Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1029/2006JG000301 |
Robotic ecological mapping: Habitats and the search for life in the Atacama Desert | |
Warren-Rhodes, K.; Weinstein, S.; Piatek, J. L.; Dohm, J.; Hock, A.; Minkley, E.; Pane, D.; Ernst, L. A.; Fisher, G.; Emani, S.; Waggoner, A. S.; Cabrol, N. A.; Wettergreen, D. S.; Grin, E.; Coppin, P.; Diaz, Chong; Moersch, J.; Oril, G. G.; Smith, T.; Stubbs, K.; Thomas, G.; Wagner, M.; Wyatt, M.; Boyle, L. Ng | |
通讯作者 | Warren-Rhodes, K. |
来源期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES
![]() |
ISSN | 0148-0227 |
出版年 | 2007 |
卷号 | 112期号:G4 |
英文摘要 | [ 1] As part of the three-year ’Life in the Atacama’ ( LITA) project, plant and microbial abundance were mapped within three sites in the Atacama Desert, Chile, using an automated robotic rover. On-board fluorescence imaging of six biological signatures ( e. g., chlorophyll, DNA, proteins) was used to assess abundance, based on a percent positive sample rating system and standardized robotic ecological transects. The percent positive rating system scored each sample based on the measured signal strength ( 0 for no signal to 2 for strong signal) for each biological signature relative to the total rating possible. The 2005 field experiment results show that percent positive ratings varied significantly across Site D ( coastal site with fog), with patchy zones of high abundance correlated with orbital and microscale habitat types ( heaved surface crust and gravel bars); alluvial fan habitats generally had lower abundance. Non-random multi-scale biological patchiness also characterized interior desert Sites E and F, with relatively high abundance associated with (paleo) aqueous habitats such as playas. Localized variables, including topography, played an important, albeit complex, role in microbial spatial distribution. Site D biosignature trends correlated with culturable soil bacteria, with MPN ranging from 10-1000 CFU/ g-soil, and chlorophyll ratings accurately mapped lichen/moss abundance ( Site D) and higher plant ( Site F) distributions. Climate also affected biological patchiness, with significant correlation shown between abundance and ( rover) air relative humidity, while lichen patterns were linked to the presence of fog. Rover biological mapping results across sites parallel longitudinal W-E wet/dry/wet Atacama climate trends. Overall, the study highlights the success of targeting of aqueous-associated habitats identifiable from orbital geology and mineralogy. The LITA experience also suggests the terrestrial study of life and its distribution, particularly the fields of landscape ecology and ecohydrology, hold critical lessons for the search for life on other planets. Their applications to robotic sampling strategies on Mars should be further exploited. |
类型 | Article |
语种 | 英语 |
国家 | USA ; Chile |
收录类别 | SCI-E |
WOS记录号 | WOS:000249852700001 |
WOS关键词 | SOIL-MOISTURE ; VEGETATION ; CHILE ; ECOHYDROLOGY ; DYNAMICS ; CLIMATE ; SCALES |
WOS类目 | Environmental Sciences ; Geosciences, Multidisciplinary |
WOS研究方向 | Environmental Sciences & Ecology ; Geology |
来源机构 | University of Arizona ; University of California, Los Angeles |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/155064 |
作者单位 | (1)NASA, Ames Res Ctr, Moffett Field, CA 94035 USA;(2)Carnegie Mellon Univ, Inst Robot, Pittsburgh, PA 15213 USA;(3)Univ Iowa, Dept Mech & Ind Engn, Iowa City, IA 52242 USA;(4)Univ Calif Los Angeles, Dept Earth & Space Sci, Los Angeles, CA 90095 USA;(5)Univ Arizona, Dept Hydrol & Water Resources, Tucson, AZ 85721 USA;(6)SETI Inst, Mountain View, CA 94043 USA;(7)Carnegie Mellon Univ, Mol Biosensor & Imaging Ctr, Pittsburgh, PA 15213 USA;(8)Univ Catolica Norte, Antofagasta, Chile |
推荐引用方式 GB/T 7714 | Warren-Rhodes, K.,Weinstein, S.,Piatek, J. L.,et al. Robotic ecological mapping: Habitats and the search for life in the Atacama Desert[J]. University of Arizona, University of California, Los Angeles,2007,112(G4). |
APA | Warren-Rhodes, K..,Weinstein, S..,Piatek, J. L..,Dohm, J..,Hock, A..,...&Boyle, L. Ng.(2007).Robotic ecological mapping: Habitats and the search for life in the Atacama Desert.JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES,112(G4). |
MLA | Warren-Rhodes, K.,et al."Robotic ecological mapping: Habitats and the search for life in the Atacama Desert".JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES 112.G4(2007). |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。