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A point-of-use electrochemical phosphate sensor is achieved with electrodeposited mixed-valence molybdenum oxide on flexible electrodes, enabling selective detection in complex aqueous environments. 

ABSTRACT Extreme droughts are intensifying, yet their impact on temporal variability of grassland functioning and its drivers remains poorly understood. We imposed a 6‐year extreme drought in two semiarid grasslands to explore how drought influences the temporal variability of ANPP and identify potential stabilising mechanisms. Drought decreased ANPP while increasing its temporal variability across grasslands. In the absence of drought, ANPP variability was strongly driven by the dominant plant species (i.e., mass‐ratio effects), as captured by community‐weighted traits and species stability. However, drought decreased the dominance of perennial grasses, providing opportunities for subordinate species to alter the stability of productivity through compensatory dynamics. Specifically, under drought, species asynchrony emerged as a more important correlate of ANPP variability than community‐weighted traits or species stability. Our findings suggest that in grasslands, prolonged, extreme droughts may decrease the relative contribution of mass‐ratio effects versus compensatory dynamics to productivity stability by reducing the influence of dominant species. 

An Individual Development Plan (IDP) is a personal action plan. IDPs can be used to set academic goals, explore career opportunities, and develop skills. During the 2022-23 academic year, we implemented IDPs with two groups in university settings: (1) graduate students and post-docs in the NASA-funded ICE-Five-O project; and (2) undergraduate and graduate students at the University of Hawai‘i. Twenty-four participants and their mentors rated various aspects of the IDP program on a scale of 1 (negative) to 5 (positive). Results were strongly positive, with means ranging from 4.1 to 4.8 for participants and from 4.2 to 4.6 for mentors. Overall, 92% of participants reported that they would recommend IDPs to their peers, and 94% of mentors reported that they would recommend IDPs as a mentoring tool. Although relatively few people (15%, or 31 of 207 eligible trainees) opted to participate, results of the pilot clearly show that those who created an IDP found the experience valuable. Future efforts will focus on maximizing participation. 

Abstract Growing concerns about the global antimicrobial resistance crisis require a better understanding of how antibiotic resistance persists in soil and how antibiotic exposure impacts soil microbial communities. In agroecosystems, these responses are complex because environmental factors may influence how soil microbial communities respond to manure and antibiotic exposure. The study aimed to determine how soil type and moisture alter responses of microbial communities to additions of manure from cattle treated with antibiotics. Soil microcosms were constructed using two soil types at 15, 30, or 45% moisture. Microcosms received biweekly additions of manure from cattle given cephapirin or pirlimycin, antibiotic-free manure, or no manure. While soil type and moisture had the largest effects on microbiome structure, impacts of manure treatments on community structure and individual ARG abundances were observed across varying soil conditions. Activity was also affected, as respiration increased in the cephapirin treatment but decreased with pirlimycin. Manure from cattle antibiotics also increased NH₄⁺and decreased NO₃⁻availability in some scenarios, but the effects were heavily influenced by soil type and moisture. Overall, this work demonstrates that environmental conditions can alter how manure from cattle administered antibiotics impact the soil microbiome. A nuanced approach that considers environmental variability may benefit the long-term management of antibiotic resistance in soil systems.