Bogor Botanic Gardens Research Articles

Bogor Botanic Gardens as a nature-based solution for mitigating urban heat island and microclimate regulation

This paper explores the role of Bogor Botanic Gardens (BBG) as a form of Nature-Based Solution (NBS) to mitigate Urban Heat Islands (UHI). Time series analysis of LANDSAT 8 OLI thermal band and Normalized Difference Vegetation Index (NDVI) was done from 2013 to 2020 using Google Earth Engine. Land Surface Temperature (LST) from Bogor and BBG were calculated, compared, and annual UHI areas were derived. The relationship of LST and NDVI were also explored annually to describe the effect of vegetation towards LST with linear regression. Overall, Bogor experiences a decrease of mean LST from 30.67°C and a maximum of 39.14°C in 2013 to 27.07°C and a maximum of 34.35°C in 2020. However, the inside of BBG is cooler with temperature ranging from 28.41°C and a maximum of 35.62°C in 2013 to 24.25°C and a maximum of 29.41°C in 2020. This is an effect of vegetation inside the BBG that regulate microclimate in its surrounding. It can be seen in the negative correlation between NDVI and LST observed with r2 ranging from 0.27 to 0.82. While UHI areas tended to increase from 8220 ha in 2013 to 8926 ha in 2020, BBG consistently acts as an urban cool island in the middle of UHI. Therefore, heat mitigation is proven to be one of the environmental services provided by BBG.

Is leaning trees of Vatica pauciflora (Korth.) Blume related to their crown architecture?

Vatica pauciflora (Korth.) Blume (Dipterocarpaceae) or locally known as resak rawa is an important tree. It is categorized as vulnerable regarding the IUCN (International Union for Conservation of Nature) Red List of Threatened Species. We can find the resak rawa tree collection in the Bogor Botanic Gardens, which serves as a place for research and tourism. Due to the diversity in individual tree anatomy within species, understanding correlation among individual tree traits, particularly crown architecture and tree leaning, is of great interest. That will be important because the leaning trees and crown architecture will affect the risk level to the safety of visitors. We can also use the architecture of the tree crown to understand the factors that influence tree growth. This study aims to investigate the correlation between the leaning trees and the crown architecture of V. pauciflora. Eight heritage trees of the species in the Bogor Botanic Gardens at the age of 54–105 years old were purposely, sampled in this study. The variables observed were height, trunk and crown diameter, leaning tree, live crown ratio, and direction of the main branches. The results show that crown shapes will follow the leaning trees with a correlation of 0.97. The main branches will be longer in the direction of the leaning trees (y=0.9956x+11.312; R²=0.9431). Suggestions to the management of V. pauciflora are to provide information boards to visitors and pruning the crown in the direction of the leaning trees is needed. The findings could be used to formulate mitigation measures as to the risk and safety of visitors.

Coarse root distribution of Vatica pauciflora (Korth.) Blume in different soil slopes as revealed by root detector

Tree roots have an essential role in absorbing water and nutrients from the soil and supporting tree stability. As an anchor for the tree, the environment can significantly affect root structure but it is rarely investigated due to below ground distribution. The study was aimed to determine the distribution of coarse roots of Vatica trees (Vatica pauciflora) which grows in different soil slopes. Six mature Vatica trees at Bogor Botanical Garden were selected in this study. Root detector as the main tool based on acoustic method was used to evaluate the root distribution. Analysis photogrammetry was carried out to complement the root detector results. The results found that the root detector only can evaluate the radial distribution of coarse root, while root distribution on downward soil cannot be detected. The condition of the site with different slope categories (e.g., flat to steep) affected root distribution patterns. A study on root distribution was useful to assist the evaluation of tree stability and to support arboriculture study.

Controlling invasive alien species Vachellia nilotica with triclopyr herbicide in Baluran National Park

Vachellia nilotica (Acacia nilotica), as an invasive alien species (IAS), was introduced to Baluran National Park from the Bogor Botanical Gardens in 1969. The purpose was for firebreak to prevent jumping fires from the savanna to the teak forests plantation. However, unexpectedly V. nilotica growth was uncontrollable and invaded the 6000 ha savanna. The rapid growth of this weed has killed the grass in the savanna leading to a decline in the Banteng population in Baluran National Park from 325 in 1998 to 22 in 2011. Since the 1980s, researche on V. nilotica control has been carried out by various universities and research institutions in Indonesia but has not yet obtained an effective and efficient control method. The study aimed to investigate the efficacy of herbicide with the active ingredient of triclopyr by stump brushing to control V. nilotica. Ten triclopyr herbicide concentrations with a solution of diesel and water were tested. The results showed that 1% triclopyr concentration in diesel oil could control 100% of V. nilotica weeds, while water solutions could only control 50% of V. nilotica weeds.

The appearance of DNA bands pattern based on the result of primary selection of RAPD orchid Phaius spp.

This study aimed to examine the appearance of the DNA band pattern resulted from the selection of RAPD primers on Phaius spp. namely Phaius tankervillae, Phaius montanus, Phaius collasus and Phaius amboinensis. The research material was performed in the Center for Plant Conservation of the LIPI Bogor Botanical Gardens. Molecular analysis was carried out at the Laboratory of the Center for Horticultural and Tropical Studies IPB using RAPD. The study showed that the 2 primers RAPD OPA 02 and OPA 16 can be used for DNA amplification of orchids Phaius spp (Phaius tankervillae, Phaius montanus Phaius collasus and Phaius amboinensis) because they produce clear DNA bands. The result of PCR amplification on Phaius tankervillae, Phaius montanus, Phaius collasus, and Phaius amboinensis using OPA 02 and OPA 16 primers produced 11 and 9 DNA bands, respectively, with an average of 5 DNA bands per primer. In the band pattern at 800 bp on OPA 02 primers resulting sharp and clear band pattern quality.

Tree Health Assessment of Lauraceae Collections in Bogor Botanic Gardens using Forest Health Monitoring Method

Bogor Botanic Gardens (BBG) is an ex-situ plant conservation area with thousands of plant collections. The trees of the Lauraceae in BBG experienced the highest number of deaths among other families. However most of them were categorized as young planting years (0-15 years). A tree health monitoring in the Lauraceae needs to be conducted to provide an overview, trend, and value of the level of damage. Forest Health Monitoring (FHM) method was carried out on two plots consisting of 149 trees. FHM can identify the types and levels of damage through monitoring and recording a series of tree damage. The results showed that among 149 trees, with 103 healthy, 9 lightly damaged, 10 moderately damaged, 15 heavily damaged, and 12 dead. The damage was primarily found in the stem (63 trees), the crown branch (51 trees), and the roots (13 trees). The severity of the damage was mainly at a mild level (0-19%). The cause of the damage is discussed. Further observations and frequent monitoring of the health of the Lauraceae need to be conducted by management to reduce the number of dead collections of the family. Keywords: botanic gardens, Forest Health Monitoring, lauraceae, tree health

Preferensi Kenyamanan Pengunjung di Kebun Raya Bogor selama Adaptasi Kebiasaan Baru Berbasis Big Data

<p><em>Urban communities need urban forests </em><em>in improving</em><em> the quality of </em><em>mental </em><em> and physical health during the New Normal. If </em><em>eco</em><em>tourism or urban forest is a top priority in implementing the New Normal, managers </em><em>must </em><em>determine designs, </em><em>and make </em><em>procedures related to the applicable COVID-19 protocol. The research objective was to measure the comfort level of visitors before and during the pandemic using big data, then compile comfort design recommendations according to visitor preferences during the pandemic based on survey methods. </em><em>Social media Twitter and Google Map Review mentioning the Bogor Botanical Garden were collected a year before and six months during the pandemic. Analysis of text mining is carried out in order to obtain sentiment and initial perceptions about the Bogor Botanical Garden. Initial perceptions of visitors were used to construct the survey questionnaire. Furthermore, quantitative survey methods were used to analyze visitor activity and comfort. </em><em>Visitor comfort is limited to abiotic factors, namely accessibility, and facilities. Sentiment analysis shows pre-pandemic conditions had 48.26% more positive word frequency than during the pandemic for Twitter, but 23.29% less than during the pandemic for Google Map Review. Twitter are more sensitive to the current situation than Google Map Review. Positive perceptions of comfort include compliance management of KRB under the COVID-19 protocol (11.7%), better management (10.8%), well-maintained facilities and infrastructure (7.2%), and maintained hygiene (7.2%). Comfort design recommendations based on respondents' preferences for comfort (14.4%) include increasing the number of toilets, the number of rest areas, ramps for the elderly, areas and attractions to attract children, parks with new themes, and sustainability elements.</em></p>

PLANT COLLECTION IN BOGOR BOTANICAL GARDEN AS A SOURCE OF FUNCTIONAL FOOD

Plant collection in Bogor Botanical Garden (BBG) has various potentials, one of which is as a food source. However, not all food produced from plants can be claimed as functional foods. This study analyses the potential of plants kept in the collections of BBG as functional foods and medicine sources with nutritional and health values. Literature studies have been carried out related to nutrition value and active substances owned by these plants, while data related to health claim was based on the results of ethnobotany studies, especially the use of medicinal plants by 28 ethnics in Indonesia. The results suggest 168 species of the BBG collection which can be claimed as a source of functional food which can be categorized into seven main categories. Among these plants are species classified as threatened or endangered such as Mangifera casturi, Vanilla planifolia, Pterocarpus indicus, Borassus flabellifer, Cycas rumphii, Dillenia philippinensis, and Litchi chinensis. 
 Key words: BBG, functional food, threatened species

Begonia ’Crested‘: A new variety of Begonia from interspecific hybridization of Begonia sudjanae C.A Janson × Begonia puspitae Ardi

Improvement of leaf shape characters in Begonia can be done through hybridization between two different species of Begonia. This study aims to produce a new variety of Begonia to better improve the quantitative, qualitative characters and increase its genetic diversity. The study was conducted in the green house of Bogor Botanic Gardens. Two native species of Indonesia, Begonia sudjanae C.A Janson as the female parent and Begonia puspitae Ardi as the male parent. The mature F1 seeds were sown and selections were made among the plants produced. Observation results the characteristics of the new variety Begonia Crested as follows: stem type rhizomatous, leaves simple, ovate, peltate with strongly undulate base. Leaves margin is crenate and apex is acuminate. Colour on the upper surface are yellow green group RHS Colour Chart: (YG 144 A) strong yellow green, colour of veins on upper side is (YG 144 D) light yellow green. Inflorescence peduncle with 20 cm long branched symmetrically. The name Begonia Crested as the selected F1 plants are propagated in a vegetative method with leaves cutting, registered on the Center of Plant Variety Protection (PPVTPP) by No. 846/PVHP/2020. This new variety is beautiful and exotic leaves ornamental Begonia which will be developed as commercials ornamental plants.

Seedling Functional Types and Cotyledons Shape Some Species of Woody Plant

ABSTRACT
 Woody plant produce small to large seeds which can affect germination process. Cotyledons as an important food source for early growth of seedlings. The position, function, and type of cotyledons when seeds germinate varies. This research aimed to determine cotyledons characters of woody plant seedlings collection in Bogor Botanic Gardens. The position, function and type of cotyledons were observed for 65 species of seedlings.This research used an observative method and was analyzed descriptively.The position of cotyledons when the seeds germinate are epigeal (above the ground) and hypogeal (remain in the soil). The epigeal cotyledons type found in 44 species that is higher than hypogeal cotyledons type (21 species). The function of cotyledons for seedlings is to reserve food or photosynthesis. Species with cotyledon reserve type were more than foliar cotyledons type (43 species and 22 species, respectively). The proportion of seedling types CER (cryptocotylar-epigeal-reservoir), CHR (cryptocotylar-hypogeal-reservoir), PEF (phanerocotylar-epigeal-foliaceous), PER (phanerocotylar-epigeal-reservoir), PHR (phanerocotylar-hypogeal-reservoir) were 3.08%, 16.92%, 33,85%, 29,23%, 16,92%, respectively.

Urban landscape for birdwatching activities

Urban landscapes are usually dominated by built spaces and human-made vegetation, which different from natural landscapes. This difference will affect the composition of birds that can be found in the urban landscape. For birdwatchers, birds are the main object in birdwatching activities. The objectives of this paper were to analyze the feasibility of urban landscapes for birdwatching activities and find out the characteristics of urban landscapes favored by birdwatchers in four cities in Java (Bogor, Sukabumi, Bandung, and Surabaya). Birdwatchers’ site preference and perception were surveyed through online questionnaires in February through May 2020 (n=1,247 respondents). Surveyed data revealed that birdwatching sites’ size varied between 0.05 and 76.82 ha, mainly urban forests and city parks. Most of the urban landscape was habitat to various bird species typical of the urban landscape (e.g., Eurasian tree-sparrow, Cave swiftlet, Black-headed Bulbul). Raptors (e.g., Black-thighed Falconet) are found in several locations. Among the respondents, 25 % (n=309) had previously conducted birdwatching activities in urban landscapes, while 72.0% (n=808) expressed their interest in birdwatching in urban landscapes, indicating that urban landscapes was feasible for birdwatching. The most favorite locations were the Bogor Botanical Gardens, Darmaga Research Forest (both in Bogor), Merdeka Field Park, Cikundul Agrotourism Area (Sukabumi), Bandung Zoo, Babakan Siliwangi City Forest (Bandung), Bungkul Park, and Flora Park (Surabaya). Characteristics of sites favored by birdwatchers were a shady area, not noisy location, and any facilities for birdwatching. The diversity of bird species did not became the main reason.

Molecular phylogenetics of Malesian Diospyros (Ebenaceae) based trnL-F spacer sequences

Abstract. Wanda IF, Djuita NR, Chikmawati T. 2021. Molecular phylogenetics of Malesian Diospyros (Ebenaceae) based trnL-F spacer sequences. Biodiversitas 22: 4106-4114. Diospyros is a genus composed of potential species as an economic commodity with high diversity. However, there is limited information on the phylogenetic relationship of this genus in the Malesian region. This study aimed to provide information on the species diversity through a DNA barcoding approach and revealing the phylogenetic information of Diospyros spp. in the Malesian region. This study used 20 Diospyros accessions from Bogor Botanical Garden collections, 40 Diospyros accessions, and four outgroup accessions obtained from the NCBI database. The DNA barcoding primer utilized comes from plastids, trnL-F intergenic spacer. The phylogenetic trees were constructed using the Maximum-Parsimony method. A total of 20 accessions of Diospyros were validated with sequence data on the genebank. The result showed that all accessions had relationships with 44 other Diospyros species globally. Here, we reported 10 new trnL-F intergenic spacer sequences of Malesian Diospyros species. A phylogenetic tree grouped 64 monophyletic Diospyros species into seven clades. The phylogenetic results supports the biogeographic hypothesis: the Malesian region, the Malesian-Caledonian Region, and Cosmopolite species in almost all bioregions.

Analysis Visitor Satisfaction Level of Outdoor Recreation in Bogor Botanical Gardens

Bogor Botanical Gardens is a conservation area that has long been used by the wider community as a tourist attraction and has become one of the most popular tourist destinations because it presents a panoramic view of natural landscape architecture. This research was conducted to find out how Outdoor Recreation in Bogor Botanical Gardens can provide tourist satisfaction and how the influence of Outdoor Recreation on tourist satisfaction. The purpose of this study is to analyze Outdoor Recreation in the level of tourist satisfaction, and how much influence Outdoor Recreation has on tourist satisfaction. The research method used is the Importance Performance Analysis (IPA) Method with the aim to provide an illustration and illustrate the gap between the interests and satisfaction of individual attributes both of which are easy to understand and understand well through these measurements. Quantitative methods, to obtain more comprehensive data, do valid and reliable testing. The results of the merging of the performance of Bogor Botanical Gardens (performance) and the level of tourist expectations (Importance). divided into 4 quadrants as an indicator of overall tourist satisfaction through 100 respondents. The determination of the position of the 11 research attributes is determined based on the average value of both the level of importance and performance. Determination of the X (performance) of 3.62 and Y (Importance) of 3.63, obtained from the total average of all 11 average values for both the performance of the Bogor Botanical Garden (performance) and the level of tourist expectations (Importance).Through this research phase, it is expected that there will be an increase in tourist facilities by the Bogor Botanical Gardens, so that it can provide satisfaction in accordance with the expectations of tourists during the tour and create sustainable tourism in every tourist attraction in the Botanical Gardens

The Role of Environmental Management on Visitor Satisfaction of Bogor Botanical Gardens

The purpose of this research is to find out how the implications of environmental management on the satisfaction of visitors in the Bogor Botanical Gardens. The research was conducted at the Bogor Botanical Garden, Bogor City, West Java. The research was conducted using a quantitative method with a correlative approach. The purpose of correlative research is to know whether or not there is a relationship between two or more variables. Data retrieval using several methods such as field surveys, library research, and documentation. The conclusion of the research is, that the satisfaction felt by visitors after traveling to the Bogor Botanical Gardens is strongly influenced by the environmental management that is done well. The better management activities carried out in the Bogor Botanical Gardens will have a positive impact on visitor satisfaction. When the destination of visitors traveling to Bogor Botanical Gardens is fulfilled then the satisfaction of visitors will be fulfilled as well. High visitor satisfaction will give a positive image to the Bogor Botanical Gardens, this will be one of the benchmarks of the extent of success of the management to carry out the task charged. To achieve good visitor satisfaction, through this research it is known that the role of environmental management is very decisive.

DAMPAK LINGKUNGAN DAN SOSIAL TERHADAP MINAT WISATAWAN DI KEBUN RAYA BOGOR

The environment is a condition that affects the development and behavior of living things. Social itself is a way in which each individual has related to others. The interest of tourist are the source of motivation that encourages someone to do what they want. So it’s profitable then they will feel interested and bring their own satisfaction and if the satisfaction is reduced then the interest will decrease. For this reason, with the interest of tourist, there is a development of an object of attraction from tourism that is included in the category of tourist attraction. The results of research in the field show that the Bogor Botanical Gardens, which have been established since 1819, are the center for plant research and conservation. Over time, the Bogor Botanical Gardens issued 5 pillars namely Conservation, Education, Research, Nature Tourism and Environmental Services. From these pillars, it states that the Bogor

An addition to the alien flora of Java: the first record of adventive Costus dubius (Costaceae)

More than 6000 plant species, native and introduced, have been recorded in Java that includes the Costaceae family. In the last few years, several additions of alien Costus species have been published from Java. In 2019, a set of specimens of wild Costus sp. was collected from Institut Pertanian Bogor, Bogor, West Java Indonesia. This species is not similar to any previously recorded wild Costus in Java. Therefore, this research aims to identify the collected specimen and provide a taxonomic account for the species. The morphological description was made from the living plant and the collected herbarium. The description was used to identify the species, supported by field notes and photographs. The result showed that the recently collected specimen belongs to Costus dubius. Before this finding, the plant was only known in cultivation in the Bogor Botanical Garden. Therefore, this finding represents the first record of the adventive population of C. dubius in Java and increases the number of wild Costus in Java into seven species. Further researches on Costus in Java are suggested such as the ecological impact due to the presence of several non-native species.

Identification and assessment of invasive plant species at Bogor Botanic Gardens, Indonesia

Alien plant species were introduced to Indonesia for cultivation, experimental and curiosities, or a Botanic Garden’s collection. Those alien species could also be imported through plant propagules infecting imported agricultural products. The species could be useful or have a possibility as invasive. A Botanic Garden collects documented plant species for conservation, research, environmental education, ecotourism, and ecosystem services. Bogor Botanic Garden was established in 1817 and has many plant collections not only from Indonesia but also from many other countries of the world. This study aims to identify the invasive plants as a collection of Bogor BG, characterise, and assess the plants to reduce the risk. There were 69 invasive species with a total of 262 plants collected in the garden, with the habit form of climber, tree, shrub, herb, clump, fern and aquatic. The source of the invasive plants was only from outside Indonesia (19 species), only from Indonesia (36 species), or both sources (14 species). The native of the invasive species was Indonesia (26 species), out of Indonesia (37 species) or unknown (6 species). The characteristic of invasiveness of the plant species is very important as an input for further risk analysing of invasive plant of the garden and for managing the plants of Botanic Gardens in the future time.

Peran Faktor Pendorong Pada Keputusan Berkunjung Ke Kebun Raya Bogor

<p>Bogor Botanical Garden is one of the icons of the Bogor City. Bogor Botanical Garden is a tourist site that has a forest concept but is located in the center of Bogor City so that access to Bogor Botanical Garden is easily accessible. Bogor Botanical Gardens is located in Ir. H. Juanda number 13, Bogor, West Java, Indonesia. This study was conducted to determine the effect of the Motivation Driving Factor on the Decision to Visit in Bogor Botanical Garden.</p><p>This research uses quantitative research, with descriptive methods. Many of the samples studied were 100 respondents who had visited Bogor Botanical Gardens.</p><p>Based on the results of the study it was concluded that from the results of the hypothesis test (T-Test) conducted by the researcher produced a tcount of 10.463> Ttable 1.98447. This shows that there is a significant influence between the Motivating Factors for Visiting Decisions. The influence of motivating factors on the decision to visit Bogor Botanical Gardens with a strong correlation coefficient of 0.726 because it is between 0.600-0.799. The coefficient of determination or the percentage of influence of the Factors Driving Tourist Motivation (X) Decision to Visit (Y) is 52.8%. Meanwhile, the remaining 47.2% is influenced by other variables not examined in this research.</p>

Molecular Identification and Morphological Characterization of Ficus sp. (Moraceae) in Bogor Botanic Gardens

Ficus spp. belongs to the tribe Ficeae in the Moraceae family. Many members of this genus have been collected and grown in Bogor Botanic Gardens. There are 519 living collections of Ficus conserved since 1817, and 13 of them have not been identified until the species level. This research aimed to identify the Ficus sp. originated from Kaur Selatan (Bengkulu) using morphological and molecular approaches. Morphological characterization and herbarium specimen observation have been carried out to identify the Ficus sp. The molecular approach was conducted through DNA barcoding using ITS primer. The molecular identification using ITS sequence showed that Ficus sp. is Ficus crassiramea with 99.87% similarity to the sequence in NCBI. Morphological observation through herbarium specimen showed that there are 9 vegetative characters specific to Ficus crassiramea.

Improving visitor preferences through environmental management strategies in the urban forest during COVID-19

Urban forests are designed to meet community needs for green open spaces and recreational activities. Biotic and abiotic factors play a crucial role in urban forest management to support these communities’ needs. Bogor has more than one urban forest, including the Bogor Botanical Gardens and Cibodas Botanical Gardens. During the pandemic of COVID-19, the urban forests in Bogor continue to improve so that they are comfortable for visitors without leaving the concept of environmental sustainability. This study focuses on environmental management strategies in the Bogor Botanical Gardens regarding visitor preferences for abiotic factors. The research method is carried out through grounded theory with qualitative exploratory methods. The data collection was performed by distributing open-ended online questionnaires and non-random sampling techniques. The results of the questionnaire were analyzed using three stages. Five aspects of environments become visitors’ preference to the Bogor Botanical Gardens, namely atmosphere, research sounds and noise, facilities, and edges. The environmental management strategy is related to visitor preference aspects, namely the availability of rain and water harvesting facilities, composting and waste recycling areas, environmental thematic virtual tours, and placement of solar system-based lighting.