South American Rivers
نویسندگان
چکیده
منابع مشابه
Uncertainties in mean discharges from two large South American rivers due to rating curve variability
The uncertainty in mean discharge from two large South American rivers (the Amazonas at Obidos, Brazil, and the Parana at Corrientes, Argentina) resulting from variation in the data used to fit rating curves at the two sites is evaluated. For the Amazonas at Obidos, where mean annual discharge over the 27-year period 19701996 was 164 200 m s'\ uncertainty arising from rating curve variability a...
متن کاملCytogenetics of the Porthole Shovelnose Catfish, Hemisorubim platyrhynchos (Valenciennes, 1840) (Siluriformes, Pimelodidae), a widespread species in South American rivers
Hemisorubim platyrhynchos is a medium- to large-sized pimelodid catfish distributed along several river basins of the Neotropical Region, noteworthy for representing an important fishery source. In this work, Hemisorubim platyrhynchos from three isolated populations were cytogenetically analyzed. The karyotype shows a diploid number of 2n=56 chromosomes comprising 22m, 16sm, 10st, 8a (FN=104). ...
متن کاملRegional Distribution of Rivers and Streams in South America
Contents 1. Introduction 2. Factors determining the development of the hydrographic network and the hydrological regime of rivers during the present period 2.1. Relief 2.2. Climate 2.3. Soils and vegetation 2.4. Economic activity 2.4.1 Water reservoirs 2.4.2 Irrigation 3. Hydrography, hydrological knowledge, river runoff, water use and water availability 3.
متن کاملPresent-day South American climate
Article history: This paper documents the m Received 25 April 2007 Accepted 13 October 2007 Available online 9 September 2008
متن کاملReproduction in South American Camelids
All camelids (including the Bactrian [2 humps] and Dromedary [1 hump] old world camels) have a diploid number of 74 chromosomes. Interbreeding can occur between any of these species, producing fertile offspring. In llama and alpaca are occasionally interbred, producing an animal with longer but coarser fibre length than Alpaca. These are known as Huarizo. Using artificial insemination between o...
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ژورنال
عنوان ژورنال: The Geographical Journal
سال: 1905
ISSN: 0016-7398
DOI: 10.2307/1776363