Structure and floristics of an old secondary rain forest in Central Kalimantan, Indonesia, and a comparison with adjacent primary forest

Brearley, Francis Q.; Prajadinata, Sukaesih; Kidd, Petra; Proctor, John; Suriantata,

doi:10.1016/j.foreco.2004.02.048

Cited by 124 publications

(87 citation statements)

References 44 publications

(46 reference statements)

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“…For instance, the highest flowering activity and Fournier intensity occurred, as expected, during the 2008-2009 wet season; however, the same did not occur in the previous wet season. Long-term studies have indicated that abnormal climate events are the main cause of different flowering patterns in certain years, for instance associated with the El Niño-Southern Oscillation dynamics [57][58][59][60]. In general, it is not possible to identify the probable reasons for phenological differences between years in short-term studies, unless a clear influencing factor has occurred atypically in the period of study [61].…”

Section: Reproductive Phenophasesmentioning

confidence: 99%

“…Episodes of high fruit production associated to El Niño events followed by low fruit production in years that follow occur widely across Neotropical forests, but there is no equivalent of the mass-fruit events at multiyear intervals seen in Asian forests [59]. Thus, a regular fruit supply with famines at multiyear intervals is the general pattern in Neotropical forests [59].…”

Section: Reproductive Phenophasesmentioning

confidence: 99%

“…Thus, a regular fruit supply with famines at multiyear intervals is the general pattern in Neotropical forests [59]. However, the low degree of flowering and fruiting activity and intensity seems to be a pattern for Atlantic Forest tree communities [29,60,67] that in combination with fragmentation may compromise forest dynamics, since forest edges have low densities of seedlings [36].…”

Section: Reproductive Phenophasesmentioning

confidence: 99%

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Tree Community Phenodynamics and Its Relationship with Climatic Conditions in a Lowland Tropical Rainforest

Pires

Marino

Silva

et al. 2018

Forests

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Abstract:The timing, duration, magnitude and synchronicity of plant life cycles are fundamental aspects of community dynamics and ecosystem functioning, and information on phenodynamics is essential for accurate vegetation classification and modeling. Here, we recorded the vegetative and reproductive phenodynamics of 479 individuals belonging to 182 tree species monthly over two years in a lowland Atlantic Forest in southeastern Brazil, and assessed the relationship between local climatic conditions and the occurrence and intensity of phenophases. We found a constant but low intensity of occurrence of both leaf fall and leaf flush with respect to canopy cover, resulting in an evergreen cover throughout the year. The timing of the reproductive phenophases was irregular between the two years of observation, and their amplitude was low. In addition, flowering and fruiting phenograms of activity, intensity and intensity corrected by the basal area did not overlap. These results suggest that a combination of phenological records and community-structure parameters allows for the obtainment of more accurate estimates of resource availability over time. We found that differences in growing degree-days (GDD), photoperiod and precipitation over time were related to temporal variation in leaf fall, leaf flush and flowering, with a large consistency in responses across tree species in this lowland Atlantic Forest. Moreover, there was only a weak relationship between climatic conditions and the dynamics of fruit formation and ripening, which were more strongly related to flowering phenodynamics, which is suggestive of indirect effects of climatic conditions on fruiting. Finally, the association we found between the number of days with precipitation and leaf fall dynamics agrees with the view that the greater potential for extreme events may impair plant growth in tropical forests. This reinforces the growing concerns regarding the risk of ecological collapse of tropical forests due to fragmentation and global climate change.

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Section: Reproductive Phenophasesmentioning

confidence: 99%

Section: Reproductive Phenophasesmentioning

confidence: 99%

Section: Reproductive Phenophasesmentioning

confidence: 99%

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Tree Community Phenodynamics and Its Relationship with Climatic Conditions in a Lowland Tropical Rainforest

Pires

Marino

Silva

et al. 2018

Forests

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“…In addition, large parts of the remaining forests have been disturbed and fragmented due to human activities (Giambelluca et al 2003;Van Laake and Sánchez-Azofeifa 2004). As a result of deforestation and fragmentation, the biological health and ecological structure of existing forests has become seriously degraded and species biodiversity has been reduced (Phillips 1997;Blasco et al 2000;Waldman and Shevah 2000). These processes threaten the remaining tropical forest ecosystems and the millions of people who depend on them for food, water, fuel, timber, and other resources (Bazzaz 1998).…”

Section: Introductionmentioning

confidence: 99%

Effects of population density on forest structure and species richness and diversity of trees in Kampong Thom Province, Cambodia

et al. 2008

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This study examined differences in stand structure, tree species richness, and tree species diversity in relation to population density in Kampong Thom Province, Cambodia. Tree data were obtained from a 1997 forest inventory involving 60 clusters (540 plots) systematically distributed over 30% of the provincial forest area. Spatially referenced population data were obtained from the 1998 national population census. The average number of trees per cluster was 356/ha, the average basal area, 23 m 2 /ha, the average stand volume, 217 m 3 /ha, and the average aboveground biomass, 273 Mg/ha for all trees of DBH 10 cm and larger. The average species richness per cluster was 37 species, while average species diversity was measured as 0.916 using Simpson's index and 2.98 by Shannon's index. Significant negative correlations were generally found between population density surrounding clusters and tree density, basal area, stand volume, aboveground biomass, and species richness and diversity for three examined diameter classes (DBH of 10-30, C30, and C10 cm). As the distance from clusters for calculating population density increased, the correlation levels increased up to 5 or 7 km, depending on the variables and diameter class, and then stayed relatively constant for stand structure variables and decreased for species richness and diversity. The results indicate that evidence of disturbance was more pronounced at higher population density up to around 5 to 7 km. We suggest that introduction of greater controls on human disturbance should be a high priority for resource management and conservation in Kampong Thom Province and, presumably, Cambodia as a whole.

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“…Whitmore (1998) reported that a typical tropical lowland evergreen rain forest usually has 25-45 m of canopy height and emergent trees to 60-80 m tall. In addition, Brearley et al (2004) reported the mean tree height of old secondary forest to be 19.0 m as compared to 22.1 in a primary forest at Barito Ulu, Central Kalimantan while Okuda et al (2003) also recorded mean canopy height of 27.4 m and 24.8 in a primary forest and regenerating forest at Pasoh Forest Reserve, Negeri Sembilan, Malaysia. The highest height obtained from our study plots at Plot NF (26.8 m) and Plot 1991 (20.5 m) is comparable to those means in an old secondary forest reported for 41-55 years old stand (Okuda et al, 2003;Brearley et al, 2004) with an overall low mean canopy height.…”

Section: Discussionmentioning

confidence: 99%

Forest Structure Assessment of a Rehabilitated Forest

Heng¹

2011

American Journal of Agricultural and Biological Sciences

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Problem statement: Forest structure assessment provides information on forest succession, dynamics, biodiversity and health which are important but only few information is available on rehabilitated forest. The objective of this study was to assess the forest structure of selected age stands at a rehabilitated forest situated in Universiti Putra Malaysia Bintulu Sarawak Campus, Sarawak, Malaysia. Approach: Four 20×20 m plots were established in stands planted in 1991, 1999, 2008 and an adjacent natural regenerating secondary forest (±22years) and all stands were measured for Diameter Breast Height (DBH) and height and identified. Results: Forest structural analysis showed better performance in the structural characteristics mainly the mean basal area (61%), mean Dbh (56%) and mean height (60%) of the trees as compared to the adjacent natural regenerating secondary forest. Conclusion: It can be concluded that after 18 years, rehabilitated forest using accelerating natural regeneration technique showed better structural dimension. This can help to promote the reforestation and restoration activities on degraded forest. Overall, rehabilitated forest areas have yet recovered in terms of size and height.

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Structure and floristics of an old secondary rain forest in Central Kalimantan, Indonesia, and a comparison with adjacent primary forest

Cited by 124 publications

References 44 publications

Tree Community Phenodynamics and Its Relationship with Climatic Conditions in a Lowland Tropical Rainforest

Tree Community Phenodynamics and Its Relationship with Climatic Conditions in a Lowland Tropical Rainforest

Effects of population density on forest structure and species richness and diversity of trees in Kampong Thom Province, Cambodia

Forest Structure Assessment of a Rehabilitated Forest

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