Species diversity. Medical search. Frequent questions

Meanings of species diversity may include species richness, taxonomic or phylogenetic diversity, and/or species evenness. (wikipedia.org)
Species richness is a simple count of species. (wikipedia.org)
If all species are equally abundant in the dataset, changing the value of q has no effect, but species diversity at any value of q equals species richness. (wikipedia.org)
Negative values of q are not used, because then the effective number of species (diversity) would exceed the actual number of species (richness). (wikipedia.org)
Such indices include species richness, the Shannon index, the Simpson index, and the complement of the Simpson index (also known as the Gini-Simpson index). (wikipedia.org)
Species richness quantifies the actual rather than effective number of species. (wikipedia.org)
There were greater nectar plant species in sites with greater plant species richness. (springer.com)
Among the butterfly community indices analyzed, the strongest correlation was detected between butterfly species richness and nectar plant species richness at each site. (springer.com)
Another close correlation was detected between the species richness of nectar plants and herbaceous plants at each site. (springer.com)
These results suggest that herbaceous plant species richness in a habitat plays a central role in its nectar plant species richness, and the nectar plant richness is a highly important factor supporting its adult butterfly species richness. (springer.com)
Consequently, we propose that the maintenance and management of herbaceous plant species richness in a butterfly habitat, which lead to those of its nectar plant species richness, are very important for conservation of butterfly diversity even in and around woodland landscapes of temperate regions. (springer.com)
Community-wide asynchrony mediated the positive effects of species richness and response diversity (describing how species with similar effects on ecosystem function respond differently to environmental change) on multifunctional stability. (datadryad.org)
However, species richness had a negative direct effect on multifunctional stability because, although it increased the averaged temporal mean of multiple functions, it strongly increased the averaged temporal standard deviation of multiple functions. (datadryad.org)
The overall effects of species richness on multifunctional stability were thus negative, whereas those of response diversity were positive. (datadryad.org)
We conclude that species asynchrony and response diversity, rather than species richness, are key to the ecosystem multifunctional stability. (datadryad.org)
In addition, the size of the lake area and its electrical conductivity may affect species diversity and richness depending on the amount and quality of water inflow. (tubitak.gov.tr)
The highest species richness is found in the tropics. (lu.se)
In the absence of fire, south-east Tasmanian heathlands have seen a 32% reduction in area and an overall reduction in plant species richness since c. 1970. (uib.no)
In Norwegian heathland, rotational burning was found to increase species richness and turnover of carabids, and lead to the formation of distinct species assemblages associated with different phases of the Calluna life cycle. (uib.no)
Thus replicated experiments were used to compare the impact of Impatiens removal on α, β, γ components of species richness, diversity and evenness in open riparian habitats in north-east England. (nerc.ac.uk)
The increase in α richness and diversity following Impatiens removal was matched by a similar increase in the γ components. (nerc.ac.uk)
Species richness is one component of species diversity, but not the only determinant. (usda.gov)
microbial richness, diversity, and differential species abundance were assessed. (cdc.gov)
Compared to HCs, children with CF were found to have lower bacterial richness, alpha-diversity, and a different microbial composition. (cdc.gov)
When evaluating them by their BMIp color zone, richness and alpha-diversity were lowest in those in the Red Zone. (cdc.gov)

Online biodiversity calculator which helps to calculates the Shannon's Diversity Index and Evenness from the given sample data. (easycalculation.com)
Genetic diversity is an integral part of biodiversity, recognized as key for population persistence in and adaptation to changing environments and extreme events. (slf.ch)
Objective 5.7 - Consider the potential impact on biodiversity, and in particular the invasiveness of species, in making import and export decisions. (biodiv.be)
The international trade may adversely impact biodiversity by introducing new species such as invasive alien species (IAS), GMOs or diseases that affect related species. (biodiv.be)
Recent conceptual, technological, and methodological advances in phylogenetic systematics have enabled increasingly robust statistical species delimitation in empirical studies of biodiversity. (ku.edu)
Our study contributes to a growing body of literature suggesting that integrative combinations of types of data and analyses are most informative to systematists and biodiversity specialists when attempting to estimate species diversity. (ku.edu)
Each year in the Adirondacks, the All-Taxa Biodiversity Inventory (ATBI) seeks to document the array of species which inhabit a certain patch of the park by inviting volunteer naturalists of all walks and skill levels to survey the landscape in what. (adirondackexperience.com)
We are developing a system for the automated recording of biodiversity," says Karl-Heinz Frommolt from the Museum für Naturkunde Berlin, who is responsible for the bioacoustic identification of animal species with his research group. (museumfuernaturkunde.berlin)
Human disturbances, such as over-harvesting of crops, habitat destruction and invasive species, are the biggest drivers of biodiversity loss. (movingimagearchivenews.org)
The Convention on Biological Diversity - the first global biodiversity treaty - set a target of 17 per cent of total global land area to be protected by 2020. (movingimagearchivenews.org)
The second half of this year's Conference of the Parties to the Convention on Biological Diversity is scheduled be held in April, where one of the main goals is to discuss the post-2020 biodiversity framework. (movingimagearchivenews.org)
Hotspots of biodiversity such as the Amazon, the Congo and the Mekong-Delta River basins are regions with extraordinarily high levels of species diversity and endemism. (who.int)
Protecting ecosystems and the diversity of species that live in them cannot be separated from an understanding of the underlying factors driving climate change, biodiversity loss and the social injustices people experience. (lu.se)
At LUCSUS, we study the role people play in protecting ecosystems and biocultural diversity and how local threats to the environment are connected to social and economic processes, for instance the production and trade of commodities that are causing deforestation and biodiversity loss. (lu.se)

Taxonomic or phylogenetic diversity is the genetic relationship between different groups of species. (wikipedia.org)
But as prostrate milkweed numbers and densities have declined, the plant is also imperiled by lower reproductive success and loss of genetic diversity. (biologicaldiversity.org)
To evaluate the genetic diversity and population structure of I. lacunosa populations, we amplified inter-simple sequence repeats loci by polymerase chain reaction (ISSR-PCR) of 64 accessions using 14 ISSR primers for Ipomoea. (scirp.org)
J. C. Huang and M. Sun, "Genetic Diversity and Relationships of Sweet Potato and Its Wild Relatives in Ipomoea series Batatas (Convolvulaceae) as Revealed by Inter-Simple Sequence Repeat (ISSR) and Restriction Analysis of Chloroplast DNA," Theoretical and Applied Genetics, Vol. 100, No. 7, 2000, pp. 1050-1060. (scirp.org)
The global Convention on Biological Diversity (CBD) requires countries to assess and monitor, and eventually halt the loss of genetic diversity. (slf.ch)
The project GenDiB sets out to evaluate the needs and feasibility of a new national database on geo-referenced genetic diversity data in populations of wild species across Switzerland (Phase 1). (slf.ch)
Such a database can provide a baseline for evaluating spatial patterns of intraspecific genetic diversity across a broad range of taxa, detect populations and areas of conservation concern, and allow for the assessment of temporal changes or effects of extremes. (slf.ch)
Currently, we are conducting a literature search to compile existing datasets of genetic diversity in natural populations in Switzerland. (slf.ch)
After compilation, the collected genetic data will be grouped according to species and displayed in an interactive map . (slf.ch)
To date, studies of this group have relied on purportedly diagnostic differences in morphological characters, with no attention given to the genetic underpinnings of species diversity. (ku.edu)
We collected a 5-gene dataset to estimate phylogeny, and used multilocus genetic networks, analysis of population structure, and a Bayesian coalescent approach to infer species boundaries in this group. (ku.edu)
To investigate the forces driving current gene-flow patterns and past evolutionary histories, we searched for common patterns of population genetic subdivision within eight species sampled throughout their distributions [mitchochondrial DNA (mtDNA) control region, n = 1086]. (oregonstate.edu)
Overall, a strong relationship was found between habitat depth and population structure among species, and species inhabiting shallower water habitats showed lower genetic diversity with higher levels of population subdivision. (oregonstate.edu)
What is the relevance of smallholders' agroforestry systems for conserving tropical tree species and genetic diversity in circa situm, in situ and ex situ settings? (cifor.org)
Genetic diversity of represents the evolutionary history of species and the essential evolutionary potential to respond to changing environments especially for endangered species. (nii.ac.jp)
By using these markers, fine scale population structures and genetic diversities of these species were revealed. (nii.ac.jp)
Little is known about the composition and genetic diversity of these viruses. (fiocruz.br)
Here, we investigated the relationship between the genetic composition of LRV1 detected in strains of Leishmania (Viannia) braziliensis and L. (V.) guyanensis and the interaction between the endosymbiont and the parasitic species, analyzing an approximately 850 base pair region of the viral genome. (fiocruz.br)
The results illustrate the genetic diversity of the LRV1 strains analyzed here, with smaller divergences detected among viral sequences from the same parasite species. (fiocruz.br)
To assess the amount of species-level diversity in Stylaria, an integrative approach using morphological investigations and genetic information was employed. (siu.edu)
Chrysanthemums have beautiful flowers with high ornamental value and rich genetic diversity. (ashs.org)
AFLP technology could be very efficient for discriminating species of chrysanthemum and its related genera and reconstruct their genetic relatedness. (ashs.org)
Molecular technology has been widely used in analyzing genetic relationships and diversity. (ashs.org)
To address this, I will compare highly fragmented and largely continuous semi-natural grasslands, examining how genetic diversity and adaptive potential varies in these environments for pollinators. (lu.se)
I will measure changes in genetic diversity and prevalence of deleterious mutations in insect pollinators sampled before and after the onset of large scale human disturbances within Sweden in habitats of varying fragmentation. (lu.se)
This project will include both morphological and genetic work, and probably the discovery and description of new species. (lu.se)

Objective 3.7 - Invasive alien species (IAS) and pathways are identified and prioritized, priority species are controlled or eradicated, and measures are in place to manage pathways to prevent their introduction and establishment. (biodiv.be)
ALBANY, N.Y. - The Adirondack Park's largest environmental advocacy organization today applauded Gov. Andrew Cuomo and the Legislature for State Budget funding that will protect clean water, buy new Park land, fight climate change, resist invasive species, build more resilient trails and make the Park more welcoming place for all state residents. (adirondackcouncil.org)
13.3 million to fight invasive species, including another $450,000 specifically for Lake George, $6 million for eradication grants and $500,000 to Cornell University to combat the invasive hemlock wooly adelgid - an insect that kills hemlock trees. (adirondackcouncil.org)
Typical Tasmanian heathland species were found more often in heat-treated soil seed bank samples, while more invasive species germinated from unheated samples. (uib.no)
This study highlights how removal experiments combined with partitioning of diversity components across spatial scales can provide key insights into invasive species' impacts. (nerc.ac.uk)
Feral and invasive species, e.g. (ddcr.org)

The harvesting and trade of the species threaten their natural populations and urgent tools, including in situ and ex situ conservation, are needed to ensure their long-term sustainable exploitation. (hindawi.com)
All populations of the milkweed in the United States are within nine miles of the border, making it one of hundreds of species threatened by wall construction. (biologicaldiversity.org)
And as frogs worldwide die off from a disease known as amphibian chytrid fungus, scientists can use information about how various species of frogs reproduce to develop security populations that are protected from the disease. (si.edu)
georeferenced, natural populations of eukaryotic species in Switzerland. (slf.ch)
Molecular data demonstrate that populations of this taxon, ostensibly occurring across Maritime and Continental Antarctica, as well as on some offshore islands, are evolutionarily isolated and divergent and cannot be included within a single species. (bas.ac.uk)
High-latitude populations generally showed low haplotype and nucleotide diversity. (oregonstate.edu)
These data suggest that processes resulting from intraspecific differences in habitat preference, climatic histories and/or larval ecologies have subdivided populations of shallow water triplefin species. (oregonstate.edu)
Various studies confirm that species diversity and populations of insects and birds are declining dramatically in Germany. (museumfuernaturkunde.berlin)
To do this I will sample whole genomic data from modern field and historical museum specimens, comparing the diversity present in the past with what I sample in contemporary populations, and how this differs with changes in habitat continuity. (lu.se)

The water monitors (Varanus salvator Complex), a widespread group distributed throughout Southeast Asia and southern India, have been the subjects of numerous taxonomic treatments, which recently have drawn increased attention to the possibility of undocumented species diversity in the Philippines. (ku.edu)
Classical taxonomic approaches, complemented by molecular tools, are improving our understanding of the systematic relationships of some species, changing the nomenclature of taxa and challenging the taxonomic status of others. (bas.ac.uk)
The present study, combining morphological with molecular data, attempts to validate this hypothesis and challenges the taxonomic status of F. antarctica, suggesting that two additional new species, described here as Friesea gretae sp. (bas.ac.uk)
Stylaria is a genus of globally distributed clitellates consisting of two recognized species with a difficult taxonomic history: Stylaria lacustris and Stylaria fossularis. (siu.edu)

Protecting prostrate milkweed is a big deal for the monarch butterflies who lay their eggs on these plants as they fly through Texas after spending the winter in Mexico," said Tierra Curry, a senior scientist at the Center for Biological Diversity. (biologicaldiversity.org)
The Center for Biological Diversity is a national, nonprofit conservation organization with more than 1.7 million members and online activists dedicated to the protection of endangered species and wild places. (biologicaldiversity.org)
The Center for Biological Diversity filed a petition today with the U.S. Fish and Wildlife Service seeking Endangered Species Act protection for the critically imperiled Railroad Valley toad, which is threatened by a proposed lithium production project and oil drilling. (biologicaldiversity.org)
NEW ORLEANS- As the result of a lawsuit by the Center for Biological Diversity and Healthy Gulf, the U.S. Fish and Wildlife Service today proposed to protect Pearl River map turtles as a threatened species under the federal Endangered Species Act. (biologicaldiversity.org)
The beautiful Nevin's barberry is already a highly endangered species," said Ileene Anderson, biologist with the Center for Biological Diversity. (biologicaldiversity.org)

This dataset contains the digitized treatments in Plazi based on the original journal article Jordal, Bjarte H. (2017): Ancient diversity of Afrotropical Microborus: three endemic species - not one widespread. (gbif.org)
Triplefin fishes (Family Tripterygiidae) dominate the New Zealand temperate coastal fish fauna in diversity (26 endemic species, 14 genera). (oregonstate.edu)
In this study, we developed microsatellite markers for nine endangered amphibian species endemic to Ryukyu Islands in Japan. (nii.ac.jp)

The effective number of species refers to the number of equally abundant species needed to obtain the same mean proportional species abundance as that observed in the dataset of interest (where all species may not be equally abundant). (wikipedia.org)
The equation is: q D = 1 ∑ i = 1 S p i p i q − 1 q − 1 {\displaystyle {}^{q}\!D={1 \over {\sqrt[{q-1}]{\sum _{i=1}^{S}p_{i}p_{i}^{q-1}}}}} The denominator equals mean proportional species abundance in the dataset as calculated with the weighted generalized mean with exponent q - 1. (wikipedia.org)
In practice, q modifies species weighting, such that increasing q increases the weight given to the most abundant species, and fewer equally abundant species are hence needed to reach mean proportional abundance. (wikipedia.org)
If the individuals are classified into genera or functional types, p i {\displaystyle p_{i}} represents the proportional abundance of the ith genus or functional type, and qD equals genus diversity or functional type diversity, respectively. (wikipedia.org)
This study aimed to evaluate freshwater snail species diversity, abundance, and distribution in KwaZulu-Natal (KZN) province, South Africa, between December 2020 to February 2021. (mdpi.com)
The spatiotemporal changes of these three types of aquatic habitats were investigated in terms of the zooplankton organisms by examining their diversity, evenness, and differences in the abundance of species. (tubitak.gov.tr)
It includes not only the number of species in the area but also their relative abundance and spatial distribution. (usda.gov)

Critical habitat designation identifies the habitat that is essential to the survival and recovery of species protected by the Endangered Species Act and provides mechanisms for protecting that habitat from destruction or degradation. (biologicaldiversity.org)
The Endangered Species Act mandates that critical habitat be designated for all federally listed species, allowing only limited exceptions. (biologicaldiversity.org)
Only a small minority of federally listed species in the United States have designated critical habitat. (biologicaldiversity.org)
Critical habitat is a must for rare plant survival and recovery, and species with critical habitat are recovering twice as fast as those without," added Anderson. (biologicaldiversity.org)
Cuts in recovery habitat means endangered species may go extinct or cling to their deathbeds for years, driving up recovery costs and difficulty. (biologicaldiversity.org)
The cutting of habitat protection comes amid a torrent of new studies showing declines in the diversity and health of native plants. (biologicaldiversity.org)
Understanding how habitat fragmentation differentially impacts these species is vital for performing proper conservation action in such complex communities. (lu.se)

Ethnobotanical knowledge on four herbaceous species, Acmella uliginosa (Sw. (hindawi.com)
The present research focused on four herbaceous species highly used as medicine in Benin but still less documented, Acmella uliginosa (Sw. (hindawi.com)
Present study was aimed to understand the variation in herbaceous species composition, diversity, biomass and soil physicochemical properties in canopy gaps and under the canopy of semi-arid forests in the Aravalli hills. (researchsquare.com)
The sites differed in terms of herbaceous species composition, diversity, biomass and soil physico-chemical properties. (researchsquare.com)

They found that several species of lace bugs in the genus Ulonemia , which are native to Australia, have become significant agricultural pests and are responsible for major economic losses within the macadamia industry. (horticulture.com.au)
Here we showcase an ideal organismal system for a data-rich, comparative approach to evaluating integrative strategies of species delimitation among charismatic monitor lizards of the genus Varanus. (ku.edu)
The current species-level taxonomy of this genus is unclear due to variation in several morphological characters. (siu.edu)
Nonpoisonous sumac species (genus Rhus, family Anacardiaceae) have red fruits. (medscape.com)
Poison sumac species (genus Toxicodendron, family Anacardiaceae) have white-to-green hanging fruits. (medscape.com)

Phylogenetic analyses showed that the LRV1 sequences are grouped according to the parasite species and possibly according to the population of the parasite in which the virus was detected, corroborating the hypothesis of joint evolution of the viruses with the speciation of Leishmania parasites. (fiocruz.br)
Based on my morphological investigations and disagreement among species delimitation methods, I conservatively propose that the subclades discovered via phylogenetic analysis of mitochondrial and nuclear sequence data within S. lacustris represent population-level rather than species-level variation. (siu.edu)

Our team set out to address this knowledge gap for terrestrial mammal species, which provide critical ecological services for ecosystems and people. (movingimagearchivenews.org)
Our study highlights how camera trap surveys can generate standardized data on many species within mammal communities across varied ecosystems. (movingimagearchivenews.org)
Services are the goods that forested ecosystems provide such as timber, maple syrup, and recreational and hunting opportunities, and the functions that they perform such as supporting bird diversity and storing carbon. (uvm.edu)
Biocultural diversity emphasises the inextricable link between cultural and biological diversity and the role of people in contributing to the diversity of ecosystems and landscapes and vice versa, how biological diversity influences culture and shapes cultural diversity. (lu.se)
Biological diversity includes the diversity within and between both species and ecosystems. (lu.se)

Often researchers have used the values given by one or more diversity indices to quantify species diversity. (wikipedia.org)
Ethnobotanical indices are worldwide applied to evaluate ethnobotanical knowledge on plant species [ 8 - 10 ]. (hindawi.com)
Diversity indices were higher in canopy gaps. (researchsquare.com)

As the diversity of lines of evidence has increased, so too have the kinds of tools and inferential power of species delimitation methods expanded. (ku.edu)

It took almost five years to create and analyze the study's data, which includes information about the diets, body sizes and variety of species in 515 mammal communities from Africa, Asia, Madagascar, and the Americas. (scitechdaily.com)
The authors spent more than five years compiling and analyzing data about the diets, body sizes, and variety of species in 515 mammal communities - each with multiple species - in the tropical and subtropical regions of the Americas, Africa, and Asia. (scitechdaily.com)
The aim is to protect a large variety of species and habitats throughout the member states of the EU. (worldwidepanorama.org)
The variety of species in an area. (usda.gov)

This study suggests things are more complex, and that we will need to take legacy effects into consideration when making predictions about how climate change will affect species distributions. (scitechdaily.com)
Most species appear to have evolved as a local radiation and mostly occupy sympatric distributions throughout New Zealand. (oregonstate.edu)
While environmental factors such as temperature and vegetation productivity are known to affect the distributions and diversity of species, the impact of human activities is not as well understood. (movingimagearchivenews.org)
We also examined the effects of distance from the road and topography on the relative distributions of annual versus perennial species and of native versus introduced species. (uri.edu)

Evidence for cryptic diversity in the "pan-Antarctic" springtail Friesea antarctica and the description of two new species. (bas.ac.uk)

Surveys of seven sites in Rhode Island during the summer of 2008 revealed that roadsides are important refugia for grassland plants, including two species and two subspecies believed to be rare in New England. (uri.edu)

Species evenness quantifies how equal the abundances of the species are. (wikipedia.org)

was the species most demanded by customers followed by Momordica charantia L. Traders confirmed the scarcity of all species in recent years and climate change and destruction of natural habitats for logging were the most cited causes. (hindawi.com)
Biological invasions are the second most important cause of the extinction of species worldwide (and in Belgium) after the loss of natural habitats. (biodiv.be)

The study indicates that fungi and herbivorous insects play a non-negligible role in maintaining species diversity of understory herbs in the temperate forest. (phys.org)

In a study published in Journal of Ecology , Wang Xugao and Dr. Jia Shihong from the Institute of Applied Ecology (IAE) of the Chinese Academy of Sciences (CAS) have conducted a field manipulation experiment in a temperate forest in northeastern China and examined the effects of fungi and insect herbivores on herb diversity by using fungicides and insecticides. (phys.org)
Shihong Jia et al, The effects of natural enemies on herb diversity in a temperate forest depend on species traits and neighbouring tree composition, Journal of Ecology (2022). (phys.org)

and that regional diversity may be either unaffected or negatively impacted by dispersal because dispersal tends to homogenize local communities. (uchicago.edu)
The approach adopted in this study highlights that although Impatiens reduces native species diversity in open and frequently disturbed riparian vegetation, many of the species negatively influenced by Impatiens are widespread ruderal species. (nerc.ac.uk)
Reduced light for photosynthesis and tree root competition for soil resources may be the major factors negatively affecting herbaceous diversity and biomass. (researchsquare.com)

The prostrate milkweed listing comes in response to a Center lawsuit to gain final decisions on protection for 241 plant and animal species threatened with extinction, including the prostrate milkweed and more than 35 others in Texas. (biologicaldiversity.org)
Understanding how to save an animal species from dying out may depend, in part, on understanding the many unique processes that lead to birth. (si.edu)
Frommolt's team is responsible for the devices used to record soundscapes, or more precisely: the automatic bioacoustic identification of vocalising animal species. (museumfuernaturkunde.berlin)
Algorithms recognize patterns and assign them to animal species. (museumfuernaturkunde.berlin)
I expect that we will be able to detect about 90 percent of vocalizing animal species," says Frommolt. (museumfuernaturkunde.berlin)

We surveyed a variety of terrestrial vertebrates as we birded, and found several species of herps including American Toads. (adirondackexperience.com)
Using several species delimitation tools, I was able to estimate the number of species in this group. (siu.edu)

Fundamental knowledge about the different ways animals reproduce has practical applications for conservation, yet when you search through the scientific literature, almost everything is focused on rodents," said Dr. David Wildt, head of the National Zoo's Center for Species Survival, part of the Smithsonian Conservation Biology Institute. (si.edu)
Bavaria's present government still prefers new autobahn projects over nature protection and landscape conservation, so it might have been very positive in their eyes to have an endangered species living in a park that's not suited for new roads anyway. (worldwidepanorama.org)

National Zoo scientists made this recommendation in a paper recently published in the scientific journal Molecular Reproduction & Development and highlighted some of the unique reproductive traits among the planet's more than 55,000 vertebrate and 1.1 million invertebrate species. (si.edu)
In addition, fungicides and insecticides affected herb diversity depending on the defensive traits of herb species (e.g., leaf thickness), and only the herbs with thinner leaves or non-clonal traits significantly decreased their species diversity when the plants were sprayed with fungicides and insecticides. (phys.org)
Indicator value and species traits of carabid beetles across a prescribed fire chronosequence in anthropogenic coastal heathland. (uib.no)

Blair RB, Launer AE (1997) Butterfly diversity and human land use: species assemblages along an urban gradient. (springer.com)

And although only a fraction of the actual number of species is described, they are also one of the largest. (lu.se)

Separate statistical analyses were conducted for each community to determine how well recent and ancient events - both climatic and human - could account for present-day diets, body sizes, and species variation. (scitechdaily.com)
Within Stylaria, morphological criteria might be useless at the species level as there is a high level of intraspecific morphological variation. (siu.edu)
Because about 75 percent of Shigella infections in developing countries are caused by Shigella sonnei, the lack of antigenic variation within this species makes it difficult to discriminate between strains. (cdc.gov)

In order to be able to determine not only which species can be found on site, but also to estimate the population size, the AMMOD stations will provide four-channel recordings that should make it possible to discriminate the source of sounds. (museumfuernaturkunde.berlin)
Some studies estimate that the current species extinction rate is 1,000 times the normal background rate . (movingimagearchivenews.org)

We examined the relationships between the diversities of vegetation, adult nectar plants, and butterflies in and around the Aokigahara primary woodland on the northwestern footslopes of Mount Fuji, central Japan. (springer.com)
The species composition has transitioned from a dominance of small shrubs and non-woody species, to taller species, thus altering the vegetation structure. (uib.no)
In these areas, burning is generally necessary to maintain vegetation, promote germination in a range of heathland species, and keep plant and carabid diversity high. (uib.no)

The existence of various genotypes and ecotypes of I. lacunosa demonstrates the evolutionary diversification of this weedy species as it adapts to new colonized environments and agricultural activities. (scirp.org)
Our results contradict previous systematic hypotheses, reveal surprising relationships between Philippine and non-Philippine lineages, and simultaneously uncover novel, cryptic evolutionary lineages (new putative species). (ku.edu)
Nancy Strockbine] Understanding the diversity that exists within a species is very important for epidemiologic investigations and evolutionary studies. (cdc.gov)

Taken together, these results reveal that dispersal has a complex, spatially contingent relationship with patterns of species diversity. (uchicago.edu)
These new species, together with earlier work where 13 other species were described from the island, suggest that there is a range of genetically diverse and highly morphologically variable dictyostelid taxa occurring on Madagascar, suggesting biogeographic patterns even within these very small organisms. (lu.se)
We hypothesised that common phylogeographical and population differentiation patterns would reveal past or ongoing physical processes, with differences reflecting stochastic or species-specific processes. (oregonstate.edu)
Some current collaborations include the Tropical Ecology, Assessment and Monitoring (TEAM) Network , eMammal and an assessment of global patterns in mammalian carnivore diversity. (movingimagearchivenews.org)

By partitioning diversity components, impacts were consistently assessed at local and community scales and, when combined with analysis of species accumulation curves, provided a comprehensive assessment of impact on the plant community. (nerc.ac.uk)
Assessment of fine-scale plant species beta diversity using WorldView-2 satellite spectral dissimilarity. (lu.se)

The loss of response diversity and compensatory mechanisms would likely reduce the long-term sustainability of grasslands in the face of global change. (datadryad.org)
Fungi and insect herbivores contribute to the diversity of plants in grasslands, which has been frequently reported. (phys.org)

Species differed in their defensive efficacy, but species within similar size classes shared similar abilities. (peerj.com)
Smaller Trapezia species, which were previously thought to be ineffective guards, play important defensive roles against small corallivores. (peerj.com)

Moisture-loving and generalist predator species were identified as more fire-sensitive, while collembolan specialists without moisture preferences were more common in recently burnt patches. (uib.no)
For all these analyses, I will focus initially on a common generalist - the Common Blue Butterfly, Polyommatus icarus - and expand into other species, potentially a more specialist butterfly species or solitary bees. (lu.se)

Species diversity in communities of interacting organisms is thought to be enhanced by dispersal, yet mechanisms predicting this have little to say about what effects differing rates of dispersal have on diversity and how dispersal affects diversity at larger spatial scales. (uchicago.edu)

I found that immigration increased local diversity. (uchicago.edu)
This recently identified species is found at just one spring-fed wetland complex in Railroad Valley, Nevada. (biologicaldiversity.org)
They found that only 10 percent of the more than 12,000 studies were based on a nontraditional species and that 36 percent of the published papers were about mice and cattle. (si.edu)
3. We found that community-wide species asynchrony was a strong driver to stabilize multiple functions. (datadryad.org)
The researchers found that fungicides decreased herb diversity by 5%, and that the negative effect was weaker in the studied plots where there were a higher number of neighboring tree species . (phys.org)
But we had already found species like Northern Parula, Common Yellowthroat, Black-throated Green Warbler, and Swainson's Thrush by the time we were due back. (adirondackexperience.com)
We found that overall microbial diversity does not seem to be impacted by fiber intake. (ubc.ca)
We found that the amount of official protection an area has is an important determinant of mammal diversity. (movingimagearchivenews.org)
We found 80 grass and forb species, 45% of which are native. (uri.edu)
While 277 were classified as both edible and medicinal, 193 poisonous species were found to be also edible and/or medicinal. (medscape.com)
Overall, we found that in our validation cohort, Bacteroides ovatus was increased in the LoCalMed arm after 6 months, and this bacterial species is associated with fewer negative health effects," she said. (medscape.com)

If the current climate is what's most important for where you see species, then as climate changes, we might expect species to track climate to the best of their abilities," she said. (scitechdaily.com)
Many insect species are undergoing rapid population decline in recent decades due to anthropogenic changes to natural landscapes and climate. (lu.se)

The Informant Consensus Factor is not applicable in this study since we are dealing neither with the diversity of medicinal plants used by a community of people nor with a great number of plant species used for medicinal purposes, nor the diversity of plant species used in the treatment of a specific or group of ailments. (hindawi.com)
The respondent's age does not influence the diversity of ethnobotanical uses they hold on the study species. (hindawi.com)
But Wildt and the paper's co-authors stress that the academic community should take a more proactive approach, looking beyond laboratory rodents and livestock to collect data on various species-and to do so before they become too rare to study or save. (si.edu)
The results showed that the nectar resource utilization by adult butterflies was significantly biased to herbaceous plants, especially to perennials, compared to woody species, although most of the study area was in and near a primary woodland. (springer.com)
In the first study of its kind, researchers have discovered that events from 20,000 years ago or more are still impacting the diversity and distribution of mammal species worldwide. (scitechdaily.com)
The latest morphological study has confined F. grisea to the sub‐Antarctic island of South Georgia, from which it was originally described, and resurrected F. antarctica as a congeneric species occurring on the continental mainland. (bas.ac.uk)
The objectives of this study were to examine the protective services of six species of Trapezia against corallivory, and the extent of functional diversity among these Trapezia species. (peerj.com)
if the opportunity arises to study ephemeral species, then spatial distribution and growth of ephemerals over their lifespan. (ddcr.org)
diversity that occurs on dairy farm s, a pilot study sampled dairy workers, cows and the farm environments from five farm s, two organic and three conventional farm s, in Washington State. (cdc.gov)
Among NYC firefighters enrolled in the randomized FIREHOUSE (Food Intake Restriction for Health Outcome Support and Education) study who took part in a microbiome substudy, those who followed a low-calorie, Mediterranean-style diet had higher levels in stools samples at 6 months of Bacteroides ovatus , a bacterial species associated with protection against bowel inflammation. (medscape.com)
In the pilot study, there was an increase over 6 months in the usual care arm only of Bilophila wadsworthia, a species associated with high-fat diets and inflammation. (medscape.com)
In the validation study, patients in the LoCalMed arm had significant reductions in Ruminococcaceae ( P = .015) and increases in both Bacteroides ovatus (P = .03) and Alistipes shahii ( P = .038), a recently identified species with uncertain protective or pathogenic potential. (medscape.com)
The present study confirmed the diversity of LAB species inhabiting silages. (who.int)

Although species diversity can be calculated for any data-set where individuals have been identified to species, meaningful ecological interpretations require that the dataset is appropriate for the questions at hand. (wikipedia.org)
We sought to test the assumption that mowed roadsides are ecological wastelands dominated by deliberately seeded introduced perennial grass species. (uri.edu)

Eight non-native species (in addition to Impatiens) occurred in the community and these responded proportionally more to Impatiens removal than native species. (nerc.ac.uk)
As a result the proportion of non-native species in removal plots was higher than in invaded plots. (nerc.ac.uk)
Neither distance from the road nor topography had a clear effect on the distribution of native species relative to introduced species. (uri.edu)

M. Jasieniuk and B. D. Maxwell, "Plant Diversity: New Insights from Molecular Biology and Genomics Technologies," Weed Science, Vol. 49, No. 2, 2001, pp. 257-265. (scirp.org)

The five new species are morphologically disparate, ranging from relatively small, robust taxa such as R. stabile to taxa with variable morphologies such as the larger H. radiatum and H. versatile and the yellow-tinted and irregularly branched species C. canoespora and C. basinulosa. (lu.se)
Overall, our findings indicate that dietary fiber does not influence microbial diversity but does enrich specific beneficial microbial taxa in the Colombian population. (ubc.ca)

5000 species) of small parasitic wasps, many beautifully metallic. (lu.se)

In many real datasets, the least abundant species is represented by a single individual, and then the effective number of species would equal the number of individuals in the dataset. (wikipedia.org)

Members of this taxon, which is made up of almost 200 described species, are common in terrestrial soils globally. (lu.se)

Cheetahs produce many malformed spermatozoa, a common finding in men, and some species of birds and bats have the ability to naturally store sperm for months, perhaps offering new insights for overcoming certain human infertility conditions," Comizzoli said. (si.edu)

Still, the alpha diversity is not well known in many areas, and new species are frequently recovered. (lu.se)

Species diversity is the number of different species that are represented in a given community (a dataset). (wikipedia.org)
The Gini-Simpson index equals 1 - 1/2D and quantifies the probability that the two randomly taken individuals represent different species. (wikipedia.org)
One factor, Leishmania RNA Virus 1 (LRV1), has been described as an endosymbiont present in different species of Leishmania. (fiocruz.br)

Studies conducted in Mo'orea, French Polynesia showed the Trapezia - coral mutualism protected the host corals from multiple predators through functional diversity in the assemblage of crab symbionts. (peerj.com)

started to breed new garden chrysanthemums in 1961, hybridizing dwarf cultivars with wild species through mixed pollination or open pollination. (ashs.org)

Anatomy6

Organisms56

Chemicals and Drugs23

Analytical, Diagnostic and Therapeutic Techniques and Equipment27

Psychiatry and Psychology2

Phenomena and Processes103

Disciplines and Occupations13

Anthropology, Education, Sociology and Social Phenomena7

Technology, Industry, Agriculture7

Information Science5

Health Care40

Geographicals27

Richness25

Biodiversity14

Genetic26

Invasive6

Populations9

Taxonomic4

Center for Biolo5

Endemic3

Abundance7

Habitat7

Herbaceous species4

Genus5

Phylogenetic2

Ecosystems5

Indices3

Delimitation methods1

Variety of species4

Distributions4

Cryptic diversity1

Grassland plants1

Evenness1

Habitats2

Understory1

Temperate2

Negatively3

Animal species5

Several species2

Conservation2

Traits3

19971

Actual number of spec1

Variation3

Estimate2

Vegetation3

Evolutionary3

Patterns4

Assessment2

Grasslands2

Defensive2

Generalist2

Spatial scales1

Found11

Climate2

Study13

Ecological2

Native species3

Plant Diversity1

Taxa2

Parasitic1

Datasets1

Terrestrial1

Insights1

Alpha diversity1

Different species3

Functional diversity1

Wild species1