Managing Forests for Increased Regional Water Yield in the Southeastern U.S. Coastal Plain

McLaughlin, Daniel L.; Kaplan, D. A.; Cohen, Matthew J.

doi:10.1111/jawr.12073

Cited by 73 publications

(73 citation statements)

References 44 publications

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“…However, chlorophyll-a was a significant predictor of MCY presence. These results are consistent with other recent studies (Rinta-Kanto et al 2009;Lehman et al 2010;Kudela 2011;Otten et al 2012;McLaughlin et al 2013) that have shown a strong positive correlation between MCY and chlorophyll-a for lakes and other freshwater habitats. Our results also demonstrated a cut point of approximately 15 µg L -1 chlorophyll-a, above which cyanobacteria consistently dominated the phytoplankton assemblage.…”

Section: Discussionsupporting

confidence: 93%

“…The high concentrations of MCY at these sites suggest serious health implications for both wildlife and humans since there are multiple routes of recreational exposure (Lé vesque et al 2004;Backer et al 2008;Backer et al 2010). The ubiquity of cyanobacteria is of concern in these coastal water bodies, which provide critical habitat for resident and migratory birds and fish, and are often sites of human recreational activities in this urbanized landscape (McLaughlin et al 2013).…”

Section: Discussionmentioning

confidence: 99%

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Screening Assessment of Cyanobacteria and Cyanotoxins in Southern California Lentic Habitats

Magrann

Meredith

Sutula

et al. 2015

EMSD

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Harmful bloom-forming cyanobacteria (CyanoHABs) and associated toxins are increasingly prevalent world-wide. We conducted a screening-level study to determine if cyanobacteria and associated cyanotoxins were present in Southern California coastal lakes, ponds, and seasonally tidal lagoons. We evaluated waterbody nutrient status and physiochemical parameters, land use, waterbody type, and habitat type, to determine their utility as screening factors for risk of CyanoHAB blooms. One-time grab samples were collected from 30 sites during July-September 2009. Samples were analyzed for phytoplankton taxonomic composition, nutrients, other physiochemical parameters, and three cyanotoxins: microcystins (MCY), anatoxin-a, and cylindrospermopsin. Cyanobacteria was the predominant taxonomic group in most water bodies in this study, and Microcystis spp. was the predominant genus in 96% of the study sites. Cyanobacteria were equally prevalent among coastal lagoons, depressional wetlands, and lakes in this study. We detected MCY in high concentrations in 10% of our sites, but neither anatoxin-a nor cylindrospermopsin were detected. All of the MCY-positive sites exceeded California action levels for recreational use and World Health Organization (WHO) guidance for human health effects. The prevalence of Microcystis spp. from all study sites indicates a high potential for MCY in these water bodies, although the one-time toxin grab samples likely underestimated the overall toxicity of these sites. Landscape variables, such as developed land use and dominant habitat type, were not found to be predictive indicators of cyanobacterial dominance. However, because cyanobacteria become consistently dominant when chlorophyll-a levels exceed 15 µg L -1 , chlorophyll-a can serve as a significant predictor of MCY.

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Section: Discussionsupporting

confidence: 93%

Section: Discussionmentioning

confidence: 99%

Screening Assessment of Cyanobacteria and Cyanotoxins in Southern California Lentic Habitats

Magrann

Meredith

Sutula

et al. 2015

EMSD

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“…Thus, to calculate the increase of water yield we determined the difference in water yield between a forest management under changing climatic conditions (W cc ) and a forest management under current climatic conditions (W nc )-variation in water yield (in kL). Following McLaughlin et al [23] and Susaeta et al [25], we modelled, respectively, water yield W for each forest management under each climatic regime, and the valuation function of increased water yield G(s):…”

Section: Economic Model Specificationmentioning

confidence: 99%

“…Forest thinnings reduce leaf area and forest transpiration, thus the evapotranspiration is reduced and the water yield is increased [21]. Reported increased water yields after removal of basal area through thinnings range between 3%-64% depending on the forest species, age of the forest, location, and intensity of the thinnings [21,23,24].…”

Section: Introductionmentioning

confidence: 99%

Economic Feasibility of Managing Loblolly Pine Forests for Water Production under Climate Change in the Southeastern United States

Susaeta

Adams

Gonzalez‐Benecke

et al. 2017

Forests

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Abstract:In this study, we assessed the impacts of climate change, forest management, and different forest productivity conditions on the water yield and profitability of loblolly pine stands in the southeastern United States. Using the 3-PG (Physiological Processes Predicting Growth) model, we determined different climatic projections and then employed a stand level economic model that incorporates, for example, prices for timber and increased water yield. We found that, under changing climatic conditions, water yield increases with thinnings and low levels of tree planting density. On average, under moderate climatic conditions, water yield increases by 584 kL·ha −1 and 97 kL·ha −1 for low and high productivity conditions, respectively. Under extreme climatic conditions, water yield increases by 100 kL·ha −1 for low productivity conditions. Land expectation values increase by 96% ($6653.7 ha −1 ) and 95% ($6424.1 ha −1 ) for each climatic scenario compared to those obtained for unthinned loblolly pine plantations managed only for timber production and under current climatic conditions. The contributions of payments for increased water yield to the land values were 38% ($2530.1 ha −1 ) and 30% ($1894.8 ha −1 ). Results suggest that payments for water yield may be a "win-win" strategy to sustainably improve water supply and the economic conditions of forest ownership in the region.

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“…The proportion of precipitation that returns to the atmosphere via evapotranspiration can exceed 90% in Florida's highly productive commercial forests (Gholz and Clark 2002), suggesting that Florida's forests, and indeed forests worldwide, are important regulators of stream flow (Jackson et al 2005). The links between forest management and landscape hydrology (e.g., streamflow and aquifer recharge) also illustrate opportunities to mitigate climate change impacts, and possibly regional water supply conflict, by connecting landowners willing to manage their plantation forests at lower density with groups willing to pay for enhanced water yield (McLaughlin et al 2013).…”

Section: Water Resources Under Future Climatementioning

confidence: 99%

Managing Florida's Plantation Forests in a Changing Climate

Martin¹,

Adams²,

Cohen³

et al. 2017

Florida’s Climate: Changes, Variations, &Amp; Impacts

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Key Messages• Production forestry provides substantial benefits to the state of Florida, including the provision of ecosystem services, such as regulation of water quantity and quality, provision of wildlife habitat and carbon sequestration, and supporting 80,000 jobs and $16.34 billion/year in economic activity.• Climate through the end of the century in the production forestry regions of northern Florida and southern Georgia is predicted to warm from 1.5 °C to almost 3.5 °C, with small increases in annual precipitation, and elevated atmospheric CO 2 concentration. Models predict that these changes will result in substantial increases in potential loblolly pine and slash pine plantation productivity, ranging from 5-35% depending on emissions scenario, species, and location.• Forestry is unique in that it is one of the few industries that sequesters more carbon than it emits. There are opportunities to increase carbon sequestration for mitigation of atmospheric CO 2 through retention or expansion of forested areas, altered forest management, and the use of woody biomass for power generation in place of fossil fuels.• The frequency and intensity of abiotic disturbances, such as wildfire and windstorms, are likely to be affected by climate change; but predictions remain uncertain about the magnitude of change and their effects on the forest resource.• Research is underway to better understand how native forest pests and pathosystems may respond to changing climate. The movement of pests or pathogens into previously nonimpacted areas is of particular concern.• Plantation forests have been a vital part of protecting regional water quantity and quality, and they will continue to be essential features of healthy, productive landscapes as climate changes and the potential for adverse climate impacts on water resources increases.'• The key to adapting forest management to changing climate will be the considered application of silvicultural tools, such as competition control, density and fertility management, and proper choice of species for each site. Keeping abreast of research advances related to these tools will be increasingly important for forest managers as climate conditions change.• There are several viable policy options for harnessing forests to mitigate climate change and increasing forest resilience and adaptation to climate change. However, since 71% of Florida's forests are privately owned, policy options must align well with landowner needs to have adequate impact. Broadly speaking, policies that improve market conditions, reduce burdens (regulatory and economic), and increase economic sustainability for forest landowners would help protect Florida's existing forests and the benefits they provide, and would encourage investment in reforestation of existing forestland and planting new forests on previously unforested land.

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Managing Forests for Increased Regional Water Yield in the Southeastern U.S. Coastal Plain

Cited by 73 publications

References 44 publications

Screening Assessment of Cyanobacteria and Cyanotoxins in Southern California Lentic Habitats

Screening Assessment of Cyanobacteria and Cyanotoxins in Southern California Lentic Habitats

Economic Feasibility of Managing Loblolly Pine Forests for Water Production under Climate Change in the Southeastern United States

Managing Florida's Plantation Forests in a Changing Climate

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