998 resultados para Tostes, Celeida, 1929-1995


Relevância:

20.00% 20.00%

Publicador:

Relevância:

20.00% 20.00%

Publicador:

Relevância:

20.00% 20.00%

Publicador:

Resumo:

The diet of Pacific cod (Gadus macrocephalus) in the area of Pavlof Bay, Alaska, was studied in the early 1980s by Albers and Anderson (1985). They found that the dominant prey species were forage species like pandalid shrimp, capelin (Mallotus villosus), and walleye pollock (Theragra chalcogramma). The shrimp fishery in Pavlof Bay began in 1968 and closed in 1980 because of low shrimp abundance (Ruccio and Worton1). Survey data indicate that, during the period between 1972 and 1997, the abundance of forage species such as pandalid shrimp and capelin declined and higher trophic-level groundfish such as Pacific cod increased. There is a general recognition that a long-term ocean climate shift in the Gulf of Alaska has been partially responsible for the observed reorganization of the community structure (Anderson and Piatt, 1999).

Relevância:

20.00% 20.00%

Publicador:

Resumo:

From 1987 through 1992, California endured 6 consecutive years of drought for the second time this century. The drought was broken in most parts of the state by a wet year in 1993, in which runoff was 125 percent of average. But 1994 was again critically dry, with runoff only 40 percent of average statewide, raising fears that the drought had resumed. The "drought watch" of 1994 was finally washed out to sea by two large floods (January and March), which made 1995 one of the wettest years this century and refilled all but a couple of California's major reservoirs. This paper provides information on water conditions and flooding in 1995 and some comparisons with previous years.

Relevância:

20.00% 20.00%

Publicador:

Resumo:

The appendices include the workshop agenda, a list of poster presentations, and a list of attendees.