a tool are presented which include quantifying the demand and potential for NBS to enhance ecosystem service (ES) provision, and linking...
Article
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Urban green spaces are often promoted as nature-based solutions, thus helping to mitigate the negative effects of climate change. Estimating the potential environmental benefits provided by urban green space is difficult because of inconsistencies in management practices and their heterogeneous nature. Collecting data across such a spectrum of cont...
Article
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Microplastic contamination has been linked to a range of impacts on aquatic environments. One important area that is only beginning to be addressed is the effect of microplastics on marine carbon cycling and how these compare to the effects related to inorganic particles typically present in ocean waters. The present study explores these impacts on...
Article
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Wind-speed decline is an important impact of climate change on the eastern Asian atmospheric circulation. Although wind does not determine algae biomass in eutrophic lakes, it is a decisive factor in the formation and severity of algae blooms. Based on 2000–2018 MODIS images, this study compared the effects of wind speed on algal blooms in three ty...
Chapter
Full-text available
Interest in citizen science is growing, including from governments and research funders. This interest is often driven by a desire for positive environmental impact, and the expectation that citizen science can deliver it by engaging the public and simultaneously collecting environmental data. Yet, in practice, there is often a gap between expected...
Article
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Citizen science has the potential to support the delivery of the United Nations Sustainable Development Goals (SDGs) through its integration into national monitoring schemes. In this study, we explored the opportunities and biases of citizen science (CS) data when used either as a primary or secondary source for SDG 6.3.2 reporting. We used data fr...
Presentation
Full-text available
The concept of a plastic footprint is one that has been relatively well developed in recent years, with plastic calculators now available online for the public to find out about their personal plastic consumption. Such calculators as the one released by Earthwatch Europe (link) inform respondents about the volume of plastic they use on an annual ba...
Preprint
Full-text available
Citizen science has the potential to support the delivery of the United Nations Sustainable Development Goals (SDGs) through its integration into national monitoring schemes. In this study, we explore the opportunities and biases of citizen science (CS) data when used either as a primary or secondary source for SDG 6.3.2 reporting. We use data from...
Article
Full-text available
Plastic particles from packaging, personal care products, synthetic clothing, and many other applications, are a potential risk to the ocean’s health. Tiny, light particles of plastic can float on the sea surface for a long time. The sea surface is a special place: it is rich in chemical compounds produced by marine organisms below. Sometimes these...
Article
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Water transparency, usually denoted by Secchi disk depth (SSD), represents the first-order description of water quality and has important implications for the diversity and productivity of aquatic life. In China, lakes supply freshwater and ecosystem services to nearly a billion people. Therefore, real time monitoring of lake transparency is of gre...
Article
One of the major challenges in understanding the dynamics of the ocean’s health and functioning is the potential impact of the increasing presence of plastic. Besides the verified and macroscopic effects on marine wildlife and habitats, micro and macroplastics offer potential sites for microbial activity and chemical leaching. Most marine plastic i...
Article
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The use and management of single use plastics is a major area of concern for the public, regulatory and business worlds. Focusing on the most commonly occurring consumer plastic items present in European freshwater environments, we identified and evaluated consumer-based actions with respect to their direct or indirect potential to reduce macroplas...
Thesis
Full-text available
The production and use of petroleum based products for transportation have important global implications, both environmentally as well as economically. To reduce the impact of the extraction, refining and utilization of these products, one important opportunity is to improve the efficiency of the petroleum refining process to reduce the concentrati...
Article
Eutrophication of inland freshwater bodies is a major threat to the ecosystem services. Many studies have focused on using surface or near surface phytoplankton biomass to determine trophic status or bloom conditions. However, surface phytoplankton biomass can change quickly due to the vertical migration of phytoplankton. A more appropriate indicat...
Article
Full-text available
Microplastics are a major environmental challenge, being ubiquitous and persistent as to represent a new component in all marine environments. As any biogenic particle, microplastics provide surfaces for microbial growth and biofilm production, which largely consists of carbohydrates and proteins. Biofilms influence microbial activity and modify pa...
Article
Full-text available
Understanding and managing plastic pollution is an increasingly important environmental priority for policy makers, businesses and scientists. Awareness of the potential damage to the world's oceans has grown but there is less attention given to freshwater ecosystems. Yet, rivers are the dominant source of plastic pollution to the marine environmen...
Conference Paper
Green Infrastructure is a nature-based-solution with the potential of mitigating the harmful and even deadly consequences of climate change and urbanisation in our urban areas. In particular, urban trees provide us with multiple ecosystem services, such as storm water control, carbon sequestration, soil health and temperature regulation. When suppo...
Article
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The ecological degradation of urban rivers and streams has been termed the 'urban stream syndrome' and attributed to increased catchment urbanization. Limiting future degradation requires an understanding of the drivers of reduced water quality at both catchment and site scales. The goal of this study was to identify the probable drivers of turbidi...
Poster
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This research is investigating the trade-offs between the multiple ecosystem services of trees Trees are naturally sustainable as circular systems, providing multiple ecosystem services to mitigate and adapt to climate change Urban trees are nature-based solutions that provide us with multiple ecosystem services, such as stormwater control, carbon...
Article
An absorption-based approach was used to determine surface particulate organic carbon (POC) concentrations in both inland and coastal waters. The improved performance of this approach was based on the specification of local POC absorption characteristics based on dominant POC sources; phytoplankton or detritus based. This specification was made usi...
Article
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The involvement of volunteers in aspects of freshwater research and monitoring has a long history. However , the advent of smart technology and access to the internet has opened up the possibility of mass public participation in science, termed citizen science. The potential of citizen science to generate data over wider spatial and temporal scales...
Article
Full-text available
Plastic particles are ubiquitous in the marine environment. Given their low density, they have the tendency to float on the sea surface, with possible impacts on the sea surface microlayer (SML). The SML is an enriched biofilm of marine organic matter, that plays a key role in biochemical and photochemical processes, as well as controlling gas exch...
Article
Full-text available
The OLI (Operational Land Imager) sensor on Landsat-8 has the potential to meet the requirements of remote sensing of water color. However, the optical properties of inland waters are more complex than those of oceanic waters, and inland atmospheric correction presents additional challenges. We examined the performance of atmospheric correction (AC...
Article
Full-text available
Column integrated algal biomass provides a robust indicator for eutrophication evaluation because it considers the vertical variability of phytoplankton. However, most remote sensing-based inversion algorithms of column algal biomass assume a homogenous distribution of phytoplankton within the water column. This study proposes a new remote sensing-...
Article
Interest in urban agriculture has increased rapidly in recent decades, but little is known about the effect of potential contaminants, such as groundwater pollution, in urban areas. Furthermore, local and timely science necessary for developing place-based solutions and management plans are lacking. We present a citizen-science-driven case study of...
Article
Full-text available
About 5 trillion plastic particles are present in our oceans, from the macro to the micro size. Like any other aquatic particulate, plastics and microplastics can create a micro-environment, within which microbial and chemical conditions differ significantly from the surrounding water. Despite the high and increasing abundance of microplastics in t...
Article
Studies of the environmental factors that lead to cyanotoxic blooms in tropical/subtropical reservoirs are limited. While technological advances for water treatment and remediation techniques can mitigate the effects of cyanobacterial blooms, the identification of initial drivers and tipping points for minimizing cyanotoxin concentrations could be...
Article
Full-text available
The involvement of volunteers in the monitoring of the environment holds great potential to gather information on a wider temporal and spatial scale than is currently possible. However, the mass involvement of citizens in monitoring freshwater health is a relatively new field and subject to uncertainty. Here, we examine 1192 samples collected acros...
Presentation
Summary presentation of mid-term results of projects WaRYWeBio: “Water resource behaviors in Yangtze intermediate basin and wetlands' biodiversity” and BioGeoLakes: “New Earth Observation tools for biogeochemical studies of Yangtze Valley lakes”
Poster
Full-text available
Our cities are increasingly impacted by climate change and growing urban populations. These changes are rapidly modifying urban environments, with knock-on effects on health and quality of life. In many cities, ecosystem functioning and services have been heavily compromised, requiring urgent action from actors in all sectors, public, corporate, ac...
Conference Paper
Full-text available
Cities are becoming increasingly populated and overwhelmingly difficult to understand and manage, a situation exacerbated by the rapid detrimental effects of climate change and urbanization. There is urgent need to develop new institutional, technical and social tools to help mitigate the impacts of, for example, extreme heat and flooding events th...
Article
Full-text available
While the role of citizen science in engaging the public and providing large-scale datasets has been demonstrated, the nature of and potential for this science to supplement environmental monitoring efforts by government agencies has not yet been fully explored. To this end, the present study investigates the complementarity of a citizen science pr...
Article
The Ocean and Land Color Imager (OLCI) on the Sentinel-3A satellite, which was launched by the European Space Agency in 2016, is a new-generation water color sensor with a spatial resolution of 300 m and 21 bands in the range of 400–1020 nm. The OLCI is important to the expansion of remote sensing monitoring of inland waters using water color satel...
Poster
Full-text available
Ecosystem observations & water conditions Turbidity (NTU) FWW KIT FreshWater Watch (FWW) is an international Citizen Science project investigating the water quality at a global scale. Citizen Science Osservatorio, located in Ravenna, has chosen this programme because it represent a solid structure for the high and continuous involvement of citizens...
Article
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Extensive monitoring of cyanobacterial blooms in lakes and reservoirs can provide important protection for drinking water sources. In most inland waterbodies, phycocyanin (PC) concentrations are the best indicator of cyanobacteria distribution. PC has a characteristic absorption peak near 620 nm; however, reflectance at this wavelength is only avai...
Article
Full-text available
The potential impacts of citizen science initiatives are increasing across the globe, albeit in an imbalanced manner. In general, there is a strong element of trial and error in most projects, and the comparison of best practices and project structure between different initiatives remains difficult. In Brazil, the participation of volunteers in env...
Article
The occurrence and related risks from cyanobacterial blooms have increased world-wide over the past 40 years. Information on the abundance and distribution of cyanobacteria is fundamental to support risk assessment and management activities. In the present study, an approach based on Empirical Orthogonal Function (EOF) analysis was used to estimate...
Article
Full-text available
Satellite remote sensing can be an effective alternative for mapping cyanobacterial scums and aquatic macrophyte distribution over large areas compared with traditional ship's site-specific samplings. However, similar optical spectra characteristics between aquatic macrophytes and cyanobacterial scums in red and near infrared (NIR) wavebands create...
Article
Urban streams are vulnerable to a range of impacts, leading to the impairment of ecosystem services. However, studies on phytoplankton growth in tropical lotic systems are still limited. Citizen science approaches use trained volunteers to collect environmental data. We combined data on urban streams collected by volunteers with data obtained by pr...
Article
Streams in urban areas are prone to degradation. While urbanization-induced poor water quality is a widely observed and well documented phenomenon, the mechanism to pinpoint local drivers of urban stream degradation, and their relative influence on water quality, is still lacking. Utilizing data from the citizen science project FreshWater Watch, we...
Article
Full-text available
Global metrics of land cover and land use provide a fundamental basis to examine the spatial variability of human-induced impacts on freshwater ecosystems. However, microscale processes and site specific conditions related to bank vegetation, pollution sources, adjacent land use and water uses can have important influences on ecosystem conditions,...
Article
In shallow lakes, algal biomass is a fundamental indicator of eutrophication status. However, the vertical movement of phytoplankton within the water column can complicate the determination of total phytoplankton biomass using remotely sensed data of surface conditions. In this study, we develop, validate, and apply a new approach to use remotely s...
Article
Full-text available
Understanding the relationship between water quality and ecosystem services valuation requires a broad range of approaches and methods from the domains of environmental science, ecology, physics and mathematics. The fundamental challenge is to decode the association between ‘ecosystem services geography’ with water quality distribution in time and...