Daftar merah IUCN: Perbedaan antara revisi
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# '''Kriteria A, B dan D''': Luas hunian </br> <!-- Tolong Terjemahkan --> <!--Area of occupancy is defined as the area within its 'extent of occurrence' (see point 9 above) which is occupied by a taxon, excluding cases of vagrancy. The measure reflects the fact that a taxon will not usually occur throughout the area of its extent of occurrence, which may contain unsuitable or unoccupied habitats. In some cases (e.g. irreplaceable colonial nesting sites, crucial feeding sites for migratory taxa) the area of occupancy is the smallest area essential at any stage to the survival of existing populations of a taxon. The size of the area of occupancy will be a function of the scale at which it is measured, and should be at a scale appropriate to relevant biological aspects of the taxon, the nature of threats and the available data (see point 7 in the Preamble). To avoid inconsistencies and bias in assessments caused by estimating area of occupancy at different scales, it may be necessary to standardize estimates by applying a scale-correction factor. It is difficult to give strict guidance on how standardization should be done because different types of taxa have different scale-area relationships. --> |
# '''Kriteria A, B dan D''': Luas hunian </br> <!-- Tolong Terjemahkan --> <!--Area of occupancy is defined as the area within its 'extent of occurrence' (see point 9 above) which is occupied by a taxon, excluding cases of vagrancy. The measure reflects the fact that a taxon will not usually occur throughout the area of its extent of occurrence, which may contain unsuitable or unoccupied habitats. In some cases (e.g. irreplaceable colonial nesting sites, crucial feeding sites for migratory taxa) the area of occupancy is the smallest area essential at any stage to the survival of existing populations of a taxon. The size of the area of occupancy will be a function of the scale at which it is measured, and should be at a scale appropriate to relevant biological aspects of the taxon, the nature of threats and the available data (see point 7 in the Preamble). To avoid inconsistencies and bias in assessments caused by estimating area of occupancy at different scales, it may be necessary to standardize estimates by applying a scale-correction factor. It is difficult to give strict guidance on how standardization should be done because different types of taxa have different scale-area relationships. --> |
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# '''Kriteria B dan D''': Wilayah </br> <!-- Tolong Terjemahkan --> <!-- The term 'location' defines a geographically or ecologically distinct area in which a single threatening event can rapidly affect all individuals of the taxon present. The size of the location depends on the area covered by the threatening event and may include part of one or many subpopulations. Where a taxon is affected by more than one threatening event, location should be defined by considering the most serious plausible threat. --> |
# '''Kriteria B dan D''': Wilayah </br> <!-- Tolong Terjemahkan --> <!-- The term 'location' defines a geographically or ecologically distinct area in which a single threatening event can rapidly affect all individuals of the taxon present. The size of the location depends on the area covered by the threatening event and may include part of one or many subpopulations. Where a taxon is affected by more than one threatening event, location should be defined by considering the most serious plausible threat. --> |
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Hampir punah |
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=== Kriterium === |
=== Kriterium === |
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Revisi per 4 Maret 2015 16.14
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| Tipe | Organisasi Internasional |
|---|---|
| Kantor pusat | Inggris |
Wilayah layanan | Internasional |
Bahasa resmi | Bahasa Inggris |
Organisasi induk | International Union for Conservation of Nature |
| Situs web | www |
Daftar merah IUCN (Inggris: IUCN Red List, atau dikenal juga dengan Red Data List) pertama kali digagas pada tahun 1964 untuk menetapkan standar daftar spesies dan upaya penilaian konservasinya[1]. IUCN Red List bertujuan memberi informasi dan analisis mengenai status, tren dan ancaman terhadap spesies untuk memberitahukan dan mempercepat tindakan dalam upaya konservasi keanekaragaman hayati[2].
Kriteria dan kriterium
Kriteria
- Kriteria A, C dan D: Populasi dan ukuran populasi
- Kriteria B dan C: Subpopulasi
- Kriteria A, B, C, dan D: Jumlah individu dewasa
- Kriteria A, C dan E: Keturunan
- Kriteria B dan C: Penurunan terus-menerus
- Kriteria B dan C: Fluktuasi ekstrem
- Kriteria A dan B: Taraf kejadian
- Kriteria A, B dan D: Luas hunian
- Kriteria B dan D: Wilayah
Hampir punah
Kriterium
- Kriterium A: Penurunan
- Kriterium B: Terfragmentasi parah
- Kriterium E: Analisis kuantitatif
Kategori
Punah
Suatu takson dinyatakan "punah" (Bahasa Inggris: extinct) jika tidak ada keraguan lagi bahwa individu terakhir telah mati setelah survei penuh gagal merekam satu individu yang masih hidup. Survei penuh dilakukan di habitatnya yang diketahui dan diharapkan, pada waktu yang tepat (diurnal, musiman, tahunan) di semua riwayat wilayahnya, berdasarkan siklus hidup dan bentuk kehidupan takson tersebut[4].
Punah di alam liar
Suatu takson dinyatakan "punah di alam liar" (Bahasa Inggris: extinct in the wild) jika diketahui hanya hidup dalam pembiakan, penangkaran, maupun sebagai populasi naturalisasi di luar wilayah penyebaran aslinya. Pernyataan dikeluarkan setelah survei penuh yang dilakukan di habitatnya yang diketahui dan diharapkan, pada waktu yang tepat (diurnal, musiman, tahunan) di semua riwayat wilayahnya, berdasarkan siklus hidup dan bentuk kehidupan takson tersebut.[4]
Kritis
Suatu takson dinyatakan "kritis" (Bahasa Inggris: critically endangered) ...
Genting
Suatu takson dinyatakan "genting" (Bahasa Inggris: endangered) ...
Rentan
Suatu takson dinyatakan "rentan" (Bahasa Inggris: vulnerable) ...
Hampir terancam
Suatu takson dinyatakan "hampir terancam" (Bahasa Inggris: near threatened) jika telah dievaluasi berdasarkan kriteria risiko dan tidak memenuhi syarat sebagai kategori kritis, genting, maupun rentan saat ini. Tetapi kategori ini mendekati persyaratan kategori terancam (kritis, genting, atau rentan) dalam waktu dekat.[4]
Risiko rendah
Suatu takson dinyatakan "risiko rendah" (Bahasa Inggris: least concern) jika telah dievaluasi berdasarkan kriteria risiko dan tidak memenuhi syarat sebagai kategori kritis, genting, rentan, maupun hampir terancam. Taksa yang luas dan berlimpah termasuk dalam kategori ini.[4]
Referensi
- ^ IUCN. The IUCN Red List of Threatened Species. http://www.iucn.org/about/work/programmes/species/our_work/the_iucn_red_list Diakses 7 Februari 2014
- ^ The IUCN Red List of Threatened Species. Red List Overview. http://www.iucnredlist.org/about/red-list-overview Diakses 7 Februari 2014
- ^ Jackson, P. & Nowell, K. (2008). " Panthera tigris ssp. sondaica ". IUCN Red List of Threatened Species. Version 3.1. International Union for Conservation of Nature. Diakses tanggal 7 Februari 2014.
- ^ a b c d The IUCN Red List of Threatened Species. (2001) IUCN Red List Categories and Criteria version 3.1. http://www.iucnredlist.org/technical-documents/categories-and-criteria/2001-categories-criteria Diakses 7 Februari 2014