Jessica Schultz

Jessica Schultz
University of Guelph | UOGuelph · Department of Integrative Biology

PhD Candidate University of Guelph

About

25
Publications
6,147
Reads
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150
Citations

Publications

Publications (25)
Article
Full-text available
The accuracy of specimen identification through DNA barcoding and metabarcoding relies on reference libraries containing records with reliable taxonomy and sequence quality. The considerable growth in barcode data requires stringent data curation, especially in taxonomically difficult groups such as marine invertebrates. A major effort in curating...
Preprint
Because DNA metabarcoding typically employs sequence diversity among mitochondrial amplicons to estimate species composition, nuclear mitochondrial pseudogenes (NUMTs) can inflate diversity. This study quantifies the incidence and attributes of NUMTs derived from the 658 bp barcode region of cytochrome c oxidase I (COI) in 156 marine animal genomes...
Article
Full-text available
The global lockdown to mitigate COVID-19 pandemic health risks has altered human interactions with nature. Here, we report immediate impacts of changes in human activities on wildlife and environmental threats during the early lockdown months of 2020, based on 877 qualitative reports and 332 quantitative assessments from 89 different studies. Hundr...
Preprint
Full-text available
The accuracy of the identification of unknown specimens using DNA barcoding and metabarcoding relies on reference libraries containing records with reliable taxonomy and sequence quality. A rampant growth in barcode data led to a stringent need for data curation, especially in taxonomically difficult groups such as marine invertebrates. A major eff...
Article
Full-text available
The glass sponge Aphrocallistes vastus contributes to the formation of large reefs unique to the Northeast Pacific Ocean. These habitats have tremendous filtration capacity that facilitates flow of carbon between trophic levels. Their sensitivity and resilience to climate change, and thus persistence in the Anthropocene, is unknown. Here we show th...
Article
Full-text available
The shifting baseline syndrome describes a gradual lowering of human cognitive baselines, as each generation accepts a lower standard of resource abundance or size as the new norm. There is strong empirical evidence of declining trends of abundance and body sizes of marine fish species reported from docks and markets. We asked whether these widespr...
Data
Lists of search terms and online sources used to find articles on ‘newsworthy’ fish. Lists of search terms and online sources used to find articles on ‘newsworthy’ fish.
Data
List of the 75 fish species reported in news items and assigned groupings. Species group categories include: all epipelagic shark species targeted recreationally and/or commercially (Oceanic sharks); epipelagic teleost fishes typically targeted by recreational fishers (Pelagic gamefish); or species not regularly targeted by fishers but notable for...
Data
Quantile regression results. Results of quantile regression analyses for newsworthy fishes in our database. Quantile regressions highlighted in grey did not meet the minimum sample size ratio required (ratio > 5) and were therefore not shown in respective figures. Quantile regressions highlighted in bold met the minimum sample size threshold and we...
Data
Relative weight of fish reported as being exceptionally large in printed news headlines from 1869 to 2015 for three categories of extinction risk. Weight of fish reported as being exceptionally large in printed news headlines from 1869 to 2015, relative to the maximum species-specific weight, for three categories of extinction risk: (A) unknown ris...
Data
Age-structured fisheries model simulation. Methods for creating probability distributions of the relative length (Lhuge/Linf) caught in simulated age-structured populations with varying fishing mortalities (F = 0.05, F = 0.2, F = 0.8) for different sampling efforts (N = 10000 top row, N = 1000 middle row, N = 100 bottom row). Dotted black vertical...
Data
Sensitivity to taxonomic uncertainty of trends in relative length of charismatic megafishes reported as being exceptional large in printed news headlines over time. Length of charismatic megafishes in printed news headlines from 1869 to 2015, relative to the maximum species-specific weight, (A) when all Mola are assumed to be Mola mola, and (B) whe...
Data
Relative weight of pelagic gamefish, oceanic sharks, and charismatic megafish reported as being exceptionally large in printed news headlines. Weight of fish reported as being exceptionally large in printed news headlines from 1869 to 2015, relative to the maximum species-specific weight, for three species groups: (A) pelagic gamefish (n = 73), (B)...
Data
Raw data used for analysis. The information gathered for each article retained in our analysis is given in the raw data. This includes article-specific data (e.g. species, reported measurements), species-specific data (e.g. proper and common names, length and weight data from FishBase and IGFA), and grouping information (species grouping, extinctio...
Preprint
Full-text available
Since 2014 divers from Ocean Wise have been SCUBA diving in the Cambridge Bay, Nunavut area collecting data on fishes, invertebrates and marine plants at numerous sites. For each dive a file is created that catalogues the species found and a rough abundance of that species. These files accumulate over time and are searchable by location, year, year...
Preprint
Since 2014 divers from Ocean Wise have been SCUBA diving in the Cambridge Bay, Nunavut area collecting data on fishes, invertebrates and marine plants at numerous sites. For each dive a file is created that catalogues the species found and a rough abundance of that species. These files accumulate over time and are searchable by location, year, year...
Preprint
Full-text available
Since 2014 divers from Ocean Wise have been SCUBA diving in the Cambridge Bay, Nunavut area collecting data on fishes, invertebrates and marine plants at numerous sites. For each dive a file is created that catalogues the species found and a rough abundance of that species. These files accumulate over time and are searchable by location, year, year...
Article
Full-text available
Echinoderm population collapses, driven by disease outbreaks and climatic events, may be important drivers of population dynamics, ecological shifts and biodiversity. The northeast Pacific recently experienced a mass mortality of sea stars. In Howe Sound, British Columbia, the sunflower star Pycnopodia helianthoides —a previously abundant predator...
Data
Data from transects and behavioural experiment
Technical Report
Full-text available
Seabed monitoring by the Vancouver Aquarium’s Howe Sound Research dive team has in the last two years included oceanographic monitoring of seawater conditions approximately 1 m off bottom at 16 m depth (zero tide) on two sides of a barrier reef between Howe Sound and Strait of Georgia, separated by only 74 m (Figure 41-1). Tide-forced upwelling on...
Article
Full-text available
The protection of imperilled fish species is increasingly urgent given ongoing fisheries declines and the degradation of aquatic habitats. In Canada, threatened aquatic species were less likely than terrestrial species to be listed under the Species at Risk Act (SARA), the main legal instrument for bestowing protection, in the early years of the Ac...

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Project (1)
Archived project
- Disentangle the impacts of multiple anthropogenic drivers on ecosystem indicators; - Understand how collaboration with community groups and citizen scientists can best support data collection efforts and common interests; - Use the best available tools and technology to inform responsible management decisions.