Attwater`s Prairie-Chicken Business Plan
... environment in which prairie-chickens could live. But those actions did not seem to slow the pace at which the population was declining. Reproduction and survival were low, even on the refuge, because of the biological problems caused by low population size — including breakdown of the highly evolve ...
... environment in which prairie-chickens could live. But those actions did not seem to slow the pace at which the population was declining. Reproduction and survival were low, even on the refuge, because of the biological problems caused by low population size — including breakdown of the highly evolve ...
What is a Riparian Zone?
... Riparian zones are areas of vegetation between freshwater ecosystems (streams, rivers, lakes) and land that serve a large ecological roll. Riparian habitats offer diverse habitat types for different plants and animals., serve as pathways for migrating organisms5 Riparian ecosystems are often threate ...
... Riparian zones are areas of vegetation between freshwater ecosystems (streams, rivers, lakes) and land that serve a large ecological roll. Riparian habitats offer diverse habitat types for different plants and animals., serve as pathways for migrating organisms5 Riparian ecosystems are often threate ...
The paradox of enrichment in phytoplankton by induced competitive
... In our model we assume that the birth rates of phytoplankton species are increasing with the increase in nutrient level. As a consequence, we expect an increase in the possibility of coexistence because of more nutrients for all species1. However, we also expect that the increase in nutrients leads ...
... In our model we assume that the birth rates of phytoplankton species are increasing with the increase in nutrient level. As a consequence, we expect an increase in the possibility of coexistence because of more nutrients for all species1. However, we also expect that the increase in nutrients leads ...
Species Invasions and the Relationships between Species Diversity
... Resource competition theory predicts that numerous species can coexist if species have trade-offs in their traits and if the habitat is spatially or temporally heterogeneous (Tilman 1982, 1988). Consider a case in which plant species compete for two limiting resources and in which the habitat has sp ...
... Resource competition theory predicts that numerous species can coexist if species have trade-offs in their traits and if the habitat is spatially or temporally heterogeneous (Tilman 1982, 1988). Consider a case in which plant species compete for two limiting resources and in which the habitat has sp ...
Summary version - OnlyOnePlanet Australia
... thoughtfully in reserve design and selection. Major rivers where ecosystems remain substantially intact should be protected. Proposed models of protection for these include the establishment of a four-tiered river classification system, including 'heritage rivers' and 'conservation rivers' for speci ...
... thoughtfully in reserve design and selection. Major rivers where ecosystems remain substantially intact should be protected. Proposed models of protection for these include the establishment of a four-tiered river classification system, including 'heritage rivers' and 'conservation rivers' for speci ...
Ecosystem engineering and biodiversity in coastal sediments
... with facilitation generally being due to ecosystem engineering species (Bruno et al. 2003). Whilst Hacker and Gaines (1997) emphasised the positive eVect that facilitation by ecosystem engineers can have on community diversity in stressful environments, more recent studies indicate that ecosystem en ...
... with facilitation generally being due to ecosystem engineering species (Bruno et al. 2003). Whilst Hacker and Gaines (1997) emphasised the positive eVect that facilitation by ecosystem engineers can have on community diversity in stressful environments, more recent studies indicate that ecosystem en ...
HABITAT USE - Anole Annals
... from xeric deserts to mesic rainforests. Elevationally, water stress should be greatest at lower elevations where conditions of high temperature and low rainfall often prevail (Hertz, 1980b). The organismal consequences of living in habitats differing in aridity are straightforward; particularly for ...
... from xeric deserts to mesic rainforests. Elevationally, water stress should be greatest at lower elevations where conditions of high temperature and low rainfall often prevail (Hertz, 1980b). The organismal consequences of living in habitats differing in aridity are straightforward; particularly for ...
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 ...
The relationships between net primary productivity, human
... to determine if high productivity parks were mostly small. Correlations between human development and species richness and NPP do not identify the extent of spatial conflict between these variables (Diniz-Filho et al., 2006; O’Dea et al., 2006). There are still likely to be areas of relatively low h ...
... to determine if high productivity parks were mostly small. Correlations between human development and species richness and NPP do not identify the extent of spatial conflict between these variables (Diniz-Filho et al., 2006; O’Dea et al., 2006). There are still likely to be areas of relatively low h ...
Managing Grassland Ecosystems - Biodiversity of the Western
... Managing grassland ecosystems (Level 6) ...
... Managing grassland ecosystems (Level 6) ...
Local diversity reduces infection risk across multiple
... also reduce the infection risk incurred by a focal host species (Johnson et al., 2013). However, except for the latter, most studies have generally focussed on the effect of a single extra organism at a time on parasite transmission, and they have been performed under artificial conditions in aquari ...
... also reduce the infection risk incurred by a focal host species (Johnson et al., 2013). However, except for the latter, most studies have generally focussed on the effect of a single extra organism at a time on parasite transmission, and they have been performed under artificial conditions in aquari ...
Maintaining Water Quality while Restoring South Bay Salt Ponds to
... managed ponds to provide bird habitat, the configuration of these ponds should be altered. •To maximize water quality, former salt ponds should be restored to tidal marsh within the constraints of meeting habitat goals for birds and protecting human life and property in the South Bay. •This very lar ...
... managed ponds to provide bird habitat, the configuration of these ponds should be altered. •To maximize water quality, former salt ponds should be restored to tidal marsh within the constraints of meeting habitat goals for birds and protecting human life and property in the South Bay. •This very lar ...
BioScience - Oxford Academic
... integral to the success of humankind, who have been exploiting the genetic diversity of plants and animals for over 12,000 years (Driscoll et al. 2009). Success, however, has come at a cost: As a consequence of human-driven environmental change (the Anthropocene), the Earth is now experiencing massi ...
... integral to the success of humankind, who have been exploiting the genetic diversity of plants and animals for over 12,000 years (Driscoll et al. 2009). Success, however, has come at a cost: As a consequence of human-driven environmental change (the Anthropocene), the Earth is now experiencing massi ...
- CITA-A - Universidade dos Açores
... rarity” [16] was also proposed as a synonym of “pseudo-rarity”. In fact, when a study covers only part of the geographic range of the species (“partial analyses” sensu Gaston and Blackburn [22]), there is a great chance that the marginal part of the distribution of many species is being measured. Ps ...
... rarity” [16] was also proposed as a synonym of “pseudo-rarity”. In fact, when a study covers only part of the geographic range of the species (“partial analyses” sensu Gaston and Blackburn [22]), there is a great chance that the marginal part of the distribution of many species is being measured. Ps ...
3. and savannah ecosystems
... species (about 10 per cent of all vascular plants) of which around 60 per cent are endemic to the Mediterranean region. The other four Mediterranean-type ecosystem regions are widely recognised as biological diversity hotspots holding a disproportionate amount of global biological diversity in relat ...
... species (about 10 per cent of all vascular plants) of which around 60 per cent are endemic to the Mediterranean region. The other four Mediterranean-type ecosystem regions are widely recognised as biological diversity hotspots holding a disproportionate amount of global biological diversity in relat ...
i1905e01
... factors will be removed from the population. Conversely, individuals with favourable traits will survive and show a higher rate of reproduction (see also chapter 3). This, of course, can be extended up to the species level, where such selection mechanisms determine the range of species in an ecosyst ...
... factors will be removed from the population. Conversely, individuals with favourable traits will survive and show a higher rate of reproduction (see also chapter 3). This, of course, can be extended up to the species level, where such selection mechanisms determine the range of species in an ecosyst ...
Impacts of climate change on the future of biodiversity
... 2010). However, individuals shift their distribution to stay in quasiequilibrium with the climatic conditions they are adapted to, but they may not be adapted to other abiotic variables such as photoperiod or novel biotic interactions (Visser 2008). In these cases, micro-evolution may be needed for ...
... 2010). However, individuals shift their distribution to stay in quasiequilibrium with the climatic conditions they are adapted to, but they may not be adapted to other abiotic variables such as photoperiod or novel biotic interactions (Visser 2008). In these cases, micro-evolution may be needed for ...
OPERATION DESERT TORTOISE
... desert ecosystems. Though significant emphasis has been placed on species recovery and several projects have demonstrated successful outcomes, desert tortoise populations continue to decline across much of their home range. In the Western Mojave Desert, Photo Credit: Desert Tortoise Preserve Committ ...
... desert ecosystems. Though significant emphasis has been placed on species recovery and several projects have demonstrated successful outcomes, desert tortoise populations continue to decline across much of their home range. In the Western Mojave Desert, Photo Credit: Desert Tortoise Preserve Committ ...
Sycamore Floodplain Forest - Pennsylvania Natural Heritage Program
... As floodplains are dependent on periodic disturbance, natural flooding frequency and duration should be maintained and construction of new dams, levees or other in-stream modifications should be avoided. Activities resulting in destabilization of the banks or alteration of the disturbance patterns o ...
... As floodplains are dependent on periodic disturbance, natural flooding frequency and duration should be maintained and construction of new dams, levees or other in-stream modifications should be avoided. Activities resulting in destabilization of the banks or alteration of the disturbance patterns o ...
the usefulness of ecological niche concepts in understanding plant
... grassland (Fargione and Tilman, 2005) and the noncoincidence of flushing in trees of tropical rain forest (Frankie et al., 1974). The regeneration niche describes that species within a community differ from one another during the regeneration phase of the life cycle which potentially contribute to c ...
... grassland (Fargione and Tilman, 2005) and the noncoincidence of flushing in trees of tropical rain forest (Frankie et al., 1974). The regeneration niche describes that species within a community differ from one another during the regeneration phase of the life cycle which potentially contribute to c ...
Distribution/abundance relations in a New Zealand grassland
... and its local abundance, i.e., widely occurring species tend to be more abundant locally when they do occur. Such relations have been documented over a wide range of taxa and spatial scales. There are five major hypotheses seeking to explain the relation: Random placement, Sampling error, Niche widt ...
... and its local abundance, i.e., widely occurring species tend to be more abundant locally when they do occur. Such relations have been documented over a wide range of taxa and spatial scales. There are five major hypotheses seeking to explain the relation: Random placement, Sampling error, Niche widt ...
Reconciliation ecology
Reconciliation ecology is the branch of ecology which studies ways to encourage biodiversity in human-dominated ecosystems. Michael Rosenzweig first articulated the concept in his book Win-Win Ecology, based on the theory that there is not enough area for all of earth’s biodiversity to be saved within designated nature preserves. Therefore, humans should increase biodiversity in human-dominated landscapes. By managing for biodiversity in ways that do not decrease human utility of the system, it is a ""win-win"" situation for both human use and native biodiversity. The science is based in the ecological foundation of human land-use trends and species-area relationships. It has many benefits beyond protection of biodiversity, and there are numerous examples of it around the globe. Aspects of reconciliation ecology can already be found in management legislation, but there are challenges in both public acceptance and ecological success of reconciliation attempts.