Variable changes in zooplankton phenology associated with the disappearance of the spring phytoplankton bloom in Lake Michigan DOI
Steven A. Pot­hoven, Henry A. Vanderploeg

Freshwater Biology, Journal Year: 2021, Volume and Issue: 67(2), P. 365 - 377

Published: Nov. 29, 2021

Abstract Changes in seasonal cycles (i.e., phenology), can cause mismatches throughout aquatic food webs and often are used as the primary indicator of zooplankton response to environmental changes. However, phenology has been largely overlooked Lake Michigan despite altered phytoplankton, including disappearance offshore spring phytoplankton bloom following Dreissena mussel invasions. Multiple measures were evaluated for major groups southeastern both before loss (1983–2003), after had disappeared (2007–2019). Water temperatures did not differ between time periods. Standardised biomass declined periods all total cladoceran Daphnia summer. varied across depended on phenological used. Month peak shifted later groups, but central point growing season change any group The onset population development was delayed only copepod Limnocalanus . Spring chlorophyll concentrations combined with water provided best predictions , temperature relatively subtle compared large changes observed concentrations. By contrast, there fairly consistent declines that associated either alone or combination temperature. This may mean limitation a stronger influence production than Michigan. Based our results from Michigan, alterations such nutrient reduction invasive dreissenid filtering lead blooms other freshwater lakes could result delays some along biomass.

Language: Английский

Features that matter: studying how phytoplankton drives zooplankton community functional traits DOI
Wojciech Krztoń, Joanna Kosiba, Elżbieta Wilk‐Woźniak

et al.

Hydrobiologia, Journal Year: 2022, Volume and Issue: 849(12), P. 2647 - 2662

Published: May 20, 2022

Language: Английский

Citations

16
Swimming Behavior of Daphnia magna Is Altered by Pesticides of Concern, as Components of Agricultural Surface Water and in Acute Exposures DOI Creative Commons

Nicole Egan,

Sarah Stinson, Xin Deng

et al.

Biology, Journal Year: 2023, Volume and Issue: 12(3), P. 425 - 425

Published: March 10, 2023

Pesticides with novel modes of action including neonicotinoids and anthranilic diamides are increasingly detected in global surface waters. Little is known about how these pesticides concern interact mixtures at environmentally relevant concentrations, a common exposure scenario waterways impacted by pesticide pollution. We examined effects chlorantraniliprole (CHL) imidacloprid (IMI) on the sensitive invertebrate, Daphnia magna. Exposures were first performed using waters to be contaminated agricultural runoff. To evaluate seasonal variation chemical concentration composition waters, we tested water samples taken two time points: during an extended dry period after flush storm event. In concentrations CHL, IMI, other increased flush, resulting hypoactivity dose-dependent photomotor responses. then mortality behavior following single binary CHL IMI. inverse responses some evidence synergistic mixture exposures. Taken together, this research demonstrates that all cause abnormal swimming D. Invertebrate endpoint for measuring biological environmental concern.

Language: Английский

Citations

8
A review of functional approaches for the study of freshwater communities with a focus on zooplankton DOI
Christina Wyss Castelo Branco, Ewerton Fintelman-Oliveira, Viviane Bernardes dos Santos Miranda

et al.

Hydrobiologia, Journal Year: 2023, Volume and Issue: 850(21), P. 4719 - 4744

Published: April 28, 2023

Language: Английский

Citations

8
Short and long-term exposure to the pesticides fipronil and 2,4-D: Effects on behavior and life history of Daphnia magna DOI Open Access
Raquel Aparecida Moreira,

Curro Polo-Castellano,

Andrea Cordero-de-Castro

et al.

Chemosphere, Journal Year: 2022, Volume and Issue: 310, P. 136719 - 136719

Published: Oct. 4, 2022

Language: Английский

Citations

13
Functional diversity of copepod assemblages along a basin-scale latitudinal gradient in the North Pacific Ocean DOI Creative Commons

Qinqin Tang,

Juan Yang, Dong Sun

et al.

Ecological Indicators, Journal Year: 2022, Volume and Issue: 141, P. 109112 - 109112

Published: July 8, 2022

The northern Pacific Ocean is one of the most sensitive areas globally to climate change. Copepods typically account for between 60% and 90% mesozooplankton in open ocean. Because copepods are a key link marine food webs, their response environmental changes an important topic biodiversity ecosystem functioning relationships. relationship copepod assemblages environment from traits-based perspective has been largely unknown until now. In this study, we used functional traits geographic distribution 177 species along latitudinal gradient, ranging 4°S 46°N Ocean, evaluate variation diversity assembly rules assemblages. Based on cluster analysis four traits, seven groups were identified. Redundancy revealed preferences different groups. Large carnivores showed stronger preference higher temperatures than small carnivores, Omnivores herbivores chlorophyll concentrations. detritivores was nearly independent temperature concentration. Most indices non-linear decreasing trends gradient. These remained stable tropic subtropic regions (WARM NPSG), but decreased sharply Kuroshio extension subarctic gyres (KURO PSAG). A null model assemblage significantly varied with latitude: filtering dominant KURO PSAG, whereas both limited similarity played roles WARM NPSG, addition neutral process. Our results suggested that ocean warming, northward shift range specific (such as large carnivores) might alter function zooplankton communities region. This study highlights importance approach pelagic ecosystems at scales.

Language: Английский

Citations

12
Effects of human-induced water level fluctuations on copepod assemblages of the littoral zone of Lake Maggiore DOI Creative Commons
Marco Cifoni, Angela Boggero, Michela Rogora

et al.

Hydrobiologia, Journal Year: 2022, Volume and Issue: 849(16), P. 3545 - 3564

Published: Aug. 1, 2022

Abstract Human-induced water level fluctuations (WLFs) are among the major pressures threatening lake ecosystems. Their effect on meiobenthic species of littoral zone has been poorly investigated. In this study, we aimed at assessing effects human-induced WLFs composition and functionality benthic copepod assemblages Lake Maggiore, Italy Switzerland. From 1942 to present, Maggiore regulated through Miorina Dam. We monitored during different levels defined within period regulation by dam, using taxonomy- trait-based metrics. observed variation in overall abundance biomass copepods, as well number individuals belonging some trait classes such ovigerous females, opportunists, omnivores deposit feeders. None investigated class was completely lost. The results our study suggest that ecosystem services supplied likely altered WLFs. Our findings provide a first picture WLF impacts assemblages, which can be useful for future research expanding other functional traits.

Language: Английский

Citations

12
Substantial unrealised global biodiversity of continental microcrustaceans DOI
Rafael Lacerda Macêdo,

Mathieu Toutain,

Janet W. Reid

et al.

Journal of Plankton Research, Journal Year: 2024, Volume and Issue: 46(3), P. 338 - 347

Published: May 1, 2024

Abstract Freshwater ecosystems provide essential services for human well-being, with their conservation success reliant on the precise quantification of biodiversity. Diplostraca (= Cladocera) and Copepoda are diverse groups microcrustaceans in aquatic ecosystems, important a multitude these services. We examined biodiversity trends groups, utilizing comprehensive dataset, approximately 2341 studies, spanning from early 19th Century to present day, aiming at predicting total number microcrustacean species that will have been described by 2100. Descriptions increased until 1900s, surged, then declined after 1975. The predictive models indicate year 2100, an additional 16–68% cladoceran 37–126% copepod likely be identified, representing significant portion currently unrealised Eighteen prolific authors contributed quarter descriptions, rest spread among numerous authorities. Based our extrapolation, could potentially exceed 6114 2050 9046 notwithstanding extinctions. These findings, which point amount biodiversity, underscore need refine estimates beyond conventional expert opinion. Such accuracy is crucial addressing underappreciated scale current crisis.

Language: Английский

Citations

2
Heatwave‐induced functional shifts in zooplankton communities result in weaker top‐down control on phytoplankton DOI Creative Commons
Thu‐Hương Huỳnh, Zsófia Horváth, Károly Pálffy

et al.

Ecology and Evolution, Journal Year: 2024, Volume and Issue: 14(8)

Published: Aug. 1, 2024

Abstract Freshwater ecosystems are increasingly affected by rising annual mean temperatures and heatwaves. While heatwaves expected to have more immediate effects than temperature increases on local communities, comparative experimental studies largely lacking. We conducted a 1‐month mesocosm experiment test the effect of different warming treatments, constantly raised (+3°C) recurring (+6°C), plankton communities. specifically tested how shifts in zooplankton trait composition functional groups reflected ecosystem function (top‐down control primary producers). found that had stronger (specifically body length mass) groups. Heatwaves led decrease small‐bodied grazers (i.e., Rotifera) dominance larger omnivorous Copepoda, these resulted weaker top‐down control, leading elevated phytoplankton biomass. Altogether, our results highlight importance indirect via inducing composition, which may lead algal blooms.

Language: Английский

Citations

2
Microplastics at Environmentally Relevant Concentrations Had Minimal Impacts on Pelagic Zooplankton Communities in a Large In-Lake Mesocosm Experiment DOI Creative Commons
Desiree Langenfeld, Kennedy Bucci,

Cody Veneruzzo

et al.

Environmental Science & Technology, Journal Year: 2024, Volume and Issue: 58(43), P. 19419 - 19428

Published: Oct. 17, 2024

To assess the potential risks of contemporary levels plastic pollution in freshwater ecosystems, a large-scale experiment was conducted over 10 weeks boreal lake at IISD-Experimental Lakes Area (Ontario, Canada). Fragments common polymers (polyethylene, polystyrene, and polyethylene terephthalate), each with distinct colors buoyancies, were added as single pulse to seven in-lake mesocosms equal contributions range environmentally relevant nominal concentrations (6-29,240 particles/L). Two additional no microplastics used controls. Zooplankton ingested low (mean 0.06 particles/individual ± SD 0.07) generally their total abundance community composition not negatively impacted. Temporary changes however observed; zooplankton calanoid copepods temporarily stimulated by increasing microplastic concentrations, modest, short-term reductions egg production cyclopoid copepod

Language: Английский

Citations

2
The relationship between zooplankton community and environmental factors of Ghrib Dam in Algeria DOI
Somia Hamil,

Djaouida Bouchelouche,

Siham Arab

et al.

Environmental Science and Pollution Research, Journal Year: 2020, Volume and Issue: 28(34), P. 46592 - 46602

Published: Oct. 2, 2020

Language: Английский

Citations

17