Avian and Plant Species Diversity and their Inter
... distribution frequency and density. They showed uniform occurrence in almost all the sampling sites, while Azadirachta indica, Propsopis juliflora, Acacia nilotica was observed to have low distribution frequency and uneven distribution. As regard the composition of herbs, Amarnthus virdis, Biden pil ...
... distribution frequency and density. They showed uniform occurrence in almost all the sampling sites, while Azadirachta indica, Propsopis juliflora, Acacia nilotica was observed to have low distribution frequency and uneven distribution. As regard the composition of herbs, Amarnthus virdis, Biden pil ...
Competition - practical ecology
... If herbivores prefer to feed on the superior competitor, it reduces the growth, survival, or reproduction of that species. The same is true of predators, pathogens, and mutualists: change in abundance of such species can change the outcome of competition among the species with which they interact. ...
... If herbivores prefer to feed on the superior competitor, it reduces the growth, survival, or reproduction of that species. The same is true of predators, pathogens, and mutualists: change in abundance of such species can change the outcome of competition among the species with which they interact. ...
Climate change impacts on marine ecosystems
... Within its habitat an organism is influenced by various environ- ...
... Within its habitat an organism is influenced by various environ- ...
The Problem of Research on Endangered Species: Are Experiments
... We are conducting an experiment using northwestern salamanders to learn about the stressors that affect amphibians in timber-harvested areas. We have placed juvenile northwestern salamanders in large field enclosures in harvested and forested sites, and are manipulating food availability in half the ...
... We are conducting an experiment using northwestern salamanders to learn about the stressors that affect amphibians in timber-harvested areas. We have placed juvenile northwestern salamanders in large field enclosures in harvested and forested sites, and are manipulating food availability in half the ...
changing values of malaysian forests: the challenge of biodiversity
... forest fragmentation will lead to restriction of genetic variability before it will lead to species’ extinction. Many species are already restricted to ecological islands, isolated from gene exchange over the few decades during which we have the opportunity to influence the fate of biodiversity. For ...
... forest fragmentation will lead to restriction of genetic variability before it will lead to species’ extinction. Many species are already restricted to ecological islands, isolated from gene exchange over the few decades during which we have the opportunity to influence the fate of biodiversity. For ...
An Overview of Herbivory as an Ecological Process
... amount of biomass producing that productivity declines, and NPP ...
... amount of biomass producing that productivity declines, and NPP ...
LAO Overview of Invasive Species Management in California
... Activities. CalFire removes invasive species through prescribed burning and pesticide applications, researches diseases spread by invasive species, monitors forests for the extent of invasive species, and restricts the movement of materials that could spread invasive species. ...
... Activities. CalFire removes invasive species through prescribed burning and pesticide applications, researches diseases spread by invasive species, monitors forests for the extent of invasive species, and restricts the movement of materials that could spread invasive species. ...
Known knowns and unknowns in biology
... data loss and movement through the categories. We show that so-called known knowns in terms of global biodiversity are not as accurately known as thought, despite 500 years or more of world-wide collecting and recording of eukaryotic species. In addition, as fast as new species, living or fossil, ar ...
... data loss and movement through the categories. We show that so-called known knowns in terms of global biodiversity are not as accurately known as thought, despite 500 years or more of world-wide collecting and recording of eukaryotic species. In addition, as fast as new species, living or fossil, ar ...
Community Structure, Population Control, and Competition
... resource is obviously light, but in arid regions water may be the critical factor, and there are spectacular cases of limitation throughthe exhaustion of a critical mineral. The final observation in this group is that there are temporary exceptions to the general lack of depletion of green plants by ...
... resource is obviously light, but in arid regions water may be the critical factor, and there are spectacular cases of limitation throughthe exhaustion of a critical mineral. The final observation in this group is that there are temporary exceptions to the general lack of depletion of green plants by ...
Invasive Species
... crayfish is native to the Ohio River system of Ohio, Kentucky and Indiana, but has been introduced to many northern lakes and streams where it is a cause for concern. Rusty crayfish may have been introduced through bait bucket dumping or released from an aquarium, though there is no way of knowing f ...
... crayfish is native to the Ohio River system of Ohio, Kentucky and Indiana, but has been introduced to many northern lakes and streams where it is a cause for concern. Rusty crayfish may have been introduced through bait bucket dumping or released from an aquarium, though there is no way of knowing f ...
Document
... remnants in the Wheatbelt. Although these private landholdings lie within the half of the shire that retains 50% of its vegetation, the discontinuity of vegetation cover hinders species’ movement and interferes with genetic distribution. Species in isolated remnants are also more susceptible to c ...
... remnants in the Wheatbelt. Although these private landholdings lie within the half of the shire that retains 50% of its vegetation, the discontinuity of vegetation cover hinders species’ movement and interferes with genetic distribution. Species in isolated remnants are also more susceptible to c ...
The information in this document covers the IB syllabus for topic 5
... characteristics of new members of the group. If several members of a group have a particular characteristic, it is likely that another species in this group will have the same characteristic. ...
... characteristics of new members of the group. If several members of a group have a particular characteristic, it is likely that another species in this group will have the same characteristic. ...
Appendix 1: Translocation project form
... contact Scottish Natural Heritage. For low risk and uncontentious translocations, filling in the form should be straightforward. For instance, in sections 8-10, where your responses fall into the ‘green light’ category, just a few words are needed explaining that there are no appreciable risks or le ...
... contact Scottish Natural Heritage. For low risk and uncontentious translocations, filling in the form should be straightforward. For instance, in sections 8-10, where your responses fall into the ‘green light’ category, just a few words are needed explaining that there are no appreciable risks or le ...
Herb layer dynamics of primeval fir
... - frequencies of herb layer species (including woody species) recorded on two-hundred 0.25 m2 square subplots located along systematically placed belt transects within the plot (Fig. 1) - absolute abundance of tree species (separately according to vertical layers) counted on each transect - diameter ...
... - frequencies of herb layer species (including woody species) recorded on two-hundred 0.25 m2 square subplots located along systematically placed belt transects within the plot (Fig. 1) - absolute abundance of tree species (separately according to vertical layers) counted on each transect - diameter ...
information cards
... Native to: the Caspian Sea region of Asia Invasive in: the Great Lakes, USA. They were first observed in Lake St. Clair near Detroit in 1988, and spread quickly. ...
... Native to: the Caspian Sea region of Asia Invasive in: the Great Lakes, USA. They were first observed in Lake St. Clair near Detroit in 1988, and spread quickly. ...
Biodiversity of the Waitakere Ranges Heritage
... 1 native mammal (long-tailed bat) Although records are not complete, it appears that we have lost 13 native bird species from the Ranges and 17 species from the lowlands. The short-tailed bat was once common in the region but has not been recorded for some time. In contrast to the Waitakere Ranges, ...
... 1 native mammal (long-tailed bat) Although records are not complete, it appears that we have lost 13 native bird species from the Ranges and 17 species from the lowlands. The short-tailed bat was once common in the region but has not been recorded for some time. In contrast to the Waitakere Ranges, ...
Learning about nematodes
... Nematodes can be divided into three groups according to their feeding habits: free-living; zooparasitic; and plant-parasitic or phytonematodes. Nematodes do not vary considerably in size, being microscopic (= invisible to the naked eye) in general (see photo below). Their body length varies from ten ...
... Nematodes can be divided into three groups according to their feeding habits: free-living; zooparasitic; and plant-parasitic or phytonematodes. Nematodes do not vary considerably in size, being microscopic (= invisible to the naked eye) in general (see photo below). Their body length varies from ten ...
Nature Unbound: Chapter 8
... bird species than deciduous forests, which have ground, understory and canopy vegetation layers (Figure 8.6). They reasoned that more layers of vegetation provide more niches for a greater diversity of species. This relationship holds up for a number of different organisms and habitats. Coral reefs, ...
... bird species than deciduous forests, which have ground, understory and canopy vegetation layers (Figure 8.6). They reasoned that more layers of vegetation provide more niches for a greater diversity of species. This relationship holds up for a number of different organisms and habitats. Coral reefs, ...
Ozone Effects to Plants ROMO
... Ecology describes broader ecological effects from shifts in diatoms • Nitrogen loving species are less nutritious – junk food for other aquatic life • Described as raising a growing teenager on marshmallows EXPERIENCE YOUR AMER ICA ...
... Ecology describes broader ecological effects from shifts in diatoms • Nitrogen loving species are less nutritious – junk food for other aquatic life • Described as raising a growing teenager on marshmallows EXPERIENCE YOUR AMER ICA ...
An evaluation of Israeli forestry trees and shrubs as potential forage
... did not grow in all the survey sites, and some of the survey species were observed outside ...
... did not grow in all the survey sites, and some of the survey species were observed outside ...
California Status Factors
... Life span of fungus is not known. Generally long-lived and presumed slower-growing fungi often require several years of growth to establish a viable population/community, ...
... Life span of fungus is not known. Generally long-lived and presumed slower-growing fungi often require several years of growth to establish a viable population/community, ...
A New Record of Cymatium encausticum - e-ased
... known to occur in tropical seawaters including the Philippine Islands along with its congeners C. gutturnium, C. springsteeni, and C. exile. A single individual of the species was collected from Jejudo Island by SCUBA diving and morphological features were observed using a stereomicroscope. This is ...
... known to occur in tropical seawaters including the Philippine Islands along with its congeners C. gutturnium, C. springsteeni, and C. exile. A single individual of the species was collected from Jejudo Island by SCUBA diving and morphological features were observed using a stereomicroscope. This is ...
A Physical Basis of Evolution and Speculation on an
... gods or uniqueness theorems as the supersymetry principle, were more complete and readily understood by everyone. In the last century, the tools of science have developed to such an extent that they are more advanced than required to dissolve the dichotomy between physics and biology and to retire t ...
... gods or uniqueness theorems as the supersymetry principle, were more complete and readily understood by everyone. In the last century, the tools of science have developed to such an extent that they are more advanced than required to dissolve the dichotomy between physics and biology and to retire t ...
Give nature a chance - Self
... high biological diversity, and [c] species or groups of species of special interest. There seems to be no single, universal scale appropriate for understanding all ecological processes, but the consensus is that most protected areas need to be large for an ecosystem to be fully functional and self s ...
... high biological diversity, and [c] species or groups of species of special interest. There seems to be no single, universal scale appropriate for understanding all ecological processes, but the consensus is that most protected areas need to be large for an ecosystem to be fully functional and self s ...
05-06
... that many exotic plants cannot tolerate. In addition, park lands in Alaska have remained relatively free of man-made disturbances such as livestock grazing, wildfire suppression, and altered hydrological regimes that encourage the introduction of exotic species, and they still have all of the major ...
... that many exotic plants cannot tolerate. In addition, park lands in Alaska have remained relatively free of man-made disturbances such as livestock grazing, wildfire suppression, and altered hydrological regimes that encourage the introduction of exotic species, and they still have all of the major ...
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.