Laura C. Armendáriz

Laura C. Armendáriz
Instituto de Limnología "Dr. Raúl A. Ringuelet" | ILPLA · Laboratorio Bentos

Dra. en Ciencias Naturales

About

44
Publications
6,609
Reads
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435
Citations
Citations since 2016
13 Research Items
190 Citations
201620172018201920202021202205101520253035
201620172018201920202021202205101520253035
201620172018201920202021202205101520253035
201620172018201920202021202205101520253035
Additional affiliations
December 2018 - present
Universidad Nacional de La Plata
Position
  • Especialista en Docencia Universitaria
December 1998 - present
Instituto de Limnología "Dr. Raúl A. Ringuelet"
Position
  • Dra en Cs Naturales
September 1993 - present
Universidad Nacional de La Plata
Position
  • Catedra Zoologia General

Publications

Publications (44)
Preprint
Most studies exploring land use impacts have focused on taxonomic metrics, but interest in the functional approach has increased because it helps to understand the relationships between community structure and functioning of aquatic ecosystems. We evaluated how functional and taxonomic approaches contribute to assessing the effects of land use on m...
Article
The metacommunity theory includes processes that contribute, at different scales, to the understanding of the distribution of organisms in space and aims to assess the relative importance of spatial and environmental factors in the structuring of communities. Fluvial ecosystems of the Argentine Pampas are characterized by their environmental hetero...
Article
Riparian areas of riverine plains develop extensive floodable areas named riverine wetlands, which are essential to the water cycle balance and ecosystem dynamics. In this study, we contrasted the hydrological and physicochemical variables of riverine wetlands of both peri-urban areas impacted by intensive farming and those of rural areas with the...
Article
Full-text available
A new freshwater fabriciid species (Sabellida, Fabriciidae) from the Uruguay River, Argentina, with some remarks on the relationships of Monroika Hartman, 1951, Manayunkia Bourne, 1884 and Brandtika Jones, 1974 Abstract Between the years 2007 and 2009 a hitherto unknown fabriciid species was found in the Lower Uruguay River, Argentina. Initially, i...
Article
Full-text available
En este estudio se caracteriza el ensamble de macroinvertebrados en bañados de desborde fluvial de cuatro arroyos pampeanos bonaerenses con diferentes actividades en el uso del suelo (intensa horticultura y ganadería extensiva) desde un punto de vista estructural y funcional. Se aplicaron índices bióticos, ecológicos, análisis multivariados y se an...
Article
Full-text available
The Chico river, located in the center of Santa Cruz, runs 600 km from its source to its mouth. In its middle reaches, is the town of Gobernador Gregores (48° 45' 3"S, 70° 14' 54" W), which exerts influence on the river through agricultural activities and the discharge of urban sewages. In order to know the degree of impact on the water quality of...
Conference Paper
Full-text available
Los bañados de desborde fluvial ofrecen varios servicios ecosistémicos, entre ellos la amortiguación de sustancias exógenas que los atraviesan y la mejora en las condiciones del hábitat. Asimismo es sabido que los macroinvertebrados son buenos bioindicadores de calidad del agua y encuentran en las macrófitas un soporte adecuado para su desarrollo....
Article
Full-text available
The city of La Plata, Argentina, is situated in a low alluvial zone, with streams having insufficient drainage into the Río de la Plata estuary. In April 2013, a prodigious storm front caused unprecedented flooding in the city and environs that resulted in extensive loss of life and property, especially in the Del Gato stream basin. Through an anal...
Article
One of the most challenging aspects of quality indices has been to compile reliable measures of the species’ sensitivity to various magnitudes and different kinds of ecosystem attributes. Occupancy modelling has become increasingly useful to ecologists because provides a flexible framework to estimate the habitat use as a function of site informati...
Article
Full-text available
With the purpose of collecting macroinvertebrates for benthic studies of hill streams of the Argentinean Pampean ecoregion, a sampling program was performed in different seasons during 2015. The ingolfiellid crustaceans described in this paper were found only in May 2015 in a sector of the rithron of the Ventana Stream located below the point of th...
Chapter
Full-text available
Hydrological ecosystem services involve the regulation of water flows, the reduction of the flooding impact, the soil erosion and the sediment accumulation in the watercourses, also including the maintenance and improvement of the water quality, the aquiferous recharge and the aquatic habitats. The impermeability of the soil due to urbanization, th...
Poster
Full-text available
Introducción. Los macroinvertebrados son un grupo bien representado en los ecosistemas de agua dulce y ampliamente utilizados en la evaluación de la calidad del agua. Problema. Muchos índices bióticos utilizados para tal fin se basan en valores de tolerancia estimados en ciertos casos a partir de información obtenida de la bibliografía, no siempre...
Article
We investigated the responses of the assemblage of Oligochaeta and Aeolosomatidae to organic pollution; comparing taxonomic richness, diversity, abundance, and diet of the individuals inhabiting two lowland streams with different degrees of anthropic impact (the Rodríguez and the Carnaval) belonging to the Río de la Plata basin, Argentina. The phys...
Article
Full-text available
We investigated the responses of the assemblage of Oligochaeta and Aeolosomatidae to organic pollution; comparing taxonomic richness, diversity, abundance, and diet of the individuals inhabiting two lowland streams with different degrees of anthropic impact (the Rodriguez and the Carnaval) belonging to the Rio de la Plata basin, Argentina. The phys...
Article
Full-text available
The external ultrastructure of Manayunkia speciosa Leidy, 1858 from specimens collected at the lower Uruguay River, South America is described using scanning-electron-microscopy. The branchial crown has a pair of semicircular lateral lobes, a pair of mediodorsal radioles and a pair of medioventral ones. Radiolar surfaces are ciliated. The faecal gr...
Article
Full-text available
AIM: This study evaluated the use of oligochaetes at different levels of taxonomic resolution as environmental indicators in Argentine lowland streams affected by different land uses. METHODS: Sampling sites were grouped based on the physicochemical and habitat characteristics (low-, moderate-, and high-impact disturbance). Collection of the oligoc...
Article
One of the possible consequences of climatic change for streams and rivers in the pampean region of South America is an increment in nutrient loads. To analyze this possible perturbation on a biological scale, the response of oligochaetes to an experimental eutrophication of the La Choza Stream, Argentina was studied. We proposed that the addition...
Article
Full-text available
The oligochaete assemblage on the Argentine coast of the Rio de la Plata estuary was sampled seasonally within environments having different types of disturbances. Three habitats were sampled: sediments free of vegetation, sediments within bullrush stands and substrates with Limnoperna fortunei. The species richness, evenness and Shannon-Wiener div...
Article
Full-text available
We report the migration of Manayunkia speciosa from its distribution in North America into the Neotropical Region (Argentina). We collected specimens from November 2007 to March 2009 in the lower Uruguay River-at 33° 5.01′S 58° 12′W, 33° 5.9′S 58°25.2′W from sediments reaching densities of 2,890 ind. m−2, at a mean abundance of 350 ind. m−2. Introd...
Article
Full-text available
The life cycle (March 1996-March 1997) of Dero (Aulophorus) costatus was studied in a vegetated pond located at Los Talas, Argentina. A change in the composition of the vegetation cover _developing Azolla sp_ produced the displacement of Allonais lairdi by the species here studied. Inmature, mature and asexually reproductive specimens, forming chai...
Article
Full-text available
The life cycle (March 1996-March 1997) of Dero (Aulophorus) costatus was studied in a vegetated pond located at Los Talas, Argentina. A change in the composition of the vegetation cover -developing Azolla sp- produced the displacement of Allonais lairdi by the species here studied. Inmature, mature and asexually reproductive specimens, forming chai...
Article
Full-text available
The aim of the present work conducted at the Refugio de Vida Silvestre Bahía Samborombón is to analyse the most relevant aspects of the fecundity of Chasmagnathus granulatus and Uca uruguayensis. Samplings were carried out from March 2001 to February 2003. Ovigerous females of U. uruguayensis (N = 13) and C. granulatus (N = 25) were found during sp...
Article
Full-text available
Secondary production of Chasmagnathus granulatus was calculated at the Refugio de Vida Silvestre Bahía Samborombón, Argentina (36 degrees 16' S and 57 degrees 06' W). Sampling was conducted on nine occasions between March 2001 and February 2003, crabs were collected by hand, physico-chemical variables, granulometry and organic matter contents of th...
Article
Full-text available
The experiments carried out with S. lacustris showed that the temperature plays a role of importance in the rate of asexual reproduction, as for the number of zooids produced by individual, as well as to the size reached by them. On the other hand, it would regulate the rate of growth and the sexual reproduction, giving place to the maturity of the...
Article
Full-text available
Specimens of Uca uruguayensis were collected (n = 1200, 216 megalopae, 984 undifferentiated and adults), counted and classified as males, females or undifferentiated individuals. Each was measured (total carapace width, CW) and weighed (dry weight, DW). The crabs were analyzed and separated into cohorts by the conversion of polymodal width-frequenc...
Article
Full-text available
Specimens of Uca uruguayensis were collected (n = 1200, 216 megalopae, 984 undifferentiated and adults), counted and classified as males, females or undifferentiated individuals. Each was measured (total carapace width, CW) and weighed (dry weight, DW). The crabs were analyzed and separated into cohorts by the conversion of polymodal width-frequenc...
Article
Full-text available
The megalopa stage of the fiddler crab endemic to the Neotropical region, Uca uruguayensis, is redescribed, measured and illustrated from 216 specimens collected at Channel 1, Samborombón Bay, Argentina, the southernmost permanent population of the species. Special attention is given to the description of the types of setae, which are compared to t...
Article
Full-text available
The aim of the present work conducted at the Refugio de Vida Silvestre Baha Samborombn, Argentina, is to analyse the most relevant aspects of the life cycles of Chasmagnathus granulatus and Uca uruguayensis: their abundance, size distribution and sex ratio in order to be used for make management purposes. A total of 1200 individuals of U. uruguayen...
Article
Full-text available
BIODIVERSITY OF THE CRUSTACEA (ANOSTRACA, NOTOSTRACA, SPINICAUDATA, LAEVICAUDATA, OSTRACODA, AMPHIPODA Y BRACHYURA TRICHODACTYLIDAE)OF THE ARGENTINE MESOPOTAMIA. This paper provides update information about crus- tacean biodiversity: Anostraca, Notostraca, Spinicaudata, Laevicaudata, Ostracoda, Amphipoda and Brachyura Trichodactylidae from the meso...
Article
Full-text available
Apolocystis janovyi, a new species of acephaline monocystid gregarine is described from the coelomic cavity of the oligochaete Microscolex dubius Fletcher, 1887; A. janovyi is the first monocystid species described from this host. These parasites differ from previously described species of Apolocystis in having a larger size range, especially small...
Article
Full-text available
The objective of this paper is to provide data on the distribution and ecology of oligochaetes and aphanoneurans occurring in the Ro de la Plata, Argentina, including details regarding, their densities, faunal characteristics, species richness, diversity and equitability. Between 1995 and 1997, a total of five stations on the Ro de la Plata were sa...
Article
Full-text available
Population dynamics of Stylaria lacustris were analyzed over 2 years in a pond located at Los Talas, Argentina. In both years, the peak in abundance, due to intense asexual reproduction, fell at the end of winter, and was followed by mature individuals. The species was not collected during summer. Temperature was the main factor regulating the popu...
Article
Full-text available
The main objective of this work is to analyse the life cycle of Allonais lairdi Naidu, 1965 considering seasonal variations in abundance and biomass, periods of asexual and sexual reproduction, and dispersion. Quantitative samples of the vegetation were taken fortnightly (July 1994-1995) from a lentic water body located in Los Talas, Buenos Aires P...
Article
Full-text available
An analysis was made of specific richness (S), specific diversity (H), equitability (J), frequency (F), dominance (Dm) and density (D) of the macroinvertebrates associated with the invasive species Limnoperna fortunei (Dunker, 1857), was made. Limnoperna fortunei caused an increase in the specimen number on the rocky environment studied. The speci...

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