Library Catalogue

Library Catalogue

  • external user (warningwarning)
  • Log in as
  • About the Catalogue

    Union Catalogue of Agricultural Libraries in the Netherlands

    The WUR Library Catalogue contains bibliographic data on books and periodicals held by the libraries of Wageningen University and Research Centre and some 15 associated libraries. Holding data are added to each record.

    Subjects covered include Agrotechnology, Food and Food Production, Plant and Animal Sciences, Soil Science, Geo-information, Landscape and Spatial Planning, Water and Climate, Ecosystem Studies, Economics and Society.

    The joint collections of the participating libraries cover a substantial part of the internationally available scientific literature in these disciplines.

    As far as Dutch scientific literature in these fields is concerned, coverage can be considered near 100%, including much of the so-called "grey literature".

    All titles are entered in their original language. Keywords are added to facilitate subject searching.

    The database is updated every day and now contains over 830.000 records.

Record number 2232928
Title Hydro-meteorological functioning of tropical montane cloud forests in the Orinoco River basin
show extra info.
Beatriz Helena Ramírez Correal
Author(s) Ramírez Correal, Beatriz Helena (dissertant)
Publisher Wageningen : Wageningen University
Publication year 2018
Description 206 pages figures, diagrams
Description 1 online resource (PDF, 206 pages) figures, diagrams
Notes Includes bibliographical references. - With summary in English
ISBN 9789463432153; 9463432159
Tutors Leemans, Prof. dr. ; Ganzeveld, Dr. L.N. ; Teuling, Dr. A.J.
Graduation date 2018-01-30
Dissertation no. 6857
Author abstract show abstract

The hydrologic interactions between the atmosphere, land cover and soil largely determine water availability to sustain ecosystems’and anthropogenic demands. Therefore, understanding how these interactions operate is required to design strategies to reduce or cope with the potential hydrological impacts of land-use and climate change. A particularly vulnerable ecosystem to changes in land use and climate is the Tropical Montane Cloud Forest (TMCF). The hydrology of this ecosystem is determined by the interactions between fog affected meteorology and land cover; both of which present a large spatio-temporal variability. This thesis aims to improve our understanding on TMCFs’ hydrological functioning in the seasonal Orinoco River basin headwaters located in the Colombian eastern Andes. This information is fundamental to anticipate the hydrological consequences of climate and land-use change.

Initially, the hydrometeorological spatio-temporal variability was evaluated in three neighboring catchments with contrasting forest cover and the corresponding hydrological responses of soil moisture and streamflow were assessed (Chapter 2). Results revealed a positive relation of fog/rainfall with elevation that steepened during the dry season. Therefore, hydrological responses were modulated by the interaction of seasonality, land cover and elevation. From these analyses, two key processes that could potentially explain the seasonal contrasts between the water budgets of the studied catchments, were identified.

The first was the water storage and release from organic soil layers. The hydrological role of these organic layers was assessed for different land-cover and climate conditions by combining field and laboratory data with modelling of vertical water flows under variable climate conditions (Chapter 3). From a land-use change perspective the storage loss caused by organic layer removal following deforestation largely explains the higher peak flows in the deforested catchment during the wet season. From the climate change perspective, simulated transpiration was limited by soil moisture during an observed severe dry season and continued to decline under expected climate change with the prolongation of dry spells. These results indicate that the organic layers have to be considered when evaluating hydrological impacts in TMCF catchments due to land-use and climate change.

The second identified key process was the potential fog influence on the catchments’ water budgets through its effect on the canopy water budget. Therefore, the fog’s effect on the canopy water budget was analyzed in three TMCF successional stages by combining hydrometeorological data on a high temporal resolution (i.e. 10 minutes) with modelling (Chapter 4). This approach helped to quantify, albeit a high uncertainty, the fog effects on the canopy-water balance. Even though additional water inputs by fog interception are not significant in relation to total rainfall, the fog’s effect in reducing potential evaporation plays a key role in sustaining canopy and overall system moisture. An improved understanding of the hydrological functioning in TMCFs in the Orinoco River basin, allowed to identify current and potential climate and land-use change impacts on the catchment water balances (Chapter 5). This information will be relevant in guiding future research on TMCF hydrological functioning and in supporting local and regional land-use planning policies and climate-change adaptation plans (Chapter 6).

Online Embargo on full text. Full text available from 2019-01-30
On paper FORUM ; STACKS ; NN08202,6857 ; Not for loan
Publication type PhD thesis
Language English
There are no comments yet. You can post the first one!
Post a comment

To support researchers to publish their research Open Access, deals have been negotiated with various publishers. Depending on the deal, a discount is provided for the author on the Article Processing Charges that need to be paid by the author to publish an article Open Access. A discount of 100% means that (after approval) the author does not have to pay Article Processing Charges.

For the approval of an Open Access deal for an article, the corresponding author of this article must be affiliated with Wageningen University & Research.

Please log in to use this service. Login as Wageningen University & Research user or guest user in upper right hand corner of this page.