KELIMPAHAN, ASOSIASI DAN ANCAMAN HABITAT Nepenthes bicalcarata Hook.f. DI CAGAR ALAM MANDOR, KALIMANTAN BARAT

Sunardi, Sunardi; Mansur, Muhammad

doi:10.14203/bkr.v24i2.734

Cited by 5 publications

(9 citation statements)

References 20 publications

(23 reference statements)

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“…The upper pitcher of N. bicalcarata has a cylindrical shape and is slimmer than the lower one (Figure 2). The lower pitcher supports the upper pitcher in the climbing forest canopy and competes for light and flying arthropods in a forest (Sunardi and Mansur 2021). However, the lower pitcher was found to be more bulbous and bigger in volume (Figure 2).…”

Section: Composition and Biomass Of N Bicalcarata Preysmentioning

confidence: 80%

“…All these pitchers were used as the sample in this research. The unequal number of samples of the upper and lower pitcher was obtained from 15 individuals of N. bicalcarata, which referring to Sunardi and Mansur (2021) the plants had not reached an adult phase yet. The lower pitcher is usually formed earlier than the upper pitcher and when the upper pitcher is scrimping, it indicates that the plant is not mature enough.…”

Section: Nepenthes Bicalcarata In Kantuk Customary Forestmentioning

confidence: 99%

“…N. bicalcarata is a threatened species and has been listed as Vulnerable based on IUCN Red List since 2000 (IUCN 2022). This species grows in habitats with poor nutrients, such as peat-swamp forests and primary heath forests at an altitude of 0-950 m above sea level (Setiawan et al 2018;Sunardi and Mansur 2021). N. bicalcarata plants are usually found with other Nepenthes species, namely N. ampullaria, N. gracilis, N. mirabilis and N. rafflesiana, in which in a particular condition it will produce natural hybridization (Setiawan et al 2018).…”

Section: Introductionsmentioning

confidence: 99%

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Prey composition and correlation between morphometry and prey biomass weight of the endemic Nepenthes bicalcarata in Kalimantan, Indonesia

et al. 2022

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Abstract. Setiawan H, Hakim L, Fernandes AAR, Retnaningdyah C. 2022. Prey composition and correlation between morphometry and prey biomass weight of the endemic Nepenthes bicalcarata in Kalimantan, Indonesia. Biodiversitas 23: 5453-5460. Nepenthes bicalcarata Hook.f. is an endemic plant of the north-western part of Borneo, which is threatened by the conversion of its habitat. The understanding of the ecology of N. bicalcarata in regard to its prey is limited. This research aims to analyze the prey composition of N. bicalcarata and to investigate the correlation between pitcher morphometry and prey biomass weight. This research was done from November 2021 to March 2022 in a peat swamp primary forest in Sintang District, West Kalimantan Province, Indonesia. We used a quantitative descriptive approach and exploration method to gather data from N. bicalcarata in-situ habitat. The morphometry data of N. bicalcarata pitchers were collected in the field while the biomass trapped in N. bicalcarata pitcher liquid was sampled with a plastic bag and preserved with 70% of alcohol. Seven upper pitchers and 39 lower pitchers were recorded in this research. The composition of N. bicalcarata preys was dominated by Formicidae family including C. schmitzi, Polyrhachis sp. and Crematogaster sp.. Besides that, there were also mosquito larvae, ladybugs larvae, Ceratopogonidae larvae and some unidentified flying arthropods as the prey of N. bicalcarata. We found the plant’s parts in the lower pitchers of N. bicalcarata in the peat swamp forest, suggesting a possible mechanism of this plant to extract plant’s parts as alternative nutrient sources, yet this needs further research and intensive field observation. The correlation between pitcher volume and prey biomass weight was significant with P-value =0.00 (<0.01) and regression is formulated as Y (prey weight) = -0.1727 + 0.0039X (pitcher volume). This means that any increase in N. bicalcarata’s pitcher volume will increase the weight of the biomass linearly.

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Section: Composition and Biomass Of N Bicalcarata Preysmentioning

confidence: 80%

Section: Nepenthes Bicalcarata In Kantuk Customary Forestmentioning

confidence: 99%

Section: Introductionsmentioning

confidence: 99%

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Prey composition and correlation between morphometry and prey biomass weight of the endemic Nepenthes bicalcarata in Kalimantan, Indonesia

et al. 2022

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“…Unfortunately, the existence of the heath forest ecosystem is under threat due to changes in land cover resulting from forest fires, conversion to rubber and oil palm plantations, mining activities, illegal logging, and regional development. [4,7,8].…”

Section: Introductionmentioning

confidence: 99%

Heath forest identification using remote sensing in the surrounding area of the new capital city of Indonesia

Nisaa,

Sari,

Sulistioadi

2023

IOP Conf. Ser.: Earth Environ. Sci.

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The construction of Indonesia’s new capital city, Nusantara, is envisioned as a forest city that heavily relies on biodiversity. One of the forest ecosystem types surrounding the Nusantara landscape is the heath forest ecosystem, also known as Kerangas. Heath forest is a rare and extreme habitat, thriving in nutrient-poor environments characterized by low pH, quartz sand soil, and podsol soil. However, there is still a lack of knowledge regarding the heath forest in East Kalimantan, particularly in the Nusantara region. This research aims to map the location and characteristics of the heath forest in the surrounding area of Nusantara, specifically in Penajam Paser Utara Regency and Kutai Kartanegara Regency, East Kalimantan. The creation of a tentative heath forest map requires four parameters: elevation, soil texture, NDVI, and a land cover map. Landsat 9 imagery was employed to conduct unsupervised classification and generate a land cover map. The Normalized Difference Vegetation Index (NDVI) was also applied as an image transformation. The parameters were then overlaid using Geographic Information System (GIS) with a binary model. The results indicate that the heath forest covers an area of 56,646 hectares, representing 23% of the total Nusantara area, while the non-heath forest covers 194,610 hectares. The heath forest tentative map aligns with the RePPProT (Regional Physical Planning Project for Transmigration) land system map. Kerangas forests exhibit unique vegetation types, characterized by stunted trees, shrubs, and various epiphytes. Due to the nutrient-poor soil conditions, the vegetation in heath forests is typically sparse and of low height.

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“…The mean annual temperature in the area was 26.3°C. In a total area of 43.29 km 2 , there are at least 363,424 people (in 2020) with a density of 8.3 people per km 2 .…”

Section: Introductionmentioning

confidence: 99%

Species composition of terrestrial gastropods in an urban conservation area: Cibinong Botanical Garden

Nurhayati,

Prasetia,

Nadhira

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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A study conducted in the Cibinong Botanical Garden (CBG) aimed to reveal the diversity of terrestrial gastropods. The CBG is an ex-situ conservation area for plants and has become the green space in urban ecosystems. The area is located near the city centre and only a few kilometers away from the cement industry. Research of land snails in CBG was carried out in January 2020 and March 2023. Five plots of 100 m2 were observed using the time search method. In addition, 3L of soil and leaf litter per plot were sorted and sieved to collect micro snails. In a total of 131 specimens from four families were collected. We found a land snail species endemic to Java, Landouria sp. and invasive alien species, Allopeas gracile, Allopeas clavulinum, and Lissachatina fulica. Based on iNEXT analysis, the number of species found in CBG had reached the maximum limit (SC=1). Shannon index value was 1.76 which implies low diversity. Further research is needed to understand environmental factors impacting land snail diversity in CBG. Regardless of the presence of invasive alien species, the CBG is a suitable habitat for land snails and plays an important role as a conservation oasis in urban ecosystems.

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KELIMPAHAN, ASOSIASI DAN ANCAMAN HABITAT Nepenthes bicalcarata Hook.f. DI CAGAR ALAM MANDOR, KALIMANTAN BARAT

Cited by 5 publications

References 20 publications

Prey composition and correlation between morphometry and prey biomass weight of the endemic Nepenthes bicalcarata in Kalimantan, Indonesia

Prey composition and correlation between morphometry and prey biomass weight of the endemic Nepenthes bicalcarata in Kalimantan, Indonesia

Heath forest identification using remote sensing in the surrounding area of the new capital city of Indonesia

Species composition of terrestrial gastropods in an urban conservation area: Cibinong Botanical Garden

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