인문학
사회과학
자연과학
공학
의약학
농수해양학
예술체육학
복합학
지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록·키워드
Abstract Emperor penguin populations are predicted to decline rapidly over the current century owing to habitat loss in Antarctica arising from warming oceans and loss of seasonal sea ice. Previous work using very high-resolution satellite imagery from 2009 to 2018 revealed a population decrease of 9.5%, characterized by a continuous decline until 2016, with a slight recovery until 2018. Our study, for the sector 0° to 90°W, includes the recent period of sea-ice loss between 2020 and 2023 and provides a regional population update for around a third of the global population. We used supervised classification of very high-resolution imagery, linked to a Markov model and Bayesian statistics. Results indicate a significant reduction in emperor penguin numbers, variance in the methodology is relatively high, but provides a best fit estimate of 22% decline over the period equating to a reduction of 1.6% per year. This decline exceeds the predictions of demographic models based on high-emission scenarios. It is unclear whether the sector analyzed here reflects conditions around the entire continent and our results highlight the need to extend the analysis to all sectors of Antarctica to determine whether these trends are reflected elsewhere.
인공지능 문자 인식 모델을 통해 추출된 텍스트로, 일부 오타나 오류가 포함될 수 있으나 지속적으로 개선 중입니다.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.