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Article ; Online: Energy crop as an environmentally sustainable reclamation option for post-mining sites: a life cycle assessment of cassava planting in Vietnam

Tran, Ha P. / Luong, Anh D. / Van, Anh D. / Nguyen, Tuyet T. A.

Environ Sci Pollut Res. 2022 Jan., v. 29, no. 5 p.6722-6732

2022

Abstract: Using post-mining areas for planting energy crops has emerged as a promising and sustainable reclamation solution due to its potential contributions to environmental protection, land restoration, and especially energy security. However, to ensure the ... ...

Abstract	Using post-mining areas for planting energy crops has emerged as a promising and sustainable reclamation solution due to its potential contributions to environmental protection, land restoration, and especially energy security. However, to ensure the sustainability of this reclamation solution, its environmental performance needs to be thoroughly assessed case by case. Located in Ha Thuong Commune, Dai Tu District, Thai Nguyen Province in northern Vietnam, Nui Phao is the world’s largest tungsten mine. To restore post-mining sites at Nui Phao, cassava planting for ethanol production was one of the proposed measures. To support the decision-making, this study employs life cycle assessment to thoroughly evaluate the environmental performance and potential environmental benefits/costs of cassava-based reclamation system in terms of resource consumption and green house gas (GHG) emission. The results show that cassava-based reclamation might bring significant environmental benefits in terms of fossil fuel saving and GHGs reduction (i.e., reduce 50% fossil fuel consumption and 36% GHGs emission); however, it does not bring any benefit in terms of water and land resource consumption. Moreover, the results define cassava cultivation as the “hot spot” of the system, where innovations to enhance the yield and reduce water and fertilizer consumption are required to improve the environmental performance of the cassava-based reclamation system.
Keywords	cassava ; decision making ; energy ; energy crops ; energy use and consumption ; environmental performance ; ethanol production ; fertilizers ; fossil fuels ; greenhouse gases ; land resources ; land restoration ; life cycle assessment ; tungsten ; Vietnam
Language	English
Dates of publication	2022-01
Size	p. 6722-6732.
Publishing place	Springer Berlin Heidelberg
Document type	Article ; Online
ZDB-ID	1178791-0
ISSN	1614-7499 ; 0944-1344
ISSN (online)	1614-7499
ISSN	0944-1344
DOI	10.1007/s11356-021-16134-0
Database	NAL-Catalogue (AGRICOLA)

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Article: Quantifying the primary biotic resource use by fisheries: A global assessment

Luong, Anh D / De Laender, Frederik / Dewulf, Jo

Science of the total environment. 2020 June 01, v. 719

2020

Abstract: In this paper, the specific primary production required (SPPR expressed as kg-NPP/kg-fish in wet weight) of more than 1700 marine species were calculated directly from 96 published food web models using the newly developed SPPR calculation framework. The ...

Abstract	In this paper, the specific primary production required (SPPR expressed as kg-NPP/kg-fish in wet weight) of more than 1700 marine species were calculated directly from 96 published food web models using the newly developed SPPR calculation framework. The relationship between SPPR and other ecological factors were then statistically analyzed. Among- and within-species variability of SPPR were found to be both explained by trophic level (TL), suggesting similar mechanisms underpinning both sources of variability. Among species, we found that harvesting species at higher mean trophic levels (MTL) increases the mean SPPR by a factor of 19 per 1 unit increase in MTL. Based on our empirical relationship, the mean SPPR of more than 9000 marine species were predicted and subsequently used to assess the primary production required (PPR) to support fisheries in five major fishing countries in Europe. The results indicated that conventional approach to estimating PPR, which neglects food web ecology, can underestimate PPR by up to a factor of 5. Within species, we found that harvesting populations occupying a higher TL leads to a higher SPPR. For example, the SPPR of Atlantic cod in the Celtic Sea (TL = 4.75) was 5 times higher than in the Gilbert Bay (TL = 3.3). Our results, which are based on large amounts of field data, highlight the importance of properly accounting for ecological factors during the impact assessment of fisheries.
Keywords	environmental factors ; fisheries ; Gadus morhua ; harvesting ; models ; primary productivity ; trophic levels ; Europe
Language	English
Dates of publication	2020-0601
Publishing place	Elsevier B.V.
Document type	Article
ZDB-ID	121506-1
ISSN	1879-1026 ; 0048-9697
ISSN (online)	1879-1026
ISSN	0048-9697
DOI	10.1016/j.scitotenv.2020.137352
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Article ; Online: Quantifying the primary biotic resource use by fisheries: A global assessment.

Luong, Anh D / Dewulf, Jo / De Laender, Frederik

The Science of the total environment

2020 Volume 719, Page(s) 137352

Abstract	In this paper, the specific primary production required (SPPR expressed as kg-NPP/kg-fish in wet weight) of more than 1700 marine species were calculated directly from 96 published food web models using the newly developed SPPR calculation framework. The relationship between SPPR and other ecological factors were then statistically analyzed. Among- and within-species variability of SPPR were found to be both explained by trophic level (TL), suggesting similar mechanisms underpinning both sources of variability. Among species, we found that harvesting species at higher mean trophic levels (MTL) increases the mean SPPR by a factor of 19 per 1 unit increase in MTL. Based on our empirical relationship, the mean SPPR of more than 9000 marine species were predicted and subsequently used to assess the primary production required (PPR) to support fisheries in five major fishing countries in Europe. The results indicated that conventional approach to estimating PPR, which neglects food web ecology, can underestimate PPR by up to a factor of 5. Within species, we found that harvesting populations occupying a higher TL leads to a higher SPPR. For example, the SPPR of Atlantic cod in the Celtic Sea (TL = 4.75) was 5 times higher than in the Gilbert Bay (TL = 3.3). Our results, which are based on large amounts of field data, highlight the importance of properly accounting for ecological factors during the impact assessment of fisheries.
MeSH term(s)	Animals ; Europe ; Fisheries ; Fishes ; Food Chain ; Gadus morhua
Language	English
Publishing date	2020-02-16
Publishing country	Netherlands
Document type	Journal Article
ZDB-ID	121506-1
ISSN	1879-1026 ; 0048-9697
ISSN (online)	1879-1026
ISSN	0048-9697
DOI	10.1016/j.scitotenv.2020.137352
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Article ; Online: Energy crop as an environmentally sustainable reclamation option for post-mining sites: a life cycle assessment of cassava planting in Vietnam.

Tran, Ha P / Luong, Anh D / Van, Anh D / Nguyen, Tuyet T A

Environmental science and pollution research international

2021 Volume 29, Issue 5, Page(s) 6722–6732

Abstract	Using post-mining areas for planting energy crops has emerged as a promising and sustainable reclamation solution due to its potential contributions to environmental protection, land restoration, and especially energy security. However, to ensure the sustainability of this reclamation solution, its environmental performance needs to be thoroughly assessed case by case. Located in Ha Thuong Commune, Dai Tu District, Thai Nguyen Province in northern Vietnam, Nui Phao is the world's largest tungsten mine. To restore post-mining sites at Nui Phao, cassava planting for ethanol production was one of the proposed measures. To support the decision-making, this study employs life cycle assessment to thoroughly evaluate the environmental performance and potential environmental benefits/costs of cassava-based reclamation system in terms of resource consumption and green house gas (GHG) emission. The results show that cassava-based reclamation might bring significant environmental benefits in terms of fossil fuel saving and GHGs reduction (i.e., reduce 50% fossil fuel consumption and 36% GHGs emission); however, it does not bring any benefit in terms of water and land resource consumption. Moreover, the results define cassava cultivation as the "hot spot" of the system, where innovations to enhance the yield and reduce water and fertilizer consumption are required to improve the environmental performance of the cassava-based reclamation system.
MeSH term(s)	Animals ; Crops, Agricultural ; Life Cycle Stages ; Manihot ; Mining ; Vietnam
Language	English
Publishing date	2021-08-30
Publishing country	Germany
Document type	Journal Article
ZDB-ID	1178791-0
ISSN	1614-7499 ; 0944-1344
ISSN (online)	1614-7499
ISSN	0944-1344
DOI	10.1007/s11356-021-16134-0
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Re-evaluating Primary Biotic Resource Use for Marine Biomass Production: A New Calculation Framework.

Luong, Anh D / Schaubroeck, Thomas / Dewulf, Jo / De Laender, Frederik

Environmental science & technology

2015 Volume 49, Issue 19, Page(s) 11586–11593

Abstract: The environmental impacts of biomass harvesting can be quantified through the amount of net primary production required to produce one unit of harvested biomass (SPPR-specific primary production required). This paper presents a new calculation framework ... ...

Abstract	The environmental impacts of biomass harvesting can be quantified through the amount of net primary production required to produce one unit of harvested biomass (SPPR-specific primary production required). This paper presents a new calculation framework that explicitly takes into account full food web complexity and shows that the resulting SPPR for toothed whales in the Icelandic marine ecosystem is 2.8 times higher than the existing approach based on food web simplification. In addition, we show that our new framework can be coupled to food web modeling to examine how uncertainty on ecological data and processes can be accounted for while estimating SPPR. This approach reveals that an increase in the degree of heterotrophy by flagellates from 0% to 100% results in a two-fold increase in SPPR estimates in the Barents Sea. It also shows that the estimated SPPR is between 3.9 (herring) and 5.0 (capelin) times higher than that estimated when adopting food chain theory. SPPR resulting from our new approach is only valid for the given time period for which the food web is modeled and cannot be used to infer changes in SPPR when the food web is altered by changes in human exploitation or environmental changes.
MeSH term(s)	Animals ; Aquatic Organisms ; Biomass ; Ecosystem ; Environment ; Fishes/physiology ; Food Chain ; Humans ; Iceland ; Marine Biology/methods ; Models, Biological ; Models, Theoretical ; Oceans and Seas ; Whales/physiology
Language	English
Publishing date	2015-10-06
Publishing country	United States
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ISSN	1520-5851
ISSN (online)	1520-5851
DOI	10.1021/acs.est.5b02515
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article: Re-evaluating Primary Biotic Resource Use for Marine Biomass Production: A New Calculation Framework

Luong, Anh D / De Laender Frederik / Dewulf Jo / Schaubroeck Thomas

Environmental Science & Technology. 2015 Oct. 06, v. 49, no. 19

2015

Abstract	The environmental impacts of biomass harvesting can be quantified through the amount of net primary production required to produce one unit of harvested biomass (SPPR-specific primary production required). This paper presents a new calculation framework that explicitly takes into account full food web complexity and shows that the resulting SPPR for toothed whales in the Icelandic marine ecosystem is 2.8 times higher than the existing approach based on food web simplification. In addition, we show that our new framework can be coupled to food web modeling to examine how uncertainty on ecological data and processes can be accounted for while estimating SPPR. This approach reveals that an increase in the degree of heterotrophy by flagellates from 0% to 100% results in a two-fold increase in SPPR estimates in the Barents Sea. It also shows that the estimated SPPR is between 3.9 (herring) and 5.0 (capelin) times higher than that estimated when adopting food chain theory. SPPR resulting from our new approach is only valid for the given time period for which the food web is modeled and cannot be used to infer changes in SPPR when the food web is altered by changes in human exploitation or environmental changes.
Keywords	biomass production ; environmental impact ; food chain ; harvesting ; herring ; humans ; Mallotus villosus ; marine ecosystems ; models ; primary productivity ; uncertainty ; whales ; Barents Sea
Language	English
Dates of publication	2015-1006
Size	p. 11586-11593.
Publishing place	American Chemical Society
Document type	Article
ISSN	1520-5851
DOI	10.1021%2Facs.est.5b02515
Database	NAL-Catalogue (AGRICOLA)

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Article ; Online: Inferring time-variable effects of nutrient enrichment on marine ecosystems using inverse modelling and ecological network analysis.

Luong, Anh D / De Laender, Frederik / Olsen, Yngvar / Vadstein, Olav / Dewulf, Jo / Janssen, Colin R

The Science of the total environment

2014 Volume 493, Page(s) 708–718

Abstract: We combined data from an outdoor mesocosm experiment with carbon budget modelling and an ecological network analysis to assess the effects of continuous nutrient additions on the structural and functional dynamics of a marine planktonic ecosystem. The ... ...

Abstract	We combined data from an outdoor mesocosm experiment with carbon budget modelling and an ecological network analysis to assess the effects of continuous nutrient additions on the structural and functional dynamics of a marine planktonic ecosystem. The food web receiving no nutrient additions was fuelled by detritus, as zooplankton consumed 7.2 times more detritus than they consumed algae. Nutrient supply instantly promoted herbivory so that it was comparable to detritivory at the highest nutrient addition rate. Nutrient-induced food web restructuring reduced carbon cycling and decreased the average number of compartments a unit flow of carbon crosses before dissipation. Also, the efficiency of copepod production, the link to higher trophic levels harvestable by man, was lowered up to 35 times by nutrient addition, but showed signs of recovery after 9 to 11 days. The dependency of the food web on exogenous input was not changed by the nutrient additions.
MeSH term(s)	Animals ; Biomass ; Copepoda ; Ecology ; Ecosystem ; Environmental Monitoring/methods ; Models, Theoretical ; Nitrogen/analysis ; Phosphorus/analysis ; Plankton/classification ; Plankton/growth & development ; Plants ; Seawater/chemistry
Chemical Substances	Phosphorus (27YLU75U4W) ; Nitrogen (N762921K75)
Language	English
Publishing date	2014-09-15
Publishing country	Netherlands
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	121506-1
ISSN	1879-1026 ; 0048-9697
ISSN (online)	1879-1026
ISSN	0048-9697
DOI	10.1016/j.scitotenv.2014.06.027
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Article: Inferring time-variable effects of nutrient enrichment on marine ecosystems using inverse modelling and ecological network analysis

Luong, Anh D / Frederik De Laender / Yngvar Olsen / Olav Vadstein / Jo Dewulf / Colin R. Janssen

Science of the total environment. 2014 Sept. 15, v. 493

2014

Abstract	We combined data from an outdoor mesocosm experiment with carbon budget modelling and an ecological network analysis to assess the effects of continuous nutrient additions on the structural and functional dynamics of a marine planktonic ecosystem. The food web receiving no nutrient additions was fuelled by detritus, as zooplankton consumed 7.2 times more detritus than they consumed algae. Nutrient supply instantly promoted herbivory so that it was comparable to detritivory at the highest nutrient addition rate. Nutrient-induced food web restructuring reduced carbon cycling and decreased the average number of compartments a unit flow of carbon crosses before dissipation. Also, the efficiency of copepod production, the link to higher trophic levels harvestable by man, was lowered up to 35 times by nutrient addition, but showed signs of recovery after 9 to 11days. The dependency of the food web on exogenous input was not changed by the nutrient additions.
Keywords	Copepoda ; algae ; carbon ; carbon cycle ; detritivores ; herbivores ; marine ecosystems ; models ; trophic levels ; zooplankton
Language	English
Dates of publication	2014-0915
Size	p. 708-718.
Publishing place	Elsevier B.V.
Document type	Article
ZDB-ID	121506-1
ISSN	1879-1026 ; 0048-9697
ISSN (online)	1879-1026
ISSN	0048-9697
DOI	10.1016/j.scitotenv.2014.06.027
Database	NAL-Catalogue (AGRICOLA)

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Article: Inferring time-variable effects of nutrient enrichment on marine ecosystems using inverse modelling and ecological network analysis

Luong, Anh D. / Frederik De LaenderauthorResearch Unit in Environmental and Evolutionary Biology, Universit de Namur, Rue de Bruxelles, 61, Namur, Belgium / Yngvar OlsenauthorDepartment of Biology, Norwegian University of Science and Technology, 7491 Trondheim, Norway / Olav VadsteinauthorDepartment of Biotechnology, Norwegian University of Science and Technology, 7491 Trondheim, Norway / Jo DewulfauthorDepartment of Sustainable Organic Chemistry and Technology, Research Group EnVOC, Ghent University, Coupure Links 653, B-9000 Ghent, Belgium / Colin R. JanssenauthorLaboratory of Environmental Toxicity and Aquatic Ecology, Ghent University, J. Plateaustraat 22, 9000 Ghent, Belgium

Language	English
Document type	Article
Database	AGRIS - International Information System for the Agricultural Sciences and Technology

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