Untitled

Duin, E.H.S. van; Blom, G.; Los, F.J.; Maffione, Robert A.; Zimmerman, Richard C.; Cerco, Carl F.; Dortch, Mark S.; Best, Elly P. H.

doi:10.1023/a:1017512614680

Cited by 136 publications

(24 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Accordingly, biomanipulation efforts to reduce chlorophyll concentrations often target benthivorous fish high in biomass (e.g., tilapia, carp, bream, and roach) to remove sources of internal nutrient mobilization (Seda and Kubecka 1997;Sondergaard et al 2001). In addition, suspended sediment concentrations can play a major role in light attenuation in lakes, especially in estuaries or shallow lakes with significant wind exposure (Pennock 1985;Van Duin et al 2001). Our results suggest that, to be effective, future attempts to reverse eutrophication in lakes necessitate a deeper consideration of these important potential sources of resilience.…”

Section: Management Implicationsmentioning

confidence: 86%

“…The Acton Lake watershed was targeted for erosion control in the early 1990s (USDA 1992) and as such has undergone increases in the proportion of land in conservation tillage, mainly between 1991 and 2001 (Supporting Information Fig. S1; ).…”

Section: Site Descriptionmentioning

confidence: 99%

“…Eutrophication reduction was not an explicit goal of the increase in conservation tillage in the Acton Lake watershed (USDA 1992). Rather, farmers in the watershed were provided with incentives to implement conservation tillage to reduce soil erosion because the lake was filling in with sediment, thereby reducing its utility as a recreational resource.…”

Section: Management Implicationsmentioning

confidence: 99%

See 2 more Smart Citations

Increased light availability and nutrient cycling by fish provide resilience against reversing eutrophication in an agriculturally impacted reservoir

Kelly

González

Renwick

et al. 2018

Limnology & Oceanography

View full text Add to dashboard Cite

High external nutrient loads to lakes are a primary cause of eutrophication. As such, management activities in the watersheds of heavily impacted systems are commonly implemented to reduce nutrient supply to lakes with high phytoplankton biomass. Although management efforts are often successful, resilience against the reversal of eutrophication may be maintained by a variety of different drivers of phytoplankton biomass. These may include internal sources of nutrients, and increases in light availability with declining sediment loads. We used a 21‐yr dataset to examine the responses of Acton Lake, a eutrophic agriculturally impacted reservoir, to determine the relative strength of potential drivers of changes in phytoplankton biomass through time. We also identified sources of ecosystem resilience that allow the lake to remain eutrophic. Despite declining nutrient concentrations in inflow streams, chlorophyll increased in Acton Lake over approximately the first decade of our study, and remained relatively stable in the second decade. Time series modeling suggests two primary drivers of increased phytoplankton: (1) increased nutrient excretion by detritivorous fish (gizzard shad, Dorosoma cepedianum), and (2) declining sediment loads from the watershed that reduced phytoplankton light limitation. We also identify precipitation patterns and stream discharge as being possible sources of ecosystem resilience, contributing to high loads of nutrients even if concentrations in inflow streams have declined with better management. These results suggest a more comprehensive view of management efforts to reduce eutrophication may be necessary, incorporating interactions among internal nutrient sources, climate variation, and changes in light availability.

show abstract

Section: Management Implicationsmentioning

confidence: 86%

Section: Site Descriptionmentioning

confidence: 99%

Section: Management Implicationsmentioning

confidence: 99%

See 1 more Smart Citation

Increased light availability and nutrient cycling by fish provide resilience against reversing eutrophication in an agriculturally impacted reservoir

Kelly

González

Renwick

et al. 2018

Limnology & Oceanography

View full text Add to dashboard Cite

show abstract

“…Three-year average Secchi depths for each survey and point-specific water depth were used to estimate light availability for each survey point [73][74][75][76], calculated as the proportion of surface irradiance remaining at the substrate (hereafter, light availability). Light at Secchi depth was assumed to be 10% of surface irradiance, which enabled us to use Secchi depth measurements to estimate a lake-level light decay constant, K d [75]:…”

Section: Environmental Datamentioning

confidence: 99%

Niche Models Differentiate Potential Impacts of Two Aquatic Invasive Plant Species on Native Macrophytes

2020

View full text Add to dashboard Cite

Potamogeton crispus (curlyleaf pondweed) and Myriophyllum spicatum (Eurasian watermilfoil) are widely thought to competitively displace native macrophytes in North America. However, their perceived competitive superiority has not been comprehensively evaluated. Coexistence theory suggests that invader displacement of native species through competitive exclusion is most likely where high niche overlap results in competition for limiting resources. Thus, evaluation of niche similarity can serve as a starting point for predicting the likelihood of invaders having direct competitive impacts on resident species. Across two environmental gradients structuring macrophyte communities—water depth and light availability—both P. crispus and M. spicatum are thought to occupy broad niches. For a third dimension, phenology, the annual growth cycle of M. spicatum is typical of other species, whereas the winter-ephemeral phenology of P. crispus may impart greater niche differentiation and thus lower risk of native species being competitively excluded. Using an unprecedented dataset comprising 3404 plant surveys from Minnesota collected using a common protocol, we modeled niches of 34 species using a probabilistic niche framework. Across each niche dimension, P. crispus had lower overlap with native species than did M. spicatum; this was driven in particular by its distinct phenology. These results suggest that patterns of dominance seen in P. crispus and M. spicatum have likely arisen through different mechanisms, and that direct competition with native species is less likely for P. crispus than M. spicatum. This research highlights the utility of fine-scale, abundance-based niche models for predicting invader impacts.

show abstract

“…In situ underwater light apparatus caused by thick surface mats of positively-buoyant cyanobacteria (Tilzer 1987;Van Duin et al 2001). LAMP devices present an opportunity to quantify the effects of such abiotic and biotic induced attenuation on a range of organisms.…”

Section: Gillette Et Almentioning

confidence: 99%

Light Apparatus for Mesocosm Photo‐manipulation (LAMP): An inexpensive waterproof lighting device for within‐lake mesocosm experiments

Gillette

Schulz

Teece

2014

Limnology & Ocean Methods

View full text Add to dashboard Cite

Although light is a key biological driver, light additions to in‐lake experiments can be difficult, if not impossible. To address this problem, we developed an inexpensive Lighting Apparatus for Mesocosm Photo‐manipulation (LAMP), a device that can be deployed within experimental underwater enclosures to increase ambient light levels. Each apparatus consists of 12 Light Emitting Diode (LED) flashlights embedded within a watertight PVC frame. Through the use of a voltage regulator, each is wired to a 12V deep‐cycle marine battery. Twelve LAMPs were deployed during a 3.5‐week mesocosm experiment in Cranberry Lake in the Adirondack region of New York State and run 12 hours per day. LAMPs proved durable under harsh wind and weather conditions. Mesocosms with LAMPs had significantly higher average Photosynthetic Photon Flux Density (PPFD) in the water column than did controls (8% higher integrated Photosynthetic Active Radiation [PAR] over a 1.75 m depth, paired t test, P < 0.01). Other potential research applications for LAMPs include (1) testing light limitation in highly eutrophic systems where algal biomass may be self‐shading, (2) experimentation at depth (e.g., examination of light limitation at the deep chlorophyll maximum), (3) application at different depths or in water bodies where specific wavelengths have been naturally attenuated using LEDs with different spectral properties, (4) testing animal responses to light climate in the field, or (5) collection of macroinvertebrates or fish larvae in modified LAMP‐based light traps.

show abstract

Untitled

Cited by 136 publications

References 30 publications

Increased light availability and nutrient cycling by fish provide resilience against reversing eutrophication in an agriculturally impacted reservoir

Increased light availability and nutrient cycling by fish provide resilience against reversing eutrophication in an agriculturally impacted reservoir

Niche Models Differentiate Potential Impacts of Two Aquatic Invasive Plant Species on Native Macrophytes

Light Apparatus for Mesocosm Photo‐manipulation (LAMP): An inexpensive waterproof lighting device for within‐lake mesocosm experiments

Contact Info

Product

Resources

About