Protecting threatened species and ecological communities from
... are increasing. The State of the Environment 2011 reported that invasive species impacts on biodiversity were deteriorating. See Appendix 1 for a more detailed summary of the State of the Environment findings. The deteriorating trend is due to an accelerating rate of new invaders (such as myrtle rus ...
... are increasing. The State of the Environment 2011 reported that invasive species impacts on biodiversity were deteriorating. See Appendix 1 for a more detailed summary of the State of the Environment findings. The deteriorating trend is due to an accelerating rate of new invaders (such as myrtle rus ...
Keystone species and food webs - Philosophical Transactions of the
... roles): several species of high aesthetic or economic value are certainly important to be protected, but it might be admitted that they are protected for other reasons than maintaining ecosystem functioning. It is not easy to define ‘importance’ from an ecological perspective. A fairly widespread vi ...
... roles): several species of high aesthetic or economic value are certainly important to be protected, but it might be admitted that they are protected for other reasons than maintaining ecosystem functioning. It is not easy to define ‘importance’ from an ecological perspective. A fairly widespread vi ...
Biodiversity in tropical agroforests and the ecological role of ants
... reporting that in 109 (52% of the cases), there were lower herbivore population densities on plants in polycultures. Similarly, Dempster and Coaker (1974) reported at least 12 studies showing increased predator abundance in diversified systems reduced various insect pests. These results suggest the ...
... reporting that in 109 (52% of the cases), there were lower herbivore population densities on plants in polycultures. Similarly, Dempster and Coaker (1974) reported at least 12 studies showing increased predator abundance in diversified systems reduced various insect pests. These results suggest the ...
Are hybrid species more fit than ancestral parent species in the
... (iii) average reproductive output (seed number) for plants that flowered (from seedling plots). Based on a subsampling of seed heads as they matured over short interval in August, the number of seeds per seed head was assessed for each species in the ANO, ANN and DES habitats. To estimate the number ...
... (iii) average reproductive output (seed number) for plants that flowered (from seedling plots). Based on a subsampling of seed heads as they matured over short interval in August, the number of seeds per seed head was assessed for each species in the ANO, ANN and DES habitats. To estimate the number ...
Quenda - Department of Parks and Wildlife
... females produce more litters. In eastern Australia, gestation period is short (12-15 days). The young are weaned when about 60-70 days old. Oestrous can occur during lactation, a new litter can be born immediately after the pouch is vacated. The mortality rate of juveniles is usually high. ...
... females produce more litters. In eastern Australia, gestation period is short (12-15 days). The young are weaned when about 60-70 days old. Oestrous can occur during lactation, a new litter can be born immediately after the pouch is vacated. The mortality rate of juveniles is usually high. ...
How parasites divide resources: a test of the niche apportionment
... wrong, which would explain the lack of consistent results. Alternatively, general patterns may exist but not be apparent in analyses based on either the presence or abundance of parasite species. The biomass of different parasite species in a community is likely to be a better measure of their appor ...
... wrong, which would explain the lack of consistent results. Alternatively, general patterns may exist but not be apparent in analyses based on either the presence or abundance of parasite species. The biomass of different parasite species in a community is likely to be a better measure of their appor ...
Living in a landscape of fear: the impact of predation, resource
... distinguish between predator-specific predation risks in determining prey behaviour. In a novel approach, Willems and Hill (2009) showed that predator-specific landscapes of fear could be constructed on the basis of vervet monkey, Chlorocebus aethiops pygerythrus, alarm calls. Vervet monkeys’ predator ...
... distinguish between predator-specific predation risks in determining prey behaviour. In a novel approach, Willems and Hill (2009) showed that predator-specific landscapes of fear could be constructed on the basis of vervet monkey, Chlorocebus aethiops pygerythrus, alarm calls. Vervet monkeys’ predator ...
Riparian and Instream Native Flora and Fauna of the Goulburn Broken
... Some taxonomic groups such as fish require water throughout their life cycle; some may use aquatic areas for a specific stage of their life cycle such as birds or invertebrates, while others may require aquatic environments for resources such as food or as a corridor for movement. Many species of ri ...
... Some taxonomic groups such as fish require water throughout their life cycle; some may use aquatic areas for a specific stage of their life cycle such as birds or invertebrates, while others may require aquatic environments for resources such as food or as a corridor for movement. Many species of ri ...
Non-indigenous species
... Descriptor 2: i.e. species, subspecies or lower taxa introduced outside of their natural range (past or present) and outside of their natural dispersal potential. This includes any part, gamete or propagule of such species that might survive and subsequently reproduce. Their presence is due to inten ...
... Descriptor 2: i.e. species, subspecies or lower taxa introduced outside of their natural range (past or present) and outside of their natural dispersal potential. This includes any part, gamete or propagule of such species that might survive and subsequently reproduce. Their presence is due to inten ...
Stachowicz Annual Reviews - Virginia Institute of Marine Science
... Although early reviews lamented that comparable studies were rare in marine systems (e.g., Emmerson & Huxham 2002), this is no longer the case. Experimental manipulations of biodiversity in marine systems have both provided independent tests of generality of results from terrestrial systems, and exp ...
... Although early reviews lamented that comparable studies were rare in marine systems (e.g., Emmerson & Huxham 2002), this is no longer the case. Experimental manipulations of biodiversity in marine systems have both provided independent tests of generality of results from terrestrial systems, and exp ...
Abundance and Habitat Use of Nearctic Shorebirds in the Highland
... season), distributed in seven different plateaus, which represents just a small part of the available habitat for these species. For instance, Strobel Plateau holds over 1,000 lakes (Roesler et al. 2012), including the big Strobel Lake, with a large amount of potential habitat that was not covered i ...
... season), distributed in seven different plateaus, which represents just a small part of the available habitat for these species. For instance, Strobel Plateau holds over 1,000 lakes (Roesler et al. 2012), including the big Strobel Lake, with a large amount of potential habitat that was not covered i ...
Threats to Biodiversity - Wildlife Ecology and Conservation
... commensal species drove numerous aquatic and terrestrial species extinct. When highly organized societies began to settle and grow throughout the globe, the pace of transformation of terrestrial and aquatic habitats sharply increased, and our use of natural resources began to dramatically outstrip n ...
... commensal species drove numerous aquatic and terrestrial species extinct. When highly organized societies began to settle and grow throughout the globe, the pace of transformation of terrestrial and aquatic habitats sharply increased, and our use of natural resources began to dramatically outstrip n ...
Habitat Use by White-tailed Deer in a Tropical Forest
... in the diet could be associated with an increase in the foraging area, as greater distances are covered and the home-range is increased. In the dry period, low water and food availability is coupled with a decrease in cover to protect against climate and predators. The deer's strategy is to select, ...
... in the diet could be associated with an increase in the foraging area, as greater distances are covered and the home-range is increased. In the dry period, low water and food availability is coupled with a decrease in cover to protect against climate and predators. The deer's strategy is to select, ...
Seagrass and Seagrass Beds
... can extract nutrients (e.g. nitrogen) from the environment and make it Seagrasses don't just provide shelter for free-‐ swimming animals, but also are a habitat for non-‐ available to bigger animals. And moving organisms, such as these sea ...
... can extract nutrients (e.g. nitrogen) from the environment and make it Seagrasses don't just provide shelter for free-‐ swimming animals, but also are a habitat for non-‐ available to bigger animals. And moving organisms, such as these sea ...
Juan Fernández petrel
... soils and standing water, which made the use of the infra-red burrow scope impractical. It is important to note that this estimate represents a maximum possible occupancy given that activity at the entrance could be due to multiple causes: breeding adult petrels, nonbreeding petrels, cats, or rats. ...
... soils and standing water, which made the use of the infra-red burrow scope impractical. It is important to note that this estimate represents a maximum possible occupancy given that activity at the entrance could be due to multiple causes: breeding adult petrels, nonbreeding petrels, cats, or rats. ...
GARRY OAK ECOSYSTEMS RECOVERY TEAM
... such as fire, both natural and by First Nations, and grazing by wildlife. Almost all of this ecosystem type is now gone, as these were the first areas in the region that were cleared for agriculture and urban development. Many large Garry oak trees still remain, however most of these trees have lawn ...
... such as fire, both natural and by First Nations, and grazing by wildlife. Almost all of this ecosystem type is now gone, as these were the first areas in the region that were cleared for agriculture and urban development. Many large Garry oak trees still remain, however most of these trees have lawn ...
WGCP PIF Plan (2003 Revised Draft)
... northwest uplands rise to 90m (300 ft.). Bottomland hardwood forests were historically located in the floodplains of the Red, Sabine, and Ouachita Rivers. Sweetgum (Liquidambar styraciflua) is currently the dominant in both the bottomland hardwood and in the oak/hickory forest remaining in the WGCP ...
... northwest uplands rise to 90m (300 ft.). Bottomland hardwood forests were historically located in the floodplains of the Red, Sabine, and Ouachita Rivers. Sweetgum (Liquidambar styraciflua) is currently the dominant in both the bottomland hardwood and in the oak/hickory forest remaining in the WGCP ...
Recruitment Processes and Species Coexistence
... Forest communities have enormous biomass and pronounced vertical stratification, particularly in climax forests consisting of different cohorts. Such stand structure is clear for forests, while it is not so obvious in other plant communities (Hara, 1994). The attributes such as size structure and sp ...
... Forest communities have enormous biomass and pronounced vertical stratification, particularly in climax forests consisting of different cohorts. Such stand structure is clear for forests, while it is not so obvious in other plant communities (Hara, 1994). The attributes such as size structure and sp ...
The Southwest Australia Ecoregion - WWF
... It is a large Ecoregion. Covering approximately 48.9 million hectares (489,944 km2), it is roughly triangular in shape, stretching between Shark Bay in the northwest to Esperance in the southeast, with a narrow strip along the southeastern coast to the border between Western Australia and South Aus ...
... It is a large Ecoregion. Covering approximately 48.9 million hectares (489,944 km2), it is roughly triangular in shape, stretching between Shark Bay in the northwest to Esperance in the southeast, with a narrow strip along the southeastern coast to the border between Western Australia and South Aus ...
Reptiles - eolss.net
... Because of their relatively secretive habits, the majority of reptiles are not frequently encountered by humans, who generally remain neutral or positive in their attitude to all but large crocodilians and snakes. Yet their diversity and biomass would imply that reptiles play an important role in ma ...
... Because of their relatively secretive habits, the majority of reptiles are not frequently encountered by humans, who generally remain neutral or positive in their attitude to all but large crocodilians and snakes. Yet their diversity and biomass would imply that reptiles play an important role in ma ...
Invasions: the trail behind, the path ahead, and a test
... et al. 2008). The prevalence of all these factors and their combined effects makes rapid evolution likely in introduced species. Buswell, Moles & Hartley (2011) found that 70% of 23 plant species introduced to Australia had undergone significant morphological change within c. 100 years. The magnitude ...
... et al. 2008). The prevalence of all these factors and their combined effects makes rapid evolution likely in introduced species. Buswell, Moles & Hartley (2011) found that 70% of 23 plant species introduced to Australia had undergone significant morphological change within c. 100 years. The magnitude ...
The Boreal biogeographical region
... The area treated in this chapter is the Boreal biogeographical region as defined by the European Commission and the Council of Europe for evaluation and reporting on nature conservation. In the south it borders on the Continental biogeographical region. It covers around ¼ of Europe's territory and i ...
... The area treated in this chapter is the Boreal biogeographical region as defined by the European Commission and the Council of Europe for evaluation and reporting on nature conservation. In the south it borders on the Continental biogeographical region. It covers around ¼ of Europe's territory and i ...
Exam #1 Practice Questions
... competitively excluded from the lower intertidal zone by B. balanoides (another species of barnacle), but C. stellatus has no effect on the distribution of B. balanoides. What could be concluded about the two species’ niches? A) The fundamental and realized niches of B. balanoides and C. stellat ...
... competitively excluded from the lower intertidal zone by B. balanoides (another species of barnacle), but C. stellatus has no effect on the distribution of B. balanoides. What could be concluded about the two species’ niches? A) The fundamental and realized niches of B. balanoides and C. stellat ...
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.