Scarab Beetle (Coleoptera: Scarabaeidae)
... vey numbers of other free living nematodes such as Rhabditis spp. as well as Pelodera spp .have been observed externally on the body surface of the beetles Overall, Meshkinshahr and Sarein had the highest and lowest diversity, respectively. Eight species were collected in Meshkinshahr (45.02%). One ...
... vey numbers of other free living nematodes such as Rhabditis spp. as well as Pelodera spp .have been observed externally on the body surface of the beetles Overall, Meshkinshahr and Sarein had the highest and lowest diversity, respectively. Eight species were collected in Meshkinshahr (45.02%). One ...
Critical problems for bird conservation in the Galápagos Islands
... We thank all of the wardens of the Galápagos National Park Service, volunteers, scholarship students and personnel of the Charles Darwin Research Station, and scientists of various universities, who between them have helped acquire information on the birds of Galápagos and the threats they face. Gal ...
... We thank all of the wardens of the Galápagos National Park Service, volunteers, scholarship students and personnel of the Charles Darwin Research Station, and scientists of various universities, who between them have helped acquire information on the birds of Galápagos and the threats they face. Gal ...
PDF
... through its trophic influence on other species. Prey fish have greater shadow prices than would be expected based on market value and predatory fish have lower shadow prices than may be expected based on market value. Our approach is relevant to economists interested in sustainability and green acco ...
... through its trophic influence on other species. Prey fish have greater shadow prices than would be expected based on market value and predatory fish have lower shadow prices than may be expected based on market value. Our approach is relevant to economists interested in sustainability and green acco ...
Effect of Prey Limitation on Competitive Interactions Between a
... plastic cup containing a 2 by 7 cm piece of paper towel. Our control treatments consisted of conspeciÞc pairs of C. novemnotata with both larvae in the pair from the same geographic origin (either eastern or western populations). All species pairings were made at two aphid densities, “low” (0.035 ⫾ ...
... plastic cup containing a 2 by 7 cm piece of paper towel. Our control treatments consisted of conspeciÞc pairs of C. novemnotata with both larvae in the pair from the same geographic origin (either eastern or western populations). All species pairings were made at two aphid densities, “low” (0.035 ⫾ ...
grazer diversity, functional redundancy, and productivity in seagrass
... throughout the northern hemisphere. By establishing treatments with all possible combinations of the three grazer species, we tested the degree of functional redundancy among grazers and their relative impacts on productivity. Grazer species composition strongly influenced eelgrass biomass accumulat ...
... throughout the northern hemisphere. By establishing treatments with all possible combinations of the three grazer species, we tested the degree of functional redundancy among grazers and their relative impacts on productivity. Grazer species composition strongly influenced eelgrass biomass accumulat ...
southern Yunnan, China - Universität Hohenheim
... natural succession leading to secondary forests. Such habitats may represent a matrix separating relatively intact plots of undisturbed old‐growth forest, but the current knowledge of the value of such matrix habitats for biodiversity conservation is still limited. Existing ...
... natural succession leading to secondary forests. Such habitats may represent a matrix separating relatively intact plots of undisturbed old‐growth forest, but the current knowledge of the value of such matrix habitats for biodiversity conservation is still limited. Existing ...
perennial pepperweed Lepidium latifolium L.
... America. Infestations have also been found in Australia (eFloras 2008). Perennial pepperweed has not been recorded in Alaska. Management Once established, perennial pepperweed can be very difficult to remove. Mechanical methods are unlikely to control perennial pepperweed because new plants quickly ...
... America. Infestations have also been found in Australia (eFloras 2008). Perennial pepperweed has not been recorded in Alaska. Management Once established, perennial pepperweed can be very difficult to remove. Mechanical methods are unlikely to control perennial pepperweed because new plants quickly ...
pdf file - UNM Biology
... period. Initial treatments included removal of some or all rodent and ant species in a 2 x 2 factorial design, or addition of millet seeds (see Brown and Munger 1985 for plot assignments and details of the manipulations). An additional treatment. removal of only the largest species of kangaroo rat ( ...
... period. Initial treatments included removal of some or all rodent and ant species in a 2 x 2 factorial design, or addition of millet seeds (see Brown and Munger 1985 for plot assignments and details of the manipulations). An additional treatment. removal of only the largest species of kangaroo rat ( ...
Biotechnology and Plant Health International Regulatory Approaches
... the introduction of, control or eradicate those alien species which threaten ecosystems, habitats or species) many provisions and standards of the IPPC are directly relevant to, or overlap with the Interim Guiding Principles (Now: Guiding Principles) of the CBD standards should be reviewed to ensure ...
... the introduction of, control or eradicate those alien species which threaten ecosystems, habitats or species) many provisions and standards of the IPPC are directly relevant to, or overlap with the Interim Guiding Principles (Now: Guiding Principles) of the CBD standards should be reviewed to ensure ...
Exploring the Lotka-Volterra Competition Model using Two Species
... The structure of a community will be determined in part by the dynamics of the interactions between the species in the community. Interactions between two species can be direct or indirect (i.e., mediated through other species). In even a simple natural community, hundreds of different species of pl ...
... The structure of a community will be determined in part by the dynamics of the interactions between the species in the community. Interactions between two species can be direct or indirect (i.e., mediated through other species). In even a simple natural community, hundreds of different species of pl ...
from pik-potsdam.de - Potsdam Institute for Climate Impact
... the warmest interglacial periods, forests climbed higher towards the summits of low mountains (1800–2300 m), thereby reducing many high elevation orophyte populations. Many isolated orophytes now living in such refugia as the peaks of ...
... the warmest interglacial periods, forests climbed higher towards the summits of low mountains (1800–2300 m), thereby reducing many high elevation orophyte populations. Many isolated orophytes now living in such refugia as the peaks of ...
The Linkage between Conservation Strategies for Large Carnivores
... have gone extinct. For all these species and most forested habitats, the 19th and early 20th centuries were the bottlenecks when a variety of factors coincided such that human pressure on land and resources was at its maximum. At the start of the 21st century the situation has changed dramatically. ...
... have gone extinct. For all these species and most forested habitats, the 19th and early 20th centuries were the bottlenecks when a variety of factors coincided such that human pressure on land and resources was at its maximum. At the start of the 21st century the situation has changed dramatically. ...
Generalities in grazing and browsing ecology du Toit, Johan T
... has not previously been formalized for controlling the contingency problem in community ecology. Here we demonstrate the utility of the framework for clarifying generalities in grazing and browsing ecology. Our focus is on animal– plant and animal–animal interactions in terrestrial communities that ...
... has not previously been formalized for controlling the contingency problem in community ecology. Here we demonstrate the utility of the framework for clarifying generalities in grazing and browsing ecology. Our focus is on animal– plant and animal–animal interactions in terrestrial communities that ...
Ch 54 - Houston ISD
... Concept 54.1: Community interactions are classified by whether they help, harm, or have no effect on the species involved • Ecologists call relationships between species in a community interspecific interactions • Examples are competition, predation, herbivory, and symbiosis (parasitism, mutualism, ...
... Concept 54.1: Community interactions are classified by whether they help, harm, or have no effect on the species involved • Ecologists call relationships between species in a community interspecific interactions • Examples are competition, predation, herbivory, and symbiosis (parasitism, mutualism, ...
sea urchins on the move - Integrative Biology
... Abstract. The island of Mo’orea in French Polynesia functions as a model system to study the biological and ecological concept of niche differentiation, whereby two or more species are forced into different habitats so as to avoid competition with each other. In the waters surrounding this island, t ...
... Abstract. The island of Mo’orea in French Polynesia functions as a model system to study the biological and ecological concept of niche differentiation, whereby two or more species are forced into different habitats so as to avoid competition with each other. In the waters surrounding this island, t ...
Chapter 54
... Concept 54.1: Community interactions are classified by whether they help, harm, or have no effect on the species involved • Ecologists call relationships between species in a community interspecific interactions • Examples are competition, predation, herbivory, and symbiosis (parasitism, mutualism, ...
... Concept 54.1: Community interactions are classified by whether they help, harm, or have no effect on the species involved • Ecologists call relationships between species in a community interspecific interactions • Examples are competition, predation, herbivory, and symbiosis (parasitism, mutualism, ...
54_Lecture_Presentation - APBiology2015-2016
... Concept 54.1: Community interactions are classified by whether they help, harm, or have no effect on the species involved • Ecologists call relationships between species in a community interspecific interactions • Examples are competition, predation, herbivory, and symbiosis (parasitism, mutualism, ...
... Concept 54.1: Community interactions are classified by whether they help, harm, or have no effect on the species involved • Ecologists call relationships between species in a community interspecific interactions • Examples are competition, predation, herbivory, and symbiosis (parasitism, mutualism, ...
Traits fonctionnels des arbres : de la plasticité - Archipel
... Schematic of t he experimental design (replicated four times) . Communit ies are implemented along a gradient of species richness (SR) and functional diversity (FD ). Smaller superposed squares indicate t he replication of different communit ies with similar FD resulting in a total of 14 two-sp ecie ...
... Schematic of t he experimental design (replicated four times) . Communit ies are implemented along a gradient of species richness (SR) and functional diversity (FD ). Smaller superposed squares indicate t he replication of different communit ies with similar FD resulting in a total of 14 two-sp ecie ...
Designing marine reserves for interacting species: Insights
... the inclusion of species interactions as a critical gap in marine reserve theory. In addition to primarily being singlespecies models, the existing theoretical investigations often focus on the implications of reserve establishment for fisheries outside protected areas (Gerber et al., 2003). On the ...
... the inclusion of species interactions as a critical gap in marine reserve theory. In addition to primarily being singlespecies models, the existing theoretical investigations often focus on the implications of reserve establishment for fisheries outside protected areas (Gerber et al., 2003). On the ...
The Marine Outcomes Monitoring framework
... the 1950’s, the population recovered for a short period only to be over-fished once more. Failure to conserve the spawners, combined with fishing of a very high intensity reduced the stocks to low abundance levels. Presently, after years of no direct fishing effort, there are small signs of a popula ...
... the 1950’s, the population recovered for a short period only to be over-fished once more. Failure to conserve the spawners, combined with fishing of a very high intensity reduced the stocks to low abundance levels. Presently, after years of no direct fishing effort, there are small signs of a popula ...
Section 5 Existing Terrestrial Environment
... dominate in summer, spring and most of autumn. In general, westerly winds are dominant in the morning, shifting to north-westerly in the afternoon, with an accompanying increase in speed (BoM 2009a). In winter, east to south-easterly winds are dominant in the mornings and shift to north-easterlies i ...
... dominate in summer, spring and most of autumn. In general, westerly winds are dominant in the morning, shifting to north-westerly in the afternoon, with an accompanying increase in speed (BoM 2009a). In winter, east to south-easterly winds are dominant in the mornings and shift to north-easterlies i ...
Grasslands, Shrublands, Deserts
... temperatures and howling winds. While temperate perennial grasses regenerate from dormancy each spring by sprouting from their roots, grasses in the tropics do not enter a dormancy period and instead grow year-round. Tropical grasslands tend to be located between forests and deserts (Simon 1995). Cl ...
... temperatures and howling winds. While temperate perennial grasses regenerate from dormancy each spring by sprouting from their roots, grasses in the tropics do not enter a dormancy period and instead grow year-round. Tropical grasslands tend to be located between forests and deserts (Simon 1995). Cl ...
Bifrenaria
Bifrenaria, abbreviated Bif. in horticultural trade, is a genus of plant in family Orchidaceae. It contains 20 species found in Panama, Trinidad and South America. There are no known uses for them, but their abundant, and at first glance artificial, flowers, make them favorites of orchid growers.The genus can be split in two clearly distinct groups: one of highly robust plants with large flowers, that encompass the first species to be classified under the genus Bifrenaria; other of more delicate plants with smaller flowers occasionally classified as Stenocoryne or Adipe. There are two additional species that are normally classified as Bifrenaria, but which molecular analysis indicate to belong to different orchid groups entirely. One is Bifrenaria grandis which is endemic to Bolívia and which is now placed in Lacaena, and Bifrenaria steyermarkii, an inhabitant of the northern Amazon Forest, which does not have an alternative classification.