Understanding patterns of ecological specialization, the processes underlying niche partitioning and how they translate into the structure of interaction networks is a persistent challenge in ecology. Advances on this regard are limited by the prevalent focus on single spatial scales, lack of tests of the mechanisms underlying specialization, and scarce investigation of some types of interactions. Here we investigated the patterns of interaction between plants and florivores (flower‐breeding drosophilids, FBD) at species‐ and community‐level and at local and regional scales, and tested the relative importance of multiple potential drivers of frequencies of interactions in a local network. First, based on a year‐round collection of 42 322 flowers belonging to 82 plant species, we investigated species specialization and network structure and tested whether frequencies of interactions were related to plant–consumer temporal overlap and resource availability. Second, we built a regional florivore–plant meta‐network for the Neotropical region and tested its structure for nestedness, modularity and overall specialization. Our findings revealed that although FBD species span a broad range of degrees of specialization, most species were highly specialized. At both local and regional scales, network structure was highly modular and non‐nested, presenting high complementary specialization. Moreover, phenological overlap between FBD and their hosts was the most influential driver of frequency of interactions, in comparison to abundance and traits. By describing the structure of FBD–plant networks, our results illustrate how a highly diverse and specialized system retains interaction patterns found in other types of interaction networks which are often driven by different processes. Furthermore, despite undersampling of interactions in the meta‐network caused by the lack of studies on this system and the high diversity of Neotropical FBD's, the high modularity and consistency of some clade–clade modules across spatial scales suggests the importance of evolutionary history and physiological constraints in shaping interactions in this system.
Encounters between flowers and invertebrates are key events for the functioning of tropical forests. Assessing the structure of networks composed of the interactions between those partners leads to a better understanding of ecosystem functioning and the effects of environmental factors on ecological processes. Gathering such data is, however, costly and time‐consuming, especially in the highly diverse tropics. We aimed to provide a comprehensive repository of available flower–invertebrate interaction information for the Atlantic Forest, a South American tropical forest domain. Data were obtained from published works and “gray literature,” such as theses and dissertations, as well as self‐reports by co‐authors. The data set has ~18,000 interaction records forming 482 networks, each containing between one and 1061 interaction links. Each network was sampled for about 200 h or less, with few exceptions. A total of 641 plant genera within 136 different families and 39 orders were reported, with the most abundant and rich families being Asteraceae, Fabaceae, and Rubiaceae. Invertebrates interacting with these plants were all arthropods from 10 orders, 129 families, and 581 genera, comprising 2419 morphotypes (including 988 named species). Hymenoptera was the most abundant and diverse order, with at least six times more records than the second‐ranked order (Lepidoptera). The complete data set shows Hymenoptera interacting with all plant orders and also shows Diptera, Lepidoptera, Coleoptera, and Hemiptera to be important nodes. Among plants, Asterales and Fabales had the highest number of interactions. The best sampled environment was forest (~8000 records), followed by pastures and crops. Savanna, grasslands, and urban environments (among others) were also reported, indicating a wide range of approaches dedicated to collecting flower–invertebrate interaction data in the Atlantic Forest domain. Nevertheless, most reported data were from forest understory or lower strata, indicating a knowledge gap about flower–invertebrate interactions at the canopy. Also, access to remote regions remains a limitation, generating sampling bias across the geographical range of the Atlantic Forest. Future studies in these continuous and hard‐to‐access forested areas will yield important new information regarding the interactions between flowers and invertebrates in the Atlantic Forest. There are no copyright restrictions on the data set. Please cite this data paper if the data are used in publications and teaching events.
As plataformas de trabalho digital são uma realidade que afeta diversos trabalhadores e trabalhadoras. Este grupo de pessoas passa a desenvolver suas atividades com meios de trabalho próprios e, não raras vezes, sem os mais basilares direitos trabalhistas. Professores e professoras já estão enfrentando esta realidade de flexibilização e precarização do trabalho. Atualmente, já é possível contratar docentes por intermédio de plataformas digitais, uma das características do que veio a se constituir como trabalho uberizado. Partindo deste contexto, o objetivo deste artigo é analisar as repercussões sobre as novas formas do trabalho docente advindas das plataformas digitais. Assim, a pesquisa foi desenvolvida através do método qualitativo, sendo realizada uma pesquisa bibliográfica de natureza exploratória. Entre os achados da investigação está o fato de que a remuneração é estabelecida somente pelas atividades realizadas no período de aula, sendo desconsiderada toda a preparação anterior e desdobramentos seguintes. As professoras e professores são transformados em conteudistas, em detrimento do fato de seu trabalho ir muito além desta compreensão. A submissão a esta realidade deve-se ao intuito de melhorar a renda familiar, ou mesmo por conta da falta de vagas no mercado de trabalho docente. O resultado observado é a destituição da proteção financeira, da saúde e da seguridade social, o que implica diretamente no trabalho docente e na vida de tais profissionais de forma negativa. Em suma, a uberização da docência acaba por precarizar ainda mais o trabalho dos professores e das professoras, repercutindo no âmbito da sua vida para além da escola.
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