Ecological separation among browsing ungulates in Tsavo East National Park, Kenya

Oecologia ◽  
1978 ◽  
Vol 35 (2) ◽  
pp. 241-252 ◽  
Author(s):  
Walter Leuthold
Keyword(s):  
National Park ◽  
Ecological Separation

Scent-marking behavior of sympatric wolves (Canis lupus) and coyotes (C. latrans) in Riding Mountain National Park

1991 ◽  
Vol 69 (7) ◽  
pp. 1721-1727 ◽  
Author(s):  
Paul C. Paquet
Keyword(s):  
Canis Lupus ◽  
National Park ◽  
Scent Marking ◽  
Scent Marks ◽  
Riding Mountain National Park ◽  
Ecological Separation

The objectives of this study were to describe the scent-marking behavior of sympatric wolves and coyotes, and determine whether scent marking has an interspecific behavioral significance and, if so, whether it is involved in maintaining ecological separation of the two species. The hypotheses tested were that coyotes travelling within active wolf areas reduce their frequency of marking and avoid wolf scent marks, and that wolves react to sympatric coyotes as transgressing conspecifics, and increase their scent marking. Marking by the two species was similar, both canids using the same scent mounds. Coyotes did not avoid areas marked by wolves, nor did they minimize evidence of their own activity. Coyotes increased their marking significantly in response to wolves. Wolves, however, did not respond to marks by coyotes.

Ultrastructural Localization of Phycocyanin in the Acidophilic, Thermophilic Alga, Cyanidium Caldarium

1973 ◽  
Vol 31 ◽  
pp. 462-463
Author(s):  
M. R. Edwards ◽  
J. D. Mainwaring
Keyword(s):  
Yellowstone National Park ◽  
National Park ◽  
Ultrastructural Localization ◽  
Review Of Literature ◽  
Cyanidium Caldarium ◽  
Taxonomic Rank ◽  
Thin Sections ◽  
Standard Methods ◽  
Laboratory Cultures

Although the general ultrastructure of Cyanidium caldarium, an acidophilic, thermophilic alga of questionable taxonomic rank, has been extensively studied (see review of literature in reference 1), some peculiar ultrastructural features of the chloroplast of this alga have not been noted by other investigators.Cells were collected and prepared for thin sections at the Yellowstone National Park and were also grown in laboratory cultures (45-52°C; pH 2-5). Fixation (glutaraldehyde-osmium), dehydration (ethanol), and embedding (Epon 812) were accomplished by standard methods. Replicas of frozenfracture d- etched cells were obtained in a Balzers apparatus. In addition, cells were examined after disruption in a French Press.

Evaluation of national park soundscapes based on aircraft type

2011 ◽  
Author(s):  
Levi Zitting ◽  
Britton Mace ◽  
Grant Corser
Keyword(s):  
National Park ◽  
Aircraft Type

Philanthropy and the National Park Service

2013 ◽  
Author(s):  
Jacqueline Vaughn ◽  
Hanna J. Cortner
Keyword(s):  
National Park ◽  
National Park Service ◽  
Park Service
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