Environmental heterogeneity of a tropical river-to-sea continuum and its relationship with structure and phytoplankton dynamics - Lençóis Maranhenses National Park.

β-diversity and functional traits of phytoplankton indicators associated with environmental heterogeneity were investigated as environmental quality descriptors in coastal (CS), estuarine (ES), and limnetic (LS) sectors in a tropical river-to-sea ecosystem. Results showed that environmental heterogeneity was marked by spatial differences, contributing to biological heterogeneity. Sporadic and recurrent blooms were associated with environmental spatiotemporal variations and reflected a reduction in ES α-diversity.

Evaluation of metal contamination in surface sediments and macroalgae in mangrove and port complex ecosystems on the Brazilian equatorial margin.

This study evaluated metal contamination in surface sediments and macroalgae of mangroves and port complexes on the Brazilian equatorial margin. Samples were collected between August 2020 and February 2021 at seven points in a mangrove swamp under the influence of port activity and at two points without port activity. Metal concentrations in the macroalgae and sediments were determined using inductively coupled plasma‒optical emission spectrometry.

Intraspecific wing venation and phallosome taxonomy updates in species of Loneura Navs (Psocodea, Ptiloneuridae), with one new species from cave and key to Loneura species from Brazil.

cavernicola sp. nov. is here described and illustrated, based on male and female specimens collected in caves located in an ecotone region between the Brazilian Savannah (Cerrado biome) and the Atlantic Forest, in Minas Gerais state, southeastern Brazil.

Identification key, checklist and new species of Loneura Navs (Psocodea: 'Psocoptera: Ptiloneuridae) from Brazil.

Four Brazilian species of Loneura are described and assigned to infrageneric groups: L. digitiformis n. sp.

A new species of Loneura Navás and taxonomic update of L. boliviana Williner and L. meridionalis García Aldrete (Psocodea: Psocomorpha: Ptiloneuridae).

A new species of Loneura named as Loneura willineri n. sp. is described from Bolivia, and and variation in the venation of the fore and hindwings discussed.