You are here: Home / Research Topics / Research Highlights / Search Results

Research Highlights

Search Results

Below are the highlights meeting your search criteria. To perform another search, click here.

Highlight IDTitleStrategic Program Area(s)YearStation
Photo of The cloud-immersed forest of the Luquillo Mountains in eastern Puerto Rico
ID: 1478
A 42 year inference of cloud base height trends in the Luquillo Mountains of northeastern Puerto Rico

Cloud base altitude has been found to be increasing in the late rainfall season at the Luquillo Mountains

Principal Investigator : Grizelle Gonzalez

Wildlife and Fish
Water, Air, and Soil
2018IITF
Photo of Trimmed and intact plots in El Yunque National Forest. Forest Service
ID: 196
A Canopy Trimming Experiment in Puerto Rico: the response of litter invertebrate communities to canopy loss and debris deposition in a tropical forest subject to hurricanes

Insects and other invertebrates in leaf litter are important components in decomposition, nutrient cycling, and food webs. As part of larger stu ...

Principal Investigator : Grizelle Gonzalez

Water, Air, and Soil
Inventory and Monitoring
2010IITF
Photo of Block and plot structure in El Verde research area.  Inferred area covered by each block is 40,000 m2 and the complete study area covers around 106 m2.  Forest Service
ID: 16
Assessing Litterfall Trap Bias

Are traps preferentially representing certain kinds of leaf litter

Principal Investigator : Grizelle Gonzalez

Resource Management and Use
Water, Air, and Soil
Inventory and Monitoring
2012IITF
Photo of Fire prone dry forest and grassland ecosystems may expand in area as climate is projected to become warmer and drier
ID: 1486
Climate space for fire occurrence and extent in Puerto Rico

The cumulative effect of small frequent fires found in the Caribbean can shape large landscapes. Relationships between weather patterns and the ...

Principal Investigator : Grizelle Gonzalez

Wildland Fire and Fuels
Inventory and Monitoring
Resource Management and Use
Water, Air, and Soil
2018IITF
Photo of Book cover
ID: 458
Ecological Gradient Analyses in Tropical Ecosystems

Forest Service scientists recently published a book that contains a comprehensive analysis of ecological gradients in the Luquillo Mountains of ...

Principal Investigator : Grizelle Gonzalez

Inventory and Monitoring
Water, Air, and Soil
Resource Management and Use
2013IITF
Photo of Mites (Acari) are an important component of the litter invertebrate community in tropical forests in Puerto Rico
ID: 1461
Ecology of soil arthropod fauna in tropical forests: A review of studies from Puerto Rico

A significant number of ecological investigations have focused on the characterization of the edaphic fauna, and how they influence ecosystem pr ...

Principal Investigator : Grizelle Gonzalez

Water, Air, and Soil
Wildlife and Fish
2018IITF
Photo of Photo of copies of the atlas
ID: 1491
El Yunque National Forest Atlas release

Publication of an atlas about El Yunque National Forest, a collaboration between the International Institute of Tropical Forestry and El Yunque ...

Principal Investigator : Grizelle Gonzalez

Resource Management and Use
Outdoor Recreation
Inventory and Monitoring
Wildlife and Fish
Water, Air, and Soil
2018IITF
Photo of Regional groupings of tropical montane cloud forest and associated lower and upper altitudinal limits of the cloud belt (modified after Scatena 2010). U.S. Department of Agriculture Forest Service.
ID: 1158
Geographic, Environmental, and Biotic Sources of Variation in the Nutrient Relations of Tropical Montane Forests

Incorporating other geographic, environmental and biotic variables in tropical montane forests biogeochemistry, might give scientists a more acc ...

Principal Investigator : Grizelle Gonzalez

Inventory and Monitoring
Resource Management and Use
Water, Air, and Soil
2016IITF
Photo of The arctic field ecology youth-elder-science camp observing microscopic soil invertebrates. Forest Service
ID: 325
Integrating Research, Education, and Traditional Knowledge in Ecology

Integrating research and education is a fundamental goal of research institutions and agencies but specific approaches not widely published in e ...

Principal Investigator : Grizelle Gonzalez

Resource Management and Use
Water, Air, and Soil
Inventory and Monitoring
2011IITF
Photo of Figure 1. (A) The study sites were located in the Luquillo Experimental Forest in northeastern Puerto Rico; (B) Logs of two species and two stages of decomposition were selected (20 logs total) and paired soil and core samples were collected and; (C) PRS-probes (Plant Root Simulator) (ion exchange membranes) were collected from underneath and 50 cm away from the logs. U.S. Department of Agriculture Forest Service.
ID: 1152
Physical, Chemical, and Biological Properties of Soil Under Decaying Wood in a Tropical Wet Forest in Puerto Rico

Decaying wood is related to nutrient cycling through its role as either a sink or source of nutrients; however, at micro scales, what is the eff ...

Principal Investigator : Grizelle Gonzalez

Inventory and Monitoring
Resource Management and Use
Water, Air, and Soil
2016IITF
Photo of A simulated forest canopy opening in the Luquillo Experimental Forest to mimic hurricane disturbance and investigate changes in microclimate, biota, and ecosystem processes. Aaron B. Shiels, National Wildlife Research Center; USDA Animal and Plant Health Inspection Service
ID: 800
Post-hurricane Canopy Openings Influence Ecosystem Processes in a Tropical Rainforest

Forest Service researchers collaborated with external scientists to examine the effects of hurricane disturbance on tropical forest ecosystems. ...

Principal Investigator : Grizelle Gonzalez

Resource Management and Use
Inventory and Monitoring
Invasive Species
Water, Air, and Soil
Wildland Fire and Fuels
2015IITF
Photo of Bromeliads in full swing in Palo Colorado, El Yunque National ForestChanges in bromeliad invertebrate communities over time. Predicted means with 95% confidence intervals (for details see [6]). (A) Species richness; (B) Animal abundance; (C) Gamma diversity. See [7].  NR = no replication for this data point; TAB = Tabonuco;  PC = Palo colorado;  DF = Elfin forest.
ID: 1463
Responses of Two Litter-Based Invertebrate Communities to Changes in Canopy Cover in a Forest Subject to Hurricanes

Changes in canopy cover due to hurricane impact play an important role in determining litter invertebrate community

Principal Investigator : Grizelle Gonzalez

Water, Air, and Soil
Wildlife and Fish
2018IITF
Photo of Forest floor litter and duff measurements for eight forest types along elevation gradient in northeastern Puerto Rico. Asterisks indicate significant difference between litter and duff biomass within forest type. Grizelle Gonz�lez, USDA Forest Service
ID: 457
Scientists Characterize Woody Debris to Assess Fuel Loads in Northeastern Puerto Rico

Forest Service scientists characterized the amounts of woody debris (coarse woody debris, fine woody debris, duff, and litter) for eight differe ...

Principal Investigator : Grizelle Gonzalez

Inventory and Monitoring
Water, Air, and Soil
Wildland Fire and Fuels
2013IITF
Photo of Millipedes used in the microcosms were all from the Order Stemmiulida, Family Stemmiulidae. Forest Service
ID: 19
The Role of Millipedes in Tropical Ecosystems

The direct and indirect effects on litter of varying lignin content

Principal Investigator : Grizelle Gonzalez

Water, Air, and Soil2012IITF