Tree species distribution along the environmental gradients in Pananjung Pangandaran Nature Reserve, West Java

Abstract. Cahyanto T, Efendi M, Ramdan DM. 2020. Structure and composition of trees in Mount Tilu Nature Reserve, West Java, Indonesia. Biodiversitas 21: 2674-2680. An understanding of the structure and composition of stands in a conservation area is needed to support sustainable management strategy. However, this information in the Mount Tilu Nature Reserve, Bandung District, West Java area is still lacking. This research was aimed to analyze the structure and composition of tree species in the block of Malagembol forest, Mt. Tilu NR. Data collection was carried out through vegetation analysis using sampling plot method with size of 10x100 m2 at three-level altitudes of 1530 m, 1745 m, and 1950 m asl. Observation parameters included species names, number of individuals, and diameter at breast height (dbh). Data were analyzed to determine the floristic composition, species structure based on their diameter class, relative basal area, diversity indices, and analysis of the importance of the main components of trees species through Principal Component Analysis (PCA). A total of 32 tree species from 23 families was found in the observation plots which was dominated by Fagaceae, Lauraceae, and Myrtaceae families. Some pioneer plants covered the gap in vegetation due to minor disturbance and residual damage in the past. Nonetheless, the dominance of stands with small diameters indicated good regeneration status following such disturbance. Based on these findings, we recommend protecting the vegetation in Mt. Tilu NR by limiting community activities that can disturb the forest.

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Do species distribution models explain spatial structure within tree species ranges?

Global Ecology and Biogeography ◽

10.1111/j.1466-8238.2009.00478.x ◽

2009 ◽

Vol 18 (6) ◽

pp. 662-673 ◽

Cited By ~ 21

Author(s):

Daniel Montoya ◽

Drew W. Purves ◽

Itziar R. Urbieta ◽

Miguel A. Zavala

Keyword(s):

Spatial Structure ◽

Species Distribution ◽

Tree Species ◽

Species Distribution Models ◽

Distribution Models ◽

Species Ranges

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When Density Matters: The Spatial Balance between Early and Latewood

Forests ◽

10.3390/f12070818 ◽

2021 ◽

Vol 12 (7) ◽

pp. 818

Author(s):

Maria Royo-Navascues ◽

Edurne Martinez del Castillo ◽

Roberto Serrano-Notivoli ◽

Ernesto Tejedor ◽

Klemen Novak ◽

...

Keyword(s):

Species Distribution ◽

Pinus Halepensis ◽

Environmental Gradients ◽

Temporal Variations ◽

Western Mediterranean ◽

Climatic Conditions ◽

Growth Patterns ◽

Distribution Area ◽

Mediterranean Forests ◽

Climatic Influence

Understanding the influence of the current climate on the distribution, composition, and carbon storage capacity of Mediterranean tree species is key to determining future pathways under a warmer and drier climate scenario. Here, we evaluated the influence of biotic and environmental factors on earlywood (EW) and latewood (LW) growth in Aleppo pine (Pinus halepensis Mill.). Our investigation was based on a dense dendrochronological network (71 sites), which covered the entire distribution area of the species in the Iberian Peninsula (around 119.652 km2), and a high-resolution climate dataset of the Western Mediterranean area. We used generalized linear-mixed models to determine the spatial and temporal variations of EW and LW across the species distribution. Our results showed an intense but differentiated climatic influence on both EW and LW growth components. The climatic influence explained significant variations across the environmental gradients in the study area, which suggested an important adaptation through phenotypic plasticity and local adaptation to varying climatic conditions. In addition, we detected a clear spatial trade-off between efficiency and safety strategy in the growth patterns across the species distribution. Additionally, in more productive areas, the trees presented a higher proportion of EW (more efficient to water transport), while, in more xeric conditions, the LW proportion increased (more safety to avoid embolisms), implying an adaptation to more frequent drought episodes and a higher capacity of carbon depletion. We therefore concluded that Mediterranean forests adapted to dryer conditions might be more efficient as carbon reservoirs than forests growing in wetter areas. Finally, we advocated for the need to consider wood density (EW/LW proportion) when modeling current and future forest carbon sequestrations.

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Floristic Relationships of Seasonally Dry Forests of Eastern South America Based on Tree Species Distribution Patterns

Neotropical Savannas and Seasonally Dry Forests - Systematics Association Special Volumes ◽

10.1201/9781420004496.ch7 ◽

2006 ◽

pp. 159-192 ◽

Cited By ~ 1

Author(s):

Maria Jesus Nogueira Rodal ◽

João AndréJarenkow ◽

Ary Oliveira-Filho

Keyword(s):

South America ◽

Species Distribution ◽

Tree Species ◽

Distribution Patterns ◽

Dry Forests ◽

Seasonally Dry

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Forest vegetation in western Romania in relation to climate variables: Does community composition reflect modelled tree species distribution?

Annals of Forest Research ◽

10.15287/afr.2016.692 ◽

2016 ◽

Vol 59 (2) ◽

Cited By ~ 1

Author(s):

Steffi Heinrichs ◽

Helge Walentowski ◽

Erwin Bergmeier ◽

Karl Heinz Mellert ◽

Adrian Indreica ◽

...

Keyword(s):

Community Composition ◽

Species Distribution ◽

Tree Species ◽

Forest Vegetation ◽

Climate Variables ◽

Western Romania

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Rafflesia patma Blume in Pananjung Pangandaran Nature Reserve, West Java: Population Structure, Distribution Patterns, and Environmental Influences

Journal of Tropical Biodiversity and Biotechnology ◽

10.22146/jtbb.64800 ◽

2021 ◽

Vol 6 (3) ◽

pp. 64800

Author(s):

Bahana Aditya Adnan ◽

Suwarno Hadisusanto ◽

Purnomo Purnomo

Keyword(s):

Population Structure ◽

Nature Reserve ◽

Principal Component ◽

Sampling Technique ◽

Distribution Patterns ◽

Survey Method ◽

Endemic Plant ◽

West Java ◽

Research Areas ◽

Morisita Index

Rafflesia patma is an endemic plant of Pangandaran, West Java which is protected because of its rare status. The purpose of this research is to study the population structure, distribution patterns, and the effect of the physical environment of abundance R. patma in Pananjung Pangandaran Nature Reserve, West Java. The method used in this research was a survey method with a purposive sampling technique. Sampling was conducted using quadrat plots. The population pattern distribution was defined by a standardized Morisita index, and the analysis of abiotic environmental factors was determined by Principal Component Analysis (PCA) using PAST3. The results showed that there were 114 R. patma individuals scattered in several research areas in Pananjung Pangandaran Nature Reserve, they were Gua Parat (3 individuals), Cilegon (13 individuals), Pasir Putih (12 individuals), Badeto (48 individuals), and Curug Leutik (38 individuals). The distribution pattern of R. patma in Pananjung Pangandaran Nature Reserve was clustered with the Morisita index value (Id) > 1. Based on the PCA analysis, results that support the classification of the cluster analysis were obtained. Based on four abiotic environmental conditions analyzed, the most dominant character in influencing the distribution patterns and population structure of R. patma is light intensity.

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