DFO Quebec Region Biodiversity of the snow crab trawl survey in the Lower North Shore (2018)

Study Extent

Sampling was done at 61 stations using beam trawl tows at depths of 45-220 m. The survey was carried out between July 1 and July 17, 2018. A fixed station sampling plan was used to cover the study area / Échantillonnage réalisé à 61 stations au moyen de traits de chalut à perche de 45-220 m de profondeur. Le relevé était effectué entre le 1er et le 17 juillet 2018. Un plan d’échantillonnage à stations fixes était utilisé pour couvrir la zone d’étude.

Sampling

The presence of the species in the catch was recorded. A beam trawl 2.8 m wide by about 0.76 m high was used. The codend was lined with a 16 mm stretched mesh net in order to collect small individuals. The width of the trawl and the distance traveled calculated from the start and end positions of the haul are used to determine the area swept per haul. The duration of the tow was approximately 10 minutes, depending on seabed conditions / La présence des espèces dans la capture était enregistrée. Un chalut à perche de 2,8m de largeur par environ 0,76m de hauteur a été utilisé. Le cul du chalut était doublé avec un filet de mailles étirées de 16 mm afin de récolter les petits individus. La largeur du chalut et la distance parcourue calculée à partir des positions de début et de fin de trait sont utilisées pour déterminer la surface balayée par trait de chalut. La durée du trait était d'environ 10 minutes selon l'état du fond.

Quality Control

Selected specimens (principally amphipods and polychaetes) were frozen for laboratory confirmation, with photos posted on iNaturalist.ca of 12 specimens / Des spécimens sélectionnés (principalement des amphipodes et des polychètes) ont été congelés pour confirmation en laboratoire, avec des photos mis sur iNaturalist.ca pour 12 spécimens. The names were validated with World Register of Marine Species (WoRMS) / Les noms ont été validés avec le registre mondial des espèces marines (WoRMS).

Method steps

1. The taxon names were reviewed with corrections applied when judged necessary, as recorded in the field of identificationRemarks / Les noms des taxons ont été revus avec des corrections effectuées quand jugées nécessaires, telles qu'inscrites dans le champs « identificationRemarks »

Megabenthic invertebrates, fishes, and seaweeds were identified to the lowest taxonomic level possible / Les invertébrés mégabenthiques, les poissons et les algues étaient identifiés au niveau taxonomique le plus précis possible.

1. Annelida
   rank: phylum
2. Bryozoa
   rank: phylum
3. Brachiopoda
   rank: phylum
4. Cnidaria
   rank: phylum
5. Ctenophora
   rank: phylum
6. Echinodermata
   rank: phylum
7. Arthropoda
   rank: phylum
8. Nemertea
   rank: phylum
9. Porifera
   rank: phylum
10. Chordata
    rank: phylum
11. Tracheophyta
    rank: phylum
12. Rhodophyta
    rank: phylum
13. Ochorophyta
    rank: phylum
14. Priapulida
    rank: phylum
15. Acanthostepheia malmgreni
    rank: species
16. Actiniaria
    rank: order
17. Admete viridula
    rank: species
18. Agarum clathratum
    rank: species
19. Alaria esculenta
    rank: species
20. Alcyonidium
    rank: genus
21. Ampelisca
    rank: genus
22. Amphipoda
    rank: order
23. Anonyx
    rank: genus
24. Argis dentata
    rank: species
25. Ariadnaria borealis
    rank: species
26. Arrhoges occidentalis
    rank: species
27. Artediellus atlanticus
    rank: species
28. Artediellus uncinatus
    rank: species
29. Ascidiacea
    rank: class
30. Ascophyllum nodosum
    rank: species
31. Aspidophoroides monopterygius
    rank: species
32. Astarte
    rank: genus
33. Asterias rubens
    rank: species
34. Aulacofusus brevicauda
    rank: species
35. Aurelia
    rank: genus
36. Balanidae
    rank: family
37. Bathypolypus bairdii
    rank: species
38. Boltenia ovifera
    rank: species
39. Boreogadus saida
    rank: species
40. Boreotrophon clathratus
    rank: species
41. Botrylloides aureus
    rank: species
42. Buccinum scalariforme
    rank: species
43. Buccinum terraenovae
    rank: species
44. Chionoecetes opilio
    rank: species
45. Chlamys islandica
    rank: species
46. Ciliatocardium ciliatum
    rank: species
47. Crossaster papposus
    rank: species
48. Cryptonatica affinis
    rank: species
49. Ctenodiscus crispatus
    rank: species
50. Cucumaria frondosa
    rank: species
51. Cyclopterus lumpus
    rank: species
52. Dendronotus frondosus
    rank: species
53. Echinarachnius parma
    rank: species
54. Ennucula tenuis
    rank: species
55. Eualus belcheri
    rank: species
56. Eualus fabricii
    rank: species
57. Eualus macilentus
    rank: species
58. Eumesogrammus praecisus
    rank: species
59. Eumicrotremus terraenovae
    rank: species
60. Eusirus cuspidatus
    rank: species
61. Euspira heros
    rank: species
62. Euspira pallida
    rank: species
63. Flabelligeridae
    rank: family
64. Fucus
    rank: genus
65. Gadus morhua
    rank: species
66. Gasterosteus aculeatus
    rank: species
67. Gersemia rubiformis
    rank: species
68. Gorgonocephalus arcticus
    rank: species
69. Gymnelus viridis
    rank: species
70. Gymnocanthus tricuspis
    rank: species
71. Halocynthia pyriformis
    rank: species
72. Hemithiris psittacea
    rank: species
73. Henricia
    rank: genus
74. Hiatella arctica
    rank: species
75. Hippoglossoides platessoides
    rank: species
76. Hyas alutaceus
    rank: species
77. Hyas araneus
    rank: species
78. Hydrozoa
    rank: class
79. Icelus
    rank: genus
80. Icelus spatula
    rank: species
81. Laminariales
    rank: order
82. Lebbeus groenlandicus
    rank: species
83. Lebbeus polaris
    rank: species
84. Leptagonus decagonus
    rank: species
85. Leptasterias polaris
    rank: species
86. Leptoclinus maculatus
    rank: species
87. Liparis bathyarcticus
    rank: species
88. Lucernaria quadricornis
    rank: species
89. Lumbrineridae
    rank: family
90. Lumpenus lampretaeformis
    rank: species
91. Lycodes lavalaei
    rank: species
92. Lyonsia arenosa
    rank: species
93. Macoma calcarea
    rank: species
94. Maldanidae
    rank: family
95. Mallotus villosus
    rank: species
96. Margarites costalis
    rank: species
97. Megamoera dentata
    rank: species
98. Megayoldia thraciaeformis
    rank: species
99. Melitidae
    rank: family
100. Musculus discors
     rank: species
101. Mya truncata
     rank: species
102. Myoxocephalus scorpius
     rank: species
103. Neoleanira tetragona
     rank: species
104. Nephtys
     rank: genus
105. Neptunea despecta
     rank: species
106. Nuculana
     rank: genus
107. Ophiopholis aculeata
     rank: species
108. Ophiura sarsii
     rank: species
109. Pagurus arcuatus
     rank: species
110. Pagurus pubescens
     rank: species
111. Pandalus borealis
     rank: species
112. Pandalus montagui
     rank: species
113. Panomya norvegica
     rank: species
114. Paramphithoe hystrix
     rank: species
115. Pectinariidae
     rank: family
116. Periploma fragile
     rank: species
117. Pherusa
     rank: genus
118. Phyllodocidae
     rank: family
119. Pleurobrachia pileus
     rank: species
120. Plicifusus kroeyeri
     rank: species
121. Polychaeta
     rank: class
122. Polynoidae
     rank: family
123. Polyplacophora
     rank: class
124. Priapulus caudatus
     rank: species
125. Psolus fabricii
     rank: species
126. Psolus phantapus
     rank: species
127. Pteraster militaris
     rank: species
128. Ptiloteae
     rank: tribe
129. Reinhardtius hippoglossoides
     rank: species
130. Rhachotropis aculeata
     rank: species
131. Rossia
     rank: genus
132. Sabinea sarsii
     rank: species
133. Sabinea septemcarinata
     rank: species
134. Sclerocrangon boreas
     rank: species
135. Sebastes
     rank: genus
136. Serripes groenlandicus
     rank: species
137. Solaster endeca
     rank: species
138. Spirontocaris phippsii
     rank: species
139. Spirontocaris spinus
     rank: species
140. Stegocephalus inflatus
     rank: species
141. Stegophiura nodosa
     rank: species
142. Stichaeus punctatus
     rank: species
143. Strongylocentrotus
     rank: genus
144. Styela rustica
     rank: species
145. Synoicum pulmonaria
     rank: species
146. Tachyrhynchus erosus
     rank: species
147. Terebellida
     rank: order
148. Themisto libellula
     rank: species
149. Thuiaria thuja
     rank: species
150. Triglops murrayi
     rank: species
151. Volutopsius norwegicus
     rank: species
152. Wimvadocus torelli
     rank: species
153. Yoldia hyperborea
     rank: species
154. Zostera marina
     rank: species

Lower North Shore of the Gulf of St. Lawrence / Basse-Côte-Nord du golfe du Saint-Laurent.