Density and size structure of slash pine stands in the everglades region of south Florida

Doren, Robert F.; Platt, William; Whiteaker, Louis D.

doi:10.1016/0378-1127(93)90009-c

Cited by 44 publications

(44 citation statements)

References 4 publications

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“…This result is in agreement with the short hydroperiod and frequent wildfires in pine savannas in the Everglades (Platt, 1999). Overall, the pollen assemblage of pineland is closely associated with the local vegetation and environment previously described (Doren et al, 1993;Willard et al, 2001;Schmitz et al, 2002;Bernhardt and Willard, 2009;Hanan et al, 2010). …”

Section: Pinelandsupporting

confidence: 88%

“…Pine savannahs in the ENP are dominated by Pinus, Quercus, and containing Burseraceae, Poaceae, Asteraceae, and subtropical hammocks. Such areas are also present in the interior region of the Everglades (e.g., Lostman's Pines and Raccoon Point regions of Big Cypress National Preserve; Doren et al, 1993;Willard et al, 2001;Schmitz et al, 2002;Bernhardt and Willard, 2009;Hanan et al, 2010).…”

Section: Pinelandmentioning

confidence: 99%

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Changes in Modern Pollen Assemblages and Soil Geochemistry along Coastal Environmental Gradients in the Everglades of South Florida

Yao

Liu

2018

Front. Ecol. Evol.

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This study aims to document the changes in modern pollen assemblages and soil elemental chemistry along broad edaphic, hydrological, and salinity gradients, including a previously undocumented secondary environmental gradient, in a vast mangrove-dominated wetland region in the Everglades, South Florida. Twenty-five soil surface samples were collected along an interior wetland transect and an estuarine mangrove transect across coastal zones in the Everglades National Park and subjected to palynological and XRF analyses. Modern pollen spectra from the sampling sites were classified into five a priori groups-wet prairie, pineland, inland mangroves, coastal mangroves, and fringe mangroves, based on the five vegetation types and sub-environments from which they were collected. Discriminant analysis shows that all (100%) of the samples are correctly classified into their a priori groups. On a broad scale, the modern pollen assemblages in surface samples collected from different vegetation types reflect the primary environmental gradient in the Florida Coastal Everglades. A distinct salinity and chemical gradient is also recorded in the XRF results, and the complexity of these gradients is captured at both regional and local scales. At the regional scale, concentrations of all the elements increase from terrestrial toward coastal sites. At the local scale, XRF results show a progressive decrease in most chemical concentrations and in the Cl/Br and Ca/Ti ratios away from the Shark River Slough at each individual site, suggesting that a secondary fluvial/tidal gradient also exists locally as a function of the distance from the river, the main carrier of these chemicals. This study provides new evidence to show that tidal flooding from the Shark River Estuary is directly related to the nutrient availability in the surrounding mangrove forests. These data will deepen our understanding of the environmental drivers behind the vegetation zonation in the region, especially in the mangrove ecosystems, and fill a gap in the pollen data network for the Everglades.

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Section: Pinelandsupporting

confidence: 88%

Section: Pinelandmentioning

confidence: 99%

Changes in Modern Pollen Assemblages and Soil Geochemistry along Coastal Environmental Gradients in the Everglades of South Florida

Yao

Liu

2018

Front. Ecol. Evol.

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“…These communities support a diverse subcanopy of West Indian hardwoods and palms, and a variety of endemic herbs that are alternately encouraged or held back by fire (Noss et al 1995;Sah et al 2004). Pine rocklands once covered a vast contiguous area of southern Florida of over 75,000 ha, but fire suppression and urbanization during the 20th Century have fragmented and reduced the original range by 90% (Doren et al 1993;O'Brien 1998).…”

Section: Introductionmentioning

confidence: 99%

The Dendrochronology of Pinus elliottii in the Lower Florida Keys: Chronology Development and Climate Response

Harley¹,

Grissino-Mayer²,

Horn³

2011

Tree-Ring Research

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South Florida slash pine (Pinus elliottii var. densa) is the southernmost pine species in the United States and the foundation species of the globally endangered pine rockland communities in south Florida. To test if slash pine produces annual growth rings in the Lower Florida Keys, we counted the number of rings on samples collected from the North Big Pine Key site (NBP), which contained a fire scar from a known wildfire and a known date for hurricane-induced tree mortality (2006 or 2007). In addition, a crossdated tree-ring chronology (1871-2009) was developed from living trees and remnant wood found at the site and compared to divisional climate data to determine how the regional climate regime influences radial growth. Our analyses demonstrated that slash pine forms anatomically distinct, annual growth rings with the consistent year-to-year variability necessary for rigorous dendrochronological studies. Response-function and correlation analysis showed that annual growth of slash pine at NBP is primarily influenced by water availability during the growing season. However, no significant correlations were found between tree growth and the Atlantic Multidecadal Oscillation or the El Niñ o-Southern Oscillation. Our study reveals the potential of producing high-quality dendrochronological data in southern Florida from slash pine, which should prove useful in further studies on fire history and tree phenology and for assessing the projected impacts of impending climate change on the fragile pine rockland community.

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“…densa Little & Dor. (south Florida slash pine), which is resistant to understory fires (Doren et al 1993). The understory contains a diverse herbaceous flora, including at least 40 south Florida endemic species, a number of which depend on fire to reduce competition from hardwood species (Loope and Dunevitz 1981;Snyder et al 1990;O'Brien 1998).…”

Section: Study Ecosystem and Speciesmentioning

confidence: 99%

“…The historical fire regime was one of understory fires every three to seven years, which occurred at the beginning of the rainy season when increased lightning strikes ignited dry fuels Slocum et al 2007). These fires suppressed hardwood trees and opened gaps for pine recruitment (Doren et al 1993;. More recently, the fire regime has shifted towards the dry season due to anthropogenic influence (Slocum et al 2007), and in savanna remnants outside Everglades National Park, fires are typically suppressed and Brazilian pepper has invaded extensive areas (Loope and Dunevitz 1981).…”

Section: Study Ecosystem and Speciesmentioning

confidence: 99%

Fire Effects on Demography of the Invasive Shrub Brazilian Pepper (Schinus terebinthifolius) in Florida Pine Savannas

Stevens¹,

Beckage²

2010

Natural Areas Journal

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Density and size structure of slash pine stands in the everglades region of south Florida

Cited by 44 publications

References 4 publications

Changes in Modern Pollen Assemblages and Soil Geochemistry along Coastal Environmental Gradients in the Everglades of South Florida

Changes in Modern Pollen Assemblages and Soil Geochemistry along Coastal Environmental Gradients in the Everglades of South Florida

The Dendrochronology of Pinus elliottii in the Lower Florida Keys: Chronology Development and Climate Response

Fire Effects on Demography of the Invasive Shrub Brazilian Pepper (Schinus terebinthifolius) in Florida Pine Savannas

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