Conservation of carnivorous plants in the age of extinction

Cross, Adam T.; Krueger, Thilo; Gonella, Paulo Minatel; Robinson, Alastair S.; Fleischmann, Andreas

doi:10.1016/j.gecco.2020.e01272

Cited by 36 publications

(35 citation statements)

References 188 publications

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“…DR merupakan persentase luas bidang dasar (LBD) yang ditempati oleh masing-masing jenis terhadap LBD total semua jenis. Jumlah KR, FR, dan DR ditetapkan sebagai indeks nilai penting (INP) suatu jenis (Cox 1967;Mueller-Dombois & Ellenberg 1974 (Zulkarnaen et al 2017). Nilai chi-square (X 2 ) hitung kemudian dibandingkan dengan nilai chi-square (X 2 ) tabel pada taraf uji 5% yaitu 3,84.…”

Section: Analisis Data a Analisis Vegetasi Dan Asosiasi Tumbuhanunclassified

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

Sunardi

Mansur

2021

BKR

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Nepenthes bicalcarata Hook.f. merupakan jenis endemik dengan status konservasi rentan (vulnerable) menurut IUCN Red List. Penelitian ini bertujuan untuk mengetahui kelimpahan populasi, asosiasi, dan keterancaman habitat N. bicalcarata di Cagar Alam Mandor, Kalimantan Barat. Penelitian ini menggunakan metode analisis vegetasi, asosiasi jenis tumbuhan menggunakan indeks Ochiai, dan metode unsupervised classification pada citra Landsat 8 untuk mengetahui perubahan penutupan lahan. Penentuan lokasi pengambilan data dilakukan menggunakan metode purposive sampling. Pengambilan data vegetasi tumbuhan menggunakan sepuluh plot berukuran 10Í10 m. Hasil penelitian menunjukkan bahwa N. bicalcarata tersebar di delapan dari 14 kabupaten/kota di Kalimantan Barat. Populasi N. bicalcarata pada hutan kerangas berjumlah 300 individu/ha dan dan berasosiasi dengan jenis pohon Cratoxylum glaucum, Gymnostoma nobile, Antidesma coriaceum, Ficus variegata, dan Tristaniopsis merguensis. N. bicalcarata juga berasosiasi dengan Nepenthes lainnya, seperti N. ampullaria, N. rafflesiana, N. gracilis, N. mirabilis dan N. hookeriana. Perubahan penutupan lahan yang signifikan mengakibatkan peningkatan luasan areal terbuka dan pertambangan, sehingga mengancam habitat dan populasi N. bicalcarata. Kelimpahan N. bicalcarata di CA Mandor diprediksi akan semakin berkurang dengan adanya ancaman perubahan penutupan lahan tersebut. Berdasarkan kondisi tersebut, jenis ini perlu dilindungi dan dijaga kelestariannya di alam.

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Section: Analisis Data a Analisis Vegetasi Dan Asosiasi Tumbuhanunclassified

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

Sunardi

Mansur

2021

BKR

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“…Given the significant ongoing threats faced by D. allantostigma and lack of observations of extant mature individuals in over a decade, coupled with its apparent self-incompatibility and limited potential for forming a significant soil-stored seed bank, it has been proposed that the species may already represent the first Australian carnivorous plants species that has become extinct in the wild (Cross et al, 2020).…”

Section: One Of the Most Extreme Examples Of Range Restriction Inmentioning

confidence: 99%

“…Due to the high extent of habitat loss throughout the southwest region in the last century, some species, especially range-restricted Drosera, may have been driven to extinction before they were even known to science (Cross et al, 2020). Like many species from the highly-cleared southwest region of Western Australia, D. allantostigma was likely once more widespread, but the species is now known from only one location in a narrow band of remnant natural vegetation between a major road and cleared farmland (Fig.…”

Section: One Of the Most Extreme Examples Of Range Restriction Inmentioning

confidence: 99%

1005. DROSERA ALLANTOSTIGMA: Droseraceae

Cross¹,

Krueger²

2021

Curtis's Botanical Magazine

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is illustrated and described. The species is a tiny herbaceous carnivorous plant native to a single roadside location in Western Australia, from which it has not been observed in almost a decade. Weed encroachment, agricultural runoff and altered hydrology continue to affect the location. We discuss the conservation status and threats facing the species, and suggest that D. allantostigma may be the first Australian carnivorous plant to have become extinct in the wild.

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“…Even though the distribution of Nepenthes is wide through tropical and subtropical areas, the abundance of this genera is declining (Cross et al, 2020). Among the threats facing this species is over-collecting for horticulture trade and habitat destruction for agriculture and human development (Jennings et al, 2011).…”

Section: Species Richness and Soil Properties In Nepenthes Habitat At Bris Ecosystem In Setiu Terengganumentioning

confidence: 99%

SPECIES RICHNESS AND SOIL PROPERTIES IN Nepenthes HABITAT AT BRIS ECOSYSTEM IN SETIU, TERENGGANU

RAWI¹,

Rohani²

2021

UMT JUR

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A study was carried out to investigate the species richness of Nepenthes in the BRIS ecosystem at Kampung Rhu Tapai, Setiu, Terengganu, and their relationship with soil parameters. Selective sampling was conducted in two sites (Plot A and B) using a 100 m 2 quadrat in each site. Nepenthes were identified to species level, and the number of individuals was counted. Soil samples were taken next to the Nepenthes' rhizosphere to determine the soil properties. A total of 689 Nepenthes individuals were found within the plots, which comprises three species: Nepenthes ampullaria, N. gracilis and N. rafflesiana. Independent samples t-test was conducted to compare the number of individuals in Plot A and Plot B. The result suggested that the abundance of Nepenthes spp. between these two sites was not significantly different. Regarding the species, Nepenthes gracilis was found in a high abundance in both plots. Nepenthes in these sites thrived in the soil with low pH value, ranging from 3.4 to 3.9. Meanwhile, the percentages of organic matter in the study area were ranging from 12.30% to 72.80%.

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Conservation of carnivorous plants in the age of extinction

Cited by 36 publications

References 188 publications

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

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

1005. DROSERA ALLANTOSTIGMA: Droseraceae

SPECIES RICHNESS AND SOIL PROPERTIES IN Nepenthes HABITAT AT BRIS ECOSYSTEM IN SETIU, TERENGGANU

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