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Hernandez Velasco, MarcoORCID iD iconorcid.org/0000-0001-6805-2112
Publikasjoner (10 av 17) Visa alla publikasjoner
Hernandez Velasco, M. (2020). Treatments for induction of cold hardiness in Picea abies (L.) Karst. and Pinus sylvestris L. seedlings pre-cultivated under light-emitting diodes–impact of photoperiod and temperature including energy consumption and seedling quality after cold storage. Scandinavian Journal of Forest Research
Åpne denne publikasjonen i ny fane eller vindu >>Treatments for induction of cold hardiness in Picea abies (L.) Karst. and Pinus sylvestris L. seedlings pre-cultivated under light-emitting diodes–impact of photoperiod and temperature including energy consumption and seedling quality after cold storage
2020 (engelsk)Inngår i: Scandinavian Journal of Forest Research, ISSN 0282-7581, E-ISSN 1651-1891Artikkel i tidsskrift (Fagfellevurdert) In press
Abstract [en]

In Nordic climates, the weather allows a narrow time window during spring and summer for forest seedlings to be transplanted from indoor growth to outdoor conditions. If a new method for year-round cultivation under LED lamps is to be successfully introduced in forest nurseries, a cold storage phase for batches produced outside of the vegetation period needs to be included in the concept. Different short-day treatments for induction of cold hardiness in very young seedlings of Picea abies and Pinus sylvestris cultivated solely under LED lamps were investigated. The study compared a combination of two photoperiods (5 h or 8 h) at three different temperatures (5°C, 10°C or 20°C) applied during five weeks. Chlorophyll fluorescence, shoot electrolyte leakage and molecular testing for gene expression of cold acclimation were used to assess the treatments. After a period of three months in cold storage at 2°C, the vitality of the seedlings was evaluated using a root growth capacity test. Lower temperatures during the treatments, especially for Pinus sylvestris, had a significant effect on inducing cold hardiness. The results showed that the photoperiod should not be overly reduced to allow photosynthesis and generation of carbohydrate reserves but it could be optimized to reduce electricity consumption. © 2020, © 2020 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group.

Emneord
Cold hardiness, containerized forest seedlings, photoperiod and temperature, seedling cold storage, seedling quality, short-day treatments, year-round cultivation under LED lamps, Cold storage, Electrolytes, Energy utilization, Gene expression, Light emitting diodes, Plants (botany), Seed, LEd lamps, Forestry
HSV kategori
Forskningsprogram
Energi och samhällsbyggnad
Identifikatorer
urn:nbn:se:du-31814 (URN)10.1080/02827581.2020.1718199 (DOI)2-s2.0-85078399653 (Scopus ID)
Tilgjengelig fra: 2020-02-03 Laget: 2020-02-03 Sist oppdatert: 2020-02-03bibliografisk kontrollert
Hernandez Velasco, M. & Mattsson, A. (2019). Light quality and intensity of light-emitting diodes during pre-cultivation of Picea abies (L.) Karst. and Pinus sylvestris L. seedlings - impact on growth performance, seedling quality and energy consumption. Scandinavian Journal of Forest Research, 34(3), 159-177
Åpne denne publikasjonen i ny fane eller vindu >>Light quality and intensity of light-emitting diodes during pre-cultivation of Picea abies (L.) Karst. and Pinus sylvestris L. seedlings - impact on growth performance, seedling quality and energy consumption
2019 (engelsk)Inngår i: Scandinavian Journal of Forest Research, ISSN 0282-7581, E-ISSN 1651-1891, Vol. 34, nr 3, s. 159-177Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Three different LED lamps with continuous spectra were compared against commonly used fluorescent lights. The lamps were characterized by light output, energy consumption and spectral quality for plant growth. The biological effects of light quality were compared by pre-cultivating seedlings of Picea abies (L.) Karst. and Pinus sylvestris L. under each spectrum for 35 days in a growth chamber with controlled temperature, humidity and photoperiod. The seedlings were then transplanted and cultivated for one vegetation period at the nursery, then planted outdoors on a forest field trial and followed for three years. The seedlings showed similar growth performance for all spectra tested. LED lamps have several advantages to fluorescent light such as energy consumption, longer life span and adjustable light intensity. Regarding light intensity the effects on growth performance were studied for both species using the most promising LED spectra. The photosynthetically active radiation (PAR) was maintained at 50, 100, 200 and 400 mu mol m(-2) s(-1). Unlike energy consumption, seedling development did not display a linear relationship to light intensity. Instead, the results show an optimum light level between 100 and 200 mu mol m(-2) s(-1) for the shade tolerant Picea abies seedlings and a level of around 200 mu mol m(-2) s(-1) for the more shade intolerant Pinus sylvestris seedlings.

sted, utgiver, år, opplag, sider
Taylor & Francis, 2019
Emneord
Cultivation under LED lamps, growth performance and quality of forest seedlings, light quality, light intensity, energy consumption
HSV kategori
Forskningsprogram
Energi, skog och byggd miljö
Identifikatorer
urn:nbn:se:du-29621 (URN)10.1080/02827581.2019.1578404 (DOI)000459142200001 ()
Tilgjengelig fra: 2019-03-07 Laget: 2019-03-07 Sist oppdatert: 2019-03-07bibliografisk kontrollert
Hernandez Velasco, M. & Mattsson, A. (2016). Swedish experiences and visions on the production of containerized seedlings. In: Palle Madsen (Ed.), : . Paper presented at Udviklingskonference: Dækrodsplanter; Skovskolen i Nødebo, 9 March 2016.
Åpne denne publikasjonen i ny fane eller vindu >>Swedish experiences and visions on the production of containerized seedlings
2016 (engelsk)Inngår i: / [ed] Palle Madsen, 2016Konferansepaper, Oral presentation only (Annet vitenskapelig)
HSV kategori
Forskningsprogram
Energi, skog och byggd miljö, Zephyr, EU projekt inom 7:e ramprogrammet, europeiskt samverkansprojekt för utveckling av ny energisnål och miljövänlig teknik för produktion av skogsplantor
Identifikatorer
urn:nbn:se:du-21399 (URN)
Konferanse
Udviklingskonference: Dækrodsplanter; Skovskolen i Nødebo, 9 March 2016
Forskningsfinansiär
EU, FP7, Seventh Framework Programme, 308313
Tilgjengelig fra: 2016-05-02 Laget: 2016-05-02 Sist oppdatert: 2016-05-20bibliografisk kontrollert
Hernandez Velasco, M., Pérez-Mora, N. & Marras, T. (2016). Using Hybrid Solar Photovoltaic + Combined Heat and Power Systems (PV+CHP) to Enable Industrial Scale Indoor Plant Cultivation: a Feasibility Study. In: : . Paper presented at 11th ISES EuroSun Conference, Mallorca, Spain; 14 October 11-14, 2016.
Åpne denne publikasjonen i ny fane eller vindu >>Using Hybrid Solar Photovoltaic + Combined Heat and Power Systems (PV+CHP) to Enable Industrial Scale Indoor Plant Cultivation: a Feasibility Study
2016 (engelsk)Konferansepaper, Oral presentation only (Annet vitenskapelig)
Abstract [en]

A rapid population growth linked to intensive agriculture has originated several problems such as soil degradation, groundwater depletion, forestland transformation, and eutrophication of aquatic systems. Vertical farming offers an alternative for producing plants indoors in a resources and space efficient manner, reducing leakage of chemicals, optimizing water and land use, and allowing year-round cultivation. Controlled environment agriculture (CEA) also enables urban residents to access locally grown plants that would have otherwise been imported from far away, reducing transport and storage emissions. This comes with a caveat: the energy loads increase to provide artificial illumination and keep an optimal climate. To address this issue, the present work studies the feasibility of using a hybrid photovoltaics and combined heat and power system (PV+CHP) to satisfy the energy demands of an industrial-sized growth room. For this, different European locations and climates have been considered as well as various growth protocols.

Emneord
PV+CHP; Solar-powered growth rooms; Controlled-environment agriculture; Vertical farming
HSV kategori
Forskningsprogram
Energi, skog och byggd miljö
Identifikatorer
urn:nbn:se:du-23475 (URN)
Konferanse
11th ISES EuroSun Conference, Mallorca, Spain; 14 October 11-14, 2016
Tilgjengelig fra: 2016-11-25 Laget: 2016-11-25 Sist oppdatert: 2016-11-28bibliografisk kontrollert
Chiatante, D., Radoglou, K., Sismanis, N., Smirnakou, S., Mattsson, A., Hernandez Velasco, M., . . . Ferreira, R. (2015). ZEPHYR Project – Deliverable D3.3: Final report on growth tests and biological validation.
Åpne denne publikasjonen i ny fane eller vindu >>ZEPHYR Project – Deliverable D3.3: Final report on growth tests and biological validation
Vise andre…
2015 (engelsk)Rapport (Annet vitenskapelig)
HSV kategori
Forskningsprogram
Energi, skog och byggd miljö, Zephyr, EU projekt inom 7:e ramprogrammet, europeiskt samverkansprojekt för utveckling av ny energisnål och miljövänlig teknik för produktion av skogsplantor
Identifikatorer
urn:nbn:se:du-21403 (URN)
Prosjekter
Zephyr Project
Forskningsfinansiär
EU, FP7, Seventh Framework Programme, 308313
Tilgjengelig fra: 2016-05-02 Laget: 2016-05-02 Sist oppdatert: 2016-05-03bibliografisk kontrollert
Mattsson, A., Hernandez Velasco, M., Rusu, C., Pietrzak, M., Ferreira, R., Radoglou, K., . . . Kotilainen, T. (2015). ZEPHYR Project – Deliverable D7.6: Articles and peer-reviewed papers.
Åpne denne publikasjonen i ny fane eller vindu >>ZEPHYR Project – Deliverable D7.6: Articles and peer-reviewed papers
Vise andre…
2015 (engelsk)Rapport (Annet (populærvitenskap, debatt, mm))
HSV kategori
Forskningsprogram
Energi, skog och byggd miljö, Zephyr, EU projekt inom 7:e ramprogrammet, europeiskt samverkansprojekt för utveckling av ny energisnål och miljövänlig teknik för produktion av skogsplantor
Identifikatorer
urn:nbn:se:du-21404 (URN)
Prosjekter
Zephyr Project
Forskningsfinansiär
EU, FP7, Seventh Framework Programme, 308313
Tilgjengelig fra: 2016-05-02 Laget: 2016-05-02 Sist oppdatert: 2016-11-24bibliografisk kontrollert
Hernandez Velasco, M. & Mattsson, A. (2014). A silvicultural practice to facilitate forest restoration: a new seedling cultivation technology for regeneration establishment. In: John A. Parrotta, Cynthia F. Moser, Amy J. Scherzer, Nancy E. Koerth and Daryl R. Lederle (Ed.), The International Forestry Review Vol.16 (5), 2014: . Paper presented at Sustaining Forests, Sustaining People: The Role of Research. XXIV IUFRO World Congress, 5-11 October 2014, Salt Lake City, USA (pp. 129). The Commonwealth Forestry Association, www.cfa-international.org, 16(5)
Åpne denne publikasjonen i ny fane eller vindu >>A silvicultural practice to facilitate forest restoration: a new seedling cultivation technology for regeneration establishment
2014 (engelsk)Inngår i: The International Forestry Review Vol.16 (5), 2014 / [ed] John A. Parrotta, Cynthia F. Moser, Amy J. Scherzer, Nancy E. Koerth and Daryl R. Lederle, The Commonwealth Forestry Association, www.cfa-international.org , 2014, Vol. 16, nr 5, s. 129-Konferansepaper, Poster (with or without abstract) (Annet vitenskapelig)
Abstract [en]

Forest restoration has become a primary task, not only to cope with an increasing demand on forest products, but also to fi ghtclimate change and compensate for an accelerated global deforestation. However, many of the current practices used in forestrynurseries to produce forest planting stock have adverse effects on the environment. The main objective of the ZEPHYR project,funded by the European Commission under the Seventh Framework Programme (FP7), is to develop an innovative zero-impacttechnology for the pre-cultivation of forest regeneration materials that is not affected by the outdoor climate. Among the maincomponents to be improved are artifi cial lighting sources used for cultivation. Traditional fl uorescence lamps are to be replacedby LED grow lights with spectra tailored to the seedlings’ needs. The present work investigates biological responses of Piceaabies and Pinus sylvestris to six different light spectra. The pre-cultivation has been done following standard growth protocolsduring 5 weeks with a photoperiod of 16 h at 100 μmol/m2/s. This has been done under controlled closed conditions with a roomtemperature of 20 °C and a relative humidity of 60%. The analyses have shown clear differences among the treatments and theiradapting capacity when transplanted.

sted, utgiver, år, opplag, sider
The Commonwealth Forestry Association, www.cfa-international.org, 2014
Emneord
Forest restoration, LED grow lights, nursery production, containerized planting stock
HSV kategori
Forskningsprogram
Energi, skog och byggd miljö, Zephyr, EU projekt inom 7:e ramprogrammet, europeiskt samverkansprojekt för utveckling av ny energisnål och miljövänlig teknik för produktion av skogsplantor
Identifikatorer
urn:nbn:se:du-16433 (URN)
Konferanse
Sustaining Forests, Sustaining People: The Role of Research. XXIV IUFRO World Congress, 5-11 October 2014, Salt Lake City, USA
Forskningsfinansiär
EU, FP7, Seventh Framework Programme, 308313
Tilgjengelig fra: 2014-11-20 Laget: 2014-11-20 Sist oppdatert: 2016-05-03bibliografisk kontrollert
Hernandez Velasco, M. & Mattsson, A. (2014). Cultivation of forest regeneration materials under artificial radiant sources—effects of light intensity on energy consumptionand seedling development. In: John A. Parrotta, Cynthia F. Moser, Amy J. Scherzer, Nancy E. Koerth and Daryl R. Lederle (Ed.), The International Forestry Review Vol.16 (5), 2014: . Paper presented at Sustaining Forests, Sustaining People: The Role of Research. XXIV IUFRO World Congress, 5-11 October 2014, Salt Lake City, USA (pp. 300-300). , 16(5)
Åpne denne publikasjonen i ny fane eller vindu >>Cultivation of forest regeneration materials under artificial radiant sources—effects of light intensity on energy consumptionand seedling development
2014 (engelsk)Inngår i: The International Forestry Review Vol.16 (5), 2014 / [ed] John A. Parrotta, Cynthia F. Moser, Amy J. Scherzer, Nancy E. Koerth and Daryl R. Lederle, 2014, Vol. 16, nr 5, s. 300-300Konferansepaper, Poster (with or without abstract) (Annet vitenskapelig)
Abstract [en]

In times of major environmental challenges and increasing demand for forest products, planted forests have acknowledgedadvantages compared to other land uses. Despite not being able to completely take the place of natural forests, planted ones have,if properly managed, great potential to contribute in addressing these problems. Besides the ecological benefi ts such as carbonsequestration, planted forests can help meet the demand for wood products without further depletion of the natural forest. Forestrestoration, rehabilitation, and reforestation are limited by the capacity for producing forest regeneration materials. Often, asproduction is intensifi ed at forest nurseries, the practices begin to have an adverse impact on the environment and stop being trulysustainable. One of the main issues in nurseries is the energy consumption for grow lights during periods of short daylight.By using high-effi ciency LED grow lamps and adjusting the light intensity, this study aimed to reduce the energy consumptionfrom lighting per seedling without compromising seedling development. The precultivation of Picea abies and Pinus sylvestrisseedlings was done during 5 weeks under controlled conditions at 20 °C and a relative humidity of 60%. The photoperiod was16 hours at an intensity ranging from 50 to 350 μmol/m2/s in intervals of 50 μmol/m2/s intervals.

Emneord
Containerized planting stock production, LED grow lights, Picea abies, Pinus sylvestris, energy consumption
HSV kategori
Forskningsprogram
Energi, skog och byggd miljö, Zephyr, EU projekt inom 7:e ramprogrammet, europeiskt samverkansprojekt för utveckling av ny energisnål och miljövänlig teknik för produktion av skogsplantor
Identifikatorer
urn:nbn:se:du-16434 (URN)
Konferanse
Sustaining Forests, Sustaining People: The Role of Research. XXIV IUFRO World Congress, 5-11 October 2014, Salt Lake City, USA
Tilgjengelig fra: 2014-11-20 Laget: 2014-11-20 Sist oppdatert: 2016-05-03bibliografisk kontrollert
Hernandez Velasco, M. & Mattsson, A. (2014). Energy efficiency in intensified production of forest regeneration materials – design of a photovoltaic system for sustainably powering an innovative forestry incubator. In: John A. Parrotta, Cynthia F. Moser, Amy J. Scherzer, Nancy E. Koerth and Daryl R. Lederle (Ed.), The International Forestry Review Vol.16 (5), 2014: . Paper presented at Sustaining Forests, Sustaining People: The Role of Research. XXIV IUFRO World Congress, 5-11 October 2014, Salt Lake City, USA (pp. 393-393). , 16(5)
Åpne denne publikasjonen i ny fane eller vindu >>Energy efficiency in intensified production of forest regeneration materials – design of a photovoltaic system for sustainably powering an innovative forestry incubator
2014 (engelsk)Inngår i: The International Forestry Review Vol.16 (5), 2014 / [ed] John A. Parrotta, Cynthia F. Moser, Amy J. Scherzer, Nancy E. Koerth and Daryl R. Lederle, 2014, Vol. 16, nr 5, s. 393-393Konferansepaper, Poster (with or without abstract) (Annet vitenskapelig)
Abstract [en]

Planted forests can contribute addressing problems of global concern such as climate change mitigation, biodiversity lost and pressure on ecosystems due to high demand of forestry products. However, in order to be able to profit from these benefits sustainably, production rates of forest regeneration materials should be higher than the harvesting rates. Nevertheless, intensive production methods often bring along adverse consequences for the environment. In the frame of the ZEPHYR project, funded by the European Commission under the Seventh Framework Programme (FP7), innovative and cost-friendly technologies for the pre-cultivation are being developed. They will be integrated into a functional and transportable system for a large scale production of seedlings, with zero-impact on the environment and not affected by outdoor conditions. To achieve this, high efficiency devices with low energy consumption will be used and the incubator will be powered by solar energy. This work aims to present the efforts made to reduce the energy loads and optimize the photovoltaic (PV) system. The power system will also be capable of connecting to the electricity grid, using a diesel generator as a back-up, and a battery bank with at least one day of autonomy (up to 7 kWh/day) in central European latitudes.   

Emneord
Planted forest, photovoltaic system, climate change mitigation, incubator, forest regeneration materials
HSV kategori
Forskningsprogram
Energi, skog och byggd miljö, Zephyr, EU projekt inom 7:e ramprogrammet, europeiskt samverkansprojekt för utveckling av ny energisnål och miljövänlig teknik för produktion av skogsplantor
Identifikatorer
urn:nbn:se:du-16436 (URN)
Konferanse
Sustaining Forests, Sustaining People: The Role of Research. XXIV IUFRO World Congress, 5-11 October 2014, Salt Lake City, USA
Forskningsfinansiär
EU, FP7, Seventh Framework Programme, 308313
Tilgjengelig fra: 2014-11-20 Laget: 2014-11-20 Sist oppdatert: 2016-05-03bibliografisk kontrollert
Hernandez Velasco, M. & Mattsson, A. (2014). Long night treatment for induction of cold hardiness using artificial lights: effects of photoperiod on seedling storabilityand energy consumption. In: John A. Parrotta, Cynthia F. Moser, Amy J. Scherzer, Nancy E. Koerth and Daryl R. Lederle (Ed.), The International Forestry Review Vol.16 (5), 2014: . Paper presented at Sustaining Forests, Sustaining People: The Role of Research. XXIV IUFRO World Congress, 5-11 October 2014, Salt Lake City, USA (pp. 379-379). , 16(5)
Åpne denne publikasjonen i ny fane eller vindu >>Long night treatment for induction of cold hardiness using artificial lights: effects of photoperiod on seedling storabilityand energy consumption
2014 (engelsk)Inngår i: The International Forestry Review Vol.16 (5), 2014 / [ed] John A. Parrotta, Cynthia F. Moser, Amy J. Scherzer, Nancy E. Koerth and Daryl R. Lederle, 2014, Vol. 16, nr 5, s. 379-379Konferansepaper, Poster (with or without abstract) (Annet vitenskapelig)
Abstract [en]

Human-assisted forest regeneration in Nordic climates is considerably limited by the harsh outdoor conditions. There is onlya small open window of time during the summer when the weather is favorable for transplantation and establishment ofpre-cultivated seedlings in open land. Greenhouses and modern growth chambers help to cope with this limitation by allowingyear-round seedling cultivation. Nonetheless, production levels are constrained to the cold storage capacity during the nontransplantingseason. This storage is in turn dependent on the ability of the conifer to adapt to freezing temperatures and withstand theoverall stress associated with cold hardening. Long night treatments can induce dormancy with cessation of growth and terminalbuds initiation, leading to a better cold resistance. When growing forest regeneration materials under artifi cial lights, the lengthsof the long night treatment and the photoperiod will have a signifi cant impact not only on the biological response of the seedlingsbut also on the energy consumption, and thus on the CO2 emissions. The aim of this work was to explore different long nighttreatment regimes for induction of cold hardiness in Picea abies and Pinus sylvestris seedlings using artifi cial lights. This wasdone with the purpose of studying the relationship between the energy consumption and the biological responses.

Emneord
Forest restoration, LED grow lights, forest nurseries, long-night treatment, cold hardiness
HSV kategori
Forskningsprogram
Energi, skog och byggd miljö, Zephyr, EU projekt inom 7:e ramprogrammet, europeiskt samverkansprojekt för utveckling av ny energisnål och miljövänlig teknik för produktion av skogsplantor
Identifikatorer
urn:nbn:se:du-16435 (URN)
Konferanse
Sustaining Forests, Sustaining People: The Role of Research. XXIV IUFRO World Congress, 5-11 October 2014, Salt Lake City, USA
Tilgjengelig fra: 2014-11-20 Laget: 2014-11-20 Sist oppdatert: 2016-05-03bibliografisk kontrollert
Organisasjoner
Identifikatorer
ORCID-id: ORCID iD iconorcid.org/0000-0001-6805-2112