Chapter 52 An Introduction to Ecology and the Biosphere Multiple
... A) The areas to which the cattle egret has expanded have no cattle egret parasites. B) Climatic factors, such as temperature and precipitation provide suitable habitat for cattle egrets. C) There are no natural predators for cattle egrets in the New World, so they continue to expand their range. D) ...
... A) The areas to which the cattle egret has expanded have no cattle egret parasites. B) Climatic factors, such as temperature and precipitation provide suitable habitat for cattle egrets. C) There are no natural predators for cattle egrets in the New World, so they continue to expand their range. D) ...
LIFE and European Mammals - European Commission
... European mammals According to the latest IUCN European Mammals Assessment (2007), nearly one in six (15%) of Europe’s 231 mammal species is under threat. Although several conservation policies have been introduced at European level (see pages 47-50) the conservation status of mammal species continu ...
... European mammals According to the latest IUCN European Mammals Assessment (2007), nearly one in six (15%) of Europe’s 231 mammal species is under threat. Although several conservation policies have been introduced at European level (see pages 47-50) the conservation status of mammal species continu ...
AN ECOLOGICAL OVERVIEW OF POECILIID FISHES Gary K. Meffe
... 1936; Hess and Tarzwell 1942; Hunt 1953; Reimer 1970; Harrington and Harrington 1961; Schoenherr 1974; Dussault and Kramer 1981). The diets of poeciliids are often reflected in morphology. Tooth structure and gut length relative to body size are good indicators of diet preference (Al-Hussaini 1949; ...
... 1936; Hess and Tarzwell 1942; Hunt 1953; Reimer 1970; Harrington and Harrington 1961; Schoenherr 1974; Dussault and Kramer 1981). The diets of poeciliids are often reflected in morphology. Tooth structure and gut length relative to body size are good indicators of diet preference (Al-Hussaini 1949; ...
Gray Ratsnake (Elaphe spiloides) - Registre public des espèces en
... July to early August, approximately one month after the mating season, which spans from late May to early June. The eggs hatch between late August and late September following an incubation period of around 60 days. The harsh climate in Canada restricts the active season of ratsnakes to approximatel ...
... July to early August, approximately one month after the mating season, which spans from late May to early June. The eggs hatch between late August and late September following an incubation period of around 60 days. The harsh climate in Canada restricts the active season of ratsnakes to approximatel ...
ATTENUATION OF TOP-DOWN AND BOTTOM-UP FORCES IN A COMPLEX TERRESTRIAL COMMUNITY D
... Abstract. Carnivore (top-down) and resource (bottom-up) influences in food webs are strong and pervasive, but few studies have investigated their interactive effects in speciesrich terrestrial ecosystems. This study focused on arthropods associated with the dominant tree species, Metrosideros polymo ...
... Abstract. Carnivore (top-down) and resource (bottom-up) influences in food webs are strong and pervasive, but few studies have investigated their interactive effects in speciesrich terrestrial ecosystems. This study focused on arthropods associated with the dominant tree species, Metrosideros polymo ...
Nottinghamshire Wildlife Magazine Winter 2013
... yet been planted or ploughed. Even large ploughed fields can turn up flocks of lapwing and perhaps golden plover. There is always the chance of finding flocks of finches and buntings while raptors are a possibility - a short-eared owl maybe, a merlin, or even a hen harrier or rough-legged buzzard. I ...
... yet been planted or ploughed. Even large ploughed fields can turn up flocks of lapwing and perhaps golden plover. There is always the chance of finding flocks of finches and buntings while raptors are a possibility - a short-eared owl maybe, a merlin, or even a hen harrier or rough-legged buzzard. I ...
PHENOLOGICAL PATTERNS OF TERRESTRIAL PLANTS By
... (97, 255, 282). Other factors that stimulate germination do not affect the seedling directly but are correlated with factors that do. For example, some desert seeds germinate in response to reduced soil salinity, which occurs only after heavy rains that ensure establishment. Seeds will not germinate ...
... (97, 255, 282). Other factors that stimulate germination do not affect the seedling directly but are correlated with factors that do. For example, some desert seeds germinate in response to reduced soil salinity, which occurs only after heavy rains that ensure establishment. Seeds will not germinate ...
Colonization in metapopulations: a review of
... In metapopulation dynamics turnover of populations in isolated patches may be frequent. Regional survival of a species in such a system with frequent extinctions hinges on its colonization ability. Colonization is more than just dispersal; when a propagule reaches a new patch i t Faces higher extinc ...
... In metapopulation dynamics turnover of populations in isolated patches may be frequent. Regional survival of a species in such a system with frequent extinctions hinges on its colonization ability. Colonization is more than just dispersal; when a propagule reaches a new patch i t Faces higher extinc ...
Flat-tailed Tortoise (Pyxis planicauda)
... The primary threats to the flat-tailed tortoise are habitat loss and exploitation through the pet trade, but the species faces threats due to all five factors identified in the ESA. First, the species’ habitat is damaged by burning and clearing for agricultural lands, cattle grazing, highway develop ...
... The primary threats to the flat-tailed tortoise are habitat loss and exploitation through the pet trade, but the species faces threats due to all five factors identified in the ESA. First, the species’ habitat is damaged by burning and clearing for agricultural lands, cattle grazing, highway develop ...
FastTracks - People Pages
... than its habitat of Wisconsin. While similar the states have different climates, development, and a whole slew of other conflicting locations. 2. Much of the data consulted about the white-tailed jackrabbit is over twenty years old. One Wisconsin study is from the 1940s6. A lot of potential change ...
... than its habitat of Wisconsin. While similar the states have different climates, development, and a whole slew of other conflicting locations. 2. Much of the data consulted about the white-tailed jackrabbit is over twenty years old. One Wisconsin study is from the 1940s6. A lot of potential change ...
Burrowing rodents as ecosystem engineers
... 1999; Zhang, Fan & Wang, 1999). Because of their fossorial life-style, their behaviour, and their population structure, plateau zokors may influence this ecosystem in diverse ways. Their burrowing activity, below-ground foraging, and production of excrement all have direct and indirect, long-term an ...
... 1999; Zhang, Fan & Wang, 1999). Because of their fossorial life-style, their behaviour, and their population structure, plateau zokors may influence this ecosystem in diverse ways. Their burrowing activity, below-ground foraging, and production of excrement all have direct and indirect, long-term an ...
The Disturbing History of Intermediate Disturbance David M
... then it should be Grime rather than Connell who is cited as its originator. It will come as no surprise to anyone with an interest in the history of science that the intermediate disturbance hypothesis does not emerge fully formed during the 1970's without any prior history. Scientific ideas seldom ...
... then it should be Grime rather than Connell who is cited as its originator. It will come as no surprise to anyone with an interest in the history of science that the intermediate disturbance hypothesis does not emerge fully formed during the 1970's without any prior history. Scientific ideas seldom ...
Midlands Conservation Fund
... landscape – they are now estimated to constitute only 4% of their pre-European extent. Native vegetation as a whole now occupies only 30% of the landscape. During the last 40 years, annual rainfall has declined and wool prices have dropped significantly, and as a result, many land-owning families fi ...
... landscape – they are now estimated to constitute only 4% of their pre-European extent. Native vegetation as a whole now occupies only 30% of the landscape. During the last 40 years, annual rainfall has declined and wool prices have dropped significantly, and as a result, many land-owning families fi ...
Soil Biological Communities
... Biological soil crusts may help the soil to retain more moisture. The extent to which this function occurs is highly dependent on both the composition of the crust and soil characteristics. ...
... Biological soil crusts may help the soil to retain more moisture. The extent to which this function occurs is highly dependent on both the composition of the crust and soil characteristics. ...
Chapter 8 Diversity and ecosystem function Jan Lepš Dr. Jan Lepš
... Species-area curves are often used to describe the increase in species number with increasing area within a habitat, or predict the number of species in a county, region or state; the estimates are often based on nested data – and one has to accommodate the statistical analysis to this layout. Howev ...
... Species-area curves are often used to describe the increase in species number with increasing area within a habitat, or predict the number of species in a county, region or state; the estimates are often based on nested data – and one has to accommodate the statistical analysis to this layout. Howev ...
Jaguarundi CH Petition Backup
... occurring in the U.S. portion of the Jaguarundi’s range. Human population growth within this wildcat’s range is a driver of continued loss of habitat to agriculture and development. Border installations and related activity further degrade and fragment its habitat, as well as dividing small U.S. pop ...
... occurring in the U.S. portion of the Jaguarundi’s range. Human population growth within this wildcat’s range is a driver of continued loss of habitat to agriculture and development. Border installations and related activity further degrade and fragment its habitat, as well as dividing small U.S. pop ...
Stoichiometry of nutrient recycling by vertebrates in a tropical stream
... excretion ratio was caused largely by variation in body P content rather than by body W content. Variance inflation factors for multiple regressions were relatively low (Table 1), suggesting that analyses were not greatly biased by multicollinearity among variables. The relationship between body P c ...
... excretion ratio was caused largely by variation in body P content rather than by body W content. Variance inflation factors for multiple regressions were relatively low (Table 1), suggesting that analyses were not greatly biased by multicollinearity among variables. The relationship between body P c ...
Lesson Overview
... Ecology and Economics Economics is concerned with interactions based on money. Economics and ecology share the same word root oikos (economics). Indeed, human economics and ecology are linked. Humans live within the biosphere and depend on ecological processes to provide such essentials as food and ...
... Ecology and Economics Economics is concerned with interactions based on money. Economics and ecology share the same word root oikos (economics). Indeed, human economics and ecology are linked. Humans live within the biosphere and depend on ecological processes to provide such essentials as food and ...
CHAPTER III: Native and nonnative phylogenetically paired plant
... Figure I.1 The proportion of times single (A) or multiple (B) invasive plants were of concern within conservation habitats and in the published literature...................... 33 Figure I.2 The presence of co-occurring invasive plant species is increasing, creating a variety of multiple invasion sc ...
... Figure I.1 The proportion of times single (A) or multiple (B) invasive plants were of concern within conservation habitats and in the published literature...................... 33 Figure I.2 The presence of co-occurring invasive plant species is increasing, creating a variety of multiple invasion sc ...
Assessing the role of large herbivores in the
... Copyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright owners and it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights. • Users may download a ...
... Copyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright owners and it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights. • Users may download a ...
Tower Hamlets Local Biodiversity Action Plan 2014
... 1.4.1 The LBAP includes background information on how it fits in with other Council policies and initiatives, and with national and London-wide biodiversity plans. It then identifies priority habitats and species, setting objectives and, where appropriate, targets for each. Finally, there are four a ...
... 1.4.1 The LBAP includes background information on how it fits in with other Council policies and initiatives, and with national and London-wide biodiversity plans. It then identifies priority habitats and species, setting objectives and, where appropriate, targets for each. Finally, there are four a ...
Are Cattle Surrogate Wildlife? Savanna Plant Community
... Voeten and Prins 1999), suggesting some degree of functional redundancy. For example, cattle may partially functionally replace other herbivores both directly, via consumption of excess forage (Young et al. 2005), and indirectly, by accelerating nutrient cycling and increasing production (Frank and ...
... Voeten and Prins 1999), suggesting some degree of functional redundancy. For example, cattle may partially functionally replace other herbivores both directly, via consumption of excess forage (Young et al. 2005), and indirectly, by accelerating nutrient cycling and increasing production (Frank and ...
Stable Isotope Analysis Reveals That Agricultural Habitat Provides
... supratidal (upland) feeding habitats, the relative contribution of each habitat to individual diets has not been directly quantified. We quantified the proportional use that Calidris alpina pacifica (Dunlin) made of estuarine vs. terrestrial farmland resources on the Fraser River Delta, British Colu ...
... supratidal (upland) feeding habitats, the relative contribution of each habitat to individual diets has not been directly quantified. We quantified the proportional use that Calidris alpina pacifica (Dunlin) made of estuarine vs. terrestrial farmland resources on the Fraser River Delta, British Colu ...
Alternative stable states in ecology
... BE Beisner1, DT Haydon1, and K Cuddington2 The idea that alternative stable states may exist in communities has been a recurring theme in ecology since the late 1960s, and is now experiencing a resurgence of interest. Since the first papers on the subject appeared, two perspectives have developed to ...
... BE Beisner1, DT Haydon1, and K Cuddington2 The idea that alternative stable states may exist in communities has been a recurring theme in ecology since the late 1960s, and is now experiencing a resurgence of interest. Since the first papers on the subject appeared, two perspectives have developed to ...
MS Word Document - 2.1 MB - Department of Environment, Land
... The effects of the interaction between predation and the reduction in habitat complexity (resulting from the fuel management strategy) led to a decline in Southern Brown Bandicoot occurrence and the complete loss of Long-nosed Potoroos at the burn sites. The fuel management strategy also resulted in ...
... The effects of the interaction between predation and the reduction in habitat complexity (resulting from the fuel management strategy) led to a decline in Southern Brown Bandicoot occurrence and the complete loss of Long-nosed Potoroos at the burn sites. The fuel management strategy also resulted in ...
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.