Subtidal macrozoobenthos communities from northern Chile during and post El Niño 1997–1998

@article{Moreno2007SubtidalMC,
  title={Subtidal macrozoobenthos communities from northern Chile during and post El Ni{\~n}o 1997–1998},
  author={R. Moreno and R. Sep{\'u}lveda and E. Badano and S. Thatje and N. Rozbaczylo and F. Carrasco},
  journal={Helgoland Marine Research},
  year={2007},
  volume={62},
  pages={45-55}
}
Despite a large amount of climatic and oceanographic information dealing with the recurring climate phenomenon El Niño (EN) and its well known impact on diversity of marine benthic communities, most published data are rather descriptive and consequently our understanding of the underlying mechanisms and processes that drive community structure during EN are still very scarce. In this study, we address two questions on the effects of EN on macrozoobenthic communities: (1) how does EN affect… Expand

Figures and Tables from this paper

El Niño-Southern Oscillation cyclical modulation of macrobenthic community structure in the Humboldt Current ecosystem
Understanding how natural communities confront diff erent types of natural and anthropogenic stressors has gained much more attention as global climate change imposes nearly unpredictable ecosystemExpand
Community succession and seasonal onset of colonization in sublittoral hard and soft bottoms off northern Chile
TLDR
Benthic communities from northern Chile present a high resistance capacity to small scale disturbance during cold conditions with hard bottoms responding slower compared to the relatively quick recovery detected in soft bottoms, which highlights the resistance of the benthic system toSmall scale disturbances. Expand
Population dynamics of the amphioxus Branchiostoma elongatum from northern Chile
TLDR
The population dynamics of B. elongatum from northern Chile was studied between February 2008 and January 2009, and the results were compared with other species within the genus Branchiostoma inhabiting distinct ecosystems. Expand
Organismal biology joins climate research: the example of ENSO
  • S. Thatje
  • Biology
  • Helgoland Marine Research
  • 2007
TLDR
The compilation of ongoing work clearly marks the complexity of the Humboldt Current ecosystem in response to both EN and LN, Special Issue: Climate variability and El Nino Southern Oscillation: implications for natural coastal resources and management. Expand
Succession and seasonal variation in the development of subtidal macrobenthic soft-bottom communities off northern Chile
Community succession is an important process in modulating the structure of benthic soft-bottom communities. A field experiment was conducted aiming (1) to describe the successional development in aExpand
Effects of La Niña on recruitment and abundance of juveniles and adults of benthic community-structuring species in northern Chile
TLDR
The results highlight the importance of evaluating the effects of ENSO at early ontogenetic stages rather than on adult populations, which are less likely to be affected in an upwelling-dominated system. Expand
Functional diversity of marine macrobenthic communities from sublittoral soft-sediment habitats off northern Chile
Benthic communities show changes in composition and structure across different environmental characteristics and habitats. However, incorporating species biological traits into the analysis canExpand
Seasonal variability of emerging invertebrate assemblages in a sheltered soft-bottom sublittoral habitat
TLDR
Clear seasonal effects were observed, with total abundance increasing during spring and a cyclical pattern in assemblage structure of the emerging benthos closely resembled the pattern observed in the pelagic fauna. Expand
Climate variability and El Niño Southern Oscillation: implications for natural coastal resources and management
The El Niño Southern Oscillation (ENSO) significantly influences marine ecosystems and the sustained exploitation of marine resources in the coastal zone of the Humboldt Current upwelling system.Expand
Functional changes in benthic macrofaunal communities along a natural gradient of hypoxia in an upwelling system.
TLDR
This study used a biological trait-based approach and estimated functional diversity indices to assess macrobenthic community functioning along a depth gradient associated with naturally increasing hypoxia and concentrations of organic matter in the upwelling zone of northern Chile over two years, highlighting the increasing dominance of opportunistic biological traits associated with Hypoxia. Expand
...
1
2
...

References

SHOWING 1-10 OF 89 REFERENCES
Positive effects of “El Niño” on macrozoobenthos inhabiting hypoxic areas of the Peruvian upwelling system
TLDR
Results are consistent with the hypothesis that the processes of post-catastrophic recovery of macrozoobenthos on marine soft bottoms are largely predictable, although certain particular mechanisms seem to exist for post-hypoxic recovery during El Niño in areas of the Peruvian coastal upwelling. Expand
Long Term Variability in the Structure of Kelp Communities in Northern Chile and the 1997–98 ENSO
This is the first study on the south eastern Pacific coast of South America which details long term, interannual variability in the structure of subtidal rocky-bottom kelp-dominated communitiesExpand
Sublittoral soft bottom communities and diversity of Mejillones Bay in northern Chile (Humboldt Current upwelling system)
TLDR
No typical change in community structure occurred during El Niño 1997–1998, in contrast to what was observed for deeper faunal assemblages and hypoxic bays elsewhere in the coastal Humboldt Current system. Expand
Impact of Two “El Niño” Events of Different Intensity on the Hypoxic Soft Bottom Macrobenthos off the Central Peruvian wast
. Monthly changes in the community structure of hypoxic soft-bottom macrobenthos have been studied at a station at 34 m depth in Ancon Bay (Peru) before and during two El Nino (EN) events. Of theseExpand
Biological and chemical consequences of the 1997-1998 El nino in the Chilean coastal upwelling system: a synthesis
Abstract The coastal upwelling ecosystem of the Humboldt Current System off Peru and Chile exhibits strong interannual variability due to changes in the oceanographic conditions related to the ElExpand
El Niño and similar perturbation effects on the benthos of the Humboldt, California, and Benguela Current upwelling ecosystems
Abstract. To a certain degree, Eastern Boundary Current (EBC) ecosystems are similar: Cold bottom water from moderate depths, rich in nutrients, is transported to the euphotic zone by a combinationExpand
Benthic processes on the Peru margin: a transect across the oxygen minimum zone during the 1997–98 El Niño
TLDR
The taxa most tolerant of nearly anoxic, organic-rich conditions within the Peru OMZ were calcareous foraminifera, nematodes and gutless phallodrilinid (symbiont-bearing) oligochaetes, and many other macrofaunal taxa increased in relative abundance below the OMZ. Expand
Benthos communities in oxygen deficient shelf and upper slope areas of the Peruvian and Chilean Pacific coast, and changes caused by El Niño
Abstract Besides a well oxygenated shallow water area characterized by an extremely rich benthic life, most of the Peruvian and Chilean continental shelf and upper slope lies within an oxygen minimumExpand
Ecological effects of El Niño in terrestrial ecosystems of western South America
TLDR
A simplified model of El Nino-driven bottom-up control in terrestrial ecosystems of western South America is offered, showing a weak feedback loop between the plant compartments (vegetation and seeds) and their herbivores and their predators: the latter seem to just “surf” over prey levels, skimming excess prey. Expand
TEMPORAL AND SPATIAL SCALES OF KELP DEMOGRAPHY: THE ROLE OF OCEANOGRAPHIC CLIMATE
TLDR
The strongest biological definition of realized niches occurred during the nutrient-rich La Nina period, especially in shallow depths, and one of the most important conclusions of this paper is the appreciation of the importance of scaling in time to include oceanographic climate. Expand
...
1
2
3
4
5
...