Lobster Density and Size Measurements from Southern Gulf SCUBA Transects
Updated 3mo ago
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Description
Fisheries and Oceans Canada collected data on lobster density and structure via SCUBA surveys in the Southern Gulf. The dataset includes total transects surveyed and total lobsters measured per site per year, with parameters for size measurement, species counts, and substrate assessment. Data collection employed a strip transect method where divers sampled alongside a 100-meter leaded rope.
Use Cases
Model lobster population density trends by site and year using total transects and total lobsters measured.
Analyze carapace length and sex distribution for lobsters ≥20 mm to study growth and demographics.
Assess habitat suitability by correlating substrate types (rocky reefs, sand, boulders) with lobster counts.
Map survey effort and lobster presence using site coordinates, excluding sites without coordinate data.
Strengths
Data collected by a national government agency, Fisheries and Oceans Canada, ensuring authoritative sourcing.
Parameters include biological (size), ecological (species counts), and geological (substrate) measurements for multi-faceted analysis.
Standardized strip transect survey method using a 100-meter rope marked at 5-meter intervals for consistent data collection.
Limitations
Some surveyed sites lack coordinate data, limiting spatial analysis and mapping for those locations.
Sample size and temporal coverage are unspecified, preventing assessment of dataset scale and time range.
Data use requires contacting the custodian, which may delay access and analysis.
Provenance
Source
Fisheries and Oceans Canada
Collection Method
SCUBA-based strip transect surveys using a 100-meter leaded rope; divers measured carapace length and sexed lobsters ≥20 mm, while assessing habitat complexity in 5-meter sections.
Time Range
null
Freshness
Last updated March 2026, indicating recent maintenance.
Geography
Southern Gulf, nearshore rocky reef habitats.
License is ca-ogl-lgo; users are encouraged to contact the data custodian prior to use to ensure scientific integrity and appropriate application.
Related Topics
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Quality Score
C52
Description
47
Source
59
Reputation
35
Access
70
Community
0 views
Dataset Info
License
OGL-CA-2.0
Org
Fisheries and Oceans Canada | Pêches et Océans Canada
Files
4
Created
Jun 10, 2022
Updated
Mar 24, 2026
Access
70
Community
0 views
Dataset Info
License
OGL-CA-2.0
Org
Fisheries and Oceans Canada | Pêches et Océans Canada