Siliceous algae response to the “Great Acceleration” of the mid-20th century in Crawford Lake (Ontario, Canada)
A potential candidate for the Anthropocene GSSP
Bibliographic Data
| ID | 7400237 |
|---|---|
| Authors | Cale Ac Gushulak (0000-0001-9780-3886, Queen's University, corresponding author), Matthew Marshall (0000-0002-1884-1452, Carleton University), Brian F Cummings (0000-0001-7254-3248, Queen's University), Brendan M Llew-Williams (Brock University), Robert T Patterson (0000-0002-7760-2961, Carleton University), Francine Mg Mccarthy (0000-0001-5038-8355, Brock University) |
| Year | 2021 |
| Volume | 9 |
| Issue | 3 |
| Pages | 571-590 |
| Publication date | 2021-09-18 |
| Open Access | Yes |
| Type | ARTICLE |
| Venue | The Anthropocene Review (JOURNAL) |
| Journal identifiers | ISSN: 2053-0196 • E-ISSN: 2053-020X |
| Publisher | SAGE Publishing (PUBLISHER • US) |
| DOI | 10.1177/20530196211046036 |
| OpenAlex | W3200874300 |
| Language | EN |
| Citations received | 5 |
| References cited | 69 |
Diatom and chrysophyte assemblages from varved sediments of meromictic Crawford Lake, Ontario record major environmental changes resulting from spatially broadening anthropogenic environmental stressors related to the “Great Acceleration” in the mid-20th century. Biannual assessment of diatom and chrysophyte assemblages over the last ~200 years allowed for rate of change analysis between adjacent samples that increased substantially during the mid-20th century, concurrent with significant generalized additive model trends. Changes in diatom and chrysophyte assemblages were likely driven by multiple anthropogenic stressors including local forestry harvesting, agriculture, and milling activities, acidic deposition from regional industrial processes, and anthropogenic climate warming. Novel siliceous algal assemblages now exist in Crawford Lake, likely related to the complexities of the above mentioned local and regional stressors. The major assemblage changes at the proposed base of the Anthropocene Epoch detected in this study support the laminated sequence from Crawford Lake as a strong potential candidate for the Anthropocene GSSP
Anthropocene · Biostratigraphy · Climate change · Diatom · Environmental change · Geography · Global Boundary Stratotype Section and Point · Global warming · Paleolimnology · Physical geography · STREAMS · Aquatic Ecosystems and Phytoplankton Dynamics · Environmental Science · Geology and Paleoclimatology Research · Marine and coastal ecosystems · Ecology · Geology · Oceanography · Paleontology
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| Citations per year | 1.67 |
|---|---|
| Citation span | 2023 - 2026 (4) |
| Highly cited | No |