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Udalov, A A; Burkovskii, I V; Stolyarov, A P (2000): (Table 1) Mean sizes of Hydrobia ulvae juveniles in the littoral zone of the Chernaya Inlet (Kandalaksha Bay, White Sea) in July-September 1995. PANGAEA,, Supplement to: Udalov, AA et al. (2000): Biology and formation of the population of the mudsnail Hydrobia ulvae in the White Sea silty-sandy littoral zone. Translated from Okeanologiya, 2000, 40(1), 56-64, Oceanology, 40(1), 50-58

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Based on observations and experiments carried out within the White Sea silty-sandy littoral zone in 1994-1997 data on biology of development and behavior of Hydrobia ulvae juveniles over water column and in sediments were obtained. Hydrobiid juveniles 0.125-0.150 mm in size appear in plankton during the second half of June and in two to three weeks they precipitate on sediments reaching 0.300-0.350 mm in size. Specific biological features of the White Sea hydrobiids are a short reproductive period and a short period of juvenile growth related to long under-ice time and decelerated warming of shallow waters. Distribution of juvenile individuals of H. ulvae is primarily determined by hydrodynamics and microtopography of the littoral zone. Redistribution of the juveniles permanently takes place, since all size groups of the juveniles are equally subjected to migration. During the first few weeks after settling mortality of juvenile mudsnails is 85%.
Median Latitude: 66.522300 * Median Longitude: 32.978350 * South-bound Latitude: 66.521300 * West-bound Longitude: 32.976300 * North-bound Latitude: 66.523300 * East-bound Longitude: 32.980500
Minimum DEPTH, sediment/rock: 0.005 m * Maximum DEPTH, sediment/rock: 0.005 m
UBS-95-0 * Latitude: 66.521300 * Longitude: 32.980500 * Location: White Sea
UBS-95-1 * Latitude: 66.522000 * Longitude: 32.978900
UBS-95-2 * Latitude: 66.522600 * Longitude: 32.977700
#NameShort NameUnitPrincipal InvestigatorMethodComment
1Event labelEvent
2Latitude of eventLatitude
3Longitude of eventLongitude
4DateDateUdalov, A A
5DEPTH, sediment/rockDepthmGeocode
6Depth, top/minDepth topmUdalov, A A
7Depth, bottom/maxDepth botmUdalov, A A
8Hydrobia ulvae, sizeH. ulvae sizemmUdalov, A ABinocular microscope
112 data points

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