53 Notes
... • Some populations fluctuate greatly and make it difficult to define K • Some populations show an Allee effect, in which individuals have a more difficult time surviving or reproducing if the population size is too small ...
... • Some populations fluctuate greatly and make it difficult to define K • Some populations show an Allee effect, in which individuals have a more difficult time surviving or reproducing if the population size is too small ...
Growth Rate of Acropora formosa and Montipora
... coral rehabilitation method which can increase growth rate of coral. This study was to determine the growth rate of colonies of Acropora formosa and Montipora digitata growing on Biorock substrate and away (up to 10 meters) from Biorock substrate.This study was conducted in Gili Trawangan from April ...
... coral rehabilitation method which can increase growth rate of coral. This study was to determine the growth rate of colonies of Acropora formosa and Montipora digitata growing on Biorock substrate and away (up to 10 meters) from Biorock substrate.This study was conducted in Gili Trawangan from April ...
the biology, ecology and conservation of euphorbia
... provided better predictions of population density) and a more comprehensive survey and data analysis in this study, and a failure to implement the conservation management plan proposed by Raal (1986). It is estimated that the total number of individuals in all the populations comprise approximately ...
... provided better predictions of population density) and a more comprehensive survey and data analysis in this study, and a failure to implement the conservation management plan proposed by Raal (1986). It is estimated that the total number of individuals in all the populations comprise approximately ...
Population dynamics of large herbivores: variable recruitment with
... Fortunately, recent years have seen a rapid increase in use of CMR and radiotelemetry methods for estimating survival rates and their variability. The modeling of survival has now a firm statistical basis and allows for a flexible analysis of the roles of environmental factors and of density3. The t ...
... Fortunately, recent years have seen a rapid increase in use of CMR and radiotelemetry methods for estimating survival rates and their variability. The modeling of survival has now a firm statistical basis and allows for a flexible analysis of the roles of environmental factors and of density3. The t ...
generalist feeding behaviors of aedes sierrensis larvae and their
... interactions among mosquito larvae, midsized organisms (such as protozoa), and lowerlevel organisms (such as bacteria and fungi) in west coast phytotelmata. Laboratory microcosm experiments were conducted to characterize the feeding strategies of Ae. sierrensis larvae in the presence of multiple res ...
... interactions among mosquito larvae, midsized organisms (such as protozoa), and lowerlevel organisms (such as bacteria and fungi) in west coast phytotelmata. Laboratory microcosm experiments were conducted to characterize the feeding strategies of Ae. sierrensis larvae in the presence of multiple res ...
Newell's shearwater population modeling for Habitat Conservation
... When considered independently, fallout and powerline minimization have the potential to increase growth rate by up to 0.5% and 0.3%, respectively, but would prove more effective in areas where concurrent colony management is planned. The Save Our Shearwater pr ...
... When considered independently, fallout and powerline minimization have the potential to increase growth rate by up to 0.5% and 0.3%, respectively, but would prove more effective in areas where concurrent colony management is planned. The Save Our Shearwater pr ...
Gradients in density variations of small rodents: the importance of
... in northern Scandinavia usually extend over four years between a population low and a subsequent peak-decline. A shorter number of years will cause great random effects in indices of cyclicity for these northern areas (cf. Henttonen et al. 1985) while three years may be enough in southern Fennoscand ...
... in northern Scandinavia usually extend over four years between a population low and a subsequent peak-decline. A shorter number of years will cause great random effects in indices of cyclicity for these northern areas (cf. Henttonen et al. 1985) while three years may be enough in southern Fennoscand ...
weakly density-dependent mortality and the coexistence of species
... differ only moderately in their density-independent mortality is generically possible. Since the attractor is not necessarily a steady state, one could argue that this may be just another example of the well-known coexistence on a limit cycle Armstrong and McGehee (1980). Note however, that coexiste ...
... differ only moderately in their density-independent mortality is generically possible. Since the attractor is not necessarily a steady state, one could argue that this may be just another example of the well-known coexistence on a limit cycle Armstrong and McGehee (1980). Note however, that coexiste ...
Introduction - A New Development @ Chavoux.com
... capacity as “the concept of vegetation-ungulate equilibrium” resulting in a continuous line of possible values (for K) (Figure 2). Different people have called two points on this curve “carrying capacity”. The one is the point where the nutritional value available per individual animal has fallen to ...
... capacity as “the concept of vegetation-ungulate equilibrium” resulting in a continuous line of possible values (for K) (Figure 2). Different people have called two points on this curve “carrying capacity”. The one is the point where the nutritional value available per individual animal has fallen to ...
Body-mass constraints on foraging behaviour determine population
... (Fig. 1). When consumers are small relative to their resources (small consumer–resource body-mass ratios) the reactive distance is high and the consumer movement is slow (Aljetlawi, Sparrevik & Leonardsson 2004). When consumers are large relative to their resources (high consumer–resource body-mass ...
... (Fig. 1). When consumers are small relative to their resources (small consumer–resource body-mass ratios) the reactive distance is high and the consumer movement is slow (Aljetlawi, Sparrevik & Leonardsson 2004). When consumers are large relative to their resources (high consumer–resource body-mass ...
The Stabilizing Effect of Intraspecific Genetic Variation on Population
... impact remain empirically unanswered: (a) How does intraspecific genetic diversity affect the ecological characteristics of sexual species, in which recombination can alter the outcome of causal mechanisms such as selection and niche diversification? (b) Does genetic diversity increase population dy ...
... impact remain empirically unanswered: (a) How does intraspecific genetic diversity affect the ecological characteristics of sexual species, in which recombination can alter the outcome of causal mechanisms such as selection and niche diversification? (b) Does genetic diversity increase population dy ...
Sensitivity of copepod populations to bottom-up and top
... distributions of these species differ as well (see Ji et al., 2009), including a steeper decrease in the abundance from shallow to deep regions for PS than CT. These differences in spatio-temporal patterns suggest that their distributions are likely related to their unique life-history traits, with ...
... distributions of these species differ as well (see Ji et al., 2009), including a steeper decrease in the abundance from shallow to deep regions for PS than CT. These differences in spatio-temporal patterns suggest that their distributions are likely related to their unique life-history traits, with ...
Coexistence of mixotrophs, autotrophs, and heterotrophs in
... of resources. The dashed arrows indicate the release of excess photosynthate that occurs when autotrophs are growing under P limitation. The return of C and P to the resource pools by the organisms occurs but is not shown. ...
... of resources. The dashed arrows indicate the release of excess photosynthate that occurs when autotrophs are growing under P limitation. The return of C and P to the resource pools by the organisms occurs but is not shown. ...
14.1 Habitat And Niche
... limiting factor is not affected by population size/density – These are usually ABIOTIC limiting factors such as Weather Forrest fires Natural disasters Human activities ...
... limiting factor is not affected by population size/density – These are usually ABIOTIC limiting factors such as Weather Forrest fires Natural disasters Human activities ...
Federal Concerns Regarding Hatchery Steelhead Spawning in the
... of their life in the ocean. • U.S. Fish & Wildlife Service - species that spend most of their life on land or in freshwater. ...
... of their life in the ocean. • U.S. Fish & Wildlife Service - species that spend most of their life on land or in freshwater. ...
Extinction thresholds: insights from simple models
... always positive, as shown in Fig. 1. For this situation there is a single solution, n* = k, which is stable. On the other hand, Eq. 1 has two solutions, n* = k which is again stable, and n* = c, which is unstable (population either increases or decreases towards extinction, Fig. 1). A model like Eq. ...
... always positive, as shown in Fig. 1. For this situation there is a single solution, n* = k, which is stable. On the other hand, Eq. 1 has two solutions, n* = k which is again stable, and n* = c, which is unstable (population either increases or decreases towards extinction, Fig. 1). A model like Eq. ...
Wildlife Populations in the Pacaya
... periods the fish enter the flooded forests and feed on the abundance of vegetative and animal production, especially the abundance of fruits, invertebrates and other living organisms trapped in the annual floods. Indeed, many tree species fruit during this season and rely on the fish as their pri ...
... periods the fish enter the flooded forests and feed on the abundance of vegetative and animal production, especially the abundance of fruits, invertebrates and other living organisms trapped in the annual floods. Indeed, many tree species fruit during this season and rely on the fish as their pri ...
A dual frame survey to assess time- and space
... while it is restricted to a 3-4 months (summer) period in the northern part of the Alps. ...
... while it is restricted to a 3-4 months (summer) period in the northern part of the Alps. ...
Adaptation, density dependence and the responses of trophic level
... The responses of abundances to the extrinsic per capita mortality rates are obtained by differentiating the equilibrium conditions for equations (1a–d) with respect to each of the di. The resulting formulae can be simplified somewhat by assuming that the equilibrium of the system is locally stable. ...
... The responses of abundances to the extrinsic per capita mortality rates are obtained by differentiating the equilibrium conditions for equations (1a–d) with respect to each of the di. The resulting formulae can be simplified somewhat by assuming that the equilibrium of the system is locally stable. ...
Metapopulation Ecology - Department of Ecology and Evolutionary
... disturbances, such as drought or human persecution, or biological (often intrinsic) disturbances such as predation and parasitism. The basic result of this model is that, as for the logistic population models, if c > p, then an initially small metapopulation grows towards equilibrium. At equilibrium ...
... disturbances, such as drought or human persecution, or biological (often intrinsic) disturbances such as predation and parasitism. The basic result of this model is that, as for the logistic population models, if c > p, then an initially small metapopulation grows towards equilibrium. At equilibrium ...
A trade-off between growth and starvation endurance in a pit
... feeding and starvation phases using Pitman’s test for the equality of variances in paired samples (see Kelly and Price 2005). Significantly distinct variances point to the existence of a differential effect in addition to the expected regression to the mean effect. Alternatively, if only the regress ...
... feeding and starvation phases using Pitman’s test for the equality of variances in paired samples (see Kelly and Price 2005). Significantly distinct variances point to the existence of a differential effect in addition to the expected regression to the mean effect. Alternatively, if only the regress ...
lions on small reserves - Carnivore Conservation
... Lions are regarded as high profile animals by the eco-tourism industry and are a sought-after species by local and international tourists alike. In an effort to be more competitive in the tourism market, landowners often agree to establish lions in their game reserves. However, the consequences of l ...
... Lions are regarded as high profile animals by the eco-tourism industry and are a sought-after species by local and international tourists alike. In an effort to be more competitive in the tourism market, landowners often agree to establish lions in their game reserves. However, the consequences of l ...
Cost-efficient fenced reserves for conservation: single
... The day-to-day reality of management planning is complex, and short funding cycles from uncertain sources mean that building a single large fence is not always feasible. Additional funding following the demonstrated success of an exclosure can be used to leverage further investment to extend the ori ...
... The day-to-day reality of management planning is complex, and short funding cycles from uncertain sources mean that building a single large fence is not always feasible. Additional funding following the demonstrated success of an exclosure can be used to leverage further investment to extend the ori ...
Ontario Moose Resource Report for WMU 01A
... In Ontario, the moose population and its habitat is managed using an ecological approach. This approach takes into account a wide range of factors related to moose and uses the best available science and information on moose populations and harvest. Ontario’s Cervid Ecological Framework and Moose Ma ...
... In Ontario, the moose population and its habitat is managed using an ecological approach. This approach takes into account a wide range of factors related to moose and uses the best available science and information on moose populations and harvest. Ontario’s Cervid Ecological Framework and Moose Ma ...
Cohort Dynamics Give Rise to Alternative Stable Community States.
... variability is caused endogenously (Armstrong and McGehee 1980; Adler 1990). While implications of size structure for the occurrence of ASS have been previously acknowledged (Miller and Rudolf 2011 and references therein), endogenously generated variability, that is, population cycles, caused by siz ...
... variability is caused endogenously (Armstrong and McGehee 1980; Adler 1990). While implications of size structure for the occurrence of ASS have been previously acknowledged (Miller and Rudolf 2011 and references therein), endogenously generated variability, that is, population cycles, caused by siz ...