Sentences with phrase «changes in community composition»

The changes in community composition were up to five times more extreme in drier rather than wet habitats, suggesting that water availability will play a strong role in what types of bugs will succeed in a warming Arctic.

In today's digest, check among many interesting articles: the evolution within human microbiome by T.D. Lieberman, unique microbial biodiversity residing in hadal trenches by L.M. Peoples, changes in community composition in coastal water following exposure to oil and oil dispersant by S.H. Doyle.

One example of a significant climate - induced change in community composition has been detected in False Bay.

Not exact matches

«But what we've found is that the associated changes in plant community composition in the polar regions could lead to way more carbon being released into the atmosphere as methane.»

Working with its Subcommittee on Diversity, AGU?s Committee on Education and Human Resources has developed a long - range, strategic plan for AGU, to encourage meaningful change in the composition of the earth and space science community.

«This analysis shows that the communities that did not suffer from oceanic regime shifts were those that could adapt to changes in the quantity and composition of natural resources.»

The researchers looked specifically at the average fishing revenue in 106 Alaskan communities for 10 years before and after 1989, a year when the North Pacific Ocean experienced a significant shift in productivity and abrupt changes in the composition of marine food webs, while at the same time the global price for salmon dropped because of competition from farm - raised fish.

Almost 80 percent of the communities the team examined showed substantial changes in species composition, averaging about 10 percent change per decade — significantly higher than the rate of change predicted by models.

After analyzing historical data on benthic community composition in Lake Erie over the last 50 years, the authors conclude that the lake's benthic community has changed significantly, even after taking into account the challenges presented by differences in sampling design, gear and preservation techniques, and taxonomic resolution over the years.

Most indicators of the state of biodiversity (covering species» population trends, extinction risk, habitat extent and condition, and community composition) showed declines, with no significant recent reductions in rate, whereas indicators of pressures on biodiversity (including resource consumption, invasive alien species, nitrogen pollution, overexploitation, and climate change impacts) showed increases.

The goal is to correlate changes in the composition of bacterial communities in and on the body with certain diseases.

Among their findings: in streams with the amphetamine addition, the growth of biofilms was significantly suppressed, the composition of bacterial and diatom communities changed, and aquatic insects emerged earlier.

«Dramatic shifts in species distributions, community composition, forest diversity and ecosystem functioning have to be expected,» Engelbrecht says, «even with relatively small changes in dry season lengths of only about one month.»

Joao Batista, PhD student and first author of this study, explains: «We observed that this feature is due to changes in the composition of the community of bacteria in the intestine, which is more similar across individuals with a healthy immune system, and is quite diverse in animals with an immune compromised system.»

Changes of community composition at multiple trophic levels due to hunting in Nigerian tropical forests

Drought consistently alters the composition of soil fungal and bacterial communities in grasslands from two continents — Raúl Ochoa - Hueso — Global Change Biology

Strictly defined, succession is the change in species composition and community structure with time.

For my post-doctoral project, I decided to focus on the question, «to what extent can atmospheric pollutants, such as CO2 and ozone, exert a selective effect on woody plant species, and how are the resulting changes in the genetic composition of the plant community likely to affect the animals that feed on them?»

Fedor: The journal has been slowly adapting to the changing frontiers in science and the changing composition of the scientific community, but there's still more work to do if we're going to capture emerging areas and draw in the international scientific community.

While these levels remain unfortunately low, animal studies provide us with some clues as to how to increase the sulforaphane yield of these bacteria — feed them more.66 In just four days of a high broccoli diet, those bacteria that thrive on cruciferous vegetables grow in number, leading to a change in composition of the microbial community and an increase in opportunistic bacteria that turn our broccoli into cancer - fighting sulforaphanIn just four days of a high broccoli diet, those bacteria that thrive on cruciferous vegetables grow in number, leading to a change in composition of the microbial community and an increase in opportunistic bacteria that turn our broccoli into cancer - fighting sulforaphanin number, leading to a change in composition of the microbial community and an increase in opportunistic bacteria that turn our broccoli into cancer - fighting sulforaphanin composition of the microbial community and an increase in opportunistic bacteria that turn our broccoli into cancer - fighting sulforaphanin opportunistic bacteria that turn our broccoli into cancer - fighting sulforaphane.

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Changes in plant community composition lag behind climate warming in lowland forests.

Most climate change scenarios foresee a shift or expansion of the ranges of many species of plankton, fish and invertebrates towards higher latitudes, by tens of kilometres per decade, contributing to changes in species richness and altered community composition.

Overall, climate change will lead to large - scale shifts in the patterns of marine productivity, biodiversity, community composition and ecosystem structure.

These include depletion of microbially accessible carbon pools, reductions in microbial biomass, a shift in microbial carbon use efficiency, and changes in microbial community composition.

Marine mammals, birds, cetaceans and pinnipeds (seals, sea lions and walruses), which feed mainly on plankton, fish and squid, are vulnerable to climate change - driven changes in prey distribution, abundance and community composition in response to climatic factors (Learmonth et al., 2006).

«These differences in richness and changes to community composition in oil palm plantations compared to forest habitats are underpinned by marked differences in both habitat structure and microclimate characteristics,» the researchers wrote, noting that the plantations, for instance, lacked a suitable environment for amphibian reproduction, foraging and shelter.

Changes to planktonic and benthic community composition and productivity have been observed in the North Sea since 1955 (Clark and Frid, 2001) and since the mid-1980s may have reduced the survival of young cod (Beaugrand et al., 2003).

A significant number of palaeolimnological records from lakes in the circumpolar Arctic have shown synchronous changes in biological community composition and sedimentological parameters associated with climate - driven regime shifts in increasing mean annual and summer temperatures and corresponding changes in thermal stratification / stability and ice - cover duration (e.g., Korhola et al., 2002; Ruhland et al., 2003; Pienitz et al., 2004; Smol et al., 2005; Prowse et al., 2006b).