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Welcome to the Pubget Medical Subject Headings (MESH) browser. Click on a topic or subtopic below to explore related papers. In the gold box is the most recent paper about the current MESH term, and below are 20 related papers.
Ecosystem (4):
Recent article
Ecosystem
Abstract
The relative abundance of nitrate (N) over phosphorus (P) has increased over the period since 1980 in the marginal seas bordering the northwestern Pacific Ocean, located downstream of the populated and industrialized Asian continent. The increase in N availability within the study area was mainly dri...
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PMID: 21940860
PDF is available here.
PDF is available here.
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Abstract
We show that the authors miscalculated deficit, that the apparent decline in species' elevations is likely a consequence of geographic biases, and that unlike temperature changes, precipitation changes should not be expected to cause coordinated directional shifts in species' elevations....
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PMID: 21998371
PDF is available here.
PDF is available here.
Abstract
We analyzed data on the distribution of tree cover in Africa, Australia, and South America to reveal strong evidence for the existence of three distinct attractors: forest, savanna, and a treeless state. Empirical reconstruction of the basins of attraction indicates that the resilience of the states...
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PMID: 21998390
PDF is available here.
PDF is available here.
Abstract
Diet changes are considered key events in human evolution. Most studies of early hominin diets focused on tooth size, shape, and craniomandibular morphology, as well as stone tools and butchered animal bones. However, in recent years, dental microwear and stable isotope analyses have...
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PMID: 21998380
PDF is available here.
PDF is available here.
Abstract
We argue that the results are limited in scope to just a handful of woody species in one part of the state and are confounded by methodological errors....
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PMID: 21998369
PDF is available here.
PDF is available here.
Abstract
Abstract
Abstract
I contend that there is no support for a general downhill shift after correcting for this geographic bias....
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PMID: 21998370
PDF is available here.
PDF is available here.
Abstract
We use tree cover, climate, fire, and soils data sets to show that tree cover is globally discontinuous. Climate influences tree cover globally but, at intermediate rainfall (1000 to 2500 millimeters) with mild seasonality (less than 7 months), tree cover is bimodal, and only fire differentiates bet...
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PMID: 21998389
PDF is available here.
PDF is available here.
American Naturalist (178)S1 2011
Abstract
We assess these theories in an analysis of the twofold decline in bird species richness along the Himalayas from the southeast to the northwest. The presence of fewer species in the northwest is entirely due to a steep decline in the number of forest species; species occupying more open habitats sho...
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PMID: 21956095
PDF is available here.
PDF is available here.
Abstract
Abstract
Abstract
We study this question using a model of prey defenses in which prey can induce any level of defense conditional on cues that are informative of local predator density. The model incorporates a trade-off between defense expression and fecundity and feedback between the defense level of prey and preda...
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PMID: 21828995
PDF is available here.
PDF is available here.
Zoological Science (28)9 2011
Abstract
We used antibodies raised against AQP-h2 and AQP-h3 to characterize the expression of homologous AQPs in the skin of two species of toads that inhabit arid desert regions of southwestern North America. Western blot analysis of proteins gave positive results for AQP-h2-like proteins in the pelvic ski...
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PMID: 21882955
PDF is available here.
PDF is available here.
Abstract
We tested the hypothesis that a mechanical vector was responsible for these multifocal lesions. Four presumably non-resistant colonies were experimentally manipulated. Tissue and microbial assemblages were taken from diseased tissue and injected into healthy-looking tissue. Seawater injections were...
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PMID: 21991668
PDF is available here.
PDF is available here.
Abstract
Abstract
We show that bedrock comprises a hitherto overlooked source of ecologically available N to forests. We report that the N content of soils and forest foliage on N-rich metasedimentary rocks (350-950 mg N kg(-1)) is elevated by more than 50% compared with similar temperate forest sites underlain...
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PMID: 21886160
PDF is available here.
PDF is available here.
Abstract
Abstract
We show here that the symbionts of the hydrothermal vent mussel Bathymodiolus from the Mid-Atlantic Ridge use hydrogen to power primary production. In addition, we show that the symbionts of Bathymodiolus mussels from Pacific vents have hupL, the key gene for hydrogen oxidation. Furthermore, the sym...
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PMID: 21833083
PDF is available here.
PDF is available here.
Abstract
We present such an analysis using demographic data collected during the interval 1978-1996 for six populations of western terrestrial garter snakes (Thamnophis elegans) from two evolutionarily divergent ecotypes. Three replicate populations from a slow-living ecotype, found in mountain meadows of no...
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PMID: 21905432
PDF is available here.
PDF is available here.
Abstract
We use penalized splines within a Bayesian state-space modeling framework to estimate and visualize survival probability in two dimensions. The approach is flexible in that no parametric form for the relationship between survival and coordinates need be specified a priori. To illustrate our method,...
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PMID: 21905433
PDF is available here.
PDF is available here.
Abstract
We applied capture-mark-recapture analysis to 25 years of monthly trapping data from a fluctuating prairie vole Microtus ochrogaster population in Illinois, USA, to estimate realized population growth rates and associated vital rates (survival and recruitment) and modeled them as a function of vole...
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PMID: 21905434
PDF is available here.
PDF is available here.
Abstract
Zoological Science (28)8 2011
Abstract
We monitored food intake of P. gigas in a stable environment in an aquarium over a 6-year period and analyzed their feeding rhythm and fasting periods. The daily food intake for each fish was recorded from 18 June 2004 to 17 June 2010. The feeding rhythm or pattern was determined by the fast Fourier...
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PMID: 21800994
PDF is available here.
PDF is available here.
Abstract
Mosquito were surveyed (Nov. 2009 - March 2010) in El Ismailia Governorate. Nine species were reported: Culex pipiens, Cx. perexiguus, Cx. antennatus, Anopheles tenebrosus, An. pharoensis, An. multicolor, Ochlerotatus detritus, Oc. caspius and Culiseta longiareolata. Culex pipiens wa...
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PMID: 21980773
PDF is available here.
PDF is available here.
Virus Research (159)2 2011
Abstract
Abstract
With rapid population growth and rural to-urban migration in many Chinese cities, a large amount of natural lands have been converted to urban and agricultural lands recently. During this process of land conversion, economic development and quality of life improvement are considered...
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PMID: 22013594
PDF is available here.
PDF is available here.
Molecular Ecology (20)16 2011
Abstract
Humans are notorious for disturbing terrestrial ecosystems worldwide, especially those that are in close proximity to urban areas. This disturbance has involved the accumulation of various types of chemical pollutants, of either agricultural or industrial origins, in both soil and wa...
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PMID: 21977500
PDF is available here.
PDF is available here.
Abstract
We report on a recent and severe outbreak of the viciously biting and day-active mosquito Anopheles plumbeus Stephens, 1828, that is caused by a habitat shift toward human-created habitats. Although historic data indicate that the species was previously reported to be rare in Belgium and confined to...
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PMID: 21845955
PDF is available here.
PDF is available here.
Ecological Applications (21)5 2011
Abstract
We propose that three conditions should be met before implementing assisted migration in reforestation programs: (1) evidence of a climate-related adaptational lag, (2) observed biological impacts, and (3) robust model projections to target assisted migration efforts. In a case study of aspen (Popul...
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PMID: 21830704
PDF is available here.
PDF is available here.
Abstract
Two studies were conducted to determine the effect of habitat selection and trap placement on catches of Scolytidae and Cerambycidae (Coleoptera) in northeastern U.S. forests. In a nonreplicated case study, four habitat types--closed canopy hardwood stand, closed canopy conifer stand, a low-intensity...
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PMID: 21735907
PDF is available here.
PDF is available here.
Abstract
We conducted a laboratory experiment to examine the effects of La Niña and El Niño conditions on the health and survival of red abalone from SMI. Six replicate tanks per treatment, each containing six abalone, were subjected to one of the following three temperature regimes (treatments): Bodega Ba...
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PMID: 21834330
PDF is available here.
PDF is available here.
Abstract
Larval control is an integral part of malaria vector management in Ethiopia and elsewhere. For effective larval control, a sound understanding of the factors responsible for spatio-temporal variation in larval production is essential. A study was thus conducted to characterize larval habitats of anop...
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PMID: 21715730
PDF is available here.
PDF is available here.
Abstract
Folia morphologica (70)2 2011
Abstract
The olfactory epithelium of Scatophagus argus (Linnaeus) was investigated by light and scanning electron microscopy. The elongated olfactory organ is made up of 20 to 22 primary lamellae arranged on both sides of the narrow median raphe. Sensory and non-sensory regions are located separately on each...
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PMID: 21630226
PDF is available here.
PDF is available here.
Hereditas (Beijing) (33)5 2011
Abstract
Transgenic technique provides a new way for fish breeding. Stable lines of growth hormone gene transfer carps, salmon and tilapia, as well as fluorescence protein gene transfer zebra fish and white cloud mountain minnow have been produced. The fast growth characteristic of GH gene transgenic fish wil...
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PMID: 21586396
PDF is available here.
PDF is available here.
Abstract
We argue that extending this formalised concept of importance to other aspects of ecology would be beneficial. We discuss approaches for measuring importance, and provide examples where explicit acknowledgement of this simple concept might promote understanding and resolve debate....
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PMID: 21550129
PDF is available here.
PDF is available here.
Abstract
Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences (369)1943 2011
Abstract
We calculate the uncertainty in the flux owing to uncertainty in model parameters. The uncertainty is large and is dominated by the impact of soil moisture on heterotrophic respiration. We show that this uncertainty can be greatly reduced by constraining the model parameters with two decades of atmo...
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PMID: 21502169
PDF is available here.
PDF is available here.
Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences (369)1943 2011
Abstract
The African continent contributes one of the largest uncertainties to the global CO(2) budget, because very few long-term measurements are carried out in this region. The contribution of Africa to the global carbon cycle is characterized by its low fossil fuel emissions, a rapidly increasing populati...
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PMID: 21502175
PDF is available here.
PDF is available here.
Abstract
We report other indirect effects on plants of the mutualism between aphids and ants. We have found that two Lasius ant species, one native and the other invasive, may change the composition of volatile organic compounds (VOCs) of the holm oak (Quercus ilex) blend when they tend the aphid Lachnus rob...
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PMID: 21494087
PDF is available here.
PDF is available here.
Abstract
To compare the bacterioplankton communities in streams exposed to pollution of different types.
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PMID: 21565685
PDF is available here.
PDF is available here.
Tropical biomedicine (28)1 2011
Abstract
Ovitrap surveillance was conducted in methodically selected areas in Bentong, Pahang, Malaysia from June 2008 till December 2009 in order to identify insular sites with stable Aedes aegypti population. Eleven sites were surveyed in Bentong district, Pahang, and one of these locations (N3º33' E101º5...
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PMID: 21602768
PDF is available here.
PDF is available here.
Tropical biomedicine (28)1 2011
Abstract
Twenty-two species of mosquitoes belonging to six genera (Anopheles, Aedeomyia, Aedes, Armigeres, Culex and Mansonia) were collected from eight villages in and around the Chilika lake area, Khurda and Puri Districts from 2006-2007. Greater numbers of the culicines (65.59%) were collected from the are...
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PMID: 21602762
PDF is available here.
PDF is available here.
Zoological Research (32)2 2011
Abstract
We tested three hypotheses commonly invoked to explain aggregated breeding in territorial species (social mate choice, predation, and material resources hypotheses), and found support for the material resources hypothesis, as dispersed individuals were more often associated with tundra habitat patch...
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PMID: 21509958
PDF is available here.
PDF is available here.
Zoological Research (32)2 2011
Abstract
We discuss the impacts on fishes caused by hydropower projects in Lixianjiang, and evaluate effects and problems on the propagation of Parazacco spilurus, Hemibagrus pluriradiatus, Neolissochilus benasi and Semilabeo obscurus. A successful propagation project includes foraging ecology in fields, pon...
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PMID: 21509965
PDF is available here.
PDF is available here.
Abstract
We identify five ways in which substantial advances could be made in the next few years: (i) improving the accessibility and efficiency of biodiversity monitoring data, (ii) quantifying the main determinants of the sensitivity of species to climate change, (iii) incorporating community dynamics into...
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PMID: 21474198
PDF is available here.
PDF is available here.
Abstract
To investigate the history of the medicinal uses, resources, distribution, habitat and population characteristic of Coptis deltoidea, and provide basis for the protection and rational development and utilization of Radix Coptidis Deltoideae.
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PMID: 21809564
PDF is available here.
PDF is available here.
New England Journal of Medicine (364)14 2011
Abstract
Abstract
We analysed the genetic variability of the pea seed proteome of three genotypes over 3 years of cultivation. This revealed that seed protein composition variability was under predominant genetic control, with as much as 60% of the spots varying quantitatively among the three genotypes. Then, by comb...
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PMID: 21433288
PDF is available here.
PDF is available here.
Abstract
Avian Diseases (55)1 2011
Abstract
We compiled 16 environmental variables to assess their correlation with HPAIV-H5N1 occurrences by using a niche-based model called Maxent. We found the virus had the strongest positive association with the human footprint index, as well as the presence of certain types of wetlands and mild temperatu...
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PMID: 21500631
PDF is available here.
PDF is available here.
Abstract
Increasing evidence highlights the role that botanic gardens might have in plant invasions across the globe. Botanic gardens, often in global biodiversity hotspots, have been implicated in the early cultivation and/or introduction of most environmental weeds listed by IUCN as among the worst invasive...
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PMID: 21353721
PDF is available here.
PDF is available here.
Ecological Applications (21)2 2011
Abstract
We assessed whether the presence of an invasive shrub, Amur honeysuckle, Lonicera maackii, affects oviposition by treehole mosquitoes, Aedes triseriatus, a primary vector of La Crosse virus in the United States. Oviposition significantly decreased with increasing density of L. maackii. Moreover, our...
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PMID: 21563565
PDF is available here.
PDF is available here.
Ecological Applications (21)2 2011
Abstract
We collected over 5300 spiders across multiple transects in the Bavarian National Park (Germany) using pitfall traps. We examined spider community characteristics (species richness, the Shannon index, the Simpson index, community composition, mean body size, and abundance) and single-species distrib...
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PMID: 21563587
PDF is available here.
PDF is available here.