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Lugo, Ariel E.

doi:10.1023/a:1021419815480

Cited by 44 publications

(8 citation statements)

References 77 publications

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“…As in previous work (Helmer et al 2008), our results indicate that reforestation is more likely to occur in steeper slopes and at higher elevations, which is often attributed to relatively poor soil quality for agriculture (Chinea 2002), low accessibility (Thomlinson et al 1996), and wetter climates (Rudel et al 2000;Lugo 2002). In addition, the positive effect of aspect can be the result of moisture-bearing trade winds arriving from the north-east that release the moisture on north facing slopes (Rudel et al 2000;Daly et al 2003).…”

Section: Discussionsupporting

confidence: 81%

“…In Puerto Rico, Thomlinson et al (1996) found that forest recovery in the Luquillo municipality was greatest within 100 m of extant forest patches and decreased at further distances. Lugo (2002) reported much the same trend, whereby small remnant forest patches accelerated reforestation and reduced fragmentation. In addition to the degree of forest cover in the area, proximity to commonwealth reserves had additional beneficial effects on forest recovery.…”

Section: Discussionmentioning

confidence: 69%

“…2). This pattern appears to be the result of urban development near roads possibly as a result of increased accessibility (Lugo 2002), flatter slopes, and proximity to extant urban areas (Lopez et al 4y Springer 2001;Helmer 2004). Puerto Rico has the greatest road density among all of the Caribbean islands.…”

Section: Discussionmentioning

confidence: 99%

“…To account for these regional land cover effects, we calculated the percent of urban, forest, pasture, and coffee cover within a 100 m radius in the 1991 land cover map (2) Socioeconomic variables 2.1 Distance to nearest roads. Proximity to roads may deter forest recovery because areas with easy access to good roads are more likely to undergo development (Lugo 2002;Pfaff et al 2007). Four road types were considered in the analysis: highways, primary, secondary, and tertiary roads.…”

Section: Potential Driversmentioning

confidence: 99%

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Forest recovery in a tropical landscape: what is the relative importance of biophysical, socioeconomic, and landscape variables?

et al. 2009

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Socioeconomic changes in many areas in the tropics have led to increasing urbanization, abandonment of agriculture, and forest re-growth. Although these patterns are well documented, few studies have examined the drivers leading to landscape-level forest recovery and the resulting spatial structure of secondary forests. Land cover transitions from agricultural lands to secondary forest in the island of Puerto Rico have been ongoing since the 1940s. This study is a glimpse into this landscape level trend from 1991 to 2000. First, we relied on Landsat images to characterize changes in the landscape structure for forest, urban, and agricultural land classes. We found that although forest cover has increased in this period, forest has become increasingly fragmented while the area of urban cover has spread faster and become more clustered. Second, we used logistic regression to assess the relationship between the transition to forest and 21 biophysical, socioeconomic, and landscape variables. We found that the percentage of forest cover within a 100 m radius of a point, distance to primary roads and nature reserves, slope, and aspect are the most important predictors of forest recovery. The resulting model predicts the spatial pattern of forest recovery with

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Section: Discussionsupporting

confidence: 81%

Section: Discussionmentioning

confidence: 69%

Section: Discussionmentioning

confidence: 99%

Section: Potential Driversmentioning

confidence: 99%

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Forest recovery in a tropical landscape: what is the relative importance of biophysical, socioeconomic, and landscape variables?

et al. 2009

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“…The landscape of Puerto Rico, like Anthropocene landscapes everywhere, is dynamic and in constant change as a result of human activity [39]. Nevertheless, long-term processes such as the forest transition from a deforested to a forested landscape exert their influence on the age (young) of forests and the particular successional stage in which they find themselves.…”

Section: Implications Of Novelty To Functioning and Conservation Of Dmentioning

confidence: 99%

Novelty and Its Ecological Implications to Dry Forest Functioning and Conservation

Lugo

Erickson

2017

Forests

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Tropical and subtropical dry forest life zones support forests with lower stature and species richness than do tropical and subtropical life zones with greater water availability. The number of naturalized species that can thrive and mix with native species to form novel forests in dry forest conditions in Puerto Rico and the US Virgin Islands is lower than in other insular life zones. These novel dry forests are young (<60 years) with low structural development, high species dominance, and variable species density. Species density is low during initial establishment and increases with age. At the 1-ha scale, novel forests can have greater species density than mature native forests. Species groups, such as nitrogen-fixing species, and other naturalized species that dominate novel dry forests, have a disproportional influence on forest element stoichiometry. Novel dry forests, compared to the mean of all forest species assemblages island-wide, tend to have fallen leaf litter with lower than average manganese and sodium concentrations and lower than average C/N and C/P ratios. After accounting for significant differences in stand age, geology, and or precipitation, novel dry forests compared to native dry forests have higher C anomalies, lower Ca and Na anomalies, and lower C/N ratio anomalies. Taken together, these characteristics may influence litter decomposition rates and the species composition, diversity, and food web dynamics in litter and soil. Novel dry forests also contribute to the conservation of native plant species on highly degraded lands.

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Case Study: Geographic Distribution and Level of Novelty of Puerto Rican Forests

et al. 2013

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Untitled

Cited by 44 publications

References 77 publications

Forest recovery in a tropical landscape: what is the relative importance of biophysical, socioeconomic, and landscape variables?

Forest recovery in a tropical landscape: what is the relative importance of biophysical, socioeconomic, and landscape variables?

Novelty and Its Ecological Implications to Dry Forest Functioning and Conservation

Case Study: Geographic Distribution and Level of Novelty of Puerto Rican Forests

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