Nutrient and herbivore alterations cause uncoupled changes in producer diversity, biomass and ecosystem function, but not in overall multifunctionality
Altered nutrient cycles and consumer populations are among the top anthropogenic influences on ecosystems. However, studies on the simultaneous impacts of human-driven environmental alterations on ecosystem functions, and the overall change in system multifunctionality are scarce. We used estuarine...
Guardado en:
| Autores principales: | , , , , , , , , |
|---|---|
| Formato: | Articulo |
| Lenguaje: | Inglés |
| Publicado: |
2017
|
| Materias: | |
| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/87224 |
| Aporte de: |
| id |
I19-R120-10915-87224 |
|---|---|
| record_format |
dspace |
| institution |
Universidad Nacional de La Plata |
| institution_str |
I-19 |
| repository_str |
R-120 |
| collection |
SEDICI (UNLP) |
| language |
Inglés |
| topic |
Ciencias Naturales Sediment Nutrient Anthropogenic pressures Ecosystem |
| spellingShingle |
Ciencias Naturales Sediment Nutrient Anthropogenic pressures Ecosystem Alberti, J. Cebrian, J. Álvarez, Federico Escapa, M. Esquius, K. S. Fanjul, E. Sparks, E. L. Mortazavi, M. Iribarne, O. Nutrient and herbivore alterations cause uncoupled changes in producer diversity, biomass and ecosystem function, but not in overall multifunctionality |
| topic_facet |
Ciencias Naturales Sediment Nutrient Anthropogenic pressures Ecosystem |
| description |
Altered nutrient cycles and consumer populations are among the top anthropogenic influences on ecosystems. However, studies on the simultaneous impacts of human-driven environmental alterations on ecosystem functions, and the overall change in system multifunctionality are scarce. We used estuarine tidal flats to study the effects of changes in herbivore density and nutrient availability on benthic microalgae (diversity, abundance and biomass) and ecosystem functions (N2-fixation, denitrification, extracellular polymeric substances -EPS- as a proxy for sediment cohesiveness, sediment water content as a proxy of water retention capacity and sediment organic matter). We found consistent strong impacts of modified herbivory and weak effects of increased nutrient availability on the abundance, biomass and diversity of benthic microalgae. However, the effects on specific ecosystem functions were disparate. Some functions were independently affected by nutrient addition (N2-fixation), modified herbivory (sediment organic matter and water content), or their interaction (denitrification), while others were not affected (EPS). Overall system multifunction remained invariant despite changes in specific functions. This study reveals that anthropogenic pressures can induce decoupled effects between community structure and specific ecosystem functions. Our results highlight the need to address several ecosystem functions simultaneously for better ecosystem characterization and management. |
| format |
Articulo Articulo |
| author |
Alberti, J. Cebrian, J. Álvarez, Federico Escapa, M. Esquius, K. S. Fanjul, E. Sparks, E. L. Mortazavi, M. Iribarne, O. |
| author_facet |
Alberti, J. Cebrian, J. Álvarez, Federico Escapa, M. Esquius, K. S. Fanjul, E. Sparks, E. L. Mortazavi, M. Iribarne, O. |
| author_sort |
Alberti, J. |
| title |
Nutrient and herbivore alterations cause uncoupled changes in producer diversity, biomass and ecosystem function, but not in overall multifunctionality |
| title_short |
Nutrient and herbivore alterations cause uncoupled changes in producer diversity, biomass and ecosystem function, but not in overall multifunctionality |
| title_full |
Nutrient and herbivore alterations cause uncoupled changes in producer diversity, biomass and ecosystem function, but not in overall multifunctionality |
| title_fullStr |
Nutrient and herbivore alterations cause uncoupled changes in producer diversity, biomass and ecosystem function, but not in overall multifunctionality |
| title_full_unstemmed |
Nutrient and herbivore alterations cause uncoupled changes in producer diversity, biomass and ecosystem function, but not in overall multifunctionality |
| title_sort |
nutrient and herbivore alterations cause uncoupled changes in producer diversity, biomass and ecosystem function, but not in overall multifunctionality |
| publishDate |
2017 |
| url |
http://sedici.unlp.edu.ar/handle/10915/87224 |
| work_keys_str_mv |
AT albertij nutrientandherbivorealterationscauseuncoupledchangesinproducerdiversitybiomassandecosystemfunctionbutnotinoverallmultifunctionality AT cebrianj nutrientandherbivorealterationscauseuncoupledchangesinproducerdiversitybiomassandecosystemfunctionbutnotinoverallmultifunctionality AT alvarezfederico nutrientandherbivorealterationscauseuncoupledchangesinproducerdiversitybiomassandecosystemfunctionbutnotinoverallmultifunctionality AT escapam nutrientandherbivorealterationscauseuncoupledchangesinproducerdiversitybiomassandecosystemfunctionbutnotinoverallmultifunctionality AT esquiusks nutrientandherbivorealterationscauseuncoupledchangesinproducerdiversitybiomassandecosystemfunctionbutnotinoverallmultifunctionality AT fanjule nutrientandherbivorealterationscauseuncoupledchangesinproducerdiversitybiomassandecosystemfunctionbutnotinoverallmultifunctionality AT sparksel nutrientandherbivorealterationscauseuncoupledchangesinproducerdiversitybiomassandecosystemfunctionbutnotinoverallmultifunctionality AT mortazavim nutrientandherbivorealterationscauseuncoupledchangesinproducerdiversitybiomassandecosystemfunctionbutnotinoverallmultifunctionality AT iribarneo nutrientandherbivorealterationscauseuncoupledchangesinproducerdiversitybiomassandecosystemfunctionbutnotinoverallmultifunctionality |
| bdutipo_str |
Repositorios |
| _version_ |
1764820489761456130 |