Overview
This source page is a mechanical bulk-ingest record for a PDF in the research-pulls corpus. It preserves source-level identity, routeable product/analyte scope, and exact extracted numeric lines for later human or fresh-context audit. It does not derive HMTc thresholds, percentiles, or brand-by-brand comparisons.
Key numbers
The worker extracted the full PDF text with layout preservation twice and compared extraction hashes before commit. The following lines are copied from numeric/table-bearing regions of the PDF and retain the source units and wording where legible:
- survey of adult female licensed recreational fishers (n = 5000). Associations between awareness of fish
- A total of 391/5000 (7.8%) female fishers completed the survey, including 35/391 (9%) who fished
- to remediation, total Hg (THg) concentrations in the main tailings pile ranged from 0.14 to 2,420 mg/kg, while
- THg concentrations near the old ore furnace ranged from 16.1 to 1,180 mg/kg1. In 2010, Black Butte Mine
- THg concentrations in Cottage Grove Reservoir were lower compared to Black Butte Mine tailings (range: 0.7–
- 3.6 mg/kg)7. However, under flooded conditions, anaerobic microbes convert nominally less toxic inorganic
- residential fish and top predator, was 0.710 µg/g (ww) (n = 286)13. The maximum THg concentration (6.62 µg/g
- Cottage Grove Reservoir, was 0.295 µg/g (ww) (median: 0.171 µg/g (ww), n = 10)13, underscoring the human
- A total of 515 (10.3% of 5,000) participants returned the survey, including 508 (99%) via mail and 7 via the online
- survey (< 1%) (Supplementary File 1 Fig. S2). Of the 515 participants, 395 were female. Four female recreational
- of 391 female recreational fishers (7.8% of 5,000). In total, 73% and 27% of the participants resided in Lane and
- county (78% and 22%, respectively). Among the entire pool of 5,000 potential participants, the median age
- was 48 years (range: 18–91 years). The median age of female respondents was 62 years (range: 19–91 years),
- which was significantly older than non-respondents (median: 46 years, range: 18–90 years) (Chi-squared test,
- For race/ethnicity, 335 (86%) identified as White only, and 17 (4%) participants identified as Hispanic or
- Latino (n = 5), Native American (n = 4), Asian (n = 3), Native Hawaiian or Pacific Islander (n = 1), or Other
- Race (n = 4) (i.e., Persian or Portuguese) (Table 1). Additionally, 28 (7%) participants identified as mixed race/
- Table 1). Participant demographics for race/ethnicity were similar to the population demographics in Lane and
- Douglas counties, i.e., 79.4% and 86.0% who identified as White only and not Hispanic/Latino, respectively;
- and 5.0% and 3.9%, respectively, who identified as two or more races17. However, the proportion of Hispanic/
- Latino residents (3%) was lower in this cohort, compared to the population demographics in Lane and Douglas
- Twenty (5.1%) participants indicated a language other than English was spoken in the home. This proportion
- 8.5% and 3.9%, respectively17. Just one Spanish-language survey was returned, although five respondents
- All (n = 391) fish consumption warnings: fish consumption warnings:
- N (%) No (n = 132, 34%) Yes (n = 258, 66%) p-value
- Table 1. Characteristics of female anglers (n = 391 participants). Sample size for awareness of fish consumption
- warnings: n = 390 participants (1 missing observation). P-values are for Chi-squared test or 2-sided Fisher’s
- ethnicity, 5 categories were consolidated into 1 category: Hispanic/Latino (n = 5, 1%), Native Hawaiian or
- Pacific Islander (n = 1, < 1%), Asian (n = 3, < 1%) Native American (n = 4, 1%), and Other (n = 4, 1%). There
- indicated Spanish was spoken at home. Other languages spoken by study participants included German (n = 3),
- French (n = 3), Chinese (n = 2), Tagalog (n = 2), Ukrainian (n = 1), and Visayan (n = 1) (missing, n = 3).
- Just 5% of participants did not ingest fish (Table 1). The median number of fish meals ingested monthly, including
- fish that were caught and fish that were purchased from a store or vendor, was 3.5 meals (range: 0–30 meals/
- month) (Supplementary File 1 Table S2). Higher fish consumption was associated with more education (Kruskal-
- (Wilcoxon rank sum test, p = 0.02). Those who spoke English at home ingested more fish (median = 6 meals/
- monthly), compared to non-English speakers (median = 3 meals/monthly) (Wilcoxon rank sum test, p = 0.014).
- Two-thirds (66%) of female recreational fishers were aware of fish consumption warnings (Table 1). Using
- were all associated with increased odds of awareness of fish consumption warnings (Table 2). Specifically, among
- years, odds ratio (OR): 3.37, 95% confidence interval (CI): 1.01, 11.3; 46–60 years, OR: 3.85, 95% CI: 1.24,
- 12.0; ≥61 years, OR: 3.83, 95% CI: 1.28, 11.5). Attending some college or university and acquiring at least one
- those participants who attended no more than high school (some college or university, OR: 2.82, 95% CI: 1.23,
- 4.24; Bachelor, Master, or Doctoral degree, OR 3.23, 95% CI: 1.57, 6.66). Moderately higher household income
Methods (brief)
- Table 1. Characteristics of female anglers (n = 391 participants). Sample size for awareness of fish consumption
- In this random sample of female recreational fishers, a slightly higher proportion fished at Cottage Grove
- within the same range as percentages reported in prior studies, including a random sample of 4,452 residents
- living in eight states bordering the Great Lakes, USA (approximately 50% aware)19, a random sample of 1,774
- just 3.4% of the fishers21. In the Great Lakes, USA, a random sample of residents was surveyed using a paper-
- through fish consumption35. Future studies targeting a random sample of recreational fishers from Cottage
- before it was finalized and mailed to a simple random sample of 5,000 (29.7%) adult female recreational fishers
Implications
This page makes the source discoverable for category-level evidence routing. Values remain source-native and should be used only with the stated matrix, species, basis, geography, and censoring context from the paper. The page does not convert total mercury to methylmercury or use total arsenic as inorganic arsenic.
Wiki pages this source may touch
Verification notes
- Identity check: DOI, raw handle, candidate cite-key, and SHA-256 were compared against existing
wiki/sources/pages before creation. - Full-PDF read:
pdftotext -layoutwas run on the full PDF twice; extracted text hashes matched before the page was written. - Numeric verification: numeric/table-bearing lines were selected mechanically from the verified extraction and preserved without unit conversion or rounding.
- Brand firewall: the worker skips PDFs when extracted numeric lines appear brand/manufacturer-sensitive; this page contains category-level or species-level evidence only.
- HMTc firewall: no threshold, percentile, pass/fail, clean/dirty, or certification math is stated.
Update history
The five most recent substantive edits to this page, classified major (evidence or structure moved), correction (a published value or statement was wrong and has been fixed), or minor (narrative rewritten without changing the underlying evidence). Each description is derived from what the edit did to this page; the linked commit is the authoritative record, routine regeneration passes are excluded, and the full version history lives in git. When DOI minting comes online (see schema docs), each entry below will also link to a version-pinned DataCite DOI.