Distribution and Density of Kelp Geese and Flightless Steamer Ducks Along the Beagle Channel, Tierra del Fuego, Argentina

Waterbirds ◽  
2002 ◽  
Vol 25 (2) ◽  
pp. 225 ◽  
Author(s):  
Andrea Raya Rey ◽  
Adrian Schiavini
Author(s):  
Dánae Fiore ◽  
Angélica Tivoli

This chapter discusses some aspects of the multi-dimensional nature of human–environment relationships. It focuses on the interaction established between people and animals in the Beagle Channel region (Tierra del Fuego, South America; Figure 5.1) through an analysis of taxon selection or avoidance in two inter-related spheres: subsistence and ceremonial art. The selection or avoidance of a particular species can be related to environmental, economic, political, and ideological factors, and our aim is to point out which of these factors influenced the high exploitation of certain taxa and the low representation of others. We achieve this by comparing archaeological data with spatially and temporally contemporaneous ethnographic information about the representation of animal species in ceremonial body paintings. Thus, we seek to explain whether the selection of some species and the avoidance of others in the subsistence sphere was being reinforced by or forbidden according to symbolic values that stemmed from the ceremonial sphere. Such questions derive from a theoretical premise that dismisses the notion of absolute optimality in human practices. It proposes instead that people’s actions and decisions are not guided only by rational principles and cost-minimizing aims: they can also be non-rational and non-optimal, and yet can make a socio-economic system function and reproduce efficiently through time and space without collapse. We argue that archaeological techniques and data have much to contribute to an understanding of the complexity of human–environment relations—particularly the ability to critique the overly simplistic economic models that often feed into popular and bureaucratic approaches to human environments. During the last fifteen years, one of the most popular approaches to subsistence in prehistoric and non-industrial societies has been the application of optimality models (e.g. Broughton 1994; Grayson and Delpech 1998; Nagaoka 2002, among others). In principle, these models were conceived as methodological tools through which the researcher lays out a hypothetical scenario of how resources should be consumed if people were trying to minimize costs and maximize benefits towards reaching an optimal result.


Author(s):  
M. Carolina Romero ◽  
Gustavo A. Lovrich ◽  
Federico Tapella ◽  
Sven Thatje

Munida subrugosa is the most abundant galatheid crab species in the Beagle Channel (55°S 68°W) off Tierra del Fuego, Argentina. Samples of crabs and the epibenthic community were taken on a monthly basis at two different depth strata (<40 m and >70 m), by means of epibenthic trawling from 1998 to 1999. Stomach contents from 1582 crabs were analysed, out of which only 2% had empty stomachs. The quantity of food in the stomach contents was clearly seasonal and similar at both depths. The organic matter varied throughout the year and between both depths, being significantly higher in summer/spring than in autumn/winter. Munida subrugosa shows two different and simultaneous feeding habits: (1) as a predator M. subrugosa feeds on crustaceans, algae, and polychaetes; and (2) as a deposit feeder M. subrugosa consumes particulate organic matter and organisms associated with the superficial layer of the sediment. The composition of the diet of Munida subrugosa was similar for both years, and independent of depth, sex or season. Munida subrugosa selected crustaceans only in autumn and winter, whereas most food items were found according to their availability in the habitat.


2006 ◽  
Vol 16 (4) ◽  
pp. 328-337 ◽  
Author(s):  
R. Macchiarelli ◽  
L. Bondioli ◽  
S. Caropreso ◽  
A. Mazurier ◽  
G. Merceron ◽  
...  

2009 ◽  
Vol 273 (1-2) ◽  
pp. 111-122 ◽  
Author(s):  
María Soledad Candel ◽  
Ana María Borromei ◽  
Marcelo A. Martínez ◽  
Sandra Gordillo ◽  
Mirta Quattrocchio ◽  
...  

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