impacts of invasive stream salmonids on native fish: using meta
... We further examined whether the magnitude of the alien impact depended on the study type. For this purpose, we divided the studies based on whether they were conducted in (i) laboratory channels, (ii) fish enclosures in natural streams or semi-natural outdoor channels, or (iii) natural streams (both ...
... We further examined whether the magnitude of the alien impact depended on the study type. For this purpose, we divided the studies based on whether they were conducted in (i) laboratory channels, (ii) fish enclosures in natural streams or semi-natural outdoor channels, or (iii) natural streams (both ...
The Extinction of the Glaucus Macaw
... that this species even survived into this century. Which begs the question what happened to the third big blue macaw? Understanding why species are decline is often very difficult and requires much detailed investigation. For this reason it is unlikely that we will ever know exactly why the Glaucus ...
... that this species even survived into this century. Which begs the question what happened to the third big blue macaw? Understanding why species are decline is often very difficult and requires much detailed investigation. For this reason it is unlikely that we will ever know exactly why the Glaucus ...
View or download OIP Achatinella species Management
... The following monitoring proposal was presented in the 2009 year-end report. Monitoring snail populations in the Koolau Mountains can be a destructive undertaking. In the past, intensive monitoring has resulted in extensive trampling of habitat. In order to avoid negative impacts like this, OANRP pr ...
... The following monitoring proposal was presented in the 2009 year-end report. Monitoring snail populations in the Koolau Mountains can be a destructive undertaking. In the past, intensive monitoring has resulted in extensive trampling of habitat. In order to avoid negative impacts like this, OANRP pr ...
Brown Anole - Service and Outreach
... Feeding: Brown anoles will often eat hatchling green anoles, a behavior that may be affecting green anole populations in the United States. In their native habitats brown anoles eat insects, spiders, worms, snails, and slugs. In Florida, brown anoles also eat other small vertebrates including other ...
... Feeding: Brown anoles will often eat hatchling green anoles, a behavior that may be affecting green anole populations in the United States. In their native habitats brown anoles eat insects, spiders, worms, snails, and slugs. In Florida, brown anoles also eat other small vertebrates including other ...
Does natural selection organize ecosystems for the maintenance of
... as the fragment averaged 55 tree species apiece (Kellman et al. 1994). Moreover, ‘edge effects’ in these natural fragments are minimal, compared with those in fragments recently isolated by human activity. Newly arrived human hunters with stone-tipped weapons killed off Beringia’s mammoths and other ...
... as the fragment averaged 55 tree species apiece (Kellman et al. 1994). Moreover, ‘edge effects’ in these natural fragments are minimal, compared with those in fragments recently isolated by human activity. Newly arrived human hunters with stone-tipped weapons killed off Beringia’s mammoths and other ...
Demographics of a Geographically
... limbs that were out of sight from the water’s surface and examined them for egg masses. We used care to ensure that all egg masses remained attached to their original substrate. We counted eggs in a sub-sample of four haphazardly chosen masses to document the mean number of eggs per mass. We determi ...
... limbs that were out of sight from the water’s surface and examined them for egg masses. We used care to ensure that all egg masses remained attached to their original substrate. We counted eggs in a sub-sample of four haphazardly chosen masses to document the mean number of eggs per mass. We determi ...
Network structure beyond food webs: mapping nontrophic and
... Thiel et al. 2007 for reviews). Non-trophic interactions between intertidal species are also relatively well known across the phyletically diverse community, which encompasses a broad range of body sizes, life forms, and evolutionary histories. Many non-trophic interactions in this system have been ...
... Thiel et al. 2007 for reviews). Non-trophic interactions between intertidal species are also relatively well known across the phyletically diverse community, which encompasses a broad range of body sizes, life forms, and evolutionary histories. Many non-trophic interactions in this system have been ...
Network structure beyond food webs: mapping non
... Thiel et al. 2007 for reviews). Non-trophic interactions between intertidal species are also relatively well known across the phyletically diverse community, which encompasses a broad range of body sizes, life forms, and evolutionary histories. Many non-trophic interactions in this system have been ...
... Thiel et al. 2007 for reviews). Non-trophic interactions between intertidal species are also relatively well known across the phyletically diverse community, which encompasses a broad range of body sizes, life forms, and evolutionary histories. Many non-trophic interactions in this system have been ...
effects of top predator species on direct
... and indirect effects throughout the community. We evaluated this assumption by conducting experiments to compare the direct and indirect effects of three top-predator species, belonging to the same hunting spider guild, on the same species of grasshopper and on oldfield grasses and herbs. Observatio ...
... and indirect effects throughout the community. We evaluated this assumption by conducting experiments to compare the direct and indirect effects of three top-predator species, belonging to the same hunting spider guild, on the same species of grasshopper and on oldfield grasses and herbs. Observatio ...
59548_1 - Griffith Research Online
... It is usually considered more effective to control the problem of mosquitoes closer to their source; the larval habitat where the developing mosquitoes are restricted to water bodies. If the saltmarsh habitat is not modified, by runnelling OMWM or some other method, then the most effective control ...
... It is usually considered more effective to control the problem of mosquitoes closer to their source; the larval habitat where the developing mosquitoes are restricted to water bodies. If the saltmarsh habitat is not modified, by runnelling OMWM or some other method, then the most effective control ...
How Do Species Interactions Affect Evolutionary Dynamics Across
... Many species interactions are negative. Species compete for finite resources, and predators and parasites reduce the density of their prey and host species. If increasing diversity tended to reduce the average effective population size across species, species in diverse communities would have lower g ...
... Many species interactions are negative. Species compete for finite resources, and predators and parasites reduce the density of their prey and host species. If increasing diversity tended to reduce the average effective population size across species, species in diverse communities would have lower g ...
Sample pages 2 PDF
... species turnover among sites or different patches (Brawn et al. 2001). Such definition, shows interesting implications at landscape scale and on meta-population dynamics for all those species that are spatially structured. ...
... species turnover among sites or different patches (Brawn et al. 2001). Such definition, shows interesting implications at landscape scale and on meta-population dynamics for all those species that are spatially structured. ...
Habitat filtering and niche differentiation jointly explain
... possible if the strength of inter-specific interactions is lower than that of intra-specific interactions (Chesson, 2000; Murrell, 2010). A signature of this process stabilizing species diversity is that species’ per capita growth rates decline as their relative abundance increases within communitie ...
... possible if the strength of inter-specific interactions is lower than that of intra-specific interactions (Chesson, 2000; Murrell, 2010). A signature of this process stabilizing species diversity is that species’ per capita growth rates decline as their relative abundance increases within communitie ...
Chapter 53 - Community Ecology Powerpoint
... • Dominant species are those that are most abundant or have the highest biomass • Biomass is the total mass of all individuals in a population • Dominant species exert powerful control over the occurrence and distribution of other species ...
... • Dominant species are those that are most abundant or have the highest biomass • Biomass is the total mass of all individuals in a population • Dominant species exert powerful control over the occurrence and distribution of other species ...
TEEB Training
... MA’s major findings regarding ecosystems The structure and functioning of the world’s ecosystems has changed rapidly the past 50 years 20% of the world’s coral reefs have been lost and more than 20% are degraded 35% of mangrove area has been lost in the last several decades Rate of species ext ...
... MA’s major findings regarding ecosystems The structure and functioning of the world’s ecosystems has changed rapidly the past 50 years 20% of the world’s coral reefs have been lost and more than 20% are degraded 35% of mangrove area has been lost in the last several decades Rate of species ext ...
Succession Power Point Notes - ESC-2
... How does secondary succession help restore equilibrium to a region destroyed by a flood? F ...
... How does secondary succession help restore equilibrium to a region destroyed by a flood? F ...
Workshop II: Fox Ecology, Stockholm, August 17 2015
... individuals taking part in breeding could play an important role. This could be explained by increased carrying capacity, either by higher density or extended distribution. It is therefore important to look into the data with both spatial and biological aspect. The regulation and limitation of the I ...
... individuals taking part in breeding could play an important role. This could be explained by increased carrying capacity, either by higher density or extended distribution. It is therefore important to look into the data with both spatial and biological aspect. The regulation and limitation of the I ...
Status of the Plains Spadefoot - Alberta Conservation Association
... records are therefore rare. This report reviews information on the Plains Spadefoot in Alberta, as a step in updating its status in the province. The Plains Spadefoot generally occurs in the plains of North America. The species reaches its northern range limit in Alberta where it occurs in the south ...
... records are therefore rare. This report reviews information on the Plains Spadefoot in Alberta, as a step in updating its status in the province. The Plains Spadefoot generally occurs in the plains of North America. The species reaches its northern range limit in Alberta where it occurs in the south ...
Status of the Plains Spadefoot in Alberta
... records are therefore rare. This report reviews information on the Plains Spadefoot in Alberta, as a step in updating its status in the province. The Plains Spadefoot generally occurs in the plains of North America. The species reaches its northern range limit in Alberta where it occurs in the south ...
... records are therefore rare. This report reviews information on the Plains Spadefoot in Alberta, as a step in updating its status in the province. The Plains Spadefoot generally occurs in the plains of North America. The species reaches its northern range limit in Alberta where it occurs in the south ...
Invasions: the trail behind, the path ahead, and a test
... species introduced to Australia had undergone significant morphological change within c. 100 years. The magnitude of these changes was substantial, with several species doubling or halving crucial traits like plant height and leaf area. We have reached the point where additional case studies demonstr ...
... species introduced to Australia had undergone significant morphological change within c. 100 years. The magnitude of these changes was substantial, with several species doubling or halving crucial traits like plant height and leaf area. We have reached the point where additional case studies demonstr ...
only means for most plants to colonize new habitats or escape
... genetics, biogeography, evolutionary ecology and phylogenetics. The common ground was to understand the pervasive influences that seed dispersal has on plant populations, and how this feeds back on animals shaping multiple aspects of their life histories and evolutionary diversification. These mutua ...
... genetics, biogeography, evolutionary ecology and phylogenetics. The common ground was to understand the pervasive influences that seed dispersal has on plant populations, and how this feeds back on animals shaping multiple aspects of their life histories and evolutionary diversification. These mutua ...
ESA 2010 handbook - Ecological Society of Australia
... ecology was derided as merely descriptive. But it moved into a period of very active experimental work, testing hypotheses about the dynamics of ecological systems, mainly in habitats that were easy to access. This phase was successful and enlightening, but the challenge remains to scale up, and to ...
... ecology was derided as merely descriptive. But it moved into a period of very active experimental work, testing hypotheses about the dynamics of ecological systems, mainly in habitats that were easy to access. This phase was successful and enlightening, but the challenge remains to scale up, and to ...
Ontogenetic diet shifts and resource partitioning among piscivorous
... on independent sampling efforts risk (1) underestimating availability when microhabitats available to fish are undersampled, and (2) overestimating availability when large numbers of prey that are actually invulnerable to predation are sampled (Wallace 1981). In effect, the method estimates food ava ...
... on independent sampling efforts risk (1) underestimating availability when microhabitats available to fish are undersampled, and (2) overestimating availability when large numbers of prey that are actually invulnerable to predation are sampled (Wallace 1981). In effect, the method estimates food ava ...
the ecological consequences of changes in biodiversity
... diversity–stability hypothesis to hold for a community trait, such as total community biomass, communities that are more diverse must have greater temporal stability. If total community abundance is independent of diversity, the diversity–stability hypothesis requires that the summed variances and/o ...
... diversity–stability hypothesis to hold for a community trait, such as total community biomass, communities that are more diverse must have greater temporal stability. If total community abundance is independent of diversity, the diversity–stability hypothesis requires that the summed variances and/o ...
the role of competition in structuring ant
... Since the nineteenth century with the publication of "On the Origin of Species by Means of Natural Selection or the Preservation of Favoured Races in the Struggle for Life", Charles Darwin made inquiries about the coexistence of species and how its distribution was given, and explains using his meta ...
... Since the nineteenth century with the publication of "On the Origin of Species by Means of Natural Selection or the Preservation of Favoured Races in the Struggle for Life", Charles Darwin made inquiries about the coexistence of species and how its distribution was given, and explains using his meta ...
Habitat conservation
Habitat conservation is a land management practice that seeks to conserve, protect and restore habitat areas for wild plants and animals, especially conservation reliant species, and prevent their extinction, fragmentation or reduction in range. It is a priority of many groups that cannot be easily characterized in terms of any one ideology.