التفاصيل البيبلوغرافية
| العنوان: |
Spatiotemporal distribution of microbial communities in a coastal, sandy aquifer system (Doñana, SW Spain) |
| المؤلفون: |
VELASCO AYUSO, S., GUERRERO, M. C., MONTES, C., LÓPEZ‐ARCHILLA, A. I. |
| المصدر: |
Geobiology ; volume 7, issue 1, page 66-81 ; ISSN 1472-4677 1472-4669 |
| بيانات النشر: |
Wiley |
| سنة النشر: |
2009 |
| المجموعة: |
Wiley Online Library (Open Access Articles via Crossref) |
| الوصف: |
The aquifer system of Doñana (SW Spain) represents the most important freshwater source in the Doñana Natural Area. Its spatiotemporal dynamics favours the hydrological connection between surface and subsurface ecosystems, and promotes matter fluxes among the different terrestrial and aquatic systems present here. This aquifer has been intensively studied from a hydrogeological point of view but little is known from an ecological perspective. In order to understand the ecological roles played by microbial communities in this system, we conducted a long‐term seasonal study of bacterial abundance, cell biomass, bacterial biomass and functional activities over a 2‐year period. Bacterial abundance ranged between 2.11 ± 1.79 × 10 5 and 8.58 ± 6.99 × 10 7 bacteria mL −1 groundwater, average cell biomass was estimated to be 77.01 ± 31.56 fgC and bacterial biomass varied between 8.99 ± 4.10 × 10 −2 and 5.65 ± 0.70 µgC mL −1 . Iron‐related bacteria showed the highest activities among the functional groups studied. Moreover, among the variables that usually control spatial distributions of microbial communities in aquifer systems, depth did not have a relevant effect on this aquifer, at least in the range of depths studied, but grain size, probably due to its direct effects on hydrogeological parameters, such as permeability or porosity, appeared to exert moderate control, principally in terms of bacterial abundance. Finally, significant seasonal differences in the means of these microbiological variables were also observed; temperature seems to be the main factor controlling the temporal distribution of microbial communities in this aquifer system. |
| نوع الوثيقة: |
article in journal/newspaper |
| اللغة: |
English |
| DOI: |
10.1111/j.1472-4669.2008.00183.x |
| الإتاحة: |
https://doi.org/10.1111/j.1472-4669.2008.00183.xTest |
| حقوق: |
http://onlinelibrary.wiley.com/termsAndConditions#vorTest |
| رقم الانضمام: |
edsbas.9C27BD47 |
| قاعدة البيانات: |
BASE |
