DISSERTATION VIABILITY AND INVASIVE POTENTIAL OF HYBRIDS BETWEEN YELLOW (LINARIA VULGARIS)
... Caswell (2000) suggests it may be long-distance dispersal, even infrequent, which governs the rate of invasion. Therefore, it is likely a combination of dispersal distances (long and short) which ultimately govern in-site invasion and expansion off-site; this is supported by Levin et al. (2003) who ...
... Caswell (2000) suggests it may be long-distance dispersal, even infrequent, which governs the rate of invasion. Therefore, it is likely a combination of dispersal distances (long and short) which ultimately govern in-site invasion and expansion off-site; this is supported by Levin et al. (2003) who ...
View PDF - Cramer Fish Sciences
... hypotheses that continue to be debated and tested by ecologists today. The first principle predicts that species richness will increase with increasing spatial heterogeneity, as observed in many other taxa and as predicted by niche theory (e.g. 1, 91). Both the second and third principles embody asp ...
... hypotheses that continue to be debated and tested by ecologists today. The first principle predicts that species richness will increase with increasing spatial heterogeneity, as observed in many other taxa and as predicted by niche theory (e.g. 1, 91). Both the second and third principles embody asp ...
Habitat Selection and Indirect Interactions in Fish Communities
... become piscivorous at larger sizes. Vendace is a pelagic species specialized in eating zooplankton. Vendace was expected to affect biotic interactions and habitat use of roach and perch, both directly and indirectly. I used monitoring data to examine how species distribution patterns, as well as pop ...
... become piscivorous at larger sizes. Vendace is a pelagic species specialized in eating zooplankton. Vendace was expected to affect biotic interactions and habitat use of roach and perch, both directly and indirectly. I used monitoring data to examine how species distribution patterns, as well as pop ...
View Chapter 11. Strategy for Stabilization of the OIP Target Plant Taxa
... versus using a single source must be weighed. For normally outcrossing plants with small populations, random genetic drift may play a larger role in the genetic structure of a population than natural selection. The consequence of this is often a reduction in fitness known as inbreeding depression. S ...
... versus using a single source must be weighed. For normally outcrossing plants with small populations, random genetic drift may play a larger role in the genetic structure of a population than natural selection. The consequence of this is often a reduction in fitness known as inbreeding depression. S ...
Part A - Riverland Ramsar site ecological character description
... the non-wetland areas does not impact on the ecological character of the Riverland Ramsar Site, whereas the inclusion of Lake Woolpolool has enhanced the waterbird and vegetation diversity of the site (RIS in prep.). The revised boundary was incorporated into a revised RIS (RIS in prep.) which has b ...
... the non-wetland areas does not impact on the ecological character of the Riverland Ramsar Site, whereas the inclusion of Lake Woolpolool has enhanced the waterbird and vegetation diversity of the site (RIS in prep.). The revised boundary was incorporated into a revised RIS (RIS in prep.) which has b ...
Unifying sources and sinks in ecology andEarth sciences
... specific situations, such as ‘Allee’ and ‘black-hole’ sinks (Holt, 2011). This terminological profusion suggests that we have reached a point where the source and sink concepts need to be re-examined, so that greater clarity and greater consistency is attained across disciplines. Failure to do so mi ...
... specific situations, such as ‘Allee’ and ‘black-hole’ sinks (Holt, 2011). This terminological profusion suggests that we have reached a point where the source and sink concepts need to be re-examined, so that greater clarity and greater consistency is attained across disciplines. Failure to do so mi ...
Lesson Overview
... An organism’s niche describes not only the environment where it lives, but how it interacts with biotic and abiotic factors in the environment. In other words, an organism’s niche includes not only the physical and biological aspects of its environment, but also the way in which the organism uses th ...
... An organism’s niche describes not only the environment where it lives, but how it interacts with biotic and abiotic factors in the environment. In other words, an organism’s niche includes not only the physical and biological aspects of its environment, but also the way in which the organism uses th ...
Effects of physical disturbance and habitat
... The studies for this thesis were conducted in the northern Gulf of Riga (I, III, IV) and southwestern Gulf of Finland (II, V), Baltic Sea (Fig. 1). The Gulf of Riga is situated in the northern Baltic Sea and is a relatively shallow water body. The gulf is connected to the Baltic Proper via narrow st ...
... The studies for this thesis were conducted in the northern Gulf of Riga (I, III, IV) and southwestern Gulf of Finland (II, V), Baltic Sea (Fig. 1). The Gulf of Riga is situated in the northern Baltic Sea and is a relatively shallow water body. The gulf is connected to the Baltic Proper via narrow st ...
1999, pp. 1955-1969 © 1999 by the Ecological Society of America
... plant traits for any species. Here we address this issue by testing for biome differences in the slope and intercept of interspecific relationships among leaf traits: longevity, net photosynthetic capacity (Amax), leaf diffusive conductance (Gs), specific leaf area (SLA), and nitrogen (N) status, fo ...
... plant traits for any species. Here we address this issue by testing for biome differences in the slope and intercept of interspecific relationships among leaf traits: longevity, net photosynthetic capacity (Amax), leaf diffusive conductance (Gs), specific leaf area (SLA), and nitrogen (N) status, fo ...
SLOs - 3.4 Species Relationships
... By the end of this unit, students should be able to: Explain the difference between learned and innate behaviour Explain what is meant by stereotyped and state when such behaviour is used Explain what is meant by fixed action pattern and state when such behaviour is used Describe the role of ...
... By the end of this unit, students should be able to: Explain the difference between learned and innate behaviour Explain what is meant by stereotyped and state when such behaviour is used Explain what is meant by fixed action pattern and state when such behaviour is used Describe the role of ...
Ecological Role of Dry-Habitat Chimpanzees (Pan troglodytes
... the driest, most open, and seasonal habitats inhabited by chimpanzees. Unlike most primatological studies which employ methods that include focal follows, this study focused instead on observing ‘resource patches’ for chimpanzees. Patch focals allow for the observation of all animals within a study ...
... the driest, most open, and seasonal habitats inhabited by chimpanzees. Unlike most primatological studies which employ methods that include focal follows, this study focused instead on observing ‘resource patches’ for chimpanzees. Patch focals allow for the observation of all animals within a study ...
Record 1 of 23
... Abstract: Terrestrial ecosystems originate when particular plant species attain dominance at specific locations under specific environmental regimes. Ecosystems terminate, gradually or abruptly, when the dominant species or functional types are replaced by others, usually owing to environmental chan ...
... Abstract: Terrestrial ecosystems originate when particular plant species attain dominance at specific locations under specific environmental regimes. Ecosystems terminate, gradually or abruptly, when the dominant species or functional types are replaced by others, usually owing to environmental chan ...
Morphological and genetic evaluation of the hydrocoral Millepora
... Millepora highlight the high degree of skeletal polymorphism encountered in the genus. Two previous studies (Martínez-Estalella 1982; de Weerdt 1984) concluded that species distinctions were uncertain due to the high morphological variability among the colonies within each taxon and the overlap of s ...
... Millepora highlight the high degree of skeletal polymorphism encountered in the genus. Two previous studies (Martínez-Estalella 1982; de Weerdt 1984) concluded that species distinctions were uncertain due to the high morphological variability among the colonies within each taxon and the overlap of s ...
Below-ground ectomycorrhizal communities: the effect of small scale
... In this article I will focus on the causes of spatial and temporal variation in below-ground ECM communities, and also how this variation affects the realized ECM communities. The sampling methods applied to above-ground (sporocarp) and below-ground (root tip) ECM communities are also briefly review ...
... In this article I will focus on the causes of spatial and temporal variation in below-ground ECM communities, and also how this variation affects the realized ECM communities. The sampling methods applied to above-ground (sporocarp) and below-ground (root tip) ECM communities are also briefly review ...
Inertia: the discrepancy between individual and common good in
... we will explore whether, under what conditions, and to what extent natural selection can produce dispersal and prospecting rules that are suboptimal for populations. We will support this idea by providing examples that clearly illustrate how population persistence and extinction risks can be linked ...
... we will explore whether, under what conditions, and to what extent natural selection can produce dispersal and prospecting rules that are suboptimal for populations. We will support this idea by providing examples that clearly illustrate how population persistence and extinction risks can be linked ...
Incorporating Hydrologic Data and Ecohydrologic
... for US rangelands (USDA, 2013). An ES is a conceptual division of the landscape based on unique physical attributes (climate, soils, landscape position, and topography) that govern the ability to produce characteristic vegetation and to respond to management and disturbances. Individual ecological s ...
... for US rangelands (USDA, 2013). An ES is a conceptual division of the landscape based on unique physical attributes (climate, soils, landscape position, and topography) that govern the ability to produce characteristic vegetation and to respond to management and disturbances. Individual ecological s ...
introduction - RUJA - Universidad de Jaén
... toxic effect (due to the insecticide) hiding potential interaction at lower mixtures concentrations. In addition to mixture, treatment frequency was not relevant because has been also hidden for the drastic effect of the insecticide since the first application. The ecological interactions play a rol ...
... toxic effect (due to the insecticide) hiding potential interaction at lower mixtures concentrations. In addition to mixture, treatment frequency was not relevant because has been also hidden for the drastic effect of the insecticide since the first application. The ecological interactions play a rol ...
Moths and Mountains: Diversity, Altitude and Latitude
... Figure 6.5 Total number of species encountered in each elevational band at (a) Mengla, (b) Ailao Shan and (c) Lijiang ............................................................................... 224 Figure 6.6 NMDS Ordination plot of (a) Mengla (tropical) moth assemblages across four elevational ...
... Figure 6.5 Total number of species encountered in each elevational band at (a) Mengla, (b) Ailao Shan and (c) Lijiang ............................................................................... 224 Figure 6.6 NMDS Ordination plot of (a) Mengla (tropical) moth assemblages across four elevational ...
Potential for Entomopathogenic Nematodes in Biological Control:
... with cascading effects to plants. Based on our knowledge of aboveground arthropod food webs, such information is critical for understanding when and under what conditions EPN might act as effective biological control agents. Toward synthesizing the available information on EPN and their ability to s ...
... with cascading effects to plants. Based on our knowledge of aboveground arthropod food webs, such information is critical for understanding when and under what conditions EPN might act as effective biological control agents. Toward synthesizing the available information on EPN and their ability to s ...
Communities - UNAM Sisal
... advanced importantly since the first edition appeared, and readers will notice those changes are particularly reflected by new content in the chapters on food webs (Chapter 6) and the causes and consequences of diversity (Chapter 12). The second edition also appears at a time when some prominent eco ...
... advanced importantly since the first edition appeared, and readers will notice those changes are particularly reflected by new content in the chapters on food webs (Chapter 6) and the causes and consequences of diversity (Chapter 12). The second edition also appears at a time when some prominent eco ...
Effects of intra- and interspecific competition on
... obtained from single-species toxicity tests in which ecological interactions such as competition are not taken into account. This limits the valid extrapolation of single-species toxicity test results to field conditions, where indirect and/or sublethal toxicant-related effects might occur (Van den ...
... obtained from single-species toxicity tests in which ecological interactions such as competition are not taken into account. This limits the valid extrapolation of single-species toxicity test results to field conditions, where indirect and/or sublethal toxicant-related effects might occur (Van den ...
New Zealand as ecosystems - Department of Conservation
... practical outcome, New Zealand’s Protected Natural Area Programme (PNAP), would appear, ostensibly, to use the term ecosystem to encompass and link many different communities. In practice, however, the programme’s primary survey element, the ecological unit—a tandem of vegetation type and landform t ...
... practical outcome, New Zealand’s Protected Natural Area Programme (PNAP), would appear, ostensibly, to use the term ecosystem to encompass and link many different communities. In practice, however, the programme’s primary survey element, the ecological unit—a tandem of vegetation type and landform t ...
Mycorrhizal Fungi in Successional Environments
... mediated by mycorrhizal fungi, are important (Connell et al., 1987; Connell and Slatyer, 1977; Pickett et al., 1987). For example, the interactions among establishing plants and the resultant distribution of resources, including photosynthates, are likely to alter environmental conditions that influ ...
... mediated by mycorrhizal fungi, are important (Connell et al., 1987; Connell and Slatyer, 1977; Pickett et al., 1987). For example, the interactions among establishing plants and the resultant distribution of resources, including photosynthates, are likely to alter environmental conditions that influ ...
effects of algal and herbivore diversity on the partitioning of biomass
... the mechanisms that govern how biomass is partitioned within and among trophic levels. Here I report results of a laboratory microcosm experiment crossing eight algal compositions (seven monocultures and a polyculture of all seven species) with five ciliate herbivore compositions (no herbivores, thr ...
... the mechanisms that govern how biomass is partitioned within and among trophic levels. Here I report results of a laboratory microcosm experiment crossing eight algal compositions (seven monocultures and a polyculture of all seven species) with five ciliate herbivore compositions (no herbivores, thr ...
Standard PDF - Wiley Online Library
... et al. 2003, Sebastián-González et al. 2013, Moleón et al. 2014a). Prey (in a wide sense) size is closely associated with the strength and direction of inter-specific interactions, which in turn determine the structure and dynamics of food webs and other ecological networks (Woodward et al. 2005) ...
... et al. 2003, Sebastián-González et al. 2013, Moleón et al. 2014a). Prey (in a wide sense) size is closely associated with the strength and direction of inter-specific interactions, which in turn determine the structure and dynamics of food webs and other ecological networks (Woodward et al. 2005) ...
Ecological fitting
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.