Effectiveness of conservation measures for diminished populations depends on the mechanism producing low abundance. In queen conch, which is heavily exploited, reproductive activity is depressed where conch density is low, which may be due to the Allee effect, poor habitat quality, or delayed functional maturity. To determine the mechanism underlying impaired reproduction in shallow seagrass be...

Abstract. This second part of a numerical study on shallow-cumulus dilution focuses the sensitivity cloud to changes in vertical wind profile. Insights are obtained through large-eddy simulations maritime and continental fields. In these simulations, speed initially uniform geostrophic strength shear subcloud layer varied. Increases cloud-layer (up 9 ms-1km-1) lead 40 %–50 % larger cloud-core r...

We examined δC values of shallow and deep-water scallop shells as well as δC of dissolved inorganic carbon (DIC) from the Bay of Brest in western Brittany. Time series of shell calcite δC do not reflect seasonal variation in seawater δC, but rather show a consistent pattern of decreasing δC with age, suggesting a metabolic effect rather than direct environmental control. This δC trend reflects ...

DQ Herculis (Nova Herculis 1934) is a deeply eclipsing cataclysmic variable containing a magnetic white dwarf primary. The accretion disk is thought to block our line of sight to the white dwarf at all orbital phases due to its extreme inclination angle. Nevertheless, soft X-rays were detected from DQ Her with ROSAT PSPC. To probe the origin of these soft X-rays, we have performed Chandra ACIS ...

Wediscuss the reference time t0 of afterglow light curves in the context of the standard internal-external shockmodel. The decay index of early afterglow is very sensitive to the reference time one chooses. In order to understand the nature of early afterglow, it is essential to take a correct reference time. Our simple analytic model provides a framework for understanding special relativistic ...

DQ Herculis (Nova Herculis 1934) is a deeply eclipsing cataclysmic variable containing a magnetic white dwarf primary. The accretion disk is thought to block our line of sight to the white dwarf at all orbital phases because of its extreme inclination angle. Nevertheless, soft X-rays were detected from DQ Her with the ROSAT PSPC. To probe the origin of these soft X-rays, we have performedChandr...