Variation in passerine use of burned and hayed planted grasslands
Bibliographic record
Abstract
ABSTRACT Creation of grassland communities is a popular approach to conserve grassland‐nesting waterfowl and songbirds. Much uncertainty remains regarding the most appropriate seed mixtures and the type and frequency of management. We conducted line‐transect songbird surveys in grasslands converted from cropland to native and tame grass‐forb mixtures and managed by burning (native only) or haying (native and tame) in Saskatchewan and Manitoba, Canada. Fields were 1–9 years post‐management (YPM). Our objective was to improve our understanding of the effects of management regime (native hayed, native burned and tame hayed fields) and frequency (YPM) on passerine density and occurrence in planted grassland. We found limited support for an effect of management regime on passerine density and occurrence in both provinces. Vesper sparrow (Pooecetes gramineus) occurrence in Saskatchewan was greatest in tame hayed fields, and clay‐colored sparrow (Spizella pallida) density in Manitoba was greater in tame hayed fields than in native burned fields up to 5 YPM. Years post‐management most strongly influenced the occurrence of vesper sparrows in Saskatchewan and sedge wrens (Cistothorus platensis); common yellowthroats (Geothlypis trichas); clay‐colored, Savannah (Passerculus sandwichensis), Le Conte's (Ammodramus leconteii), and Nelson's (A. nelsoni) sparrows; and bobolinks (Dolichonyx oryzivorus) in Manitoba. Five of the 8 species influenced by YPM exhibited a year‐dependent non‐linear response such that they reached their greatest density 4–5 YPM. Our results indicate that the type of stand (native or tame) or management (burning or haying) matters little to the grassland songbird community occupying planted cover fields and that the frequency of management will likely depend upon local environmental conditions in a given region or year. Some form of management of planted grasslands, however, should occur every 4–6 years to maintain habitat for a number of generalist grassland species. © 2017 The Wildlife Society.
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 imitationNot 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.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 0.000 |
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.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
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".