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Low Abundance of Regular Pollinators and Indirect Competitive Effects of Dominant Small Bees Negatively Affect Passion Fruit Pollination in Smallholder Croplands.
Neotrop Entomol
January 2025
Depto de Ecologia, Instituto de Ciências Biológicas, Univ de Brasília (UnB), Brasília, DF, Brazil.
Land-use changes have led to natural habitat loss and fragmentation, favoring the occurrence of dominant bee species in agroecosystems. This has raised concerns on the dominance effects in pollination-dependent crops like passion fruits (Passiflora edulis Sims) in tropical regions. That is because dominant bee species might overlap their foraging time with regular pollinators, potentially impairing crop yield.
View Article and Find Full Text PDFTurnover in species composition through time is a dominant form of biodiversity change, which has profound effects on the functioning of ecological communities. Turnover rates differ markedly among communities, but the drivers of this variation across taxa and realms remain unknown. Here we analyse 42,225 time series of species composition from marine, terrestrial and freshwater assemblages, and show that temporal rates of turnover were consistently faster in locations that experienced faster temperature change, including both warming and cooling.
View Article and Find Full Text PDFPivotal roles of Plasmodium falciparum lysophospholipid acyltransferase 1 in cell cycle progression and cytostome internalization.
Commun Biol
January 2025
Department of Cellular Architecture Studies, Division of Shionogi Global Infectious Diseases Division, Institute of Tropical Medicine (NEKKEN), Nagasaki University, Nagasaki, Japan.
The rapid intraerythrocytic replication of Plasmodium falciparum, a deadly species of malaria parasite, requires a quick but constant supply of phospholipids to support marked cell membrane expansion. In the malarial parasite, many enzymes functioning in phospholipid synthesis pathway have not been identified or characterized. Here, we identify P.
View Article and Find Full Text PDFOxidation state of bioavailable dissolved organic matter influences bacterioplankton respiration and growth efficiency.
Commun Biol
January 2025
Marine Science Institute/Department of Ecology, Evolution and Marine Biology, University of California, Santa Barbara, CA, USA.
Oxygen consumption by oceanic microbes can predict respiration (CO production) but requires an assumed respiratory quotient (RQ; ΔO/ΔCO). Measured apparent RQs (ARQs) can be impacted by various processes, including nitrification and changes in dissolved organic matter (DOM) composition, leading to discrepancies between ARQ and actual RQ. In DOM remineralization experiments conducted in the eastern North Atlantic Ocean, ARQs averaged 1.
View Article and Find Full Text PDFInfluence of interface sawtooth angle on the shear behavior of cement mortar coal composite structure.
Sci Rep
January 2025
College of Mining Engineering, Taiyuan University of Technology, Taiyuan, 030024, Shanxi Province, China.
The influence of interface morphology is of great importance on the shear behavior of the cement mortar-coal composite structure (CCCS) widely distributed in underground mines. In the present research, both the macroscopic- and microscopic failure characteristics of the CCCS with variable interface sawtooth angles (i.e.
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