Germination of Potentilla norvegica L. (rough cinquefoil) seeds stimulated by fluorescent irradiations of nearly 24 hours was inhibited by ethylene at <1 microliter per liter. Sensitivity to ethylene inhibition was highest during and immediately after the irradiation. By delaying ethylene treatment until about a day after the light potentiation, seeds escaped the inhibition. Ethylene inhibition...

Diverse and extremely well-preserved assemblages of planktonic foraminifera were recovered from three drill holes through the Eocene/Oligocene boundary in southern Tanzania (Tanzania Drilling Project Sites 11, 12, and 17). The excellent state of preservation of the tests permits detailed investigation of wall textures and surface ornamentation, helping us to elucidate details of functional morp...

Zooplankton consumption of aggregates, such as marine snow, is an important factor in determining the efficiency biological carbon pump. However, feeding rates aggregate-associated small harpacticoid and poecilostomatoid copepods are largely unknown, factors that influence these rates. We measured functional responses pellet production (PP) aggregate-feeding on appendicularian houses, algal det...

Moss crusts play important roles in biological soil crusts biomass and soil surface stabilization. However, because of increasingly intensive human activities, especially grazing, the growth and survival of shrubs are seriously threatened. This study aimed to test whether the presence of shrubs affects the physiological state of the bryophyte Syntrichia caninervis Mitt. in this desert ecosystem...