PELD - ELPA | Temporal data series of Benthic macrofauna abundance and composition from the Patos Lagoon estuary
PELD - ELPA | Programa Pesquisa Ecológica de Longa Duração no Estuário da Lagoa dos Patos e Costa Marinha Adjacente
Description
Provide a continuous long-term data set, to assess interannual and interdecadal variability of macrozoobenthic assemblages in the estuary of the Patos Lagoon, Southern Brazil.
Geographic Description
The Patos Lagoon at the southern Brazilian coastal plain (Rio Grande do Sul state) is the largest (10,360 km2) choked lagoon in the world stretching in a NE SW direction from the city of Porto Alegre (30º30’ S) to Rio Grande (32º12’ S). In the southern estuarine region, approximately 10 % of total area, a single and narrow inlet connects this lagoon to the Atlantic Ocean. The major tributary rivers at the northern and central areas of Patos Lagoon, and the São Gonçalo channel at the southern area, are significant freshwater sources from an extensive drainage basin. The hydrodynamics of Patos Lagoon estuary is strongly controlled by the discharge of tributary rivers and the action of predominant meteorological factors like winds, rainfall and evaporation.
Purpose
The general purposes of this data bank are to provide information on abundance and biological composition of macrofauna sampled in the Patos Lagoon estuary.
Data quality
Samples are collected by tecnical staff, Post-Graduate and trained students. The quality of data is checked monthly before the uploading in the data bank.
Methods
The samples were taken with a 10-cm-diameter PVC corer (0.0078 m2) buried 20 cm into the substrate. Benthic macrofauna samples were sieved through 0.3-mm meshes, fixed in formaldehyde (4 %), identified to the lowest taxonomic level (40x stereomicroscopes) and preserved in ethanol (70 %). The abundance data for each point represent the number of organisms for each species collected by the PVC corer.Data on composition and abundance of benthic macrofauna inhabiting the Patos Lagoon estuary have been biannually collected from August 1996 to December 2016. Data have been acquired through a biannual strategy, comprising Winter (August) and Summer (March) samplings. Samples are collected by a PVC corer with 20 cm in diameter and washed with a 300 µm sieve. All collected material is preserved in formaldehyde 4 %, the macrofauna specimens are identified and quantified in Laboratory.
Citation
Colling L A, Cavalca Bom F (2018): Temporal data series of Benthic macrofauna abundance and composition from the Patos Lagoon estuary. v1.8. Sistema de Informação sobre a Biodiversidade Brasileira - SiBBr. Dataset/Samplingevent. https://ipt.sibbr.gov.br/peld/resource?r=temporal_data_series_of_macrofauna_abundance_and_composition_from_the_patos_lagoon_estuary-&v=1.8
Rights
This work is licensed under a Creative Commons Attribution Non Commercial (CC-BY-NC) 4.0 License.
Usage statistics
Loading...
Digitised records
Looking up... the number of records that can be accessed through the SiBBr. This resource was last checked for updated data on 08 Apr 2023. The most recent data was published on 08 Apr 2023.
Click to view records for the PELD - ELPA | Temporal data series of Benthic macrofauna abundance and composition from the Patos Lagoon estuary resource.Metadata last updated on 2023-04-08 20:57:48.0