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See detailL'Ardenne et la Gaume: un paradis pour nos mammifères sauvages ?
Libois, Roland ULg

in Comité de direction d'"Ardenne et Gaume" (Ed.) Le grand livre d'Ardenne et Gaume: la nature et l'homme (1984)

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See detailL'Ardenne géographique et géologique
Malaise, Constantin ULg

in Bulletin de la Société Royale Belge de Géographie (1906), 1(30), 50-52

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See detailArdisikivuoside, a new triterpenoid saponin from Ardisia kivuensis (Mysinaceae)
Ndontsa, Blanche; Tchinda Tiabou, Alembert ULg; Teponno, Rémy et al

in Natural Product Communications [=NPC] (2012), 7

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See detailARDS and sepsis: ressemblances and differences
Lamy, Maurice ULg; Deby, Ginette ULg; Damas, Pierre ULg

in Sibbald, W. J.; Vincent, Jean-Louis (Eds.) Clinical trials for the treatment of sepsis. Update in intensive care and emergency medicine (1994)

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See detailAre ACE-inhibitors or ARB's still needed for cardiovascular prevention in high risk patients? Insights from PRoFESS and TRANSCEND
Van Mieghem, W.; Billiouw, J.-M.; Brohet, C. et al

in Acta Clinica Belgica (2010), 65-2

The HOPE and EUROPA clinical studies have shown that treatment with the angiotensin-converting enzyme (ACE) inhibitors, ramipril and perindopril, may reduce the occurence of major cardiovascular events in ... [more ▼]

The HOPE and EUROPA clinical studies have shown that treatment with the angiotensin-converting enzyme (ACE) inhibitors, ramipril and perindopril, may reduce the occurence of major cardiovascular events in patients with proven atherosclerotic disease. The recently published results of the PRoFESS and TRANSCEND trials completed the much needed information concerning the use of an angiotensin receptor blocker for patients at high risk of cardiovascular events. PRoFESS compared a therapy of telmisartan 80 mg daily with placebo in patients with a recent ischemic stroke. The difference in the primary outcome of first recurrent stroke was not statistically significant between telmisartan and placebo. The secondary outcome of major cardiovascular events showed a relative risk reduction (RRR) of 7% in favour of telmsartan. This tended to be significant (p=0.06) despite a rather short follow-up period of only 28 months. In TRANSCEND 5,926 patients at high risk for cardiovascular events were randomized to a treatment with telmisartan 80 mg daily or placebo for a mean duration of follow-up of 56 months. The primary composite outcome of cardiovascular death, myocardial infarction, stroke or hospitalization for heart failure showed a non-significant 8% RRR in favour of the telmisartan treated patients. The main secondary outcome of cardiovascular death and myocardial infarction or stroke as used in the HOPE trial showed a non-significant RRR of 13% in favour of telmisartan treated patients (p=0,068 adjusted for multiplicity of comparisons). In comparing the Kaplan-Meier curves for the endpoint of major cardiovascular events used in HOPE, EUROPA, TRANSCEND and PRoFESS, the trends are similar. Results of most of th recently published trials have been neutral. This could partly be explained by major improvements in the optimal background therapy of the patients included. Nevertheless, the results of PRoFESS and TRANSCEND do not contradict the results from previous studies with the ACE inhibitors ramipril and perindopril and the ARB telmisartan. [less ▲]

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See detailAre agricultural ecosystems important BVOC « exchangers »? Evidences from 2 measurement years on croplands at Lonzée (Belgium)
Bachy, Aurélie ULg; Aubinet, Marc ULg; Schoon, Niels et al

Poster (2014, July 01)

For the last decades, agricultural ecosystems have been a key biome for diverse socio-economical, environmental and climatic issues. And one of these climatic issues is just BVOC (Biogenic Volatile ... [more ▼]

For the last decades, agricultural ecosystems have been a key biome for diverse socio-economical, environmental and climatic issues. And one of these climatic issues is just BVOC (Biogenic Volatile Organic Compounds) emission from terrestrial ecosystems. Indeed, those compounds which are mostly emitted by plants play a great role in the atmospheric chemistry, thereby influencing the Earth surface radiative budget and the tropospheric air quality. However, so far, very few is known about BVOC exchange by crops, implying that huge uncertainties remain about qualifying, quantifying and determining sources/sinks and driving mechanisms of BVOC exchanges between croplands ecosystems and the atmosphere. We present here the first long term BVOC fluxes measurement study conducted on maize (2012) and winter wheat (2013), respectively the second and first most important worldwide crops (FAOSTAT). BVOC exchange was measured using the disjunct by mass scanning eddy covariance technique (+ PTR-MS, Ionicon) at the Lonzée Terrestrial Observatory (ICOS site) in Belgium. Main results are: (i) crops emit mainly methanol; (ii) BVOC fluxes from studied crops is lower than in literature, suggesting that agricultural ecosystems are poor BVOC exchangers; (iii) soil is a significant BVOC source. [less ▲]

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See detailAre agricultural ecosystems important BVOC « exchangers »? Evidences from 2 measurement years on croplands at Lonzée Terrestrial Observatory (Belgium)
Bachy, Aurélie ULg; Aubinet, Marc ULg; Schoon, Niels et al

Poster (2014, September 23)

For the last decades, agricultural ecosystems have been a key biome for diverse socio-economical, environmental and climatic issues. And one of these climatic issues is just BVOC (Biogenic Volatile ... [more ▼]

For the last decades, agricultural ecosystems have been a key biome for diverse socio-economical, environmental and climatic issues. And one of these climatic issues is just BVOC (Biogenic Volatile Organic Compounds) emission from terrestrial ecosystems. Indeed, those compounds which are mostly emitted by plants play a great role in the atmospheric chemistry, thereby influencing the Earth surface radiative budget and the tropospheric air quality. However, so far, very few is known about BVOC exchange by crops, implying that huge uncertainties remain about qualifying, quantifying and determining sources/sinks and driving mechanisms of BVOC exchanges between croplands ecosystems and the atmosphere. We present here the first long term BVOC fluxes measurement study conducted on maize (2012) and winter wheat (2013), respectively the second and first most important worldwide crops (FAOSTAT). BVOC exchange was measured using the disjunct by mass scanning eddy covariance technique (+ PTR-MS, Ionicon) at the Lonzée Terrestrial Observatory (ICOS site) in Belgium. Main results are: (i) crops emit mainly methanol; (ii) BVOC emission from studied crops is lower than in literature, suggesting that agricultural ecosystems are poor BVOC exchangers; (iii) soil is a significant BVOC source. [less ▲]

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See detailAre all glitazones the same?
Van Gaal, Luc; Scheen, André ULg

in Diabetes/Metabolism Research & Reviews (2002), 18 Suppl 2

This supplement focuses on the benefits of targeting insulin resistance through therapy with a new class of oral antidiabetic agents, the thiazolidinediones (TZDs) or 'glitazones'. There are important ... [more ▼]

This supplement focuses on the benefits of targeting insulin resistance through therapy with a new class of oral antidiabetic agents, the thiazolidinediones (TZDs) or 'glitazones'. There are important differences between the three TZD class members that warrant discussion to enable physicians to make rational and informed therapeutic choices between the agents. Overall the TZDs appear to be similar in their effects on blood glucose, as all class members have demonstrated effective glycaemic control, both as monotherapy and in combination with sulphonylureas, metformin or exogenous insulin. The safety profiles of the three agents are more diverse, with what appear to be 'TZD class effects', (probably mediated via activation of peroxisome proliferator-activated receptor gamma [PPAR gamma]) and 'TZD-specific effects', which are unique to each agent and may be a consequence of differing chemical structures. While rosiglitazone and pioglitazone share some class effects with troglitazone, they have several characteristics that define them as unique agents. By tackling the control of type 2 diabetes through direct effects on insulin resistance, the TZDs represent an important new therapeutic tool for healthcare professionals. [less ▲]

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See detailAre Amphipathic Asymmetric Peptides Ubiquitous Structures For Membrane Destabilisation?
Rahman, M.; Lins, Laurence ULg; Thomas, Annick ULg et al

in Journal of Molecular Modeling (1997), 3(5), 203-215

The fusion of some viruses (SIV, BLV, etc) to host cells implicates short fragments of the fusion protein that are asymmetric amphipathic helices in molecular modelling. The tilted orientation of these ... [more ▼]

The fusion of some viruses (SIV, BLV, etc) to host cells implicates short fragments of the fusion protein that are asymmetric amphipathic helices in molecular modelling. The tilted orientation of these fragments at a water/lipid interface is directly related to their fusogenic capacity. On this basis, we have searched for fragments of sequences corresponding to “viral fusion peptides” in other proteins. We have developed a strategy to detect them from primary sequences. Many candidates were detected, especially in transmembrane areas of membranous proteins, in signal sequences and in globular proteins. We suggest that they are involved in the dynamics of lipid-protein interactions. [less ▲]

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See detailAre amphipods influenced by Posidonia oceanica seagrass features?
Sturaro, Nicolas ULg; Lepoint, Gilles ULg; Michel, Loïc ULg et al

Poster (2014, December 12)

In the Mediterranean Sea, the seagrass Posidonia oceanica plays an important role as habitat for invertebrates, among which amphipod crustaceans represent a dense and diverse assemblage. Recent studies ... [more ▼]

In the Mediterranean Sea, the seagrass Posidonia oceanica plays an important role as habitat for invertebrates, among which amphipod crustaceans represent a dense and diverse assemblage. Recent studies have observed that amphipod density and biomass vary significantly on small spatial scales. This patchiness may be caused by different factors, such as recruitment, competition, and predation; however, habitat features, resulting in availability of resources such as food or shelter, may also be important in structuring these assemblages. This study examined the relationships between amphipod and habitat features in a P. oceanica meadow of the Revellata Bay (Corsica). The sampling was carried out in a continuous meadow colonizing soft substrates at constant depth in August 2008. We quantified the density and biomass of each amphipod species, as well as habitat features, namely shoot density, leaf and epiphyte biomasses, percentage of leaves per shoot having alteration marks and litter biomass. Using multiple regression analyses, few weak significant relationships were identified between amphipod and habitat features. The number of species and the diversity appeared unaffected by the measured habitat features. In contrast, total amphipod density and biomass were generally positively related to the shoot density and epiphyte biomass of P. oceanica, respectively. Overall, habitat features accounted for 0-30% of the variation in the densities of the amphipod species. A distance-based linear model explained a total of 25.8% of the variation of the amphipod assemblages (of which 18.6% was explained by litter biomass). Amphipods are therefore influenced by some P. oceanica features, but only weakly. Furthermore, some features appeared to influence individual species whereas others functioned at the assemblage level. The main challenge remains in evaluating the scale at which these features act and the way in which they influence the structure of assemblages. [less ▲]

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See detailAre Antibodies Responsible for a Decreased Superovulatory Response in Goats Which Have Been Treated Repeatedly with Porcine Follicle-Stimulating Hormone ?
Remy, Benoit; Baril, Gérard; Vallet, J. C. et al

in Theriogenology (1991), 36(3), 389-99

Repeated administration of xenogenic gonadotropins in human or animal species may be responsible for antibody production and refractoriness. An experiment was conducted in which goats were treated with ... [more ▼]

Repeated administration of xenogenic gonadotropins in human or animal species may be responsible for antibody production and refractoriness. An experiment was conducted in which goats were treated with porcine FSH (p-FSH) at 6-week intervals for a period of 7 months. A sensitive radioimmunoassay (RIA) was used to detect antibodies to p-FSH in plasma samples taken at short-term intervals during a 7-month period. Antibodies appeared after the first injection, and levels increased following booster injections. A high correlation rate existed between antibody level and superovulatory response. Refractoriness in goats was associated with a high level of antibodies. [less ▲]

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See detailAre Belgian hospitals prepared for an H5NI1-pandemic?
De Cauwer, H. G.; Mortelmans, L. J. M.; D'Orio, Vincenzo ULg

in European Journal of Emergency Medicine (2007), 14(4), 204-206

Objective Virulent airborne diseases can be a real burden to a nation's health system. The most recent threat is the fear of a mutation-induced H5N1-influenza pandemic. We studied whether Belgian ... [more ▼]

Objective Virulent airborne diseases can be a real burden to a nation's health system. The most recent threat is the fear of a mutation-induced H5N1-influenza pandemic. We studied whether Belgian hospitals are able to deal with H5N1-influenza infected patients in the case of a pandemic. Many patients, including children, may require artificial ventilation within 48h after admission. Methods A survey aimed at determining 'availability and preparedness' was sent by e-mail to the different Belgian Emergency Departments. Results and discussion Sixty-five hospitals were finally included. The amount of patients being potentially admitted is limited, owing to the reduced number of intensive care beds equipped with automatic ventilators. Furthermore, the number of available intensive care beds for children is still lower than for adult patients. The number of mortuary places, in the case of a catastrophe, is also insufficient. Although most hospitals set up a disaster plan on H5N1, there are only limited stocks of antiviral medication to protect the hospital staff in the acute phase. A separate triage area is only available in a limited number of hospitals. We conclude that Belgian hospitals and emergency departments are not equipped to deal with potential pandemic situations. [less ▲]

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See detailAre bio and nano likely to be compared? If so, what are the consequences on public participation?
Thoreau, François ULg

Conference (2009, March 29)

Like modern biotechnologies, nanotechnologies are a generic area of research linked with several interconnected disciplinary fields. They may be converted into a large panel of applications. It also ... [more ▼]

Like modern biotechnologies, nanotechnologies are a generic area of research linked with several interconnected disciplinary fields. They may be converted into a large panel of applications. It also brings, with its development, promises of a quite huge potential including important economic opportunities. Both of those emergent technologies also raise important social, ethical or environmental issues. Nevertheless, many substantive differences remain between biotechnologies and nanotechnologies. The former was introduced in society by a time public actors were less sensitive to public participation, as shows the history of parliamentary Technology Assessment. A lack of public participation is often told to have grounded some public opposition to some particular biotechnologies, with the usually quoted case of GMOs. The latter are currently under development in quite other circumstances, as social shaping of technology begins to be widely acknowledged and role played by STS community grows faster. Nanotechnologies deal with more uncertainties and more complexity. So it is commonly accepted that, within their development process, they should include more public participation to avoid some pitfalls of biotechnologies. Still, other differences that context exist between biotechnologies and nanotechnologies. It may be stressed that biotechnologies have left laboratories for a private financial designing of marketable products and that nanotechnologies are just starting to leave laboratories under great public impulsions, with wide public support and funding, as in the case of the National Nanotechnology Initiative in the US. So in the presentation we consider whether, given those differences, biotechnologies and nanotechnologies are likely to be compared. Then we pick a look to potential consequences related to public participation. Should there be more public participation? What for? Should it be driven in a different way? [less ▲]

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See detailAre blood transfusions associated with greater mortality rates? Results of the Sepsis Occurrence in Acutely Ill Patients study.
Vincent, Jean-Louis; Sakr, Yasser; Sprung, Charles et al

in Anesthesiology (2008), 108(1), 31-9

BACKGROUND: Studies have suggested worse outcomes in transfused patients and improved outcomes in patients managed with restricted blood transfusion strategies. The authors investigated the relation of ... [more ▼]

BACKGROUND: Studies have suggested worse outcomes in transfused patients and improved outcomes in patients managed with restricted blood transfusion strategies. The authors investigated the relation of blood transfusion to mortality in European intensive care units (ICUs). METHODS: The Sepsis Occurrence in Acutely Ill Patients study was a multicenter, observational study that included all adult patients admitted to 198 European ICUs between May 1 and May 15, 2002 and followed them until death, until hospital discharge, or for 60 days. Patients were classified depending on whether they had received a blood transfusion at any time during their ICU stay. RESULTS: Of 3,147 patients, 1,040 (33.0%) received a blood transfusion. These patients were older (mean age, 62 vs. 60 yr; P = 0.035) and were more likely to have liver cirrhosis or hematologic cancer, to be a surgical admission, and to have sepsis. They had a longer duration of ICU stay (5.9 vs. 2.5 days; P < 0.001) and a higher ICU mortality rate (23.0 vs. 16.3%; P < 0.001) but were also more severely ill on admission (Simplified Acute Physiology Score II, 40.2 vs. 34.7; P < 0.001; Sequential Organ Failure Assessment score, 6.5 vs. 4.5; P < 0.001). There was a direct relation between the number of blood transfusions and the mortality rate, but in multivariate analysis, blood transfusion was not significantly associated with a worse mortality rate. Moreover, in 821 pairs matched according to a propensity score, there was a higher 30-day survival rate in the transfusion group than in the other patients (P = 0.004). CONCLUSION: This observational study does not support the view that blood transfusions are associated with increased mortality rates in acutely ill patients. [less ▲]

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See detailAre bogs reservoirs for emerging disease vectors? Evaluation of Culicoides populations in the Hautes Fagnes Nature Reserve (Belgium)
Zimmer, Jean-Yves ULg; Losson, Bertrand ULg; Smeets, François ULg et al

Poster (2013, October)

Several species of Culicoides (Diptera: Ceratopogonidae) biting midges serve as biological vec{ors for the bluetongue virus (BTV) and the recently described Schmallenberg virus in northern Europe. since ... [more ▼]

Several species of Culicoides (Diptera: Ceratopogonidae) biting midges serve as biological vec{ors for the bluetongue virus (BTV) and the recently described Schmallenberg virus in northern Europe. since their recent emergence in this part of the continent, these diseases have caused considerable economic losses to the sheep and cattle industries. Much data is nou, âvailable that describe the distribuüon, population dynamics, and feeding habits of these insects. However, little is known regarding the presence of culicoides in unusual habitats such as peaÿ marshes, nor their potential vector capacity. This study evaluated Culicoides biting midges present in the bogs of a Belgian nature reserve compared to those residing at a nearby cattle farm. Culicoides were trapped in 2011 at four different sites (broadleaved and coniferous forested areas, open environments, and at a scientific station) located in the Hautes Fagnes Nature Reserve (Belgium). An additional light trap was operated on a nearby caftle farm. High numbers of biting midges were captured in the marshy area and most of them were Culicoides impunc{atus, a potential vector of BïV and other pâthogens. ln addition, fewer numbers of c. obsoletus/c. scoticus species, C. chiopterus, and C. dewulfi were observed in the bogs compared to the farm. The wet environment and oligotrophic nature of the soil were probably responsible for these changes in the respective populations. A total of 297,808 Culicoides midges belonging to 27 species were identified during this study and 3 of these species (C. sphagnumensis, C. clintoni and C. comosioculatus) were described in Belgium for the first time. [less ▲]

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See detailAre Bogs Reservoirs for Emerging Disease Vectors? Evaluation of Culicoides Populations in the Hautes Fagnes Nature Reserve (Belgium)
Zimmer, Jean-Yves ULg; Smeets, François ULg; Simonon, Grégory et al

in PLoS ONE (2013), 8(6),

Several species of Culicoides (Diptera: Ceratopogonidae) biting midges serve as biological vectors for the bluetongue virus (BTV) and the recently described Schmallenberg virus (SBV) in northern Europe ... [more ▼]

Several species of Culicoides (Diptera: Ceratopogonidae) biting midges serve as biological vectors for the bluetongue virus (BTV) and the recently described Schmallenberg virus (SBV) in northern Europe. Since their recent emergence in this part of the continent, these diseases have caused considerable economic losses to the sheep and cattle industries. Much data is now available that describe the distribution, population dynamics, and feeding habits of these insects. However, little is known regarding the presence of Culicoides in unusual habitats such as peaty marshes, nor their potential vector capacity. This study evaluated Culicoides biting midges present in the bogs of a Belgian nature reserve compared to those residing at a nearby cattle farm. Culicoides were trapped in 2011 at four different sites (broadleaved and coniferous forested areas, open environments, and at a scientific station) located in the Hautes Fagnes Nature Reserve (Belgium). An additional light trap was operated on a nearby cattle farm. Very high numbers of biting midges were captured in the marshy area and most of them (70 to 95%) were Culicoides impunctatus, a potential vector of BTV and other pathogens. In addition, fewer numbers of C. obsoletus/C. scoticus species, C. chiopterus, and C. dewulfi were observed in the bogs compared to the farm. The wet environment and oligotrophic nature of the soil were probably responsible for these changes in the respective populations. A total of 297,808 Culicoides midges belonging to 27 species were identified during this study and 3 of these species (C. sphagnumensis, C. clintoni and C. comosioculatus) were described in Belgium for the first time. [less ▲]

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See detailAre bovine muscarinic receptors activated during respiratory distress syndrome ?
Genicot, B.; Mouligneau, F.; Lekeux, Pierre ULg

in Smaldone, G. C.; Liebert, M. A. (Eds.) Journal of Aerosol Medicine : Deposition, Clearance, and Effects in the Lung (1993)

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See detailAre BVOC exchanges in agricultural ecosystems overestimated? Insights from fluxes measured in a maize field over a whole growing season
Bachy, Aurélie ULg; Aubinet, Marc ULg; Schoon, Niels et al

in Atmospheric Chemistry and Physics (2016), 16(8),

Although maize is the second most important crop worldwide, and the most important C4 crop, no study on biogenic volatile organic compounds (BVOCs) has yet been conducted on this crop at ecosystem scale ... [more ▼]

Although maize is the second most important crop worldwide, and the most important C4 crop, no study on biogenic volatile organic compounds (BVOCs) has yet been conducted on this crop at ecosystem scale and over a whole growing season. This has led to large uncertainties in cropland BVOC emission estimations. This paper seeks to fill this gap by presenting, for the first time, BVOC fluxes measured in a maize field at ecosystem scale (using the disjunct eddy covariance by mass scanning technique) over a whole growing season in Belgium. The maize field emitted mainly methanol, although exchanges were bi-directional. The second most exchanged compound was acetic acid, which was taken up mainly in the growing season. Bi-directional exchanges of acetaldehyde, acetone and other oxygenated VOCs also occurred, whereas the terpenes, benzene and toluene exchanges were small, albeit significant. Surprisingly, BVOC exchanges were of the same order of magnitude on bare soil and on well developed vegetation, suggesting that soil is a major BVOC reservoir in agricultural ecosystems. Quantitatively, the maize BVOC emissions observed were lower than those reported in other maize, crops and grasses studies. The standard emission factors (SEFs) estimated in this study (231 ± 19 µg m−2 h−1 for methanol, 8 ± 5 µg m−2 h−1 for isoprene and 4 ± 6 µg m−2 h−1 for monoterpenes) were also much lower than those currently used by models for C4 crops, particularly for terpenes. These results suggest that maize fields are small BVOC exchangers in north-western Europe, with a lower BVOC emission impact than that modelled for growing C4 crops in this part of the world. They also reveal the high variability in BVOC exchanges across world regions for maize and suggest that SEFs should be estimated for each region separately. [less ▲]

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See detailAre BVOC exchanges in agricultural ecosystems overestimated? Insights from fluxes measured in a maize field over a whole growing season
Bachy, Aurélie ULg; Aubinet, Marc ULg; Schoon, Niels et al

Conference (2016, April 18)

This oral communication aims to present the main outputs of the BVOC (Biogenic Volatile Organic Compounds) flux measurement campaign performed on a maize field in Belgium. It begins by highligthing the ... [more ▼]

This oral communication aims to present the main outputs of the BVOC (Biogenic Volatile Organic Compounds) flux measurement campaign performed on a maize field in Belgium. It begins by highligthing the interest of investigating BVOC exchanges on maize; then measurement techniques are briefly presented. The second half of the communication aims to present and discuss the main outputs of this measurement campaign (similar BVOC composition, lower exchange rate than other maize and cropland/grassland studies, significant importance of soil in ecosystem exchanges, strong differences between exchanges rates observed in this study and those used by up-scaling models). [less ▲]

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