
Klaus B. HuebertCSS Inc. under contract to NOAA National Centers for Coastal Ocean Science
Klaus B. Huebert
PhD
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34
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Introduction
Publications
Publications (34)
The movement responses of juvenile fishes exposed to intermittent hypoxia mediate the effects of impaired water quality on estuarine nursery habitat function. Twenty-five juvenile spot (Leiostomus xanthurus) were implanted with hydroacoustic tags and tracked in the Neuse River Estuary (NRE), NC during multiple hypoxic episodes (dissolved oxygen, DO...
Early life survival is critical to successful replenishment of fish populations, and hypotheses developed under the Growth-Survival Paradigm (GSP) have guided investigations of controlling processes. The GSP postulates that recruitment depends on growth and mortality rates during early life stages, as well as their duration, after which the mortali...
Climate change has rapidly altered marine ecosystems and is expected to continue to push systems and species beyond historical baselines into novel conditions. Projecting responses of organisms and populations to these novel environmental conditions often requires extrapolations beyond observed conditions, challenging the predictive limits of stati...
Aerosol distributions have a potentially large influence on climate-relevant cloud properties but can be difficult to observe over the Arctic given pervasive cloudiness, long polar nights, data paucity over remote regions, and periodic diamond dust events that satellites can misclassify as aerosol. We compared Arctic 2008–2015 mineral dust and comb...
Eastern oysters (Crassostrea virginica) are an important component of the ecology and economy in coastal zones. Through the long-term consolidation of densely clustered shells, oyster reefs generate three-dimensional and complex structures that yield a suite of ecosystem services, such as nursery habitat, stabilizing shorelines, regulating nutrient...
Models and observations suggest that particle flux attenuation is lower across the mesopelagic zone of anoxic environments compared to oxic environments. Flux attenuation is controlled by microbial metabolism as well as aggregation and disaggregation by zooplankton, all of which shape the relative abundance of differently sized particles. Observing...
Shellfish hatcheries have become an increasingly important component of aquaculture production in the United States. Although the industry has been advancing technologically over time to stabilize production and supply, many hatcheries suffer regularly from bouts of stalled or failed production, termed crashes. Crashes are widely acknowledged to oc...
Scaling experimentally derived effects of CO 2 on marine fauna to population responses is critical for informing management about potential ecological ramifications of ocean acidification. We used an individual-based model of winter flounder to extrapolate laboratory-derived effects of elevated CO 2 assumed for early life stages of fish to long-ter...
As oceans and many estuaries become more acidic, identifying adaptable or nonadaptable species (“winners” or “losers”) will enable better predictions of community and ecosystem function alterations due to climate change. Marine bivalves are frequently subjects of ocean acidification (OA) research because of their perceived vulnerability, which also...
The occurrence of low dissolved oxygen (hypoxia) in coastal waters may alter trophic interactions within the water column. This study identified a threshold at which hypoxia in the northern Gulf of Mexico (NGOMEX) alters composition of fish catch and diet composition (stomach contents) of fishes using fish trawl data from summers 2006–2008. Hypoxia...
Climate predictions for the rapidly changing Arctic are highly uncertain, largely due to a poor understanding of the processes driving cloud properties. In particular, cloud fraction (CF) and cloud phase (CP) have major impacts on energy budgets, but are poorly represented in most models, often because of uncertainties in aerosol–cloud interactions...
We introduce a new, coupled modeling approach for simulating ecosystem-wide patterns in larval fish foraging and growth. An application of the method reveals how interplay between temperature and plankton dynamics during 1970−2009 impacted a cold-water species (Atlantic cod Gadus morhua) and a warm-water species (European anchovy Engraulis encrasic...
We review and compare four broad categories of spatially-explicit modelling approaches currently used to understand and project changes in the distribution and productivity of living marine resources including: 1) statistical species distribution models, 2) physiology-based, biophysical models of single life stages or the whole life cycle of specie...
As part of an ongoing synthesis of Gulf of Mexico zooplankton, we are developing statistical models for environmental influences (e.g., temperature and hypoxia) on plankton size distributions. This includes testing whether spatiotemporal patterns of plankton size spectra can be predicted from environmental monitoring data. Changes in plankton size...
Connectivity is essential for ecosystem functioning, and in particular for the population dynamics of species that use different habitats during consecutive life stages. Mangrove and seagrass habitats serve to replenish populations of a range of species that live on coral reefs, but we know little about the fate of these early stages and the spatia...
The Paris Conference of Parties (COP21) agreement renewed momentum for action against climate change, creating the space for solutions for conservation of the ocean addressing two of its largest threats: climate change and ocean
acidification (CCOA). Recent arguments that ocean policies disregard a mature conservation research field and that protec...
A new web interface for the Quirks larval fish model makes it easy for students and researchers to conduct individual-based modeling experiments on larval fish foraging behavior and growth physiology using only a web browser. Quirks is free open-source software, and has been validated across a wide range of larval fish types and environmental condi...
Increases in swimming ability have a profound influence on larval fish growth and survival by increasing foraging success, predator avoidance and the ability to favorably influence transport. Understanding how development and environmental factors combine to influence swimming performance in aquatic organisms is particularly important during the tr...
Mathematical models of foraging behavior and growth physiology are useful tools for the study of marine fish larvae. Our model “Quirks”, for example, predicted over half of the variability among 53 growth rates published in 17 empirical studies of young European anchovy, Atlantic cod, Atlantic herring, and European sprat larvae. A major challenge i...
This article introduces "Quirks," a generic, individual-based model synthesizing over 40 years of empirical and theoretical insights into the foraging behavior and growth physiology of marine fish larvae. In Quirks, different types of larvae are defined by a short list of their biological traits, and all foraging and growth processes (including the...
Hufnagl, M., Huebert, K. B., and Temming, A. 2013. How does seasonal variability in growth, recruitment, and mortality affect the performance of length-based mortality and asymptotic length estimates in aquatic resources? – ICES Journal of Marine Science, 70: 329–341.
We tested the sensitivity of eight methods for estimating total mortality from si...
We review intrinsic traits of the early life stages of marine fishes to gain a better understanding of how climate-driven changes in abiotic (temperature) and biotic (match–mismatch dynamics with prey) factors may differ among taxonomic groups and/or habitats (from low to high latitudes). Intrinsic traits related to the thermal sensitivity of devel...
The eastern tropical Pacific (ETP) is believed to be one of the largest
marine sources of the greenhouse gas nitrous oxide (N2O).
Future N2O emissions from the ETP are highly uncertain
because oxygen minimum zones are expected to expand, affecting both
regional production and consumption of N2O. Here we assess
three primary uncertainties in how N2O...
At the end of May, 17 scientists involved in an EU COST Action on Conservation Physiology of Marine Fishes met in Oristano, Sardinia, to discuss how physiology can be better used in modelling tools to aid in management of marine ecosystems. Current modelling approaches incorporate physiology to different extents, ranging from no explicit considerat...
The Florida Keys reef tract contains a suite of important communities, but there are indications that human activity has dramatically altered these communities. Historical data have documented declines in trophy fish size and live coral cover, but these datasets often lack spatial and temporal resolution. As the management focus in marine systems s...
The goals of this study were to measure vertical distributions of pelagic coral reef fish larvae, identify significant vertical migrations, and estimate the effects of vertical migrations between depths with different ambient currents on larval transport in the Straits of Florida. Spring, summer, and fall time-series of plankton net tows were condu...
Gray snapper are among the most commercially and recreationally important coral reef fishes of South Florida. In the gray snapper life cycle, larvae are pelagic, juveniles typically utilize mangrove habitat as nurseries, and adults generally associate with coral reefs. We used two eleven-year time-series (1999-2009) of visual survey data collected...
Three seasons of vertically stratified ichthyoplankton sampling at the edge of the Florida Current revealed consistent accumulations of some coral reef fish larvae under taxon-specific environmental conditions. Environmental variability ranging from predictable (seasonal differences in temperature, diel changes in light, and vertical gradients in m...
The supply of coral reef fish larvae from the open ocean to nearshore reefs is vital for the persistence of local fish populations. Larvae that are competent to settle are often fast swimmers, and their transport to suitable settlement habitat may depend on swimming behavior as well as currents. Our goal was to measure the effects of swimming behav...
The supply of coral reef fish larvae from the open ocean to reefs is vital for the persistence of local fish populations. Whether larvae are dispersed over hundreds of km or only few km depends on biophysical interactions between larvae and their environment. Relationships between environmental variables, larval swimming behavior, and larval transp...
Vertical distributions of marine fish larvae are of central importance to their ecology, because feeding, predation, and larval transport vary considerably with depth. While numerous studies have characterized vertical distributions of larvae, vertical swimming behavior of individual larvae is poorly understood. In this study, the role of hydrostat...