|
Records |
Links |
|
Author |
Gibernau, M.; Orivel, J.; Dejean, A.; Delabie, J.; Barabe, D. |
|
|
Title |
Flowering as a key factor in ant-Philodendron interactions |
Type |
Journal Article |
|
Year |
2008 |
Publication |
Journal of Tropical Ecology |
Abbreviated Journal |
J. Trop. Ecol. |
|
|
Volume ![sorted by Volume (numeric) field, descending order (down)](img/sort_desc.gif) |
24 |
Issue |
|
Pages |
689-692 |
|
|
Keywords |
Araceae; domatia; habitat; nest site; non-specific association; Philodendron solimoesense; territoriality |
|
|
Abstract |
|
|
|
Address |
[Gibernau, Marc; Orivel, Jerome] Univ Toulouse 3, Lab Evolut & Divers Biol, UMR CNRS 5174, F-31062 Toulouse 9, France, Email: gibernau@cict.fr |
|
|
Corporate Author |
|
Thesis |
|
|
|
Publisher |
CAMBRIDGE UNIV PRESS |
Place of Publication |
|
Editor |
|
|
|
Language |
|
Summary Language |
|
Original Title |
|
|
|
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
|
Series Volume |
|
Series Issue |
|
Edition |
|
|
|
ISSN |
0266-4674 |
ISBN |
|
Medium |
|
|
|
Area |
|
Expedition |
|
Conference |
|
|
|
Notes |
ISI:000261254400012 |
Approved |
no |
|
|
Call Number |
EcoFoG @ eric.marcon @ |
Serial |
128 |
|
Permanent link to this record |
|
|
|
|
Author |
Clair, B.; Arinero, R.; Leveque, G.; Ramonda, M.; Thibaut, B. |
|
|
Title |
Imaging the mechanical properties of wood cell wall layers by atomic force modulation microscopy |
Type |
Journal Article |
|
Year |
2003 |
Publication |
IAWA Journal |
Abbreviated Journal |
IAWA J. |
|
|
Volume ![sorted by Volume (numeric) field, descending order (down)](img/sort_desc.gif) |
24 |
Issue |
3 |
Pages |
223-230 |
|
|
Keywords |
wood; cell wall; mechanical properties; elastic modulus; tension wood |
|
|
Abstract |
Atomic Force Microscopy in force modulation mode was used to study the elastic properties of the different fibre wall layers of the tension wood of holm oak and normal wood of boco. The method is based on the measurement of the resonance frequency of the microscope lever in contact with the sample. This frequency is related to the reduced Young modulus E* = E/(1-nu(2)) of the material, supposed to be isotropic. 'Elastic' images of the cell are obtained simultaneously with the topographic images, which allows the observation of the mechanical properties of the cells at a nanometric scale. Layers G, S-1, S-2 and ML can clearly be distinguished. By comparison with known materials an estimation of the absolute modulus is given in the range 5-20 GPa, but should be considered with caution, because the inherent anisotropy of the materials has not been taken into account. |
|
|
Address |
Univ Montpellier 2, CNRS, UMR 5508, Lab Mecan & Genie Civil, F-34095 Montpellier, France |
|
|
Corporate Author |
|
Thesis |
|
|
|
Publisher |
INT ASSOC WOOD ANATOMISTS |
Place of Publication |
|
Editor |
|
|
|
Language |
|
Summary Language |
|
Original Title |
|
|
|
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
|
Series Volume |
|
Series Issue |
|
Edition |
|
|
|
ISSN |
0928-1541 |
ISBN |
|
Medium |
|
|
|
Area |
|
Expedition |
|
Conference |
|
|
|
Notes |
ISI:000185049700003 |
Approved |
no |
|
|
Call Number |
EcoFoG @ eric.marcon @ |
Serial |
270 |
|
Permanent link to this record |
|
|
|
|
Author |
Menzel, F.; Orivel, J.; Kaltenpoth, M.; Schmitt, T. |
![find record details (via OpenURL) openurl](img/xref.gif)
|
|
Title |
What makes you a potential partner? Insights from convergently evolved ant-ant symbioses |
Type |
Journal Article |
|
Year |
2014 |
Publication |
Chemoecology |
Abbreviated Journal |
Chemoecology |
|
|
Volume ![sorted by Volume (numeric) field, descending order (down)](img/sort_desc.gif) |
24 |
Issue |
3 |
Pages |
105-119 |
|
|
Keywords |
Aggression; Coevolution; Cuticular hydrocarbons; Formicidae; Interspecific association; Parabiosis; Recognition cues |
|
|
Abstract |
Mutualistic, commensalistic or parasitic interactions are unevenly distributed across the animals and plants: in certain taxa, such interspecific associations evolved more often than in others. Within the ants, associations between species of the genera Camponotus and Crematogaster evolved repeatedly and include trail-sharing associations, where two species share foraging trails, and parabioses, where two species share a nest without aggression. Camponotus and Crematogaster may possess life-history traits that favour the evolution of associations. To identify which traits are affected by the association, we investigated a neotropical parabiosis of Ca. femoratus and Cr. levior and compared it to a paleotropical parabiosis and a trail-sharing association. The two neotropical species showed altered cuticular hydrocarbon profiles compared to non-parabiotic species accompanied by low levels of interspecific aggression. Both species occurred in two chemically distinct types. Camponotus followed artificial trails of Crematogaster pheromones, but not vice versa. The above traits were also found in the paleotropical parabiosis, and the trail-following results match those of the trail-sharing association. In contrast to paleotropical parabioses, however, Camponotus was dominant, had a high foraging activity and often fought against Crematogaster over food resources. We suggest three potential preadaptations for parabiosis. First, Crematogaster uses molecules as trail pheromones, which can be perceived by Camponotus, too. Second, nests of Camponotus are an important benefit to Crematogaster and may create a selection pressure for the latter to tolerate Camponotus. Third, there are parallel, but unusual, shifts in cuticular hydrocarbon profiles between neotropics and paleotropics, and between Camponotus and Crematogaster. © 2014 Springer Basel. |
|
|
Address |
Department of Animal Ecology and Tropical Biology Biocentre, University of Würzburg, Am Hubland, 97074 Würzburg, Germany |
|
|
Corporate Author |
|
Thesis |
|
|
|
Publisher |
Birkhauser Verlag AG |
Place of Publication |
|
Editor |
|
|
|
Language |
|
Summary Language |
|
Original Title |
|
|
|
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
|
Series Volume |
|
Series Issue |
|
Edition |
|
|
|
ISSN |
09377409 (Issn) |
ISBN |
|
Medium |
|
|
|
Area |
|
Expedition |
|
Conference |
|
|
|
Notes |
Export Date: 10 June 2014; Coden: Chmoe; Correspondence Address: Menzel, F.; Department of Evolutionary Biology, Institute of Zoology, University of Mainz, Johannes-von-Müller-Weg 6, 55099 Mainz, Germany; email: menzelf@uni-mainz.de |
Approved |
no |
|
|
Call Number |
EcoFoG @ webmaster @ |
Serial |
547 |
|
Permanent link to this record |
|
|
|
|
Author |
Guitet, S.; Pélissier, R.; Brunaux, O.; Jaouen, G.; Sabatier, D. |
![find record details (via OpenURL) openurl](img/xref.gif)
|
|
Title |
Geomorphological landscape features explain floristic patterns in French Guiana rainforest |
Type |
Journal Article |
|
Year |
2015 |
Publication |
Biodiversity and Conservation |
Abbreviated Journal |
Biodiversity and Conservation |
|
|
Volume ![sorted by Volume (numeric) field, descending order (down)](img/sort_desc.gif) |
24 |
Issue |
5 |
Pages |
1215-1237 |
|
|
Keywords |
Geodiversity; Geomorphology; Landscapes; Species distribution; Tree community |
|
|
Abstract |
Geomorphic landscape features have been suggested as indicators of forest diversity. However, their explanatory power has not yet been explicitly tested at a regional scale in tropical rainforest. We used forest inventories conducted according to a stratified sampling design (3,132 plots in 111 transects at 33 sites) and holistic multi-scale geomorphological mapping derived from a Shuttle Radar Topography Mission digital elevation model to describe and explain spatial patterns in floristic composition across French Guiana (80,000 km2). We measured and identified 123,906 trees with DBH ≥20 cm and used constrained and unconstrained ordinations to analyze variations in the abundance of 221 taxa and 51 families. Variance partitioning and variograms were used to detect spatial patterns in species composition, compare the explanatory power of spatial and environmental factors, and select the variables that best explain forest composition. Strong floristic patterns corresponded to a major latitudinal gradient and significant sub-regional floristic structure. Geomorphological landscapes shaped by historic climate fluctuations and major geological events successfully captured these patterns and explained the variation in abundance of 80 taxa, corresponding to 65 % of the inventoried trees. Our findings suggest that long-term forest dynamics are under substantial “geomorphographic control”. A geomorphological perspective on landscapes that incorporates current and past environmental filters and historical biogeographical processes could thus be used more systematically in tropical regions for regional planning and forest conservation. © 2014, Springer Science+Business Media Dordrecht. |
|
|
Address |
UMR EcoFoG, AgroParisTech, Campus agronomique, Guyane Française, BP 316, Kourou, France |
|
|
Corporate Author |
|
Thesis |
|
|
|
Publisher |
|
Place of Publication |
|
Editor |
|
|
|
Language |
|
Summary Language |
|
Original Title |
|
|
|
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
|
Series Volume |
|
Series Issue |
|
Edition |
|
|
|
ISSN |
|
ISBN |
|
Medium |
|
|
|
Area |
|
Expedition |
|
Conference |
|
|
|
Notes |
Export Date: 8 September 2015 |
Approved |
no |
|
|
Call Number |
EcoFoG @ webmaster @ |
Serial |
620 |
|
Permanent link to this record |
|
|
|
|
Author |
Robillard, T.; ter Hofstede, H.M.; Orivel, J.; Vicente, N.M. |
![find record details (via OpenURL) openurl](img/xref.gif)
|
|
Title |
Bioacoustics of the Neotropical Eneopterinae (Orthoptera, Grylloidea, Gryllidae) |
Type |
Journal Article |
|
Year |
2015 |
Publication |
Bioacoustics |
Abbreviated Journal |
Bioacoustics |
|
|
Volume ![sorted by Volume (numeric) field, descending order (down)](img/sort_desc.gif) |
24 |
Issue |
2 |
Pages |
123-143 |
|
|
Keywords |
|
|
|
Abstract |
In members of the cricket subfamily Eneopterinae (Orthoptera, Grylloidea), songs with powerful high-frequency (HF) harmonics have evolved, which likely represents a distinctive acoustic adaptation. In this study, we analysed or reanalysed the songs of the three eneopterine genera present in the Neotropics to evaluate whether they also possess high-amplitude HF components. We present new data and combine several lines of evidence to interpret or reinterpret the calling signals of a representative species for each genus. We used new recordings in order to detect and analyse potential HF components of the songs. Stridulatory files were measured, and stridulation was studied using high-speed video recordings. The results suggest that all eneopterine genera from the Neotropics use HFs to communicate, based on the rich harmonic content of their songs. Strikingly, the Neotropical eneopterines possess high dominant frequencies, recalling the patterns observed in the tribe Lebinthini, the most speciose tribe of the subfamily distributed in the Western Pacific region and in Southeast Asia: Ligypterus and Ponca show dominant harmonic peaks, whereas Eneoptera possesses unique features. The three species under study, however, deal differently with HFs. |
|
|
Address |
|
|
|
Corporate Author |
|
Thesis |
|
|
|
Publisher |
Taylor & Francis |
Place of Publication |
|
Editor |
|
|
|
Language |
|
Summary Language |
|
Original Title |
|
|
|
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
|
Series Volume |
|
Series Issue |
|
Edition |
|
|
|
ISSN |
0952-4622 |
ISBN |
|
Medium |
|
|
|
Area |
|
Expedition |
|
Conference |
|
|
|
Notes |
doi: 10.1080/09524622.2014.996915 |
Approved |
no |
|
|
Call Number |
EcoFoG @ webmaster @ |
Serial |
651 |
|
Permanent link to this record |
|
|
|
|
Author |
Amusant, N.; Beauchene, J.; Digeon, A.; Chaix, G. |
![goto web page (via DOI) doi](img/doi.gif)
|
|
Title |
Essential oil yield in rosewood (Aniba rosaeodora Ducke): Initial application of rapid prediction by near infrared spectroscopy based on wood spectra |
Type |
Journal Article |
|
Year |
2016 |
Publication |
Journal of Near Infrared Spectroscopy |
Abbreviated Journal |
Journal of Near Infrared Spectroscopy |
|
|
Volume ![sorted by Volume (numeric) field, descending order (down)](img/sort_desc.gif) |
24 |
Issue |
6 |
Pages |
507-515 |
|
|
Keywords |
Aniba rosaeodora; Calibration; Essential oil yield; Nir; Pls; Rosewood |
|
|
Abstract |
Rosewood (Aniba rosaeodora) essential oil is a valuable ingredient that has long been used in the perfume and cosmetic industries. The main rosewood timber quality parameters are its essential oil yield and quality. A hydrodistillation method has been developed for yield determination, but it is time consuming. Here we tested the applicability of near infrared (NIR) spectroscopy for determining essential oil yield directly from wood powder. Essential oil from 139 wood powders was extracted via hydrodistillation. The measurements were based on the ratio between the extracted essential oil mass and the oven-dried wood mass and were correlated with the wood powder NIR spectra. The calibration model statistical findings demonstrated that NIR could be a fast and feasible alternative method for selecting trees with a high essential oil yield potential. NIR-based predictions obtained in an independent validation set indicated a high correlation (r2e = 0.92) with laboratory essential oil yield measurements. This NIR model could help wood managers in selecting trees with a high essential oil yield potential and in developing sustainable rosewood management strategies. © IM Publications LLP 2016. All rights reserved. |
|
|
Address |
ESALQ-USP, Piracicaba, Brazil |
|
|
Corporate Author |
|
Thesis |
|
|
|
Publisher |
|
Place of Publication |
|
Editor |
|
|
|
Language |
|
Summary Language |
|
Original Title |
|
|
|
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
|
Series Volume |
|
Series Issue |
|
Edition |
|
|
|
ISSN |
|
ISBN |
|
Medium |
|
|
|
Area |
|
Expedition |
|
Conference |
|
|
|
Notes |
Cited By :1; Export Date: 17 January 2017 |
Approved |
no |
|
|
Call Number |
EcoFoG @ webmaster @ |
Serial |
707 |
|
Permanent link to this record |
|
|
|
|
Author |
Fontaine, S.; Stahl, C.; Klumpp, K.; Picon-Cochard, C.; Grise, M.M.; Dezécache, C.; Ponchant, L.; Freycon, V.; Blanc, L.; Bonal, D.; Burban, B.; Soussana, J.-F.; Blanfort, V.; Alvarez, G. |
![find record details (via OpenURL) openurl](img/xref.gif)
|
|
Title |
Response to Editor to the comment by Schipper and Smith to our paper entitled 'Continuous soil carbon storage of old permanent pastures in Amazonia' |
Type |
Journal Article |
|
Year |
2018 |
Publication |
Global Change Biology |
Abbreviated Journal |
Global Change Biology |
|
|
Volume ![sorted by Volume (numeric) field, descending order (down)](img/sort_desc.gif) |
24 |
Issue |
3 |
Pages |
e732-e733 |
|
|
Keywords |
chronosequence study; continuous C accumulation; deep soil C; eddy covariance; grassland |
|
|
Abstract |
|
|
|
Address |
|
|
|
Corporate Author |
|
Thesis |
|
|
|
Publisher |
|
Place of Publication |
|
Editor |
|
|
|
Language |
|
Summary Language |
|
Original Title |
|
|
|
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
|
Series Volume |
|
Series Issue |
|
Edition |
|
|
|
ISSN |
|
ISBN |
|
Medium |
|
|
|
Area |
|
Expedition |
|
Conference |
|
|
|
Notes |
Export Date: 28 February 2018 |
Approved |
no |
|
|
Call Number |
EcoFoG @ webmaster @ Fontaine_etal2018 |
Serial |
796 |
|
Permanent link to this record |
|
|
|
|
Author |
Denis, T.; Hérault, B.; Brunaux, O.; Guitet, S.; Richard-Hansen, C. |
![goto web page (via DOI) doi](img/doi.gif)
|
|
Title |
Weak environmental controls on the composition and diversity of medium and large-sized vertebrate assemblages in neotropical rain forests of the Guiana Shield |
Type |
Journal Article |
|
Year |
2018 |
Publication |
Diversity and Distributions |
Abbreviated Journal |
Diversity Distrib. |
|
|
Volume ![sorted by Volume (numeric) field, descending order (down)](img/sort_desc.gif) |
24 |
Issue |
11 |
Pages |
1545-1559 |
|
|
Keywords |
biodiversity; birds; functional traits; mammals; refugia hypothesis; spatial patterns; Aves; Mammalia; Vertebrata |
|
|
Abstract |
Aim: Despite their often high-trophic position and their contribution to many ecosystem functions, little is known about the factors affecting assemblage structure of medium- and large-sized neotropical vertebrates. We examined the relative roles played by the physical and biological environment, and by purely spatial processes, in shaping the composition and diversities of these vertebrate assemblages. Then, based on the theory that the Guianan forest cover shrank to isolated pockets during the late Pleistocene–Holocene, we tested if the past forest refugia may have shaped current vertebrate assemblages. Location: French Guiana, Guiana Shield, South America. Methods: Abundances of 19 medium- and large-sized vertebrates were estimated at 21 locations in undisturbed Guianan rain forests. Using taxonomic, functional and phylogenetic metrics, we partitioned the effects of a range of physical and biological environmental conditions and purely spatial predictors in shaping both assemblage composition and (alpha and beta) diversities. Results: We identified a significant, but weak relationship between taxonomic, functional and phylogenetic assemblage composition and environmental conditions. Assemblage diversity patterns were mainly explained by spatial predictors irrespective of the metrics. Current assemblage diversities are correlated with Pleistocene–Holocene forest history, with the highest alpha diversities outside of putative forest refugia, and the highest beta diversities inside these areas. Main conclusions: Current vertebrate assemblage composition is not strongly marked by common environmental factors. Our main conclusion is that assemblage composition results from individual species responses to the environment. Our findings also suggest that dispersal-related processes or more probably historical processes shape (alpha and beta) diversity patterns. In fact, forest fragmentation during Pleistocene–Holocene climate changes could have led to isolated vertebrate assemblages evolving into unique species assemblages creating the current high beta diversity inside refugia, whereas the lower habitat stability outside of refugia could have led to mixed assemblages in areas recolonized by forest vertebrates (current high alpha diversity outside of refugia). |
|
|
Address |
IRD, UMR AMAP (Cirad, CNRS, INRA, Université de Montpellier), Montpellier, France |
|
|
Corporate Author |
|
Thesis |
|
|
|
Publisher |
Blackwell Publishing Ltd |
Place of Publication |
|
Editor |
|
|
|
Language |
|
Summary Language |
|
Original Title |
|
|
|
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
|
Series Volume |
|
Series Issue |
|
Edition |
|
|
|
ISSN |
13669516 (Issn) |
ISBN |
|
Medium |
|
|
|
Area |
|
Expedition |
|
Conference |
|
|
|
Notes |
|
Approved |
no |
|
|
Call Number |
EcoFoG @ webmaster @ |
Serial |
833 |
|
Permanent link to this record |
|
|
|
|
Author |
Devault, D.A.; Beilvert, B.; Winterton, P. |
![goto web page (via DOI) doi](img/doi.gif)
|
|
Title |
Ship breaking or scuttling? A review of environmental, economic and forensic issues for decision support |
Type |
Journal Article |
|
Year |
2017 |
Publication |
Environmental Science and Pollution Research |
Abbreviated Journal |
Environ. Sci. Pollut. Res. |
|
|
Volume ![sorted by Volume (numeric) field, descending order (down)](img/sort_desc.gif) |
24 |
Issue |
33 |
Pages |
25741-25774 |
|
|
Keywords |
Artificial reef; Diving; Ship recycling; Ship Recycling Facilities; Shipbreaking; Tourism; Working conditions; Wrecks; artificial reef; coastal erosion; coastal zone management; cost-benefit analysis; decision support system; developing world; economic impact; environmental economics; environmental impact assessment; environmental issue; facility location; health and safety; invasive species; profitability; recycling; shipping; tourism; working conditions; wreck; analysis; decision support system; economics; international cooperation; pollution; prevention and control; procedures; recycling; ship; statistics and numerical data; Decision Support Techniques; Environmental Pollution; Internationality; Recycling; Ships |
|
|
Abstract |
In a globalized world, the world trade fleet plays a pivotal role in limiting transport costs. But, the management of obsolete ships is an acute problem, with most Ship Recycling Facilities (SRF) situated in developing countries. They are renowned for their controversial work and safety conditions and their environmental impact. Paradoxically, dismantlement is paid for by the shipowners in accordance with international conventions therefore it is more profitable for them to sell off ships destined for scrapping. Scuttling, the alternative to scrapping, is assessed in the present review to compare the cost/benefit ratios of the two approaches. Although scrapping provides employment and raw materials – but with environmental, health and safety costs – scuttling provides fisheries and diving tourism opportunities but needs appropriate management to avoid organic and metal pollution, introduction of invasive species and exacerbation of coastal erosion. It is also limited by appropriate bottom depth, ship type and number. The present review inventories the environmental, health, safety, economic, and forensic aspects of each alternative. © 2016, Springer-Verlag Berlin Heidelberg. |
|
|
Address |
Département Langues et Gestion, Université Toulouse III – Paul Sabatier, 118 route de Narbonne, Toulouse cedex 09, 31062, France |
|
|
Corporate Author |
|
Thesis |
|
|
|
Publisher |
Springer Verlag |
Place of Publication |
|
Editor |
|
|
|
Language |
|
Summary Language |
|
Original Title |
|
|
|
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
|
Series Volume |
|
Series Issue |
|
Edition |
|
|
|
ISSN |
09441344 (Issn) |
ISBN |
|
Medium |
|
|
|
Area |
|
Expedition |
|
Conference |
|
|
|
Notes |
|
Approved |
no |
|
|
Call Number |
EcoFoG @ webmaster @ |
Serial |
869 |
|
Permanent link to this record |
|
|
|
|
Author |
Solander, K.C.; Newman, B.D.; Carioca De Araujo, A.; Barnard, H.R.; Berry, Z.C.; Bonal, D.; Bretfeld, M.; Burban, B.; Candido, L.A.; Célleri, R.; Chambers, J.Q.; Christoffersen, B.O.; Detto, M.; Dorigo, W.A.; Ewers, B.E.; Ferreira, S.J.F.; Knohl, A.; Leung, L.R.; McDowell, N.G.; Miller, G.R.; Monteiro, M.T.F.; Moore, G.W.; Negron-Juarez, R.; Saleska, S.R.; Stiegler, C.; Tomasella, J.; Xu, C. |
![goto web page url](img/www.gif)
![find record details (via OpenURL) openurl](img/xref.gif)
|
|
Title |
The pantropical response of soil moisture to El Niño |
Type |
Journal Article |
|
Year |
2020 |
Publication |
Hydrology and Earth System Sciences |
Abbreviated Journal |
Hydrol. Earth Syst. Sci. |
|
|
Volume ![sorted by Volume (numeric) field, descending order (down)](img/sort_desc.gif) |
24 |
Issue |
5 |
Pages |
2303-2322 |
|
|
Keywords |
Cluster analysis; Oceanography; Soil moisture; Surface waters; Tropics; Climate anomalies; Clustered datum; Hydrologic changes; Land data assimilation systems; Sea surface temperature anomalies; Situ soil moistures; Tropical hydrologies; Tropical Pacific ocean; Soil surveys |
|
|
Abstract |
The 2015–2016 El Niño event ranks as one of the most severe on record in terms of the magnitude and extent of sea surface temperature (SST) anomalies generated in the tropical Pacific Ocean. Corresponding global impacts on the climate were expected to rival, or even surpass, those of the 1997–1998 severe El Niño event, which had SST anomalies that were similar in size. However, the 2015–2016 event failed to meet expectations for hydrologic change in many areas, including those expected to receive well above normal precipitation. To better understand how climate anomalies during an El Niño event impact soil moisture, we investigate changes in soil moisture in the humid tropics (between ±25∘) during the three most recent super El Niño events of 1982–1983, 1997–1998 and 2015–2016, using data from the Global Land Data Assimilation System (GLDAS). First, we use in situ soil moisture observations obtained from 16 sites across five continents to validate and bias-correct estimates from GLDAS (r2=0.54). Next, we apply a k-means cluster analysis to the soil moisture estimates during the El Niño mature phase, resulting in four groups of clustered data. The strongest and most consistent decreases in soil moisture occur in the Amazon basin and maritime southeastern Asia, while the most consistent increases occur over eastern Africa. In addition, we compare changes in soil moisture to both precipitation and evapotranspiration, which showed a lack of agreement in the direction of change between these variables and soil moisture most prominently in the southern Amazon basin, the Sahel and mainland southeastern Asia. Our results can be used to improve estimates of spatiotemporal differences in El Niño impacts on soil moisture in tropical hydrology and ecosystem models at multiple scales. |
|
|
Address |
Coordination of Research and Development, National Centre for Monitoring and Early Warning of Natural Disasters, Cachoeira Paulista, Brazil |
|
|
Corporate Author |
|
Thesis |
|
|
|
Publisher |
Copernicus GmbH |
Place of Publication |
|
Editor |
|
|
|
Language |
|
Summary Language |
|
Original Title |
|
|
|
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
|
Series Volume |
|
Series Issue |
|
Edition |
|
|
|
ISSN |
10275606 (Issn) |
ISBN |
|
Medium |
|
|
|
Area |
|
Expedition |
|
Conference |
|
|
|
Notes |
Export Date: 29 May 2020; Correspondence Address: Solander, K.C.; Earth and Environmental Sciences, Los Alamos National LaboratoryUnited States; email: ksolander@lanl.gov |
Approved |
no |
|
|
Call Number |
EcoFoG @ webmaster @ |
Serial |
934 |
|
Permanent link to this record |