9 resultados para Stimmer, Tobias, 1539-1584.

em Aquatic Commons


Relevância:

10.00% 10.00%

Publicador:

Resumo:

pdf contains 220 pages

Relevância:

10.00% 10.00%

Publicador:

Resumo:

La familia de la Compuestas (=Asteraceae) es la más numerosa de todas las fanerógamas con aproximadamente 23000 especies y más de 1500 géneros ampliamente distribuidos en todos los continentes excepto en la Antártida. En la República Argentina es la familia más abundante con 222 géneros nativos y 1490 especies, en tanto que en la provincia de Buenos Aires, las compuestas representan la sexta parte de la flora de plantas vasculares con 113 géneros y 356 especies, de las cuales 55 son adventicias y el resto indígenas. Muchas de las especies de esta familia son utilizadas por el hombre como plantas alimenticias o medicinales. Algunas especies son tóxicas para el ganado. Otras son utilizadas como repelentes de insectos o son perjudiciales por ser malezas invasoras en los campos y competir con las plantas cultivadas.

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Aboriginal peoples in Canada have been mapping aspects of their cultures for more than a generation. Indians, Inuit, Métis, non-status Indians and others have called their maps by different names at various times and places: land use and occupancy; land occupancy and use; traditional use; traditional land use and occupancy; current use; cultural sensitive areas; and so on. I use “land use and occupancy mapping” in a generic sense to include all the above. The term refers to the collection of interview data about traditional use of resources and occupancy of lands by First Nation persons, and the presentation of those data in map form. Think of it as the geography of oral tradition, or as the mapping of cultural and resource geography. (PDF contains 81 pages.)

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Age, size, abundance, and birthdate distributions were compared for larval Atlantic menhaden (Brevoortia tyrannus) collected weekly during their estuarine recruitment seasons in 1989–90, 1990–91, and 1992–93 in lower estuaries near Beaufort, North Carolina, and Tuckerton, New Jersey, to determine the source of these larvae. Larval recruitment in New Jersey extended for 9 months beginning in October but was discontinuous and was punctuated by periods of no catch that were associated with low water temperatures. In North Carolina, recruitment was continuous for 5–6 months beginning in November. Total yearly larval density in North Carolina was higher (15–39×) than in New Jersey for each of the 3 years. Larvae collected in North Carolina generally grew faster than larvae collected in New Jersey and were, on average, older and larger. Birthdate distributions (back-calculated from sagittal otolith ages) overlapped between sites and included many larvae that were spawned in winter. Early spawned (through October) larvae caught in the New Jersey estuary were probably spawned off New Jersey. Larvae spawned later (November–April) and collected in the same estuary were probably from south of Cape Hatteras because only there are winter water temperatures warm enough (≥16°C) to allow spawning and larval development. The percentage contribution of these late-spawned larvae from south of Cape Hatteras were an important, but variable fraction (10% in 1992–93 to 87% in 1989–90) of the total number of larvae recruited to this New Jersey estuary. Thus, this study provides evidence that some B. tyrannus spawned south of Cape Hatteras may reach New Jersey estuarine nurseries.