The Nonconcept of Species Diversity: A Critique and Alternative
... such positive correlation is neither a biological nor plants in a community is usually much greater than a mathematical necessity; gradients can exist along the total productivity of all other organisms (as a which increases in species diversity are accompanied result of respiration losses), the mos ...
... such positive correlation is neither a biological nor plants in a community is usually much greater than a mathematical necessity; gradients can exist along the total productivity of all other organisms (as a which increases in species diversity are accompanied result of respiration losses), the mos ...
Feeding habits of non-ocypodid crabs from two mangrove forests in
... (Vannini and Ruwa, 1994; Cannicci et al. 1996a,b) and feed directly on fresh leaves, while other Episesarma species of this region are known to climb and feed only on young mangrove trees (Sivasothi et al., 1994). It is important to note that it is not uncommon to find animal matter in the stomachs ...
... (Vannini and Ruwa, 1994; Cannicci et al. 1996a,b) and feed directly on fresh leaves, while other Episesarma species of this region are known to climb and feed only on young mangrove trees (Sivasothi et al., 1994). It is important to note that it is not uncommon to find animal matter in the stomachs ...
Supersized MPAs and the marginalization of species conservation
... are often the conservation of a political opportunity rather than any unique biological feature and rarely has sufficient science come into the planning (Sale et al., 2005). MPAs are alluring because there is no apparent need for science to guide their designation because the concept of ring-fencing ...
... are often the conservation of a political opportunity rather than any unique biological feature and rarely has sufficient science come into the planning (Sale et al., 2005). MPAs are alluring because there is no apparent need for science to guide their designation because the concept of ring-fencing ...
5 THE ECOLOGICAL NICHES OF LEPTOSPERMUM SCOPAR/UM
... from evidences such as those presented by Molloy et al. (1963), Molloy (1969) and from knowledge of the present-day patterns of Vegetation in undisturbed localities. At this time, before the Maori came to New Zealand, forest occurred throughout most of the country, from sea-level to about 1500 m. Le ...
... from evidences such as those presented by Molloy et al. (1963), Molloy (1969) and from knowledge of the present-day patterns of Vegetation in undisturbed localities. At this time, before the Maori came to New Zealand, forest occurred throughout most of the country, from sea-level to about 1500 m. Le ...
Forests, Competition and Succession
... what their food supply would permit. This is often the case with herbivorous insects and its can also occur in plant communities when herbivores and pathogens increase the species richness of plant communities by reducing the ability of any one species to competitively dominate others. Higher order ...
... what their food supply would permit. This is often the case with herbivorous insects and its can also occur in plant communities when herbivores and pathogens increase the species richness of plant communities by reducing the ability of any one species to competitively dominate others. Higher order ...
Uluru - Kata Tjuta National Park - Department of Infrastructure
... Fire: In the period 1997-2005, most parts of the site (99%) were burnt fewer than two times and no parts of the site were burnt more than four times. In 1976, wildfires burnt about 75% of the national park and large uncontrolled wildfires such as this are a significant threat to the conservation val ...
... Fire: In the period 1997-2005, most parts of the site (99%) were burnt fewer than two times and no parts of the site were burnt more than four times. In 1976, wildfires burnt about 75% of the national park and large uncontrolled wildfires such as this are a significant threat to the conservation val ...
Invasiveness in plant communities with feedbacks
... interactions between the invader and resident community, not included in the previous models of Levine et al. (2006) or Eppstein et al. (2006), could also affect the rate of invasive spread. Von Holle & Simberloff (2005) showed that success of propagules in the forest understory was, in fact, positi ...
... interactions between the invader and resident community, not included in the previous models of Levine et al. (2006) or Eppstein et al. (2006), could also affect the rate of invasive spread. Von Holle & Simberloff (2005) showed that success of propagules in the forest understory was, in fact, positi ...
Differing effects on dicots and monocots by Centaurea
... plants may have no or only minor ecosystem impacts. It is possible that with more knapweeds in an area, it may increase detectable impacts on plant species richness. Abundance of individual plants has also been shown to be lower in plant communities invaded by non-native plant species (Hejda et al. ...
... plants may have no or only minor ecosystem impacts. It is possible that with more knapweeds in an area, it may increase detectable impacts on plant species richness. Abundance of individual plants has also been shown to be lower in plant communities invaded by non-native plant species (Hejda et al. ...
Impacts of multiple stressors on biodiversity and ecosystem
... been chronically exposed to toxins are relatively less affected by exposure to new pollutants (Blanck and Wängberg 1988). This scenario represents a strong antagonistic interaction between stressors A and B because the former suppresses the effect of the latter, resulting in a combined impact that ...
... been chronically exposed to toxins are relatively less affected by exposure to new pollutants (Blanck and Wängberg 1988). This scenario represents a strong antagonistic interaction between stressors A and B because the former suppresses the effect of the latter, resulting in a combined impact that ...
Alicia_Ref-Titles - Western Oregon University
... salt marsh habitat provides a unique opportunity to investigate how invasives establish in new environments. We used morphology, cytology, and AFLP genotyping to identify taxa and clonal diversity in roadside and salt marsh populations. We conducted a greenhouse study to determine the ability to tol ...
... salt marsh habitat provides a unique opportunity to investigate how invasives establish in new environments. We used morphology, cytology, and AFLP genotyping to identify taxa and clonal diversity in roadside and salt marsh populations. We conducted a greenhouse study to determine the ability to tol ...
Kappel (2005) - the Biology Department
... the potential to be a major threat to both target and non- threats were not separated, as this information was not contarget species through direct harvest, bycatch, depletion of sistently provided. Multiple threats were recorded for most prey, habitat alteration, or other indirect effects. To desig ...
... the potential to be a major threat to both target and non- threats were not separated, as this information was not contarget species through direct harvest, bycatch, depletion of sistently provided. Multiple threats were recorded for most prey, habitat alteration, or other indirect effects. To desig ...
Natural Grasslands on Alluvial Plains Fact Sheet
... All part of a community Ecological communities are groups of plants, animals and other organisms that naturally occur together. The structure and composition are determined by environmental factors such as climate, landscape position, soil, aspect and altitude. While a particular ecological communit ...
... All part of a community Ecological communities are groups of plants, animals and other organisms that naturally occur together. The structure and composition are determined by environmental factors such as climate, landscape position, soil, aspect and altitude. While a particular ecological communit ...
Do individual plant species show predictable responses to nitrogen
... A number of experiments have addressed how increases in nitrogen availability increase the productivity and decrease the diversity of plant communities. We lack, however, a rigorous mechanistic understanding of how changes in abundance of particular species combine to produce changes in community pr ...
... A number of experiments have addressed how increases in nitrogen availability increase the productivity and decrease the diversity of plant communities. We lack, however, a rigorous mechanistic understanding of how changes in abundance of particular species combine to produce changes in community pr ...
Interspecific Dominance Via Vocal Interactions Mediates Altitudinal
... Competition for limited resources often results in the evolution of displays that minimize direct physical combat (Maynard Smith and Harper 2004). In many species, signals reduce escalation of aggressive contests by conveying information about resource-holding potential (Parker 1974) to a network of ...
... Competition for limited resources often results in the evolution of displays that minimize direct physical combat (Maynard Smith and Harper 2004). In many species, signals reduce escalation of aggressive contests by conveying information about resource-holding potential (Parker 1974) to a network of ...
Relationships between species diversity and evenness of
... . In addition, as they colonize and decompose carrions rapidly, they have been used recently as scientific techniques in forensic sciences, majorly to establish what is called a Post Mortem Interval (PMI), which is referred to as the time that has elapsed when a human or an animal dies [3, 4]). A di ...
... . In addition, as they colonize and decompose carrions rapidly, they have been used recently as scientific techniques in forensic sciences, majorly to establish what is called a Post Mortem Interval (PMI), which is referred to as the time that has elapsed when a human or an animal dies [3, 4]). A di ...
Species at Risk Inventory – CFB Borden
... southeast, in open sandy areas. It may be prudent to restrict access and traffic in these areas during the nesting season to avoid disturbance to the nests, as well as roadkill through vehicular movements. Blanding’s Turtle is a medium-sized (up to 27 cm carapace length) freshwater turtle which inha ...
... southeast, in open sandy areas. It may be prudent to restrict access and traffic in these areas during the nesting season to avoid disturbance to the nests, as well as roadkill through vehicular movements. Blanding’s Turtle is a medium-sized (up to 27 cm carapace length) freshwater turtle which inha ...
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... exemption as being problematic in the face of the clear and unqualified statutory language imposing the permit requirement. Thus, the Senate Report stated that: The amendment to section 312 made by this bill is intended to address discharges that are currently subject to the Federal Water Pollution ...
... exemption as being problematic in the face of the clear and unqualified statutory language imposing the permit requirement. Thus, the Senate Report stated that: The amendment to section 312 made by this bill is intended to address discharges that are currently subject to the Federal Water Pollution ...
3.3
... submitted to the CDFG for “any activity that may substantially divert or obstruct the natural flow or substantially change the bed, channel, or bank of any river, stream, or lake.” The CDFG reviews the proposed actions and, if necessary, submits to the applicant a proposal for measures to protect af ...
... submitted to the CDFG for “any activity that may substantially divert or obstruct the natural flow or substantially change the bed, channel, or bank of any river, stream, or lake.” The CDFG reviews the proposed actions and, if necessary, submits to the applicant a proposal for measures to protect af ...
Avian Conservation under the Endangered Species Act
... by range size (mean annual expenditure/range size; r 2 0.03, p 0.051) and lost statistical significance when only mainland species were considered in the analysis (r 2 0.03, p 0.143). It was possible that spending by states and other federal agencies negatively affected how well the USFWS co ...
... by range size (mean annual expenditure/range size; r 2 0.03, p 0.051) and lost statistical significance when only mainland species were considered in the analysis (r 2 0.03, p 0.143). It was possible that spending by states and other federal agencies negatively affected how well the USFWS co ...
Genetic diversity
... ecosystems (forests and grasslands) are the first to be modified by humans. Pressures to modify the environment are greatest in areas with high population density. ...
... ecosystems (forests and grasslands) are the first to be modified by humans. Pressures to modify the environment are greatest in areas with high population density. ...
Competition - Cal State LA
... • A concept that encompasses all of the individual environmental requirements of a species • This is definitely an abstract concept, but it helps us to organize and explain ecological phenomena ...
... • A concept that encompasses all of the individual environmental requirements of a species • This is definitely an abstract concept, but it helps us to organize and explain ecological phenomena ...
11:45 Heupel M
... influencing behaviour 3) kill smaller predators for food and to avoid competition 4) suppress mesopredators through fear and dominance ...
... influencing behaviour 3) kill smaller predators for food and to avoid competition 4) suppress mesopredators through fear and dominance ...
The measure of order and disorder in the distribution of species in
... Fig. 1. A minimum, "all-white" matrix The minimum such matrix that may be defined is an "all-white" matrix, where one island has n species and the remaining m - 1 islands possess only one species each (Fig. 1). Although such a matrix is perfectly nested, it contains very little information about spe ...
... Fig. 1. A minimum, "all-white" matrix The minimum such matrix that may be defined is an "all-white" matrix, where one island has n species and the remaining m - 1 islands possess only one species each (Fig. 1). Although such a matrix is perfectly nested, it contains very little information about spe ...
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.