Mercury partitioning within alluvial sediments of the Carson river valley, Nevada: Implications for sampling strategies in tropical environments

2005 ◽  
pp. 211-233
Author(s):  
Jerry R. Miller ◽  
Paul J. Lechler
Keyword(s):  
River Valley ◽  
Sampling Strategies ◽  
Alluvial Sediments ◽  
Tropical Environments ◽  
Carson River

Effects of the 1997 Flood on the Transport and Storage of Sediment and Mercury within the Carson River Valley, West‐Central Nevada

1999 ◽  
Vol 107 (3) ◽  
pp. 313-327 ◽  
Author(s):  
Jerry Miller ◽  
Robert Barr ◽  
David Grow ◽  
Paul Lechler ◽  
Dorothea Richardson ◽  
...  
Keyword(s):  
River Valley ◽  
West Central ◽  
Carson River ◽  
And Storage

Rapid migration of heavy metals and 137Cs in alluvial sediments, Upper Odra River valley, Poland

2007 ◽  
Vol 55 (7) ◽  
pp. 1577-1586 ◽  
Author(s):  
Dariusz Ciszewski ◽  
Agnieszka Czajka ◽  
Sylwia Błażej
Keyword(s):  
Heavy Metals ◽  
River Valley ◽  
Alluvial Sediments ◽  
Odra River

Changes of chromium concentration in alluvial sediments of the Obra river valley

2006 ◽  
Vol 50 (3) ◽  
pp. 423-429
Author(s):  
Z. Młynarczyk ◽  
T. Sobczyński ◽  
M. Słowik
Keyword(s):  
Chromium Concentration ◽  
River Valley ◽  
Alluvial Sediments

Who owns a personal home page?

2003 ◽  
Vol 62 (2) ◽  
pp. 121-129 ◽  
Author(s):  
Astrid Schütz ◽  
Franz Machilek
Keyword(s):  
Search Engine ◽  
Home Page ◽  
Sampling Strategies ◽  
Home Pages ◽  
Personal Home Pages ◽  
Age And Sex

Research on personal home pages is still rare. Many studies to date are exploratory, and the problem of drawing a sample that reflects the variety of existing home pages has not yet been solved. The present paper discusses sampling strategies and suggests a strategy based on the results retrieved by a search engine. This approach is used to draw a sample of 229 personal home pages that portray private identities. Findings on age and sex of the owners and elements characterizing the sites are reported.

CIRCLING BACK: CHRONICLE OF A TEXAS RIVER VALLEY

1997 ◽  
Vol 16 (1) ◽  
pp. 133-134
Author(s):  
Joanne M. Westphal
Keyword(s):  
River Valley

Globally endangered butterflies (Lepidoptera) protected in the natural reserve «Dniprovsko-Orilsky»

2016 ◽  
Vol 27 (3-4) ◽  
pp. 47-54
Author(s):  
K. K. Holoborodko ◽  
V. O. Makhina ◽  
K. S. Buchnieva ◽  
O. E. Pakhomov
Keyword(s):  
Rare Species ◽  
Geographical Location ◽  
Taxonomic Diversity ◽  
Red List ◽  
River Valley ◽  
Number Of Species ◽  
Natural Reserve ◽  
Western Palearctic ◽  
Mediterranean Origin ◽  
Northern Species

Floodplain valley of the Dnieper river midstream is a unique natural complex, having a great bìogeographical, ecological, environmental, historical and recreational values. In 1990, the Natural reserve «Dniprovsko-Orilsky» was established within the area. The Natural reserve «Dniprovsko-Orilsky» is environmentally protected site within the Dnipropetrovsk region, Dnipropetrovsk oblast, Ukraine. This reserve occupies part of the Dnieper river valley and marshy and reedy banks of Protovch river (existing bed of Oril river). It was created by Regulation of the Council of Ministers of the USSR of 15 September 1990, No. 262, based on common zoological and ornitological Nature reserves «Taromskì plavni» and «Obukhovskie zaplavy». On the territory of the Natural reserve «Dniprovsko-Orilsky», they were registered 32 Lepidoptera species listed in the List of Threatened Species at different categories (5 species in IUCN Red List ; 18 in Red Data Book of Ukraine; 7 in European Red List of plants and animals endangered on a global scale; 31 in Red Book of Dnipropetrovsk oblast). The main scientific materials were author’s collections from area of research and materials of entomological funds, Department of Zoology and Ecology, Oles Honchar Dnipropetrovsk National University (mostly Memorial Collection of V. O. Barsov). Field surveys covered all the ecosystems basic on size and degree of protection. The author’s researches have conducted over the past decade during annual expeditions to the Reserve. Taxonomic structure of the complex is quite diverse, and represented by all the major families of higher millers and rhopalocera, having protectedstatus. In relation to taxonomy, this complex formed by representatives of five superfamilies (Zyganoidea, Noctuoidea, Bombycoidea, Hesperioidea, Papilionoidea) from 11 families (Zygaenidae, Saturniidae, Sphingidae, Noctuidae Arctiidae Hesperiidae, Papilionidae, Pieridae, Nymphalidae, Satyridae, Lycaenidae). High taxonomic diversity can be explained by unique geographical location of the reserve in azonal conditions of the Dnieper river valley. Such location allows to enter different zoogeographic Lepidoptera groups on the reserve territory. Zoogeographic analysis of species protected within the reserve territory selected 7 basic groups. It was found that most of the globally rare species have Mediterranean origin (39 %); species of Palearctic origin are in second place (22 %); Western Palearctic and Ponto-Kazakh types of areas are same of number of species, and come third (11 %); and others come 17 % (European, Euro-Siberian, and Holarctic). This fauna component is specific due to presence of so-called «northern» species that make up 40 % (representatives of Palearctic, Western Palearctic, Euro-Siberian, European and Holarctic groups). Their existence within the reserve territory is only possible due to development of boreal valley ecosystems. High taxonomic diversity can be explained by unique geographical location of the reserve in azonal conditions of the Dnieper river valley. Such location allows to enter different zoogeographic Lepidoptera groups on the reserve territory. Zoogeographic analysis of species protected within the reserve territory selected 7 basic groups. It was found that most of the globally rare species have Mediterranean origin (39 %); species of Palearctic origin are in second place (22 %); Western Palearctic and Ponto-Kazakh types of areas are same of number of species, and come third (11 %); and others come 17 % (European, Euro-Siberian, and Holarctic). This fauna component is specific due to presence of so-called «northern» species that make up 40 % (representatives of Palearctic, Western Palearctic, Euro-Siberian, European and Holarctic groups). Their existence within the reserve territory is only possible due to development of boreal valley ecosystems.

Sign in / Sign up

Export Citation Format

Share Document