Jove
Visualize
Contáctanos
JoVE
x logofacebook logolinkedin logoyoutube logo
ACERCA DE JoVE
Visión GeneralLiderazgoBlogCentro de Ayuda JoVE
AUTORES
Proceso de PublicaciónConsejo EditorialAlcance y PolíticasRevisión por ParesPreguntas FrecuentesEnviar
BIBLIOTECARIOS
TestimoniosSuscripcionesAccesoRecursosConsejo Asesor de BibliotecasPreguntas Frecuentes
INVESTIGACIÓN
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchivo
EDUCACIÓN
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualCentro de Recursos para ProfesoresSitio de Profesores
Términos y Condiciones de Uso
Política de Privacidad
Políticas

Videos de Conceptos Relacionados

Primary Production01:06

Primary Production

25.8K
The total amount of energy acquired by primary producers in an ecosystem is called gross primary production (GPP). However, of this energy, producers use some for metabolic processes, and some is lost as heat, decreasing the amount of energy available to the next trophic level. The remaining usable amount of energy is called the net primary productivity (NPP). In terrestrial ecosystems, NPP is driven by climate, while light penetration and nutrient availability drive NPP in aquatic ecosystems.
25.8K
Production Efficiency01:01

Production Efficiency

18.9K
Net production efficiency (NPE) is the efficiency at which organisms assimilate energy into biomass for the next trophic level. Due to low metabolic rates and less energy spent on thermoregulatory processes, the NPE of ectotherms (cold-blooded animals) is 10 times higher than endotherms (warm-blooded animals).
18.9K
Inorganic Nitrogen Assimilation01:22

Inorganic Nitrogen Assimilation

680
Nitrogen is an essential element in biological systems, forming a crucial component of proteins, nucleic acids, and other cellular constituents. Many bacteria and archaea acquire nitrogen in the form of nitrate (NO₃⁻) or ammonia (NH₃), which are then assimilated into biomolecules through specific enzymatic pathways.Assimilatory Nitrate ReductionWhen nitrate enters the cell, it undergoes a two-step reduction process known as assimilatory nitrate reduction. Initially, the enzyme...
680
Metabolism of Chemolithotrophs01:15

Metabolism of Chemolithotrophs

1.0K
Chemolithotrophs are microorganisms that obtain energy by oxidizing inorganic molecules such as hydrogen gas (H₂), ammonia (NH₃), reduced sulfur compounds (H₂S, S²⁻), and ferrous iron (Fe²⁺). Unlike heterotrophic organisms that rely on organic carbon, chemolithotrophs transfer electrons from these inorganic donors to the electron transport chain (ETC), generating a proton motive force (PMF) that drives ATP synthesis through oxidative phosphorylation.
1.0K
The Nitrogen Cycle01:49

The Nitrogen Cycle

61.0K
Nitrogen atoms, present in all proteins and DNA, are recycled between abiotic and biotic components of the ecosystem. However, the primary form of nitrogen on Earth is nitrogen gas, which cannot be used by most animals and plants. Thus, nitrogen gas must first be converted into a usable form by nitrogen-fixing bacteria before it can be cycled through other living organisms. The use of nitrogen-containing fertilizers and animal waste products in human agriculture has greatly influenced the...
61.0K
Overview of Nitrogen Metabolism01:20

Overview of Nitrogen Metabolism

11.9K
Nitrogen is a very important element for life because it is a major constituent of proteins and nucleic acids. It is a macronutrient, and in nature, it is recycled from organic compounds and stored in the form of  ammonia, ammonium ions, nitrate, nitrite, or  nitrogen gas by many metabolic processes. Many of these metabolic processes are carried out only by prokaryotes.
The largest pool of nitrogen available in the terrestrial ecosystem is gaseous nitrogen (N2) from the air, but this...
11.9K

También podría leer

Artículos Relacionados

Artículos vinculados a este trabajo por autores compartidos, revista y gráfico de citas.

Ordenar por
Same author

Effects of mango-maize and mango-cassava agroforestry systems on arbuscular mycorrhizal fungi communities and soil properties in Southern Ethiopia.

Mycorrhiza·2026
Same author

Refining Niche Metric Calculations: A Modified Weighting Approach to Colwell and Futuyma's Method.

Bulletin of mathematical biology·2026
Same author

Tree community resource economics control soil food web multifunctionality.

Nature·2026
Same author

Relationships between canopy surface temperature measured from drones and below-canopy forest microclimate in a tree diversity experiment.

International journal of biometeorology·2026
Same author

Planting food forests can increase soil biodiversity in agricultural landscapes of Northwest Europe.

npj biodiversity·2026
Same author

Contrasting thermophilization among forests, grasslands and alpine summits.

Nature·2026

Video Experimental Relacionado

Updated: Mar 3, 2026

Author Spotlight: Understanding Riverine Nitrogen Impacts and Primary Productivity for Effective Nutrient Management
05:04

Author Spotlight: Understanding Riverine Nitrogen Impacts and Primary Productivity for Effective Nutrient Management

Published on: July 14, 2023

815

Saturación de nitrógeno y producción neta del ecosistema.

An De Schrijver1, Kris Verheyen, Jan Mertens

  • 1Laboratory of Forestry, Ghent University, Geraardsbergse Steenweg 267, 9090 Gontrode, Belgium. An.Deschrijver@Ugent.be

Nature
|February 15, 2008
PubMed
Resumen

Los bosques secuestran carbono debido a la deposición de nitrógeno, sin que se observen signos de saturación de nitrógeno. Sin embargo, la producción neta del ecosistema no es un indicador confiable de la saturación de nitrógeno.

Área de la Ciencia:

  • Ecología Forestal Ecología Forestal
  • Biogeoquímica La biogeoquímica es la bioquímica.
  • Ciencias ambientales Ciencias ambientales.

Más Videos Relacionados

A Low-Cost Method of Measuring the In Situ Primary Productivity of Periphyton Communities of Lentic Waters
06:02

A Low-Cost Method of Measuring the In Situ Primary Productivity of Periphyton Communities of Lentic Waters

Published on: December 16, 2022

2.4K
The Benthic Exchange of O2, N2 and Dissolved Nutrients Using Small Core Incubations
10:11

The Benthic Exchange of O2, N2 and Dissolved Nutrients Using Small Core Incubations

Published on: August 3, 2016

10.5K

Videos de Experimentos Relacionados

Last Updated: Mar 3, 2026

Author Spotlight: Understanding Riverine Nitrogen Impacts and Primary Productivity for Effective Nutrient Management
05:04

Author Spotlight: Understanding Riverine Nitrogen Impacts and Primary Productivity for Effective Nutrient Management

Published on: July 14, 2023

815
A Low-Cost Method of Measuring the In Situ Primary Productivity of Periphyton Communities of Lentic Waters
06:02

A Low-Cost Method of Measuring the In Situ Primary Productivity of Periphyton Communities of Lentic Waters

Published on: December 16, 2022

2.4K
The Benthic Exchange of O2, N2 and Dissolved Nutrients Using Small Core Incubations
10:11

The Benthic Exchange of O2, N2 and Dissolved Nutrients Using Small Core Incubations

Published on: August 3, 2016

10.5K

Sus antecedentes:

  • El secuestro neto de carbono en los bosques templados y boreales está significativamente influenciado por la deposición de nitrógeno.
  • Estudios anteriores sugirieron un riesgo potencial de saturación generalizada de nitrógeno en el ecosistema debido al aumento de las entradas de nitrógeno.