| The critical factor in preserving plant species diversity will be developing public support for natural areas in parks. |
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| Our interest is to investigate successional changes in vascular and nonvascular plant species diversity in the fragmented forest landscapes. |
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| Within the townsite, species diversity was low, but large numbers of individuals represented most species. |
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| Lichens thus dominate the Antarctic flora both in terms of species diversity and in terms of total biomass. |
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| The partial regulation of the river by zoogenic dams did not cause a significant decline in species diversity. |
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| Nonetheless, we did not detect differences in species diversity between the floodplain and upland landforms. |
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| Organizers aim to demonstrate that species diversity even exists in the center of one the world's largest cities. |
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| We have chosen values that might plausibly reflect the total species diversity in chimps, gorillas, and orangs. |
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| Agro biodiversity index was calculated and used to show the dynamism in species diversity over a certain period of time in a specific area. |
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| Less vulnerable habitats such as grasslands have a lower species diversity and higher biomass production. |
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| Moreover, bigger peatlands have a greater bird species diversity than small peatlands and contain more rare bird species. |
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| Some of our earlier studies of assemblages of breeding dabbling ducks indicate that food limitation may affect breeding density and species diversity. |
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| Thus, grasslands would support limited species diversity, while a successional deciduous forest may support relatively higher species diversity. |
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| This more detailed DEM will also be used to model species diversity, species at risk, and afforestation as part of Canada's Kyoto commitments. |
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| Ray builds the ecosystem up from the longleaf pine and examines the notable species diversity of these forests and their unique qualities as a habitat. |
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| These methods tend to take advantage of the fact that species diversity is spread very unevenly over the earth. |
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| Agroecology guarantees land to peasants, species diversity, decent work and food sovereignty, among other principles. |
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| It takes 200 years or more after primary forest has been cut to regenerate the original species diversity. |
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| We also owe a debt of responsibility to the natural world to maintain species diversity. |
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| The most effective way to conserve species diversity is to conserve the ecosystems and habitats that permit this diversity. |
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| Harvesting strategies have been proposed that approximate natural disturbances, as a means to maintain species diversity and richness. |
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| Food availability could be reduced as land and ocean food productivity patterns shift and species diversity declines. |
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| In Lake Ontario, the reduced variation in water levels has resulted in coastal wetlands that are markedly poor in plant species diversity. |
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| There is a good deal of evidence that a direct connection exists between species diversity and human health, the scientists say. |
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| Despite the significance of carabids in orchard habitats there have been few published studies of species diversity in the 27,000 ha of Canadian tree fruit orchards. |
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| These impacts result in decreases in species diversity and ecological changes towards more opportunistic organisms. |
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| Bryophytes collected within and outside the park are being identified to determine species diversity and to determine whether there are any apparent disjunctions that would be indicative of a Beringian flora. |
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| The low species diversity and abundant resident population make soda lakes especially appealing environments in which to conduct investigations of trophic dynamics and ecosystem processes. |
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| To assess species diversity and abundance of aquatic oligochaete communities in order to determine the trophic status and relative health of benthic communities in the Great Lakes. |
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| These vital lake ecosystems are more vulnerable to impacts because of their smaller size and lower species diversity, which enables invasions to occur more rapidly and pervasively. |
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| In 2009 it's no longer necessary to tell people throughout the world that the environment is being destroyed on a global basis, that species diversity is steadily declining and that the climate is heating up. |
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| Most people think of biodiversity as relating solely to species diversity, forgetting that it also means diversity of biotopes, as well as genetic diversity. |
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| Only the city zoo offers greater species diversity. |
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| It attracted important attention to the distribution of species diversity. |
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| The species diversity in these primary tropical forests is without peer. |
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| This is often referred to as the latitudinal gradient in species diversity. |
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| It is difficult to quantify the value of an environmental value such as a healthy ecosystem, clean air, or species diversity. |
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| Perhaps the most impressive expression of species diversity is the density of species found in a given area of rainforest. |
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| Differences of opinion still exist about the impacts of industrial wood use on the living conditions of local populations and on species diversity. |
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| Thus, loss of plant species diversity in such cases is a general symptom of successional changes rather than a particular effect of invasive species. |
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| From this observable and very minor example of biological evolution, he created a general theory of evolution, that all species diversity is a result of biological evolution. |
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| Some ecologists also note that the intermediate disturbance hypothesis overemphasizes species diversity as a measure of recovery from a disturbance. |
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| Significant declines and extirpations in the southern limits of the salmon's Canadian range do however suggest the possibility of other candidates for elevated protection against the loss of species diversity. |
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| The maintenance of native species diversity in forest ecosystems provides multiple benefits, such as a continued flow of ecological goods and services. |
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| Permanent human settlement greatly disturbed the isolated ecosystem of thin, volcanic soils and limited species diversity. |
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| Europeans are attached to rural areas not only because they have aesthetically pleasing landscapes and rich flora and fauna, but also because they are highly differentiated with great species diversity. |
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| The effect of hypolimnion reservoir releases on fish distribution and species diversity. |
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| Plant species diversity is relatively low, since the flora must be tolerant of salt, complete or partial submersion, and anoxic mud substrate. |
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| Swimming crabs reach their greatest species diversity in the Pacific and Indian Oceans. |
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| As top level feeders in the kelp forest, harbor seals enhance species diversity and productivity. |
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| With 33,600 described species, fish exhibit greater species diversity than any other group of vertebrates. |
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| The vegetation of the region is mostly tropical but differences in topography, soil and climatic conditions increase species diversity. |
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| Thus, game management and cases using wild plant species were grouped within the wild species diversity, including an experience of wild species community seed bank developed in Burkina Faso. |
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| Also, in order to safeguard biodiversity in the remaining forest areas, ways and means must be developed to maintain and improve typical forest species diversity. |
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| The sampling plan design was to conduct an inventory of the caddisfly species diversity at FTC and did not include sampling sites on a specified time interval or frequency. |
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| The Devonian ended with a series of turnover pulses which killed off much of middle Paleozoic vertebrate life, without noticeably reducing species diversity overall. |
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| In California's Tomales Bay, native oyster presence is associated with higher species diversity of benthic invertebrates but other ecosystem services have not been studied. |
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| Evaluating Plant Species Diversity and Physiographical Factors in Natural Broad Leaf Forest. |
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