LIVIVO - Search results -

Search results

Result 1 - 10 of total 20

Search options

Article ; Online: Relationship between tropical leaf phenology and ecosystem productivity using phenocameras

Alberton, Bruna / Martin, Thomas C.M. / Da Rocha, Humberto R. / Richardson, Andrew D. / Moura, Magna S.B. / Torres, Ricardo S. / Morellato, Leonor Patricia Cerdeira

Frontiers in Environmental Science

2023 Volume 11

Abstract: Introduction: The interplay of water and light, regarded as the main driver of tropical plant dynamics, determines leaf phenology and ecosystem productivity. Leaf phenology has been discussed as a key variable to explain photosynthetic seasonality in ... ...

Abstract	Introduction: The interplay of water and light, regarded as the main driver of tropical plant dynamics, determines leaf phenology and ecosystem productivity. Leaf phenology has been discussed as a key variable to explain photosynthetic seasonality in evergreen tropical forests, but the question is still open for seasonally tropical ecosystems. In the search for implementing long-term phenology monitoring in the tropics, phenocameras have proven to be an accurate method to estimate vegetative phenology in tropical communities. Here, we investigated the temporal patterns of leaf phenology and their relation to gross primary productivity (GPP) in a comparative study across three contrasting tropical biomes: dry forest (caatinga), woodland savanna (cerrado), and rainforest (Atlantic Forest). Methods: We monitored leaf phenology (phenocameras) and estimated gross primary productivity (eddy-covariance) continuously over time at three study sites. We investigated the main drivers controlling leaf phenology and tested the performance of abiotic (climate) and biotic (phenology) factors to explain gross primary productivity across sites. Results: We found that camera-derived indices presented the best relationships with gross primary productivity across all sites. Gross primary productivity seasonality was controlled by a gradient of water vs. light, where caatinga dry forest was water-limited, cerrado vegetation responded to water seasonality and light, and rainforest was mainly controlled by light availability. Vegetation phenology was tightly associated with productivity in the driest ecosystem (caatinga), where productivity was limited to the wet season, and the camera-derived index (Gcc) was the best proxy for gross primary productivity. Discussion: Leaf phenology increased their relative importance over gross primary productivity seasonality at less seasonal sites (cerrado and rainforest), where multiple leafing strategies influenced carbon exchanges. Our multi-site comparison, along with fine-scale temporal ...
Keywords	GPP ; atlantic forest ; caatinga ; cerrado ; drivers ; leaf phenology ; phenocameras ; productivity
Language	English
Publishing country	nl
Document type	Article ; Online
ZDB-ID	2741535-1
ISSN	2296-665X
ISSN	2296-665X
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

Full text online

Full text

Order via subito

This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

Details ▾
- Full text online
- Order with fees

Article ; Online: Mapping the root systems of individual trees in a natural community using genotyping‐by‐sequencing

Osborne, Owen G. / Dobreva, Mariya P. / Papadopulos, Alexander S. T. / de Moura, Magna S. B. / Brunello, Alexandre T. / de Queiroz, Luciano P. / Pennington, Toby / Lloyd, Jon / Savolainen, V.

New Phytologist. 2023 May, v. 238, no. 3 p.1305-1317

2023

Abstract: The architecture of root systems is an important driver of plant fitness, competition and ecosystem processes. However, the methodological difficulty of mapping roots hampers the study of these processes. Existing approaches to match individual plants to ...

Abstract	The architecture of root systems is an important driver of plant fitness, competition and ecosystem processes. However, the methodological difficulty of mapping roots hampers the study of these processes. Existing approaches to match individual plants to belowground samples are low throughput and species specific. Here, we developed a scalable sequencing‐based method to map the root systems of individual trees across multiple species. We successfully applied it to a tropical dry forest community in the Brazilian Caatinga containing 14 species. We sequenced all 42 individual shrubs and trees in a 14 × 14 m plot using double‐digest restriction site‐associated sequencing (ddRADseq). We identified species‐specific markers and individual‐specific haplotypes from the data. We matched these markers to the ddRADseq data from 100 mixed root samples from across the centre (10 × 10 m) of the plot at four different depths using a newly developed R package. We identified individual root samples for all species and all but one individual. There was a strong significant correlation between belowground and aboveground size measurements, and we also detected significant species‐level root‐depth preference for two species. The method is more scalable and less labour intensive than the current techniques and is broadly applicable to ecology, forestry and agricultural biology.
Keywords	caatinga ; ecosystems ; forestry ; genotyping by sequencing ; haplotypes ; labor ; tropical dry forests
Language	English
Dates of publication	2023-05
Size	p. 1305-1317.
Publishing place	John Wiley & Sons, Ltd
Document type	Article ; Online
Note	JOURNAL ARTICLE
ZDB-ID	208885-x
ISSN	1469-8137 ; 0028-646X
ISSN (online)	1469-8137
ISSN	0028-646X
DOI	10.1111/nph.18645
Database	NAL-Catalogue (AGRICOLA)

Full text online

Accessible to users with ZB MED library card

In stock of ZB MED Bonn / Germany

Z 868: Show issues

Order via subito

Inter-library loan at ZB MED

Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

Details ▾

Article: Realistic and simplified models of plant and leaf area indices for a seasonally dry tropical forest

de Queiroga Miranda, Rodrigo / Miranda, Rodrigo de Queiroga / Bezerra Nóbrega, Rodolfo Luiz / de Moura, Magna Soelma Beserra / Galvíncio, Josiclêda Domiciano / Moura, Magna Soelma Beserra de / Nóbrega, Rodolfo Luiz Bezerra / Raghavan, Srinivasan / Srinivasan, Raghavan

ITC journal. 2020 Mar., v. 85

2020

Abstract: Leaf Area Index (LAI) models that consider all phenological stages have not been developed for the Caatinga, the largest seasonally dry tropical forest in South America. LAI models that are currently used show moderate to high covariance when compared to ...

Abstract	Leaf Area Index (LAI) models that consider all phenological stages have not been developed for the Caatinga, the largest seasonally dry tropical forest in South America. LAI models that are currently used show moderate to high covariance when compared to in situ data, but they often lack accuracy in the whole spectra of possible values and do not consider the impact that the stems and branches have over LAI estimates, which is of great influence in the Caatinga. In this study, we develop and assess PAI (Plant Area Index) and LAI models by using ground-based measurements and satellite (Landsat) data. The objective of this study was to create and test new empirical models using a multi-year and multi-source of reflectance data. The study was based on measurements of photosynthetic photon flux density (PPFD) from above and below the canopy during the periods of 2011–2012 and 2016–2018. Through iterative processing, we obtained more than a million candidate models for estimating PAI and LAI. To clean up the small discrepancies in the extremes of each interpolated series, we smoothed out the dataset by fitting a logarithmic equation with the PAI data and the inverse contribution of WAI (Wood Area Index) to PAI, that is the portion of PAI that is actually LAI (LAIC). LAIC can be calculated as follows: LAIC=1-WAI/PAI). We subtracted the WAI values from the PAI to develop our in situ LAI dataset that was used for further analysis. Our in situ dataset was also used as a reference to compare our models with four other models used for the Caatinga, as well as the MODIS-derived LAI products (MCD15A3H/A2H). Our main findings were as follows: (i) Six models use NDVI (Normalized Difference Vegetation Index), SAVI (Soil-Adjusted Vegetation Index) and EVI (Enhanced Vegetation Index) as input, and performed well, with r2 ranging from 0.77 to 0.79 (PAI) and 0.76 to 0.81 (LAI), and RMSE with a minimum of 0.41 m2 m−2 (PAI) and 0.40 m2 m−2 (LAI). The SAVI models showed values 20% and 32% (PAI), and 21% and 15% (LAI) smaller than those found for the models that use EVI and NDVI, respectively; (ii) the other models (ten) use only two bands, and in contrast to the first six models, these new models may abstract other physical processes and components, such as leaves etiolation and increasing protochlorophyll. The developed models used the near-infrared band, and they varied only in relation to the inclusion of the red, green, and blue bands. (iii) All previously published models and MODIS-LAI underperformed against our calibrated models. Our study was able to provide several PAI and LAI models that realistically represent the phenology of the Caatinga.
Keywords	branches ; caatinga ; canopy ; covariance ; data collection ; empirical models ; equations ; etiolation ; Landsat ; leaf area index ; leaves ; normalized difference vegetation index ; phenology ; photons ; photosynthesis ; protochlorophyll ; reflectance ; tropical forests ; wood ; South America
Language	English
Dates of publication	2020-03
Publishing place	Elsevier B.V.
Document type	Article
ZDB-ID	2097960-5
ISSN	0303-2434 ; 0303-2434
ISSN (online)	0303-2434
ISSN	0303-2434
DOI	10.1016/j.jag.2019.101992
Database	NAL-Catalogue (AGRICOLA)

Order via subito

Article: The use of remote sensing for reliable estimation of net radiation and its components: a case study for contrasting land covers in an agricultural hotspot of the Brazilian semiarid region

Ferreira, Thomás R / Silva, Bernardo B. Da / Moura, Magna S. B. De / Verhoef, Anne / Nóbrega, Rodolfo L.B

Agricultural and forest meteorology. 2020 Sept. 15, v. 291

2020

Abstract: This study aims to ascertain the uncertainties related to the spatiotemporal estimation of net radiation, and its components, using remote sensing data. Geographical focus is an irrigated agricultural hotspot of the Brazilian semiarid region, for which ... ...

Abstract	This study aims to ascertain the uncertainties related to the spatiotemporal estimation of net radiation, and its components, using remote sensing data. Geographical focus is an irrigated agricultural hotspot of the Brazilian semiarid region, for which we also investigate the impact that contrasting land-cover types have on the upwelling radiation balance components, and hence on net radiation. Instantaneous (Rₙ) and daily (Rₙ,₂₄) values of net radiation were estimated based on OLI/TIRS-Landsat-8 images and key weather variables. In addition, we evaluated two models for downwelling shortwave (Rₛw), ten models for downwelling longwave radiation (Rₗw), and two models for derivation of Rₙ,₂₄. The accuracy of each model was evaluated with radiation measurements obtained from research quality sensors installed in micrometeorological towers. The best performances were found for the Allen model, Duarte model, and De Bruin model for Rₛw, Rₗw, and Rₙ,₂₄, respectively. The contrasting land-use types exhibited substantial differences in the biophysical variables and radiative properties that affect Rₙ. The albedo for the irrigated crops has average absolute values that are 0.01–0.03 greater than those found for the pristine caatinga, whereas the land surface temperature, LST, is 3–5 degrees smaller. However, Rₙ for these two distinctly different surface types was similar, as a result of a considerably lower surface emissivity in the caatinga. For rangeland, the albedo, LST, and hence the upwelling radiation had greater values than those found for the caatinga, which caused reduced values of Rₙ. The urban areas exhibited the lowest values of Rₙ, mainly as a consequence of their high albedo values. We show that when in-situ net radiation data are not available, remote sensing data combined with more readily available in-situ weather data can be used to derive spatiotemporal estimates of Rₙ. This facilitates the identification of anthropogenic impacts on the radiation at the land-surface and ultimately the energy balance, including the short-term seasonal and long-term effects.
Keywords	caatinga ; case studies ; energy balance ; forests ; irrigation ; land cover ; land use ; meteorological data ; meteorology ; models ; net radiation ; rangelands ; semiarid zones ; surface temperature ; terrestrial radiation
Language	English
Dates of publication	2020-0915
Publishing place	Elsevier B.V.
Document type	Article
Note	NAL-AP-2-clean
ZDB-ID	409905-9
ISSN	0168-1923
ISSN	0168-1923
DOI	10.1016/j.agrformet.2020.108052
Database	NAL-Catalogue (AGRICOLA)

Full text online

Accessible to users with ZB MED library card

In stock of ZB MED Bonn / Germany

Z 1961: Show issues

Order via subito

Inter-library loan at ZB MED

Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

Details ▾

Article: New method for estimating reference evapotranspiration and comparison with alternative methods in a fruit-producing hub in the semi-arid region of Brazil

de Souza, Luciana Sandra Bastos / Silva, Maiara Tatiane Lima / Alba, Elisiane / de Moura, Magna Soelma Beserra / da Cruz Neto, José Francisco / de Souza, Carlos André Alves / da Silva, Thieres George Freire

Theoretical and applied climatology. 2022 July, v. 149, no. 1-2

2022

Abstract: Analysing alternative methods for estimating reference evapotranspiration (ET0) is essential for improving the management of water resources, especially where meteorological data are not fully available for application of the standard Penman–Monteith (PM) ...

Abstract	Analysing alternative methods for estimating reference evapotranspiration (ET0) is essential for improving the management of water resources, especially where meteorological data are not fully available for application of the standard Penman–Monteith (PM) method. In this study, the aim was (a) to propose a model for estimating ET0 and (b) to investigate its application together with alternative methods in an area of fruit production in the semi-arid region of Brazil. The Souza-Silva model was generated to estimate ET0 and together with other original methods based on thermal-water variables and global incident solar radiation was tested relative to the PM method. The Souza-Silva method (ET0SS = − 0.00728 + 1.356325DPV + 0.174658Qg, where VPD is the water vapour-pressure deficit and Qg the global incident solar radiation) showed excellent performance in estimating ET0 with a low level of error (RMSE = 0.467 mm day⁻¹ and MBE = − 0.034 mm day⁻¹). Among the original alternative methods, those for Hargreaves (ET0HS) and Camargo (ET0C) models did not perform well in the region under study. The Benevides and Lopes (ET0BL) and Valiantzas1 (ET0V₁) methods gave excellent results; these were however even lower than methods based on the solar radiation. Compared to each of the original methods, the result of the Souza-Silva method showed greater precision and accuracy, with smaller estimation errors. It is concluded that this method, based on the water vapour-pressure deficit and solar radiation, can be used to estimate ET0 in places where data collection is limited.
Keywords	climatology ; data collection ; evapotranspiration ; fruits ; meteorological data ; models ; semiarid zones ; solar radiation ; vapor pressure deficit ; Brazil
Language	English
Dates of publication	2022-07
Size	p. 593-602.
Publishing place	Springer Vienna
Document type	Article
ZDB-ID	1463177-5
ISSN	1434-4483 ; 0177-798X
ISSN (online)	1434-4483
ISSN	0177-798X
DOI	10.1007/s00704-022-04069-6
Database	NAL-Catalogue (AGRICOLA)

Full text online

Accessible to users with ZB MED library card

Order via subito

Details ▾
- Full text online
- Order with fees

Article: Monitoring Energy Balance, Turbulent Flux Partitioning, Evapotranspiration and Biophysical Parameters of

Jardim, Alexandre Maniçoba da Rosa Ferraz / Morais, José Edson Florentino de / Souza, Luciana Sandra Bastos de / Souza, Carlos André Alves de / Araújo Júnior, George do Nascimento / Alves, Cléber Pereira / Silva, Gabriel Ítalo Novaes da / Leite, Renan Matheus Cordeiro / Moura, Magna Soelma Beserra de / de Lima, João L M P / Silva, Thieres George Freire da

Plants (Basel, Switzerland)

2023 Volume 12, Issue 13

Abstract: The in-situ quantification of turbulent flux and evapotranspiration (ET) is necessary to monitor crop performance in stressful environments. Although cacti can withstand stressful conditions, plant responses and plant-environment interactions remain ... ...

Abstract	The in-situ quantification of turbulent flux and evapotranspiration (ET) is necessary to monitor crop performance in stressful environments. Although cacti can withstand stressful conditions, plant responses and plant-environment interactions remain unclear. Hence, the objective of our study was to investigate the interannual and seasonal behaviour of components of the surface energy balance, environmental conditions, morphophysiological parameters, biomass yield and water relations in a crop of
Language	English
Publishing date	2023-07-06
Publishing country	Switzerland
Document type	Journal Article
ZDB-ID	2704341-1
ISSN	2223-7747
ISSN	2223-7747
DOI	10.3390/plants12132562
Database	MEDical Literature Analysis and Retrieval System OnLINE

Order via subito

Article ; Online: Mapping the root systems of individual trees in a natural community using genotyping-by-sequencing.

Osborne, Owen G / Dobreva, Mariya P / Papadopulos, Alexander S T / de Moura, Magna S B / Brunello, Alexandre T / de Queiroz, Luciano P / Pennington, R Toby / Lloyd, Jon / Savolainen, Vincent

The New phytologist

2022 Volume 238, Issue 3, Page(s) 1305–1317

Abstract	The architecture of root systems is an important driver of plant fitness, competition and ecosystem processes. However, the methodological difficulty of mapping roots hampers the study of these processes. Existing approaches to match individual plants to belowground samples are low throughput and species specific. Here, we developed a scalable sequencing-based method to map the root systems of individual trees across multiple species. We successfully applied it to a tropical dry forest community in the Brazilian Caatinga containing 14 species. We sequenced all 42 individual shrubs and trees in a 14 × 14 m plot using double-digest restriction site-associated sequencing (ddRADseq). We identified species-specific markers and individual-specific haplotypes from the data. We matched these markers to the ddRADseq data from 100 mixed root samples from across the centre (10 × 10 m) of the plot at four different depths using a newly developed R package. We identified individual root samples for all species and all but one individual. There was a strong significant correlation between belowground and aboveground size measurements, and we also detected significant species-level root-depth preference for two species. The method is more scalable and less labour intensive than the current techniques and is broadly applicable to ecology, forestry and agricultural biology.
MeSH term(s)	Trees/genetics ; Ecosystem ; Genotype ; Forests ; Forestry ; Plants ; Plant Roots
Language	English
Publishing date	2022-12-26
Publishing country	England
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	208885-x
ISSN	1469-8137 ; 0028-646X
ISSN (online)	1469-8137
ISSN	0028-646X
DOI	10.1111/nph.18645
Database	MEDical Literature Analysis and Retrieval System OnLINE

Full text online

Accessible to users with ZB MED library card

In stock of ZB MED Bonn / Germany

Z 868: Show issues

Order via subito

Inter-library loan at ZB MED

Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

Details ▾

Article ; Online: Assessment of water demands for irrigation using energy balance and satellite data fusion models in cloud computing: A study in the Brazilian semiarid region

Ferreira, Thomás R. / Maguire, Mitchell S. / da Silva, Bernardo B. / Neale, Christopher M.U. / Serrão, Edivaldo A.O. / Ferreira, Jéssica D. / de Moura, Magna S.B. / dos Santos, Carlos A.C. / Silva, Madson T. / Rodrigues, Lineu N. / Carvalho, Herica F.S.

Agricultural Water Management. 2023, p.108260-

2023 , Page(s) 108260–

Abstract: Assessment of irrigation in arid and semiarid regions is imperative to ensure the sustainable use of limited water resources and guarantee food production. Therefore, this study aimed to assess actual evapotranspiration - ETa derived from the Surface ... ...

Abstract	Assessment of irrigation in arid and semiarid regions is imperative to ensure the sustainable use of limited water resources and guarantee food production. Therefore, this study aimed to assess actual evapotranspiration - ETa derived from the Surface Energy Balance Algorithm for Land - SEBAL model with and without satellite image fusion as input of a soil water balance in a pilot area of sugarcane in the semiarid region of Brazil. A fusion of Landsat sensors' and Moderate Resolution Imaging Spectroradiometer - MODIS' images was completed through a Spatial and Temporal Adaptive Reflectance Fusion Model - STARFM script developed using cloud computing, and its performance in estimating key variables for the radiation balance was evaluated. ETa and irrigation were daily estimated between June, 2015 and May, 2016 by combining STARFM with SEBAL and evaluated according to the Bowen ratio technique and irrigation data. In addition, one-minute surface meteorological elements at the satellite overpass times were used. STARFM performed well with RMSE of 17.00 W m⁻², 2.28 K, 0.07, and 0.01 for Rₙ, Ts, NDVI, and albedo, respectively. The metrics employed to evaluate ETa estimates indicated that the SEBAL+STARFM has low mean errors (PBIAS = -2.75% and RMSE = 0.97 mm d⁻¹ and 16.66 mm month⁻¹) and high coefficient of determination (0.87 for daily ETa-ET₂₄, and 0.91 for monthly ETa), in comparison with SEBAL using Landsat-only images (PBIAS = -5.25%, RMSE = 0.97 mm d⁻¹ and 17.66 mm month⁻¹, r² = 0.92). Adding fused images resulted in a better fit of the estimated cumulative ET₂₄ curve to the measured ET₂₄. The water balance indicated that the cultivated cane suffered water stress, which was better represented by estimates using the ET₂₄ curve with the addition of fused images than Landsat images alone. Although this increase in temporal resolution of the estimated ET₂₄ data indicated a greater water consumption, it informs a quantity that would be sufficient to meet the water demand of the crops.
Keywords	Bowen ratio ; Landsat ; algorithms ; energy balance ; evapotranspiration ; food production ; irrigation ; models ; reflectance ; remote sensing ; semiarid zones ; soil water balance ; spectroradiometers ; sugarcane ; water management ; water stress ; Brazil ; google earth engine ; water right
Language	English
Publishing place	Elsevier B.V.
Document type	Article ; Online
Note	Pre-press version ; Use and reproduction
ZDB-ID	751144-9
ISSN	1873-2283 ; 0378-3774
ISSN (online)	1873-2283
ISSN	0378-3774
DOI	10.1016/j.agwat.2023.108260
Database	NAL-Catalogue (AGRICOLA)

In stock of ZB MED Bonn / Germany

Z 3189: Show issues

Order via subito

Inter-library loan at ZB MED

Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

Details ▾
- See ZB MED holdings
- Order with fees

Article ; Online: Sink or carbon source? how the Opuntia cactus agroecosystem interacts in the use of carbon, nutrients and radiation in the Brazilian semi-arid region

Jardim, Alexandre Maniçoba da Rosa Ferraz / Morais, José Edson Florentino de / Souza, Luciana Sandra Bastos de / Marin, Fabio Ricardo / Moura, Magna Soelma Beserra de / Morellato, L. Patrícia C. / Montenegro, Abelardo Antônio de Assunção / Ometto, Jean Pierre Henry Balbaud / de Lima, João L.M.P. / Dubeux Júnior, José Carlos Batista / Silva, Thieres George Freire da

Elsevier B.V. Journal of Hydrology. 2023 Oct., v. 625 p.130121-

2023

Abstract: Anthropogenic disturbances directly influence environmental processes and increase the concentration of carbon (C) in the atmosphere. Here, we compare the differences in the seasonality of the balance of carbon, energy, and radiation, as well as seek to ... ...

Abstract	Anthropogenic disturbances directly influence environmental processes and increase the concentration of carbon (C) in the atmosphere. Here, we compare the differences in the seasonality of the balance of carbon, energy, and radiation, as well as seek to identify the interrelationships between these environmental variables and their impact on the growth of Opuntia cactus. Data were acquired from an eddy covariance flux tower over a cactus crop agroecosystem (2019–2021) in the Brazilian semi-arid region. In addition, we use plant growth rates, carbon and nutrient stocks, evapotranspiration (ET) and water use efficiency (WUE), and radiation (RUE). We show that the closure of the surface energy balance was 71%, although there are minimal fluxes of available energy lost (29%) by unquantified processes. At all seasons, the highest net ecosystem CO₂ exchange (NEE) rate was between 11:00–13:00 (−5.75 μmol m⁻² s⁻¹). During the dry and wet-dry season, there was the lowest daily gross primary productivity (GPP) (2.5 μmol m⁻² s⁻¹) and net radiation—Rₙ (217.97 W m⁻²). Ecosystem respiration was more expressive during the wet season (2.41 μmol m⁻² s⁻¹), and maximum diurnal value of 2.65 μmol m⁻² s⁻¹. Furthermore, the latent heat flux was higher during the wet season (114.68 W m⁻²) and lowered in the dry season (9.39 W m⁻²). The net assimilation rate showed higher values during the dry-wet transition. The dry season presented higher nutrient use efficiency and WUE (14.77 g m⁻² mm⁻¹). The highest ET occurred during the wet season (227 mm), and RUE was 81.48% higher than in the dry season. Overall, the cactus was a potential C sink during the three years of assessment (NEE: −377 g C m⁻² year⁻¹; GPP: 881 g C m⁻² year⁻¹). The results help us to understand that most of the Rₙ energy is used in the sensible heat flux (58% ratio).
Keywords	Opuntia ; agroecosystems ; cacti and succulents ; carbon ; carbon dioxide ; carbon sinks ; dry season ; ecosystem respiration ; eddy covariance ; energy balance ; evapotranspiration ; gross primary productivity ; latent heat flux ; net assimilation rate ; nutrient use efficiency ; plant growth ; semiarid zones ; sensible heat flux ; water use efficiency ; wet season ; Rainfed cactus ; Net ecosystem CO2 exchange ; CAM plant
Language	English
Dates of publication	2023-10
Publishing place	Elsevier B.V.
Document type	Article ; Online
ZDB-ID	1473173-3
ISSN	1879-2707 ; 0022-1694
ISSN (online)	1879-2707
ISSN	0022-1694
DOI	10.1016/j.jhydrol.2023.130121
Database	NAL-Catalogue (AGRICOLA)

Full text online

Accessible to users with ZB MED library card

Order via subito

Details ▾
- Full text online
- Order with fees

Article ; Online: The use of mulch in cultivating the forage cactus optimizes yield in less time and increases the water use efficiency of the crop

Alves, Hygor Kristoph Muniz Nunes / Silva, Thieres George Freire da / Jardim, Alexandre Maniçoba da Rosa Ferraz / de Souza, Luciana Sandra Bastos / Araújo Júnior, George do Nascimento / de Souza, Carlos André Alves / Moura, Magna Soelma Beserra de / de Araújo, Gherman Garcia Leal / Campos, Fleming Sena / da Cruz Neto, José Francisco

Irrigation and Drainage. 2023 Feb., v. 72, no. 1 p.75-89

2023

Abstract: Measurements of crop evapotranspiration (ETC) and crop coefficients (kC) in cactus have not yet been adjusted for the phenological stage using conservation practices (i.e. mulching). In this study, soil water dynamics, ETC and kC were measured in the ... ...

Abstract	Measurements of crop evapotranspiration (ETC) and crop coefficients (kC) in cactus have not yet been adjusted for the phenological stage using conservation practices (i.e. mulching). In this study, soil water dynamics, ETC and kC were measured in the forage cactus under cultivation systems with (WM) and without (NM) the use of mulch in the semi‐arid region of Brazil. Opuntia stricta was subjected to irrigation depths based on a percentage of the reference evapotranspiration (ET₀) (rainfed, 25, 50, 75 and 100%) and to two systems of cultivation: WM and NM. Over time, the phenophases (ᵠPh) were established; the soil water balance components were calculated and the crop yield was evaluated at harvest. The use of 8.2 Mg ha⁻¹ mulch led to almost no reduced water consumption by the crop when compared to the NM system; however, the mulch did maximize yield, at 839°C day, when irrigated with 50% ET₀. The kC value was higher under the WM system, with the differences decreasing throughout the cycle (ᵠPhI, 36%; ᵠPhII, 27%; ᵠPhIII, 23%; ᵠPhIV‐HT, 17%; and ᵠPhIV‐RF, 14%). Therefore, the use of mulch in cultivating the cactus optimized forage production in less time and significantly increased the water use efficiency of the crop.
Keywords	Opuntia stricta ; cacti and succulents ; crop yield ; evapotranspiration ; forage ; forage production ; irrigation ; mulches ; phenology ; semiarid zones ; soil water ; soil water balance ; water use efficiency ; Brazil
Language	English
Dates of publication	2023-02
Size	p. 75-89.
Publishing place	John Wiley & Sons, Ltd
Document type	Article ; Online
Note	JOURNAL ARTICLE
ZDB-ID	2047418-0
ISSN	1531-0361 ; 1531-0353
ISSN (online)	1531-0361
ISSN	1531-0353
DOI	10.1002/ird.2758
Database	NAL-Catalogue (AGRICOLA)

Full text online

Accessible to users with ZB MED library card

In stock of ZB MED Bonn / Germany

Z 3143: Show issues

Order via subito

Inter-library loan at ZB MED

Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

Details ▾

To top

Full text online

More links

Kategorien

Order via subito

Full text online

More links

Kategorien

In stock of ZB MED Bonn / Germany

Order via subito

Inter-library loan at ZB MED

More links

Kategorien

Order via subito

Full text online

More links

Kategorien

In stock of ZB MED Bonn / Germany

Order via subito

Inter-library loan at ZB MED

Full text online

More links

Kategorien

Order via subito

More links

Kategorien

Order via subito

Full text online

More links

Kategorien

In stock of ZB MED Bonn / Germany

Order via subito

Inter-library loan at ZB MED

More links

Kategorien

In stock of ZB MED Bonn / Germany

Order via subito

Inter-library loan at ZB MED

Full text online

More links

Kategorien

Order via subito

Full text online

More links

Kategorien

In stock of ZB MED Bonn / Germany

Order via subito

Inter-library loan at ZB MED