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Fish Assemblage Shift Following Abrupt Seagrass Loss in a Southwest Florida Tidal CreekNARA Subscribed
Phase shifts can occur in ecosystems because of external stressors. Such transitions from one state (e.g., clear water, seagrass) to another (e.g., phytoplankton blooms, bare substrate) continue to be documented worldwide. In estuaries, stressors related to urban and suburban development are often implicated in phase shifts, including altered hydrology and eutrophication. Tidal creeks may be especially prone to phase shifts as...
Muscle architectural and performance adaptations following an 8-week sprint-focused training interventionNARA Subscribed
Muscle fascicle length is a key determinant of sprint performance, with lengthening adaptations observed following eccentric strength training or combined sprint and resistance interventions. However, whether sprint-focused training can induce meaningful architectural adaptations, independent of concurrent sport-related training, remains unclear. Fourteen participants (10 female, 4 male; age 21.6 ± 3.3 years; body mass 68.0 ±...
Background and aims Biological nitrogen fixation (BNF) supplies much of soybean ( Glycine max (L.) Merr.) nitrogen (N) demand, but reported fixation rates vary widely, leading to uncertainty in the soybean N cycle. We quantified whole-plant soybean BNF and N allocation using long-term 15 N labeling to assess whether BNF can offset grain N removal in a high-yielding system, and to quantify root contributions to fixed N. Methods...
Anthropogenic Effects, Not Climatic Factors, Are Correlated With Holocene Population Expansion of an Insular Bee FaunaNARA Subscribed
Aim Remote island systems with small landmasses and reliable estimates of human occupancy can be ideal models to disentangle the roles of global climatic changes and local human occupation on biota. Here, we explored this with demographic reconstructions of native, ground‐nesting bees with non‐specialised floral visitation habits to infer changes in effective population size ( N e ). Location Viti Levu, Fiji, South West Pacifi...
Blacktip sharks ( Carcharhinus limbatus ) are a circumglobal species that rely on nearshore nursery habitats during their early years. Movement patterns and habitat use of blacktip sharks in the Hawaiian Islands is poorly understood, and no nursery habitats have been discovered within Hawai’i. For this study, juvenile blacktip sharks (n = 29) were caught and tagged in Hilo Bay, Hawai’i, USA with acoustic transmitters. Tracking...
Marine Isotope Stage 4 glaciation in northern England, UK: Evidence from Victoria Cave, North YorkshireNARA Subscribed
Victoria Cave, north Yorkshire, England, contains a long sequence of Pleistocene clastic sediments and calcite flowstones. Earlier work, using U–Th dating, established that the flowstone units formed in interglacial stages corresponding to Marine Isotope Stages (MIS) 13, 11, 9, 7 and 5. The intervening laminated sediments were therefore assigned to glacial stages (MIS 12, 10, 6 and 2) and regarded as rhythmites that settled fr...
A salinity gradient mediates plant diversity–function–stability relationships across a coastal marsh landscapeNARA Subscribed
Ecosystem function and stability are often positively related to species richness in experiments, but in nature, abiotic gradients may over‐ride or obscure the effects of richness on function and stability. In addition, community stability may be driven by distinct mechanisms along diversity or abiotic gradients and exhibit different responses to differing degrees of variability in an abiotic condition. We explored relationshi...