Structure and Stability of Ecological Networks resource use
... In Paper III, I investigate patterns in the size structure of one marine and six running freshwater food webs: that is, how the trophic structure of such ecological networks is governed by the body size of its interacting entities. The data for these food webs are interactions between individuals, i ...
... In Paper III, I investigate patterns in the size structure of one marine and six running freshwater food webs: that is, how the trophic structure of such ecological networks is governed by the body size of its interacting entities. The data for these food webs are interactions between individuals, i ...
Chapter 5 A Field Study of Interspecific Relationships
... students and instructors are encouraged to locate additional examples along the route; these can be recorded briefly on the Field Record Sheet C (Table 5.4). The location of each interaction and the route taken should be plotted on the map that is provided (Figure 5.1). Field records will be collect ...
... students and instructors are encouraged to locate additional examples along the route; these can be recorded briefly on the Field Record Sheet C (Table 5.4). The location of each interaction and the route taken should be plotted on the map that is provided (Figure 5.1). Field records will be collect ...
Coexistence and relative abundance in annual plant assemblages
... competitors has long been hypothesized and has received consistent empirical support for both perennial and annual systems (Black 1958; Gross and Werner 1982; Gross 1984; McConnaughay and Bazzaz 1987; Rees 1995; Eriksson 1997; Turnbull et al. 1999; Freckleton and Watkinson 2001; Leishman 2001; see L ...
... competitors has long been hypothesized and has received consistent empirical support for both perennial and annual systems (Black 1958; Gross and Werner 1982; Gross 1984; McConnaughay and Bazzaz 1987; Rees 1995; Eriksson 1997; Turnbull et al. 1999; Freckleton and Watkinson 2001; Leishman 2001; see L ...
access full article - Caister Academic Press
... actinomycetale family since they are prolific producers of secondary metabolites. Molecular genetic analyses of these organisms have revealed that the genes encoding their secondary metabolite biosynthetic pathways are clustered and range in size from five to greater than 100 kilobases (Malpartida a ...
... actinomycetale family since they are prolific producers of secondary metabolites. Molecular genetic analyses of these organisms have revealed that the genes encoding their secondary metabolite biosynthetic pathways are clustered and range in size from five to greater than 100 kilobases (Malpartida a ...
The Ecological Niche in Aquatic Ecosystems
... exceeding 3 was unusual but not bothersome in 1957, by which time physicists had already conveyed at least to the science community that not only the three dimensions of space, but also time, a fourth dimension, define physical realities of the universe. Thus, conceptually, we may think of the ecolo ...
... exceeding 3 was unusual but not bothersome in 1957, by which time physicists had already conveyed at least to the science community that not only the three dimensions of space, but also time, a fourth dimension, define physical realities of the universe. Thus, conceptually, we may think of the ecolo ...
MOLECULAR MEDICINE
... may have important biological effects, but they are rarely understood the same way drugs are. In the case of omega-3 fatty acids, studies have been hampered by the inconsistency of supplements that are not regulated like drugs and vary in content and quality. With Kang’s mice, he said, “you take awa ...
... may have important biological effects, but they are rarely understood the same way drugs are. In the case of omega-3 fatty acids, studies have been hampered by the inconsistency of supplements that are not regulated like drugs and vary in content and quality. With Kang’s mice, he said, “you take awa ...
draft species conservation plan
... The Black-flanked Rock-wallaby (Petrogale lateralis lateralis) is found on the Australian mainland and on Barrow and Salisbury islands. A population occurred on Depuch Island until at least 1962, but was extinct by 1982 (Hall & Kinnear, 1991). There are currently 26 recognised taxa of Petrogale, a g ...
... The Black-flanked Rock-wallaby (Petrogale lateralis lateralis) is found on the Australian mainland and on Barrow and Salisbury islands. A population occurred on Depuch Island until at least 1962, but was extinct by 1982 (Hall & Kinnear, 1991). There are currently 26 recognised taxa of Petrogale, a g ...
A Meta-analysis of Studies on Plant Growth
... potentially be used for this analysis. For example, a study might present RGR data for several species at both ambient and doubled CO2 levels. It would have been inadvisable to include more than one such comparison from a given experiment in the meta-analysis, as separate comparisons could not be re ...
... potentially be used for this analysis. For example, a study might present RGR data for several species at both ambient and doubled CO2 levels. It would have been inadvisable to include more than one such comparison from a given experiment in the meta-analysis, as separate comparisons could not be re ...
Ecological Risk Assessment
... about 3 months each year => Population size likely to be affected before major changes in other sub-components => this species of catfish is likely to be most affected by fishing as it's been identified as the bycatch species most at risk of depletion as it's slow-moving, easily entangled in net mes ...
... about 3 months each year => Population size likely to be affected before major changes in other sub-components => this species of catfish is likely to be most affected by fishing as it's been identified as the bycatch species most at risk of depletion as it's slow-moving, easily entangled in net mes ...
Emergence and maintenance of biodiversity in an evolutionary food
... mutations and selection lead from a single ancestor to the community shown in Fig. 1b, containing eight heterotrophic morphs in addition to the basal autotrophic resource. This result demonstrates that gradual evolution of body size alone suffices to explain the emergence of food webs with high trop ...
... mutations and selection lead from a single ancestor to the community shown in Fig. 1b, containing eight heterotrophic morphs in addition to the basal autotrophic resource. This result demonstrates that gradual evolution of body size alone suffices to explain the emergence of food webs with high trop ...
SSP Models and Strategic Habitat Conservation Presentation
... Partnership for coordinated management in time and space Shift from few to many species and habitats ...
... Partnership for coordinated management in time and space Shift from few to many species and habitats ...
Secondary succession in overgrazed Pannonian sandy
... different altitudes in sand dunes. Two sites in the low and two in the high parts of the dunes were chosen and sampled for twelve years. The initial stages are characterized by ruderal communities dominated by nitrophilous annual weeds. Ruderal vegetation was soon replaced by nutrient-poor communiti ...
... different altitudes in sand dunes. Two sites in the low and two in the high parts of the dunes were chosen and sampled for twelve years. The initial stages are characterized by ruderal communities dominated by nitrophilous annual weeds. Ruderal vegetation was soon replaced by nutrient-poor communiti ...
Ecometrics: The traits that bind the past and present together
... temperature, claw shape, and any aspect of anatomy or physiology can be measured across some subset of the organisms in a community. Because we focus on biotic interactions with the environment, our traits are easilymeasured phenotypes whose structure is closely related to their function and whose f ...
... temperature, claw shape, and any aspect of anatomy or physiology can be measured across some subset of the organisms in a community. Because we focus on biotic interactions with the environment, our traits are easilymeasured phenotypes whose structure is closely related to their function and whose f ...
The Aegean archipelago: a natural laboratory of
... such studies have followed two almost parallel lines, with recent attempts towards convergence. One line focuses on insular biotic communities, addressing questions on community composition, similarity, alpha and beta diversity, nestedness, and species co-occurrence patterns, all within the broader ...
... such studies have followed two almost parallel lines, with recent attempts towards convergence. One line focuses on insular biotic communities, addressing questions on community composition, similarity, alpha and beta diversity, nestedness, and species co-occurrence patterns, all within the broader ...
chapter 52 population ecology
... The size and activities of the human population are now among Earth’s most significant problems. With a population of over 6 billion individuals, our species requires vast amounts of materials and space, including places to live, land to grow our food, and places to dump our waste. Endlessly expand ...
... The size and activities of the human population are now among Earth’s most significant problems. With a population of over 6 billion individuals, our species requires vast amounts of materials and space, including places to live, land to grow our food, and places to dump our waste. Endlessly expand ...
interactive effects of predation and dispersal on
... from the regional pool has the potential to alter the outcome of local interactions by providing species that fill different ecological roles. I examined the consequences of invasion by fish (juvenile Lepomis macrochirus) and insect (Notonecta undulata) predators on experimental plankton communities ...
... from the regional pool has the potential to alter the outcome of local interactions by providing species that fill different ecological roles. I examined the consequences of invasion by fish (juvenile Lepomis macrochirus) and insect (Notonecta undulata) predators on experimental plankton communities ...
Species, trophic, and functional diversity in marine
... single species conservation can preserve biodiversity or communities as a whole is repeatedly questioned and depends largely in the target species life habits. Single species approach to protection has been and still is widely used for its simplicity and flagship value when facing the public opinion ...
... single species conservation can preserve biodiversity or communities as a whole is repeatedly questioned and depends largely in the target species life habits. Single species approach to protection has been and still is widely used for its simplicity and flagship value when facing the public opinion ...
Molecular evolution of the hyaluronan synthase 2 gene in mammals
... Department of Zoology and Entomology, University of Pretoria, Pretoria, South Africa The naked mole-rat (NMR) Heterocephalus glaber is a unique and fascinating mammal exhibiting many unusual adaptations to a subterranean lifestyle. The recent discovery of their resistance to cancer and exceptional l ...
... Department of Zoology and Entomology, University of Pretoria, Pretoria, South Africa The naked mole-rat (NMR) Heterocephalus glaber is a unique and fascinating mammal exhibiting many unusual adaptations to a subterranean lifestyle. The recent discovery of their resistance to cancer and exceptional l ...
Marine range shifts and species introductions
... introductions, (3) shifting species spread over an order of magnitude faster in marine than in terrestrial systems, and (4) directions of community effects were largely negative and magnitudes were often similar for shifters and introduced species; however, this comparison was limited by few data fo ...
... introductions, (3) shifting species spread over an order of magnitude faster in marine than in terrestrial systems, and (4) directions of community effects were largely negative and magnitudes were often similar for shifters and introduced species; however, this comparison was limited by few data fo ...
Latitudinal gradients in biotic niche breadth vary
... variables in turn have strong gradients over latitude, with productivity and temperature both being higher in the tropics, while climate is more variable at high latitudes [11]. These variables affect both the resources available and species’ metabolisms [12– 15], and have been proposed as determina ...
... variables in turn have strong gradients over latitude, with productivity and temperature both being higher in the tropics, while climate is more variable at high latitudes [11]. These variables affect both the resources available and species’ metabolisms [12– 15], and have been proposed as determina ...
Field Test of the Effectiveness of Ladybirds in Controlling Aphids
... ity of cases, the adults are winged and can easily move between patches, whereas the immature stages are confined to one patch throughout their development, and their survival is associated with the quality of the patch of prey in which they were born. Therefore, the fitness of most predators (espec ...
... ity of cases, the adults are winged and can easily move between patches, whereas the immature stages are confined to one patch throughout their development, and their survival is associated with the quality of the patch of prey in which they were born. Therefore, the fitness of most predators (espec ...
Evaluating least-cost model predictions with empirical
... Abstract: The loss and fragmentation of forest habitats by human land use are recognised as important factors influencing the decline of forest-dependent fauna. Mammal species that are dependent upon forest habitats are particularly sensitive to habitat loss and fragmentation because they have highl ...
... Abstract: The loss and fragmentation of forest habitats by human land use are recognised as important factors influencing the decline of forest-dependent fauna. Mammal species that are dependent upon forest habitats are particularly sensitive to habitat loss and fragmentation because they have highl ...
Sink habitats can alter ecological outcomes for competing species
... return to the source habitat (B. Kotler, personal communication). While ideal free populations in which individuals move freely to maximize their per-capita fitness do not occupy sink habitats under equilibrium conditions (Holt 1985), they may occupy sink habitats under non-equilibrium conditions (H ...
... return to the source habitat (B. Kotler, personal communication). While ideal free populations in which individuals move freely to maximize their per-capita fitness do not occupy sink habitats under equilibrium conditions (Holt 1985), they may occupy sink habitats under non-equilibrium conditions (H ...
Threatened Species Lists - Friends of the Brush-tailed Rock
... females; tree hollows are favoured but spherical nests have been found under the bark of eucalypts and in shredded bark in tree forks. Appear to be mainly solitary, each individual using several nests, with males having non-exclusive home-ranges of about 0.68 hectares and females about 0.35 hectares ...
... females; tree hollows are favoured but spherical nests have been found under the bark of eucalypts and in shredded bark in tree forks. Appear to be mainly solitary, each individual using several nests, with males having non-exclusive home-ranges of about 0.68 hectares and females about 0.35 hectares ...
Conservation Through Management – Cut Wood as Substrate for
... the last century, conservation biology related to forests is a young discipline, its coming of age in Sweden represented by the first IUCN-adapted Red Lists and their associated educational materials (Ingelög et al. 1984; Ehnström and Waldén 1986). Together with Red Lists from other Scandinavian cou ...
... the last century, conservation biology related to forests is a young discipline, its coming of age in Sweden represented by the first IUCN-adapted Red Lists and their associated educational materials (Ingelög et al. 1984; Ehnström and Waldén 1986). Together with Red Lists from other Scandinavian cou ...