Espécies de Heterópteros Dulciaquícolas (Hemiptera, Heteroptera, Gerromorpha e Nepomorpha) Registradas no Estado do Rio de Janeiro, Brasil

A preliminary list of the species of Gerromorpha and Nepomorpha from Rio de Janeiro State, southeastern Brazil, is presented. The list, which was prepared with basis on a careful survey of the literature and examination collections, includes 37 semiaquatic and 76 water bug species, totalizing 113 recorded species. The available data on the distribution of each species within the state (municipalities) are given. Most of the recorded species are from the now heavily fragmented Atlantic Forest of Brazil.Uma lista preliminar das espécies de Gerromorpha e Nepomorpha no Estado do Rio de Janeiro, sudeste do Brasil, é apresentada. A lista, preparada a partir de cuidadoso estudo da literatura e exame de coleções, inclui 113 espécies de percevejos dulciaquícolas, 37 de gerromorfos e 76 de nepomorfos. As informações disponíveis sobre a distribuição de cada espécie no estado (municípios) são fornecidas. A maior parte das espécies registradas é proveniente da Mata Atlântica brasileira, que hoje encontra-se muito fragmentada

Integrated terrestrial-freshwater planning doubles conservation of tropical aquatic species

Conservation initiatives overwhelmingly focus on terrestrial biodiversity, and little is known about the freshwater cobenefits of terrestrial conservation actions. We sampled more than 1500 terrestrial and freshwater species in the Amazon and simulated conservation for species from both realms. Prioritizations based on terrestrial species yielded on average just 22% of the freshwater benefits achieved through freshwater-focused conservation. However, by using integrated cross-realm planning, freshwater benefits could be increased by up to 600% for a 1% reduction in terrestrial benefits. Where freshwater biodiversity data are unavailable but aquatic connectivity is accounted for, freshwater benefits could still be doubled for negligible losses of terrestrial coverage. Conservation actions are urgently needed to improve the status of freshwater species globally. Our results suggest that such gains can be achieved without compromising terrestrial conservation goals

Pervasive gaps in Amazonian ecological research

Biodiversity loss is one of the main challenges of our time,1,2 and attempts to address it require a clear un derstanding of how ecological communities respond to environmental change across time and space.3,4 While the increasing availability of global databases on ecological communities has advanced our knowledge of biodiversity sensitivity to environmental changes,5–7 vast areas of the tropics remain understudied.8–11 In the American tropics, Amazonia stands out as the world’s most diverse rainforest and the primary source of Neotropical biodiversity,12 but it remains among the least known forests in America and is often underrepre sented in biodiversity databases.13–15 To worsen this situation, human-induced modifications16,17 may elim inate pieces of the Amazon’s biodiversity puzzle before we can use them to understand how ecological com munities are responding. To increase generalization and applicability of biodiversity knowledge,18,19 it is thus crucial to reduce biases in ecological research, particularly in regions projected to face the most pronounced environmental changes. We integrate ecological community metadata of 7,694 sampling sites for multiple or ganism groups in a machine learning model framework to map the research probability across the Brazilian Amazonia, while identifying the region’s vulnerability to environmental change. 15%–18% of the most ne glected areas in ecological research are expected to experience severe climate or land use changes by 2050. This means that unless we take immediate action, we will not be able to establish their current status, much less monitor how it is changing and what is being lostinfo:eu-repo/semantics/publishedVersio