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Record W4402643190 · doi:10.37099/mtu.dc.etdr/1787

SILPHID AND CARABID BEETLES IN AN EXPERIMENTAL FOREST TRIAL: iDNA AND DIETS, AND INSECT-HUMAN RELATIONSHIPS CAN BETTER INFORM FOREST MANAGEMENT

2024· dissertation· en· W4402643190 on OpenAlexaboutno aff
Katherine E. Higdon

Bibliographic record

Venuenot available
Typedissertation
Languageen
FieldEnvironmental Science
TopicEnvironmental DNA in Biodiversity Studies
Canadian institutionsnot available
Fundersnot available
KeywordsInsectEcologyAgroforestryEnvironmental scienceGeographyBiology

Abstract

fetched live from OpenAlex

Insect conservation, primarily focused on pollinators, is a growing issue amid concerns of climate change and the purported sixth mass extinction of Earth’s biodiversity. However, the focus on charismatic pollinators ignores a large portion of ecologically important and beneficial species. Having broader knowledge of insect diets and the impacts of anthropogenic disturbance on diets can better inform more comprehensive management approaches while also providing valuable knowledge with regards to trophic relationships between multiple species within ecosystems. This ensures the health and stability of ecosystems beyond pollination services. This research started by establishing the utility of Silphid beetles for invertebrate DNA (iDNA) studies using both Sanger and high-throughput Illumina sequencing methods. Subsequently, iDNA techniques were applied to assess population and diet responses of live-trapped Silphid and Carabid beetles to the Northern Hardwood Silviculture Experiment to Enhance Diversity (NH-SEED) in Alberta, Michigan. Silphid trapping revealed preferences for treatments with higher canopy, while light traps and pitfall traps indicated diet data at different developmental stages. Carabid trapping showed increasing diversity in recently harvested sites and changing community structure reflective of similar studies. Genetic analysis of the primary Carabid species collected, Pterostichus melanarius, indicated diet differences based on seasonality and silvicultural treatment, aligning with expected community responses, but providing novel information about earthworms in diets in forest systems, instead of agricultural systems. The final objective explored human-insect relationships, incorporating historical perspectives, art, storytelling, and engagement with Indigenous Knowledge Holders, advocating for a more holistic approach to insect conservation that respects and is inclusive of Indigenous communities. The results of these studies contribute to a broader understanding of anthropogenic disturbance and can influence how we approach insect conservation. By shifting the focus beyond pollinators and incorporating a more comprehensive understanding of diets and trophic relationships, conservation efforts can better address the complexities of ecosystem health and stability. Additionally, the consideration of diverse perspectives, including Indigenous knowledge, advocates for a more inclusive approach to conservation practices.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

How this classification was reachedexpand

Full frame machine prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.

metaresearch head score (Codex)0.001
metaresearch head score (Gemma)0.001
Version: metacan-v3-hybrid-931329e0061cValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Observational · Consensus signal: none
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.011
Threshold uncertainty score0.023

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0010.001
Meta-epidemiology (narrow)0.0010.000
Meta-epidemiology (broad)0.0010.000
Bibliometrics0.0000.000
Science and technology studies0.0010.001
Scholarly communication0.0010.000
Open science0.0010.000
Research integrity0.0010.001
Insufficient payload (model declined to judge)0.0020.000

Machine scores (provisional)

The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.

Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.

Opus teacher head0.029
GPT teacher head0.255
Teacher spread0.226 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it

Classification

machine, unvalidated

Machine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.

The models applied no category: nothing in the taxonomy fit this work.
Study designObservational
Domainnot available
GenreEmpirical

How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".

Quick stats

Citations0
Published2024
Admission routes1
Has abstractyes

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