INVESTIGADORES
ANDERSON Christopher Brian
artículos
Título:
The presence of the genus Hyalella (Smith, 1875) in water bodies near Puerto Williams (Cape Horn Biosphere Reserve, 54º S, Chile) (Crustacea, Amphipoda)
Autor/es:
PATRICIO DE LOS RÍOS-ESCALANTE; ANDRES MANSILLA; CHRISTOPHER B. ANDERSON
Revista:
Pan-American Journal of Aquatic Sciences
Editorial:
INST BIOCIENCIAS, DEPT ECOLOGIA
Referencias:
Lugar: Rio Claro; Año: 2011 vol. 6 p. 273 - 279
ISSN:
1809-9009
Resumen:
The common amphipod genus Hyalella Smith, 1875 has been described in inland waters between northern Patagonia (38º S) and the southern zones of Tierra del Fuego Island (54º S). The aim of the present study is to analyse the species associations of the genus Hyalella using a presence/absence matrix and to study the spatial distribution of H. patagonica in small streams on Navarino Island in the Cape Horn Biosphere Reserve, an unpolluted and pristine protected area with sub-Antarctic native forests. The results of contingency table analysis indicate that the species reported from the study area are associated and that the H. patagonica populations have similar densities and an associated spatial distribution. Nevertheless, the negative binomial distribution does not fit the abundance data from the populations. This result agrees partially with similar findings for benthic macroinvertebrates, such as inland water decapods and insects. Ecological and limnological topics are discussed.