인문학
사회과학
자연과학
공학
의약학
농수해양학
예술체육학
복합학
DBpia AI
AI 에이전트
AI 아이디어
AI 리더
AI 뷰어
Citeasy
크롬 서지관리 다운로드
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
Zooplankton play a key role in marine food webs, transferring energy from the base of the food web to higher trophic levels. In the Arctic, warming is altering nutrient availability and primary productivity, which could alter zooplankton-mediated transfer of energy through food webs. The Barents Sea Opening is warming rapidly, and has a strong influence on the Arctic as it is a prominent gateway for North Atlantic water advected into the polar region. Trophic position (TP) is an important metric because it identifies the location of an organism within a food web and therefore provides insight on food web functioning. Using nitrogen isotopes of amino acids in copepods, we investigated how the food web baseline and TP of the keystone <i>Calanus</i> species change in response to environmental gradients along the Barents Sea Opening in summer between 2010 and 2016. Spatial and interannual variation in net primary production and the North Atlantic Oscillation index both strongly influenced the nitrogen isotope baseline. We demonstrate that protistan microzooplankton play a key role in the diets of <i>Calanus</i> spp., accounting for 1-2 TP steps determined using alanine (TP<sub>Ala</sub>) and that this varied spatially and interannually; however, the TP of <i>Calanus</i> spp. determined using glutamic acid (TP<sub>Glu</sub> = 2.2 ± 0.2) indicated consistent herbivorous feeding. Flexibility in the diet of <i>Calanus</i> spp. under differing environmental conditions suggests that <i>Calanus</i> spp. may be able to adapt to changing food availability created by environmental instability driven by climate change.
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.
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