ABSTRACT

The Pampas deer (Ozotoceros bezoarticus) is an endangered ungulate from South American. The following paper presents the first investigation on the isotopic ecology (δ¹³C_collagen; δ¹⁵N_collagen) of modern populations of Pampas deer. The information obtained is compared with new δ¹³C and δ¹⁵N data of Pampas deer bones recovered from archaeological sites in the Central Pampean Dunefields (Inland Pampa phytogeographic area) and with previously published archeofaunistic isotope data for sites from eastern central Argentina. The range of δ¹³C values of Pampas deer is broad, ranging from a diet dominated by C₃ plants to a mixed diet of C₃ and C₄ plants. The δ¹⁵N values mainly show distinct signals between the Atlantic coast and the interior. The diet breadth of the Pampas deer suggests a high adaptability to different environments, a crucial factor for conservation programs of this species. The δ¹³C values of the Inland Pampa do not show great differences between the Middle Holocene, Late Holocene and today. Adaptation strategies of the Pampas deer to the environmental changes during the Holocene were not associated with a modification of their feeding habits, but rather with social and demographic strategies. These variations in ecology conditioned the predictability of this prey for hunter-gatherers.

摘要

潘帕斯鹿 ( Ozotoceros bezoarticus ) 是一种来自南美洲的濒危有蹄类动物。以下论文介绍了对现代南美大草原鹿种群的同位素生态学（δ ¹³ C_胶原蛋白；δ ¹⁵ N_{胶原蛋白）的首次调查。}将获得的信息与从中部潘帕沙丘（内陆潘帕植物地理区域）的考古遗址中回收的潘帕斯鹿骨骼的新 δ ¹³ C 和 δ ^{15 N 数据以及先前公布的阿根廷中东部遗址的考古动物同位素数据进行了比较。}南美大草原鹿的δ ¹³ C 值范围很广，从以 C _{3为主的饮食不等植物以 C 3}和 C ₄植物的混合饮食为食。δ ¹⁵ N值主要表现出大西洋沿岸和内陆之间的明显信号。潘帕斯鹿的饮食范围表明对不同环境的高度适应性，这是该物种保护计划的一个关键因素。内陆潘帕的δ ¹³ C值在中全新世、晚全新世和今天之间没有太大差异。潘帕斯鹿在全新世期间对环境变化的适应策略与其摄食习惯的改变无关，而是与社会和人口策略有关。生态学的这些变化决定了这种猎物对狩猎采集者的可预测性。