| Автор | Bird, Michael I. |
| Автор | Boobyer, Ella M. |
| Автор | Bryant, Charlotte |
| Автор | Lewis, Helen A. |
| Автор | Paz, Victor |
| Автор | Stephens, W. Edryd |
| dc.description | ABSTRACTWe present the first record of Holocene and Pleistocene environmental change derived from the chemical and stable-isotope composition of a tropical cave guano sequence from Makangit Cave in northern Palawan (Philippines). The 180 cm sequence of guano, derived predominantly from insectivorous bats and birds, consists of two distinct units. An upper section of reddish-brown oxidised guano to 110 cm was deposited since the mid-Holocene while a lower section of black, reduced guano was deposited through the Last Glacial Maximum (LGM) to >30 000 BP. Carbon-isotope (δ<sup>13</sup>C) values in guano deposited during the LGM are as high as −13·5‰ indicating that a C<sub>4</sub>-dominated grassland existed in the area around the cave at this time. Guano δ<sup>13</sup>C values of − 25‰ to − 28‰ suggest that this open vegetation was replaced by C<sub>3</sub>-dominated closed tropical forest, similar to that of the present, by the mid-Holocene. The results suggest that the climate of northern Palawan was substantially drier at the LGM than is currently the case. |
| Формат | application.pdf |
| Издатель | Royal Society of Edinburgh Scotland Foundation |
| Копирайт | Copyright © Royal Society of Edinburgh 2007 |
| Тема | carbon-isotope |
| Тема | palaeoenvironment |
| Тема | Quaternary |
| Тема | radiocarbon |
| Тема | Sundaland |
| Название | A long record of environmental change from bat guano deposits in Makangit Cave, Palawan, Philippines |
| Тип | research-article |
| DOI | 10.1017/S1755691007000059 |
| Electronic ISSN | 1755-6929 |
| Print ISSN | 1755-6910 |
| Журнал | Earth and Environmental Science Transactions of the Royal Society of Edinburgh |
| Том | 98 |
| Первая страница | 59 |
| Последняя страница | 69 |
| Аффилиация | Bird Michael I.; University of St Andrews |
| Аффилиация | Boobyer Ella M.; University of St Andrews |
| Аффилиация | Bryant Charlotte; NERC Radiocarbon Laboratory |
| Аффилиация | Lewis Helen A.; University of Oxford |
| Аффилиация | Paz Victor; University of the Philippines |
| Аффилиация | Stephens W. Edryd; University of St Andrews |
| Выпуск | 1 |
