Replication data for: Barkley Sound intertidal long-term monitoring: rocky substrate methodology
Notice bibliographique
Résumé
In 1997 the Bamfield Marine Station (now Bamfield Marine Sciences Centre) established a long-term monitoring project to collect baseline data on the distribution and abundance of macroorganisms at three intertidal sites in Barkley Sound. Data is presented here for seaweed cover (%), understory cover (%) and invertebrate density for two sites on Wizard Islet. The third site located at the mouth of Grappler Inlet is discussed in the study report. Wizard Islet (48°51’29.5”N, 125°09’31”W) is located within the Deer Group Islands in Barkley Sound and has an area of 1.73 hectares at low tide. The sheltered site (with less wave exposure) is located on a 50m stretch of fixed rocky shore on the northeast side and is characterized by Fucus and Phyllospadix (seagrass). The exposed site is located on a 50m stretch of fixed rocky shore on the southwest side and is characterized by Egregia (feather-boa kelp), goose-necked barnacles and Alaria (brown alga). At both sites, a line of numbered tags spaced at 1m intervals at the same tidal height was installed. The tags denote the upper origin for 50 vertical transects. Fifteen tag numbers were chosen randomly, and transects were extended from the tags to the water. At the sheltered site, the tag numbers were 8, 9, 11, 15, 17, 19, 23, 24, 28, 35, 36, 40, 42, 48, 49. At the exposed site, they were 4, 9, 12, 13, 15, 16, 18, 23, 26, 31, 32, 36, 42, 44, 45, 49. Sampling was done at tidal heights 0.2, 0.5, 1.0, 1.5, 2.0, 2.5, 3.0 and 3.5m. To maintain consistency, all quadrats were positioned to the left and above each point on the transect (when facing away from the water). Algal canopy cover (%) which includes seaweeds and one grass was estimated using a 25x25cm quadrat divided into 100 squares or 1%. A square was counted if it contained >=50% canopy cover. If a species was present but <50%, abundance was recorded as 0.5%. Understory species cover (%) which includes algal species, encrusting invertebrates and rocks was estimated using the point intercept method for 20 random points in a 25x25cm quadrat of 100 squares. Since 20 of 100 possible intersections were marked, each point represented 5%. Each point could contain multiple organisms (layers), e.g. Balanus growing on Mytilus. Invertebrates were counted if >=50% of the organism occurred within the quadrat. Quadrat size depended on the density of the organism (e.g. 12.5x12.5cm for Littorina, 25x25cm for Hemigrapsus, 50x50cm for Pisaster). Data was collected by students in the Coastal Biodiversity and Conservation course taught by Dr. Tom Berman with Teaching Assistant Russ Markel July 21-Aug 29, 1997.
Récupéré en direct depuis OpenAlex et désinversé. Les résumés ne sont pas conservés dans cette base de données : les index inversés représentent 8,6 Go des 9,3 Go de texte de la base, et le serveur dispose de 13 Go libres.
Comment cette classification a été obtenuedéplier
Prédiction machine sur la base complète
Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Le volet Gemma est une étiquette directe du modèle pour chaque travail de la base, lue sur la notice réduite au titre. Le volet Codex est un classifieur appris des 10 348 étiquettes directes de Codex et calibré sur les taux pondérés de l'échantillon; les champs sans appui suffisant ne portent aucun appel Codex. Le mode candidate est l'union des deux volets; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont pas des étiquettes humaines.
Scores du classifieur distillé par catégorie (deux têtes)
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,016 | 0,080 |
| Méta-épidémiologie (sens strict) | 0,002 | 0,001 |
| Méta-épidémiologie (sens large) | 0,001 | 0,001 |
| Bibliométrie | 0,005 | 0,007 |
| Études des sciences et des technologies | 0,003 | 0,001 |
| Communication savante | 0,002 | 0,002 |
| Science ouverte | 0,003 | 0,002 |
| Intégrité de la recherche | 0,001 | 0,002 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,208 | 0,095 |
Scores machine (provisoires)
Les deux têtes enseignantes du modèle étudiant, lues sur ce travail. Un score ordonne la base pour la relecture; il n'affirme jamais une catégorie, et le statut de validation accompagne chaque rangée tel quel.
Scores de référence d'un modèle non mature (critères de maturité non atteints, 7 itérations). Un score ordonne; il n'affirme jamais une catégorie.
score_only:v0-immature-baseline · tel quel depuis la passe de notation : score_only signifie que le nombre peut ordonner les travaux, et qu'aucune étiquette de catégorie n'en découleClassification
machine, non validéePrédiction automatique; un appel candidat d’une seule source (Gemma direct ou Codex distillé), pas un consensus.
Le détail, modèle par modèle et score par score, se trouve en fin de page sous « Comment cette classification a été obtenue ».