Results 131 to 140 of about 15,091,535 (303)
Cellular basis for blade splitting in bull kelp, Nereocystis luetkeana
American Journal of Botany, EarlyView.Abstract Premise Blade splitting in bull kelp, Nereocystis luetkeana is central to thallus development and function, yet the cellular basis of this process remains poorly understood. Two historical models proposed contrasting mechanisms: One attributes blade separation primarily to programmed cell death, whereas the other suggests mechanical tearing ...
Alana K. Breitkreutz, Patrick T. Martone
wiley +1 more source
Optimal Economic Landscapes with Habitat Fragmentation Effects [PDF]
Habitat fragmentation is widely considered a primary threat to biodiversity. This paper develops a theoretical model of land use to analyze the optimal conservation of landscapes when land quality is spatially heterogeneous and wildlife habitat is ...
Wu, JunJie, Lewis, David J.
core
American Journal of Botany, EarlyView.Abstract Premise Given the threats of climate change, we investigated the impact of high temperatures separately and in combination with reduced soil water on leaf heat tolerance for five oaks (Fagaceae) with overlapping ranges in southern California, USA: Quercus agrifolia and Q. chrysolepis (evergreen species), Q. douglasii and Q.
Casey D. Wisely +7 more
wiley +1 more source
OryxSpecies–environment relationships are often studied at large spatial scales, but effective conservation requires an understanding of local-scale environmental drivers and pressures.
Helen D. Slater +7 more
doaj +1 more source
Avian Conservation and EcologyBlack-backed Woodpecker ( Picoides arcticus ) is known to benefit from pulse-resource disturbances in boreal forest for example, by colonizing recently burned habitats.
Myriam Lemieux +2 more
doaj +1 more source
Ecological Scale and Habitat Use
Ecology, 1987 Population density can respond to habitat at different scales. If habitat selection occurs as a consequence of resource exploitation, the density of fine—grained consumers should reflect microhabitat variation. But if habitat use is controlled by a variety of selective pressures, it is no longer apparent whether density should respond to micro— or ...
openaire +1 more source
Angewandte Chemie International Edition, EarlyView.Myxoglucamide A—a novel glycolipopeptide isolated from myxobacteria—was synthesized, and activity‐based protein profiling identified aldo‐keto reductase 1C3 (AKR1C3) as its main target in human cells. Structure‐activity relationship studies, together with biophysical characterization and X‐ray crystallography, elucidated the structural basis of AKR1C3 ...
Thomas Siemon +9 more
wiley +1 more source
Modelling habitat preference and estimating the spatial distribution of Australian Sea Lions (Neophoca cinerea); "A first exploration " [PDF]
, 2008 Managing the Australian sea lion (Neophoca cinerea) population and mitigating its interactions with commercial fisheries, requires an understanding of their spatial distribution and habitat preference at sea. Numerous wildlife telemetry devices have been
Aarts, G.M., Brasseur, S.M.J.M.
core
Seasonal Fluctuations of Plastochromanol‐8 and α‐Tocopherol Amounts in the Leaves of Cecropia Trees
Journal of the American Oil Chemists' Society, EarlyView.ABSTRACT Plastochromanol‐8 (PC‐8) is a homologue of γ‐tocotrienol with a longer side chain (eight instead of three isoprene units) and therefore also a representative of the tocochromanol (vitamin E) group. PC‐8 has been determined in various plants and seeds, with Cecropia sp. leaves showing unusually high levels.
Rosalie Ormos, Jörg Rau, Walter Vetter
wiley +1 more source
Drone-Based Detection and Classification of Greater Caribbean Manatees in the Panama Canal Basin
DronesThis study introduces a novel, drone-based approach for the detection and classification of Greater Caribbean Manatees (Trichechus manatus manatus) in the Panama Canal Basin by integrating advanced deep learning techniques.
Javier E. Sanchez-Galan +5 more
doaj +1 more source