Mollusks (Gastropoda and Bivalvia) of the Multiple-Use Reserve Martín García Island, Río de la Plata River: biodiversity and ecology

César, Inés Irma; Martín, Santiago; Rumi, Alejandra; Tassara, Mónica P.

doi:10.1590/s1519-69842012000100014

Cited by 14 publications

(9 citation statements)

References 19 publications

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“…Species richness in the R tributary was relatively lower than observed in others. DO and TP have been found to be vital environmental factors associated with species richness (César et al., ), and our results support this hypothesis. Water level may well be another driver leading to a lower species richness in R tributary, as the mean annual water level in R tributary elevated dramatically over the past few decades.…”

Section: Discussionsupporting

confidence: 90%

Ecological effects of dams, alien fish, and physiochemical environmental factors on homogeneity/heterogeneity of fish community in four tributaries of the Pearl River in China

Zeng

Zhou²,

Guo³

et al. 2017

Ecology and Evolution

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In this study, we aimed to characterize the fish community structure and identify the drivers contributing to homogenization/differentiation processes in four tributaries to the Pearl River, Guangxi Province, China, over the past few decades. We sampled 22 sites seasonally from 2013 through 2015, and these sites were selected based on archived records of previous sampling conducted in the 1980s. Jaccard's faunal similarity index, cluster analysis, and canonical correspondence analysis (CCA) were applied to describe the homogenization/differentiation of fish community and illustrate the potential effectors. The number of fish species present in three of the four sampled tributaries declined dramatically over the past 30 years, leading toward a trend of increased fish community homogeneity throughout the watershed. Results from multidimensional scaling and cluster analyses allowed us to divide the study area into two distinct ecoregions. Four species (yellow catfish Pelteobagrus fulvidraco, pond loach Misgurnus anguillicaudatus, Nile tilapia Oreochromis niloticus, and sharpbelly Hemiculter leucisculus) were considered to be indicative fish species contributing more than 5% of the dissimilarity between the two eco‐regions according to the results of similarity percentage procedure. Results from CCA revealed that pH and latitude corresponded with the dominant fish species of each respective tributary. More specifically, CCA results allowed us to classify dominant fish species into three distinct groups. The first group was mainly located in Guijiang characterized by higher latitudes and lower pH values, the second group was widespread in the four tributaries, and the last group was primarily distributed in Yujiang, Youjiang, and Zuojiang characterized by lower latitudes and higher pH values. Spatial differentiation of fish community structure and temporal homogeneity of species composition were attributed to the joint actions of human interventions including construction of dams and introductions of exotic fish species that led to habitat degeneration and fragmentation, and unequal interspecies competitions.

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Section: Discussionsupporting

confidence: 90%

Ecological effects of dams, alien fish, and physiochemical environmental factors on homogeneity/heterogeneity of fish community in four tributaries of the Pearl River in China

Zeng

Zhou²,

Guo³

et al. 2017

Ecology and Evolution

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“…The dissolved oxygen level, pH, and water temperatures were highly correlated among themselves [25][26]. U. crassus individuals need high dissolved oxygen levels, so the oxygen value of the environment is very important [27].…”

Section: Discussionmentioning

confidence: 99%

Determining Bioecological and Biometric Properties of Freshwater Mussels (Unio crassus Philipsson, 1788)

Serdar¹,

Bulut²,

Eden³

et al. 2019

Pol. J. Environ. Stud.

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Population characteristics of Unio crassus, an endangered freshwater mussel in many countries, are very important. In this study, we have attempted to determine the environmental conditions of Aydın-Çine Creek and the biometric properties of U.crassus. The largest length during the study period was 92.50 mm in February, and the smallest length was 37.03 mm in April. In addition, the heaviest individual was found to be 124.15 g in February, while the smallest individual was 6.69 g in April. It was found that 141 individuals were found in a group of 70.0-79.99 mm at maximum in the distribution frequency of U.crassus in Çine Creek. The water temperature was measured at 9.8-24.0ºC, and oxygen value was 6.0-10.4 mg/L during the study. In the current environmental conditions in Çine Creek, various sizes and population development of U.crassus have been identified.

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“…Although several studies have been conducted on the morphology, taxonomy, and distribution of Pisidium (Ituarte, 2000(Ituarte, , 2001(Ituarte, , 2004(Ituarte, , 2006, few information is available about its ecology, especially to P. sterkianum (César et al, 2012).…”

Section: Discussionmentioning

confidence: 99%

First records of Freshwater Bivalves of Ilha Grande National Park, Paraná, Brazil

Ragonha

Pinha

Petsch

et al. 2014

Iheringia, Sér. Zool.

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ABSTRACT. The Ilha Grande National Park, Paraná, Brazil, is located in the Upper Paraná River and has characteristics typical of a floodplains. This protected area includes lagoons connected and disconnected to the Paraná River, although the latter also connect during periods of high water level, thus composing a heterogeneous group of lacustrine environments. The enormous potential the flora and fauna diversities are still little known to the region, as can be seen through benthic invertebrates, inclunding bivalves mollusks. The granulometric composition of these floodplain lagoons was formed mainly by mud and very fine sand. Furthermore, organic matter composition was predominantly of fine particulate. The other abiotic factors differed from lagoons located within the island of the park to those located in the left margin of Paraná River. The results demonstrated the importance of abiotic factors such as the physical composition of granulometric texture, organic matter and macrophyte banks, to the establishment of bivalves in these floodplain lagoons. We recorded bivalves of Pisidium (native), Diplodon (native), and Corbicula (invasive).The highest values of Diplodon sp. density were observed at São João/C lake, for Pisidium sterkianum (Pilsbry, 1897) at São João/M lake, and to Jatobá/C lagoon with high density of invasive species Corbicula fluminea (Müller, 1774). This study to obtain conduct the first records of freshwater bivalves in floodplains lagoon in the Ilha Grande National Park, and provides contributions to better understanding the ecology of these mollusks. The recording of native species in the region of Upper Paraná River floodplain after a lomg period without new records, demonstrated the importance of protecting the lagoons of the Ilha Grande National Park as they can be a possible refuge to some species of native freshwater bivalves. KEYWORDS. Floodplains, lagoons, native species, invaders.RESUMO. Bivalves límnicos do Parque Nacional de Ilha Grande, Paraná, Brasil. O Parque Nacional de Ilha Grande (Paraná, Brasil) é localizado no Alto Rio Paraná e apresenta características típicas de uma planície de inundação. Essa área de proteção ambiental inclui uma heterogeneidade de ambientes lacustres, dentre estes lagoas conectadas e não conectadas ao rio Paraná. Os enormes potenciais de diversidade tanto de flora quanto de fauna são ainda pouco conhecidos para o local, como para os invertebrados bentônicos, e dentre eles, os moluscos bivalves. A composição granulométrica das lagoas foi constituída basicamente de sedimentos mais finos, como lama e areia muito fina, e a matéria orgânica composta predominantemente por partículas finas. Também observamos diferenças espaciais nos fatores limnológicos, separando as lagoas situadas dentro da ilha do parque, das contidas na margem esquerda do rio Paraná. Esses dados demonstraram a importância dos fatores físicos como composição da textura granulométrica, matéria orgânica e bancos de macrófitas para o estabelecimento dos bivalves nesses ambientes. Registramos b...

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Mollusks (Gastropoda and Bivalvia) of the Multiple-Use Reserve Martín García Island, Río de la Plata River: biodiversity and ecology

Cited by 14 publications

References 19 publications

Ecological effects of dams, alien fish, and physiochemical environmental factors on homogeneity/heterogeneity of fish community in four tributaries of the Pearl River in China

Ecological effects of dams, alien fish, and physiochemical environmental factors on homogeneity/heterogeneity of fish community in four tributaries of the Pearl River in China

Determining Bioecological and Biometric Properties of Freshwater Mussels (Unio crassus Philipsson, 1788)

First records of Freshwater Bivalves of Ilha Grande National Park, Paraná, Brazil

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