Genetic variation and community change selection, evolution, and
... Fig. 1. Genetically based feedbacks through which one species alters its associated community, and community changes exert a reciprocal effect on the fitness of the original species, may occur when a series of conditions are met. In this diagram, ‘spaces’ represent a set of possible values for genoty ...
... Fig. 1. Genetically based feedbacks through which one species alters its associated community, and community changes exert a reciprocal effect on the fitness of the original species, may occur when a series of conditions are met. In this diagram, ‘spaces’ represent a set of possible values for genoty ...
Multiple diversity–stability mechanisms enhance population and
... zooplankton richness treatments of zero-, one-, and twospecies communities by manipulating three ‘‘dominant’’ species previously identified as functionally important and among the most abundant species both regionally and within our experimental pond ecosystems: Daphnia pulex (Dap), Scapholeberis muc ...
... zooplankton richness treatments of zero-, one-, and twospecies communities by manipulating three ‘‘dominant’’ species previously identified as functionally important and among the most abundant species both regionally and within our experimental pond ecosystems: Daphnia pulex (Dap), Scapholeberis muc ...
Long-footed Potoroo
... Victoria have demonstrated that this species is active in a range of topographic positions from creeks to ridge tops (Hill and Triggs 1985; Scotts and Seebeck 1989; Green et al. 1998). The Long-footed Potoroo is considered to be a dietary specialist, dependent on the fruiting bodies of underground o ...
... Victoria have demonstrated that this species is active in a range of topographic positions from creeks to ridge tops (Hill and Triggs 1985; Scotts and Seebeck 1989; Green et al. 1998). The Long-footed Potoroo is considered to be a dietary specialist, dependent on the fruiting bodies of underground o ...
The Adaptive Significance of Coloration in Mammals
... colored fur are used for intraspecific signaling. Sexual selection is associated with flamboyant ornamentation in a minority of primates and other restricted mammalian taxa, but to a far lesser extent than in birds. Interspecific signaling among mammals includes aposematic coloration, exaggeration o ...
... colored fur are used for intraspecific signaling. Sexual selection is associated with flamboyant ornamentation in a minority of primates and other restricted mammalian taxa, but to a far lesser extent than in birds. Interspecific signaling among mammals includes aposematic coloration, exaggeration o ...
Effects of land use on plant diversity
... of nutrients only favour single species, which then dominate the community (Bobbink et al. 2010). Dominant species should also be responsible for lower species richness in monoculture plantations, where light availability is decreased for species in the understorey, but it has been found that effect ...
... of nutrients only favour single species, which then dominate the community (Bobbink et al. 2010). Dominant species should also be responsible for lower species richness in monoculture plantations, where light availability is decreased for species in the understorey, but it has been found that effect ...
UNIVERSIDADE FEDERAL DO RIO GRANDE DO - Lume
... length (Lt) in millimeter and total weight (Wt) in grams were measured. Individuals were dissected to register liver (Wl) and stomach (Ws) weight, and intestine length (Li). Stomach repletion index (RI) and gonadosomatic index (GSI) were estimated following the formula adapted from Santos [17]. Thes ...
... length (Lt) in millimeter and total weight (Wt) in grams were measured. Individuals were dissected to register liver (Wl) and stomach (Ws) weight, and intestine length (Li). Stomach repletion index (RI) and gonadosomatic index (GSI) were estimated following the formula adapted from Santos [17]. Thes ...
Spatial variation in keystone effects: small mammal diversity
... each study area (WGS84 projection; Zone 13N). Within the United States, colony sizes generally varied between 10 and 100 ha, although some may have been smaller or larger. We did not measure colony sites at all areas during 2003. The Mexican sites were more variable, with the largest colony reported ...
... each study area (WGS84 projection; Zone 13N). Within the United States, colony sizes generally varied between 10 and 100 ha, although some may have been smaller or larger. We did not measure colony sites at all areas during 2003. The Mexican sites were more variable, with the largest colony reported ...
video slide - CARNES AP BIO | "Nothing in biology makes
... Biodiversity and Human Welfare • Human biophilia allows us to recognize the value of biodiversity for its own sake • Species diversity brings humans practical benefits • In the United States, 25% of prescriptions contain substances originally derived from plants • For example, the rosy periwinkle c ...
... Biodiversity and Human Welfare • Human biophilia allows us to recognize the value of biodiversity for its own sake • Species diversity brings humans practical benefits • In the United States, 25% of prescriptions contain substances originally derived from plants • For example, the rosy periwinkle c ...
Assemblage and interaction structure of the anemonefish
... 2005), social interactions (Buston 2003; Mitchell and Dill 2005; Buston and Cant 2006), and breeding behaviour (Munday et al. 2006), in part because we have a relatively complete knowledge of the diversity of anemonefish and anemones and the extent of their interaction (Fautin and Allen 1997). In co ...
... 2005), social interactions (Buston 2003; Mitchell and Dill 2005; Buston and Cant 2006), and breeding behaviour (Munday et al. 2006), in part because we have a relatively complete knowledge of the diversity of anemonefish and anemones and the extent of their interaction (Fautin and Allen 1997). In co ...
The role of nurse plants in the restoration of degraded environments
... Through the process known as “hydraulic lift”, roots of certain species lift water stored in deep soil layers and release it near the soil surface. Once in the surface layers, the water can be used by understory plants, and improves their water status and growth rate. Nutrients in the understory are ...
... Through the process known as “hydraulic lift”, roots of certain species lift water stored in deep soil layers and release it near the soil surface. Once in the surface layers, the water can be used by understory plants, and improves their water status and growth rate. Nutrients in the understory are ...
Quantifying and testing coexistence mechanisms arising from
... recruitment alter the competition that occurs during recruitment by altering the density of individuals that are competing for the resources needed for recruitment. For example, if more tree seedlings appear in the forest due to environmental effects, competition between seedlings can be expected to ...
... recruitment alter the competition that occurs during recruitment by altering the density of individuals that are competing for the resources needed for recruitment. For example, if more tree seedlings appear in the forest due to environmental effects, competition between seedlings can be expected to ...
Spar genetic analysis of two invasive species of Cichla (Tucunaré
... ABSTRACT. The introduction of exotic species in lake ecosystems has been greatly highlighted in the literature worldwide. Since introduction may threaten diversity of native fish, the issue turns up to be of paramount importance. Ecological effects may be predation, competition, parasitism or geneti ...
... ABSTRACT. The introduction of exotic species in lake ecosystems has been greatly highlighted in the literature worldwide. Since introduction may threaten diversity of native fish, the issue turns up to be of paramount importance. Ecological effects may be predation, competition, parasitism or geneti ...
Angyal and Korsos Mecsek
... microhabitat during the last glacial period. Furthermore, due to the isolation of such habitats, a high degree of endemism could have developed in cave millipedes. It is also a well-known fact, that predation and competition for resources are less intensive in subterranean habitats then in epigean o ...
... microhabitat during the last glacial period. Furthermore, due to the isolation of such habitats, a high degree of endemism could have developed in cave millipedes. It is also a well-known fact, that predation and competition for resources are less intensive in subterranean habitats then in epigean o ...
Similarity and difference in vegetation structure of three desert shrub
... chosen in this study were under the same temperate climatic and phenological conditions but with different microhabitats. The objective of this study was to explore the similarity or difference in vegetation structure (including species composition, biomass and community structure) during the course ...
... chosen in this study were under the same temperate climatic and phenological conditions but with different microhabitats. The objective of this study was to explore the similarity or difference in vegetation structure (including species composition, biomass and community structure) during the course ...
1 - Biology Department | UNC Chapel Hill
... Fig. 5.1: Four environments containing different species assemblages, consistent within each ...
... Fig. 5.1: Four environments containing different species assemblages, consistent within each ...
- Wiley Online Library
... unaware of any system where the sequential pattern of pathogen accumulation, decline of invasive species and recovery of native species has been documented. Second, invasive species hosting abundant pathogens may cause increased disease on co-occurring native hosts and reduce their competitive suppr ...
... unaware of any system where the sequential pattern of pathogen accumulation, decline of invasive species and recovery of native species has been documented. Second, invasive species hosting abundant pathogens may cause increased disease on co-occurring native hosts and reduce their competitive suppr ...
Comparative Country Study
... A species is a group of organisms that can successfully mate with each other and reproduce. Examples include the giant octopus, Atlantic salmon, Pacific tree frog, Polar Bear, or stellar jay. Remember that a species is very specific; selecting “horse” or “bear” is too broad. Do not make a hasty deci ...
... A species is a group of organisms that can successfully mate with each other and reproduce. Examples include the giant octopus, Atlantic salmon, Pacific tree frog, Polar Bear, or stellar jay. Remember that a species is very specific; selecting “horse” or “bear” is too broad. Do not make a hasty deci ...
Diet, Morphology, and Interspecific Killing in Carnivora
... Resource overlap is commonly used to assess the potential for competition (Schoener 1983); therefore, we tested ...
... Resource overlap is commonly used to assess the potential for competition (Schoener 1983); therefore, we tested ...
Nonrandom extinction patterns can modulate pest control service
... intensification and expansion for ecosystem services. Regulating services, like pollination and pest control, generally decline with species loss. In nature, however, relationships between service provision and species richness are not always strong, partially because anthropogenic disturbances purge ...
... intensification and expansion for ecosystem services. Regulating services, like pollination and pest control, generally decline with species loss. In nature, however, relationships between service provision and species richness are not always strong, partially because anthropogenic disturbances purge ...
- Wiley Online Library
... decision to classify roots as dead only when they were no longer visible meant that we may have overestimated the absolute root life span. Our results confirm earlier studies on root turnover (Aerts et al. 1989; Steltzer & Bowman 1998). However, those studies used species differing in growth form an ...
... decision to classify roots as dead only when they were no longer visible meant that we may have overestimated the absolute root life span. Our results confirm earlier studies on root turnover (Aerts et al. 1989; Steltzer & Bowman 1998). However, those studies used species differing in growth form an ...
Parallel life history evolution in mouthbrooding cichlids from the
... the substrate in Lakes Malawi (37), Tanganyika (38, 39), and Victoria (40). Midwater-spawning females spin round to catch their eggs, and the laying of fewer eggs at a time may increase retrieval rates and reduce predation risk. However, this advantage does not apply to rocky-shore species that lay ...
... the substrate in Lakes Malawi (37), Tanganyika (38, 39), and Victoria (40). Midwater-spawning females spin round to catch their eggs, and the laying of fewer eggs at a time may increase retrieval rates and reduce predation risk. However, this advantage does not apply to rocky-shore species that lay ...
Succession Student PPT
... are often the first to begin secondary succession. As they grow they create shade. Shade-loving plants, such as mountain laurel, grow and create even more shade. The increased shade creates a lack of sunlight for the sun-loving plants. Because of the shade, the sunloving plants fail to reproduce and ...
... are often the first to begin secondary succession. As they grow they create shade. Shade-loving plants, such as mountain laurel, grow and create even more shade. The increased shade creates a lack of sunlight for the sun-loving plants. Because of the shade, the sunloving plants fail to reproduce and ...
Fish communities in the east african great lakes = Peuplement
... its individuals live and breed. Such a general definition does not account for the observation that the preferred habitat of a speciesvaries with the age of the individuals, nor does it account for the fact that some species may spend most of their adult lives in a particular area where they feed, b ...
... its individuals live and breed. Such a general definition does not account for the observation that the preferred habitat of a speciesvaries with the age of the individuals, nor does it account for the fact that some species may spend most of their adult lives in a particular area where they feed, b ...
Why do brittle stars emit light? Behavioural and evolutionary
... the five luminous species exhibit a visual signal o f defense against their predators. The biolum inescence is thus most likely involved in the defense against predation in these species. D uring the day, there was no difference in predation o f luminous brittle stars and the control species ...
... the five luminous species exhibit a visual signal o f defense against their predators. The biolum inescence is thus most likely involved in the defense against predation in these species. D uring the day, there was no difference in predation o f luminous brittle stars and the control species ...
The coexistence
... is mutually beneficial. Following myrmecological tradition the term will not be used in this paper. This review will only consider the interspecific forms of social parasitism, the obligatory parasitism between ant species. Various types of obligatory ant social parasitism Social parasitism is expre ...
... is mutually beneficial. Following myrmecological tradition the term will not be used in this paper. This review will only consider the interspecific forms of social parasitism, the obligatory parasitism between ant species. Various types of obligatory ant social parasitism Social parasitism is expre ...
Bifrenaria
Bifrenaria, abbreviated Bif. in horticultural trade, is a genus of plant in family Orchidaceae. It contains 20 species found in Panama, Trinidad and South America. There are no known uses for them, but their abundant, and at first glance artificial, flowers, make them favorites of orchid growers.The genus can be split in two clearly distinct groups: one of highly robust plants with large flowers, that encompass the first species to be classified under the genus Bifrenaria; other of more delicate plants with smaller flowers occasionally classified as Stenocoryne or Adipe. There are two additional species that are normally classified as Bifrenaria, but which molecular analysis indicate to belong to different orchid groups entirely. One is Bifrenaria grandis which is endemic to Bolívia and which is now placed in Lacaena, and Bifrenaria steyermarkii, an inhabitant of the northern Amazon Forest, which does not have an alternative classification.