The purpose of this investigation was to examine the temporal and environmental (e.g. temperature, tide height) patterns in the presence and abundance of resident and migratory fishes, as observed in the fish catches at two Minas Basin intertidal weirs during April – August 2013. Sampling was conducted weekly during daytime low tides from weirs in Bramber, NS and Five Islands, NS. Diel patterns were examined during two one-week periods during late July and early August at the Bramber site. Pelagic fishes, especially those of the Clupeidae family, dominated the catches at both weirs. Harbour porpoise presence near intertidal weirs was low during summer, especially on the north shore.
Day/night sampling was conducted on 14 consecutive low tides during 12-19 July at Bramber. \nOverall, the study showed that intertidal weirs are useful sampling platforms for assessing general patterns in the presence and abundance of fishes in Minas Basin and can strengthen on-going environmental monitoring near tidal energy development sites.\n\nThe purpose of the study was to examine fish catches in intertidal weirs in Minas Basin as a possible analogue for patterns in the abundance of fishes that travel though the Minas Passage and FORCE test area to spawning rivers or to feed in Minas Basin during the spring and summer months. Fish data of interest include species identification, size, and approximate abundance in weir catches during April to September 2013. Weir catch data can be used to examine temporal patterns in the presence and abundance of resident and migratory fishes.
","language":"eng","citation":{"text":"Redden A, OBIS Canada (2017). ACER: Temporal patterns in Minas Basin intertidal weir fish catches. Canadian node of the Ocean Biogeographic Information System (OBIS Canada). Occurrence dataset https://doi.org/10.15468/4k375m accessed via GBIF.org on 2026-10-11.","citationProvidedBySource":false},"contactsCitation":[{"key":6911903,"abbreviatedName":"Redden A","firstName":"Anna","lastName":"Redden","roles":["ORIGINATOR"],"userId":[]},{"key":6911904,"abbreviatedName":"OBIS Canada","lastName":"OBIS Canada","roles":["METADATA_AUTHOR"],"userId":[]}],"lockedForAutoUpdate":false,"createdBy":"09a9c196-cb5b-4fa1-afc2-3499b868b225","modifiedBy":"crawler.gbif.org","created":"2026-02-13T17:55:35.436+00:00","modified":"2026-02-13T17:56:36.164+00:00","contacts":[{"key":6911903,"type":"ORIGINATOR","primary":true,"userId":[],"firstName":"Anna","lastName":"Redden","position":["primary investigator"],"email":["anna.redden@acadiau.ca"],"phone":[],"homepage":[],"organization":"Acadia University – Acadia Centre for Estuarine Research (ACER)","address":[],"city":"Wolfville","province":"Nova Scotia","country":"CA","createdBy":"crawler.gbif.org","modifiedBy":"crawler.gbif.org","created":"2026-02-13T17:56:36.142+00:00","modified":"2026-02-13T17:56:36.142+00:00"},{"key":6911904,"type":"METADATA_AUTHOR","primary":true,"userId":[],"lastName":"OBIS Canada","position":["data management team"],"email":["mary.kennedy@dfo-mpo.gc.ca"],"phone":[],"homepage":[],"organization":"Fisheries and Oceans Canada","address":["Bedford Institute of Oceanography"],"city":"Dartmouth","province":"Nova Scotia","country":"CA","postalCode":"B2Y 4A2","createdBy":"crawler.gbif.org","modifiedBy":"crawler.gbif.org","created":"2026-02-13T17:56:36.145+00:00","modified":"2026-02-13T17:56:36.145+00:00"},{"key":6911905,"type":"PUBLISHER","primary":false,"userId":[],"lastName":"OBIS Canada","position":["data management team"],"email":["mary.kennedy@dfo-mpo.gc.ca"],"phone":[],"homepage":[],"organization":"Fisheries and Oceans Canada","address":["Bedford Institute of Oceanography"],"city":"Dartmouth","province":"Nova Scotia","country":"CA","createdBy":"crawler.gbif.org","modifiedBy":"crawler.gbif.org","created":"2026-02-13T17:56:36.146+00:00","modified":"2026-02-13T17:56:36.146+00:00"},{"key":6911906,"type":"ADMINISTRATIVE_POINT_OF_CONTACT","primary":true,"userId":[],"lastName":"OBIS Canada","position":["data management team"],"email":["mary.kennedy@dfo-mpo.gc.ca"],"phone":[],"homepage":[],"organization":"Fisheries and Oceans Canada","address":["Bedford Institute of Oceanography"],"city":"Dartmouth","province":"Nova Scotia","country":"CA","postalCode":"B2Y 4A2","createdBy":"crawler.gbif.org","modifiedBy":"crawler.gbif.org","created":"2026-02-13T17:56:36.147+00:00","modified":"2026-02-13T17:56:36.147+00:00"}],"endpoints":[{"key":1242799,"type":"DWC_ARCHIVE","url":"https://ipt.iobis.org/obiscanada/archive.do?r=acer_minasbasin_intertidalweirs","createdBy":"09a9c196-cb5b-4fa1-afc2-3499b868b225","modifiedBy":"09a9c196-cb5b-4fa1-afc2-3499b868b225","created":"2026-02-13T17:55:35.610+00:00","modified":"2026-02-13T17:55:35.610+00:00","machineTags":[]},{"key":1242798,"type":"EML","url":"https://ipt.iobis.org/obiscanada/eml.do?r=acer_minasbasin_intertidalweirs","createdBy":"09a9c196-cb5b-4fa1-afc2-3499b868b225","modifiedBy":"09a9c196-cb5b-4fa1-afc2-3499b868b225","created":"2026-02-13T17:55:35.578+00:00","modified":"2026-02-13T17:55:35.578+00:00","machineTags":[]}],"machineTags":[{"key":33014371,"namespace":"crawler.gbif.org","name":"crawl_attempt","value":"29","createdBy":"crawler.gbif.org","created":"2026-10-05T01:08:11.457+00:00"}],"tags":[],"identifiers":[{"key":463578,"type":"URL","identifier":"http://ipt.iobis.org/obiscanada/resource?r=acer_minasbasin_intertidalweirs","createdBy":"crawler.gbif.org","created":"2026-02-13T17:56:36.149+00:00","primary":false}],"comments":[],"bibliographicCitations":[{"text":"Baker, M., Reed, M. and Redden, A. M. (2014) Temporal Patterns in Minas Basin Intertidal Weir Fish Catches and Presence of Harbour Porpoise during April - August 2013. ACER Technical Report No. 120","citationProvidedBySource":false}],"curatorialUnits":[],"taxonomicCoverages":[{"description":"All Atlantic marine fish species caught in both intertidal weirs in Five Islands, NS, and Bramber, NS.","coverages":[{"scientificName":"Hemitripterus americanus","commonName":"Sea Raven","rank":{"verbatim":"species","interpreted":"SPECIES"}},{"scientificName":"Osmerus mordax","commonName":"Smelt","rank":{"verbatim":"species","interpreted":"SPECIES"}},{"scientificName":"Alosa","commonName":"Gaspereau","rank":{"verbatim":"genus","interpreted":"GENUS"}},{"scientificName":"Clupea harengus","commonName":"Herring","rank":{"verbatim":"species","interpreted":"SPECIES"}},{"scientificName":"Pseudopleuronectes americanus","commonName":"Winter Flounder","rank":{"verbatim":"species","interpreted":"SPECIES"}},{"scientificName":"Microgadus tomcod","commonName":"Tomcod","rank":{"verbatim":"species","interpreted":"SPECIES"}},{"scientificName":"Morone saxatilis","commonName":"Striped Bass","rank":{"verbatim":"species","interpreted":"SPECIES"}},{"scientificName":"Raja ocellata","commonName":"Winter Skate","rank":{"verbatim":"species","interpreted":"SPECIES"}},{"scientificName":"Scophthalmus aquosus","commonName":"Windowpane","rank":{"verbatim":"species","interpreted":"SPECIES"}},{"scientificName":"Scophthalmus aquosus","commonName":"Longhorn Sculpin","rank":{"verbatim":"species","interpreted":"SPECIES"}},{"scientificName":"Alosa sapidissima","commonName":"American Shad","rank":{"verbatim":"species","interpreted":"SPECIES"}},{"scientificName":"Urophycis","commonName":"Hake","rank":{"verbatim":"genus","interpreted":"GENUS"}},{"scientificName":"Liopsetta putnami","commonName":"Smooth Flounder","rank":{"verbatim":"species","interpreted":"SPECIES"}},{"scientificName":"Salvelinus fontinalis","commonName":"Brook Trout","rank":{"verbatim":"species","interpreted":"SPECIES"}},{"scientificName":"Alosa aestivalis","commonName":"Blueback Herring","rank":{"verbatim":"species","interpreted":"SPECIES"}},{"scientificName":"Acipenser oxyrinchus","commonName":"Atlantic Sturgeon","rank":{"verbatim":"species","interpreted":"SPECIES"}},{"scientificName":"Peprilus triacanthus","commonName":"Butterfish","rank":{"verbatim":"species","interpreted":"SPECIES"}},{"scientificName":"Scomber scombrus","commonName":"Atlantic Mackerel","rank":{"verbatim":"species","interpreted":"SPECIES"}},{"scientificName":"Merluccius bilinearis","commonName":"Silver Hake","rank":{"verbatim":"species","interpreted":"SPECIES"}},{"scientificName":"Squalus acanthias","commonName":"Spiny Dogfish","rank":{"verbatim":"species","interpreted":"SPECIES"}},{"scientificName":"Petromyzon marinus","commonName":"Lamprey","rank":{"verbatim":"species","interpreted":"SPECIES"}},{"scientificName":"Tautogolabrus adspersus","commonName":"Cunner","rank":{"verbatim":"species","interpreted":"SPECIES"}},{"scientificName":"Morone americana","commonName":"White Perch","rank":{"verbatim":"species","interpreted":"SPECIES"}},{"scientificName":"Lophius americanus","commonName":"Monkfish","rank":{"verbatim":"species","interpreted":"SPECIES"}},{"scientificName":"Alosa pseudoharengus","commonName":"Alewife","rank":{"verbatim":"species","interpreted":"SPECIES"}},{"scientificName":"Salmo trutta","commonName":"Brown Trout","rank":{"verbatim":"species","interpreted":"SPECIES"}},{"scientificName":"Urophycis chuss","commonName":"Red Hake","rank":{"verbatim":"species","interpreted":"SPECIES"}},{"scientificName":"Pollachius virens","commonName":"Pollock","rank":{"verbatim":"species","interpreted":"SPECIES"}},{"scientificName":"Syngnathus fuscus","commonName":"Northern Pipefish","rank":{"verbatim":"species","interpreted":"SPECIES"}},{"scientificName":"Alosa sapidissima","commonName":"Shad","rank":{"verbatim":"species","interpreted":"SPECIES"}},{"scientificName":"Anguilla rostrata","commonName":"American Eel","rank":{"verbatim":"species","interpreted":"SPECIES"}}]}],"geographicCoverages":[{"description":"Sampling weirs were studied on both the northern (Five Islands, NS) and southern (Bramber, NS) shores of the Minas Basin.","boundingBox":{"minLatitude":45.182,"maxLatitude":45.399,"minLongitude":-64.175,"maxLongitude":-64.106,"globalCoverage":false}}],"temporalCoverages":[{"@type":"range","start":"2013-04-04T00:00:00.000+00:00","end":"2013-08-12T00:00:00.000+00:00"}],"keywordCollections":[{"thesaurus":"GBIF Dataset Type Vocabulary: http://rs.gbif.org/vocabulary/gbif/dataset_type.xml","keywords":["Occurrence"]},{"thesaurus":"GBIF Dataset Subtype Vocabulary: http://rs.gbif.org/vocabulary/gbif/dataset_subtype.xml","keywords":["Observation"]}],"samplingDescription":{"studyExtent":"Intertidal weir catches were sampled during daytime low tides. Sampling conducted during daylight (hours between sunrise and sunset). Two intertidal weirs were examined, one located at Five Islands, NS, and the other near Bramber, NS.","sampling":"The main objectives of the weir study were:\n1. To determine the temporal patterns in fish presence and abundance within intertidal weir catches at selected weirs on the north and south shores of the Minas Basin;\n2. To describe the observed relationships between fish abundance in weir catches and relevant environmental factors, including water temperature, depth of the water column or high tide height, and the presence of predators, specifically harbour porpoise.\n\nIntertidal weirs were created by driving wooden stakes deep into the intertidal mudflat and attaching mesh wiring between each stake. The weirs are created in shapes that direct the movement of fish to the \"mouth\" of the weir, so they could be captured. Fish were then collected from pools located at the mouth of each weir, twice daily, during low tide. Fish were retrieved from the pools using a seine or a dip-net.","qualityControl":"Scientific names associated with resource occurrence records have been mapped to recognized standards - marine taxa have been mapped to the World Register of Marine Species (WoRMS). The WoRMS codes, the AphiaIDs have been included as LSIDs in the occurrence record DwC field scientificNameID. \nLatitude and longitude coordinates were plotted and locations confirmed to be within the sampling area.","methodSteps":["This resource was created by Acadia University in collaboration with the OBIS Canada data management team and the Atlantic Coastal Zone Information Steering Committee (ACZISC) as part of the Atlantic Ecosystem Initiative (AEI) funded project “Atlantic Canada’s Biological Data for Ecosystem Planning and Decision-making” (2016-2017). Acknowledgements: Thanks to Acadia University, Dr. Anna Redden, Dr. Glenys Gibson and Amy Prescott for assisting with the ACZISC-AEI project."]},"countryCoverage":[],"collections":[],"dataDescriptions":[],"dataLanguage":"eng","additionalInfo":"marine, harvested by iOBIS","pubDate":"2017-02-11T00:00:00.000+00:00","maintenanceUpdateFrequency":"UNKOWN","maintenanceDescription":"","license":"http://creativecommons.org/licenses/by/4.0/legalcode","dwca":{"coreType":"http://rs.tdwg.org/dwc/terms/Occurrence","extensions":[],"modified":"2026-07-12T20:01:51.767+00:00"},"approximateCounts":{"occurrenceCount":419}}