Biofouling data from underwater surveys of commercial ships in Canada ...
Ship biofouling is a major vector for the introduction and spread of harmful marine species globally. Comprehensive underwater sampling and video recording of ship hulls was conducted to assess biofouling extent (percent cover, total abundance and species richness) on a subset of ships arriving to C...
| Main Authors: | , , |
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| Format: | Dataset |
| Language: | English |
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Dryad
2022
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| Subjects: | |
| Online Access: | https://dx.doi.org/10.5061/dryad.hdr7sqvkb https://datadryad.org/stash/dataset/doi:10.5061/dryad.hdr7sqvkb |
| Summary: | Ship biofouling is a major vector for the introduction and spread of harmful marine species globally. Comprehensive underwater sampling and video recording of ship hulls was conducted to assess biofouling extent (percent cover, total abundance and species richness) on a subset of ships arriving to Canadian waters. The dataset includes underwater biofouling assessments from 53 commercial ships arriving at Halifax, Nova Scotia (20 international ships), Vancouver, British Columbia (20 international ships) during 2007–2009, and Churchill, Manitoba (11 international and 2 domestic ships) in 2010–2011. Potential explanatory variables in the dataset include ship size, typical sailing speed, port residence time, age of antifouling coating system and travel history (number of biogeographic realms visisted, and average, minimum and maximum port latititude). ... : Underwater surveys were conducted by professional divers while ships were stationary in port. Divers surveyed both sides of the hull of each ship from bow to stern and bottom to waterline, although access to the mid-ship section was normally limited by the size of the gap between the hull and the berth bed and wall. The rudder sides, bottom, leading and trailing edges, propeller nose and blades, rope guard, stern tube, sea-chests, bow-thruster tunnel and grating, bulbous bow, stem and main hull were inspected for every ship. Physical samples were collected at each location where growth was observed, whereas a value of zero organisms was recorded in locations where no growth was found. Physical sampling was not random, but aimed to include the highest possible number of organisms and species. Average abundances m^2 and for the whole ship were estimated using percent cover information from random video-transects of the entire hull. Sampling was conducted at each location with 1–3 replicate 20 · 20 cm magnetic ... |
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