A reconstruction of the marine mammal harvest by the Real Compañía Marítima through the analysis of historical sources (AD 1790–1804)

Author:

Vales Damián G1ORCID

Affiliation:

1. Laboratory of Marine Mammals, Center for the Study of Marine Systems (CESIMAR, CONICET), Argentina

Abstract

Humans have altered marine ecosystems over very long-time scales and historical data is often needed to understand the true magnitude of human impacts. The Southwest Atlantic Ocean has a long history of large-scale removal of marine vertebrates due to whaling, sealing, and fishing in the past three centuries. Historical catch records are crucial in assessing the conservation status of these historically over-exploited populations and setting suitable recovery goals. However, several gaps in the history of exploitation of many populations limit our ability to judge recoveries success. This study examines the history of the Spanish fishing company, the Real Compañía Marítima (Royal Maritime Company), and reconstructs its catches of marine mammals in Patagonia and on the north coast of the Río de la Plata. The analysis of a wide range of historical sources reveals that, between the years 1790 and 1804, the Company extracted less than 100 southern right whales Eubalaena australis, some 200,000 South American fur seals Arctocephalus australis and South American sea lions Otaria flavescens, and a few southern elephant seals Mirounga leonina. Although the Company’s whale catch is negligible compared to that of other nations in the same whaling grounds, the amount of fur seals and sea lions removed from the ecosystem deserves attention. This historical survey provides us with the first estimate of the catches made by the Real Compañía Marítima. However, these figures only represent a small part of the extractive activities that took place in the region and further research is encouraged to assess the true dimension of human impacts on Southwest Atlantic ecosystems. The incorporation of retrospective data into ecological studies can be laborious and may have inherent biases, but it also provides valuable information for comprehending modern ecosystems and formulating appropriate conservation plans.

Funder

Agencia Nacional de Promoción Científica y Tecnológica, Argentina

PADI Foundation

Publisher

SAGE Publications

Reference76 articles.

1. Anonymous (1802) Semanario de Agricultura, Industria y Comercio, 8 December. Available at: https://catalogo.bn.gov.ar/F/?func=direct&doc_number=001216677&local_base=GENER (accessed 14 May 2023).

2. Anonymous (1803a) El Correo mercantil de España y sus Indias, 4 July. Available at: http://hemerotecadigital.bne.es/issue.vm?id=0003243434&search=⟨=en (accessed 14 May 2023).

3. Anonymous (1803b) Semanario de Agricultura, Industria y Comercio, 30 November. Available at: https://catalogo.bn.gov.ar/F/?func=direct&doc_number=001216677&local_base=GENER (accessed 14 May 2023).

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