Concept

Resource (biology)

In biology and ecology, a resource is a substance or object in the environment required by an organism for normal growth, maintenance, and reproduction. Resources box can be consumed by one organism and, as a result, become unavailable to another organism. For plants key resources are light, nutrients, water, and place to grow. For animals key resources are food, water, and territory.

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https://en.wikipedia.org/wiki/Resource_(biology)

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Questions foncières liées à l'agriculture urbaine

Plonge dans les défis de la disponibilité des terres et de la concurrence dans l'agriculture urbaine dans les villes africaines.

Questions foncières liées à l'agriculture urbaine

Explore les défis de la disponibilité des terres et de la concurrence dans l'agriculture urbaine dans les villes africaines.

Publications associées (5)

Is competition for cellular resources a driver of complex trait heritability?

Abstract Most human complex traits are enormously polygenic, with thousands of contributing variants with small effects, spread across much of the genome. These observations raise questions about why so many variants–and so many genes–impact any given phenotype. Here we consider a possible model in which variant effects are due to competition among genes for pools of shared intracellular resources such as RNA polymerases. To this end, we describe a simple theoretical model of resource competition for polyme

eLife Sciences Publications, Ltd2024

A System Dynamics Assessment of the Supply of Superalloys using WORLD6; Sufficiency for Civilian and Military Aviation Needs

The extraction, supply, market price and recycling of the metals used for superalloys were modelled using the systems dynamics model WORLD6. Peak production per capita (Supply Security) and stock-in-use per capita (Utility of Use) as well as resource stock lifetime during self-supply (Resilience) are key indicators. The resource estimates made resulted in significantly larger estimates than previous studies for nickel, tantalum, niobium, wolfram, molybdenum, cobalt, rhenium, titanium, zirconium and hafnium.

Paul Scherrer Institute, World Resources Forum2019

ON THE ROAD TO A RESOURCE EFFICIENT EUROPE: RECENT FINDINGS FROM POLFREE RESEARCH

Concerning the use of natural resources in terms of raw materials, water, land and soil as well as with regards to CO2 emissions, the European Union (EU) aims at achieving ambitious targets (European Commission 2011). It is rather unambiguous that a socio-economic transition is needed in order to achieve these objectives, but to which extent? For an illumination of this topic, the POLFREE project arranged simulation studies by means of the global economy-energy-environment model GINFORS. GINFORS represents

A World Resources Forum Production, PSI2017

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Personnes associées (4)

Marc Vielle

Marc Vielle has obtained a PhD degree in economics from the University Panthéon-Sorbonne (Paris). He worked as an economic researcher at the Laboratoire ERASME of Ecole Centrale de Paris and Université de Paris I (1987-1992), where he developed and managed the macroeconomic model HERMES-France. In 1991 he joined the Commissariat à lEnergie Atomique (CEA) as senior economist where he participated to the development of two models (GEM-E3 and PRIMES) funded by the European Commission. In 1996 he joined the Institut dEconomie Industrielle of Toulouse directed by Jean-Jacques Laffont. In 2003 he joined the Laboratoire dEconomie des Ressources Naturelles directed by Michel Moreaux. Since 2007, Marc works at EPFL. He is member of the GEMINI-E3 team and participates to the development of the world general equilibrium model GEMINI-E3. Marc has a strong experience in economic modeling (especially CGE modeling), quantitative analysis, energy and climate change policies. He has contributed to several research projects funded by national governments, European Commission and private companies. Skype 'Skype Me!' buttonhttp://www.skype.com/go/skypebuttons

Sara Bonetti

Expertise Ecohydrological and geomorphological modeling Education PhD | Civil and Environmental Engineering 2018 – 2018 Duke University Teaching & PhD PhD Students Benjamin Andre De Blois Kargere, Qiming Sun, Frédéric Laurent Lardet, Taiqi Lian, Felix Bauer Courses Ecohydrological modeling ENV-411 This course provides the theoretical basis for understanding and modeling the interactions between the hydrologic cycle, vegetation, soil, climate, and human society. Hydrology

Andrea Rinaldo

Pierre Rémi Mariotte

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Source officielle

https://en.wikipedia.org/wiki/Resource_(biology)

À propos de ce résultat

Séances de cours associées (2)

Questions foncières liées à l'agriculture urbaine

Plonge dans les défis de la disponibilité des terres et de la concurrence dans l'agriculture urbaine dans les villes africaines.

Questions foncières liées à l'agriculture urbaine

Explore les défis de la disponibilité des terres et de la concurrence dans l'agriculture urbaine dans les villes africaines.

Publications associées (5)

Is competition for cellular resources a driver of complex trait heritability?

eLife Sciences Publications, Ltd2024

A System Dynamics Assessment of the Supply of Superalloys using WORLD6; Sufficiency for Civilian and Military Aviation Needs

Paul Scherrer Institute, World Resources Forum2019

ON THE ROAD TO A RESOURCE EFFICIENT EUROPE: RECENT FINDINGS FROM POLFREE RESEARCH

A World Resources Forum Production, PSI2017

Afficher plus

Personnes associées (4)

Concepts associés (8)

Community (ecology)

In ecology, a community is a group or association of populations of two or more different species occupying the same geographical area at the same time, also known as a biocoenosis, biotic community, biological community, ecological community, or life assemblage. The term community has a variety of uses. In its simplest form it refers to groups of organisms in a specific place or time, for example, "the fish community of Lake Ontario before industrialization".

Size-asymmetric competition

Size-asymmetric competition refers to situations in which larger individuals exploit disproportionately greater amounts of resources when competing with smaller individuals. This type of competition is common among plants but also exists among animals. Size-asymmetric competition usually results from large individuals monopolizing the resource by "pre-emption". i.e. exploiting the resource before smaller individuals are able to obtain it. Size-asymmetric competition has major effects on population structure and diversity within ecological communities.

Démécologie

thumb|350px|Groupes familiaux d'éléphants, au sein d'une population régionale thumb|350px|Un groupe de « populations » constitue une métapopulation. Les populations d'animaux, plantes, champignons, microbes... contribuent au fonctionnement des écosystèmes, qui eux-mêmes forment des biomes et la biosphère ou symbiosphère (expression de Joël de Rosnay est le niveau planétaire d'intégration de toutes les échelles du Vivant (du gène à la somme des biomes (sans laquelle l'oxygène et donc la couche d'ozone n'existeraient pas) ; Le gène est représenté à part, car non vivant en tant que tel, mais support d'information et base du vivant.

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