Saltmarsh sediment fungal communities and arbuscular mycorrihizal fungi in sporobolus pumilus (Roth) (Poaceae) (Spartina patens) of the MInas Basin, Nova Scotia: identification, abundance and role in restoration
Bibliographic record
Abstract
Saltmarshes are ecosystems of significant ecological importance for their roles in coastal stability and fundamental roles in marine ecosystems. These ecosystems are in decline due to anthropogenic destruction and current climate regimes causing ocean level rise. Coastal restoration efforts are underway worldwide, but the success remains variable, with many failing in long term coastal stability. The fungal communities within saltmarsh sediment are understudied, especially in areas subject to mega-tidal influence such as the Bay of Fundy, Nova Scotia. My study investigates the fungi present in saltmarsh sediment and focuses on arbuscular mycorrhizal fungi (AMF); symbionts of the dominant saltmarsh grass Sporobolus pumilus (Roth) (Poaceae) (formerly Spartina patens). Internal transcribed spacer region 2 (ITS2)rDNA metaamplicon barcoding revealed many ubiquitous rhizosphere fungi, including AMF, in three saltmarsh sites around the Minas Basin, NS, but the persistent species composition may be based on the sediment characteristics. AMF colonization counts were conducted on S. pumilus roots and differed between the Kingsport saltmarsh and the Wolfville and Windsor saltmarshes, although the same Funneliformis species was found in all root tissue. Saltmarsh native AMF, Funneliformis geosporum, was propagated and used as a treatment for S. pumilus in three tidal mesocosm growth trials. This salt tolerant fungal symbiont increased host plant survival and growth under simulated saltmarsh conditions. These data indicate that fungal saltmarsh community establishment, especially AMF, are an essential consideration for improving saltmarsh restoration practices in areas of mega-tidal influence such as the Bay of Fundy.
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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 | 0.000 |
| 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".