Publications by authors named "David A Gibbs"

The ContDataQC R package is a free, open-source tool that was developed to help water quality monitoring programs perform quality control (QC) procedures on continuous sensor data. ContDataQC helps users speed up and standardize the QC process, minimize undetected data errors, and make full use of their sensor data. It has three main functions: generate QC reports to detect anomalies and erroneous data values, merge QC'd data files from different time periods, and generate time series plots and basic summary statistics.

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  • The study examines variations in anthropogenic carbon net flux estimates from land, focusing on how definitions of "managed" vs. "unmanaged" forest land influence these calculations, using global Earth Observation datasets for accuracy.
  • In Brazil, from 2001 to 2020, Earth Observation (EO) data classified Brazil as a net carbon sink, while national reports indicated a net carbon source, highlighting discrepancies that can be traced back to differing methodologies and factors used in both datasets.
  • Results from Indonesia showed similar estimates between EO and national reports, but Malaysia revealed significant differences in both magnitude and sign, illustrating the complexities in accurately measuring forest carbon fluxes due to lack of detailed forest type data
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Changing environmental conditions are forcing natural resource managers and communities to adapt their strategies to account for global shifts in precipitation, temperature, sea level and more, all of which are occurring in addition to local human impacts. Adapting to threats from climate change requires a fundamental shift in the practice of natural resource management through the development of forward-looking "climate-smart" goals and strategies. Here we present a proof-of-concept application of a decision-support tool to help design climate-smart management actions for the watershed and coral reef management plan for Guánica Bay watershed in southwest Puerto Rico.

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  • Reports indicate that efforts to reduce phosphorus pollution to combat harmful algal blooms and hypoxia are not improving water quality in many areas.
  • A comprehensive inventory of phosphorus inputs and outputs in the U.S. shows that agricultural phosphorus use often exceeds crop removal, leading to further accumulation of "legacy" phosphorus.
  • Despite some declines in urban phosphorus sources due to restrictions on certain products, a lack of standardized phosphorus data complicates assessing watershed responses and targeting effective interventions.
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Globally increasing sea surface temperatures threaten coral reefs, both directly and through interactions with local stressors. More resilient reefs have a higher likelihood of returning to a coral-dominated state following a disturbance, such as a mass bleaching event. To advance practical approaches to reef resilience assessments and aid resilience-based management of coral reefs, we conducted a resilience assessment for Puerto Rico's coral reefs, modified from methods used in other U.

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Environmental decision- and policy-making must contend with uncertainty about the future that can hinder proactive environmental decisions, forcing environmental managers into reactive postures. To help prevent this, a variety of methods exist for exploring potential environmental futures and associated uncertainties. Producing environmental futures benefits those involved by supporting a systems-level understanding and expanding thinking beyond "business as usual".

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Scientists and managers of natural resources have recognized an urgent need for improved methods and tools to enable effective adaptation of management measures in the face of climate change. This paper presents an Adaptation Design Tool that uses a structured approach to break down an otherwise overwhelming and complex process into tractable steps. The tool contains worksheets that guide users through a series of design considerations for adapting their planned management actions to be more climate-smart given changing environmental stressors.

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Species-specific enemies may promote prey coexistence through negative distance- and density-dependent survival of juveniles near conspecific adults. We tested this mechanism by transplanting juvenile-sized fragments of the brooding corals Pocillopora damicornis and Seriatopora hystrix 3, 12, 24 and 182 cm up- and down-current of conspecific adults and monitoring their survival and condition over time. We also characterized the spatial distribution of P.

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Outbreaks of an unidentified ciliate have occurred on several occasions in blue crabs from Chesapeake Bay held during winter months in flow-through systems. The parasite was initially thought to be Mesanophrys chesapeakensis, but molecular analysis identified it as Orchitophyra stellarum, a facultative parasite of sea stars (Asteroidea). We investigated the host-parasite association of O.

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