A chronicle of a killer alga in the west: ecology, assessment, and management of Prymnesium parvum blooms

Roelke, Daniel L.; Barkoh, Aaron; Brooks, Bryan W.; Grover, James P.; Hambright, K. David; LaClaire, John W.; Moeller, P.; Patiño, Reynaldo

doi:10.1007/s10750-015-2273-6

Cited by 85 publications

(51 citation statements)

References 138 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Hydrologically conditioned elevation 202 of the studies in this field are descriptive, although with good predictions (e.g., Cylindrospermopsis raciborskii, Prymnesium parvum, Skeletonema potamos; Padis ak 1997, Duleba et al 2014, Roelke et al 2016. The potential distribution model developed here for C. furcoides in South America had a very good performance for the study area, with predictions that indicate that most of the rivers in the Del Plata basin and the South Atlantic basin sensu Agostinho et al (2007) contain suitable habitats for the species.…”

Section: Discussionmentioning

confidence: 99%

Potential distribution of the invasive freshwater dinoflagellate Ceratium furcoides (Levander) Langhans (Dinophyta) in South America

Zaburlín

Vogler

Molina

et al. 2016

Journal of Phycology

View full text Add to dashboard Cite

Dinoflagellates of the genus Ceratium are predominantly found in marine environments, with a few species in inland waters. Over the last decades, the freshwater species Ceratium hirundinella and Ceratium furcoides have colonized and invaded several South American basins. The purpose of this study was to create a distribution model for the invasive dinoflagellate C. furcoides in South America in order to further investigate the basins at potential risk, as well as the environmental conditions that influence its expansion. This species is known to develop blooms due to its mobility, resistance to sedimentation, and optimized use of resources. Although nontoxic, blooms of the species cause many problems to both the natural ecosystems and water users. Potential distribution was predicted by using a maximum entropy algorithm (MaxEnt). Model was run with 101 occurrences obtained from the scientific literature, and climatic, hydrological and topographic variables. The developed model had a very good performance for the study area. The most susceptible areas identified were mainly concentrated in the basins between southeastern Brazil and northeastern Argentina. Besides already affected regions, new potentially suitable areas were identified in temperate regions of South America. The information generated here will be useful for authorities responsible for water and watershed management to monitor the spread of this species and address problems related to its establishment in new environments.

show abstract

Section: Discussionmentioning

confidence: 99%

Potential distribution of the invasive freshwater dinoflagellate Ceratium furcoides (Levander) Langhans (Dinophyta) in South America

Zaburlín

Vogler

Molina

et al. 2016

Journal of Phycology

View full text Add to dashboard Cite

show abstract

“…Also contributing to the use of P. parvum as a model for studying microbial invasions is a substantial body of literature dealing primarily with ecotoxicological aspects of P. parvum (25,26). However, there are several recent observational (27)(28)(29) and experimental field studies (30,31) examining the potential roles of immigration and nutrient availability in population dynamics and impacts of P. parvum.…”

mentioning

confidence: 99%

Dynamics of an experimental microbial invasion

Acosta

Zamor

Najar

et al. 2015

Proc. Natl. Acad. Sci. U.S.A.

Self Cite

View full text Add to dashboard Cite

The ecological dynamics underlying species invasions have been a major focus of research in macroorganisms for the last five decades. However, we still know little about the processes behind invasion by unicellular organisms. To expand our knowledge of microbial invasions, we studied the roles of propagule pressure, nutrient supply, and biotic resistance in the invasion success of a freshwater invasive alga, Prymnesium parvum, using microcosms containing natural freshwater microbial assemblages. Microcosms were subjected to a factorial design with two levels of nutrient-induced diversity and three levels of propagule pressure, and incubated for 7 d, during which P. parvum densities and microbial community composition were tracked. Successful invasion occurred in microcosms receiving high propagule pressure whereas nutrients or community diversity played no role in invasion success. Invaded communities experienced distinctive changes in composition compared with communities where the invasion was unsuccessful. Successfully invaded microbial communities had an increased abundance of fungi and ciliates, and decreased abundances of diatoms and cercozoans. Many of these changes mirrored the microbial community changes detected during a natural P. parvum bloom in the source system. This role of propagule pressure is particularly relevant for P. parvum in the reservoirdominated southern United States because this species can form large, sustained blooms that can generate intense propagule pressures for downstream sites. Human impact and global climate change are currently causing widespread environmental changes in most southern US freshwater systems that may facilitate P. parvum establishment and, when coupled with strong propagule pressure, could put many more systems at risk for invasion. microbial ecology | diversity | invasion resistance | propagule pressure | Prymnesium

show abstract

“…As salinity of freshwater increases, native species disappear whereas a few generalist more tolerant species prevail. An example is salinity‐tolerant toxic golden algae that replace native flora in lakes with increasing salinity (Roelke et al, 2015). The changes then spiral up the food web, ultimately imperiling ecosystem services.…”

Section: Resultsmentioning

confidence: 99%

In Water‐Limited Landscapes, an Anthropocene Exchange: Trading Lakes for Irrigated Agriculture

Wine

Laronne

2020

Earth's Future

View full text Add to dashboard Cite

Lakes-quintessential features of Earth's surface prized from perspectives of water security, aquatic ecosystems, and recreation alike-are shrinking in water-limited regions of all of Earth's inhabited continents. Here we assessed Landsat-derived long-term decrease in global lake area relative to historical lake extent aiming to determine the role of recent Anthropocene levels of irrigated agriculture in the global phenomenon of lake desiccation. As of 2015, 11% (1.8 · 10 5 km 2 ) of global lake area has already been lost, primarily due to increased water consumption in support of irrigated agriculture in endorheic basins within water-limited regions. However, current levels of irrigated agriculture portend substantial additional shrinkage of global lakes before reaching new equilibria with present-day inflows, with an additional 60-130% increase in endorheic lake loss anticipated. The time required for shrinking lakes to attain new equilibria ranges from decades to centuries depending on lake hyposometry. Even a small decrease in lake area can portend lake transition from exorheic to endorheic and dramatic reductions in water quality. Thus, lake area changes severely understate the perilous condition of global lakes. The watershed area contributing to shrinking (endorheic and exorheic) lakes accounts for 18% of Earth's land area, far too large for the irrigated agriculture therein to be transferred elsewhere in order to save these lakes, though continued developments in the efficiency of water consumption in agriculture and urban areas can save significant quantities of water. This suggests that global lake shrinkage may be a harbinger signaling mankind having exceeded Earth's sustainable carrying capacity.Plain Language Summary Today, a host of processes influence the terrestrial water balance.These processes drive the observed shrinkage of lakes in water-limited regions of all inhabited continents. Typically, lake shrinkage is attributed either to climate change or unsustainable increases in human water consumption. However, while drivers of lake desiccation have been explored for individual lakes, the causes of this phenomenon have not been explored at the global scale. We therefore propose a simple conceptual model in which lake area and agricultural area are exchangeable in closed basins. We find that this simple model accurately determines the role of agriculture in loss of endorheic lakes. This model demonstrates that irrigated agriculture is the primary driver of desiccation of global lakes.

show abstract

A chronicle of a killer alga in the west: ecology, assessment, and management of Prymnesium parvum blooms

Cited by 85 publications

References 138 publications

Potential distribution of the invasive freshwater dinoflagellate Ceratium furcoides (Levander) Langhans (Dinophyta) in South America

Potential distribution of the invasive freshwater dinoflagellate Ceratium furcoides (Levander) Langhans (Dinophyta) in South America

Dynamics of an experimental microbial invasion

In Water‐Limited Landscapes, an Anthropocene Exchange: Trading Lakes for Irrigated Agriculture

Contact Info

Product

Resources

About