OIKOS Finland conference for Ecologists and Evolutionary Biologists
... In this contribution, I will derive a procedure that answers the question: how can we achieve the CBD Aichi target on restoration of at least 15% of degraded habitats by 2020 in a way that is scientifically valid. I will argue that from an ecological perspective, it is necessary to recognize that ec ...
... In this contribution, I will derive a procedure that answers the question: how can we achieve the CBD Aichi target on restoration of at least 15% of degraded habitats by 2020 in a way that is scientifically valid. I will argue that from an ecological perspective, it is necessary to recognize that ec ...
ZOOPLANKTON STRUCTURE AND DYNAMICS IN MEDITERRANEAN MARSHES (EMPORDÀ WETLANDS): A SIZE-BASED APPROACH
... 4.2.5. Case example of temporal shift in spectrum shape .............................. 4.3. Discussion........................................................................................................ 4.3.1. Stepped shapes and population dynamics............................................. 4. ...
... 4.2.5. Case example of temporal shift in spectrum shape .............................. 4.3. Discussion........................................................................................................ 4.3.1. Stepped shapes and population dynamics............................................. 4. ...
continued - Linn-Benton Community College
... Environmental resistance limits population growth (continued) – Logistic growth occurs when new populations stabilize as a result of environmental resistance – This growth pattern, where populations increase to the maximum number sustainable by their environment and then stabilize, is called logis ...
... Environmental resistance limits population growth (continued) – Logistic growth occurs when new populations stabilize as a result of environmental resistance – This growth pattern, where populations increase to the maximum number sustainable by their environment and then stabilize, is called logis ...
SPOTTED HYAENA SURVIVAL AND DENSITY IN A LION
... The LPNP is unique among African protected areas, in that it has people and settlements legally allowed inside the National park. This unique situation provided us an opportunity to study the effects of proximity to human settlements on survival of hyaenas and its effect on the density of ungulat ...
... The LPNP is unique among African protected areas, in that it has people and settlements legally allowed inside the National park. This unique situation provided us an opportunity to study the effects of proximity to human settlements on survival of hyaenas and its effect on the density of ungulat ...
Bringing the Hutchinsonian niche into the 21st century
... et al. (34) argue that such Allee effects, the various reasons population growth rate can increase with increasing density, are ubiquitous. For instance, in sexual species, at low densities mating pairs may not easily form. Interspecific interactions can imply Allee effects [e.g., prey can enjoy red ...
... et al. (34) argue that such Allee effects, the various reasons population growth rate can increase with increasing density, are ubiquitous. For instance, in sexual species, at low densities mating pairs may not easily form. Interspecific interactions can imply Allee effects [e.g., prey can enjoy red ...
accepted manuscript
... Hartley and Shorrocks, 2002). Experimental studies have found that aggregated spatial arrangements can influence the outcome of interspecific competition and promote species coexistence (Idjadi and Karlson, 2007). This would be important in maintaining species biodiversity during reef recovery from ...
... Hartley and Shorrocks, 2002). Experimental studies have found that aggregated spatial arrangements can influence the outcome of interspecific competition and promote species coexistence (Idjadi and Karlson, 2007). This would be important in maintaining species biodiversity during reef recovery from ...
How life-history traits affect ecosystem properties: effects of dispersal
... one compartment (e.g. plants) can be reversed when other compartments (e.g. detritus or nutrients) disperse between patches. In particular, the source–sink dynamics of primary producers are sensitive to the balance of nutrient versus detritus diffusion; patches that would normally be unsuitable for ...
... one compartment (e.g. plants) can be reversed when other compartments (e.g. detritus or nutrients) disperse between patches. In particular, the source–sink dynamics of primary producers are sensitive to the balance of nutrient versus detritus diffusion; patches that would normally be unsuitable for ...
2008snail
... consider include potential host tree species, substrate type, elevation, aspect, slope, humidity, rainfall, canopy, and understory species cover. It may also be important to note the presence or absence of other native snail species (i.e. Auriculella, Philonesia, Amastra, Succinea) that can be used ...
... consider include potential host tree species, substrate type, elevation, aspect, slope, humidity, rainfall, canopy, and understory species cover. It may also be important to note the presence or absence of other native snail species (i.e. Auriculella, Philonesia, Amastra, Succinea) that can be used ...
Deciphering a survival strategy during the interspecific competition
... evolved to cope with the changes in both biotic and abiotic environments. They have developed complex strategies [3–7] to thrive in hostile conditions that may be characterized by limited nutrients, the presence of toxic chemicals, competing species, predators and changes in temperature. Individuals ...
... evolved to cope with the changes in both biotic and abiotic environments. They have developed complex strategies [3–7] to thrive in hostile conditions that may be characterized by limited nutrients, the presence of toxic chemicals, competing species, predators and changes in temperature. Individuals ...
temperate lake ecosystems Synchronous dynamics of zooplankton
... signature of competition may be entirely obscured by the synchronizing effect of ‘good’ versus ‘bad’ years (e.g. drought versus wet), even if it is an important driver of species’ relative fitness and persistence [22]. Furthermore, it has been shown that embedding competitors in a food web context c ...
... signature of competition may be entirely obscured by the synchronizing effect of ‘good’ versus ‘bad’ years (e.g. drought versus wet), even if it is an important driver of species’ relative fitness and persistence [22]. Furthermore, it has been shown that embedding competitors in a food web context c ...
Populations - Lyndhurst School
... What determines whether a population grows, shrinks, or stays the same size? A population will increase or decrease in size depending on how many individuals are added to it or The factors that removed from it, as shown in Figure 5–3. can affect population size are the birthrate, death rate, and the ...
... What determines whether a population grows, shrinks, or stays the same size? A population will increase or decrease in size depending on how many individuals are added to it or The factors that removed from it, as shown in Figure 5–3. can affect population size are the birthrate, death rate, and the ...
ALTERNATIVE PREY AND THE DYNAMICS OF INTRAGUILD
... strengthens this expectation. If the IG predator is superior in competing for the shared resource, its R* (for that resource) will be lower than that of the IG prey; alternative prey at equilibrium indirectly push the shared resource below this R* (Holt 1977). If the IG prey is an inferior competito ...
... strengthens this expectation. If the IG predator is superior in competing for the shared resource, its R* (for that resource) will be lower than that of the IG prey; alternative prey at equilibrium indirectly push the shared resource below this R* (Holt 1977). If the IG prey is an inferior competito ...
Populations - Lyndhurst School
... What determines whether a population grows, shrinks, or stays the same size? A population will increase or decrease in size depending on how many individuals are added to it or The factors that removed from it, as shown in Figure 5–3. can affect population size are the birthrate, death rate, and the ...
... What determines whether a population grows, shrinks, or stays the same size? A population will increase or decrease in size depending on how many individuals are added to it or The factors that removed from it, as shown in Figure 5–3. can affect population size are the birthrate, death rate, and the ...
carrying capacity: a critique of the concept al~ its usefulness
... 1988), is the density of individuals above which intraspecific competition inhibits further increase in numbers. I have adopted the term tolerance density in place of saturation density, which is suggestive of a crowded population at subsistence level, whereas tolerance density is a density above wh ...
... 1988), is the density of individuals above which intraspecific competition inhibits further increase in numbers. I have adopted the term tolerance density in place of saturation density, which is suggestive of a crowded population at subsistence level, whereas tolerance density is a density above wh ...
View or download: Introduction, methods, results
... Models were deterministic and made no allowance for natural variation in vital rates over time (i.e. stochastic models). Reproductive success is the most well documented aspect of petrel and shearwater biology that demonstrates this natural variation, typically showing wide ...
... Models were deterministic and made no allowance for natural variation in vital rates over time (i.e. stochastic models). Reproductive success is the most well documented aspect of petrel and shearwater biology that demonstrates this natural variation, typically showing wide ...
Use of skeletochronological analysis to estimate the age of
... CCL ( X = 147.5 ± 13.9). Of the larger sea turtles, 10 were female, 9 male, and 6 were of unknown sex. With the exception of 1 leatherback stranded in the Gulf of Mexico, the remainder were distributed along the US Atlantic coast as follows: Massachusetts (7), New Jersey (2), Virginia (2), North Car ...
... CCL ( X = 147.5 ± 13.9). Of the larger sea turtles, 10 were female, 9 male, and 6 were of unknown sex. With the exception of 1 leatherback stranded in the Gulf of Mexico, the remainder were distributed along the US Atlantic coast as follows: Massachusetts (7), New Jersey (2), Virginia (2), North Car ...
Effect of intra-and interspecific interactions on the feeding behavior
... Bellamy 1971, Underwood 1988). Interactions between conspecifics may affect the behavior of individuals in a variety of ways, and result in behavioral regulation of density (e.g. aggression, avoidance), dispersion (Branch 1975, Underwood 1988), and the use of a wider variety of prey and habitats (Br ...
... Bellamy 1971, Underwood 1988). Interactions between conspecifics may affect the behavior of individuals in a variety of ways, and result in behavioral regulation of density (e.g. aggression, avoidance), dispersion (Branch 1975, Underwood 1988), and the use of a wider variety of prey and habitats (Br ...
Modelling coexistence of plant functional types in grassland
... gaps, ignoring the question whether different types of disturbance cause differentiated effects on diversity (e.g. Colasanti et al., 2001; Schippers et al., 2001; Kahmen, 2003). Another environmental factor often used to explain species diversity, is spatial heterogeneity. Following Chesson (2000b) ...
... gaps, ignoring the question whether different types of disturbance cause differentiated effects on diversity (e.g. Colasanti et al., 2001; Schippers et al., 2001; Kahmen, 2003). Another environmental factor often used to explain species diversity, is spatial heterogeneity. Following Chesson (2000b) ...
Ecological niche of plant pathogens
... Parasites play major roles in ecosystems: they promote diversity, as they affect the populations of dominant species. The consequence is the facilitation of subordinate species to build up larger populations. Parasitism and disease are, probably, the most significant causes of population regulation ...
... Parasites play major roles in ecosystems: they promote diversity, as they affect the populations of dominant species. The consequence is the facilitation of subordinate species to build up larger populations. Parasitism and disease are, probably, the most significant causes of population regulation ...
EVOLUTIONARY DYNAMICS OF MUTUALISM: THE ROLE OF
... (Axelrod and Hamilton 1981; Bull and Rice 1991; Maynard Smith and Szathmáry 1995; Doebeli and Knowlton 1998; Herre et al. 1999; Denison 2000; Edwards and Yu 2007; Johnstone and Bshary 2008). However, as exploiters are in fact common both within and across mutualisms, as well as persistent across tim ...
... (Axelrod and Hamilton 1981; Bull and Rice 1991; Maynard Smith and Szathmáry 1995; Doebeli and Knowlton 1998; Herre et al. 1999; Denison 2000; Edwards and Yu 2007; Johnstone and Bshary 2008). However, as exploiters are in fact common both within and across mutualisms, as well as persistent across tim ...
Predation, Size, and Composition of Planktons
... Brooks and Dodson had shown in their earlier work), while invertebrate predation had very little effect on the zooplankton in the rockpool. Hence, the vertebrate predator reduced the population size of the zooplankton and affected its distribution and species composition in the zooplankton community ...
... Brooks and Dodson had shown in their earlier work), while invertebrate predation had very little effect on the zooplankton in the rockpool. Hence, the vertebrate predator reduced the population size of the zooplankton and affected its distribution and species composition in the zooplankton community ...