Danger to native species N4/5
... surviving tough winter conditions. On top of this, competition is increased by their ability to produce more young and live at higher densities. However, rivalry between the species is not the only problem. Grey squirrels are carriers of the Squirrel pox virus, which the reds have no immunity to. It ...
... surviving tough winter conditions. On top of this, competition is increased by their ability to produce more young and live at higher densities. However, rivalry between the species is not the only problem. Grey squirrels are carriers of the Squirrel pox virus, which the reds have no immunity to. It ...
Conservation on reserve
... “Our study shows that existing protected areas are not doing their job effectively, leaving many species in a perilous position,” says Oscar Venter. “This is because protected areas are often preferentially established in locations that are remote or have little agricultural value, failing to protec ...
... “Our study shows that existing protected areas are not doing their job effectively, leaving many species in a perilous position,” says Oscar Venter. “This is because protected areas are often preferentially established in locations that are remote or have little agricultural value, failing to protec ...
Reprint (497KB PDF) - Michigan State University
... However, recent work demonstrates that dispersal can drastically alter the interplay between ecological and evolutionary dynamics, often in unexpected ways. We argue that a dispersal-centered synthesis of metacommunity ecology and evolution is necessary to make further progress in this important are ...
... However, recent work demonstrates that dispersal can drastically alter the interplay between ecological and evolutionary dynamics, often in unexpected ways. We argue that a dispersal-centered synthesis of metacommunity ecology and evolution is necessary to make further progress in this important are ...
Lafayette Parish School System 2013
... Unit Description and Student Understandings: In this unit, activities will focus on biomes and their characteristics; distinguishing among ecosystems, communities, populations, species, habitats, and niches; symbiotic relationships; and the impact of population changes on ecosystems. In this unit, a ...
... Unit Description and Student Understandings: In this unit, activities will focus on biomes and their characteristics; distinguishing among ecosystems, communities, populations, species, habitats, and niches; symbiotic relationships; and the impact of population changes on ecosystems. In this unit, a ...
BIOS 3010: Ecology 2. The effect of grazing herbivores: 3. The effect
... • e.g. malaria and bird pox in Hawaii: – may have exterminated 50% of the endemic bird species. ...
... • e.g. malaria and bird pox in Hawaii: – may have exterminated 50% of the endemic bird species. ...
Tree species richness promotes productivity in temperate forests
... 1998a,b). Many experiments on the relationship between biodiversity and ecosystem functioning (BEF) were carried out in the last two decades (Hector et al. 1999; Hooper et al. 2005), usually showing that plant productivity increases with increasing species richness, often levelling off at high richn ...
... 1998a,b). Many experiments on the relationship between biodiversity and ecosystem functioning (BEF) were carried out in the last two decades (Hector et al. 1999; Hooper et al. 2005), usually showing that plant productivity increases with increasing species richness, often levelling off at high richn ...
Habitat destruction and metacommunity size in pen
... negative effects on diversity. We can understand the effects of habitat destruction on diversity by considering how local diversity changes with succession, habitat area and fragmentation (Mouquet et al. 2003). New habitats are expected to gain species through time up to some asymptote, with larger ...
... negative effects on diversity. We can understand the effects of habitat destruction on diversity by considering how local diversity changes with succession, habitat area and fragmentation (Mouquet et al. 2003). New habitats are expected to gain species through time up to some asymptote, with larger ...
Community Ecology (Bio 3TT3) - McMaster Department of Biology
... potential one. Source-sink dynamics permits species existence outside suitable patches (final rate of increase less than 1). Dispersal limitation emphasizes the possibility that species is absent from suitable sites because it is unable to disperse to them after they formed or after species disappea ...
... potential one. Source-sink dynamics permits species existence outside suitable patches (final rate of increase less than 1). Dispersal limitation emphasizes the possibility that species is absent from suitable sites because it is unable to disperse to them after they formed or after species disappea ...
Succession
... of a lot of wind-dispersed seeds to easily reach isolated areas Rapid germination of seeds The ability to photosynthesise The ability to fix nitrogen from the atmosphere Tolerance to extreme conditions ...
... of a lot of wind-dispersed seeds to easily reach isolated areas Rapid germination of seeds The ability to photosynthesise The ability to fix nitrogen from the atmosphere Tolerance to extreme conditions ...
6 Biodiversity and Ecosystem Functioning in Grasslands
... is they select for a similar set of characteristics. If fire was an important force in dry areas, it effects would also be complementary. In humid regions, drought is a less frequent control on ecosystem structure and function than in dry areas. One result of this is that the structure of plant comm ...
... is they select for a similar set of characteristics. If fire was an important force in dry areas, it effects would also be complementary. In humid regions, drought is a less frequent control on ecosystem structure and function than in dry areas. One result of this is that the structure of plant comm ...
Economic growth, biodiversity loss and conservation effort
... (CITES) was first signed in 1973 by 21 states and presently has been adopted by 127 states. During this time, CITES has been viewed as the ‘flagship of the flora and fauna preservation treaties’ (Lanchberry, 1998, p. 69). Species covered by the convention are listed in one of three Appendices A, B a ...
... (CITES) was first signed in 1973 by 21 states and presently has been adopted by 127 states. During this time, CITES has been viewed as the ‘flagship of the flora and fauna preservation treaties’ (Lanchberry, 1998, p. 69). Species covered by the convention are listed in one of three Appendices A, B a ...
Primary succession
... where temperature is relatively warm and constant. Most areas receive 200+ cm annual rainfall, and some receive in excess of 500 cm. The soil allows high levels of leaching, thus most nutrients are tied up in biomass. Tropical rainforests have a multi-layered canopy. • Epiphytic plants ...
... where temperature is relatively warm and constant. Most areas receive 200+ cm annual rainfall, and some receive in excess of 500 cm. The soil allows high levels of leaching, thus most nutrients are tied up in biomass. Tropical rainforests have a multi-layered canopy. • Epiphytic plants ...
Systematic studies of the Syrphidae (Flower Flies)
... 6000 described species worldwide and almost 900 in North America. Their ecological roles are diverse and they can be important biologically and economically as pollinators and biological control agents. There is much literature on the family but few regional syntheses exist. In general, our knowledg ...
... 6000 described species worldwide and almost 900 in North America. Their ecological roles are diverse and they can be important biologically and economically as pollinators and biological control agents. There is much literature on the family but few regional syntheses exist. In general, our knowledg ...
Geospiza pauper, Medium Tree-finch
... Threats (see Appendix for additional information) The most significant threat is from the introduced ectoparasite Philornis downsi, which occurs in finch nests on Floreana (Wiedenfeld et al. 2007), and is responsible for 41% of nestling mortality (O'Connor et al. 2010a, S. Kleindorfer in litt. 2008) ...
... Threats (see Appendix for additional information) The most significant threat is from the introduced ectoparasite Philornis downsi, which occurs in finch nests on Floreana (Wiedenfeld et al. 2007), and is responsible for 41% of nestling mortality (O'Connor et al. 2010a, S. Kleindorfer in litt. 2008) ...
Rangeland Communities: Structure, Function, And
... Robert MacArthur and colleagues are often attributed with developing the foundations of life-history evolution. They predicted that species vary in traits associated with either r- or K-selection. The terms “r” and “K” refer to intrinsic rate of population growth (i.e. rate of increase) and carrying ...
... Robert MacArthur and colleagues are often attributed with developing the foundations of life-history evolution. They predicted that species vary in traits associated with either r- or K-selection. The terms “r” and “K” refer to intrinsic rate of population growth (i.e. rate of increase) and carrying ...
Reverse latitudinal trends in species richness of pitcher-plant food webs
... richness of macroinvertebrates (primarily dipterans and mites) was not significantly related to latitude, whereas richness of protozoa and bacteria both increased with latitude. In an observational study like this, it is difficult to determine as to why species richness generally increased with lati ...
... richness of macroinvertebrates (primarily dipterans and mites) was not significantly related to latitude, whereas richness of protozoa and bacteria both increased with latitude. In an observational study like this, it is difficult to determine as to why species richness generally increased with lati ...
Page of 12 A2 U4 Biology Notes – HM Ecology 5.10 – 5.12
... processes of ecological investigation, where each stage is clearly defined and purposeful: A study on ecology of a habitat: An exam question may ask you to describe a study to investigate ecology (for 4-8 marks), in which case you can efficiently touch upon the main points: 1) Named organism and nam ...
... processes of ecological investigation, where each stage is clearly defined and purposeful: A study on ecology of a habitat: An exam question may ask you to describe a study to investigate ecology (for 4-8 marks), in which case you can efficiently touch upon the main points: 1) Named organism and nam ...
Geospiza heliobates, Mangrove Finch
... and captive trials have used Woodpecker Finch in order to train personnel and develop husbandry techniques that were then transferred to Mangrove Finch (G. Young and B. Fessl in litt. 2008). The first trial translocation took place in May 2010 when nine wild-trapped birds were taken to Bahia Urbina ...
... and captive trials have used Woodpecker Finch in order to train personnel and develop husbandry techniques that were then transferred to Mangrove Finch (G. Young and B. Fessl in litt. 2008). The first trial translocation took place in May 2010 when nine wild-trapped birds were taken to Bahia Urbina ...
AP/IB Environmental Science
... 2. Explain the term green architecture. 3. Define environmental science. 4. What is environmental sustainability, and why is it important? 5. What are endocrine disrupters? List three examples of chemicals that fall into this group. 6. Compare and contrast synergism and antagonism. 7. Explain the te ...
... 2. Explain the term green architecture. 3. Define environmental science. 4. What is environmental sustainability, and why is it important? 5. What are endocrine disrupters? List three examples of chemicals that fall into this group. 6. Compare and contrast synergism and antagonism. 7. Explain the te ...
Unit 3 Sustainable Ecosystems
... The islanders prospered due to these advantages, and a reflection of this is the religion which sprouted in their leisure, which had at its centerpiece the giant moai, or heads, that are the island's most distinctive feature today. These moai, which the island is littered with, are supposed to have ...
... The islanders prospered due to these advantages, and a reflection of this is the religion which sprouted in their leisure, which had at its centerpiece the giant moai, or heads, that are the island's most distinctive feature today. These moai, which the island is littered with, are supposed to have ...
Lesson Overview
... Experimentation Experiments can be used to test hypotheses. An ecologist may set up an artificial environment in a laboratory or greenhouse, or carefully alter conditions in selected parts of natural ecosystems. ...
... Experimentation Experiments can be used to test hypotheses. An ecologist may set up an artificial environment in a laboratory or greenhouse, or carefully alter conditions in selected parts of natural ecosystems. ...
Anthropogenic impacts on tropical forest biodiversity
... how species are organized in networks, and the vulnerability of these networks to anthropogenic impacts. I highlight selected empirical studies that either take a network approach or consider cascading trophic effects. (a) Networks of interacting species Species are linked in networks to other speci ...
... how species are organized in networks, and the vulnerability of these networks to anthropogenic impacts. I highlight selected empirical studies that either take a network approach or consider cascading trophic effects. (a) Networks of interacting species Species are linked in networks to other speci ...
Definitions of Biodiversity and Measures of Its Value
... the continuing presence of wild species in a park area. The diversity he enjoys might be changed by a species reintroduction program, such as the controversial reintroduction of wolves into Yellowstone National Park. Note that in this case also, the presence of some population of one species will af ...
... the continuing presence of wild species in a park area. The diversity he enjoys might be changed by a species reintroduction program, such as the controversial reintroduction of wolves into Yellowstone National Park. Note that in this case also, the presence of some population of one species will af ...
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.