submitted by MavEme 9 minutes ago
We obtained radiometric data from a public-domain archive maintained by Natural Resources Canada and processed them to produce a ternary image for a portion of the Cariboo region. A field program was used to evaluate what information could be reliably inferred from the available data. This initia...
submitted by OlivLer 1 hour ago
Native species might be able to persist in the face of a detrimental exotic invader by occupying refuge habitats where the exotic is not successful. These refuges might then provide demographic subsidies that enhance persistence of the native species in areas of coexistence with the exotic specie...
submitted by leatimogaoxti 1 hour ago
Parasitoid acceptance of host individuals that differ in suitability is dynamic, varying with physiological state and experience. Female parasitoids with high egg loads and low life expectancy (i.e. time limited) are more willing to accept hosts with low suitability for progeny development than f...
submitted by extrico 2 hours ago
Larvae of the moth Cydalima perspectalis are specialized on box trees (Buxus spp.). Native to eastern Asia, the moth has been introduced to Europe in 2007 and is nowadays causing severe damage to box trees in private and public gardens, as well as in semi-natural box tree forests. Box trees conta...
submitted by harMonys 4 hours ago
The role of Pleistocene glacial cycles in forming the contemporary genetic structure of organisms has been well studied in China with a particular focus on the Tibetan Plateau. However, China has a complex topography and diversity of local climates, and how glacial cycles may have shaped the subt...
submitted by obdole3113 4 hours ago
Elicitin-mediated acquisition of plant sterols is required for growth and sporulation of Phytophthora spp. This study examined the interactions between elicitins, sterols, and tannins. Ground leaf tissue, sterols, and tannin-enriched extracts were obtained from three different plant species (Cali...
submitted by RolandDayt 4 hours ago
Chemical information mediates species interactions in a wide range of organisms. Yet, the effect of chemical information on population dynamics is rarely addressed. We designed a spatio-temporal parasitoid—host model to investigate the population dynamics when both the insect host and the paras...
submitted by gaodolapi 6 hours ago
When studying senescence in wildlife populations, we are often limited by the sparseness of the available information on the ages of the individuals under study. Additionally, heterogeneity between individuals can be substantial. Ignoring this heterogeneity can lead to biased estimates of the pop...
submitted by warsame 6 hours ago
Brazilein, a bioactive compound isolated from Caesalpinia sappan L., has long been used in oriental folk medicines. Cancer metastasis is a primary cause of cancer death. However, the anti-metastatic effects of brazilein remain elusive. In this study, we found that brazilein inhibited human breast...
submitted by motheldi 9 hours ago
Agricultural intensification has caused significant declines in biodiversity. Agri-environmental schemes (AES), including organic farming, are thought to benefit biodiversity. However, under similar production conditions and in comparable locations and schemes, farms are not managed in the same w...
submitted by JavieRam 12 hours ago
Although constituting more than 100,000 described species, protists are virtually ignored within the arena of biodiversity conservation. One reason is the widespread belief that the majority of protists have cosmopolitan distributions, in contrast to the highly hetereogenous biogeography of the â...
submitted by EvanKenn 13 hours ago
Chemical protection of plants against herbivory is a well-studied phenomenon. However, chemical protection of floral rewards remains relatively unexplored. As with herbivore–plant interactions, toxic rewards may impact generalist and specialist foragers in different ways.This study focuses on t...
submitted by VincBron 13 hours ago
Phytoplankton exudates are major source of dissolved organic matter (DOM) in the Sea. We examined the absorption and fluorescence characteristics of Tetraselmis spp, Cylindrotheca closterium and Odontella aurita exudates in an axenic culture experiment. The objective was to test the ability of ph...
submitted by drrlawry 15 hours ago
Predicted reductions of cool-season rainfall may expand and accelerate drought-induced plant mortality currently unfolding across the Southwest US. To assess how repeated plant mortality affects ecosystem functional attributes, we quantified net ecosystem CO2 exchange (NEE), ecosystem respiration...
submitted by LucianSt 15 hours ago
The scarcity of water characterising drylands forces vegetation to adopt appropriate survival strategies. Some of these generate water–vegetation feedback mechanisms that can lead to spatial self-organisation of vegetation, as it has been shown with models representing plants by a density of bi...