Negative competitive effects of invasive plants change with time
... Abstract. Competitive impacts of invasive species may vary across invaded ranges, owing to spatiotemporal gradients in adapted traits and abundance levels. Higher levels of interspecific competition in recently invaded areas may lead invaders to be more competitive. Here, using meta-analysis and hom ...
... Abstract. Competitive impacts of invasive species may vary across invaded ranges, owing to spatiotemporal gradients in adapted traits and abundance levels. Higher levels of interspecific competition in recently invaded areas may lead invaders to be more competitive. Here, using meta-analysis and hom ...
The TKMG Tree-kangaroo Fact-File - The Tree
... genus is Dendrolagus, meaning tree-(dendro) -hare(lagus). In tandem with the genus name the scientific species name in the Lumholtz’s case is: Dendrolagus lumholtzi. Kangaroos started to evolve from possum-like ancestors that lived in the trees (i.e. were arboreal) about 50 million years ago. Eviden ...
... genus is Dendrolagus, meaning tree-(dendro) -hare(lagus). In tandem with the genus name the scientific species name in the Lumholtz’s case is: Dendrolagus lumholtzi. Kangaroos started to evolve from possum-like ancestors that lived in the trees (i.e. were arboreal) about 50 million years ago. Eviden ...
Trait-mediated assembly processes predict successional changes in
... Interspecific differences in relative fitness can cause local dominance by a single species. However, stabilizing interspecific niche differences can promote local diversity. Understanding these mechanisms requires that we simultaneously quantify their effects on demography and link these effects to ...
... Interspecific differences in relative fitness can cause local dominance by a single species. However, stabilizing interspecific niche differences can promote local diversity. Understanding these mechanisms requires that we simultaneously quantify their effects on demography and link these effects to ...
Natural Selection - HCC Learning Web
... less brightly colored • Endler also transferred drab colored guppies (with many predators) to a pool with few predators • As predicted, over time the population became more brightly colored Copyright © 2008 Pearson Education Inc., publishing as Pearson Benjamin Cummings ...
... less brightly colored • Endler also transferred drab colored guppies (with many predators) to a pool with few predators • As predicted, over time the population became more brightly colored Copyright © 2008 Pearson Education Inc., publishing as Pearson Benjamin Cummings ...
Orconectes rusticus_Govas_2011
... Rusty crayfish young are released around June or July and typically mature at ten molts over the course of a little over a year (Gunderson 2008). At this point the molting process slows and in spring males molt into a sexually inactive form II until summer when they molt again and return to form I. ...
... Rusty crayfish young are released around June or July and typically mature at ten molts over the course of a little over a year (Gunderson 2008). At this point the molting process slows and in spring males molt into a sexually inactive form II until summer when they molt again and return to form I. ...
Chapter 2 Morphometric measurement selection: an invertebrate case study
... University of Pretoria etd – Janse van Rensburg, L (2006) These include: P. eatoni – four characters: PL (P < 0.05), TL, EW, EE (P < 0.001); B. randi four characters: TL, EE, O (P < 0.01), A (P < 0.001), B. parvulus - two characters: TL, EW (P < 0.05), B. elongatus – two characters: TL (P < 0.05), ...
... University of Pretoria etd – Janse van Rensburg, L (2006) These include: P. eatoni – four characters: PL (P < 0.05), TL, EW, EE (P < 0.001); B. randi four characters: TL, EE, O (P < 0.01), A (P < 0.001), B. parvulus - two characters: TL, EW (P < 0.05), B. elongatus – two characters: TL (P < 0.05), ...
REPRODUCTIVE CHARACTER DISPLACEMENT AND SIGNAL ONTOGENY IN A SYMPATRIC
... Our test requires that the subjects’ signals can be captured digitally and mapped into a continuous multivariate signal space representing signal structure (sensu Nelson and Marler 1990), within which distances between species can be measured quantitatively. The concepts of our test are outlined in ...
... Our test requires that the subjects’ signals can be captured digitally and mapped into a continuous multivariate signal space representing signal structure (sensu Nelson and Marler 1990), within which distances between species can be measured quantitatively. The concepts of our test are outlined in ...
HELODERMA SUSPECTUM(Gila Monster). PREY
... HELODERMA SUSPECTUM (Gila Monster). PREY. Gila Monsters are specialized nest predators; their diet includes eggs of ground-nesting birds and reptiles, and juvenile mammals (e.g., Ammospermophilus leucurus, Neotoma albigula, and Sylvilagus audubonii; Beck 2005. Biology of Gila Monsters and Beaded Liz ...
... HELODERMA SUSPECTUM (Gila Monster). PREY. Gila Monsters are specialized nest predators; their diet includes eggs of ground-nesting birds and reptiles, and juvenile mammals (e.g., Ammospermophilus leucurus, Neotoma albigula, and Sylvilagus audubonii; Beck 2005. Biology of Gila Monsters and Beaded Liz ...
species replacement during early secondary succession
... no more than 0.5% of what they had been the previous year (Table 2). Mean plant size also changed markedly between years. The few plants present in 1992 (year 1) were extremely large (mean mass of 16.4 g/plant); thereafter average plant mass declined, with plants in 1994 (year 3) weighing 0.01–1.5% ...
... no more than 0.5% of what they had been the previous year (Table 2). Mean plant size also changed markedly between years. The few plants present in 1992 (year 1) were extremely large (mean mass of 16.4 g/plant); thereafter average plant mass declined, with plants in 1994 (year 3) weighing 0.01–1.5% ...
Chapter 5 – Detection - Plant Health Australia
... fly. This is also relevant to most other fruit flies, although differences may occur with regard to host preference and the relationship between developmental rate and temperature. Typically, fruit flies lay their eggs in semi-mature and ripe fruit. The female fruit fly has a retractable, sharp egg- ...
... fly. This is also relevant to most other fruit flies, although differences may occur with regard to host preference and the relationship between developmental rate and temperature. Typically, fruit flies lay their eggs in semi-mature and ripe fruit. The female fruit fly has a retractable, sharp egg- ...
Eco-evolutionary buffering: rapid evolution facilitates regional
... even while local priority effects remain strong. This eco-evolutionary buffering of rare species ...
... even while local priority effects remain strong. This eco-evolutionary buffering of rare species ...
Eco07
... Deer populations are often cited as examples of populations that tend to irrupt when predator pressure is reduced. The most violent irruptions occur when a species is introduced into a new area. Negative interactions become less negative with time if the ecosystem is sufficiently stable and spati ...
... Deer populations are often cited as examples of populations that tend to irrupt when predator pressure is reduced. The most violent irruptions occur when a species is introduced into a new area. Negative interactions become less negative with time if the ecosystem is sufficiently stable and spati ...
Feeding on survival-food: gelatinous plankton as
... Key words: Engraulis anchoita, gut contents, predation, Iasis zonaria, acoustics, south-western Atlantic Ocean ...
... Key words: Engraulis anchoita, gut contents, predation, Iasis zonaria, acoustics, south-western Atlantic Ocean ...
Factors controlling the upper and lower limits of the intertidal
... which that level remains dry. This is particularly so in the western part of the Wadden Sea, where the tidal curve has an aberrant shape: its top part is very flat and the high water (HW) period lasts several hours at a level close to the HW level of that day. Thus, organisms living at high intertid ...
... which that level remains dry. This is particularly so in the western part of the Wadden Sea, where the tidal curve has an aberrant shape: its top part is very flat and the high water (HW) period lasts several hours at a level close to the HW level of that day. Thus, organisms living at high intertid ...
34. Chanas, B., Pawlik, J.R. 1995.
... of Caribbean reef sponges. Sponge species with high concentrations of spicules in their tissues, and with variable spicule morphologies, were chosen for the experiments. The presence of spicules did not alter food palatability relative to controls for any of the sponges tested. Analyses of ash conte ...
... of Caribbean reef sponges. Sponge species with high concentrations of spicules in their tissues, and with variable spicule morphologies, were chosen for the experiments. The presence of spicules did not alter food palatability relative to controls for any of the sponges tested. Analyses of ash conte ...
S. altissima
... Introduction The goldenrod fly (Eurosta solidaginis) is an herbivorous gallmaker found in prairie and forest habitats in the Upper Midwestern United States (1). The flies attack two species of goldenrod, Solidago altissima (“altissima flies”) and S. gigantea (“gigantea flies”) (1). A tumor-like grow ...
... Introduction The goldenrod fly (Eurosta solidaginis) is an herbivorous gallmaker found in prairie and forest habitats in the Upper Midwestern United States (1). The flies attack two species of goldenrod, Solidago altissima (“altissima flies”) and S. gigantea (“gigantea flies”) (1). A tumor-like grow ...
Full text in pdf format
... population dynamics and evolution. However, less attention has been devoted to the consequences of indirect effects of predators on prey behavior. For example, to avoid predation many animals restrict their activities to physical refugia and adopt low-mobility Mestyles, yet the consequences of these ...
... population dynamics and evolution. However, less attention has been devoted to the consequences of indirect effects of predators on prey behavior. For example, to avoid predation many animals restrict their activities to physical refugia and adopt low-mobility Mestyles, yet the consequences of these ...
Pollination by Hymenopterans and Ec Hymenopterans and
... nectar pollen and other fluid secretions for pollinators as a source of food. Pollinators on the other hand benefit the plant by ensuring the continuity of their life through sexual reproduction with effective pollination. Plants provide the pollinator with the appropriate clues and positive reinfor ...
... nectar pollen and other fluid secretions for pollinators as a source of food. Pollinators on the other hand benefit the plant by ensuring the continuity of their life through sexual reproduction with effective pollination. Plants provide the pollinator with the appropriate clues and positive reinfor ...
Lundiana 5-2 Dezembro 2004
... Programa de Pós-Graduação em Ecologia, Conservação e Manejo da Vida Silvestre, Instituto de Ciências Biológicas, UFMG. CP 486, 31270901, Belo Horizonte - MG, Brasil. E-mail: [email protected]. 2 Laboratório de Gestão de Reservatórios Tropicais, Departamento de Biologia Geral, Instituto de Ciência ...
... Programa de Pós-Graduação em Ecologia, Conservação e Manejo da Vida Silvestre, Instituto de Ciências Biológicas, UFMG. CP 486, 31270901, Belo Horizonte - MG, Brasil. E-mail: [email protected]. 2 Laboratório de Gestão de Reservatórios Tropicais, Departamento de Biologia Geral, Instituto de Ciência ...
Resource partitioning and overlap in three sympatric species of Ips
... Abstract. The bark beetles Ips pini, I. perroti and I. grandicollis are sympatric in pine forests of the north central United States. They share the same limited phloem resource and often coexist within the same host trees. We tested whether phloem resources are partitioned in time and space by meas ...
... Abstract. The bark beetles Ips pini, I. perroti and I. grandicollis are sympatric in pine forests of the north central United States. They share the same limited phloem resource and often coexist within the same host trees. We tested whether phloem resources are partitioned in time and space by meas ...
mechanical properties of the chitin-calcium
... filled with water and blotted dry to remove excess water. Samples that had been removed from water for over five minutes were not used in data analysis due to clear structural changes observed in the valve (i.e., curling) and subsequent inflated material property values. Samples were then mounted on ...
... filled with water and blotted dry to remove excess water. Samples that had been removed from water for over five minutes were not used in data analysis due to clear structural changes observed in the valve (i.e., curling) and subsequent inflated material property values. Samples were then mounted on ...
Fruit characters as a basis of fruit choice and seed dispersal in a
... watches from hides at fruit trees; analysis of stomach contents collected outside the reserve; and feeding tests in captivity (murid rodents only). Data from previous years on diets of the same populations (Gautier-Hion 1971, 1977, 1978, 1980 for monkeys; Emmons 1981 for squirrels; Duplantier 1982 f ...
... watches from hides at fruit trees; analysis of stomach contents collected outside the reserve; and feeding tests in captivity (murid rodents only). Data from previous years on diets of the same populations (Gautier-Hion 1971, 1977, 1978, 1980 for monkeys; Emmons 1981 for squirrels; Duplantier 1982 f ...
Mass-Scaled Rates of Respiration and Intrinsic
... Abstract: This review compares rates of oxygen uptake and intrinsic growth of very small invertebrate species near 20 "C with those of larger invertebrate and unicellular animals by means of the allometric relation (rate a Mb where M = mass). Respiration rates of small species of major invertebrate ...
... Abstract: This review compares rates of oxygen uptake and intrinsic growth of very small invertebrate species near 20 "C with those of larger invertebrate and unicellular animals by means of the allometric relation (rate a Mb where M = mass). Respiration rates of small species of major invertebrate ...
Within-population spatial synchrony in mast seeding of North American oaks
... Ozark Mountain region of Missouri and one in western Massachusetts (Table 1). Data from the three California areas consisted of yearly visual counts of acorns on individual trees (Koenig et al. 1994a); a detailed description of data collection methods is available elsewhere (Koenig et al. 1994b). At ...
... Ozark Mountain region of Missouri and one in western Massachusetts (Table 1). Data from the three California areas consisted of yearly visual counts of acorns on individual trees (Koenig et al. 1994a); a detailed description of data collection methods is available elsewhere (Koenig et al. 1994b). At ...
Ficus rubiginosa
Ficus rubiginosa, the rusty fig, Port Jackson fig, or little-leaf fig (damun in the Sydney language) is a species of flowering plant in the family Moraceae that is native to eastern Australia. It is a banyan of the genus Ficus which contains around 750 species worldwide in warm climates, including the common fig (Ficus carica). Ficus rubiginosa can grow to 30 m (100 ft) high and nearly as wide with a buttressed trunk, and glossy green leaves.