![Temporal variability in the Abra alba community determined by](http://s1.studyres.com/store/data/005381420_1-ecd53272a678512927ceec419b90fa24-300x300.png)
Temporal variability in the Abra alba community determined by
... over a period of nine years (1995 – 2003). During this period, the community did not show a cyclic pattern, but a shift between the years 1995 – 1997 and 1999 – 2003 that was possibly triggered by changes in the hydroclimatic state of the North Sea and was reflected by a small shift of the dominant ...
... over a period of nine years (1995 – 2003). During this period, the community did not show a cyclic pattern, but a shift between the years 1995 – 1997 and 1999 – 2003 that was possibly triggered by changes in the hydroclimatic state of the North Sea and was reflected by a small shift of the dominant ...
Systematic measurement of effectiveness for conservation of
... been there for centuries. Seven species of burrowing seabirds survived on the island. These were dominated by little blue penguins (Eudyptula minor), grey-faced petrels (Pterodroma macroptera) and fluttering shearwaters (Puffinus gavia). There was also a small breeding population of the rare Pycroft ...
... been there for centuries. Seven species of burrowing seabirds survived on the island. These were dominated by little blue penguins (Eudyptula minor), grey-faced petrels (Pterodroma macroptera) and fluttering shearwaters (Puffinus gavia). There was also a small breeding population of the rare Pycroft ...
Plant diversity increases resistance to invasion in the absence of
... flagged C. tectorum plants per plot was measured including its area and position within the 25-cm-diameter circle. This neighborhood size was chosen because C. tectorum plants in the plots were smaller than 25 cm in diameter. All plants in this 490.87-cm2 area were operationally defined as being in ...
... flagged C. tectorum plants per plot was measured including its area and position within the 25-cm-diameter circle. This neighborhood size was chosen because C. tectorum plants in the plots were smaller than 25 cm in diameter. All plants in this 490.87-cm2 area were operationally defined as being in ...
44KB - NZQA
... Please contact the Primary Industry Training Organisation [email protected] if you wish to suggest changes to the content of this unit standard. ...
... Please contact the Primary Industry Training Organisation [email protected] if you wish to suggest changes to the content of this unit standard. ...
Summary of Working Group Results
... a) What environmental variables are significant drivers? Do they differ for plants and animals? Do they differ across ecosystems? b) What are the limits of response by organisms to these drivers? 3) What are the best indicators (species, phenophases) for phenological responses? a) Are there signific ...
... a) What environmental variables are significant drivers? Do they differ for plants and animals? Do they differ across ecosystems? b) What are the limits of response by organisms to these drivers? 3) What are the best indicators (species, phenophases) for phenological responses? a) Are there signific ...
The intermediate disturbance hypothesis should be
... Empirical refutation of the IDH The empirical evidence on the IDH has been recently reviewed and so can be covered rather briefly [8,9]. Empirical studies rarely find the predicted peak in diversity at intermediate disturbance levels. A review of over 100 published diversity–disturbance relationship ...
... Empirical refutation of the IDH The empirical evidence on the IDH has been recently reviewed and so can be covered rather briefly [8,9]. Empirical studies rarely find the predicted peak in diversity at intermediate disturbance levels. A review of over 100 published diversity–disturbance relationship ...
Indirect Interactions Darwin — Lots of “Humblebees” around
... Cuckoldry —> jealousy Desertion —> Mating Rituals, Complex Courtship Sex that invests most is most choosy about mates Natural selection produces a correlation between male genetic quality and female preference “Sexy son” phenomenon (females cannot afford to mate with males that are not attractive to ...
... Cuckoldry —> jealousy Desertion —> Mating Rituals, Complex Courtship Sex that invests most is most choosy about mates Natural selection produces a correlation between male genetic quality and female preference “Sexy son” phenomenon (females cannot afford to mate with males that are not attractive to ...
Flanagan Contextual Teaching Assignment
... different organisms. The students will be given time to research some mimics before sitting through a lecture. This is a fun way for the students to learn about mimicry, and co evolution. It is also a good way to revisit natural selection and homology, analogy and homoplasy from a slightly different ...
... different organisms. The students will be given time to research some mimics before sitting through a lecture. This is a fun way for the students to learn about mimicry, and co evolution. It is also a good way to revisit natural selection and homology, analogy and homoplasy from a slightly different ...
Describe the principles of aquatic ecology and relate to aquaculture
... Please contact the Primary Industry Training Organisation [email protected] if you wish to suggest changes to the content of this unit standard. ...
... Please contact the Primary Industry Training Organisation [email protected] if you wish to suggest changes to the content of this unit standard. ...
Community Ecology
... resources is called the species’ ecological niche • An ecological niche can also be thought of as an organism’s ecological role • Ecologically similar species can coexist in a community if there are one or more significant differences in their niches ...
... resources is called the species’ ecological niche • An ecological niche can also be thought of as an organism’s ecological role • Ecologically similar species can coexist in a community if there are one or more significant differences in their niches ...
Human-aided admixture may fuel ecosystem transformation during biological invasions: theoretical and
... of invasive populations can reveal how admixture results in novel genotypes and shifts in functional trait variation within populations. Further, because invasive species can be ecosystem engineers within invaded ecosystems, admixture-induced shifts in the functional traits of invaders can affect th ...
... of invasive populations can reveal how admixture results in novel genotypes and shifts in functional trait variation within populations. Further, because invasive species can be ecosystem engineers within invaded ecosystems, admixture-induced shifts in the functional traits of invaders can affect th ...
IMPACTS OF BIOLOGICAL INVASIONS ON FRESHWATER
... substantial declines in native populations will belong to novel taxa more often than low-impact invaders (Ricciardi & Atkinson 2004). Indeed, this appears to be the case in freshwater systems (Fig. 16.2). Impacts on biodiversity can also result when invaders are brought into contact with closely rel ...
... substantial declines in native populations will belong to novel taxa more often than low-impact invaders (Ricciardi & Atkinson 2004). Indeed, this appears to be the case in freshwater systems (Fig. 16.2). Impacts on biodiversity can also result when invaders are brought into contact with closely rel ...
Ecology and Ecosystems - Baltic University Programme
... exact form of natural history studies. Detailed knowledge of the autecology of species is now an important basis for the Red Data Books, which for each country assess the risk of extinction for plants, fungi and animals. The Red Data Books consist of expert judgements of the risk of extinction withi ...
... exact form of natural history studies. Detailed knowledge of the autecology of species is now an important basis for the Red Data Books, which for each country assess the risk of extinction for plants, fungi and animals. The Red Data Books consist of expert judgements of the risk of extinction withi ...
Ecological Succession - Miami Beach Senior High School
... • Lichens grow larger. Some die. Decomposers arrive and break down the lichens. The dead lichens and waste materials of the decomposers enrich the ...
... • Lichens grow larger. Some die. Decomposers arrive and break down the lichens. The dead lichens and waste materials of the decomposers enrich the ...
McPeek, M. A. 2008. Ecological factors limiting the
... may either enter a diapause phase to pass through harsh environmental conditions (e.g. many Lestes species in temporary ponds have diapausing eggs to pass through periods of pond drying) or begin developing immediately. After hatching, individuals emerge as aquatic or semi-aquatic larvae. Individual ...
... may either enter a diapause phase to pass through harsh environmental conditions (e.g. many Lestes species in temporary ponds have diapausing eggs to pass through periods of pond drying) or begin developing immediately. After hatching, individuals emerge as aquatic or semi-aquatic larvae. Individual ...
Community patterns in sandy beaches of Chile: richness
... The absence of correlation between beach length and species richness residuals was an unexpected result. It is widely known that islands support fewer species than continental areas of similar surface (MacArthur & Wilson 1967). Likewise, several studies on landscape ecology have found that patches l ...
... The absence of correlation between beach length and species richness residuals was an unexpected result. It is widely known that islands support fewer species than continental areas of similar surface (MacArthur & Wilson 1967). Likewise, several studies on landscape ecology have found that patches l ...
Ecological Succession
... • Lichens grow larger. Some die. Decomposers arrive and break down the lichens. The dead lichens and waste materials of the decomposers enrich the ...
... • Lichens grow larger. Some die. Decomposers arrive and break down the lichens. The dead lichens and waste materials of the decomposers enrich the ...
Diversity, invasive species and extinctions in insular ecosystems
... planning and interventions, yet this goal is arguably more difficult to achieve for at least three reasons. First, most comparative studies seeking factors underlying extinction risk only explore intrinsic biological traits such as body size, life-history traits, or habitat specialization (Fisher & ...
... planning and interventions, yet this goal is arguably more difficult to achieve for at least three reasons. First, most comparative studies seeking factors underlying extinction risk only explore intrinsic biological traits such as body size, life-history traits, or habitat specialization (Fisher & ...
Coexistence and invasibility in a two-species competition
... (Leigh et al., 2004). Historically, this problem has been approached at two distinct levels. On the one hand, focus has been put on the detailed mechanisms of interaction between species (e.g., intra- and inter-specific competitions) caused by their differentiation in exploiting resources, resulting ...
... (Leigh et al., 2004). Historically, this problem has been approached at two distinct levels. On the one hand, focus has been put on the detailed mechanisms of interaction between species (e.g., intra- and inter-specific competitions) caused by their differentiation in exploiting resources, resulting ...
Ninety-seven million years of angiosperm-insect
... associations between the two most diverse clades of extant macroscopic organisms-angiosperms and insects. In spite of this abundance of primary data (1, 2), few investigations have documented the macroevolutionary history of angiosperm-insect associations. Most studies involving the timing of origin ...
... associations between the two most diverse clades of extant macroscopic organisms-angiosperms and insects. In spite of this abundance of primary data (1, 2), few investigations have documented the macroevolutionary history of angiosperm-insect associations. Most studies involving the timing of origin ...
Urban Vegetation
... trees, greenbelts in streets, green areas in parks, grasslands, and aquatic green spaces (Huang et al. 1990). More simply, some have divided urban vegetation into three types: relict (or remnant) natural communities retained as they were before urbanization, weed communities occupying new urban habi ...
... trees, greenbelts in streets, green areas in parks, grasslands, and aquatic green spaces (Huang et al. 1990). More simply, some have divided urban vegetation into three types: relict (or remnant) natural communities retained as they were before urbanization, weed communities occupying new urban habi ...
Unit B: Sustainable Ecosystems
... 5. Ecosystems are composed of biotic and abiotic components. Evidence of Learning: Students can … - identify and describe an ecosystem. - identify biotic and abiotic factors in an ecosystem. - explain why an ecosystem is sustainable or unsustainable. Introducing Ecosystems Ecosystem: all the living ...
... 5. Ecosystems are composed of biotic and abiotic components. Evidence of Learning: Students can … - identify and describe an ecosystem. - identify biotic and abiotic factors in an ecosystem. - explain why an ecosystem is sustainable or unsustainable. Introducing Ecosystems Ecosystem: all the living ...
06_3eTIF
... 6) Discuss the differences between intraspecific and interspecific competition. Answer: Intraspecific competition is the competition for limited resources by members of the same species. This is part of the process of natural selection and determines which individuals are most fit and will survive t ...
... 6) Discuss the differences between intraspecific and interspecific competition. Answer: Intraspecific competition is the competition for limited resources by members of the same species. This is part of the process of natural selection and determines which individuals are most fit and will survive t ...
Ch55Test_File - Milan Area Schools
... 1. The total amount of energy assimilated by photosynthesis is called _______. Answer: gross primary production 2. The amount of energy assimilated by photosynthesis after the energy used by plants for maintenance and biosynthesis is subtracted is called _______. Answer: net primary production 3. Al ...
... 1. The total amount of energy assimilated by photosynthesis is called _______. Answer: gross primary production 2. The amount of energy assimilated by photosynthesis after the energy used by plants for maintenance and biosynthesis is subtracted is called _______. Answer: net primary production 3. Al ...
Limitations on reproductive success in endemic Aquilegia
... Why many species have restricted endemic distributions whilst their close relatives are more widely distributed has long fascinated plant ecologists, biogeographers and population geneticists. Such interspecific variation in range size can in many cases be clearly associated with geographical barrier ...
... Why many species have restricted endemic distributions whilst their close relatives are more widely distributed has long fascinated plant ecologists, biogeographers and population geneticists. Such interspecific variation in range size can in many cases be clearly associated with geographical barrier ...
Ecological fitting
![](https://en.wikipedia.org/wiki/Special:FilePath/Colorado_potato_beetle.jpg?width=300)
Ecological fitting is ""the process whereby organisms colonize and persist in novel environments, use novel resources or form novel associations with other species as a result of the suites of traits that they carry at the time they encounter the novel condition.” It can be understood as a situation in which a species' interactions with its biotic and abiotic environment seem to indicate a history of coevolution, when in actuality the relevant traits evolved in response to a different set of biotic and abiotic conditions. The simplest form of ecological fitting is resource tracking, in which an organism continues to exploit the same resources, but in a new host or environment. In this framework, the organism occupies a multidimensional operative environment defined by the conditions in which it can persist, similar to the idea of the Hutchinsonian niche. In this case, a species can colonize new environments (e.g. an area with the same temperature and water regime) and/or form new species interactions (e.g. a parasite infecting a new host) which can lead to the misinterpretation of the relationship as coevolution, although the organism has not evolved and is continuing to exploit the same resources it always has. The more strict definition of ecological fitting requires that a species encounter an environment or host outside of its original operative environment and obtain realized fitness based on traits developed in previous environments that are now co-opted for a new purpose. This strict form of ecological fitting can also be expressed either as colonization of new habitat or the formation of new species interactions.