Aquatic chemistry, an introduction emphasizing chemical equilibria in natural waters [book review]

Otolith chemistry is an effective technique for evaluating fish environmental history, but its utility in fisheries management has not been comprehensively examined. Thus, a review of otolith chemistry with emphasis on management applicability is presented. More than 1500 otolith chemistry manuscripts published from 1967 to 2015 are reviewed and descriptive case studies are used to illustrate the utility of otolith chemistry as a fisheries management tool. Otolith chemistry publications span a wide variety of topics (e.g. natal origins, habitat use, movement, stock discrimination and statistical theory) and species in freshwater and marine systems. Despite the broad distribution of manuscripts in a variety of fisheries, environmental and ecological journals, the majority of publications (83%, n = 1264) do not describe implications or applications of otolith chemistry for fisheries management. This information gap is addressed through case studies that illustrate management applications of otolith chemistry. Case studies cover numerous topics (e.g. natal origins, population connectivity, stock enhancement, transgenerational marking, pollution exposure history and invasive species management) in freshwater and marine systems using sport fishes, invasive fishes, endangered fishes and species of commercial and aquaculture importance. Otolith chemistry has diverse implications and applications for fisheries management worldwide. Collaboration among fisheries professionals from academia, government agencies and non-governmental organizations will help bridge the research-management divide and establish otolith chemistry as a fisheries management tool.

Chemistry to conservation: using otoliths to advance recreational and commercial fisheries management

. Public water supply systems (PWSS) are critical infrastructure
that is vulnerable to contamination and physical disruption. Exploring
susceptibility of PWSS to such perturbations requires detailed knowledge of
supply system structure and operation. The physical structure of the
distribution system (i.e., pipeline connections) and basic information on
sources are documented for most industrialized metropolises. Yet, most
information on PWSS function comes from hydrodynamic models that are seldom
validated using observational data. In developing regions, the issue may be
exasperated as information regarding the physical structure of the PWSS may
be incorrect, incomplete, undocumented, or difficult to obtain in many
cities. Here, we present a novel application of stable isotopes in water
(SIW) to quantify the contribution of different water sources, identify
static and dynamic regions (e.g., regions supplied chiefly by one
source vs. those experiencing active mixing between multiple sources), and
reconstruct basic flow patterns in a large and complex PWSS. Our analysis,
based on a Bayesian mixing model framework, uses basic information on the SIW
and production volumes of sources but requires no information on pipeline
connections in the system. Our work highlights the ability of stable isotopes
in water to analyze PWSS and document aspects of supply system structure and
operation that can otherwise be challenging to observe. This method could
allow water managers to document spatiotemporal variation in flow patterns
within PWSS, validate hydrodynamic model results, track pathways of
contaminant propagation, optimize water supply operation, and help monitor
and enforce water rights.

/pdf/isotopic-reconnaissance-of-urban-water-supply-system-5deb2yzeme.pdf

Isotopic reconnaissance of urban water supply system dynamics

The Laurentian Great Lakes are vast, spatially heterogeneous, and changing. Across these hydrologically linked basins, some conditions approach biogeochemical extremes for freshwater systems anywhe...

The Laurentian Great Lakes: A Biogeochemical Test Bed

A perspective on needed research, modeling, and management approaches that can enhance Great Lakes fisheries management under changing ecosystem conditions

Modeling the implications of multiple hatching sites for larval dynamics in the resurgent Saginaw Bay walleye population

Physicochemical characteristics of a southern Lake Michigan river plume

Diets and growth of age-0 walleye in a recently recovered population

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Modeling the implications of multiple hatching sites for larval dynamics in the resurgent Saginaw Bay walleye population

Physicochemical characteristics of a southern Lake Michigan river plume

Diets and growth of age-0 walleye in a recently recovered population