10.1 MB - Charles Darwin Foundation
... and now President of the CDF. By happy coincidence, Dr Kramer has just been appointed an Officer of the Order of the Golden Ark, in recognition of his services to conservation in the Galapagos. By another happy coincidence, Mr Guy Mountfort, CDF Counsellor and an early protagonist of conservation no ...
... and now President of the CDF. By happy coincidence, Dr Kramer has just been appointed an Officer of the Order of the Golden Ark, in recognition of his services to conservation in the Galapagos. By another happy coincidence, Mr Guy Mountfort, CDF Counsellor and an early protagonist of conservation no ...
3 - ICFCST
... and wet climate, in particular with weakly expressed season’s differences. Such conditions are favorable for realization of species potential of invertebrate herbivores having many generations per year, and for aggressiveness of phytopathogens. Nevertheless, epiphytoties also have not been recorded ...
... and wet climate, in particular with weakly expressed season’s differences. Such conditions are favorable for realization of species potential of invertebrate herbivores having many generations per year, and for aggressiveness of phytopathogens. Nevertheless, epiphytoties also have not been recorded ...
the role of competition in structuring ant communities: a review
... two species is an increase in the adjustment of one species over another, due to its superior skills to access the resource (Andersen et al. 1992). Competition between ants or other taxa should be common, because of its great diversity, wide distribution and generalist habits (Wilson 1987ab,). Such ...
... two species is an increase in the adjustment of one species over another, due to its superior skills to access the resource (Andersen et al. 1992). Competition between ants or other taxa should be common, because of its great diversity, wide distribution and generalist habits (Wilson 1987ab,). Such ...
Small Mammals in Mbeere, Kenya
... of loss and modification of these habitats is land use practice and has increasingly been implicated in declining biodiversity in recent decades (Soul’e, 1991). Direct loss of species from land varying in use may result from altered habitat conditions or may occur indirectly when animals move out in ...
... of loss and modification of these habitats is land use practice and has increasingly been implicated in declining biodiversity in recent decades (Soul’e, 1991). Direct loss of species from land varying in use may result from altered habitat conditions or may occur indirectly when animals move out in ...
Niche and fitness differences relate the maintenance of diversity to
... competitors are solutions to Ṅi ¼ Nigi(N) for i ¼ 1 . . . n, where the per capita growth rate, gi, is a scalar function of the vector of state variables, N. The dimension of N may exceed n when growth rates depend on variables other than the n competitors. In Eq. 1, for example, N also includes res ...
... competitors are solutions to Ṅi ¼ Nigi(N) for i ¼ 1 . . . n, where the per capita growth rate, gi, is a scalar function of the vector of state variables, N. The dimension of N may exceed n when growth rates depend on variables other than the n competitors. In Eq. 1, for example, N also includes res ...
Modelling Food Webs Abstract 1 Introduction
... are prey, H, and the proportions which are predators, P , may be used. They are related to the previous set by H = I + B and P = T + I. Recall that only two of the set {T, I, B} are independent and that H + P = I + 1 is greater than unity, since intermediate species are both predators and prey. A fr ...
... are prey, H, and the proportions which are predators, P , may be used. They are related to the previous set by H = I + B and P = T + I. Recall that only two of the set {T, I, B} are independent and that H + P = I + 1 is greater than unity, since intermediate species are both predators and prey. A fr ...
Ecological fidelity of functional traits based on species presence
... Database_Manual.html). In some cases, especially for small mammals, consistent descriptions of species’ functional ecological attributes were difficult to obtain. When sources differed, we relied upon the primary literature of researchers with established field programs in the region (Kingdon 1971, ...
... Database_Manual.html). In some cases, especially for small mammals, consistent descriptions of species’ functional ecological attributes were difficult to obtain. When sources differed, we relied upon the primary literature of researchers with established field programs in the region (Kingdon 1971, ...
Report_Civet Cat
... A lone male rests in a mango tree in the East Coast area differ physically and genetically from cats. of Singapore. Although civets are also often known as civet cats, they form the Viverridae, which is a completely separate family from the cats, which make up the Felidae. ...
... A lone male rests in a mango tree in the East Coast area differ physically and genetically from cats. of Singapore. Although civets are also often known as civet cats, they form the Viverridae, which is a completely separate family from the cats, which make up the Felidae. ...
The Bearded Dragon
... It is semi-arboreal, and in the wild it perches and basks on fallen trees and rocks. Between October and February, it produces one or possibly two clutches of eggs, numbering from five to fifteen per clutch. During this time, this species is found basking on roads, and a great many get run over by c ...
... It is semi-arboreal, and in the wild it perches and basks on fallen trees and rocks. Between October and February, it produces one or possibly two clutches of eggs, numbering from five to fifteen per clutch. During this time, this species is found basking on roads, and a great many get run over by c ...
The Weed Impact to Native Species
... (e.g., not present in infested areas – see Table 2) along with notes of who made observations, so if needed the source of information could be retraced. This process resulted in an interim list of the species potentially at risk. The interim list was then widely circulated and feed-back was sought; ...
... (e.g., not present in infested areas – see Table 2) along with notes of who made observations, so if needed the source of information could be retraced. This process resulted in an interim list of the species potentially at risk. The interim list was then widely circulated and feed-back was sought; ...
How Habitat Edges Change Species Interactions
... boundary conditions as saying that individuals crossing the patch boundary are not immediately lost from the population and may return or contribute offspring to the patch. Studies of the spatial dynamics of the spruce budworm (Ludwig et al. 1979) are a now-classical ecological application of mixed ...
... boundary conditions as saying that individuals crossing the patch boundary are not immediately lost from the population and may return or contribute offspring to the patch. Studies of the spatial dynamics of the spruce budworm (Ludwig et al. 1979) are a now-classical ecological application of mixed ...
The long-term relationship between plant diversity and total plant
... 2002). Second, the two-species case of each model is analytically tractable, and acts as a limiting case for the behavior of more speciose models. Third, the twospecies version of each model might be expected to capture many (though by no means all) aspects of the dynamics of more speciose models. F ...
... 2002). Second, the two-species case of each model is analytically tractable, and acts as a limiting case for the behavior of more speciose models. Third, the twospecies version of each model might be expected to capture many (though by no means all) aspects of the dynamics of more speciose models. F ...
2015 Annual Report - Threatened Species Recovery Hub
... Enhanced policy, management and process for recovery planning. ...
... Enhanced policy, management and process for recovery planning. ...
Niche theory and guilds
... niche breadth niche overlap Consider the words of Gause (1934), when discussing the competitive exclusion principle: "...as a result of competition two species hardly ever occupy similar niches, but displace each other in such a manner that each takes possess of certain kinds of food and modes of li ...
... niche breadth niche overlap Consider the words of Gause (1934), when discussing the competitive exclusion principle: "...as a result of competition two species hardly ever occupy similar niches, but displace each other in such a manner that each takes possess of certain kinds of food and modes of li ...
The long-term relationship between plant diversity and total plant
... 2002). Second, the two-species case of each model is analytically tractable, and acts as a limiting case for the behavior of more speciose models. Third, the twospecies version of each model might be expected to capture many (though by no means all) aspects of the dynamics of more speciose models. F ...
... 2002). Second, the two-species case of each model is analytically tractable, and acts as a limiting case for the behavior of more speciose models. Third, the twospecies version of each model might be expected to capture many (though by no means all) aspects of the dynamics of more speciose models. F ...
Informational Resources on Invasive Plants
... web-based informational resource, including a regional atlas, of up to 100 species known or suspected to be invasive in New England. The atlas supports an early detection and alert system for new invaders. The IPANE website includes images and descriptive data, identification tips, management links ...
... web-based informational resource, including a regional atlas, of up to 100 species known or suspected to be invasive in New England. The atlas supports an early detection and alert system for new invaders. The IPANE website includes images and descriptive data, identification tips, management links ...
Self-limitation as an explanation for species` relative abundances
... prevalence of rare species are also likely candidates to be affecting their persistence. It is reasonable to expect that self-limitation should also promote the persistence of rare species by buffering them from extremely low population numbers. To examine whether self-limitation can help rare-speci ...
... prevalence of rare species are also likely candidates to be affecting their persistence. It is reasonable to expect that self-limitation should also promote the persistence of rare species by buffering them from extremely low population numbers. To examine whether self-limitation can help rare-speci ...
Defensive behaviour in Aplastodiscus leucopygius
... more such behaviours over the course of a given conducted all observations at night between 19:30 and threat event (Angulo et al., 2007, Toledo et al., 2010). 00:30 hours, totalling up to 15 days of sampling, with Defensive behaviours have been reported for the genus air temperatures varying between ...
... more such behaviours over the course of a given conducted all observations at night between 19:30 and threat event (Angulo et al., 2007, Toledo et al., 2010). 00:30 hours, totalling up to 15 days of sampling, with Defensive behaviours have been reported for the genus air temperatures varying between ...
Recolonizing wolves trigger a trophic cascade in Wisconsin (USA)
... (decreased percentage cover in high wolf areas). The relationship between disturbance and species diversity described by Denslow (1985) predicts that species richness of seedling, shrub and forb species should be higher at high wolf areas (since browsing pressure should be lower and closer to histor ...
... (decreased percentage cover in high wolf areas). The relationship between disturbance and species diversity described by Denslow (1985) predicts that species richness of seedling, shrub and forb species should be higher at high wolf areas (since browsing pressure should be lower and closer to histor ...
Potential value of indicator species for conservation
... trillion dollars, or twice the worlds total annual GNP (Costanza et al. 1997). However the true value is infinite, as human society cannot exist without them. All these resources are now managed in the sense that all ecosystems on earth are affected by human activity. Therefore perhaps the most im ...
... trillion dollars, or twice the worlds total annual GNP (Costanza et al. 1997). However the true value is infinite, as human society cannot exist without them. All these resources are now managed in the sense that all ecosystems on earth are affected by human activity. Therefore perhaps the most im ...
the role of competition in structuring ant communities: a review
... Nature may be compared to a yielding surface with ten thousand sharp “wedges packed close together and driven inwards with incessant blows, sometimes one wedge being struck, and then another with greater force.” (Darwin 1859 p. 631). This metaphor represents nothing more than a scenario promoted by ...
... Nature may be compared to a yielding surface with ten thousand sharp “wedges packed close together and driven inwards with incessant blows, sometimes one wedge being struck, and then another with greater force.” (Darwin 1859 p. 631). This metaphor represents nothing more than a scenario promoted by ...
aggregated seed arrival alters plant diversity in
... exploitation and tolerance may take advantage of different opportunities because the system is not well mixed (Bolker and Pacala 1999). These theoretical results are consistent whether using interacting particle systems, moment equations for spatial point processes or metapopulation models (Bolker e ...
... exploitation and tolerance may take advantage of different opportunities because the system is not well mixed (Bolker and Pacala 1999). These theoretical results are consistent whether using interacting particle systems, moment equations for spatial point processes or metapopulation models (Bolker e ...
Common Name: COOSAWATTEE CRAYFISH Scientific Name
... Diet: No studies of the Coosawattee crayfish are known. Crayfishes are considered opportunistic omnivores and are likely to feed on live and decaying vegetation, aquatic insect larvae, small fishes, and dead animal matter. Life History: Stream dwelling crayfishes typically hide during the day and co ...
... Diet: No studies of the Coosawattee crayfish are known. Crayfishes are considered opportunistic omnivores and are likely to feed on live and decaying vegetation, aquatic insect larvae, small fishes, and dead animal matter. Life History: Stream dwelling crayfishes typically hide during the day and co ...
The Role of Biodiversity for the Functioning of Rocky Reef
... that algal species that are not highly productive are competitively superior, as would be expected if species experience trade-offs among different traits such as growth, reproduction and defence. The experiments used by Bruno et al. (2005, 2006) were run for relatively short periods of time (2.5–5w ...
... that algal species that are not highly productive are competitively superior, as would be expected if species experience trade-offs among different traits such as growth, reproduction and defence. The experiments used by Bruno et al. (2005, 2006) were run for relatively short periods of time (2.5–5w ...
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.