The impact of climate change on the flowering and fruiting phenology of Arctic plants in Nunavut, Canada
Bibliographic record
Abstract
Phenology is the timing of nature's seasonal events. Ambient temperature plays a key role in phenology and hence, as the climate warms, phenology will likely change. This thesis studied the impact of Arctic climate change on Arctic plant flowering and fruiting phenology in Nunavut, Canada. To establish a baseline for current plant phenology, the first question asked was 'How does flowering phenology vary across Nunavut?'. Contrary to what might be expected, plants at a more northerly location flower earlier or at the same time and for a shorter duration than conspecifics at a more southerly location. Observations of vast differences in flower abundance in three consecutive and climatically-contrasting years highlighted the challenges of reproductive success with weather extremes associated with contemporary climate change given that Arctic plants require three plus years to complete the sexual reproductive cycle. Finally, three methods, employing long-term phenology monitoring, historical phenological records and an elevation gradient, combined with temperature records, were used to ask the questions: 'How have temperatures in Nunavut changed?', 'How have Nunavut Arctic flowering and fruiting times responded to climate change?' and 'What is the predicted temperaturesensitivity of Arctic plants to rising temperatures of climate change?'. Annual temperatures in Nunavut are rising faster than the global average. However, in contrast to temperate regions where spring temperatures are rising the most, monthly temperatures in late summer, autumn and winter are rising significantly in Nunavut. Later-flowering species have advanced flowering times more than early-flowering species and seed dispersal times have advanced more than flowering times. Flowering time temperaturesensitivity is species specific and Nunavut region specific with mid-summer-flowering iii species more sensitive than early-and late-flowering species and Nunavut Arctic archipelago plants more sensitive than Nunavut mainland conspecifics. That Arctic plants' reproductive phenological events are temperature-sensitive is a good news story suggesting that they will respond to climate change and possibly experience greater reproductive success. Interspecific and inter-regional variation in phenological temperature-sensitivity suggests Arctic plant ecological community structure will alter with climate change but differentially across Nunavut.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 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) | 0.000 | 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 teacher head, 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".