subject:(nutrient flows)

University of California – Berkeley

1. Swift, Jillian Amy. Polynesian Subsistence, Nutrient Flows, and Long-Term Socio-Ecosystem Dynamics: Insights from Stable Isotope Analysis of the Pacific Rat (Rattus exulans) in Island Foodwebs.

Degree: Anthropology, 2016, University of California – Berkeley

URL: http://www.escholarship.org/uc/item/9wd8764f

► This dissertation applies stable carbon (δ13C) and nitrogen (δ15N) isotope analysis to archaeological specimens of the human-transported Pacific rat (Rattus exulans) to investigate prehistoric patterns… (more)

▼ This dissertation applies stable carbon (δ13C) and nitrogen (δ15N) isotope analysis to archaeological specimens of the human-transported Pacific rat (Rattus exulans) to investigate prehistoric patterns of subsistence, site use, and long-term socio-ecosystem dynamics on Polynesian Islands. The Pacific rat is a small commensal species characterized by low dietary selectivity and a limited home range. Its close association with past Polynesian peoples—and ubiquity in Polynesian archaeological sites—suggests that dietary change in this species can provide insight into changing island landscapes and human subsistence regimes. Pacific rat bone collagen δ13C and δ15N values were compared across three contrastive island socio-ecosystems: Mangareva, the Marquesas, and Tikopia. Spatiotemporal trends in Pacific rat stable isotope ratios are related to localized changes in human activity and subsistence practices, as well as global ecosystem processes which include avifaunal extinctions, resource depression, and soil nutrient cycling. On Mangareva, temporal variations in δ13C and δ15N values were assessed from three sites: the Onemea site, Taravai Island (TAR-6), Nenega-iti Rockshelter, Agakauitai Island (AGA-3), and Kitchen Cave Rockshelter, Kamaka Island (KAM-1). Declining δ15N values through time at all three Mangarevan sites reflect archipelago-wide socio-ecosystem changes related to site activity and avifaunal population declines. At the Hane dune site, Ua Huka Island (Marquesas), shifts in rat diet provide insight into changing Marquesan settlement and subsistence practices. On the Polynesian Outlier of Tikopia, a 650-year period of stability in rat bone collagen δ13C and δ15N values during the Kiki Phase (800-160 BC) suggests that mechanisms for long-term socio-ecosystem sustainability have been in place on the island for over 2000 years. These results demonstrate the capacity for stable isotope analysis of the Pacific rat to provide a new, low-impact line of evidence towards reconstructing localized patterns of site use, subsistence practices, and island ecology.

Subjects/Keywords: Archaeology; Human ecodynamics; Nutrient flows; Pacific rat; Polynesia; Resource depression; Stable isotopes

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Swift, J. A. (2016). Polynesian Subsistence, Nutrient Flows, and Long-Term Socio-Ecosystem Dynamics: Insights from Stable Isotope Analysis of the Pacific Rat (Rattus exulans) in Island Foodwebs. (Thesis). University of California – Berkeley. Retrieved from http://www.escholarship.org/uc/item/9wd8764f

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Swift, Jillian Amy. “Polynesian Subsistence, Nutrient Flows, and Long-Term Socio-Ecosystem Dynamics: Insights from Stable Isotope Analysis of the Pacific Rat (Rattus exulans) in Island Foodwebs.” 2016. Thesis, University of California – Berkeley. Accessed April 11, 2021. http://www.escholarship.org/uc/item/9wd8764f.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Swift, Jillian Amy. “Polynesian Subsistence, Nutrient Flows, and Long-Term Socio-Ecosystem Dynamics: Insights from Stable Isotope Analysis of the Pacific Rat (Rattus exulans) in Island Foodwebs.” 2016. Web. 11 Apr 2021.

Vancouver:

Swift JA. Polynesian Subsistence, Nutrient Flows, and Long-Term Socio-Ecosystem Dynamics: Insights from Stable Isotope Analysis of the Pacific Rat (Rattus exulans) in Island Foodwebs. [Internet] [Thesis]. University of California – Berkeley; 2016. [cited 2021 Apr 11]. Available from: http://www.escholarship.org/uc/item/9wd8764f.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Swift JA. Polynesian Subsistence, Nutrient Flows, and Long-Term Socio-Ecosystem Dynamics: Insights from Stable Isotope Analysis of the Pacific Rat (Rattus exulans) in Island Foodwebs. [Thesis]. University of California – Berkeley; 2016. Available from: http://www.escholarship.org/uc/item/9wd8764f

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

2. Fernandez mena, Hugo. Modélisation des flux de biomasse et de nutriments dans les territoires agricoles : simulation et évaluation de scénarios appliqués à un cas d’étude en France : Modelling biomass and nutrient flows in agro-food systems at the local scale : scenario simulation and assessment in a French case-study.

Degree: Docteur es, Biogéochimie et écosystèmes, 2017, Bordeaux

URL: http://www.theses.fr/2017BORD0960

►

Nourrir une population mondiale croissante dans un contexte de changements globaux pose de nouveaux défis à l’agriculture en termes d’efficience de production et d’impacts environnementaux.… (more)

▼

Nourrir une population mondiale croissante dans un contexte de changements globaux pose de nouveaux défis à l’agriculture en termes d’efficience de production et d’impacts environnementaux. Rendre les systèmes agro-alimentaires plus soutenables nécessite de mieux recycler la biomasse et les nutriments, c’est-à-dire de tendre vers des flux de fertilisants, de produits végétaux, d’aliments du bétail, de coproduits et de déchets plus circulaires. À ce titre, il est nécessaire de développer de nouveaux outils pour mieux explorer et évaluer les échanges de matières entre les fermes et leurs partenaires économiques amont et aval dans les territoires. Dans le travail présent, l’état de l’art concernant les méthodes d’analyse, de modélisation et d’évaluation environnementale des flux de biomasse et d’éléments minéraux à différentes échelles est réalisé. Le modèle multi-agents FAN (« Flows in Agricultural Network») qui simule les flux des matières entre les fermes et leurs partenaires économiques dans les territoires agricoles a été développé. Les processus de FAN sont expliqués en détail et une analyse de sensibilité des variables clefs est présentée. Par ailleurs, le modèle FAN a été appliqué à un cas d’études en France pour évaluer la performance des scénarios contrastés visant à améliorer l’efficience d’utilisation des éléments minéraux, développer le recyclage de la matière, favoriser la production du biogaz ou reconcevoir les systèmes de production. Les sorties de simulations des scénarios sont analysées en termes de production alimentaire et énergétique, de flux de matières et de logistique, de cycle des nutriments et d’émissions de gaz à effet de serre. Ce travail montre l’utilité des outils de prospective et modèles multi-agents pour améliorer la durabilité des systèmes agricoles et des chaines alimentaires, pour créer et évaluer des solutions collectives tendant vers l’économie circulaire et pour prendre en charge les interactions entre acteurs économiques au sein des chaines et filières alimentaires complexes.

Feeding the growing global population in a context of global change raises new challenges for agriculture regarding its production efficiency and impacts on natural resources. Solutions for towards farming sustainability require to improve nutrient and biomass recycling in agro-food systems, i.e. to move from linear to more circular flows of fertilizers, crop products, feedstuff, by-products and organic wastes. Innovative tools exploring material exchanges between farms and their upstream and downstream partners in agro-food systems at the local scale are needed. In the present work, the state of the art about analysis methods, models and environmental tools addressing nutrient and biomass flows at different scales is reviewed. The FAN (“Flows in Agricultural Network”) model, an agent-based model that simulates a range of material flows among farms and their partners within agricultural districts is developed. FAN processes are explained in details and a sensitivity analysis to some key variables is…

Advisors/Committee Members: Pellerin, Sylvain (thesis director), Nesme, Thomas (thesis director).

Subjects/Keywords: Flux de nutriments; Systèmes agro-alimentaires; Azote; Modèle multi-agents; Flux circulaires; Écologie agro-industrielle; Échelle du territoire; Recyclage des produits organiques; Nutrient flows; Agro-food systems; Nitrogen; Agent-based model; Circular flows; Agro-industrial ecology; Local scale; Organic waste recycling

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Fernandez mena, H. (2017). Modélisation des flux de biomasse et de nutriments dans les territoires agricoles : simulation et évaluation de scénarios appliqués à un cas d’étude en France : Modelling biomass and nutrient flows in agro-food systems at the local scale : scenario simulation and assessment in a French case-study. (Doctoral Dissertation). Bordeaux. Retrieved from http://www.theses.fr/2017BORD0960

Chicago Manual of Style (16^th Edition):

Fernandez mena, Hugo. “Modélisation des flux de biomasse et de nutriments dans les territoires agricoles : simulation et évaluation de scénarios appliqués à un cas d’étude en France : Modelling biomass and nutrient flows in agro-food systems at the local scale : scenario simulation and assessment in a French case-study.” 2017. Doctoral Dissertation, Bordeaux. Accessed April 11, 2021. http://www.theses.fr/2017BORD0960.

MLA Handbook (7^th Edition):

Fernandez mena, Hugo. “Modélisation des flux de biomasse et de nutriments dans les territoires agricoles : simulation et évaluation de scénarios appliqués à un cas d’étude en France : Modelling biomass and nutrient flows in agro-food systems at the local scale : scenario simulation and assessment in a French case-study.” 2017. Web. 11 Apr 2021.

Vancouver:

Fernandez mena H. Modélisation des flux de biomasse et de nutriments dans les territoires agricoles : simulation et évaluation de scénarios appliqués à un cas d’étude en France : Modelling biomass and nutrient flows in agro-food systems at the local scale : scenario simulation and assessment in a French case-study. [Internet] [Doctoral dissertation]. Bordeaux; 2017. [cited 2021 Apr 11]. Available from: http://www.theses.fr/2017BORD0960.

Council of Science Editors:

Fernandez mena H. Modélisation des flux de biomasse et de nutriments dans les territoires agricoles : simulation et évaluation de scénarios appliqués à un cas d’étude en France : Modelling biomass and nutrient flows in agro-food systems at the local scale : scenario simulation and assessment in a French case-study. [Doctoral Dissertation]. Bordeaux; 2017. Available from: http://www.theses.fr/2017BORD0960

KTH

3. Rizk, Samuel. Desertopia.

Degree: Architecture, 2015, KTH

URL: http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-122855

►

Today over 80 million Egyptians and the majority of the country’s agricultural land are squeezed into an area the size of Stockholm county. This… (more)

Subjects/Keywords: architecture; urban design; Egypt; desert; desertification; sustainable; rurban; planning; region; ecosystem; nutrient flows; food; water; desalination; seawater greenhouse; train; farming; community; neighborhood; empowerment; network; city; town; village; development; climate change; poverty

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Rizk, S. (2015). Desertopia. (Thesis). KTH. Retrieved from http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-122855

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Rizk, Samuel. “Desertopia.” 2015. Thesis, KTH. Accessed April 11, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-122855.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Rizk, Samuel. “Desertopia.” 2015. Web. 11 Apr 2021.

Vancouver:

Rizk S. Desertopia. [Internet] [Thesis]. KTH; 2015. [cited 2021 Apr 11]. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-122855.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Rizk S. Desertopia. [Thesis]. KTH; 2015. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-122855

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

4. Klein, de, J.J.M. From ditch to delta : nutrient retention in running waters.

Degree: 2008, NARCIS

URL: http://library.wur.nl/WebQuery/wurpubs/366668 ; urn:nbn:nl:ui:32-366668 ; urn:nbn:nl:ui:32-366668 ; http://library.wur.nl/WebQuery/wurpubs/366668

► Beken en rivieren transporteren nutriënten (vooral stikstof en fosfor), afkomstig van puntbronnen en diffuse lozingen, naar benedenstrooms gelegen meren en kustwateren. Dit leidt tot eutrofieringsverschijnselen… (more)

Subjects/Keywords: waterverontreiniging; voedingsstoffentransport; waterlopen; rivieren; nederland; nitraten; fosfaten; nutriëntenstromen; aquatische ecologie; oppervlaktewaterkwaliteit; Waterkwaliteit; water pollution; nutrient transport; streams; rivers; netherlands; nitrates; phosphates; nutrient flows; aquatic ecology; surface water quality; Water Quality

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Klein, de, J. J. M. (2008). From ditch to delta : nutrient retention in running waters. (Doctoral Dissertation). NARCIS. Retrieved from http://library.wur.nl/WebQuery/wurpubs/366668 ; urn:nbn:nl:ui:32-366668 ; urn:nbn:nl:ui:32-366668 ; http://library.wur.nl/WebQuery/wurpubs/366668

Chicago Manual of Style (16^th Edition):

Klein, de, J J M. “From ditch to delta : nutrient retention in running waters.” 2008. Doctoral Dissertation, NARCIS. Accessed April 11, 2021. http://library.wur.nl/WebQuery/wurpubs/366668 ; urn:nbn:nl:ui:32-366668 ; urn:nbn:nl:ui:32-366668 ; http://library.wur.nl/WebQuery/wurpubs/366668.

MLA Handbook (7^th Edition):

Klein, de, J J M. “From ditch to delta : nutrient retention in running waters.” 2008. Web. 11 Apr 2021.

Vancouver:

Klein, de JJM. From ditch to delta : nutrient retention in running waters. [Internet] [Doctoral dissertation]. NARCIS; 2008. [cited 2021 Apr 11]. Available from: http://library.wur.nl/WebQuery/wurpubs/366668 ; urn:nbn:nl:ui:32-366668 ; urn:nbn:nl:ui:32-366668 ; http://library.wur.nl/WebQuery/wurpubs/366668.

Council of Science Editors:

Klein, de JJM. From ditch to delta : nutrient retention in running waters. [Doctoral Dissertation]. NARCIS; 2008. Available from: http://library.wur.nl/WebQuery/wurpubs/366668 ; urn:nbn:nl:ui:32-366668 ; urn:nbn:nl:ui:32-366668 ; http://library.wur.nl/WebQuery/wurpubs/366668

5. Janssen, Annette B.G. A blooming business : Identifying limits to Lake Taihu's nutrient input.

Degree: 2017, Wageningen University

URL: http://library.wur.nl/WebQuery/wurpubs/523105 ; urn:nbn:nl:ui:32-523105 ; 10.18174/413490 ; urn:nbn:nl:ui:32-523105 ; http://library.wur.nl/WebQuery/wurpubs/523105

► Last century, Lake Taihu (China) became serious eutrophic due to excessive nutrient input. During the 1980s, the first algal blooms emerged in the lake,… (more)

▼ Last century, Lake Taihu (China) became serious eutrophic due to excessive nutrient input. During the 1980s, the first algal blooms emerged in the lake, reaching disastrous proportions in 2007. During that year, the intake of drinking water had to be shut down and millions of people had to look for an alternative source of drinking water. This raises the question whether such problems can be avoided. Of crucial importance in avoiding and reducing toxic algal blooms is the identification of the maximum nutrient load ecosystems can absorb, while remaining in a good ecological state. In this thesis, I aim to determine the critical nutrient load for Lake Taihu. I approach the search for critical nutrient loads of Lake Taihu in five steps with diversity as an overarching topic throughout this thesis: diversity in lakes, diversity in models, diversity in spatial distribution of nutrient and water sources, diversity in the development of lakes around the earth and finally diversity within specific lakes. From the long list of available models I chose the model PCLake to use in my analysis because it is the most extensively used food web model applied for bifurcation analysis of shallow aquatic ecosystems. The approach has resulted in a range of critical nutrient loads for different parts of Lake Taihu. Furthermore, critical nutrient loads depend on management goals, i.e. the maximum allowable chlorophyll-a concentration. According to the model results, total nutrient loads need to be more than halved to reach chlorophyll-a concentrations of 30-40 μg.L-1 in most sections of the lake. To prevent phytoplankton blooms with 20 μg.L-1 chlorophyll-a throughout Lake Taihu, both phosphorus and nitrogen loads need a nearly 90% reduction. This range contrasts to the single point of recovery that is often found for small shallow lakes. The range in critical nutrient loads found for Lake Taihu can be interpreted as providing a path of recovery for which each step leads to water quality improvement in certain parts of the lake. To reach total recovery, nutrient reduction seems to be the most promising management option. Advisors/Committee Members: Wageningen University, Wolf Mooij, J.H. Janse, A.A. van Dam.

Subjects/Keywords: meren; zoetwaterecologie; aquatische ecosystemen; voedingsstoffen; kringlopen; nutriëntenstromen; biodiversiteit; algen; modellen; critical loads; limnologie; ruimtelijke variatie; ecologisch herstel; china; Aquatische ecologie; lakes; freshwater ecology; aquatic ecosystems; nutrients; cycling; nutrient flows; biodiversity; algae; models; critical loads; limnology; spatial variation; ecological restoration; china; Aquatic Ecology

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Janssen, A. B. G. (2017). A blooming business : Identifying limits to Lake Taihu's nutrient input. (Doctoral Dissertation). Wageningen University. Retrieved from http://library.wur.nl/WebQuery/wurpubs/523105 ; urn:nbn:nl:ui:32-523105 ; 10.18174/413490 ; urn:nbn:nl:ui:32-523105 ; http://library.wur.nl/WebQuery/wurpubs/523105

Chicago Manual of Style (16^th Edition):

Janssen, Annette B G. “A blooming business : Identifying limits to Lake Taihu's nutrient input.” 2017. Doctoral Dissertation, Wageningen University. Accessed April 11, 2021. http://library.wur.nl/WebQuery/wurpubs/523105 ; urn:nbn:nl:ui:32-523105 ; 10.18174/413490 ; urn:nbn:nl:ui:32-523105 ; http://library.wur.nl/WebQuery/wurpubs/523105.

MLA Handbook (7^th Edition):

Janssen, Annette B G. “A blooming business : Identifying limits to Lake Taihu's nutrient input.” 2017. Web. 11 Apr 2021.

Vancouver:

Janssen ABG. A blooming business : Identifying limits to Lake Taihu's nutrient input. [Internet] [Doctoral dissertation]. Wageningen University; 2017. [cited 2021 Apr 11]. Available from: http://library.wur.nl/WebQuery/wurpubs/523105 ; urn:nbn:nl:ui:32-523105 ; 10.18174/413490 ; urn:nbn:nl:ui:32-523105 ; http://library.wur.nl/WebQuery/wurpubs/523105.

Council of Science Editors:

Janssen ABG. A blooming business : Identifying limits to Lake Taihu's nutrient input. [Doctoral Dissertation]. Wageningen University; 2017. Available from: http://library.wur.nl/WebQuery/wurpubs/523105 ; urn:nbn:nl:ui:32-523105 ; 10.18174/413490 ; urn:nbn:nl:ui:32-523105 ; http://library.wur.nl/WebQuery/wurpubs/523105

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