geoscience.net logo
+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Exploratory intertidal bivalve surveys in British Columbia - 2002


, : Exploratory intertidal bivalve surveys in British Columbia - 2002. Canadian Manuscript Report of Fisheries and Aquatic Sciences 2733: i-x, 1-199

Results of exploratory intertidal clam surveys carried out in 2002 to assess populations of commercially important clams, exotic varnish clams, Nuttallia obscurata, and native Olympia oysters, Ostrea conchaphila, on selected beaches in British Columbia (B.C.) are presented. These surveys were a continuation of exploratory clam surveys initiated in 1990 to assess intertidal clam resources in the North and Central Coasts. These surveys were expanded to include exploratory work in the South Coast. to map varnish clam dispersal and distribution of native Olympia oysters. Manila clams, Venerupis philippinarum, were found at low densities in Johnstone and Queen Charlotte Straits and Sunderland Channel. One live clam and some dead shells indicated that the species was present in Seymour and Belize Inlets, but at very low population levels. Manila clams were common on most beaches on the west coast of Vancouver Island, with lower densities recorded in Tofino Inlet and north of Brooks Peninsula. Varnish clams were confirmed from Salmon Bay in Johnstone Strait, and were found in Barkley, Clayoquot and Kyuquot Sounds and Ououkinsh and Nasparti Inlets on the west coast of Vancouver Island. None were found north of Brooks Peninsula. Significant populations of Olympia oysters were recorded from Klaskino and Amai Inlets and Port Eliza. Results of the 2002 surveys, as well as previously documented surveys, indicate that extensive populations of Olympia oysters remain relatively rare in B.C. Most beaches with suitable substrate supported populations of native clam species, including littleneck clams, Protothaca staminea, butter clams, Saxidomus gigantea, cockles, Clinocardium nuttallii, and various Macoma species. Relative abundance of each species depended upon the habitat characteristics (tidal elevation, substrate type, exposure, salinity) of individual beaches.

US$29.90


Other references

Harari, Y.; Castro, G.A., 1989: Simulation of parasite-induced gut hypersensitivity: implications for vaccination. Antigenic challenge of jejunum from rats infected with Trichinella spiralis evokes a biphasic pattern of epithelial Cl- secretion, as measured in vitro by electrophysiological methods. Peaks of secretion occur at approximately 1.5 and approximatel...

Koganezawa H., 1990: Virus and graft transmissible diseases apple scar skin and dapple apple. Jones, A L And H S Aldwinckle (Ed ) Compendium Of Apple And Pear Diseases Vi+100p Aps (American Phytopathological Society) Press: St Paul, Minnesota, Usa Illus Paper 76-77

Gironi, M.; Saresella, M.; Rovaris, M.; Vaghi, M.; Nemni, R.; Clerici, M.; Grossi, E., 2013: A novel data mining system points out hidden relationships between immunological markers in multiple sclerosis. Multiple Sclerosis (MS) is a multi-factorial disease, where a single biomarker unlikely can provide comprehensive information. Moreover, due to the non-linearity of biomarkers, traditional statistic is both unsuitable and underpowered to dissect t...

Nauright, L.P., 1987: Toward a comprehensive personnel system: the reward system--Part V. Nursing Management 18(9): 58-60, 62-4

Nartsissov, T.V.; Mokhov, E.M.; Galkin, V.S.; Iankin, A.V., 1987: Surgical tactics in obturating and perforating cancer of the large intestine. Sovetskaia Meditsina: 86-89

Si-Ahmed, K.; Tazerouti, F.; Badjah-Hadj-Ahmed, A.Y.; Aturki, Z.; D'Orazio, G.; Rocco, A.; Fanali, S., 2010: Analysis of hesperetin enantiomers in human urine after ingestion of blood orange juice by using nano-liquid chromatography. Hesperetin (HT) is a flavanone abundantly found in citrus fruits. It has been reported that HT possesses significant antioxidant, anticancer, anti-inflammatory and analgesic activities. This explains the necessity of developing new methods more po...

Samu, F.; Sziranyi, A.; Kiss, B., 2003: Foraging in agricultural fields: local 'sit-and-move' strategy scales up to risk-averse habitat use in a wolf spider. By making field observations on the movement pattern of the agrobiont wolf spider Pardosa agrestis at two spatiotemporal scales, we explored how fine-scale foraging movements scale up to medium-scale habitat use by the spiders. For fine-scale obse...

Baek InYoul; Han WonYoung; Shin DooChull; Kang SungTaek; Chung MyungGeun; Kim HyunTae; K.J.ngMin; Kang NamSuk; O.K.Won; O.S.aKwan; Shin SangOok; Park KeumYong; Suh DuckYong; Yun HongTae; O.Y.ungJin; Choi JaeKeun; Lee SeongSu; Son ChangKi; Kim YongDuck; Kim HoYeong; Lee SeongHee, 2006: A new black soybean cultivar, Ilpumgeumjeong 2 with good seed quality and high yield. Ilpumgeumjeong 2, a new black seed coated soyabean cultivar, was developed in Korea Republic in 2005. Ilpumgeumjeong 2 was selected from the cross between cultivars Milyang 68 and Suwon 178. The preliminary, advanced and regional yield trials for...

Curcio, G.; Granata, A.; Ligresti, D.; Tarantino, I.; Barresi, L.; Traina, M., 2015: Buried bumper syndrome treated with HybridKnife endoscopic submucosal dissection. Gastrointestinal Endoscopy 80(5): 916-917

Scotto L.M.ssene, C.; Vassy, R.; Zaouchi, H., 1975: Influence de trois porte-greffe sur la production et l'infestation par Tylenchulus semipenetrans de deux varietes de citrus en Algerie. Nematologia Mediterranea, 31: 29-34