CAJ | 학술논문

拜尔斯半岛位于南极利文斯顿岛最西部，是南设得兰群岛中最大的无冰区。对采自拜尔斯半岛的一根长55 cm的企鹅粪土沉积柱P1进行了元素和同位素地球化学分析。通过对沉积物C/N、有机质来源和δ15 N的分析，发现P1沉积剖面中有机质主要来源于企鹅粪。利用富集系数、相关性分析、主成分分析等统计分析方法，识别出该沉积剖面中P、F、Cu、Hg、As、S六种元素具有共同的来源，与企鹅粪的输入密切相关，并且这些元素与TOC和δ15 N显著正相关，说明沉积剖面中这些元素含量主要受控于企鹅粪的输入程度。通过与长城站区阿德雷岛、东南极戴维斯站加德纳岛企鹅粪土沉积物的标型元素特征比较，发现上述三个地区的标型元素组合大体上一致，反映了整个南极地区企鹅粪土沉积物生物标型元素组合的共性。研究结果为进一步恢复该地区的企鹅种群数量演化，及其对气候变化的响应提供了可能。
배이사반도위우남겁리문사돈도최서부，시남설득란군도중최대적무빙구。대채자배이사반도적일근장55 cm적기아분토침적주P1진행료원소화동위소지구화학분석。통과대침적물C/N、유궤질래원화δ15 N적분석，발현P1침적부면중유궤질주요래원우기아분。이용부집계수、상관성분석、주성분분석등통계분석방법，식별출해침적부면중P、F、Cu、Hg、As、S륙충원소구유공동적래원，여기아분적수입밀절상관，병차저사원소여TOC화δ15 N현저정상관，설명침적부면중저사원소함량주요수공우기아분적수입정도。통과여장성참구아덕뢰도、동남겁대유사참가덕납도기아분토침적물적표형원소특정비교，발현상술삼개지구적표형원소조합대체상일치，반영료정개남겁지구기아분토침적물생물표형원소조합적공성。연구결과위진일보회복해지구적기아충군수량연화，급기대기후변화적향응제공료가능。
Byers Peninsula,which is located at the western end of Livingston Island,is the largest ice-free area among the South Shetland Islands.We collected a 55-cm-long sediment core (P1 )influenced by penguin droppings,and carried out in-depth analyses,including chemical element content and isotopic geochemical characteristics,for the sediment profile.Based on the analysis of C/N,sources of organic matter,and δ15 N in the sediment profile,we conclude that the organic matter in the P1 sediments mainly originated from penguin guano.Using enrichment fac-tors,correlation analysis,PCA and other statistical analysis methods,P,F,Cu,Hg,As,S were identified to have originated from the penguin droppings.The contents of these elements in the P1 sediment profile have a significant positive correlation with TOC andδ15N,reflecting that they were controlled by the relative fluctuation of guano input into the sediments.We compared our results with the bio-element assemblage of the ornithogenic sediments from Ardley Island near the Great Wall Station of West Antarctica,and Gardner Island near Davis Station of East Antarc-tica,and found that the bio-element assemblages of these three different areas are mostly consistent,reflecting their generality throughout the entire Antarctic area.Our results provide the foundation for reconstructing the historical penguin population in this region and its possible response to climate change.