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Authentic learning, defined as direct engagement with real-world problems, data, and professional practices, is widely cited for improving STEMM students’ knowledge, skills, and retention. Course-based undergraduate research experiences (CUREs) and research experiences for undergraduates (REUs) increase students’ understanding of scientific content and processes, and STEMM career interest. However, these experiences are often resource and time intensive. As a result, many students are unable to access these formative experiences due to differences in ability, financial constraints, or family and caregiving responsibilities. Open educational resources can broaden access to authentic learning, especially for place-based learning in tropical field settings. We introduce a new concept of free interactive research-based experiences (FIREs) as a category of instructional design that has many of the benefits of CUREs and REUs while removing many barriers. As a case study, we present the Online Content for Experiential Learning of Tropical Systems (OCELOTS) network and their open-access modules that are grounded in peer-reviewed tropical biology research. Hosted on the Gala platform, these modules are adaptable, multilingual, and integrative; they feature real data sets, visualizations, and simulations for instructors to implement authentic learning without specialized infrastructure. Instructor feedback from OCELOTS module implementations highlights gains in student engagement, conceptual understanding, and appreciation for real-world science. We argue that FIREs complement existing authentic learning frameworks and should be part of a diverse set of authentic learning opportunities used by educators. As a community, we should prioritize the assessment of short- and long-term impacts of FIREs on student outcomes to guide further adoption and funding support. 

Open educational resources (OERs) contain authentic materials that benefit students, but few studies have focused on the benefits to authors of OERs. This gap needs attention considering the challenges that OER authors face, given their commitments to multiple professional activities while also being motivated to take part in OER development. It is critical to understand what benefits authors receive, to help in the continued development of these valuable educational tools. To this end, we investigated what benefits a specific group of researcher-educators perceived from investing their limited time and energy to design, create, and share authentic OERs in the OCELOTS (Online Content for Experiential Learning of Tropical Systems) Research Coordination Network in Undergraduate Biology Education. Our study was based on conceptual frameworks for teaching and learning, communities of practice, and self-determination theory. We used qualitative data from a survey specifically designed to address the question of benefits perceived by OER authors, complemented with quantitative and qualitative data from existing internal evaluations of this network. In a content-analysis framework, we analyzed the open-ended responses to identify broader themes emerging about author benefits. OER authors reported improved pedagogical practice, increased visibility of research and outreach efforts, professional rewards, and increased collaborations. Authors reported gains in pedagogical knowledge and personal fulfillment as benefits that they received, along with satisfaction from contributing to their discipline and society in general. While benefits around improving pedagogical practice was the richest theme, creation of modules also generated new collaborations and helped strengthen and broaden authors’ professional networks. In particular, the sense of belonging to and building the community was a significant benefit, providing implications for how to support future OER development and the critical role of peer networks. We discuss connections across these themes and compare our results with related previous studies. These results indicate that sustained investment in intentionally designed, interdisciplinary networks can generate substantial and diverse benefits for the educators and researchers who create these resources. Open Research Statement The de-identified data associated with this manuscript will be permanently archived in Zenodo, upon the acceptance of the manuscript. 

Abstract Seed dormancy in plants can have a significant impact on their ecology. Recent work by Rojas-Villa and Quijano-Abril (2023) classified the seed dormancy class in 14 plant species from the Andean forests of Colombia by using germination trials and several microscopy techniques to describe seed anatomy and morphology. The authors conclude thatCecropiaspecies have both physical and physiological dormancy (of which they call physiophysical dormancy) based on seed morphology and mean germination times of over 30 days. Here, we present seed permeability and germination data from neotropical pioneer tree species:Ochroma pyramidale,Cecropia longipes, andCecropia insignis, as well asCecropia peltata(present in Rojas-Villa and Quijano-Abril, 2023), to demonstrate thatCecropiaspecies do not exhibit dormancy and also have high levels of seed permeability. We find that the mean germination time for all threeCecropiaspecies in our study was less than 30 days. This suggests a need for reporting the conditions in which germination trials take place to allow for comparability among studies and using seed permeability tests to accurately identify the physical dormancy class of seeds. Further, we present data from the literature that suggests that dormancy is not a requirement for seed persistence in the seed bank. 

1. Formal undergraduate research experiences (UREs) have provided students with authentic research experiences in ecology for decades, but accessibility to these resources is inherently limited, as evidenced during the COVID‐19 pandemic. Moreover, UREs often do not reflect the diversity of locations of current ecological publications. Open online educational resources (OERs) can address the need for more accessible resources, but they usually rely on the curation of static content and can be functionally restricted by a lack of pedagogical instructions. 2. The OCELOTS network (Online Content for Experiential Learning of Tropical Systems) addresses these gaps by shifting the OER model from static curation to a dynamic, scalable, incubator matrix. Rather than serving as a passive repository for disconnected teaching files, OCELOTS acts as a structured workshop and collaborative peer review network where active researchers translate their own peer‐reviewed primary literature into modular, narrative‐driven OER case studies, hereafter referred to as ‘modules’. 3. A combination of factors contributes to OCELOTS' novelty. (a) Researchers who published the study are part of the module‐creating team. (b) Modules are place‐based and globally networked and designed for any type of instructional setting. (c) Peer review is conducted through a living collaborative model rather than a static editorial review. (d) Embedded real‐time data tools use applications that incorporate actual field datasets collected by the module authors. (e) Instructors publish implementation plans and teaching notes for using modules in undergraduate courses. (f) The design is explicitly decolonial in its multilingual accessibility. 4. We summarize the various ways in which 29 OCELOTS modules, representing the work of 68 authors in various tropical field sites in 12 countries, have been created, implemented, adapted, and disseminated. We reflect on how this network has enabled these activities that portray a range of scientific content, processes, and methods in an immersive way. 5. Moving beyond the limitations of standard static text portals, the OCELOTS network presents a highly transferable methodological framework. It demonstrates how global research coordination networks can actively create, review, and implement high‐quality interactive open materials that democratize complex biological data across diverse institutional types around the world. 

Abstract There is growing recognition that tropical forest restoration is key for sequestering carbon and enhancing ecosystem resilience. Soils, roots, and soil biota are central to ecosystem function and services, but belowground recovery is largely overlooked in restoration monitoring frameworks. Here, we outline current understanding of the links between above- and belowground recovery in tropical forests by examining how belowground properties before and after intervention influence recovery; by evaluating whether aboveground recovery can serve as a proxy for belowground dynamics; and by proposing a blueprint for monitoring dynamic soil physical (bulk density, aggregate stability), chemical (organic matter or carbon, pH), and biological properties (decomposition rate, macrofauna abundance) in resource-constrained projects. Although we highlight some aboveground proxies for assessing belowground recovery, a better understanding of relationships between above- and belowground indicators across diverse restoration interventions remains essential. Overall, we provide an actionable path toward integrating belowground recovery into restoration design and assessment. 

Abstract Tropical ecosystems face escalating global change. These shifts can disrupt tropical forests' carbon (C) balance and impact root dynamics. Since roots perform essential functions such as resource acquisition and tissue protection, root responses can inform about the strategies and vulnerabilities of ecosystems facing present and future global changes. However, root trait dynamics are poorly understood, especially in tropical ecosystems. We analyzed existing research on tropical root responses to key global change drivers: warming, drought, flooding, cyclones, nitrogen (N) deposition, elevated (e) CO₂, and fires. Based on tree species‐ and community‐level literature, we obtained 266 root trait observations from 93 studies across 24 tropical countries. We found differences in the proportion of root responsiveness to global change among different global change drivers but not among root categories. In particular, we observed that tropical root systems responded to warming and eCO₂by increasing root biomass in species‐scale studies. Drought increased the root: shoot ratio with no change in root biomass, indicating a decline in aboveground biomass. Despite N deposition being the most studied global change driver, it had some of the most variable effects on root characteristics, with few predictable responses. Episodic disturbances such as cyclones, fires, and flooding consistently resulted in a change in root trait expressions, with cyclones and fires increasing root production, potentially due to shifts in plant community and nutrient inputs, while flooding changed plant regulatory metabolisms due to low oxygen conditions. The data available to date clearly show that tropical forest root characteristics and dynamics are responding to global change, although in ways that are not always predictable. This synthesis indicates the need for replicated studies across root characteristics at species and community scales under different global change factors. 

This dataset is a compilation of tropical root traits data in response to different global changes in tropical sites, considering 23.50N and S as latitudinal boundaries. The global changes considered are warming, drought, flooding, cyclones, nitrogen addition, CO2 fertilization, and fire. This dataset contains 266 root trait observations from 93 studies across 24 tropical countries. The full citation from where the data was taken from is provided in the dataset, as well as the global change, the ecosystem type, location, coordinates, the root traits measured, and the direction of their response after the global change. Additional information such as the duration of the experiment, the intensity of the global change, the soil layers from where the roots were collected, the root orders, and the type of experiment are also shown. We obtained this dataset by performing a systematic literature review on Web of Science using standardized keywords in English, Spanish, and Portuguese (Yaffar, Lugli et al. in press). 

Carbon cycle perturbations in high-latitude ecosystems associated with rapid warming can have implications for the global climate. Belowground biomass is an important component of the carbon cycle in these ecosystems, with, on average, significantly more vegetation biomass belowground than aboveground. Large quantities of dead root biomass are also in these ecosystems owing to slow decomposition rates. Current understanding of how live and dead root biomass carbon pools vary across highlatitude ecosystems and the environmental conditions associated with this variation is limited due to the labor- and time-intensive nature of data collection. To that end, we examined patterns and factors (abiotic and biotic) associated with the variation in live and dead fine root biomass (FRB) and FRB carbon (C), nitrogen (N) and phosphorus concentrations for 23 sites across a latitudinal gradient in Alaska, spanning both boreal forest and tundra biomes. We found no difference in the live or dead FRB variables between these biomes, despite large differences in predominant vegetation types, except for significantly higher live FRB C:N ratios in boreal sites. Soil C:N ratio, moisture, and temperature, along with moss cover, explained a substantial portion of the dead:live FRB ratio variability across sites. We find all these factors have negative relationships with dead FRB, while having positive or no relationship with live FRB. This work demonstrates that FRB does not necessarily correlate with aboveground vegetation characteristics, and it highlights the need for finer-scale measurements of abiotic and biotic factors to understand FRB landscape variability now and into the future. 

Vegetation processes are fundamentally limited by nutrient and water availability, the uptake of which is mediated by plant roots in terrestrial ecosystems. While tropical forests play a central role in global water, carbon, and nutrient cycling, we know very little about tradeoffs and synergies in root traits that respond to resource scarcity. Tropical trees face a unique set of resource limitations, with rock-derived nutrients and moisture seasonality governing many ecosystem functions, and nutrient versus water availability often separated spatially and temporally. Root traits that characterize biomass, depth distributions, production and phenology, morphology, physiology, chemistry, and symbiotic relationships can be predictive of plants’ capacities to access and acquire nutrients and water, with links to aboveground processes like transpiration, wood productivity, and leaf phenology. In this review, we identify an emerging trend in the literature that tropical fine root biomass and production in surface soils are greatest in infertile or sufficiently moist soils. We also identify interesting paradoxes in tropical forest root responses to changing resources that merit further exploration. For example, specific root length, which typically increases under resource scarcity to expand the volume of soil explored, instead can increase with greater base cation availability, both across natural tropical forest gradients and in fertilization experiments. Also, nutrient additions, rather than reducing mycorrhizal colonization of fine roots as might be expected, increased colonization rates under scenarios of water scarcity in some forests. Efforts to include fine root traits and functions in vegetation models have grown more sophisticated over time, yet there is a disconnect between the emphasis in models characterizing nutrient and water uptake rates and carbon costs versus the emphasis in field experiments on measuring root biomass, production, and morphology in response to changes in resource availability. Closer integration of field and modeling efforts could connect mechanistic investigation of fine-root dynamics to ecosystem-scale understanding of nutrient and water cycling, allowing us to better predict tropical forest-climate feedbacks.