The structure of aquatic invertebrate communities in Amazonian streams is influenced by substrate type, water velocity, and resource availability. In this study, we examined the diet and habitat associations of Odonata larvae across different substrate types in “ terra firme ” streams of Central Amazonia to better understand their trophic interactions and microhabitat use. Sampling was conducted in the Ducke and Uatumã reserve...

Monitoring tropical streams uses benthic macroinvertebrates; however, identification constraints and long processing times limit its application. Taxonomic surrogacy has been proposed, but its ecological validity is uncertain. Ephemeroptera are used as bioindicators because their nymphs are highly sensitive to environmental change. However, nymph identification is often limited by fragile structures, whereas adults retain stab...

Food webs in small, forested streams rely heavily on litterfall for energy, but the role of fruitfall remains understudied. We conducted a field experiment comparing the decomposition of two fruits with hard pericarps ( Astrocaryum vulgare and Bactris gasipaes ) and five with soft pericarps ( Genipa americana , Mangifera indica [non-native], Mauritia flexuosa , Syzygium cumini [non-native], and Talisia esculenta ). Whole and c...

Decomposition of plant litter is a key ecological process in streams, whose contribution to the global carbon cycle is large relative to their extent on Earth. We examined the mechanisms underlying the temperature sensitivity (TS) of instream decomposition and forecast effects of climate warming on this process. Comparing data from 41 globally distributed sites, we assessed the TS of microbial and total decomposition using lit...

Motivation Freshwater ecosystems have been heavily impacted by land‐use changes, but data syntheses on these impacts are still limited. Here, we compiled a global database encompassing 241 studies with species abundance data (from multiple biological groups and geographic locations) across sites with different land‐use categories. This compilation will be useful for addressing questions regarding land‐use change and its impact...

Aim Insects are one of the least studied taxa, with most species lacking basic ecological and biogeographical information. This problem is particularly acute in the tropics, where low sampling effort hampers accurate estimates of species richness at scale and potentially confounds efforts to identify the drivers of biogeographical gradients. Here, we evaluate the quality of the data on the distribution and diversity of odonate...

Motivation Aquatic insects comprise 64% of freshwater animal diversity and are widely used as bioindicators to assess water quality impairment and freshwater ecosystem health, as well as to test ecological hypotheses. Despite their importance, a comprehensive, global database of aquatic insect occurrences for mapping freshwater biodiversity in macroecological studies and applied freshwater research is missing. We aim to fill t...