scholarly journals The Role of Fire-Return Interval and Season of Burn in Snag Dynamics in a South Florida Slash Pine Forest

Fire Ecology ◽  
2012 ◽  
Vol 8 (3) ◽  
pp. 18-31 ◽  
Author(s):  
John D. Lloyd ◽  
Gary L. Slater ◽  
James R. Snyder
Keyword(s):  
Pine Forest ◽  
Slash Pine ◽  
South Florida ◽  
Fire Return Interval ◽  
Return Interval ◽  
Season Of Burn ◽  
Snag Dynamics

Postfire survival in south Florida slash pine: interacting effects of fire intensity, fire season, vegetation, burn size, and bark beetles

2001 ◽  
Vol 10 (1) ◽  
pp. 53 ◽  
Author(s):  
Eric S. Menges ◽  
Mark A. Deyrup
Keyword(s):  
Bark Beetles ◽  
Pinus Elliottii ◽  
Slash Pine ◽  
South Florida ◽  
Path Model ◽  
Fire Season ◽  
Fire Intensity ◽  
South Central ◽  
Season Of Burn ◽  
In Fire

We used path analysis to examine postfire survival of south Florida slash pine (Pinus elliottii var. densa) at Archbold Biological Station in south-central Florida. We considered the interacting factors of bark beetle infestation, fire intensity (estimated by bark char, percentage of canopy green, and other measures), season of burn, burn size, and vegetation structure and composition. Trees were sampled in 24 burned areas for 3 years after each fire. Fires on recently-burned sites (5–19 years since previous fire) killed fewer trees (44% mortality) than fires on sites > 25 years postfire (71%). For long-unburned sites, we used multiple regression to examine 35 variables and form a path model linking nine variables at four levels. Pine survival was most affected by season of burn; fall burns decreased survival indirectly through increases in fire intensity. Higher mortality was associated with greater char height, larger area burned, more intense attacks by the beetle Platypus, occurrence of hickory scrub or flatwoods vegetation, and complete needle consumption. The final path model explained over 90% of the variation in pine survival. It suggested that beetle effects reflect fire intensity, and detailed many complex interactions. Both preburn and fire intensity data were needed to explain a high amount of variance. Analyses of survival within burns produced similar results, but added some patterns due to vegetation differences within burns and higher survival for larger trees. Fire-induced south Florida slash pine mortality did not spread to trees growing in adjacent, unburned areas. Fire intensity may influence pine densities over the upland landscape in all but the most xeric and hydric sites. Fire management to maximize pine survival is feasible, but management for landscape heterogeneity will tolerate variation in fire intensity and pine survival.

The Role of the Everglades Mangrove Ecotone Region (EMER) in Regulating Nutrient Cycling and Wetland Productivity in South Florida

2011 ◽  
Vol 41 (sup1) ◽  
pp. 633-669 ◽  
Author(s):  
Victor H. Rivera-Monroy ◽  
Robert R. Twilley ◽  
Stephen E. Davis ◽  
Daniel L. Childers ◽  
Marc Simard ◽  
...  
Keyword(s):  
Nutrient Cycling ◽  
South Florida

scholarly journals The role of silicon in suppressing gray leaf spot development in St. Augustinegrass

EDIS ◽  
1969 ◽  
Vol 2003 (17) ◽  
Author(s):  
M. Brecht ◽  
Lawrence Datnoff ◽  
Russell Nagata ◽  
Thomas Kucharek
Keyword(s):  
Leaf Spot ◽  
Magnaporthe Grisea ◽  
Field Research ◽  
Cooperative Extension Service ◽  
Gray Leaf Spot ◽  
South Florida ◽  
Pyricularia Grisea ◽  
Publication Date ◽  
University Of Florida

If you maintain St. Augustinegrass (Stenotaphrum secundatum) in Florida, its possible that gray leaf spot, caused by the fungus Magnaporthe grisea (Pyricularia grisea), will be a problem in your lawn or sod field. Research has proven the effectiveness of amendments of silicon (Si) to soils that are deficient in soluble Si (<25 mg/L) for control of diseases on a number of hosts including rice and sugarcane, which are regularly fertilized with Si in south Florida. This document is PP-67, one of a series of the Plant Pathology Department, Florida Cooperative Extension Service, Institute of Food and Agricultural Sciences, University of Florida. Publication date: July, 2003. https://edis.ifas.ufl.edu/pp114

A Public's Awareness of Regional Parks and Park Management Agencies with Implications for Management-oriented Interpretation

2006 ◽  
Vol 11 (2) ◽  
pp. 59-64
Author(s):  
Carin E. Vadala ◽  
Robert D. Bixler ◽  
William E. Hammitt
Keyword(s):  
Resource Management ◽  
National Parks ◽  
National Park ◽  
National Park Service ◽  
South Florida ◽  
Park Management ◽  
Evaluation Strategies ◽  
Park Service ◽  
Management Issues

South Florida summer residents (n=1806) from five counties (Broward, Collier, Lee, Miami-Dade, and Monroe Counties) were asked to recall the names of two units of the National Park Service and, when prompted, to recognize each of the four national park units located in south Florida. Only 8.4% of respondents could name two units of the National Park Service, yet when prompted many more stated that they had at least heard of the national parks in south Florida. Interpreters may be able to help raise visitor awareness of resource management issues by including information about the role of the agency in their talks or as part of their interpretive theme. Suggestions for further research and evaluation strategies are provided.

Ecosystem Management and the Florida Everglades: The Role of Social Scientists

1997 ◽  
Vol 29 (1) ◽  
pp. 99-107 ◽  
Author(s):  
J. Walter Milon ◽  
Clyde F. Kiker ◽  
Donna J. Lee
Keyword(s):  
South Florida ◽  
Florida Everglades ◽  
Management Approach ◽  
Adaptive Procedure ◽  
Social Scientists ◽  
Evaluation Procedures ◽  
South Florida Ecosystem ◽  
Policy Objectives ◽  
High Degree

AbstractRecently many state and federal agencies in the U.S. have embraced an ecosystems management approach to environmental protection and regulation. This approach requires a high degree of cooperation between natural and social scientists to translate policy objectives into research hypotheses, models, and evaluation procedures to guide implementation decisions. An adaptive procedure to guide interdisciplinary research is described and illustrated with highlights of recent progress and pitfalls from the restoration initiative for the Everglades/South Florida ecosystem.

The role of hatching asynchrony in brood size reduction of the great titParus majorin a Mediterranean pine forest

2008 ◽  
Vol 42 (5-8) ◽  
pp. 375-380 ◽  
Author(s):  
Timoleon Theofanellis ◽  
Eleni Galinou ◽  
Triantaphyllos Akriotis
Keyword(s):  
Brood Size ◽  
Pine Forest ◽  
Size Reduction ◽  
Hatching Asynchrony ◽  
Mediterranean Pine

Climate - fire interactions during the Holocene: a test of the utility of charcoal morphotypes in a sediment core from the boreal region of north-western Ontario (Canada)

2012 ◽  
Vol 21 (6) ◽  
pp. 640 ◽  
Author(s):  
Melissa T. Moos ◽  
Brian F. Cumming
Keyword(s):  
Sediment Core ◽  
Late Holocene ◽  
Fold Increase ◽  
Fire Frequency ◽  
Accumulation Rates ◽  
Fire Return Interval ◽  
The Holocene ◽  
Return Interval ◽  
In Fire ◽  
North Western

Charcoal accumulation rates and fire-return intervals were calculated from total charcoal and charcoal morphotypes over the Holocene, from a well-dated sediment core from Lake 239 located in north-western Ontario, and compared with previously published independent climate reconstructions. Both total and morphotype analysis show a two-to-three fold increase in accumulation rates in the early-to-mid Holocene (range: 1 to 6 pieces cm–2 year–1) compared with the early and late Holocene (range: 0 to 2 pieces cm–2 year–1). Fire-return intervals and fire frequencies calculated during these periods, based on peak analysis, showed very different trends. The fire-return interval based on Type M charcoal, a morphotype associated with primary charcoal deposition, was high during the early and late Holocene, and low from ~7500 to 4000 cal year BP, with high inferred fire frequency during the warm mid-Holocene (~12.5 fires per 1000 years), compared with <5 fires per 1000 years over the rest of the Holocene, whereas fire-return interval and fire frequency based on total charcoal did not show patterns consistent with climate. These results suggest that a two- to three-fold increase in fire frequency would not be unexpected in the future under a predicted warmer climate.

Estimating natural forest fire return interval in northeastern Ontario, Canada

2009 ◽  
Vol 258 (9) ◽  
pp. 2037-2045 ◽  
Author(s):  
Michael T. Ter-Mikaelian ◽  
Stephen J. Colombo ◽  
Jiaxin Chen
Keyword(s):  
Forest Fire ◽  
Natural Forest ◽  
Fire Return Interval ◽  
Return Interval

How does increased fire frequency affect carbon loss from fire? A case study in the northern boreal forest

2011 ◽  
Vol 20 (7) ◽  
pp. 829 ◽  
Author(s):  
C. D. Brown ◽  
J. F. Johnstone
Keyword(s):  
Boreal Forests ◽  
Forest Canopy ◽  
Short Interval ◽  
Fire Frequency ◽  
Fire Return Interval ◽  
Fire Cycle ◽  
Return Interval ◽  
Canopy Soil ◽  
Carbon Stores ◽  
Stand Conditions

Fire frequency is expected to increase due to climate warming in many areas, particularly the boreal forests. An increase in fire frequency may have important effects on the global carbon cycle by decreasing the size of boreal carbon stores. Our objective was to quantify and compare the amount of carbon consumed during and the amount of carbon remaining following fire in black spruce (Picea mariana (Mill.) BSP) forests burned after long v. short intervals. We hypothesised that stands with a shortened fire return interval would have a higher carbon consumption than those experiencing a historically typical fire return interval. Using field measurements of forest canopy, soil organic horizons and adventitious roots, we reconstructed pre-fire stand conditions to estimate the biomass lost in each fire and the effects on post-fire residual carbon stores. We found evidence of a higher loss of carbon following two fire events that recurred after a short interval, resulting in a much greater total reduction in carbon relative to pre-fire or mature stand conditions. Consequently, carbon storage across disturbance intervals was dramatically reduced following short-interval burns. Recovery of these stores would require a subsequent lengthening of the fire cycle, which appears unlikely under future climate scenarios.

Sign in / Sign up

Export Citation Format

Share Document