Impact of acid fog and ozone on coastal red spruce

Jagels, Richard; Carlisle, Jonathan D.; Cunningham, Richard A.; Serreze, S.; Tsai, Pei-Hsun

doi:10.1007/bf00282378

Cited by 33 publications

(13 citation statements)

References 21 publications

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“…Absorption values were measured with a Bausch & Lomb Spectronic 1001 spectrophotometer. The concentrations of the chlor-315 ophylls were determined according to the equations established by Lichtenthaler (1987) for 80 % acetone, since the pigments have almost the same absorption spectra between 600 and 700 nm in both solvents (Shoaf & Lium, 1976;Hiscox & Israelslam, 1979;Ronen & Galun, 1984;Jagels et al, 1989). Also the ratio OD435/OD415, used to measure chlorophyll a/phaeophytin a, proposed by Ronen & Galun (1984) as a parameter for chlorophyll degradation, was determined.…”

Section: Chlorophvu Content Measurementsmentioning

confidence: 99%

Dose—response relationships for SO₂ fumigations in the lichens Evernia prunastri (L.) Ach. and Ramalina fraxinea (L.) Ach.

1992

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SUMMARYSulphur dioxide fumigation of the lichens Evernia prunastri (L.) Ach and Ramalina fraxinea (L.) Ach, whose thallus water content was held at 100-120",, throughout each experiment, resulted in changes in net photosynthesis, dark respiration and chlorophyll content in relation to both concentration and duration of exposure. Net photosynthesis was the most sensitive response variable. Significant reduction in chlorophyll content was found when no recovery in net photosynthesis occurred after two weeks. A reduction in dark respiration was only found at high SO., concentrations. Evernia prunastri was affected by lower concentrations and shorter exposure times than Ramalina fraxinea and the data for both species showed dose-response relationships.

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Section: Chlorophvu Content Measurementsmentioning

confidence: 99%

Dose—response relationships for SO₂ fumigations in the lichens Evernia prunastri (L.) Ach. and Ramalina fraxinea (L.) Ach.

1992

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“…The inputs of acids and Hg are well characterized at Acadia NP, based on data from the National Atmospheric Deposition Program (NADP) since 1980 (NADP, 2004), and Mercury Deposition Network (MDN) since 1995. Fog pH below 3.5 has been documented (Jagels, Cunningham, Serreze, & Tsai, 1989;Weathers et al, 1988).…”

Section: Introductionmentioning

confidence: 98%

Watershed Nitrogen and Mercury Geochemical Fluxes Integrate Landscape Factors in Long-term Research Watersheds at Acadia National Park, Maine, USA

Kahl

Nelson

Fernandez

et al. 2006

Environ Monit Assess

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This paper is an overview of this special issue devoted to watershed research in Acadia National Park (Acadia NP). The papers address components of an integrated research program on two upland watersheds at Acadia NP, USA (44 degrees 20' N latitude; 68 degrees 15' E longitude). These watersheds were instrumented in 1998 to provide a long-term foundation for regional ecological and watershed research. The research was initiated as part of EPA/NPS PRIMENet (Park Research and Intensive Monitoring of Ecosystems Network), a system of UV-monitoring stations and long-term watershed research sites located in US national parks. The initial goals at Acadia NP were to address research questions about mercury, acid rain, and nitrogen saturation developed from prior research. The project design was based on natural differences in forests and soils induced by an intense wildfire in one watershed in 1947. There is no evidence of fire in the reference watershed for several hundred years. We are testing hypotheses about controls on surface water chemistry, and bioavailability of contaminants in the contrasting watersheds. The unburned 47-ha Hadlock Brook watershed is 70% spruce-fir mature conifer forest. In contrast, burned 32-ha Cadillac Brook watershed, 4 km northeast of the Hadlock watershed, is 20% regenerating mixed northern hardwoods and 60% shrub/rocky balds. Differences in atmospheric deposition are controlled primarily by forest stand composition and age. The watersheds are gauged and have water chemistry stations at 122 m (Cadillac) and 137 m (Hadlock); watershed maximum elevations are 468 and 380 m, respectively. The stream water chemistry patterns reflect, in part, the legacy of the intense fire, which, in turn, controls differences in forest vegetation and soil characteristics. These factors result in higher nitrogen and mercury flux from the unburned watershed, reflecting differences in atmospheric deposition, contrasting ecosystem pools of nitrogen and mercury, and inferred differences in internal cycling and bioavailabilty.

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“…Studies have indicated that airborne pollutants are being transported along the eastern United States coastline and are impacting ecosystems along coastal Maine (National Atmospheric Deposition Program (NADP) 2003;Jagels, Carlisle, Cunningham, Serreze, & Tsai 1989). One of the highlights of coastal Maine is Acadia National Park (ANP) on Mount Desert Island.…”

Section: Introductionmentioning

confidence: 99%

Forest Vegetation Monitoring and Foliar Chemistry of Red Spruce and Red Maple at Acadia National Park in Maine

Wiersma

Elvir²,

Eckhoff

2006

Environ Monit Assess

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The USDA Forest Service Forest Health Monitoring (FHM) program indicators, including forest mensuration, crown condition classification, and damage and mortality indicators were used in the Cadillac Brook and Hadlock Brook watershed forests at Acadia National Park (ANP) along coastal Maine. Cadillac Brook watershed burned in a wildfire in 1947. Hadlock Brook watershed, undisturbed for several centuries, serves as the reference site. These two small watersheds have been gauged and monitored at ANP since 1998 as part of the Park Research and Intensive Monitoring of Ecosystems Network (PRIMENet). Forest vegetation at Hadlock Brook was dominated by late successional species such as Acer saccharum, Fagus grandifolia, Betula alleghaniensis, Acer rubrum and Picea rubens. Forest vegetation at Cadillac Brook, on the other hand, was younger and more diverse and included those species found in Hadlock as well as early successional species such as Betula papyrifera and Populus grandidentata. Differences in forest species composition and stand structure were attributed to the severe wildfire that affected the Cadillac Brook watershed. Overall, the forests at these ANP watersheds were healthy with a low percentage (

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Impact of acid fog and ozone on coastal red spruce

Cited by 33 publications

References 21 publications

Dose—response relationships for SO₂ fumigations in the lichens Evernia prunastri (L.) Ach. and Ramalina fraxinea (L.) Ach.

Dose—response relationships for SO₂ fumigations in the lichens Evernia prunastri (L.) Ach. and Ramalina fraxinea (L.) Ach.

Watershed Nitrogen and Mercury Geochemical Fluxes Integrate Landscape Factors in Long-term Research Watersheds at Acadia National Park, Maine, USA

Forest Vegetation Monitoring and Foliar Chemistry of Red Spruce and Red Maple at Acadia National Park in Maine

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Impact of acid fog and ozone on coastal red spruce

Cited by 33 publications

References 21 publications

Dose—response relationships for SO2 fumigations in the lichens Evernia prunastri (L.) Ach. and Ramalina fraxinea (L.) Ach.

Dose—response relationships for SO2 fumigations in the lichens Evernia prunastri (L.) Ach. and Ramalina fraxinea (L.) Ach.

Watershed Nitrogen and Mercury Geochemical Fluxes Integrate Landscape Factors in Long-term Research Watersheds at Acadia National Park, Maine, USA

Forest Vegetation Monitoring and Foliar Chemistry of Red Spruce and Red Maple at Acadia National Park in Maine

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Dose—response relationships for SO₂ fumigations in the lichens Evernia prunastri (L.) Ach. and Ramalina fraxinea (L.) Ach.

Dose—response relationships for SO₂ fumigations in the lichens Evernia prunastri (L.) Ach. and Ramalina fraxinea (L.) Ach.