New information on the status and habitat of Hellmayr's Pipit (Anthus hellmayn) in south-central Chile. The Hellmayr's Pipit (Anthus hellmayn) is a poorly known species distributed through southern South America. It is represented by three subspecies; one of them, A. h. dabbenei, is considered mi...
Raimilla, Victor
,
Hauenstein Barra, Enrique
,
Norambuena, Heraldo V.
,
Jaramillo, Alvaro
,
Canete, Roberto
,
[NEW INFORMATION ON THE STATUS AND HABITAT OF HELLMAYR'S PIT (ANTHUS HELLMAYRI) IN SOUTH-CENTRAL CHILE]
,
NEW INFORMATION ON THE STATUS AND HABITAT OF HELLMAYR'S PIT (ANTHUS HELLMAYRI) IN SOUTH-CENTRAL CHILE
The aim of this study was to determine the feeding of Micropogonias furnieri (n= 256 of commercial size over 25 cm) during austral summer and winter 2004. During the summer period anchoveta Engraulis ringens was the main prey item in terms of percentage of frequency (%F), percentage of weight (%P...
The Chilean inland water zooplankton is characterized by a high calanoid copepod dominance and low species number that is due to the oligotrophic status. The present study is a first descriptions of crustacean zooplankton and littoral communities in ephemeral pools in Puaucho using co-occurrence ...
The concentrations of Cd, Cu, Mn, Ni, Pb, Fe and Zn were determined in superficial sediments extracted from nine zones of Budi Lagoon, located in the Araucania Region (Chile). The concentrations of these metals were determined by flame atomic absorption spectroscopy and the method was validated u...
Tapia, J.
,
Vargas Chacoff, L.
,
Bertran, C.
,
Pena Cortes, F.
,
Hauenstein Barra, Enrique
,
Schlatter, R.
,
Valderrama, A.
,
Lizana, C.
,
Fierro, P.
,
[Accumulation of potentially toxic elements in sediments in Budi Lagoon, Araucania Region, Chile]
,
Accumulation of potentially toxic elements in sediments in Budi Lagoon, Araucania Region, Chile
Riparian vegetation comprises the ecotonal zone in the transition between a water body and the adjacent terrestrial environment and it plays an elemental role in the functioning of aquatic ecosystems. Coverage, structure, and composition of vegetation have a fundamental influence in controlling t...
Carrasco, Sebastian
,
Hauenstein Barra, Enrique
,
Pena Cortes, Fernando
,
Bertran, Carlos
,
Tapia, Jaime
,
Vargas Chacoff, Luis
,
[Riparian vegetation quality evaluation of two coastal watersheds in southern Chile by applying QBR index as base for its territorial management and planning]
,
Riparian vegetation quality evaluation of two coastal watersheds in southern Chile by applying QBR index as base for its territorial management and planning
The water quality in a Southern Chile river was characterized using the Biotic Index in a spatio-seasonal context, to analyze the composition and distribution of benthic macroinvertebrates and their correlation with 14 physico-chemical parameters. Sampling was done over a year at 5 sampling stati...
Fierro, Pablo
,
Bertran, Carlos
,
Mercado, Maritza
,
Pena Cortes, Fernando
,
Tapia, Jaime
,
Hauenstein Barra, Enrique
,
Vargas Chacoff, Luis
,
[Benthic macroinvertebrate assemblages as indicators of water quality applying a modified biotic index in a spatio-seasonal context in a coastal basin of Southern Chile]
,
Benthic macroinvertebrate assemblages as indicators of water quality applying a modified biotic index in a spatio-seasonal context in a coastal basin of Southern Chile
The community of crustacean zooplankton in lakes can show temporal vertical variations in composition and abundance due to the influence of exposure to natural ultraviolet radiation. The aim of the present study was to analyse the zooplankton composition both at the surface and in the water colum...
De Los Ríos Escalante, Patricio
,
Hauenstein Barra, Enrique
,
Acevedo, Patricio
,
[DAILY VARIATIONS IN VERTICAL DISTRIBUTION OF CRUSTACEAN ZOOPLANKTON IN A MOUNTAIN LAKE ( LAKE TINQUILCO, 39 degrees S, ARAUCANIA REGION) IN CHILE]
,
DAILY VARIATIONS IN VERTICAL DISTRIBUTION OF CRUSTACEAN ZOOPLANKTON IN A MOUNTAIN LAKE ( LAKE TINQUILCO, 39 degrees S, ARAUCANIA REGION) IN CHILE
A coastal-lake wetland is a type of inland water ecosystem that does not occur very frequently in Chile, of which lakes Budi, Huillinco and Cucao are examples. Textural differences were found in the various constituent parts of the coastal lake sediments. Gravel was the smallest fraction and show...
Bertran, C.
,
Vargas Chacoff, L.
,
Pena Cortes, F.
,
Mulsow, S.
,
Tapia, J.
,
Hauenstein Barra, Enrique
,
Schlatter, R.
,
Bravo, A.
,
[Benthic macrofauna of three saline-lake wetlands on the coastal rim of southern Chile]
,
Benthic macrofauna of three saline-lake wetlands on the coastal rim of southern Chile
We describe the benthic macroinvertebrate associations Budi coastal lagoon southern Chile, salt nature. They relate the abundance and biomass species with organic matter levels and types of sediment, 9 stations were chosen for sampling. The muddy bottom is the substrate dominates more than gravel...
Bertran, Carlos
,
Vargas Chacoff, Luis
,
Pena Cortes, Fernando
,
Schlatter, Roberto
,
Tapia, Jaime
,
Hauenstein Barra, Enrique
,
[Distribution of the macrobenthic fauna in the Budi coastal lagoon, southern Chile]
,
Distribution of the macrobenthic fauna in the Budi coastal lagoon, southern Chile
Over the past few decades, land-use changes through conversion of global forest cover to exotic plantations is contributing to both habitat and biodiversity loss and species extinctions. To better understand human influences on ecosystem, we use diet composition from introduced Rainbow Trout Onco...
Fierro, Pablo
,
Quilodran, Loreto
,
Bertran, Carlos
,
Arismendi, Ivan
,
Tapia, Jaime
,
Pena Cortes, Fernando
,
Hauenstein Barra, Enrique
,
Arriagada, Raul
,
Fernandez, Eduardo
,
Vargas Chacoff, Luis
,
[Rainbow Trout diets and macroinvertebrates assemblages responses from watersheds dominated by native and exotic plantations]
,
Rainbow Trout diets and macroinvertebrates assemblages responses from watersheds dominated by native and exotic plantations