We report the seasonal and single-diurnal variability of potentially active members of the prokaryote community in coastal surface waters off central Chile and the relationship between nitrifiers and… (More)
Skuas and jaegers (Charadriiformes: Stercorariidae) are seabirds breeding at moderate to high latitudes and some perform extensive post-breeding transequatorial migrations. Most species overwinter… (More)
Trigonometric parallaxes of three planetary nebulae (A21, A29, and He 2-11) have been determined. The method of observation and reduction is brieÑy presented. The results for A21 and A29 are within… (More)
The formation of multi-species feeding flocks (MSFFs) through visual recruitment is considered an important strategy for obtaining food in seabirds and its functionality has been ascribed to enhanced… (More)