Late Quaternary Extinctions: State of the Debate
... rabbit (Aztlanolagus). At the species level, the extinction was total for mammals larger than 1000 kg, greater than 50% for size classes between 1000 and 32 kg, and 20% for those between 32 and 10 kg (Figure 1, Supplemental Table 2). There were also cases of pseudoextinction at the species level. Fo ...
... rabbit (Aztlanolagus). At the species level, the extinction was total for mammals larger than 1000 kg, greater than 50% for size classes between 1000 and 32 kg, and 20% for those between 32 and 10 kg (Figure 1, Supplemental Table 2). There were also cases of pseudoextinction at the species level. Fo ...
Manchester Biodiversity Strategy
... of nature: a biodiversity strategy for England’. The report suggests that wild bird populations in the UK have begun to stabilise after 20 years’ decline, with the population status of bird species 13% higher than it was in 1970. An example of this can be seen from the town and garden bird populatio ...
... of nature: a biodiversity strategy for England’. The report suggests that wild bird populations in the UK have begun to stabilise after 20 years’ decline, with the population status of bird species 13% higher than it was in 1970. An example of this can be seen from the town and garden bird populatio ...
Feedback Theory and Darwinian Evolution
... signal (an excess of prey). Other parameters, such as sex ratios, are also controlled by powerful negative feedback loops. Notice that, in these cases, the organisms that are adapting under natural selection are themselves the critical or controlling elements of the environment to which they are ada ...
... signal (an excess of prey). Other parameters, such as sex ratios, are also controlled by powerful negative feedback loops. Notice that, in these cases, the organisms that are adapting under natural selection are themselves the critical or controlling elements of the environment to which they are ada ...
Taxonomic and functional approaches of trophic interactions
... Given the key role of large herbivores on species and functional plant diversity, we aimed at better understanding the relationship between herbivory and plant communities mainly at a finescale, in order to reconcile objectives of population management and plant conservation. For this purpose, we us ...
... Given the key role of large herbivores on species and functional plant diversity, we aimed at better understanding the relationship between herbivory and plant communities mainly at a finescale, in order to reconcile objectives of population management and plant conservation. For this purpose, we us ...
moreno WR06142.qxd - Federación Galega de Caza
... may cause a shift in rabbit breeding patterns, encouraging further studies to investigate this possibility. In contrast, we have shown that after the outbreak of RHD, rabbit population dynamics maintained the same seasonal pattern, with peak values in June owing to reproductive recruitment, and mini ...
... may cause a shift in rabbit breeding patterns, encouraging further studies to investigate this possibility. In contrast, we have shown that after the outbreak of RHD, rabbit population dynamics maintained the same seasonal pattern, with peak values in June owing to reproductive recruitment, and mini ...
Heteromorphic Life Histories of Certain Marine Algae as Adaptations
... established, stable life cycles involving several ecologically distinct stages. T o these we add certain heteromorphic algae, which by Istock's (1967) criteria should be particularly evolutionarily unstable: the stages are often found under different growing conditions, and some, rather than being l ...
... established, stable life cycles involving several ecologically distinct stages. T o these we add certain heteromorphic algae, which by Istock's (1967) criteria should be particularly evolutionarily unstable: the stages are often found under different growing conditions, and some, rather than being l ...
b 2 - Videolectures
... Species coexistence and diversity are affected by global pattern transitions. Coexistence appears as a result of bands spots ...
... Species coexistence and diversity are affected by global pattern transitions. Coexistence appears as a result of bands spots ...
1. Invasive species and their impacts
... competitors, parasites, and pathogens) in the area they invade. Often there are no predatory species in the new area that are able to consume the invasive species. Further, pathogens are often important causes of death and population regulation, which would normally help control population growth. U ...
... competitors, parasites, and pathogens) in the area they invade. Often there are no predatory species in the new area that are able to consume the invasive species. Further, pathogens are often important causes of death and population regulation, which would normally help control population growth. U ...
2016: Invasive Species - Manitoba Forestry Association
... competitors, parasites, and pathogens) in the area they invade. Often there are no predatory species in the new area that are able to consume the invasive species. Further, pathogens are often important causes of death and population regulation, which would normally help control population growth. U ...
... competitors, parasites, and pathogens) in the area they invade. Often there are no predatory species in the new area that are able to consume the invasive species. Further, pathogens are often important causes of death and population regulation, which would normally help control population growth. U ...
The feeding ecology of the aardvark Orycteropus afer
... animal, has been little studied. In southern Africa aardvarks feed primarily on ants, but termites also constitute an important part of their diet (Smithers, 1971; Smithers & Wilson, 1979; Melton, 1976; Melton & Daniels, 1986; Willis et al., 1992). Most accounts of aardvarks’ diet are based on limit ...
... animal, has been little studied. In southern Africa aardvarks feed primarily on ants, but termites also constitute an important part of their diet (Smithers, 1971; Smithers & Wilson, 1979; Melton, 1976; Melton & Daniels, 1986; Willis et al., 1992). Most accounts of aardvarks’ diet are based on limit ...
Habitat selection by feral cats and dingoes in a
... feral cats (Konecny 1987; Alterio et al. 1998), no study has examined the possible reasons underlying these phenomena. Habitat use in animals has been much studied over the past 75 years (Rosenzweig 1991). From early on it was recognized that within some species, individuals actually choose which ha ...
... feral cats (Konecny 1987; Alterio et al. 1998), no study has examined the possible reasons underlying these phenomena. Habitat use in animals has been much studied over the past 75 years (Rosenzweig 1991). From early on it was recognized that within some species, individuals actually choose which ha ...
Chapter 7 The Diet of the Powerful Owl - DRO
... Previous dietary studies of the powerful owl suggest that it forages opportunistically in that it selects the largest available but manageable prey which is usually mammalian. The powerful owl is dependent on several staple foods, the most common being medium and large (100-1200g), hollow-dependent, ...
... Previous dietary studies of the powerful owl suggest that it forages opportunistically in that it selects the largest available but manageable prey which is usually mammalian. The powerful owl is dependent on several staple foods, the most common being medium and large (100-1200g), hollow-dependent, ...
How can we apply theories of habitat selection to wildlife
... management of wildlife. Many of the solutions involve the use of habitat isodars, graphs of densities in pairs of habitats such that expected fitness is the same in both. For single species, isodars reflect differences in habitat quality, and specify the conditions when population density will, or w ...
... management of wildlife. Many of the solutions involve the use of habitat isodars, graphs of densities in pairs of habitats such that expected fitness is the same in both. For single species, isodars reflect differences in habitat quality, and specify the conditions when population density will, or w ...
Significant Wildlife Habitat Criteria Schedules For Ecoregion 3E
... This Schedule is designed to provide the recommended criteria for identifying Significant Wildlife Habitat (SWH) within Ecoregion 3E. Tables 1.1 through 1.4 within the Schedules provide guidance for SWH designation for the four categories of SWH outlined in the Significant Wildlife Habitat Technical ...
... This Schedule is designed to provide the recommended criteria for identifying Significant Wildlife Habitat (SWH) within Ecoregion 3E. Tables 1.1 through 1.4 within the Schedules provide guidance for SWH designation for the four categories of SWH outlined in the Significant Wildlife Habitat Technical ...
Have coral snake mimics diversified more than non-mimics?
... bioRxiv preprint first posted online Mar. 5, 2016; doi: http://dx.doi.org/10.1101/042440. The copyright holder for this preprint (which was not peer-reviewed) is the author/funder. It is made available under a CC-BY-ND 4.0 International license. ...
... bioRxiv preprint first posted online Mar. 5, 2016; doi: http://dx.doi.org/10.1101/042440. The copyright holder for this preprint (which was not peer-reviewed) is the author/funder. It is made available under a CC-BY-ND 4.0 International license. ...
University of Groningen Plasticity in daily timing of behavior van der
... temporal niche in which animals display either nocturnal or diurnal phenotypes. However, the temporal programs under natural conditions, where environmental factors are more variable and the behavioral repertoire of an animal has a wider range, are likely more complex and more plastic. A classic exa ...
... temporal niche in which animals display either nocturnal or diurnal phenotypes. However, the temporal programs under natural conditions, where environmental factors are more variable and the behavioral repertoire of an animal has a wider range, are likely more complex and more plastic. A classic exa ...
FAUNA SURVEY OF BALNARRING PRIMARY SCHOOL
... and adjacent lake. The study site is approximately 12 hectares in size and habitat includes Grassy Woodlands, Swamp Scrub, wetlands, lake, drainage line and school buildings. The property is also a part of the foothill to coast bio-link including Merricks Creek. Aims and Objectives The main purpose ...
... and adjacent lake. The study site is approximately 12 hectares in size and habitat includes Grassy Woodlands, Swamp Scrub, wetlands, lake, drainage line and school buildings. The property is also a part of the foothill to coast bio-link including Merricks Creek. Aims and Objectives The main purpose ...
Lion-tailed macaque interactions with non-primates
... wasteful feeders with large group sizes inhabiting open habitats3. However, it has been observed that both body size and group size do not have any effect on primate– non-primate interactions3. The nature of primate interactions could be largely determined by species-specific temperament and persona ...
... wasteful feeders with large group sizes inhabiting open habitats3. However, it has been observed that both body size and group size do not have any effect on primate– non-primate interactions3. The nature of primate interactions could be largely determined by species-specific temperament and persona ...
Habitat alteration and community-level effects of an exotic mussel
... well-developed mussels mats and adjacent no-mat areas were measured in situ (August 1996) with a Torvane shear device. Experimental test of effects of physical structure. In order to examine the hypothesis that mussel effects on macrofaunal colonization derive primarily from the physical structure o ...
... well-developed mussels mats and adjacent no-mat areas were measured in situ (August 1996) with a Torvane shear device. Experimental test of effects of physical structure. In order to examine the hypothesis that mussel effects on macrofaunal colonization derive primarily from the physical structure o ...
Changes in grassland songbird abundances through the northern mixed-grass prairie.
... until the fifth year post burn in 2011. Generalized linear mixed models were used to analyse the interaction between year, burning, and grazing for songbird abundances and habitat structure. As time since burned increased, species abundances in burned-grazed pastures have become more similar with th ...
... until the fifth year post burn in 2011. Generalized linear mixed models were used to analyse the interaction between year, burning, and grazing for songbird abundances and habitat structure. As time since burned increased, species abundances in burned-grazed pastures have become more similar with th ...
Sustainable Management and conservation of the Mugger Crocodile
... The body of the Crocodilians is covered with a thick, leathery skin which has various sizes and shapes of scales in particular areas. The dorsal part is covered with large and rectangular scales, called as "Scute", in different and parallel rows from shoulders to pelvis and continuing onto the tail. ...
... The body of the Crocodilians is covered with a thick, leathery skin which has various sizes and shapes of scales in particular areas. The dorsal part is covered with large and rectangular scales, called as "Scute", in different and parallel rows from shoulders to pelvis and continuing onto the tail. ...
Leaf ties as colonization sites for forest arthropods
... insect remains (exuvia, head capsules, etc.) amidst the silk webbing, which probably provides food for scavenging arthropods. Upon reaching the pre-pupal stage, the caterpillars usually exit the leaf ties and drop to the litter where they pupate. Secondary colonization of these leaf ties by other le ...
... insect remains (exuvia, head capsules, etc.) amidst the silk webbing, which probably provides food for scavenging arthropods. Upon reaching the pre-pupal stage, the caterpillars usually exit the leaf ties and drop to the litter where they pupate. Secondary colonization of these leaf ties by other le ...
Can restoring wolves aid in lynx recovery?
... predators of hares (Wirsing et al. 2002), increased coyote populations can cause exploitative competition with lynx via higher predation pressure on hares (Buskirk et al. 2000, Bunnell et al. 2006). Further, interference competition between coyotes and lynx could limit densities of the latter, since ...
... predators of hares (Wirsing et al. 2002), increased coyote populations can cause exploitative competition with lynx via higher predation pressure on hares (Buskirk et al. 2000, Bunnell et al. 2006). Further, interference competition between coyotes and lynx could limit densities of the latter, since ...
Ecological roles and conservation challenges of social, burrowing
... populations (Branch et al. 2002; Gage and Kosoy 2005; Wingard and Zahler 2006; Rodriguez 2009). The population dynamics and ecological roles of most burrowing mammal species remain poorly understood, however. The patterns discussed here apply to most, but not necessarily all, of the species mentione ...
... populations (Branch et al. 2002; Gage and Kosoy 2005; Wingard and Zahler 2006; Rodriguez 2009). The population dynamics and ecological roles of most burrowing mammal species remain poorly understood, however. The patterns discussed here apply to most, but not necessarily all, of the species mentione ...
Chap21 test review
... 19. Describe two things the prairie dogs need to live that they obtain from their habitat. 20. Describe one of the prairie dog’s adaptations and how it helps the prairie dog to survive. 21. What level of ecological organization do all of the owls in a certain area represent? ...
... 19. Describe two things the prairie dogs need to live that they obtain from their habitat. 20. Describe one of the prairie dog’s adaptations and how it helps the prairie dog to survive. 21. What level of ecological organization do all of the owls in a certain area represent? ...