during the development of the Baltic Sea after the last Ice Age, the basins of Paajarvi and Vanern were both parts of the Yoldia
Sea stage (10300-9500 years BP; Bjorck 1995), the water of which was fresh for most of the time.
Size-dependent survivorship of the bivalve Yoldia
notabilis (Yokoyama, 1920): the effect of crab predation.
Water level in the former Baltic Sea basins (Yoldia
Sea or Ancylus Lake) during the formation of the terraces was a few tens of metres lower than the recent one (Veski et al.
40 3 0 Truncatella scalaris 2 0 0 Turbonilla elegans 7 0 0 Turbonilla pusilla 81 40 14 Turbonilla sp1 8 3 1 Turbonilla sp2 2 4 0 Turbonilla sp3 24 0 0 Verticordia ornata 1 0 0 Vitrinella filifera 120 14 0 Vitrinellidae 1 331 54 0 Vitrinellidae 2 290 17 0 Yoldia
crosbyana 63 21 1 Total 16841 2659 214 Tabla 2.
The test site is located in Northern Jutland on the outskirts of Aalborg (Grinsted), Denmark on a marine plain formed during the Yoldia
transgression period, in connection with the ice retreat from Northern Jutland (approximately 13,000-9,000 years B.C).
Such oligomeric forms are the hemocyanin of bivalve, Yoldia
thraciaeformis and keyhole limpet, Megathura crenulata (Gebauer et al., 1994; Swerdlow et al., 1996; Harris and Markl, 1999; Markl et al., 2001).
The effect of a seasonal pulse of sinking phytodetritus on two benthic deposit-feeding species, Yoldia
hyperborea and Ctenodiscus crispatus.
deposit-feeder X X Turtonia minuta suspension X X (Fabricius) Yoldia
hyperborea deposit-feeder X X X X (Gould) Gastropoda Lacuna vincta herbivore X X (Montagu) Odosiomia sp.
Radiocarbon ages of the organic deposits formed during Yoldia
regression and Ancylus transgression (73 dates) vary significantly: from 8440 [+ or -] 70 (TA-263) to 9980 [+ or -] 120 (Tln-2349) at Joelahtme (Appendix 1).
Age determination and growth analysis based on external shell rings of the protobranch bivalve Yoldia
notabilis Yokoyama in Otsuchi Bay, Northeastern Japan.
In parallel studies, we tested for correlations between sulfide and free amino acid levels in two sulfide-tolerant, nonsymbiotic bivalve species: the estuarine mussel Geukensia demissa and the protobranch bivalve Yoldia
limatula, a group of suspension-feeding marine clams, and Nereis diversicolor, a predatory marine polychaete will be added to sediment microcosms and a series of scans performed to determine how the infauna alters porosity.