Biodiversity Principles and Applications
... costly if not impossible. A self regulating, healthy system is far less costly and much easier to maintain. Third, there are aesthetic and philosophical reasons for protecting biodiversity. It's our duty and responsibility to protect it to the greatest extent we can. ...
... costly if not impossible. A self regulating, healthy system is far less costly and much easier to maintain. Third, there are aesthetic and philosophical reasons for protecting biodiversity. It's our duty and responsibility to protect it to the greatest extent we can. ...
ecological correlates of residence and non
... (2) For all species, within-species foraging diversity is significantly greater for non-resident than for resident species, indicating that individual resident species have a narrower repertoire of foraging tactics than non-resident ones. On a seasonal basis, between-species foraging diversity for n ...
... (2) For all species, within-species foraging diversity is significantly greater for non-resident than for resident species, indicating that individual resident species have a narrower repertoire of foraging tactics than non-resident ones. On a seasonal basis, between-species foraging diversity for n ...
Biodiversity on urban roundabouts—Hemiptera - Harper
... pruning and felling. In established habitats not undergoing development or other land use changes, felling is relatively uncommon, and pruning, in most cases, does little to alter habitat structure. Tree planting can be quite frequent and as such may be the most important form of arboreal habitat ma ...
... pruning and felling. In established habitats not undergoing development or other land use changes, felling is relatively uncommon, and pruning, in most cases, does little to alter habitat structure. Tree planting can be quite frequent and as such may be the most important form of arboreal habitat ma ...
10 The Conservation of Ecological Interactions
... seems clear that the simple food chain (plant–herbivore–predator) on which most pest control theory is based is unrealistic (Rosenheim et al., 1999). The good news is that food web science has developed to a stage where we are capable of sampling, visualizing and analysing complex interactions, alth ...
... seems clear that the simple food chain (plant–herbivore–predator) on which most pest control theory is based is unrealistic (Rosenheim et al., 1999). The good news is that food web science has developed to a stage where we are capable of sampling, visualizing and analysing complex interactions, alth ...
Diversity effects beyond species richness: evidence from intertidal macroalgal assemblages Francisco Arenas
... systems are profuse, studies on the relationship between diversity and ecosystem functioning in natural marine ecosystems are scarce. In the present study, we explored how different components of biodiversity influence the performance of macroalgal assemblages in natural communities (intertidal boul ...
... systems are profuse, studies on the relationship between diversity and ecosystem functioning in natural marine ecosystems are scarce. In the present study, we explored how different components of biodiversity influence the performance of macroalgal assemblages in natural communities (intertidal boul ...
Chestnut Blight Endothia parasitica
... problem because they Predate upon and compete with native species Are toxic to predators Make water turbid ...
... problem because they Predate upon and compete with native species Are toxic to predators Make water turbid ...
Understanding the Invasion Ecology of Exotic Crayfish in California
... made into the world’s largest crawfish etouffee and served piping hot to whoever would eat it. The Louisiana red swamp crayfish–yes, the same one that is a centerpiece of Cajun cuisine–is a pest species here in the Golden State, unwanted because it is elbowing out native crayfish, snails, salamander ...
... made into the world’s largest crawfish etouffee and served piping hot to whoever would eat it. The Louisiana red swamp crayfish–yes, the same one that is a centerpiece of Cajun cuisine–is a pest species here in the Golden State, unwanted because it is elbowing out native crayfish, snails, salamander ...
Ch 2: Status of the South Florida Flora
... temperate origin, 25% are of tropical or subtropical origin, and 26% are of widespread origin—occurring in both temperate and tropical regions. About 74% of the natives are herbs, while 19% are trees or shrubs and 7% are vines. Most of these plants are perennial, with annuals representing only 13% o ...
... temperate origin, 25% are of tropical or subtropical origin, and 26% are of widespread origin—occurring in both temperate and tropical regions. About 74% of the natives are herbs, while 19% are trees or shrubs and 7% are vines. Most of these plants are perennial, with annuals representing only 13% o ...
Biotic and abiotic preferences of the cladoceran invader
... 5). Both Limnosida and Daphnia showed increased clearance rates with increasing particle size. There was also a tendency for increased clearance rates with increasing animal size for both species. Limnosida had considerably lower clearance rates than D. magna (Fig. 5a,c). The combined experiments wi ...
... 5). Both Limnosida and Daphnia showed increased clearance rates with increasing particle size. There was also a tendency for increased clearance rates with increasing animal size for both species. Limnosida had considerably lower clearance rates than D. magna (Fig. 5a,c). The combined experiments wi ...
Facilitation among plants as an insurance policy for diversity in
... usually overlap: (ccushion and copen, see Fig. 1, left panel Venn diagrams as a conceptual representation). The size of ccushion and copen can vary so that along the cases where ccushion > copen, there could be also cases where ccushion and copen did not differ or even ccushion < copen. The latter ca ...
... usually overlap: (ccushion and copen, see Fig. 1, left panel Venn diagrams as a conceptual representation). The size of ccushion and copen can vary so that along the cases where ccushion > copen, there could be also cases where ccushion and copen did not differ or even ccushion < copen. The latter ca ...
Species extinction: Frequency and biogeography
... closely monitored in recent years, so the disappearance of familiar species should have been noted. Of all the reef denizens, the fishes are the best known. In places such as the Florida Keys or Hawaii, any extinctions occurring during the past 50 years would have been recorded. As noted, only two m ...
... closely monitored in recent years, so the disappearance of familiar species should have been noted. Of all the reef denizens, the fishes are the best known. In places such as the Florida Keys or Hawaii, any extinctions occurring during the past 50 years would have been recorded. As noted, only two m ...
Understanding co‐occurrence by modelling species simultaneously
... possibly due to the fact these species occurred in similar habitats that were not fully described by the environmental variables included in the JSDM. Eucalypt species that interbreed had similar environmental responses but had negative residual co-occurrence. One explanation is that interbreeding s ...
... possibly due to the fact these species occurred in similar habitats that were not fully described by the environmental variables included in the JSDM. Eucalypt species that interbreed had similar environmental responses but had negative residual co-occurrence. One explanation is that interbreeding s ...
Linking ecological niche, community ecology and biogeography
... dispersal distance (a), dispersal kernel thinness (p), strength of Allee effects (C), phenology (order placement for each species: 1st – Ssp-th) and body masses (Ba for adults, By for young or juveniles and Bs for seeds). Life form was the first trait to be drawn, to determine the trait interval fro ...
... dispersal distance (a), dispersal kernel thinness (p), strength of Allee effects (C), phenology (order placement for each species: 1st – Ssp-th) and body masses (Ba for adults, By for young or juveniles and Bs for seeds). Life form was the first trait to be drawn, to determine the trait interval fro ...
Species Redundancy and Ecosystem Reliability
... Species redundancy stems from the compensatory abilities of species within functional groups. Local extinction of species within functional groups is often followed by compensatory growth of others, which effectively leads to a replacement of the contributions of lost species to overall group functi ...
... Species redundancy stems from the compensatory abilities of species within functional groups. Local extinction of species within functional groups is often followed by compensatory growth of others, which effectively leads to a replacement of the contributions of lost species to overall group functi ...
Forestry and Agricultural Management Can Enhance Biodiversity
... labor-intensive plantation management. Native pecans, because of their genetic diversity, are generally less susceptible to disease than many planted varieties. Although managing an operation to maintain or increase biodiversity may not result in maximum production, requiring additional acres to pro ...
... labor-intensive plantation management. Native pecans, because of their genetic diversity, are generally less susceptible to disease than many planted varieties. Although managing an operation to maintain or increase biodiversity may not result in maximum production, requiring additional acres to pro ...
Twenty years of community dynamics in a mixed conifer – broad
... Betula, etc.), a typical forest type of that region (Tatewaki 1958), a selection system (single-tree selection) has been widely employed since its exploitation began in the early 20th century as a superior option to manage natural forests. Most forests have experienced at least one instance of harve ...
... Betula, etc.), a typical forest type of that region (Tatewaki 1958), a selection system (single-tree selection) has been widely employed since its exploitation began in the early 20th century as a superior option to manage natural forests. Most forests have experienced at least one instance of harve ...
Vegetational changes over an eleven-year period in
... occurred throughout the property, but these historically disturbed areas have reverted naturally to a composition primarily of native herbaceous species typical for blackland prairies such as indiangrass (Sorghastrum nutans), little bluestem (Schizachyrium scoparium), meadow dropseed (Sporobolus com ...
... occurred throughout the property, but these historically disturbed areas have reverted naturally to a composition primarily of native herbaceous species typical for blackland prairies such as indiangrass (Sorghastrum nutans), little bluestem (Schizachyrium scoparium), meadow dropseed (Sporobolus com ...
Temporal variability in patterns of association among fish species on
... (species richness, abundance of particular species) to aspects of the habitat (other than surface area) offered by particular reefs (Sale & Douglas 1984). Subsequent simulation work, using the data base compiled from 10 censuses over 4 yr to 1981, confirmed that the structure of the assemblages was ...
... (species richness, abundance of particular species) to aspects of the habitat (other than surface area) offered by particular reefs (Sale & Douglas 1984). Subsequent simulation work, using the data base compiled from 10 censuses over 4 yr to 1981, confirmed that the structure of the assemblages was ...
Adapt or disperse: understanding species persistence
... and/or survival of genotypes. However, at the current time scale of global change phenotypic plasticity seems to prevail over genetic adaptation as a way species adjust to enhanced temperatures. In one of the few studies comparing the importance of phenotypic plasticity over genetic adaptation, a ge ...
... and/or survival of genotypes. However, at the current time scale of global change phenotypic plasticity seems to prevail over genetic adaptation as a way species adjust to enhanced temperatures. In one of the few studies comparing the importance of phenotypic plasticity over genetic adaptation, a ge ...
- ResearchOnline@JCU
... were no longer evident in Australia, while they remained in the Bahamas, indicating that post-recruitment interactions may or may not obscure patterns established at recruitment. If the patterns we observed at recruitment were the result of consumption by predators, why would predators disproportion ...
... were no longer evident in Australia, while they remained in the Bahamas, indicating that post-recruitment interactions may or may not obscure patterns established at recruitment. If the patterns we observed at recruitment were the result of consumption by predators, why would predators disproportion ...
Temporal stability of European rocky shore assemblages
... A subset of nine datasets including the experimental removal of canopy-forming macroalgae were further used to test our hypothesis on the effects of the loss of this morphological group on stability and underlying mechanisms (Table 1). Canopy-forming species varied among sites (Table 1). Except for ...
... A subset of nine datasets including the experimental removal of canopy-forming macroalgae were further used to test our hypothesis on the effects of the loss of this morphological group on stability and underlying mechanisms (Table 1). Canopy-forming species varied among sites (Table 1). Except for ...
migration - Princeton University
... lifetime (e.g., salmon) or only part of a circuit before they die, such as insects in which successive generations continue the journey their predecessors began. Should we exclude such species from the ‘‘migratory’’ category despite other aspects of behavior, physiology, and life history held in com ...
... lifetime (e.g., salmon) or only part of a circuit before they die, such as insects in which successive generations continue the journey their predecessors began. Should we exclude such species from the ‘‘migratory’’ category despite other aspects of behavior, physiology, and life history held in com ...
How geographic distance and depth drive ecological variability and
... conservation measures. The geographic structure of populations generally results from spatial distribution patterns that are related to historic or current barriers between local communities, such as geographic distance, environmental patchiness and environmental gradients that tend to keep populati ...
... conservation measures. The geographic structure of populations generally results from spatial distribution patterns that are related to historic or current barriers between local communities, such as geographic distance, environmental patchiness and environmental gradients that tend to keep populati ...
American Bullfrog - Oregon State University
... amphibians and is a contributor to many dwindling frog populations around the world. The chytrid fungus can be fatal because it thickens the skin of organisms to the point that they are no longer able to breathe and it causes skin sloughing. The larval/ tadpole is less susceptible to this problem be ...
... amphibians and is a contributor to many dwindling frog populations around the world. The chytrid fungus can be fatal because it thickens the skin of organisms to the point that they are no longer able to breathe and it causes skin sloughing. The larval/ tadpole is less susceptible to this problem be ...
Causes and Consequences of Invasive Plants in Wetlands
... and node-bearing plant fragments can both establish new plants. European strains were introduced to North America (and are still used) for forage and streambank erosion control. Few species remain where this plant dominates (Kercher et al., In press). Wetlands with enhanced runoff, sediments, and nu ...
... and node-bearing plant fragments can both establish new plants. European strains were introduced to North America (and are still used) for forage and streambank erosion control. Few species remain where this plant dominates (Kercher et al., In press). Wetlands with enhanced runoff, sediments, and nu ...
Introduced species
An introduced, alien, exotic, non-indigenous, or non-native species, or simply an introduction, is a species living outside its native distributional range, which has arrived there by human activity, either deliberate or accidental. Non-native species can have various effects on the local ecosystem. Introduced species that become established and spread beyond the place of introduction are called invasive species. Some have a negative effect on a local ecosystem. Some introduced species may have no negative effect or only minor impact. Some species have been introduced intentionally to combat pests. They are called biocontrols and may be regarded as beneficial as an alternative to pesticides in agriculture for example. In some instances the potential for being beneficial or detrimental in the long run remains unknown. A list of some introduced species is given in a separate article.The effects of introduced species on natural environments have gained much scrutiny from scientists, governments, farmers and others.