The El Niño Southern Oscillation (ENSO) is the main source of variation for the gamma diversity of plankton communities in subtropical shallow lakes

Pineda, Alfonso; Peláez, Óscar; Dias, Juliana Déo; Segóvia, Bianca Trevizan; Bonecker, Cláudia Cósta; Velho, Luiz Felipe Machado; Rodrigues, Luzia Cleide

doi:10.1007/s00027-019-0646-z

Cited by 21 publications

(12 citation statements)

References 81 publications

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“…Pulsos de inundação têm sido apontados como um dos principais direcionadores das mudanças nos padrões sazonais do fitoplâncton (Bortolini et al 2014, 2016, Pineda et al 2019. No nosso estudo, a conexão entre lago e rio, embora controlada artificialmente por meio de diques, facilitou as trocas de organismos e nutrientes entre esses ambientes e os altos níveis de água do rio Illinois durante a primavera provavelmente influenciaram o aumento do biovolume e riqueza no lago.…”

Section: Discussionunclassified

Grupos Funcionais Fitoplanctônicos Evidenciam Diferenças Ambientais Em Uma Planície De Inundação Temperada

Zanon

Iatskiu²,

Lemke³

et al. 2021

Oecol. Aust.

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Floodplain environments have high biodiversity and provide many ecosystem services maintained by the flood pulses. The phytoplankton is essential to the functioning of these ecosystems, acting upon primary productivity and biogeochemical cycles. We evaluated phytoplankton in a river-lake flood system (Illinois River floodplain-USA) during a hydrological cycle and compared the taxonomic (species) and functional (morphologic-based functional groups – MBFG) approaches. As expected, greater species richness was registered in the river and higher biovolume in the lake, as well as the predominance of different MBFGs in each environment. Furthermore, seasonality drove richness and biovolume temporal variation due to the higher water levels during spring. The MBFG IV (i. e. without specialized traits), V (phytoflagellates) and VI (diatoms) were more important for richness and biovolume in both environments. We reinforce the fundamental role of the hydrodynamics characteristics, with higher phytoplankton biovolume values in the lake. Using MBFG resulted in a better explanation to the phytoplankton-environment relationship. Constant water column mixture and high turbidity selected species with traits (e.g. small size, presence of silica) specifically adapted to these conditions.

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Section: Discussionunclassified

Grupos Funcionais Fitoplanctônicos Evidenciam Diferenças Ambientais Em Uma Planície De Inundação Temperada

Zanon

Iatskiu²,

Lemke³

et al. 2021

Oecol. Aust.

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“…For instance, fl ood pulse phases can be related to a higher or a lower number of phytoplankton species in accordance with the hydrological period (Train & Rodrigues 1998, Bortolini et al 2014. Of course, biological communities react to more than one temporal climatic event, some acting on broad and others on fi ne temporal scales (Pineda et al 2019). The reduction of species in time was probably infl uenced by the operation of dams upstream which has reduced the frequency and intensity of fl ooding (Souza-Filho et al 2004, Leira & Cantonati 2008, and henceforward has decreased the eff ect of the fl ood pulse of the Paraná River as promoter of the connectivity and exchange of material and organisms among all the sites in the fl oodplains (Junk et al 1989, Simões et al 2012, Rodrigues et al 2015.…”

Section: Discussionmentioning

confidence: 99%

A Protection Area in a Subtropical Floodplain Influenced the Phytoplankton Taxonomic and Functional Diversity

et al. 2020

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Protection areas favor diversity as they decrease the impact of anthropic disturbance on biological communities. Testing its effects on diverse biological communities is a pivotal step to understand how different trophic levels react to such management and conservation strategies. Here, we used data collected from 1993 to 2018 from a subtropical floodplain to evaluate the effect of the installation of a protection zone on the taxonomic and functional diversity of the phytoplankton community. We showed that the installation of the park had a positive effect on the aquatic community, mainly related to the decrease of cyanobacteria dominance and to the increase of phytoplankton functional groups. However, our results also suggested that dynamics occurring in a scale beyond the park seemed to influence key factors for the phytoplankton community, such as transparency and nutrient concentrations. Thus, although we showed that a compensatory measure had a positive effect on biodiversity, we believe that the establishment of protection zones must also consider and integrate the management of the river basin where the areas to be protected are located.

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“…Likewise, severe flooding in El Niño years made the effects of dispersal stronger than the effects of environmental filtering, and dispersal was the main metacommunity structuring mechanism (Pineda et al, 2019). In marine benthic communities in Chile, El Niño events increased dispersal and mass effects, and also augmented differences in species composition among local communities because many environmental effects of El Niño were localized (Camus, 2008).…”

Section: Empirical Evidencementioning

confidence: 99%

“…ENSO and NAO events are important factors in global climate anomalies (Fraedrich and Müller, 1992;Diaz et al, 2001;Jeffries, 2005) that have the potential to act as environmental filters. In the one metacommunity study of environmental filtering, Pineda et al (2019) partitioned diversity of phytoplankton, ciliates and zooplankton in lakes in a subtropical river system and found varied effects for environmental filtering for different taxonomic groups. For phytoplankton and zooplankton, correlations of environmental variables with species richness and diversity indices were indicative of environmental filtering.…”

Section: Empirical Evidencementioning

confidence: 99%

Integrating Disturbance, Seasonality, Multi-Year Temporal Dynamics, and Dormancy Into the Dynamics and Conservation of Metacommunities

2020

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The metacommunity framework has rapidly become a dominant concept used by ecologists to understand community assembly. By emphasizing extinction-colonization dynamics, dispersal, and species' niche requirements in determining community structure, metacommunity theory unifies local and regional processes as integral to species distributions across landscapes. Metacommunity structure has traditionally been treated as static. However, habitat characteristics and community composition can shift through time because of factors like seasonal dynamics, ecosystem disturbance, multi-year climate variation (e.g., El Niño Southern Oscillation), and production and emergence of dormant propagules. In most systems, the relevance of such temporal variation for the structure and persistence of metacommunities is an open question that is of potential importance for conservation and management. We evaluate and synthesize the theory and concepts relevant to four major forms of temporal dynamics that are pertinent to metacommunities: disturbance, seasonality, multiyear climate variation, and dormancy. For each type of dynamic we review the theoretical underpinnings and empirical evidence to evaluate how the dynamic drives temporal variation in metacommunity structure. We also consider how major forms of anthropogenic change further influence these patterns. Our survey highlights that seasonal climatic differences can modify the distribution and availability of resources and connectivity, with consequences for species' use of the landscape and species interactions. Disturbance and multi-year climate cycles can increase the importance of dispersal, but implications for environmental filtering and species interactions remain unresolved. Dormant life stages serve to anchor habitat patches and species pools in space and highlight the importance of dispersal-dormancy tradeoffs and environmental variation for metacommunity structure. Temporal variability in biotic and abiotic conditions associated with these drivers can modify the relative strengths of dispersal, environmental filtering, and species interactions, three biological processes that drive metacommunity structure. Inclusion of spatiotemporal drivers creates patterns

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The El Niño Southern Oscillation (ENSO) is the main source of variation for the gamma diversity of plankton communities in subtropical shallow lakes

Cited by 21 publications

References 81 publications

Grupos Funcionais Fitoplanctônicos Evidenciam Diferenças Ambientais Em Uma Planície De Inundação Temperada

Grupos Funcionais Fitoplanctônicos Evidenciam Diferenças Ambientais Em Uma Planície De Inundação Temperada

A Protection Area in a Subtropical Floodplain Influenced the Phytoplankton Taxonomic and Functional Diversity

Integrating Disturbance, Seasonality, Multi-Year Temporal Dynamics, and Dormancy Into the Dynamics and Conservation of Metacommunities

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