DE Science Elementary What is Succession?
... usually reintroduced to the ecosystem more quickly than happens during primary succession. Plant and animal communities already existed before the disturbance that leads to secondary succession. Therefore, the soil is often richer than in areas where primary succession occurs. Also, some species may ...
... usually reintroduced to the ecosystem more quickly than happens during primary succession. Plant and animal communities already existed before the disturbance that leads to secondary succession. Therefore, the soil is often richer than in areas where primary succession occurs. Also, some species may ...
The relationship between biodiversity and ecosystem functioning in
... profound impacts on functioning of natural and managed ecosystems and the ability of ecosystems to deliver ecological services to human societies. Work on simplified ecosystems in which the diversity of a single trophic level is manipulated shows that diversity can enhance ecosystem processes such as ...
... profound impacts on functioning of natural and managed ecosystems and the ability of ecosystems to deliver ecological services to human societies. Work on simplified ecosystems in which the diversity of a single trophic level is manipulated shows that diversity can enhance ecosystem processes such as ...
Recent advances in ecological stoichiometry: insights for population
... individuals, biomass, or C, without considering that this transfer can be linked to the transfer of other elements (such as P and N). The mass balance of multiple elements in chemical reactions can constrain biological processes, and can have major ecological consequences. For example, the highly va ...
... individuals, biomass, or C, without considering that this transfer can be linked to the transfer of other elements (such as P and N). The mass balance of multiple elements in chemical reactions can constrain biological processes, and can have major ecological consequences. For example, the highly va ...
The 2005 Vermont Acid Lake Biomonitoring Program Water Quality Division Heather Pembrook (
... Leeches, which require a pH of at least 5, are abundant in the littoral zone of Little Pond and are absent on Branch Pond. The pH on Little (5.2) is slightly above their tolerance while the pH on Branch is below tolerance (4.9). The overall richness on Little Pond was greater than Branch Pond. The i ...
... Leeches, which require a pH of at least 5, are abundant in the littoral zone of Little Pond and are absent on Branch Pond. The pH on Little (5.2) is slightly above their tolerance while the pH on Branch is below tolerance (4.9). The overall richness on Little Pond was greater than Branch Pond. The i ...
Recent advances in ecological stoichiometry: insights for population
... individuals, biomass, or C, without considering that this transfer can be linked to the transfer of other elements (such as P and N). The mass balance of multiple elements in chemical reactions can constrain biological processes, and can have major ecological consequences. For example, the highly va ...
... individuals, biomass, or C, without considering that this transfer can be linked to the transfer of other elements (such as P and N). The mass balance of multiple elements in chemical reactions can constrain biological processes, and can have major ecological consequences. For example, the highly va ...
Evaluating the role of ecological isolation in maintaining the species
... planting three males and three females in a 1 m2 area, simulating a small founder population as might naturally occur. In previous studies in the area, Goulson and Jerrim (1997) mapped local populations of Silene and 27% of populations recorded consisted of 6 or fewer plants, and so this population ...
... planting three males and three females in a 1 m2 area, simulating a small founder population as might naturally occur. In previous studies in the area, Goulson and Jerrim (1997) mapped local populations of Silene and 27% of populations recorded consisted of 6 or fewer plants, and so this population ...
Herbivory on woody plants and induced responses in two similar
... response (Hjältén et al 1993). In this study, the accumulated effects of many years of browsing on physical traits of plants are considered, which means that the specific browsing pattern during the most recent seasons is less important. Despite the fact that spines and thorns can be easily manipula ...
... response (Hjältén et al 1993). In this study, the accumulated effects of many years of browsing on physical traits of plants are considered, which means that the specific browsing pattern during the most recent seasons is less important. Despite the fact that spines and thorns can be easily manipula ...
Knowing Your Warblers
... was thus not reticent about downplaying his earlier papers (MacArthur 1966). When he did return to the warbler paper, in a chapter on niche theory (MacArthur 1968), he refined and revisited some themes. First, in a way folks don’t do much anymore, he discussed his philosophy of science. He pointed o ...
... was thus not reticent about downplaying his earlier papers (MacArthur 1966). When he did return to the warbler paper, in a chapter on niche theory (MacArthur 1968), he refined and revisited some themes. First, in a way folks don’t do much anymore, he discussed his philosophy of science. He pointed o ...
Plant Succession: Life History and Competition
... Inversely related competitive abilities for light and a soil nutrient, generally nitrogen, are used to model changes in species composition in cases where light availability (at soil level) decreases and soil-nutrient availability increases through time. As a consequence of changes in relative compe ...
... Inversely related competitive abilities for light and a soil nutrient, generally nitrogen, are used to model changes in species composition in cases where light availability (at soil level) decreases and soil-nutrient availability increases through time. As a consequence of changes in relative compe ...
American Woodcock: Habitat Best Management
... The U.S. Department of Agriculture (USDA) prohibits discrimination in all its programs and activities on the basis of race, color, national origin, age, disability, and where applicable, sex, marital status, familial status, parental status, religion, sexual orientation, genetic information, politic ...
... The U.S. Department of Agriculture (USDA) prohibits discrimination in all its programs and activities on the basis of race, color, national origin, age, disability, and where applicable, sex, marital status, familial status, parental status, religion, sexual orientation, genetic information, politic ...
Convergence in Morphological Patterns and Community
... the rules that govern them, in fact, to determine whether such rules exist at all (cf. Lawton 1999), and, if they do, to assess their generality. The occurrence of convergent community structure would strongly indicate general governing rules. If similar selection regimes produce similarly structure ...
... the rules that govern them, in fact, to determine whether such rules exist at all (cf. Lawton 1999), and, if they do, to assess their generality. The occurrence of convergent community structure would strongly indicate general governing rules. If similar selection regimes produce similarly structure ...
Species resistance and community response to wind disturbance
... 1 Severe winds are the predominant cause of natural disturbance in temperate forests of north-eastern and north-central North America. Conceptual models of the effects of wind disturbance have traditionally focused on the impacts of catastrophic disturbances and have painted a simple picture of how ...
... 1 Severe winds are the predominant cause of natural disturbance in temperate forests of north-eastern and north-central North America. Conceptual models of the effects of wind disturbance have traditionally focused on the impacts of catastrophic disturbances and have painted a simple picture of how ...
Species richness and evenness respond in a
... an evenness index that is mathematically independent from richness across its range of values (Smith and Wilson 1996). Abbreviations will be used in the text as follows: species richness (Sa), evenness based on the Simpson’s index (Ea = [1/D]/S) and the Shannon’s index ( Ja0 ¼ H 0 = ln S), and Simps ...
... an evenness index that is mathematically independent from richness across its range of values (Smith and Wilson 1996). Abbreviations will be used in the text as follows: species richness (Sa), evenness based on the Simpson’s index (Ea = [1/D]/S) and the Shannon’s index ( Ja0 ¼ H 0 = ln S), and Simps ...
Ecological Modelling Mathematical model of livestock and
... to compete with other species. We perform numerical simulations of spatially extended metapopulations assemblages of the system, which allow us to incorporate the effects of habitat heterogeneity and destruction. The numerical results are compared with those obtained from mean field calculations. We ...
... to compete with other species. We perform numerical simulations of spatially extended metapopulations assemblages of the system, which allow us to incorporate the effects of habitat heterogeneity and destruction. The numerical results are compared with those obtained from mean field calculations. We ...
1 The northern pocket gopher (Thomomys talpoides) is a rodent
... underground burrow systems (Engeman and Witmer 2000). Gophers feed on a variety of vegetation, and can be considered keystone species in some systems due to their ability to dramatically alter both soil and vegetation structure (Cantor and Whitham 1989, Reichman and Seabloom 2002). Pocket gophers, l ...
... underground burrow systems (Engeman and Witmer 2000). Gophers feed on a variety of vegetation, and can be considered keystone species in some systems due to their ability to dramatically alter both soil and vegetation structure (Cantor and Whitham 1989, Reichman and Seabloom 2002). Pocket gophers, l ...
J. Exp. Marine Biol. Ecol. 243
... evolutionary scale, some degree of selection may still take place. That is, individuals which do not possess the genetic potential to convert to the bent morph, may be selected against where A. angelica is abundant. However, such selection is expected to be very restricted spatially, because of the ...
... evolutionary scale, some degree of selection may still take place. That is, individuals which do not possess the genetic potential to convert to the bent morph, may be selected against where A. angelica is abundant. However, such selection is expected to be very restricted spatially, because of the ...
Entomology in Ecuador - Horizon documentation-IRD
... particularly Carabidae, the most complete study is by P. Moret on the Carabidae of the Páramo in the Ecuadorian Andes (Moret 2005). The Páramos are mountain ecosystems consisting of large areas of herbaceous plants and sclerophylous shrubs, above the tree line (3400–3600 m) and below the permanent s ...
... particularly Carabidae, the most complete study is by P. Moret on the Carabidae of the Páramo in the Ecuadorian Andes (Moret 2005). The Páramos are mountain ecosystems consisting of large areas of herbaceous plants and sclerophylous shrubs, above the tree line (3400–3600 m) and below the permanent s ...
Factors Influencing Macroinvertebrate Diversity and Community
... and the replacement of taxa over time (Jocqueʹ′ et al. 2007b). In contrast, regional factors regulate species diversity by regulating which taxa and in what quantity may arrive in a community (Jocqueʹ′ et al. 2007b). Freshwater rock pools provide an excellent system for empirically testing questions ...
... and the replacement of taxa over time (Jocqueʹ′ et al. 2007b). In contrast, regional factors regulate species diversity by regulating which taxa and in what quantity may arrive in a community (Jocqueʹ′ et al. 2007b). Freshwater rock pools provide an excellent system for empirically testing questions ...
Biogeography and Zoogeography
... Biogeography = The study of the patterns of distribution of organisms, including both extant and extinct species. ...
... Biogeography = The study of the patterns of distribution of organisms, including both extant and extinct species. ...
Green Hills NCR - Parks Victoria
... management of montane grasslands and grassy woodlands’). Note, spraying of pest plants may also be required for some areas (e.g. areas subject to past disturbance) to control species that do not respond to other management techniques. - Monitor and control the establishment and spread of Blackberry ...
... management of montane grasslands and grassy woodlands’). Note, spraying of pest plants may also be required for some areas (e.g. areas subject to past disturbance) to control species that do not respond to other management techniques. - Monitor and control the establishment and spread of Blackberry ...
ESA16 Program
... University of Melbourne, Vic Conserving adaptive diversity: Genomics of climate adaptation in Eucalyptus microcarpa and implications for restoration ...
... University of Melbourne, Vic Conserving adaptive diversity: Genomics of climate adaptation in Eucalyptus microcarpa and implications for restoration ...
E English Case Study Trondheimsfjord
... almost unexploited stock with a large portion of old, large individuals, the situation has changed, so that the catches are now reduced to one third, and the large individuals have become more rare. This species needs a long time for the restitution of local stocks. BI 2060 V09 ...
... almost unexploited stock with a large portion of old, large individuals, the situation has changed, so that the catches are now reduced to one third, and the large individuals have become more rare. This species needs a long time for the restitution of local stocks. BI 2060 V09 ...
i1905e01
... factors will be removed from the population. Conversely, individuals with favourable traits will survive and show a higher rate of reproduction (see also chapter 3). This, of course, can be extended up to the species level, where such selection mechanisms determine the range of species in an ecosyst ...
... factors will be removed from the population. Conversely, individuals with favourable traits will survive and show a higher rate of reproduction (see also chapter 3). This, of course, can be extended up to the species level, where such selection mechanisms determine the range of species in an ecosyst ...
Ecological and genetic models of diversity
... genetics and community ecology suggest that the seeming lack of a general conceptual framework in community ecology might be due to an emphasis on the study of patterns (which are highly contingent) rather than basic processes (which are far more general). Much as in population genetics, only four p ...
... genetics and community ecology suggest that the seeming lack of a general conceptual framework in community ecology might be due to an emphasis on the study of patterns (which are highly contingent) rather than basic processes (which are far more general). Much as in population genetics, only four p ...
Biological Dynamics of Forest Fragments Project
The Biological Dynamics of Forest Fragments Project, originally called the Minimum Critical Size of Ecosystems Project is a large-scale ecological experiment looking at the effects of habitat fragmentation on tropical rainforest; it is one of the most expensive biology experiments ever run. The experiment, which was established in 1979 is located near Manaus, in the Brazilian Amazon. The project is jointly managed by the Smithsonian Institution and INPA, the Brazilian Institute for Research in the Amazon.The project was initiated in 1979 by Thomas Lovejoy to investigate the SLOSS debate. Initially named the Minimum Critical Size of Ecosystems Project, the project created forest fragments of sizes 1 hectare (2 acres), 10 hectares (25 acres), and 100 hectares (247 acres). Data were collected prior to the creation of the fragments and studies of the effects of fragmentation now exceed 25 years.As of October 2010 562 publications and 143 graduate dissertations and theses had emerged from the project.