Ecological Consequences of Root Grafting in Tabonuco (Dacryodes excelsa) Trees in the Luquillo Experimental Forest, Puerto Rico

Biotropica ◽  
1993 ◽  
Vol 25 (1) ◽  
pp. 28 ◽  
Author(s):  
Khadga Basnet ◽  
F. N. Scatena ◽  
Gene E. Likens ◽  
Ariel E. Lugo
Keyword(s):  
Puerto Rico ◽  
Ecological Consequences ◽  
Luquillo Experimental Forest ◽  
Dacryodes Excelsa ◽  
Root Grafting

Orchid—phorophyte relationships in a forest watershed in Puerto Rico

1993 ◽  
Vol 9 (2) ◽  
pp. 231-240 ◽  
Author(s):  
Luis E. Migenis ◽  
James D. Ackerman
Keyword(s):  
Puerto Rico ◽  
Large Scale ◽  
Abundant Species ◽  
Luquillo Experimental Forest ◽  
Orchid Species ◽  
Host Trees ◽  
Dacryodes Excelsa ◽  
Abundance And Diversity ◽  
Guarea Guidonia ◽  
Tropical Watershed

ABSTRACTOrchid diversity, distribution and host specificity were examined in a tropical watershed in the Luquillo Experimental Forest of Puerto Rico. Eleven orchid species occur in the area. The low diversity is attributed to island isolation and large-scale hurricane disturbances. Pleurothallis ruscifolia and Maxillaria coccinea were by far the most abundant species in the area and occurred on the largest number of host species and host zones. None of the orchids were host specific or host zone specialists although preferences for hosts and vertical host zones were encountered.Only 8.2% of the 426 trees and shrubs and 24.4% of the 45 species surveyed were orchid phorophytes (= hosts). Examination of host distribution by diameter at breast height (DBH) showed that 80.5% were greater than 16 cm DBH. Orchid species in the area tend to occur on rough bark hosts, but their preferences are not statistically significant. Guarea guidonia (Meliaceae) and Dacryodes excelsa (Burseraceae) are the two most important orchid hosts in our study site comprising 62.9% of all host trees. Careful management of these two tree species is suggested, since these species may be crucial to the maintenance of orchid abundance and diversity in the area.

An annotated list of the flora of the Bisley Area Luquillo Experimental Forest, Puerto Rico 1987 to 1992

1993 ◽  
Author(s):  
Jesus Danilo Chinea ◽  
Renee J. Beymer ◽  
Carlos Rivera ◽  
Ines Sastre de Jeses ◽  
F.N. Scatena
Keyword(s):  
Puerto Rico ◽  
Luquillo Experimental Forest ◽  
Annotated List

Hurricane Impacts in New England and Puerto Rico

2003 ◽  
Author(s):  
Emery R. Boose
Keyword(s):  
Puerto Rico ◽  
New England ◽  
Salt Water ◽  
Woody Debris ◽  
Wind Damage ◽  
River Channels ◽  
Fuel Loading ◽  
Luquillo Experimental Forest ◽  
The North ◽  
Hurricane Disturbance

Hurricanes have a profound effect on many coastal ecosystems. Direct impacts often include wind damage to trees, scouring and flooding of river channels, and salt-water inundation along shorelines (Simpson and Riehl 1981; Diaz and Pulwarty 1997). In some areas, secondary impacts may include landslides triggered by heavy rains (Scatena and Larson 1991) or catastrophic dry-season fires resulting from heavy fuel loading (Whigham in press). This chapter will focus on the longterm impacts of hurricane wind damage at two LTER sites, the Harvard Forest (HFR) in central New England and the Luquillo Experimental Forest (LUQ) in northeastern Puerto Rico. These two sites, both located in the North Atlantic hurricane basin and occasionally subject to the same storms, provide interesting examples of tropical and temperate hurricane disturbance regimes. Wind damage from a single hurricane is often highly variable (Foster 1988). Damage to individual trees can range from loss of leaves and fine branches, which can significantly alter surface nutrient inputs (Lodge et al. 1991), to bole snapping or uprooting, which can significantly alter coarse woody debris and soil microtopography (Carlton and Bazzaz 1998a and b). At the stand level, damage can range from defoliation to individual tree gaps to extensive blowdowns, creating different pathways for regeneration (Lugo 2000). At landscape and regional levels, complex patterns of damage are created by the interaction of meteorological, topographic, and biological factors (Boose et al. 1994). Adding to this spatial complexity is the fact that successive hurricanes are not necessarily independent in terms of their effects. A single storm lasting several hours may have effects that persist for decades (Foster et al. 1998). And forest susceptibility to wind damage is strongly influenced by composition and structure, which in turn are strongly influenced by previous disturbance history (Foster and Boose 1992). Thus, the impacts of a single hurricane may depend in part on the impacts of earlier storms as well as on other previous disturbances and land use. Hurricanes, like other disturbances, both create and respond to spatial heterogeneity (Turner et al. 2003). To understand the long-term ecological role of hurricanes at a given site, we must consider these three sets of questions: (1) What is the hurricane disturbance regime?

scholarly journals On the Shoulders of Giants: Continuing the Legacy of Large-Scale Ecosystem Manipulation Experiments in Puerto Rico

Forests ◽  
2019 ◽  
Vol 10 (3) ◽  
pp. 210 ◽  
Author(s):  
Tana Wood ◽  
Grizelle González ◽  
Whendee Silver ◽  
Sasha Reed ◽  
Molly Cavaleri
Keyword(s):  
Puerto Rico ◽  
Tropical Forests ◽  
Large Scale ◽  
Field Experiments ◽  
Management Strategies ◽  
Luquillo Experimental Forest ◽  
Hurricane Disturbance ◽  
Wide Range ◽  
History Of ◽  
Forest Function

There is a long history of experimental research in the Luquillo Experimental Forest in Puerto Rico. These experiments have addressed questions about biotic thresholds, assessed why communities vary along natural gradients, and have explored forest responses to a range of both anthropogenic and non-anthropogenic disturbances. Combined, these studies cover many of the major disturbances that affect tropical forests around the world and span a wide range of topics, including the effects of forest thinning, ionizing radiation, hurricane disturbance, nitrogen deposition, drought, and global warming. These invaluable studies have greatly enhanced our understanding of tropical forest function under different disturbance regimes and informed the development of management strategies. Here we summarize the major field experiments that have occurred within the Luquillo Experimental Forest. Taken together, results from the major experiments conducted in the Luquillo Experimental Forest demonstrate a high resilience of Puerto Rico’s tropical forests to a variety of stressors.

scholarly journals The Ecological Consequences of Socioeconomic and Land-Use Changes in Postagriculture Puerto Rico

BioScience ◽  
2003 ◽  
Vol 53 (12) ◽  
pp. 1159 ◽  
Author(s):  
H. RICARDO GRAU ◽  
T. MITCHELL AIDE ◽  
JESS K. ZIMMERMAN ◽  
JOHN R. THOMLINSON ◽  
EILEEN HELMER ◽  
...  
Keyword(s):  
Land Use ◽  
Puerto Rico ◽  
Land Use Changes ◽  
Ecological Consequences

scholarly journals Bacterial Associations with Weathering Minerals at the Regolith-Bedrock Interface, Luquillo Experimental Forest, Puerto Rico

2012 ◽  
Vol 29 (9) ◽  
pp. 792-803 ◽  
Author(s):  
Morgan L. Minyard ◽  
Mary Ann Bruns ◽  
Laura J. Liermann ◽  
Heather L. Buss ◽  
Susan L. Brantley
Keyword(s):  
Puerto Rico ◽  
Luquillo Experimental Forest ◽  
Bacterial Associations

scholarly journals Evaporation from a tropical rain forest, Luquillo Experimental Forest, eastern Puerto Rico

2000 ◽  
Vol 36 (8) ◽  
pp. 2183-2196 ◽  
Author(s):  
J. Schellekens ◽  
L. A. Bruijnzeel ◽  
F. N. Scatena ◽  
N. J. Bink ◽  
F. Holwerda
Keyword(s):  
Puerto Rico ◽  
Rain Forest ◽  
Tropical Rain Forest ◽  
Luquillo Experimental Forest
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