The Influence of Feral Goats on Koa Tree Reproduction in Hawaii Volcanoes National Park

Gunter Spatz; Dieter Mueller-Dombois

doi:10.2307/1935682

The Influence of Feral Goats on Koa Tree Reproduction in Hawaii Volcanoes National Park

Ecology ◽

10.2307/1935682 ◽

1973 ◽

Vol 54 (4) ◽

pp. 870-876 ◽

Cited By ~ 23

Author(s):

Gunter Spatz ◽

Dieter Mueller-Dombois

Keyword(s):

National Park ◽

Tree Reproduction

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Long-term collapse in fruit availability threatens Central African forest megafauna

Science ◽

10.1126/science.abc7791 ◽

2020 ◽

Vol 370 (6521) ◽

pp. 1219-1222

Author(s):

Emma R. Bush ◽

Robin C. Whytock ◽

Laila Bahaa-el-din ◽

Stéphanie Bourgeois ◽

Nils Bunnefeld ◽

...

Keyword(s):

Food Availability ◽

Body Condition ◽

National Park ◽

Fruit Availability ◽

Forest Elephants ◽

Lope National Park ◽

Tree Reproduction

Afrotropical forests host much of the world’s remaining megafauna, although these animals are confined to areas where direct human influences are low. We used a rare long-term dataset of tree reproduction and a photographic database of forest elephants to assess food availability and body condition of an emblematic megafauna species at Lopé National Park, Gabon. Our analysis reveals an 81% decline in fruiting over a 32-year period (1986–2018) and an 11% decline in body condition of fruit-dependent forest elephants from 2008 to 2018. Fruit famine in one of the last strongholds for African forest elephants should raise concern about the ability of this species and other fruit-dependent megafauna to persist in the long term, with potential consequences for broader ecosystem and biosphere functioning.

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

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100072757 ◽

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.

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