Sentences with phrase «species composition»
Your point that it's the changing species compositions of these ecosystems that is informative, etc, is one with which I agree very very much.
realclimate.org
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.
The team looked specifically at forest biomass, tree species composition, and climate variability.
Changes in water yield were largely related to changes in climate, but disturbance - related shifts in forest species composition and structure over time also played a role.
However, there was a clear difference regarding species composition, with less than two - thirds of the species found occurring simultaneously on both types of site.
Climate is a major factor in controlling global patterns of vegetation structure and productivity, as well as plant and animal species composition.
Despite important differences in the climate and species composition of tropical rainforests, tropical rainforests worldwide typically exhibit a consistent size structure.
The bacterial community from the healthy child remained fairly stable in species composition and enzyme profile.
The team looked specifically at forest biomass, tree species composition, and climate variability.
At the same time, changing species composition in our forests can also affect wetlands as they drop their leaves into the water.
This shift results in significant changes in forest species composition with their accompanying ecological effects and, moreover, affects the capacity of forest biomass (the mass of living trees) to store carbon.
«We hope that our findings will stimulate further research into relationships between species composition, ecosystem function, and climate variability.»
«It is important to be aware of things that happen in the past for species composition today,» Wepfer said.
«Temporal decay in timber species composition and value in Amazonian logging concessions» is published in the journal PLOS ONE on July 13, 2016.
Changes in forest structure and species composition alone decreased water yield by as much as 18 percent in a given year since the 1970s after accounting for climate.»
«The unique species composition, high diversity and relatively intact forest structure underscore the importance of strengthening ongoing and future conservation measures at Ton Pariwat Wildlife Sanctuary, as a key element of wider conservation efforts in southern Thailand,» adds Dr. Strijk.
When the team look at the entire species composition of the decomposing intestines, they found that the kinds of bacteria present shift about halfway through the bloat stage.
City tree population and species composition figures were generated through an analysis of 1,385 study plots located across the state.
«This can help us determine mechanisms that influence species composition in planktonic communities exposed to red tides, and suggests that these chemical cues could alter large - scale ecosystem phenomena, such as the funneling of material and energy through marine food webs.»
The nature of the relationship between gray whale populations and climate - sensitive ecosystem features such as sea ice, freshwater input to nearshore benthic ecosystems and benthic species composition is poorly understood [19], [20].
The loop is closed back to the climate system, since it is the structure of ecosystems, including species composition, that largely sets the terrestrial boundary condition of the climate in terms of surface roughness, albedo, and latent heat exchange (see Chapter 3, Section 3.2.2).
In addition, since each species has a particular set of ideal growing conditions, species composition at a particular site at a particular time may indicate past environmental conditions.
Relative abundance as well as species composition in particular areas may indicate environmental conditions.
Widespread agricultural land use by mid-Holocene is further evidenced by altered fire regimes that may have transformed vegetation structure and species composition across many regions, with woodland ecosystems from the Mediterranean to the Tropics increasingly recognized as the bio-cultural legacies of long histories of prior human use (50, 74, 78 ⇓ ⇓ ⇓ ⇓ ⇓ — 84).
Drivers of Sahel vegetation change remain uncertain (Hutchinson et al., 2005), especially because the correlation between rainfall and Normalised Difference Vegetation Index (NDVI) appear weak, signalling that greening can not be fully explained by increasing rainfall (Olsson et al., 2005), and greening may not comprise a return to the initial species composition, cover and surface soil conditions (Warren, 2005).
«To our knowledge, this is the first nationwide synthesis of the tree - species composition of forests reestablished under the program,» Hua said.
Regardless of the cause of the warming, the new study «helps us understand the rate of migration of species and changes in species compositions with warming, which helps us make predictions,» Dr. Oechel said.
The greater production in Borneo may partly reflect higher solar radiation, but another important factor appears to be the different tree species composition: Species of the dominant Southeast Asian tree family Dipterocarpaceae exhibit significantly higher production than other tree species in the sampled plots.
«We hope that our findings will stimulate further research into relationships between species composition, ecosystem function, and climate variability.»
Abstract Mounting evidence suggests that anthropogenic global change is altering plant species composition in tropical forests.
Increased insect outbreaks and changing species composition will present additional challenges for forest products industries.
This shift results in significant changes in forest species composition with their accompanying ecological effects and, moreover, affects the capacity of forest biomass (the mass of living trees) to store carbon.
Species composition in these plots is not static, and highlights the ironic destructive nature of laws designed to protect native tree species in this region.
What we need is habitat - specific recommendations for the species composition.
The species composition of the human intestinal microbiota differs between particle - associated and liquid phase communities.
Overall, the study shows that forest biomass and tree species composition and their combined impact on carbon storage are affected by climatic variability on a sensitive and short timeline — just a few decades.
«Without intervention to stop poaching, as much as 96 percent of Central Africa's forests will undergo major changes in tree - species composition and structure as local populations of elephants are extirpated and surviving populations are crowded into ever - smaller forest remnants,» said John Poulsen, assistant professor of tropical ecology at Duke's Nicholas School of the Environment.
By cross-referencing these impacts with data on local elephant populations, forest tree - species composition and structure, nutrient availability, and understory growth in existing Central African forests — both protected and unprotected ones alike — Poulsen and his team determined that up to 96 percent of all forests in the region were susceptible to dramatic changes if elephant populations shrank or disappeared.
Dramatic changes in species composition may establish other equilibrium energy flows which involve other species compositions than before (ecosystem shift).
But dictating the species composition of a plankton bloom and its aftermath remains beyond the ken of marine biology, causing one researcher involved in the successful 2004 effort, marine biologist Victor Smetacek of the Alfred Wegener Institute for Polar and Marine Research in Germany, to call it beyond control at this stage.