Evaluating Threatened Bird Occurrence in the Tropics by Using L-Band SAR Remote Sensing Data
The biodiversity loss in Southeast Asia indicates an urgent need for long-term monitoring, which is lacking. Much attention is being directed toward bird diversity monitoring using remote sensing, based on relation to forest structure. However, few studies have utilized space-borne active microwave...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-02-01
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| Series: | Remote Sensing |
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| Online Access: | https://www.mdpi.com/2072-4292/15/4/947 |
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| author | Shoko Kobayashi Motoko S. Fujita Yoshiharu Omura Dendy S. Haryadi Ahmad Muhammad Mohammad Irham Satomi Shiodera |
| author_facet | Shoko Kobayashi Motoko S. Fujita Yoshiharu Omura Dendy S. Haryadi Ahmad Muhammad Mohammad Irham Satomi Shiodera |
| author_sort | Shoko Kobayashi |
| collection | DOAJ |
| description | The biodiversity loss in Southeast Asia indicates an urgent need for long-term monitoring, which is lacking. Much attention is being directed toward bird diversity monitoring using remote sensing, based on relation to forest structure. However, few studies have utilized space-borne active microwave remote sensing, which has considerable advantages in terms of repetitive observations over tropical areas. Here, we evaluate threatened bird occurrence from L-band satellite data explaining forest structure in Sumatra, Indonesia. First, we identified L-band parameters with strong correlations with the forest layer structure, defined as forest floor, understory, and canopy layers. Then, we analyzed the correlation between threatened bird occurrence and L-band parameters identified as explaining forest structure. The results reveal that several parameters can represent the layers of forest floor, understory, and canopy. Subsequent statistical analysis elucidated that forest-dependent and threatened bird species exhibit significant positive correlations with the selected L-band parameters explaining forest floor and understory. Our results highlight the potential of applying microwave satellite remote sensing to evaluate bird diversity through forest structure estimation, although a more comprehensive study is needed to strengthen our findings. |
| first_indexed | 2024-03-11T08:13:02Z |
| format | Article |
| id | doaj.art-98d4faaca5424d5190ed6b774a871879 |
| institution | Directory Open Access Journal |
| issn | 2072-4292 |
| language | English |
| last_indexed | 2024-03-11T08:13:02Z |
| publishDate | 2023-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Remote Sensing |
| spelling | doaj.art-98d4faaca5424d5190ed6b774a8718792023-11-16T23:01:39ZengMDPI AGRemote Sensing2072-42922023-02-0115494710.3390/rs15040947Evaluating Threatened Bird Occurrence in the Tropics by Using L-Band SAR Remote Sensing DataShoko Kobayashi0Motoko S. Fujita1Yoshiharu Omura2Dendy S. Haryadi3Ahmad Muhammad4Mohammad Irham5Satomi Shiodera6College of Agriculture, Tamagawa University, Tokyo 194-8610, JapanCenter for Southeast Asian Studies, Kyoto University, Kyoto 606-8501, JapanResearch Institute for Sustainable Humanosphere, Kyoto University, Kyoto 611-0011, JapanThe School of Animal Biosciences at the Faculty of Graduate Programs, IPB University, Bogor 16151, IndonesiaFaculty of Mathematics and Natural Sciences, Riau University, Pekanbaru 28293, IndonesiaResearch Center for Biology of Indonesian Institute for Sciences, Jakarta 12710, IndonesiaFaculty of Global Liberal Studies, Nanzan University, Nagoya 466-8673, JapanThe biodiversity loss in Southeast Asia indicates an urgent need for long-term monitoring, which is lacking. Much attention is being directed toward bird diversity monitoring using remote sensing, based on relation to forest structure. However, few studies have utilized space-borne active microwave remote sensing, which has considerable advantages in terms of repetitive observations over tropical areas. Here, we evaluate threatened bird occurrence from L-band satellite data explaining forest structure in Sumatra, Indonesia. First, we identified L-band parameters with strong correlations with the forest layer structure, defined as forest floor, understory, and canopy layers. Then, we analyzed the correlation between threatened bird occurrence and L-band parameters identified as explaining forest structure. The results reveal that several parameters can represent the layers of forest floor, understory, and canopy. Subsequent statistical analysis elucidated that forest-dependent and threatened bird species exhibit significant positive correlations with the selected L-band parameters explaining forest floor and understory. Our results highlight the potential of applying microwave satellite remote sensing to evaluate bird diversity through forest structure estimation, although a more comprehensive study is needed to strengthen our findings.https://www.mdpi.com/2072-4292/15/4/947biodiversityforestryimage decompositionL-bandradar polarimetrysynthetic aperture radar |
| spellingShingle | Shoko Kobayashi Motoko S. Fujita Yoshiharu Omura Dendy S. Haryadi Ahmad Muhammad Mohammad Irham Satomi Shiodera Evaluating Threatened Bird Occurrence in the Tropics by Using L-Band SAR Remote Sensing Data Remote Sensing biodiversity forestry image decomposition L-band radar polarimetry synthetic aperture radar |
| title | Evaluating Threatened Bird Occurrence in the Tropics by Using L-Band SAR Remote Sensing Data |
| title_full | Evaluating Threatened Bird Occurrence in the Tropics by Using L-Band SAR Remote Sensing Data |
| title_fullStr | Evaluating Threatened Bird Occurrence in the Tropics by Using L-Band SAR Remote Sensing Data |
| title_full_unstemmed | Evaluating Threatened Bird Occurrence in the Tropics by Using L-Band SAR Remote Sensing Data |
| title_short | Evaluating Threatened Bird Occurrence in the Tropics by Using L-Band SAR Remote Sensing Data |
| title_sort | evaluating threatened bird occurrence in the tropics by using l band sar remote sensing data |
| topic | biodiversity forestry image decomposition L-band radar polarimetry synthetic aperture radar |
| url | https://www.mdpi.com/2072-4292/15/4/947 |
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