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... Morphological parameters: Dc was determined by morphological comparison of repeated bathymetric surveys of 6 profiles, each separated by 20 m alongshore. A set of 84 profiles for 14 different survey periods was obtained from July 2001 to November 2003. For the purposes of this study, only 7 bathymet ...
... Morphological parameters: Dc was determined by morphological comparison of repeated bathymetric surveys of 6 profiles, each separated by 20 m alongshore. A set of 84 profiles for 14 different survey periods was obtained from July 2001 to November 2003. For the purposes of this study, only 7 bathymet ...
Fish population size, and not density, as the determining factor of
... parameters are, to some extent, determined by characteristics of the host population or of its habitat. Recent studies have supported predictions derived from epidemiological models regarding the influence of host population density : parasite abundance and parasite species richness are expected to i ...
... parameters are, to some extent, determined by characteristics of the host population or of its habitat. Recent studies have supported predictions derived from epidemiological models regarding the influence of host population density : parasite abundance and parasite species richness are expected to i ...
BIOLOGY Monday 24 Apr 2017
... Note: keystone species article worksheet & POGIL - Ecological Relationships can be located @ https://www.steilacoom.k12.wa.us/Page/5840 ...
... Note: keystone species article worksheet & POGIL - Ecological Relationships can be located @ https://www.steilacoom.k12.wa.us/Page/5840 ...
Selecting umbrella species for conservation
... umbrella species can protect target groups or habitats provided they are carefully chosen using quantitative and standardized methods and explicit criteria (Carroll et al., 2001; Favreau et al., 2006). Umbrella species should also be chosen at the appropriate scale, represent ecologically-linked tax ...
... umbrella species can protect target groups or habitats provided they are carefully chosen using quantitative and standardized methods and explicit criteria (Carroll et al., 2001; Favreau et al., 2006). Umbrella species should also be chosen at the appropriate scale, represent ecologically-linked tax ...
A growth cline in encrusting benthos along a latitudinal gradient
... in size from a few cm2 to a few hundred cm2 surface area. All colonies of each of the 3 study species were counted and measured. The mean proportion of each age class (within localities) was assessed by averaging the number of 2, 3, 4 and 5 yr class colonies for every hundred 1 yr old colonies count ...
... in size from a few cm2 to a few hundred cm2 surface area. All colonies of each of the 3 study species were counted and measured. The mean proportion of each age class (within localities) was assessed by averaging the number of 2, 3, 4 and 5 yr class colonies for every hundred 1 yr old colonies count ...
Opposing intraspecific vs. interspecific diversity effects on
... et al. 1996). The biodiversity component of BEF experiments is strongly focused on the effects of species diversity (Balvanera et al. 2006). Such effects of species diversity on ecosystem functions are caused by functional trait diversity among species (Hooper et al. 2005) and are of central inter ...
... et al. 1996). The biodiversity component of BEF experiments is strongly focused on the effects of species diversity (Balvanera et al. 2006). Such effects of species diversity on ecosystem functions are caused by functional trait diversity among species (Hooper et al. 2005) and are of central inter ...
D3.1 Annex 8b Section 6 Environmental impact pests
... In this question we rate the current environmental impact in other invaded regions that can be used as indicator for determining the potential environmental impact in the PRA area (Q. 6.09). If the species has not invaded any other area, or if the invasion is too recent and too little is known about ...
... In this question we rate the current environmental impact in other invaded regions that can be used as indicator for determining the potential environmental impact in the PRA area (Q. 6.09). If the species has not invaded any other area, or if the invasion is too recent and too little is known about ...
The Effects of Urban Sprawl on Birds at Multiple Levels
... of birds along gradients of urban land use in southwestern Ohio and northern California and by examining patterns at the individual, species, community, landscape, and continental levels. I do this by assessing the distribution and abundance of all bird species occupying sites of differing land-use ...
... of birds along gradients of urban land use in southwestern Ohio and northern California and by examining patterns at the individual, species, community, landscape, and continental levels. I do this by assessing the distribution and abundance of all bird species occupying sites of differing land-use ...
Sexratio meiotic drive and interspecific competition
... a continuous time model that contains both competition and sex-ratio meiotic drive. The equilibria are identical, though the integrated model allows us to consider the impact of more parameters (e.g. a genotype-specific mortality rate in the species with sex-ratio meiotic drive). For the sake of cla ...
... a continuous time model that contains both competition and sex-ratio meiotic drive. The equilibria are identical, though the integrated model allows us to consider the impact of more parameters (e.g. a genotype-specific mortality rate in the species with sex-ratio meiotic drive). For the sake of cla ...
Habitat and Niche
... 1. Flickr:Free Photo Fun. When the Tarpan horse breed became extinct, the Konik horse breed occupied its niche in the ecosystem. CC BY 2.0 2. Galen Parks Smith (Wikimedia: GSmith). The Kudzu is a species that has no natural predators and outcompeted existing vines to take over their niches. CC BY 2. ...
... 1. Flickr:Free Photo Fun. When the Tarpan horse breed became extinct, the Konik horse breed occupied its niche in the ecosystem. CC BY 2.0 2. Galen Parks Smith (Wikimedia: GSmith). The Kudzu is a species that has no natural predators and outcompeted existing vines to take over their niches. CC BY 2. ...
Assemblage dynamics of exotic herpetofauna on Jupiter campus of
... is native to Cuba. Its common name is the Cuban brown anole. Anolis sagrei is light brown to dark brown in metachrosis. The dewlap (throat flap) is red or reddish orange with a light cream or yellow border. Males of the species have a nuchal and dorsal crest, which in some males extends the length o ...
... is native to Cuba. Its common name is the Cuban brown anole. Anolis sagrei is light brown to dark brown in metachrosis. The dewlap (throat flap) is red or reddish orange with a light cream or yellow border. Males of the species have a nuchal and dorsal crest, which in some males extends the length o ...
420-1373-2-RV
... Attempts have been made to elucidate succession regularity of populations and communities in manmanipulated or natural restoration processes (Jiang & Shen 2007). There are generalised expectations during secondary plant succession and these including a high degree of predictability in the sequence o ...
... Attempts have been made to elucidate succession regularity of populations and communities in manmanipulated or natural restoration processes (Jiang & Shen 2007). There are generalised expectations during secondary plant succession and these including a high degree of predictability in the sequence o ...
Studying insect diversity in the tropics
... Our thesis here is that insect ecologists can learn from the success plant ecologists have had in understanding tropical diversity. We suggest this is based on two main foundations: the availability of complete or near-complete £oral inventories for a number of di¡erent areas, and the intensive stud ...
... Our thesis here is that insect ecologists can learn from the success plant ecologists have had in understanding tropical diversity. We suggest this is based on two main foundations: the availability of complete or near-complete £oral inventories for a number of di¡erent areas, and the intensive stud ...
Prey species use a variety of mechanisms to escape from their
... times shell-twisting. On vertical surfaces, snails moved upward quickly and dropped-off if contact with tube feet continued (Table 11). Once a snail was captured by Pisaster, it withdrew quickly into its shell. Initial responses to attacks from Pycnopodia were similar to those of Tegura pulligo: sna ...
... times shell-twisting. On vertical surfaces, snails moved upward quickly and dropped-off if contact with tube feet continued (Table 11). Once a snail was captured by Pisaster, it withdrew quickly into its shell. Initial responses to attacks from Pycnopodia were similar to those of Tegura pulligo: sna ...
Parasite host-switching from the invasive American red
... revealed a greater polystome richness within M. leprosa than expected, suggesting that host switching may take place in natural environments. Because these parasites most typically infest American turtles like Chrysemys picta marginata and Graptemys pseudogeographica in their natural home range and ...
... revealed a greater polystome richness within M. leprosa than expected, suggesting that host switching may take place in natural environments. Because these parasites most typically infest American turtles like Chrysemys picta marginata and Graptemys pseudogeographica in their natural home range and ...
(Araneae, Gnaphosidae) along the altitudinal gradient of
... Main conclusions Communities of Gnaphosidae on Crete present two distinct structures following the altitudinal gradient, these being separated by a transitional zone between 1600 and 2000 m. This study supports previous results which show a hump-shaped decline in species richness of Gnaphosidae alon ...
... Main conclusions Communities of Gnaphosidae on Crete present two distinct structures following the altitudinal gradient, these being separated by a transitional zone between 1600 and 2000 m. This study supports previous results which show a hump-shaped decline in species richness of Gnaphosidae alon ...
Rossberg, A. G. (2012). Food webs. In A. Hastings
... invading species are determined by randomly modifying traits of resident species are called evolutionary food web models. This is often described as “speciations” of resident species in large “mutation” steps. The scheme is perhaps more realistic than this interpretation. The actual speciations can ...
... invading species are determined by randomly modifying traits of resident species are called evolutionary food web models. This is often described as “speciations” of resident species in large “mutation” steps. The scheme is perhaps more realistic than this interpretation. The actual speciations can ...
Tocantins River
... River. The main factor explaining this reduction may be associated with the lack of transference for fish from downriver to upriver. In addition, there is further evidence that the changes in the river channel modified not only species composition, but also size distribution of fish along the middle ...
... River. The main factor explaining this reduction may be associated with the lack of transference for fish from downriver to upriver. In addition, there is further evidence that the changes in the river channel modified not only species composition, but also size distribution of fish along the middle ...
- WIT Repository
... functional response depends on the expression of individual interspecific interactions and ...
... functional response depends on the expression of individual interspecific interactions and ...
How Useful Are Species Distribution Models for Managing
... interactions and shown it is feasible to include them in models. However, such models require a priori ...
... interactions and shown it is feasible to include them in models. However, such models require a priori ...
Short-term impacts of logging on understorey vegetation in a jarrah
... differences between treatment and control sites are due to the treatments and not to other factors such as site variation. The null hypothesis under test was that there is no significant difference in terms of a) plant species richness and b) abundance, between the silvicultural treatments and the c ...
... differences between treatment and control sites are due to the treatments and not to other factors such as site variation. The null hypothesis under test was that there is no significant difference in terms of a) plant species richness and b) abundance, between the silvicultural treatments and the c ...
5 Annual Undergraduate Research Symposium 2013
... pollinators for later identification using high resolution cameras and an existing reference pollinator collection. Because both species are visited by generalist pollinators, we hypothesized that the introduced species was very likely to hybridize with the native species in nature. After one month ...
... pollinators for later identification using high resolution cameras and an existing reference pollinator collection. Because both species are visited by generalist pollinators, we hypothesized that the introduced species was very likely to hybridize with the native species in nature. After one month ...
Elmqvist
... response diversity in grass species were highlighted in an example from the Australian rangelands (Walker et al. 1999). The species abundances followed the typical distribution, with the bulk of the biomass accounted for by a few dominant species and a long “tail” of minor species with low abundance ...
... response diversity in grass species were highlighted in an example from the Australian rangelands (Walker et al. 1999). The species abundances followed the typical distribution, with the bulk of the biomass accounted for by a few dominant species and a long “tail” of minor species with low abundance ...
View/Open
... Valuing the nonmarket impacts can be challenging. In this regard, economists are employing such tools as dynamic optimization and ex ante simulation analyses to assist decision makers (Evans, Spreen, & Knapp, 2002). Use is also being made of methods such as “contingent valuation” and “willingness-to ...
... Valuing the nonmarket impacts can be challenging. In this regard, economists are employing such tools as dynamic optimization and ex ante simulation analyses to assist decision makers (Evans, Spreen, & Knapp, 2002). Use is also being made of methods such as “contingent valuation” and “willingness-to ...
Moving beyond static species distribution models in support of
... Iverson and colleagues also implemented a CA model, called SHIFT, to simulate migration of tree species under future climate change in North America. The probability of new suitable habitat (predicted from an SDM) being colonized by a species was modelled as a function of that species abundance in n ...
... Iverson and colleagues also implemented a CA model, called SHIFT, to simulate migration of tree species under future climate change in North America. The probability of new suitable habitat (predicted from an SDM) being colonized by a species was modelled as a function of that species abundance in n ...
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.