Effects of Sphagnum moss and urban runoff on bioavailability of lead and zinc from acidic wetlands of the New Jersey pinelands

Vedagiri, U.; Ehrenfeld, Joan G.

doi:10.1016/0269-7491(91)90005-h

Cited by 3 publications

(2 citation statements)

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“…Moizuk and Livingston (1966) reported that A. rubrum seedlings that grew on floating mats of live Sphagnum in upland Massachusetts bogs usually did not survive more than 1 to 2 years. Vedagiri and Ehrenfeld (1991) conducted a two-month microcosm experiment and observed that roots of A. rubrum seedlings in live Sphagnum grew "loosely" and rarely grew down into sediment underneath the Sphagnum. In this experiment, A, rubrum seedlings may not have survived if allowed to grow for a longer period of time.…”

Section: Greenhouse Experimentsmentioning

confidence: 99%

“…In this experiment, A, rubrum seedlings may not have survived if allowed to grow for a longer period of time. Also, using established seedlings rather than starting with seed (as in Vedagiri and Ehrenfeld (1991)) may have given A. rubrum seedlings a better chance to develop deeper growing roots. The Sphagnum carpets observed in the Pinelands swamps lay directly over peat or muck and are not floating mats.…”

Section: Greenhouse Experimentsmentioning

confidence: 99%

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The influence of microhabitat variation on seedling recruitment ofChamaecyparis thyoides andAcer rubrum

Allison

Ehrenfeld

1999

Wetlands

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Chamaecyparis thyoides (Atlantic white-cedar) swamps are in decline in the New Jersey Pinelands, while Aeer rubrum (red maple) swamps are increasing. One possible reason for this occurrence may be differences in seedling recruitment of the two species. Seedling establishment of different species is expected to vary with physical conditions and requirements for safe sites. This study examined differences in seedling recruitment for C. thyoides and A. rubrum in the New Jersey Pinelands. A field survey of six C. thyoides swamps found that C. thyoides seedlings occur most often under an open or C. thyoides canopy on peaty, cedar needle covered soils or on mats of Sphagnum. In contrast, A. rubrum seedlings were most often found under A. rubrum canopies on Sphagnum mats or grass-dominated bottom areas. A greenhouse experiment was conducted to determine whether differences in microhabitat occupation were related to differences in growth of C. thyoides and A, rubrum seedlings. Seedlings were grown in different soil types (Sphagnum or peat) and at different water levels (inundated, saturated, or moist soil) typical of those found in C. thyoides swamps within the New Jersey Pinelands. Chamaecyparis thyoides experienced the greatest increase in height in moist soils and the least increase in height in inundated soils. Chamaecyparis thyoides achieved greater biomass than A. rubrum in peat soil, while A. rubrum had greater biomass in Sphagnum. These results indicate that C. thyoides and A. rubrum differ in conditions that are best for their seedling growth and that different management schemes may favor one species over the other.

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Section: Greenhouse Experimentsmentioning

confidence: 99%

Section: Greenhouse Experimentsmentioning

confidence: 99%