fires, ecological effects of
... and their carcasses provide a food source to scavenging birds and other creatures in the first few days after a burn. The threatened bald ibis of South Africa makes extensive use of recently burnt grasslands, as does the endangered whooping crane in its Texan winter feeding grounds. The indirect effe ...
... and their carcasses provide a food source to scavenging birds and other creatures in the first few days after a burn. The threatened bald ibis of South Africa makes extensive use of recently burnt grasslands, as does the endangered whooping crane in its Texan winter feeding grounds. The indirect effe ...
Impacts of feral horses on a desert environment | SpringerLink
... community structure [12]. Microbiotic soil crusts serve important functions in soil stabilization, nitrogen fixation, and water conservation. These crusts are concentrated in the top 1-4 mm of soil and are particularly sensitive to trampling [11]. Erosion, soil compaction, and vegetation loss from t ...
... community structure [12]. Microbiotic soil crusts serve important functions in soil stabilization, nitrogen fixation, and water conservation. These crusts are concentrated in the top 1-4 mm of soil and are particularly sensitive to trampling [11]. Erosion, soil compaction, and vegetation loss from t ...
Contrasting latitudinal patterns of life‐history divergence in two
... Martin 2002). A subset of these nests was videotaped more than once throughout the incubation stage to determine changes in nest attentiveness across the incubation stage. Nest attentiveness is defined here as the percentage of total observation time an adult spent on the nest during incubation. Vide ...
... Martin 2002). A subset of these nests was videotaped more than once throughout the incubation stage to determine changes in nest attentiveness across the incubation stage. Nest attentiveness is defined here as the percentage of total observation time an adult spent on the nest during incubation. Vide ...
Cyanopsitta Magazine.. - Loro Parque Fundación
... degraded forest land that could be restored. Forests are the home of many species of parrots, and during Forests 2011 the Loro Parque Fundación will be supporting projects which protect threatened species of parrots, and safeguard and restore their forest and woodland habitats. These projects will b ...
... degraded forest land that could be restored. Forests are the home of many species of parrots, and during Forests 2011 the Loro Parque Fundación will be supporting projects which protect threatened species of parrots, and safeguard and restore their forest and woodland habitats. These projects will b ...
Please send responses or direct questions to:Andrew J. Wall
... genetic data on interisland movements). On Rota, Mariana fruit bat use primary and secondary limestone forest for roosting and foraging; (Glass and Taisacan 1988). Effective control of unlawful hunting throughout the archipelago through outreach, education, and enforcement measures is required, espe ...
... genetic data on interisland movements). On Rota, Mariana fruit bat use primary and secondary limestone forest for roosting and foraging; (Glass and Taisacan 1988). Effective control of unlawful hunting throughout the archipelago through outreach, education, and enforcement measures is required, espe ...
Propagule supply controls grazer community structure and primary
... terrestrial plant communities suggest that propagule limitation is widespread and many communities are naturally unsaturated (10–13), although most relevant research has been focused at the population level (14, 15). Populations below carrying capacity can respond to increased propagule supply with ...
... terrestrial plant communities suggest that propagule limitation is widespread and many communities are naturally unsaturated (10–13), although most relevant research has been focused at the population level (14, 15). Populations below carrying capacity can respond to increased propagule supply with ...
The effects of chronic moderate noise on animal behavior and
... “Intermittent road noise was associated with lower relative lek attendance than continuous drilling noise, in spite of the overall higher mean noise levels and greater masking potential at leks treated with drilling noise.” ...
... “Intermittent road noise was associated with lower relative lek attendance than continuous drilling noise, in spite of the overall higher mean noise levels and greater masking potential at leks treated with drilling noise.” ...
Identifying Critical Areas for Conservation: Biodiversity and Climate
... Species Richness. The number of unique species in a place is known as species richness. In order to obtain this type of biodiversity map, we have overlain thousands of species habitat range maps (distribution data). This compilation of spatial data is the result of aggregating information about all ...
... Species Richness. The number of unique species in a place is known as species richness. In order to obtain this type of biodiversity map, we have overlain thousands of species habitat range maps (distribution data). This compilation of spatial data is the result of aggregating information about all ...
A food web perspective on large herbivore community limitation
... and Mills 2008). This assertion, however, appears highly unlikely given the high predation levels estimated here. Our results also suggest that the relative importance of top-down and bottom-up processes may vary greatly between systems, even though species composition was very similar, suggesting a ...
... and Mills 2008). This assertion, however, appears highly unlikely given the high predation levels estimated here. Our results also suggest that the relative importance of top-down and bottom-up processes may vary greatly between systems, even though species composition was very similar, suggesting a ...
Investigations of species richness effects on ecosystem functioning
... potentially large, negative effects of species loss on the function of ecosystems around the world. In the beginning of the 1990’s a more objective criterion for species conservation was introduced. If one could measure the effect of losing species by investigating any change in the function of ecos ...
... potentially large, negative effects of species loss on the function of ecosystems around the world. In the beginning of the 1990’s a more objective criterion for species conservation was introduced. If one could measure the effect of losing species by investigating any change in the function of ecos ...
Biology Slide 1 of 39 End Show
... Components of an ecosystem can be changed by natural events, such as fires. When the disturbance is over, community interactions tend to restore the ecosystem to its original condition through secondary succession. ...
... Components of an ecosystem can be changed by natural events, such as fires. When the disturbance is over, community interactions tend to restore the ecosystem to its original condition through secondary succession. ...
1.2 - Biology Junction
... Components of an ecosystem can be changed by natural events, such as fires. When the disturbance is over, community interactions tend to restore the ecosystem to its original condition through secondary succession. ...
... Components of an ecosystem can be changed by natural events, such as fires. When the disturbance is over, community interactions tend to restore the ecosystem to its original condition through secondary succession. ...
Comparing impacts of invasive plants and animals using a
... 1.3 Impacts on species through competition Impacts may concern single species, a group or a community, e.g. by competition for nutrients, food, water, space or other resources, including competition for pollinators which might affect plant fecundity (i.e. fruit or seed set). Often, the alien species ...
... 1.3 Impacts on species through competition Impacts may concern single species, a group or a community, e.g. by competition for nutrients, food, water, space or other resources, including competition for pollinators which might affect plant fecundity (i.e. fruit or seed set). Often, the alien species ...
OFFICIAL TESTER PROGRAM HERE!
... Society of London. In addition, Dr. Schluter has served as President and Vice President of several scientific societies, including the American Society of Naturalists and the Society for the Study of Evolution. Dr. Schluter was a postdoctoral researcher at the University of California, Davis and the ...
... Society of London. In addition, Dr. Schluter has served as President and Vice President of several scientific societies, including the American Society of Naturalists and the Society for the Study of Evolution. Dr. Schluter was a postdoctoral researcher at the University of California, Davis and the ...
FINANCING PLAN (IN US$): - Global Environment Facility
... administrative units) is rich in global biodiversity. These mountain complexes provide connectivity for high altitude fauna, acting as a bridge for the biota of Afghanistan, China, and India. Khunjerab National Park in Karakorams is considered a high-altitude biodiversity hotspot (WWF 2009). Norther ...
... administrative units) is rich in global biodiversity. These mountain complexes provide connectivity for high altitude fauna, acting as a bridge for the biota of Afghanistan, China, and India. Khunjerab National Park in Karakorams is considered a high-altitude biodiversity hotspot (WWF 2009). Norther ...
amphibian and reptile survey report and management plan for
... the channel sustains intermittent ponds throughout the summer. However, the creek will periodically flood following high-intensity spring and summer rainstorms. These rains maintain the seasonal ponds located in the creek’s main channel. A base-wide jurisdictional wetlands determination by the USACE ...
... the channel sustains intermittent ponds throughout the summer. However, the creek will periodically flood following high-intensity spring and summer rainstorms. These rains maintain the seasonal ponds located in the creek’s main channel. A base-wide jurisdictional wetlands determination by the USACE ...
Considering ecological dynamics in resource selection functions
... invoke the potential for changes in abundance and shifts in distribution of territorial songbirds of the boreal forest to explain why their multiannual, mean RSF poorly predicted some annual functions. And recently, Mobæk et al. (2009) included density explicitly in their RSF models. However, acknow ...
... invoke the potential for changes in abundance and shifts in distribution of territorial songbirds of the boreal forest to explain why their multiannual, mean RSF poorly predicted some annual functions. And recently, Mobæk et al. (2009) included density explicitly in their RSF models. However, acknow ...
metacommunity influences on community richness at multiple spatial
... Sorenson index or between-community contrasts within a metacommunity, at day 50. For example, highly connected communities should be more similar than less connected communities. The similarity values were analyzed using a three-way ANOVA with dispersal rate, dispersal pathway, and initial beta as f ...
... Sorenson index or between-community contrasts within a metacommunity, at day 50. For example, highly connected communities should be more similar than less connected communities. The similarity values were analyzed using a three-way ANOVA with dispersal rate, dispersal pathway, and initial beta as f ...
Considering ecological dynamics in resource selection functions
... invoke the potential for changes in abundance and shifts in distribution of territorial songbirds of the boreal forest to explain why their multiannual, mean RSF poorly predicted some annual functions. And recently, Mobæk et al. (2009) included density explicitly in their RSF models. However, acknow ...
... invoke the potential for changes in abundance and shifts in distribution of territorial songbirds of the boreal forest to explain why their multiannual, mean RSF poorly predicted some annual functions. And recently, Mobæk et al. (2009) included density explicitly in their RSF models. However, acknow ...
Foraging Behavior and Success of Herons and Egrets in Natural
... precipitation, and the area and shape of the estuary (Gordon et al. 1989). Plant species composition in these habitats is influenced primarily by salinity and length and frequency of inundation (Gordon et al. 1989). In an attempt to restore wetland habitat, artificial or mitigated wetlands have been ...
... precipitation, and the area and shape of the estuary (Gordon et al. 1989). Plant species composition in these habitats is influenced primarily by salinity and length and frequency of inundation (Gordon et al. 1989). In an attempt to restore wetland habitat, artificial or mitigated wetlands have been ...
School brochure 2017
... in-school coordinator to ensure the best quality projects can be completed. Qualifications: University Award, CoPE Level 3, Community, Action and Service (CAS), University course credit, PADI OW can be available to students. Gaining a hands on experience of course syllabuses: The expeditions provide ...
... in-school coordinator to ensure the best quality projects can be completed. Qualifications: University Award, CoPE Level 3, Community, Action and Service (CAS), University course credit, PADI OW can be available to students. Gaining a hands on experience of course syllabuses: The expeditions provide ...
Effects of predation risk on group size, vigilance
... into safer habitats and spent less time foraging in response to predation risk from owls (Kotler et al. 1991). Similar experiments with many invertebrates and small vertebrates show that antipredator responses can carry foraging costs that affect fitness (Peckarsky et al. 1993; Relyea and Werner 19 ...
... into safer habitats and spent less time foraging in response to predation risk from owls (Kotler et al. 1991). Similar experiments with many invertebrates and small vertebrates show that antipredator responses can carry foraging costs that affect fitness (Peckarsky et al. 1993; Relyea and Werner 19 ...
Herbivory on woody plants and induced responses in two similar
... response (Hjältén et al 1993). In this study, the accumulated effects of many years of browsing on physical traits of plants are considered, which means that the specific browsing pattern during the most recent seasons is less important. Despite the fact that spines and thorns can be easily manipula ...
... response (Hjältén et al 1993). In this study, the accumulated effects of many years of browsing on physical traits of plants are considered, which means that the specific browsing pattern during the most recent seasons is less important. Despite the fact that spines and thorns can be easily manipula ...
Chapter 2
... 4.5 Alteration in environment by litter ...................................................................... 29 4.6 Leachates from litter............................................................................................ 30 4.7 Control of nutrient cycling ................................. ...
... 4.5 Alteration in environment by litter ...................................................................... 29 4.6 Leachates from litter............................................................................................ 30 4.7 Control of nutrient cycling ................................. ...
Evaluating the role of ecological isolation in maintaining the species
... planting three males and three females in a 1 m2 area, simulating a small founder population as might naturally occur. In previous studies in the area, Goulson and Jerrim (1997) mapped local populations of Silene and 27% of populations recorded consisted of 6 or fewer plants, and so this population ...
... planting three males and three females in a 1 m2 area, simulating a small founder population as might naturally occur. In previous studies in the area, Goulson and Jerrim (1997) mapped local populations of Silene and 27% of populations recorded consisted of 6 or fewer plants, and so this population ...
Biological Dynamics of Forest Fragments Project
The Biological Dynamics of Forest Fragments Project, originally called the Minimum Critical Size of Ecosystems Project is a large-scale ecological experiment looking at the effects of habitat fragmentation on tropical rainforest; it is one of the most expensive biology experiments ever run. The experiment, which was established in 1979 is located near Manaus, in the Brazilian Amazon. The project is jointly managed by the Smithsonian Institution and INPA, the Brazilian Institute for Research in the Amazon.The project was initiated in 1979 by Thomas Lovejoy to investigate the SLOSS debate. Initially named the Minimum Critical Size of Ecosystems Project, the project created forest fragments of sizes 1 hectare (2 acres), 10 hectares (25 acres), and 100 hectares (247 acres). Data were collected prior to the creation of the fragments and studies of the effects of fragmentation now exceed 25 years.As of October 2010 562 publications and 143 graduate dissertations and theses had emerged from the project.